File: | tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp |
Warning: | line 4852, column 26 Called C++ object pointer is null |
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1 | //===--- RewriteObjC.cpp - Playground for the code rewriter ---------------===// | ||||||||||||
2 | // | ||||||||||||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||||||||||||
4 | // See https://llvm.org/LICENSE.txt for license information. | ||||||||||||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||||||||||||
6 | // | ||||||||||||
7 | //===----------------------------------------------------------------------===// | ||||||||||||
8 | // | ||||||||||||
9 | // Hacks and fun related to the code rewriter. | ||||||||||||
10 | // | ||||||||||||
11 | //===----------------------------------------------------------------------===// | ||||||||||||
12 | |||||||||||||
13 | #include "clang/Rewrite/Frontend/ASTConsumers.h" | ||||||||||||
14 | #include "clang/AST/AST.h" | ||||||||||||
15 | #include "clang/AST/ASTConsumer.h" | ||||||||||||
16 | #include "clang/AST/Attr.h" | ||||||||||||
17 | #include "clang/AST/ParentMap.h" | ||||||||||||
18 | #include "clang/Basic/CharInfo.h" | ||||||||||||
19 | #include "clang/Basic/Diagnostic.h" | ||||||||||||
20 | #include "clang/Basic/IdentifierTable.h" | ||||||||||||
21 | #include "clang/Basic/SourceManager.h" | ||||||||||||
22 | #include "clang/Config/config.h" | ||||||||||||
23 | #include "clang/Lex/Lexer.h" | ||||||||||||
24 | #include "clang/Rewrite/Core/Rewriter.h" | ||||||||||||
25 | #include "llvm/ADT/DenseSet.h" | ||||||||||||
26 | #include "llvm/ADT/SmallPtrSet.h" | ||||||||||||
27 | #include "llvm/ADT/StringExtras.h" | ||||||||||||
28 | #include "llvm/Support/MemoryBuffer.h" | ||||||||||||
29 | #include "llvm/Support/raw_ostream.h" | ||||||||||||
30 | #include <memory> | ||||||||||||
31 | |||||||||||||
32 | #if CLANG_ENABLE_OBJC_REWRITER1 | ||||||||||||
33 | |||||||||||||
34 | using namespace clang; | ||||||||||||
35 | using llvm::utostr; | ||||||||||||
36 | |||||||||||||
37 | namespace { | ||||||||||||
38 | class RewriteObjC : public ASTConsumer { | ||||||||||||
39 | protected: | ||||||||||||
40 | enum { | ||||||||||||
41 | BLOCK_FIELD_IS_OBJECT = 3, /* id, NSObject, __attribute__((NSObject)), | ||||||||||||
42 | block, ... */ | ||||||||||||
43 | BLOCK_FIELD_IS_BLOCK = 7, /* a block variable */ | ||||||||||||
44 | BLOCK_FIELD_IS_BYREF = 8, /* the on stack structure holding the | ||||||||||||
45 | __block variable */ | ||||||||||||
46 | BLOCK_FIELD_IS_WEAK = 16, /* declared __weak, only used in byref copy | ||||||||||||
47 | helpers */ | ||||||||||||
48 | BLOCK_BYREF_CALLER = 128, /* called from __block (byref) copy/dispose | ||||||||||||
49 | support routines */ | ||||||||||||
50 | BLOCK_BYREF_CURRENT_MAX = 256 | ||||||||||||
51 | }; | ||||||||||||
52 | |||||||||||||
53 | enum { | ||||||||||||
54 | BLOCK_NEEDS_FREE = (1 << 24), | ||||||||||||
55 | BLOCK_HAS_COPY_DISPOSE = (1 << 25), | ||||||||||||
56 | BLOCK_HAS_CXX_OBJ = (1 << 26), | ||||||||||||
57 | BLOCK_IS_GC = (1 << 27), | ||||||||||||
58 | BLOCK_IS_GLOBAL = (1 << 28), | ||||||||||||
59 | BLOCK_HAS_DESCRIPTOR = (1 << 29) | ||||||||||||
60 | }; | ||||||||||||
61 | static const int OBJC_ABI_VERSION = 7; | ||||||||||||
62 | |||||||||||||
63 | Rewriter Rewrite; | ||||||||||||
64 | DiagnosticsEngine &Diags; | ||||||||||||
65 | const LangOptions &LangOpts; | ||||||||||||
66 | ASTContext *Context; | ||||||||||||
67 | SourceManager *SM; | ||||||||||||
68 | TranslationUnitDecl *TUDecl; | ||||||||||||
69 | FileID MainFileID; | ||||||||||||
70 | const char *MainFileStart, *MainFileEnd; | ||||||||||||
71 | Stmt *CurrentBody; | ||||||||||||
72 | ParentMap *PropParentMap; // created lazily. | ||||||||||||
73 | std::string InFileName; | ||||||||||||
74 | std::unique_ptr<raw_ostream> OutFile; | ||||||||||||
75 | std::string Preamble; | ||||||||||||
76 | |||||||||||||
77 | TypeDecl *ProtocolTypeDecl; | ||||||||||||
78 | VarDecl *GlobalVarDecl; | ||||||||||||
79 | unsigned RewriteFailedDiag; | ||||||||||||
80 | // ObjC string constant support. | ||||||||||||
81 | unsigned NumObjCStringLiterals; | ||||||||||||
82 | VarDecl *ConstantStringClassReference; | ||||||||||||
83 | RecordDecl *NSStringRecord; | ||||||||||||
84 | |||||||||||||
85 | // ObjC foreach break/continue generation support. | ||||||||||||
86 | int BcLabelCount; | ||||||||||||
87 | |||||||||||||
88 | unsigned TryFinallyContainsReturnDiag; | ||||||||||||
89 | // Needed for super. | ||||||||||||
90 | ObjCMethodDecl *CurMethodDef; | ||||||||||||
91 | RecordDecl *SuperStructDecl; | ||||||||||||
92 | RecordDecl *ConstantStringDecl; | ||||||||||||
93 | |||||||||||||
94 | FunctionDecl *MsgSendFunctionDecl; | ||||||||||||
95 | FunctionDecl *MsgSendSuperFunctionDecl; | ||||||||||||
96 | FunctionDecl *MsgSendStretFunctionDecl; | ||||||||||||
97 | FunctionDecl *MsgSendSuperStretFunctionDecl; | ||||||||||||
98 | FunctionDecl *MsgSendFpretFunctionDecl; | ||||||||||||
99 | FunctionDecl *GetClassFunctionDecl; | ||||||||||||
100 | FunctionDecl *GetMetaClassFunctionDecl; | ||||||||||||
101 | FunctionDecl *GetSuperClassFunctionDecl; | ||||||||||||
102 | FunctionDecl *SelGetUidFunctionDecl; | ||||||||||||
103 | FunctionDecl *CFStringFunctionDecl; | ||||||||||||
104 | FunctionDecl *SuperConstructorFunctionDecl; | ||||||||||||
105 | FunctionDecl *CurFunctionDef; | ||||||||||||
106 | FunctionDecl *CurFunctionDeclToDeclareForBlock; | ||||||||||||
107 | |||||||||||||
108 | /* Misc. containers needed for meta-data rewrite. */ | ||||||||||||
109 | SmallVector<ObjCImplementationDecl *, 8> ClassImplementation; | ||||||||||||
110 | SmallVector<ObjCCategoryImplDecl *, 8> CategoryImplementation; | ||||||||||||
111 | llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCSynthesizedStructs; | ||||||||||||
112 | llvm::SmallPtrSet<ObjCProtocolDecl*, 8> ObjCSynthesizedProtocols; | ||||||||||||
113 | llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCForwardDecls; | ||||||||||||
114 | llvm::DenseMap<ObjCMethodDecl*, std::string> MethodInternalNames; | ||||||||||||
115 | SmallVector<Stmt *, 32> Stmts; | ||||||||||||
116 | SmallVector<int, 8> ObjCBcLabelNo; | ||||||||||||
117 | // Remember all the @protocol(<expr>) expressions. | ||||||||||||
118 | llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ProtocolExprDecls; | ||||||||||||
119 | |||||||||||||
120 | llvm::DenseSet<uint64_t> CopyDestroyCache; | ||||||||||||
121 | |||||||||||||
122 | // Block expressions. | ||||||||||||
123 | SmallVector<BlockExpr *, 32> Blocks; | ||||||||||||
124 | SmallVector<int, 32> InnerDeclRefsCount; | ||||||||||||
125 | SmallVector<DeclRefExpr *, 32> InnerDeclRefs; | ||||||||||||
126 | |||||||||||||
127 | SmallVector<DeclRefExpr *, 32> BlockDeclRefs; | ||||||||||||
128 | |||||||||||||
129 | // Block related declarations. | ||||||||||||
130 | SmallVector<ValueDecl *, 8> BlockByCopyDecls; | ||||||||||||
131 | llvm::SmallPtrSet<ValueDecl *, 8> BlockByCopyDeclsPtrSet; | ||||||||||||
132 | SmallVector<ValueDecl *, 8> BlockByRefDecls; | ||||||||||||
133 | llvm::SmallPtrSet<ValueDecl *, 8> BlockByRefDeclsPtrSet; | ||||||||||||
134 | llvm::DenseMap<ValueDecl *, unsigned> BlockByRefDeclNo; | ||||||||||||
135 | llvm::SmallPtrSet<ValueDecl *, 8> ImportedBlockDecls; | ||||||||||||
136 | llvm::SmallPtrSet<VarDecl *, 8> ImportedLocalExternalDecls; | ||||||||||||
137 | |||||||||||||
138 | llvm::DenseMap<BlockExpr *, std::string> RewrittenBlockExprs; | ||||||||||||
139 | |||||||||||||
140 | // This maps an original source AST to it's rewritten form. This allows | ||||||||||||
141 | // us to avoid rewriting the same node twice (which is very uncommon). | ||||||||||||
142 | // This is needed to support some of the exotic property rewriting. | ||||||||||||
143 | llvm::DenseMap<Stmt *, Stmt *> ReplacedNodes; | ||||||||||||
144 | |||||||||||||
145 | // Needed for header files being rewritten | ||||||||||||
146 | bool IsHeader; | ||||||||||||
147 | bool SilenceRewriteMacroWarning; | ||||||||||||
148 | bool objc_impl_method; | ||||||||||||
149 | |||||||||||||
150 | bool DisableReplaceStmt; | ||||||||||||
151 | class DisableReplaceStmtScope { | ||||||||||||
152 | RewriteObjC &R; | ||||||||||||
153 | bool SavedValue; | ||||||||||||
154 | |||||||||||||
155 | public: | ||||||||||||
156 | DisableReplaceStmtScope(RewriteObjC &R) | ||||||||||||
157 | : R(R), SavedValue(R.DisableReplaceStmt) { | ||||||||||||
158 | R.DisableReplaceStmt = true; | ||||||||||||
159 | } | ||||||||||||
160 | |||||||||||||
161 | ~DisableReplaceStmtScope() { | ||||||||||||
162 | R.DisableReplaceStmt = SavedValue; | ||||||||||||
163 | } | ||||||||||||
164 | }; | ||||||||||||
165 | |||||||||||||
166 | void InitializeCommon(ASTContext &context); | ||||||||||||
167 | |||||||||||||
168 | public: | ||||||||||||
169 | // Top Level Driver code. | ||||||||||||
170 | bool HandleTopLevelDecl(DeclGroupRef D) override { | ||||||||||||
171 | for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) { | ||||||||||||
| |||||||||||||
172 | if (ObjCInterfaceDecl *Class
| ||||||||||||
173 | if (!Class->isThisDeclarationADefinition()) { | ||||||||||||
174 | RewriteForwardClassDecl(D); | ||||||||||||
175 | break; | ||||||||||||
176 | } | ||||||||||||
177 | } | ||||||||||||
178 | |||||||||||||
179 | if (ObjCProtocolDecl *Proto
| ||||||||||||
180 | if (!Proto->isThisDeclarationADefinition()) { | ||||||||||||
181 | RewriteForwardProtocolDecl(D); | ||||||||||||
182 | break; | ||||||||||||
183 | } | ||||||||||||
184 | } | ||||||||||||
185 | |||||||||||||
186 | HandleTopLevelSingleDecl(*I); | ||||||||||||
187 | } | ||||||||||||
188 | return true; | ||||||||||||
189 | } | ||||||||||||
190 | |||||||||||||
191 | void HandleTopLevelSingleDecl(Decl *D); | ||||||||||||
192 | void HandleDeclInMainFile(Decl *D); | ||||||||||||
193 | RewriteObjC(std::string inFile, std::unique_ptr<raw_ostream> OS, | ||||||||||||
194 | DiagnosticsEngine &D, const LangOptions &LOpts, | ||||||||||||
195 | bool silenceMacroWarn); | ||||||||||||
196 | |||||||||||||
197 | ~RewriteObjC() override {} | ||||||||||||
198 | |||||||||||||
199 | void HandleTranslationUnit(ASTContext &C) override; | ||||||||||||
200 | |||||||||||||
201 | void ReplaceStmt(Stmt *Old, Stmt *New) { | ||||||||||||
202 | ReplaceStmtWithRange(Old, New, Old->getSourceRange()); | ||||||||||||
203 | } | ||||||||||||
204 | |||||||||||||
205 | void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) { | ||||||||||||
206 | assert(Old != nullptr && New != nullptr && "Expected non-null Stmt's")((Old != nullptr && New != nullptr && "Expected non-null Stmt's" ) ? static_cast<void> (0) : __assert_fail ("Old != nullptr && New != nullptr && \"Expected non-null Stmt's\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 206, __PRETTY_FUNCTION__)); | ||||||||||||
207 | |||||||||||||
208 | Stmt *ReplacingStmt = ReplacedNodes[Old]; | ||||||||||||
209 | if (ReplacingStmt) | ||||||||||||
210 | return; // We can't rewrite the same node twice. | ||||||||||||
211 | |||||||||||||
212 | if (DisableReplaceStmt) | ||||||||||||
213 | return; | ||||||||||||
214 | |||||||||||||
215 | // Measure the old text. | ||||||||||||
216 | int Size = Rewrite.getRangeSize(SrcRange); | ||||||||||||
217 | if (Size == -1) { | ||||||||||||
218 | Diags.Report(Context->getFullLoc(Old->getBeginLoc()), RewriteFailedDiag) | ||||||||||||
219 | << Old->getSourceRange(); | ||||||||||||
220 | return; | ||||||||||||
221 | } | ||||||||||||
222 | // Get the new text. | ||||||||||||
223 | std::string SStr; | ||||||||||||
224 | llvm::raw_string_ostream S(SStr); | ||||||||||||
225 | New->printPretty(S, nullptr, PrintingPolicy(LangOpts)); | ||||||||||||
226 | const std::string &Str = S.str(); | ||||||||||||
227 | |||||||||||||
228 | // If replacement succeeded or warning disabled return with no warning. | ||||||||||||
229 | if (!Rewrite.ReplaceText(SrcRange.getBegin(), Size, Str)) { | ||||||||||||
230 | ReplacedNodes[Old] = New; | ||||||||||||
231 | return; | ||||||||||||
232 | } | ||||||||||||
233 | if (SilenceRewriteMacroWarning) | ||||||||||||
234 | return; | ||||||||||||
235 | Diags.Report(Context->getFullLoc(Old->getBeginLoc()), RewriteFailedDiag) | ||||||||||||
236 | << Old->getSourceRange(); | ||||||||||||
237 | } | ||||||||||||
238 | |||||||||||||
239 | void InsertText(SourceLocation Loc, StringRef Str, | ||||||||||||
240 | bool InsertAfter = true) { | ||||||||||||
241 | // If insertion succeeded or warning disabled return with no warning. | ||||||||||||
242 | if (!Rewrite.InsertText(Loc, Str, InsertAfter) || | ||||||||||||
243 | SilenceRewriteMacroWarning) | ||||||||||||
244 | return; | ||||||||||||
245 | |||||||||||||
246 | Diags.Report(Context->getFullLoc(Loc), RewriteFailedDiag); | ||||||||||||
247 | } | ||||||||||||
248 | |||||||||||||
249 | void ReplaceText(SourceLocation Start, unsigned OrigLength, | ||||||||||||
250 | StringRef Str) { | ||||||||||||
251 | // If removal succeeded or warning disabled return with no warning. | ||||||||||||
252 | if (!Rewrite.ReplaceText(Start, OrigLength, Str) || | ||||||||||||
253 | SilenceRewriteMacroWarning) | ||||||||||||
254 | return; | ||||||||||||
255 | |||||||||||||
256 | Diags.Report(Context->getFullLoc(Start), RewriteFailedDiag); | ||||||||||||
257 | } | ||||||||||||
258 | |||||||||||||
259 | // Syntactic Rewriting. | ||||||||||||
260 | void RewriteRecordBody(RecordDecl *RD); | ||||||||||||
261 | void RewriteInclude(); | ||||||||||||
262 | void RewriteForwardClassDecl(DeclGroupRef D); | ||||||||||||
263 | void RewriteForwardClassDecl(const SmallVectorImpl<Decl *> &DG); | ||||||||||||
264 | void RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl, | ||||||||||||
265 | const std::string &typedefString); | ||||||||||||
266 | void RewriteImplementations(); | ||||||||||||
267 | void RewritePropertyImplDecl(ObjCPropertyImplDecl *PID, | ||||||||||||
268 | ObjCImplementationDecl *IMD, | ||||||||||||
269 | ObjCCategoryImplDecl *CID); | ||||||||||||
270 | void RewriteInterfaceDecl(ObjCInterfaceDecl *Dcl); | ||||||||||||
271 | void RewriteImplementationDecl(Decl *Dcl); | ||||||||||||
272 | void RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl, | ||||||||||||
273 | ObjCMethodDecl *MDecl, std::string &ResultStr); | ||||||||||||
274 | void RewriteTypeIntoString(QualType T, std::string &ResultStr, | ||||||||||||
275 | const FunctionType *&FPRetType); | ||||||||||||
276 | void RewriteByRefString(std::string &ResultStr, const std::string &Name, | ||||||||||||
277 | ValueDecl *VD, bool def=false); | ||||||||||||
278 | void RewriteCategoryDecl(ObjCCategoryDecl *Dcl); | ||||||||||||
279 | void RewriteProtocolDecl(ObjCProtocolDecl *Dcl); | ||||||||||||
280 | void RewriteForwardProtocolDecl(DeclGroupRef D); | ||||||||||||
281 | void RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG); | ||||||||||||
282 | void RewriteMethodDeclaration(ObjCMethodDecl *Method); | ||||||||||||
283 | void RewriteProperty(ObjCPropertyDecl *prop); | ||||||||||||
284 | void RewriteFunctionDecl(FunctionDecl *FD); | ||||||||||||
285 | void RewriteBlockPointerType(std::string& Str, QualType Type); | ||||||||||||
286 | void RewriteBlockPointerTypeVariable(std::string& Str, ValueDecl *VD); | ||||||||||||
287 | void RewriteBlockLiteralFunctionDecl(FunctionDecl *FD); | ||||||||||||
288 | void RewriteObjCQualifiedInterfaceTypes(Decl *Dcl); | ||||||||||||
289 | void RewriteTypeOfDecl(VarDecl *VD); | ||||||||||||
290 | void RewriteObjCQualifiedInterfaceTypes(Expr *E); | ||||||||||||
291 | |||||||||||||
292 | // Expression Rewriting. | ||||||||||||
293 | Stmt *RewriteFunctionBodyOrGlobalInitializer(Stmt *S); | ||||||||||||
294 | Stmt *RewriteAtEncode(ObjCEncodeExpr *Exp); | ||||||||||||
295 | Stmt *RewritePropertyOrImplicitGetter(PseudoObjectExpr *Pseudo); | ||||||||||||
296 | Stmt *RewritePropertyOrImplicitSetter(PseudoObjectExpr *Pseudo); | ||||||||||||
297 | Stmt *RewriteAtSelector(ObjCSelectorExpr *Exp); | ||||||||||||
298 | Stmt *RewriteMessageExpr(ObjCMessageExpr *Exp); | ||||||||||||
299 | Stmt *RewriteObjCStringLiteral(ObjCStringLiteral *Exp); | ||||||||||||
300 | Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp); | ||||||||||||
301 | void RewriteTryReturnStmts(Stmt *S); | ||||||||||||
302 | void RewriteSyncReturnStmts(Stmt *S, std::string buf); | ||||||||||||
303 | Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S); | ||||||||||||
304 | Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S); | ||||||||||||
305 | Stmt *RewriteObjCThrowStmt(ObjCAtThrowStmt *S); | ||||||||||||
306 | Stmt *RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S, | ||||||||||||
307 | SourceLocation OrigEnd); | ||||||||||||
308 | Stmt *RewriteBreakStmt(BreakStmt *S); | ||||||||||||
309 | Stmt *RewriteContinueStmt(ContinueStmt *S); | ||||||||||||
310 | void RewriteCastExpr(CStyleCastExpr *CE); | ||||||||||||
311 | |||||||||||||
312 | // Block rewriting. | ||||||||||||
313 | void RewriteBlocksInFunctionProtoType(QualType funcType, NamedDecl *D); | ||||||||||||
314 | |||||||||||||
315 | // Block specific rewrite rules. | ||||||||||||
316 | void RewriteBlockPointerDecl(NamedDecl *VD); | ||||||||||||
317 | void RewriteByRefVar(VarDecl *VD); | ||||||||||||
318 | Stmt *RewriteBlockDeclRefExpr(DeclRefExpr *VD); | ||||||||||||
319 | Stmt *RewriteLocalVariableExternalStorage(DeclRefExpr *DRE); | ||||||||||||
320 | void RewriteBlockPointerFunctionArgs(FunctionDecl *FD); | ||||||||||||
321 | |||||||||||||
322 | void RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl, | ||||||||||||
323 | std::string &Result); | ||||||||||||
324 | |||||||||||||
325 | void Initialize(ASTContext &context) override = 0; | ||||||||||||
326 | |||||||||||||
327 | // Metadata Rewriting. | ||||||||||||
328 | virtual void RewriteMetaDataIntoBuffer(std::string &Result) = 0; | ||||||||||||
329 | virtual void RewriteObjCProtocolListMetaData(const ObjCList<ObjCProtocolDecl> &Prots, | ||||||||||||
330 | StringRef prefix, | ||||||||||||
331 | StringRef ClassName, | ||||||||||||
332 | std::string &Result) = 0; | ||||||||||||
333 | virtual void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl, | ||||||||||||
334 | std::string &Result) = 0; | ||||||||||||
335 | virtual void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol, | ||||||||||||
336 | StringRef prefix, | ||||||||||||
337 | StringRef ClassName, | ||||||||||||
338 | std::string &Result) = 0; | ||||||||||||
339 | virtual void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl, | ||||||||||||
340 | std::string &Result) = 0; | ||||||||||||
341 | |||||||||||||
342 | // Rewriting ivar access | ||||||||||||
343 | virtual Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) = 0; | ||||||||||||
344 | virtual void RewriteIvarOffsetComputation(ObjCIvarDecl *ivar, | ||||||||||||
345 | std::string &Result) = 0; | ||||||||||||
346 | |||||||||||||
347 | // Misc. AST transformation routines. Sometimes they end up calling | ||||||||||||
348 | // rewriting routines on the new ASTs. | ||||||||||||
349 | CallExpr *SynthesizeCallToFunctionDecl(FunctionDecl *FD, | ||||||||||||
350 | ArrayRef<Expr *> Args, | ||||||||||||
351 | SourceLocation StartLoc=SourceLocation(), | ||||||||||||
352 | SourceLocation EndLoc=SourceLocation()); | ||||||||||||
353 | CallExpr *SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor, | ||||||||||||
354 | QualType msgSendType, | ||||||||||||
355 | QualType returnType, | ||||||||||||
356 | SmallVectorImpl<QualType> &ArgTypes, | ||||||||||||
357 | SmallVectorImpl<Expr*> &MsgExprs, | ||||||||||||
358 | ObjCMethodDecl *Method); | ||||||||||||
359 | Stmt *SynthMessageExpr(ObjCMessageExpr *Exp, | ||||||||||||
360 | SourceLocation StartLoc=SourceLocation(), | ||||||||||||
361 | SourceLocation EndLoc=SourceLocation()); | ||||||||||||
362 | |||||||||||||
363 | void SynthCountByEnumWithState(std::string &buf); | ||||||||||||
364 | void SynthMsgSendFunctionDecl(); | ||||||||||||
365 | void SynthMsgSendSuperFunctionDecl(); | ||||||||||||
366 | void SynthMsgSendStretFunctionDecl(); | ||||||||||||
367 | void SynthMsgSendFpretFunctionDecl(); | ||||||||||||
368 | void SynthMsgSendSuperStretFunctionDecl(); | ||||||||||||
369 | void SynthGetClassFunctionDecl(); | ||||||||||||
370 | void SynthGetMetaClassFunctionDecl(); | ||||||||||||
371 | void SynthGetSuperClassFunctionDecl(); | ||||||||||||
372 | void SynthSelGetUidFunctionDecl(); | ||||||||||||
373 | void SynthSuperConstructorFunctionDecl(); | ||||||||||||
374 | |||||||||||||
375 | std::string SynthesizeByrefCopyDestroyHelper(VarDecl *VD, int flag); | ||||||||||||
376 | std::string SynthesizeBlockHelperFuncs(BlockExpr *CE, int i, | ||||||||||||
377 | StringRef funcName, std::string Tag); | ||||||||||||
378 | std::string SynthesizeBlockFunc(BlockExpr *CE, int i, | ||||||||||||
379 | StringRef funcName, std::string Tag); | ||||||||||||
380 | std::string SynthesizeBlockImpl(BlockExpr *CE, | ||||||||||||
381 | std::string Tag, std::string Desc); | ||||||||||||
382 | std::string SynthesizeBlockDescriptor(std::string DescTag, | ||||||||||||
383 | std::string ImplTag, | ||||||||||||
384 | int i, StringRef funcName, | ||||||||||||
385 | unsigned hasCopy); | ||||||||||||
386 | Stmt *SynthesizeBlockCall(CallExpr *Exp, const Expr* BlockExp); | ||||||||||||
387 | void SynthesizeBlockLiterals(SourceLocation FunLocStart, | ||||||||||||
388 | StringRef FunName); | ||||||||||||
389 | FunctionDecl *SynthBlockInitFunctionDecl(StringRef name); | ||||||||||||
390 | Stmt *SynthBlockInitExpr(BlockExpr *Exp, | ||||||||||||
391 | const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs); | ||||||||||||
392 | |||||||||||||
393 | // Misc. helper routines. | ||||||||||||
394 | QualType getProtocolType(); | ||||||||||||
395 | void WarnAboutReturnGotoStmts(Stmt *S); | ||||||||||||
396 | void HasReturnStmts(Stmt *S, bool &hasReturns); | ||||||||||||
397 | void CheckFunctionPointerDecl(QualType dType, NamedDecl *ND); | ||||||||||||
398 | void InsertBlockLiteralsWithinFunction(FunctionDecl *FD); | ||||||||||||
399 | void InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD); | ||||||||||||
400 | |||||||||||||
401 | bool IsDeclStmtInForeachHeader(DeclStmt *DS); | ||||||||||||
402 | void CollectBlockDeclRefInfo(BlockExpr *Exp); | ||||||||||||
403 | void GetBlockDeclRefExprs(Stmt *S); | ||||||||||||
404 | void GetInnerBlockDeclRefExprs(Stmt *S, | ||||||||||||
405 | SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs, | ||||||||||||
406 | llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts); | ||||||||||||
407 | |||||||||||||
408 | // We avoid calling Type::isBlockPointerType(), since it operates on the | ||||||||||||
409 | // canonical type. We only care if the top-level type is a closure pointer. | ||||||||||||
410 | bool isTopLevelBlockPointerType(QualType T) { | ||||||||||||
411 | return isa<BlockPointerType>(T); | ||||||||||||
412 | } | ||||||||||||
413 | |||||||||||||
414 | /// convertBlockPointerToFunctionPointer - Converts a block-pointer type | ||||||||||||
415 | /// to a function pointer type and upon success, returns true; false | ||||||||||||
416 | /// otherwise. | ||||||||||||
417 | bool convertBlockPointerToFunctionPointer(QualType &T) { | ||||||||||||
418 | if (isTopLevelBlockPointerType(T)) { | ||||||||||||
419 | const BlockPointerType *BPT = T->getAs<BlockPointerType>(); | ||||||||||||
420 | T = Context->getPointerType(BPT->getPointeeType()); | ||||||||||||
421 | return true; | ||||||||||||
422 | } | ||||||||||||
423 | return false; | ||||||||||||
424 | } | ||||||||||||
425 | |||||||||||||
426 | bool needToScanForQualifiers(QualType T); | ||||||||||||
427 | QualType getSuperStructType(); | ||||||||||||
428 | QualType getConstantStringStructType(); | ||||||||||||
429 | QualType convertFunctionTypeOfBlocks(const FunctionType *FT); | ||||||||||||
430 | bool BufferContainsPPDirectives(const char *startBuf, const char *endBuf); | ||||||||||||
431 | |||||||||||||
432 | void convertToUnqualifiedObjCType(QualType &T) { | ||||||||||||
433 | if (T->isObjCQualifiedIdType()) | ||||||||||||
434 | T = Context->getObjCIdType(); | ||||||||||||
435 | else if (T->isObjCQualifiedClassType()) | ||||||||||||
436 | T = Context->getObjCClassType(); | ||||||||||||
437 | else if (T->isObjCObjectPointerType() && | ||||||||||||
438 | T->getPointeeType()->isObjCQualifiedInterfaceType()) { | ||||||||||||
439 | if (const ObjCObjectPointerType * OBJPT = | ||||||||||||
440 | T->getAsObjCInterfacePointerType()) { | ||||||||||||
441 | const ObjCInterfaceType *IFaceT = OBJPT->getInterfaceType(); | ||||||||||||
442 | T = QualType(IFaceT, 0); | ||||||||||||
443 | T = Context->getPointerType(T); | ||||||||||||
444 | } | ||||||||||||
445 | } | ||||||||||||
446 | } | ||||||||||||
447 | |||||||||||||
448 | // FIXME: This predicate seems like it would be useful to add to ASTContext. | ||||||||||||
449 | bool isObjCType(QualType T) { | ||||||||||||
450 | if (!LangOpts.ObjC) | ||||||||||||
451 | return false; | ||||||||||||
452 | |||||||||||||
453 | QualType OCT = Context->getCanonicalType(T).getUnqualifiedType(); | ||||||||||||
454 | |||||||||||||
455 | if (OCT == Context->getCanonicalType(Context->getObjCIdType()) || | ||||||||||||
456 | OCT == Context->getCanonicalType(Context->getObjCClassType())) | ||||||||||||
457 | return true; | ||||||||||||
458 | |||||||||||||
459 | if (const PointerType *PT = OCT->getAs<PointerType>()) { | ||||||||||||
460 | if (isa<ObjCInterfaceType>(PT->getPointeeType()) || | ||||||||||||
461 | PT->getPointeeType()->isObjCQualifiedIdType()) | ||||||||||||
462 | return true; | ||||||||||||
463 | } | ||||||||||||
464 | return false; | ||||||||||||
465 | } | ||||||||||||
466 | bool PointerTypeTakesAnyBlockArguments(QualType QT); | ||||||||||||
467 | bool PointerTypeTakesAnyObjCQualifiedType(QualType QT); | ||||||||||||
468 | void GetExtentOfArgList(const char *Name, const char *&LParen, | ||||||||||||
469 | const char *&RParen); | ||||||||||||
470 | |||||||||||||
471 | void QuoteDoublequotes(std::string &From, std::string &To) { | ||||||||||||
472 | for (unsigned i = 0; i < From.length(); i++) { | ||||||||||||
473 | if (From[i] == '"') | ||||||||||||
474 | To += "\\\""; | ||||||||||||
475 | else | ||||||||||||
476 | To += From[i]; | ||||||||||||
477 | } | ||||||||||||
478 | } | ||||||||||||
479 | |||||||||||||
480 | QualType getSimpleFunctionType(QualType result, | ||||||||||||
481 | ArrayRef<QualType> args, | ||||||||||||
482 | bool variadic = false) { | ||||||||||||
483 | if (result == Context->getObjCInstanceType()) | ||||||||||||
484 | result = Context->getObjCIdType(); | ||||||||||||
485 | FunctionProtoType::ExtProtoInfo fpi; | ||||||||||||
486 | fpi.Variadic = variadic; | ||||||||||||
487 | return Context->getFunctionType(result, args, fpi); | ||||||||||||
488 | } | ||||||||||||
489 | |||||||||||||
490 | // Helper function: create a CStyleCastExpr with trivial type source info. | ||||||||||||
491 | CStyleCastExpr* NoTypeInfoCStyleCastExpr(ASTContext *Ctx, QualType Ty, | ||||||||||||
492 | CastKind Kind, Expr *E) { | ||||||||||||
493 | TypeSourceInfo *TInfo = Ctx->getTrivialTypeSourceInfo(Ty, SourceLocation()); | ||||||||||||
494 | return CStyleCastExpr::Create(*Ctx, Ty, VK_RValue, Kind, E, nullptr, | ||||||||||||
495 | TInfo, SourceLocation(), SourceLocation()); | ||||||||||||
496 | } | ||||||||||||
497 | |||||||||||||
498 | StringLiteral *getStringLiteral(StringRef Str) { | ||||||||||||
499 | QualType StrType = Context->getConstantArrayType( | ||||||||||||
500 | Context->CharTy, llvm::APInt(32, Str.size() + 1), ArrayType::Normal, | ||||||||||||
501 | 0); | ||||||||||||
502 | return StringLiteral::Create(*Context, Str, StringLiteral::Ascii, | ||||||||||||
503 | /*Pascal=*/false, StrType, SourceLocation()); | ||||||||||||
504 | } | ||||||||||||
505 | }; | ||||||||||||
506 | |||||||||||||
507 | class RewriteObjCFragileABI : public RewriteObjC { | ||||||||||||
508 | public: | ||||||||||||
509 | RewriteObjCFragileABI(std::string inFile, std::unique_ptr<raw_ostream> OS, | ||||||||||||
510 | DiagnosticsEngine &D, const LangOptions &LOpts, | ||||||||||||
511 | bool silenceMacroWarn) | ||||||||||||
512 | : RewriteObjC(inFile, std::move(OS), D, LOpts, silenceMacroWarn) {} | ||||||||||||
513 | |||||||||||||
514 | ~RewriteObjCFragileABI() override {} | ||||||||||||
515 | void Initialize(ASTContext &context) override; | ||||||||||||
516 | |||||||||||||
517 | // Rewriting metadata | ||||||||||||
518 | template<typename MethodIterator> | ||||||||||||
519 | void RewriteObjCMethodsMetaData(MethodIterator MethodBegin, | ||||||||||||
520 | MethodIterator MethodEnd, | ||||||||||||
521 | bool IsInstanceMethod, | ||||||||||||
522 | StringRef prefix, | ||||||||||||
523 | StringRef ClassName, | ||||||||||||
524 | std::string &Result); | ||||||||||||
525 | void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol, | ||||||||||||
526 | StringRef prefix, StringRef ClassName, | ||||||||||||
527 | std::string &Result) override; | ||||||||||||
528 | void RewriteObjCProtocolListMetaData( | ||||||||||||
529 | const ObjCList<ObjCProtocolDecl> &Prots, | ||||||||||||
530 | StringRef prefix, StringRef ClassName, std::string &Result) override; | ||||||||||||
531 | void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl, | ||||||||||||
532 | std::string &Result) override; | ||||||||||||
533 | void RewriteMetaDataIntoBuffer(std::string &Result) override; | ||||||||||||
534 | void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl, | ||||||||||||
535 | std::string &Result) override; | ||||||||||||
536 | |||||||||||||
537 | // Rewriting ivar | ||||||||||||
538 | void RewriteIvarOffsetComputation(ObjCIvarDecl *ivar, | ||||||||||||
539 | std::string &Result) override; | ||||||||||||
540 | Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) override; | ||||||||||||
541 | }; | ||||||||||||
542 | } // end anonymous namespace | ||||||||||||
543 | |||||||||||||
544 | void RewriteObjC::RewriteBlocksInFunctionProtoType(QualType funcType, | ||||||||||||
545 | NamedDecl *D) { | ||||||||||||
546 | if (const FunctionProtoType *fproto | ||||||||||||
547 | = dyn_cast<FunctionProtoType>(funcType.IgnoreParens())) { | ||||||||||||
548 | for (const auto &I : fproto->param_types()) | ||||||||||||
549 | if (isTopLevelBlockPointerType(I)) { | ||||||||||||
550 | // All the args are checked/rewritten. Don't call twice! | ||||||||||||
551 | RewriteBlockPointerDecl(D); | ||||||||||||
552 | break; | ||||||||||||
553 | } | ||||||||||||
554 | } | ||||||||||||
555 | } | ||||||||||||
556 | |||||||||||||
557 | void RewriteObjC::CheckFunctionPointerDecl(QualType funcType, NamedDecl *ND) { | ||||||||||||
558 | const PointerType *PT = funcType->getAs<PointerType>(); | ||||||||||||
559 | if (PT && PointerTypeTakesAnyBlockArguments(funcType)) | ||||||||||||
560 | RewriteBlocksInFunctionProtoType(PT->getPointeeType(), ND); | ||||||||||||
561 | } | ||||||||||||
562 | |||||||||||||
563 | static bool IsHeaderFile(const std::string &Filename) { | ||||||||||||
564 | std::string::size_type DotPos = Filename.rfind('.'); | ||||||||||||
565 | |||||||||||||
566 | if (DotPos == std::string::npos) { | ||||||||||||
567 | // no file extension | ||||||||||||
568 | return false; | ||||||||||||
569 | } | ||||||||||||
570 | |||||||||||||
571 | std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end()); | ||||||||||||
572 | // C header: .h | ||||||||||||
573 | // C++ header: .hh or .H; | ||||||||||||
574 | return Ext == "h" || Ext == "hh" || Ext == "H"; | ||||||||||||
575 | } | ||||||||||||
576 | |||||||||||||
577 | RewriteObjC::RewriteObjC(std::string inFile, std::unique_ptr<raw_ostream> OS, | ||||||||||||
578 | DiagnosticsEngine &D, const LangOptions &LOpts, | ||||||||||||
579 | bool silenceMacroWarn) | ||||||||||||
580 | : Diags(D), LangOpts(LOpts), InFileName(inFile), OutFile(std::move(OS)), | ||||||||||||
581 | SilenceRewriteMacroWarning(silenceMacroWarn) { | ||||||||||||
582 | IsHeader = IsHeaderFile(inFile); | ||||||||||||
583 | RewriteFailedDiag = Diags.getCustomDiagID(DiagnosticsEngine::Warning, | ||||||||||||
584 | "rewriting sub-expression within a macro (may not be correct)"); | ||||||||||||
585 | TryFinallyContainsReturnDiag = Diags.getCustomDiagID( | ||||||||||||
586 | DiagnosticsEngine::Warning, | ||||||||||||
587 | "rewriter doesn't support user-specified control flow semantics " | ||||||||||||
588 | "for @try/@finally (code may not execute properly)"); | ||||||||||||
589 | } | ||||||||||||
590 | |||||||||||||
591 | std::unique_ptr<ASTConsumer> | ||||||||||||
592 | clang::CreateObjCRewriter(const std::string &InFile, | ||||||||||||
593 | std::unique_ptr<raw_ostream> OS, | ||||||||||||
594 | DiagnosticsEngine &Diags, const LangOptions &LOpts, | ||||||||||||
595 | bool SilenceRewriteMacroWarning) { | ||||||||||||
596 | return std::make_unique<RewriteObjCFragileABI>( | ||||||||||||
597 | InFile, std::move(OS), Diags, LOpts, SilenceRewriteMacroWarning); | ||||||||||||
598 | } | ||||||||||||
599 | |||||||||||||
600 | void RewriteObjC::InitializeCommon(ASTContext &context) { | ||||||||||||
601 | Context = &context; | ||||||||||||
602 | SM = &Context->getSourceManager(); | ||||||||||||
603 | TUDecl = Context->getTranslationUnitDecl(); | ||||||||||||
604 | MsgSendFunctionDecl = nullptr; | ||||||||||||
605 | MsgSendSuperFunctionDecl = nullptr; | ||||||||||||
606 | MsgSendStretFunctionDecl = nullptr; | ||||||||||||
607 | MsgSendSuperStretFunctionDecl = nullptr; | ||||||||||||
608 | MsgSendFpretFunctionDecl = nullptr; | ||||||||||||
609 | GetClassFunctionDecl = nullptr; | ||||||||||||
610 | GetMetaClassFunctionDecl = nullptr; | ||||||||||||
611 | GetSuperClassFunctionDecl = nullptr; | ||||||||||||
612 | SelGetUidFunctionDecl = nullptr; | ||||||||||||
613 | CFStringFunctionDecl = nullptr; | ||||||||||||
614 | ConstantStringClassReference = nullptr; | ||||||||||||
615 | NSStringRecord = nullptr; | ||||||||||||
616 | CurMethodDef = nullptr; | ||||||||||||
617 | CurFunctionDef = nullptr; | ||||||||||||
618 | CurFunctionDeclToDeclareForBlock = nullptr; | ||||||||||||
619 | GlobalVarDecl = nullptr; | ||||||||||||
620 | SuperStructDecl = nullptr; | ||||||||||||
621 | ProtocolTypeDecl = nullptr; | ||||||||||||
622 | ConstantStringDecl = nullptr; | ||||||||||||
623 | BcLabelCount = 0; | ||||||||||||
624 | SuperConstructorFunctionDecl = nullptr; | ||||||||||||
625 | NumObjCStringLiterals = 0; | ||||||||||||
626 | PropParentMap = nullptr; | ||||||||||||
627 | CurrentBody = nullptr; | ||||||||||||
628 | DisableReplaceStmt = false; | ||||||||||||
629 | objc_impl_method = false; | ||||||||||||
630 | |||||||||||||
631 | // Get the ID and start/end of the main file. | ||||||||||||
632 | MainFileID = SM->getMainFileID(); | ||||||||||||
633 | const llvm::MemoryBuffer *MainBuf = SM->getBuffer(MainFileID); | ||||||||||||
634 | MainFileStart = MainBuf->getBufferStart(); | ||||||||||||
635 | MainFileEnd = MainBuf->getBufferEnd(); | ||||||||||||
636 | |||||||||||||
637 | Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOpts()); | ||||||||||||
638 | } | ||||||||||||
639 | |||||||||||||
640 | //===----------------------------------------------------------------------===// | ||||||||||||
641 | // Top Level Driver Code | ||||||||||||
642 | //===----------------------------------------------------------------------===// | ||||||||||||
643 | |||||||||||||
644 | void RewriteObjC::HandleTopLevelSingleDecl(Decl *D) { | ||||||||||||
645 | if (Diags.hasErrorOccurred()) | ||||||||||||
646 | return; | ||||||||||||
647 | |||||||||||||
648 | // Two cases: either the decl could be in the main file, or it could be in a | ||||||||||||
649 | // #included file. If the former, rewrite it now. If the later, check to see | ||||||||||||
650 | // if we rewrote the #include/#import. | ||||||||||||
651 | SourceLocation Loc = D->getLocation(); | ||||||||||||
652 | Loc = SM->getExpansionLoc(Loc); | ||||||||||||
653 | |||||||||||||
654 | // If this is for a builtin, ignore it. | ||||||||||||
655 | if (Loc.isInvalid()) return; | ||||||||||||
656 | |||||||||||||
657 | // Look for built-in declarations that we need to refer during the rewrite. | ||||||||||||
658 | if (FunctionDecl *FD
| ||||||||||||
659 | RewriteFunctionDecl(FD); | ||||||||||||
660 | } else if (VarDecl *FVD
| ||||||||||||
661 | // declared in <Foundation/NSString.h> | ||||||||||||
662 | if (FVD->getName() == "_NSConstantStringClassReference") { | ||||||||||||
663 | ConstantStringClassReference = FVD; | ||||||||||||
664 | return; | ||||||||||||
665 | } | ||||||||||||
666 | } else if (ObjCInterfaceDecl *ID
| ||||||||||||
667 | if (ID->isThisDeclarationADefinition()) | ||||||||||||
668 | RewriteInterfaceDecl(ID); | ||||||||||||
669 | } else if (ObjCCategoryDecl *CD
| ||||||||||||
670 | RewriteCategoryDecl(CD); | ||||||||||||
671 | } else if (ObjCProtocolDecl *PD
| ||||||||||||
672 | if (PD->isThisDeclarationADefinition()) | ||||||||||||
673 | RewriteProtocolDecl(PD); | ||||||||||||
674 | } else if (LinkageSpecDecl *LSD
| ||||||||||||
675 | // Recurse into linkage specifications | ||||||||||||
676 | for (DeclContext::decl_iterator DI = LSD->decls_begin(), | ||||||||||||
677 | DIEnd = LSD->decls_end(); | ||||||||||||
678 | DI != DIEnd; ) { | ||||||||||||
679 | if (ObjCInterfaceDecl *IFace
| ||||||||||||
680 | if (!IFace->isThisDeclarationADefinition()) { | ||||||||||||
681 | SmallVector<Decl *, 8> DG; | ||||||||||||
682 | SourceLocation StartLoc = IFace->getBeginLoc(); | ||||||||||||
683 | do { | ||||||||||||
684 | if (isa<ObjCInterfaceDecl>(*DI) && | ||||||||||||
685 | !cast<ObjCInterfaceDecl>(*DI)->isThisDeclarationADefinition() && | ||||||||||||
686 | StartLoc == (*DI)->getBeginLoc()) | ||||||||||||
687 | DG.push_back(*DI); | ||||||||||||
688 | else | ||||||||||||
689 | break; | ||||||||||||
690 | |||||||||||||
691 | ++DI; | ||||||||||||
692 | } while (DI != DIEnd); | ||||||||||||
693 | RewriteForwardClassDecl(DG); | ||||||||||||
694 | continue; | ||||||||||||
695 | } | ||||||||||||
696 | } | ||||||||||||
697 | |||||||||||||
698 | if (ObjCProtocolDecl *Proto
| ||||||||||||
699 | if (!Proto->isThisDeclarationADefinition()) { | ||||||||||||
700 | SmallVector<Decl *, 8> DG; | ||||||||||||
701 | SourceLocation StartLoc = Proto->getBeginLoc(); | ||||||||||||
702 | do { | ||||||||||||
703 | if (isa<ObjCProtocolDecl>(*DI) && | ||||||||||||
704 | !cast<ObjCProtocolDecl>(*DI)->isThisDeclarationADefinition() && | ||||||||||||
705 | StartLoc == (*DI)->getBeginLoc()) | ||||||||||||
706 | DG.push_back(*DI); | ||||||||||||
707 | else | ||||||||||||
708 | break; | ||||||||||||
709 | |||||||||||||
710 | ++DI; | ||||||||||||
711 | } while (DI != DIEnd); | ||||||||||||
712 | RewriteForwardProtocolDecl(DG); | ||||||||||||
713 | continue; | ||||||||||||
714 | } | ||||||||||||
715 | } | ||||||||||||
716 | |||||||||||||
717 | HandleTopLevelSingleDecl(*DI); | ||||||||||||
718 | ++DI; | ||||||||||||
719 | } | ||||||||||||
720 | } | ||||||||||||
721 | // If we have a decl in the main file, see if we should rewrite it. | ||||||||||||
722 | if (SM->isWrittenInMainFile(Loc)) | ||||||||||||
723 | return HandleDeclInMainFile(D); | ||||||||||||
724 | } | ||||||||||||
725 | |||||||||||||
726 | //===----------------------------------------------------------------------===// | ||||||||||||
727 | // Syntactic (non-AST) Rewriting Code | ||||||||||||
728 | //===----------------------------------------------------------------------===// | ||||||||||||
729 | |||||||||||||
730 | void RewriteObjC::RewriteInclude() { | ||||||||||||
731 | SourceLocation LocStart = SM->getLocForStartOfFile(MainFileID); | ||||||||||||
732 | StringRef MainBuf = SM->getBufferData(MainFileID); | ||||||||||||
733 | const char *MainBufStart = MainBuf.begin(); | ||||||||||||
734 | const char *MainBufEnd = MainBuf.end(); | ||||||||||||
735 | size_t ImportLen = strlen("import"); | ||||||||||||
736 | |||||||||||||
737 | // Loop over the whole file, looking for includes. | ||||||||||||
738 | for (const char *BufPtr = MainBufStart; BufPtr < MainBufEnd; ++BufPtr) { | ||||||||||||
739 | if (*BufPtr == '#') { | ||||||||||||
740 | if (++BufPtr == MainBufEnd) | ||||||||||||
741 | return; | ||||||||||||
742 | while (*BufPtr == ' ' || *BufPtr == '\t') | ||||||||||||
743 | if (++BufPtr == MainBufEnd) | ||||||||||||
744 | return; | ||||||||||||
745 | if (!strncmp(BufPtr, "import", ImportLen)) { | ||||||||||||
746 | // replace import with include | ||||||||||||
747 | SourceLocation ImportLoc = | ||||||||||||
748 | LocStart.getLocWithOffset(BufPtr-MainBufStart); | ||||||||||||
749 | ReplaceText(ImportLoc, ImportLen, "include"); | ||||||||||||
750 | BufPtr += ImportLen; | ||||||||||||
751 | } | ||||||||||||
752 | } | ||||||||||||
753 | } | ||||||||||||
754 | } | ||||||||||||
755 | |||||||||||||
756 | static std::string getIvarAccessString(ObjCIvarDecl *OID) { | ||||||||||||
757 | const ObjCInterfaceDecl *ClassDecl = OID->getContainingInterface(); | ||||||||||||
758 | std::string S; | ||||||||||||
759 | S = "((struct "; | ||||||||||||
760 | S += ClassDecl->getIdentifier()->getName(); | ||||||||||||
761 | S += "_IMPL *)self)->"; | ||||||||||||
762 | S += OID->getName(); | ||||||||||||
763 | return S; | ||||||||||||
764 | } | ||||||||||||
765 | |||||||||||||
766 | void RewriteObjC::RewritePropertyImplDecl(ObjCPropertyImplDecl *PID, | ||||||||||||
767 | ObjCImplementationDecl *IMD, | ||||||||||||
768 | ObjCCategoryImplDecl *CID) { | ||||||||||||
769 | static bool objcGetPropertyDefined = false; | ||||||||||||
770 | static bool objcSetPropertyDefined = false; | ||||||||||||
771 | SourceLocation startLoc = PID->getBeginLoc(); | ||||||||||||
772 | InsertText(startLoc, "// "); | ||||||||||||
773 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
774 | assert((*startBuf == '@') && "bogus @synthesize location")(((*startBuf == '@') && "bogus @synthesize location") ? static_cast<void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @synthesize location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 774, __PRETTY_FUNCTION__)); | ||||||||||||
775 | const char *semiBuf = strchr(startBuf, ';'); | ||||||||||||
776 | assert((*semiBuf == ';') && "@synthesize: can't find ';'")(((*semiBuf == ';') && "@synthesize: can't find ';'") ? static_cast<void> (0) : __assert_fail ("(*semiBuf == ';') && \"@synthesize: can't find ';'\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 776, __PRETTY_FUNCTION__)); | ||||||||||||
777 | SourceLocation onePastSemiLoc = | ||||||||||||
778 | startLoc.getLocWithOffset(semiBuf-startBuf+1); | ||||||||||||
779 | |||||||||||||
780 | if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic) | ||||||||||||
781 | return; // FIXME: is this correct? | ||||||||||||
782 | |||||||||||||
783 | // Generate the 'getter' function. | ||||||||||||
784 | ObjCPropertyDecl *PD = PID->getPropertyDecl(); | ||||||||||||
785 | ObjCIvarDecl *OID = PID->getPropertyIvarDecl(); | ||||||||||||
786 | |||||||||||||
787 | if (!OID) | ||||||||||||
788 | return; | ||||||||||||
789 | unsigned Attributes = PD->getPropertyAttributes(); | ||||||||||||
790 | if (!PD->getGetterMethodDecl()->isDefined()) { | ||||||||||||
791 | bool GenGetProperty = !(Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic) && | ||||||||||||
792 | (Attributes & (ObjCPropertyDecl::OBJC_PR_retain | | ||||||||||||
793 | ObjCPropertyDecl::OBJC_PR_copy)); | ||||||||||||
794 | std::string Getr; | ||||||||||||
795 | if (GenGetProperty && !objcGetPropertyDefined) { | ||||||||||||
796 | objcGetPropertyDefined = true; | ||||||||||||
797 | // FIXME. Is this attribute correct in all cases? | ||||||||||||
798 | Getr = "\nextern \"C\" __declspec(dllimport) " | ||||||||||||
799 | "id objc_getProperty(id, SEL, long, bool);\n"; | ||||||||||||
800 | } | ||||||||||||
801 | RewriteObjCMethodDecl(OID->getContainingInterface(), | ||||||||||||
802 | PD->getGetterMethodDecl(), Getr); | ||||||||||||
803 | Getr += "{ "; | ||||||||||||
804 | // Synthesize an explicit cast to gain access to the ivar. | ||||||||||||
805 | // See objc-act.c:objc_synthesize_new_getter() for details. | ||||||||||||
806 | if (GenGetProperty) { | ||||||||||||
807 | // return objc_getProperty(self, _cmd, offsetof(ClassDecl, OID), 1) | ||||||||||||
808 | Getr += "typedef "; | ||||||||||||
809 | const FunctionType *FPRetType = nullptr; | ||||||||||||
810 | RewriteTypeIntoString(PD->getGetterMethodDecl()->getReturnType(), Getr, | ||||||||||||
811 | FPRetType); | ||||||||||||
812 | Getr += " _TYPE"; | ||||||||||||
813 | if (FPRetType) { | ||||||||||||
814 | Getr += ")"; // close the precedence "scope" for "*". | ||||||||||||
815 | |||||||||||||
816 | // Now, emit the argument types (if any). | ||||||||||||
817 | if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)){ | ||||||||||||
818 | Getr += "("; | ||||||||||||
819 | for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { | ||||||||||||
820 | if (i) Getr += ", "; | ||||||||||||
821 | std::string ParamStr = | ||||||||||||
822 | FT->getParamType(i).getAsString(Context->getPrintingPolicy()); | ||||||||||||
823 | Getr += ParamStr; | ||||||||||||
824 | } | ||||||||||||
825 | if (FT->isVariadic()) { | ||||||||||||
826 | if (FT->getNumParams()) | ||||||||||||
827 | Getr += ", "; | ||||||||||||
828 | Getr += "..."; | ||||||||||||
829 | } | ||||||||||||
830 | Getr += ")"; | ||||||||||||
831 | } else | ||||||||||||
832 | Getr += "()"; | ||||||||||||
833 | } | ||||||||||||
834 | Getr += ";\n"; | ||||||||||||
835 | Getr += "return (_TYPE)"; | ||||||||||||
836 | Getr += "objc_getProperty(self, _cmd, "; | ||||||||||||
837 | RewriteIvarOffsetComputation(OID, Getr); | ||||||||||||
838 | Getr += ", 1)"; | ||||||||||||
839 | } | ||||||||||||
840 | else | ||||||||||||
841 | Getr += "return " + getIvarAccessString(OID); | ||||||||||||
842 | Getr += "; }"; | ||||||||||||
843 | InsertText(onePastSemiLoc, Getr); | ||||||||||||
844 | } | ||||||||||||
845 | |||||||||||||
846 | if (PD->isReadOnly() || PD->getSetterMethodDecl()->isDefined()) | ||||||||||||
847 | return; | ||||||||||||
848 | |||||||||||||
849 | // Generate the 'setter' function. | ||||||||||||
850 | std::string Setr; | ||||||||||||
851 | bool GenSetProperty = Attributes & (ObjCPropertyDecl::OBJC_PR_retain | | ||||||||||||
852 | ObjCPropertyDecl::OBJC_PR_copy); | ||||||||||||
853 | if (GenSetProperty && !objcSetPropertyDefined) { | ||||||||||||
854 | objcSetPropertyDefined = true; | ||||||||||||
855 | // FIXME. Is this attribute correct in all cases? | ||||||||||||
856 | Setr = "\nextern \"C\" __declspec(dllimport) " | ||||||||||||
857 | "void objc_setProperty (id, SEL, long, id, bool, bool);\n"; | ||||||||||||
858 | } | ||||||||||||
859 | |||||||||||||
860 | RewriteObjCMethodDecl(OID->getContainingInterface(), | ||||||||||||
861 | PD->getSetterMethodDecl(), Setr); | ||||||||||||
862 | Setr += "{ "; | ||||||||||||
863 | // Synthesize an explicit cast to initialize the ivar. | ||||||||||||
864 | // See objc-act.c:objc_synthesize_new_setter() for details. | ||||||||||||
865 | if (GenSetProperty) { | ||||||||||||
866 | Setr += "objc_setProperty (self, _cmd, "; | ||||||||||||
867 | RewriteIvarOffsetComputation(OID, Setr); | ||||||||||||
868 | Setr += ", (id)"; | ||||||||||||
869 | Setr += PD->getName(); | ||||||||||||
870 | Setr += ", "; | ||||||||||||
871 | if (Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic) | ||||||||||||
872 | Setr += "0, "; | ||||||||||||
873 | else | ||||||||||||
874 | Setr += "1, "; | ||||||||||||
875 | if (Attributes & ObjCPropertyDecl::OBJC_PR_copy) | ||||||||||||
876 | Setr += "1)"; | ||||||||||||
877 | else | ||||||||||||
878 | Setr += "0)"; | ||||||||||||
879 | } | ||||||||||||
880 | else { | ||||||||||||
881 | Setr += getIvarAccessString(OID) + " = "; | ||||||||||||
882 | Setr += PD->getName(); | ||||||||||||
883 | } | ||||||||||||
884 | Setr += "; }"; | ||||||||||||
885 | InsertText(onePastSemiLoc, Setr); | ||||||||||||
886 | } | ||||||||||||
887 | |||||||||||||
888 | static void RewriteOneForwardClassDecl(ObjCInterfaceDecl *ForwardDecl, | ||||||||||||
889 | std::string &typedefString) { | ||||||||||||
890 | typedefString += "#ifndef _REWRITER_typedef_"; | ||||||||||||
891 | typedefString += ForwardDecl->getNameAsString(); | ||||||||||||
892 | typedefString += "\n"; | ||||||||||||
893 | typedefString += "#define _REWRITER_typedef_"; | ||||||||||||
894 | typedefString += ForwardDecl->getNameAsString(); | ||||||||||||
895 | typedefString += "\n"; | ||||||||||||
896 | typedefString += "typedef struct objc_object "; | ||||||||||||
897 | typedefString += ForwardDecl->getNameAsString(); | ||||||||||||
898 | typedefString += ";\n#endif\n"; | ||||||||||||
899 | } | ||||||||||||
900 | |||||||||||||
901 | void RewriteObjC::RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl, | ||||||||||||
902 | const std::string &typedefString) { | ||||||||||||
903 | SourceLocation startLoc = ClassDecl->getBeginLoc(); | ||||||||||||
904 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
905 | const char *semiPtr = strchr(startBuf, ';'); | ||||||||||||
906 | // Replace the @class with typedefs corresponding to the classes. | ||||||||||||
907 | ReplaceText(startLoc, semiPtr - startBuf + 1, typedefString); | ||||||||||||
908 | } | ||||||||||||
909 | |||||||||||||
910 | void RewriteObjC::RewriteForwardClassDecl(DeclGroupRef D) { | ||||||||||||
911 | std::string typedefString; | ||||||||||||
912 | for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) { | ||||||||||||
913 | ObjCInterfaceDecl *ForwardDecl = cast<ObjCInterfaceDecl>(*I); | ||||||||||||
914 | if (I == D.begin()) { | ||||||||||||
915 | // Translate to typedef's that forward reference structs with the same name | ||||||||||||
916 | // as the class. As a convenience, we include the original declaration | ||||||||||||
917 | // as a comment. | ||||||||||||
918 | typedefString += "// @class "; | ||||||||||||
919 | typedefString += ForwardDecl->getNameAsString(); | ||||||||||||
920 | typedefString += ";\n"; | ||||||||||||
921 | } | ||||||||||||
922 | RewriteOneForwardClassDecl(ForwardDecl, typedefString); | ||||||||||||
923 | } | ||||||||||||
924 | DeclGroupRef::iterator I = D.begin(); | ||||||||||||
925 | RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(*I), typedefString); | ||||||||||||
926 | } | ||||||||||||
927 | |||||||||||||
928 | void RewriteObjC::RewriteForwardClassDecl(const SmallVectorImpl<Decl *> &D) { | ||||||||||||
929 | std::string typedefString; | ||||||||||||
930 | for (unsigned i = 0; i < D.size(); i++) { | ||||||||||||
931 | ObjCInterfaceDecl *ForwardDecl = cast<ObjCInterfaceDecl>(D[i]); | ||||||||||||
932 | if (i == 0) { | ||||||||||||
933 | typedefString += "// @class "; | ||||||||||||
934 | typedefString += ForwardDecl->getNameAsString(); | ||||||||||||
935 | typedefString += ";\n"; | ||||||||||||
936 | } | ||||||||||||
937 | RewriteOneForwardClassDecl(ForwardDecl, typedefString); | ||||||||||||
938 | } | ||||||||||||
939 | RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(D[0]), typedefString); | ||||||||||||
940 | } | ||||||||||||
941 | |||||||||||||
942 | void RewriteObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) { | ||||||||||||
943 | // When method is a synthesized one, such as a getter/setter there is | ||||||||||||
944 | // nothing to rewrite. | ||||||||||||
945 | if (Method->isImplicit()) | ||||||||||||
946 | return; | ||||||||||||
947 | SourceLocation LocStart = Method->getBeginLoc(); | ||||||||||||
948 | SourceLocation LocEnd = Method->getEndLoc(); | ||||||||||||
949 | |||||||||||||
950 | if (SM->getExpansionLineNumber(LocEnd) > | ||||||||||||
951 | SM->getExpansionLineNumber(LocStart)) { | ||||||||||||
952 | InsertText(LocStart, "#if 0\n"); | ||||||||||||
953 | ReplaceText(LocEnd, 1, ";\n#endif\n"); | ||||||||||||
954 | } else { | ||||||||||||
955 | InsertText(LocStart, "// "); | ||||||||||||
956 | } | ||||||||||||
957 | } | ||||||||||||
958 | |||||||||||||
959 | void RewriteObjC::RewriteProperty(ObjCPropertyDecl *prop) { | ||||||||||||
960 | SourceLocation Loc = prop->getAtLoc(); | ||||||||||||
961 | |||||||||||||
962 | ReplaceText(Loc, 0, "// "); | ||||||||||||
963 | // FIXME: handle properties that are declared across multiple lines. | ||||||||||||
964 | } | ||||||||||||
965 | |||||||||||||
966 | void RewriteObjC::RewriteCategoryDecl(ObjCCategoryDecl *CatDecl) { | ||||||||||||
967 | SourceLocation LocStart = CatDecl->getBeginLoc(); | ||||||||||||
968 | |||||||||||||
969 | // FIXME: handle category headers that are declared across multiple lines. | ||||||||||||
970 | ReplaceText(LocStart, 0, "// "); | ||||||||||||
971 | |||||||||||||
972 | for (auto *I : CatDecl->instance_properties()) | ||||||||||||
973 | RewriteProperty(I); | ||||||||||||
974 | for (auto *I : CatDecl->instance_methods()) | ||||||||||||
975 | RewriteMethodDeclaration(I); | ||||||||||||
976 | for (auto *I : CatDecl->class_methods()) | ||||||||||||
977 | RewriteMethodDeclaration(I); | ||||||||||||
978 | |||||||||||||
979 | // Lastly, comment out the @end. | ||||||||||||
980 | ReplaceText(CatDecl->getAtEndRange().getBegin(), | ||||||||||||
981 | strlen("@end"), "/* @end */"); | ||||||||||||
982 | } | ||||||||||||
983 | |||||||||||||
984 | void RewriteObjC::RewriteProtocolDecl(ObjCProtocolDecl *PDecl) { | ||||||||||||
985 | SourceLocation LocStart = PDecl->getBeginLoc(); | ||||||||||||
986 | assert(PDecl->isThisDeclarationADefinition())((PDecl->isThisDeclarationADefinition()) ? static_cast< void> (0) : __assert_fail ("PDecl->isThisDeclarationADefinition()" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 986, __PRETTY_FUNCTION__)); | ||||||||||||
987 | |||||||||||||
988 | // FIXME: handle protocol headers that are declared across multiple lines. | ||||||||||||
989 | ReplaceText(LocStart, 0, "// "); | ||||||||||||
990 | |||||||||||||
991 | for (auto *I : PDecl->instance_methods()) | ||||||||||||
992 | RewriteMethodDeclaration(I); | ||||||||||||
993 | for (auto *I : PDecl->class_methods()) | ||||||||||||
994 | RewriteMethodDeclaration(I); | ||||||||||||
995 | for (auto *I : PDecl->instance_properties()) | ||||||||||||
996 | RewriteProperty(I); | ||||||||||||
997 | |||||||||||||
998 | // Lastly, comment out the @end. | ||||||||||||
999 | SourceLocation LocEnd = PDecl->getAtEndRange().getBegin(); | ||||||||||||
1000 | ReplaceText(LocEnd, strlen("@end"), "/* @end */"); | ||||||||||||
1001 | |||||||||||||
1002 | // Must comment out @optional/@required | ||||||||||||
1003 | const char *startBuf = SM->getCharacterData(LocStart); | ||||||||||||
1004 | const char *endBuf = SM->getCharacterData(LocEnd); | ||||||||||||
1005 | for (const char *p = startBuf; p < endBuf; p++) { | ||||||||||||
1006 | if (*p == '@' && !strncmp(p+1, "optional", strlen("optional"))) { | ||||||||||||
1007 | SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf); | ||||||||||||
1008 | ReplaceText(OptionalLoc, strlen("@optional"), "/* @optional */"); | ||||||||||||
1009 | |||||||||||||
1010 | } | ||||||||||||
1011 | else if (*p == '@' && !strncmp(p+1, "required", strlen("required"))) { | ||||||||||||
1012 | SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf); | ||||||||||||
1013 | ReplaceText(OptionalLoc, strlen("@required"), "/* @required */"); | ||||||||||||
1014 | |||||||||||||
1015 | } | ||||||||||||
1016 | } | ||||||||||||
1017 | } | ||||||||||||
1018 | |||||||||||||
1019 | void RewriteObjC::RewriteForwardProtocolDecl(DeclGroupRef D) { | ||||||||||||
1020 | SourceLocation LocStart = (*D.begin())->getBeginLoc(); | ||||||||||||
1021 | if (LocStart.isInvalid()) | ||||||||||||
1022 | llvm_unreachable("Invalid SourceLocation")::llvm::llvm_unreachable_internal("Invalid SourceLocation", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1022); | ||||||||||||
1023 | // FIXME: handle forward protocol that are declared across multiple lines. | ||||||||||||
1024 | ReplaceText(LocStart, 0, "// "); | ||||||||||||
1025 | } | ||||||||||||
1026 | |||||||||||||
1027 | void | ||||||||||||
1028 | RewriteObjC::RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG) { | ||||||||||||
1029 | SourceLocation LocStart = DG[0]->getBeginLoc(); | ||||||||||||
1030 | if (LocStart.isInvalid()) | ||||||||||||
1031 | llvm_unreachable("Invalid SourceLocation")::llvm::llvm_unreachable_internal("Invalid SourceLocation", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1031); | ||||||||||||
1032 | // FIXME: handle forward protocol that are declared across multiple lines. | ||||||||||||
1033 | ReplaceText(LocStart, 0, "// "); | ||||||||||||
1034 | } | ||||||||||||
1035 | |||||||||||||
1036 | void RewriteObjC::RewriteTypeIntoString(QualType T, std::string &ResultStr, | ||||||||||||
1037 | const FunctionType *&FPRetType) { | ||||||||||||
1038 | if (T->isObjCQualifiedIdType()) | ||||||||||||
1039 | ResultStr += "id"; | ||||||||||||
1040 | else if (T->isFunctionPointerType() || | ||||||||||||
1041 | T->isBlockPointerType()) { | ||||||||||||
1042 | // needs special handling, since pointer-to-functions have special | ||||||||||||
1043 | // syntax (where a decaration models use). | ||||||||||||
1044 | QualType retType = T; | ||||||||||||
1045 | QualType PointeeTy; | ||||||||||||
1046 | if (const PointerType* PT = retType->getAs<PointerType>()) | ||||||||||||
1047 | PointeeTy = PT->getPointeeType(); | ||||||||||||
1048 | else if (const BlockPointerType *BPT = retType->getAs<BlockPointerType>()) | ||||||||||||
1049 | PointeeTy = BPT->getPointeeType(); | ||||||||||||
1050 | if ((FPRetType = PointeeTy->getAs<FunctionType>())) { | ||||||||||||
1051 | ResultStr += | ||||||||||||
1052 | FPRetType->getReturnType().getAsString(Context->getPrintingPolicy()); | ||||||||||||
1053 | ResultStr += "(*"; | ||||||||||||
1054 | } | ||||||||||||
1055 | } else | ||||||||||||
1056 | ResultStr += T.getAsString(Context->getPrintingPolicy()); | ||||||||||||
1057 | } | ||||||||||||
1058 | |||||||||||||
1059 | void RewriteObjC::RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl, | ||||||||||||
1060 | ObjCMethodDecl *OMD, | ||||||||||||
1061 | std::string &ResultStr) { | ||||||||||||
1062 | //fprintf(stderr,"In RewriteObjCMethodDecl\n"); | ||||||||||||
1063 | const FunctionType *FPRetType = nullptr; | ||||||||||||
1064 | ResultStr += "\nstatic "; | ||||||||||||
1065 | RewriteTypeIntoString(OMD->getReturnType(), ResultStr, FPRetType); | ||||||||||||
1066 | ResultStr += " "; | ||||||||||||
1067 | |||||||||||||
1068 | // Unique method name | ||||||||||||
1069 | std::string NameStr; | ||||||||||||
1070 | |||||||||||||
1071 | if (OMD->isInstanceMethod()) | ||||||||||||
1072 | NameStr += "_I_"; | ||||||||||||
1073 | else | ||||||||||||
1074 | NameStr += "_C_"; | ||||||||||||
1075 | |||||||||||||
1076 | NameStr += IDecl->getNameAsString(); | ||||||||||||
1077 | NameStr += "_"; | ||||||||||||
1078 | |||||||||||||
1079 | if (ObjCCategoryImplDecl *CID = | ||||||||||||
1080 | dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext())) { | ||||||||||||
1081 | NameStr += CID->getNameAsString(); | ||||||||||||
1082 | NameStr += "_"; | ||||||||||||
1083 | } | ||||||||||||
1084 | // Append selector names, replacing ':' with '_' | ||||||||||||
1085 | { | ||||||||||||
1086 | std::string selString = OMD->getSelector().getAsString(); | ||||||||||||
1087 | int len = selString.size(); | ||||||||||||
1088 | for (int i = 0; i < len; i++) | ||||||||||||
1089 | if (selString[i] == ':') | ||||||||||||
1090 | selString[i] = '_'; | ||||||||||||
1091 | NameStr += selString; | ||||||||||||
1092 | } | ||||||||||||
1093 | // Remember this name for metadata emission | ||||||||||||
1094 | MethodInternalNames[OMD] = NameStr; | ||||||||||||
1095 | ResultStr += NameStr; | ||||||||||||
1096 | |||||||||||||
1097 | // Rewrite arguments | ||||||||||||
1098 | ResultStr += "("; | ||||||||||||
1099 | |||||||||||||
1100 | // invisible arguments | ||||||||||||
1101 | if (OMD->isInstanceMethod()) { | ||||||||||||
1102 | QualType selfTy = Context->getObjCInterfaceType(IDecl); | ||||||||||||
1103 | selfTy = Context->getPointerType(selfTy); | ||||||||||||
1104 | if (!LangOpts.MicrosoftExt) { | ||||||||||||
1105 | if (ObjCSynthesizedStructs.count(const_cast<ObjCInterfaceDecl*>(IDecl))) | ||||||||||||
1106 | ResultStr += "struct "; | ||||||||||||
1107 | } | ||||||||||||
1108 | // When rewriting for Microsoft, explicitly omit the structure name. | ||||||||||||
1109 | ResultStr += IDecl->getNameAsString(); | ||||||||||||
1110 | ResultStr += " *"; | ||||||||||||
1111 | } | ||||||||||||
1112 | else | ||||||||||||
1113 | ResultStr += Context->getObjCClassType().getAsString( | ||||||||||||
1114 | Context->getPrintingPolicy()); | ||||||||||||
1115 | |||||||||||||
1116 | ResultStr += " self, "; | ||||||||||||
1117 | ResultStr += Context->getObjCSelType().getAsString(Context->getPrintingPolicy()); | ||||||||||||
1118 | ResultStr += " _cmd"; | ||||||||||||
1119 | |||||||||||||
1120 | // Method arguments. | ||||||||||||
1121 | for (const auto *PDecl : OMD->parameters()) { | ||||||||||||
1122 | ResultStr += ", "; | ||||||||||||
1123 | if (PDecl->getType()->isObjCQualifiedIdType()) { | ||||||||||||
1124 | ResultStr += "id "; | ||||||||||||
1125 | ResultStr += PDecl->getNameAsString(); | ||||||||||||
1126 | } else { | ||||||||||||
1127 | std::string Name = PDecl->getNameAsString(); | ||||||||||||
1128 | QualType QT = PDecl->getType(); | ||||||||||||
1129 | // Make sure we convert "t (^)(...)" to "t (*)(...)". | ||||||||||||
1130 | (void)convertBlockPointerToFunctionPointer(QT); | ||||||||||||
1131 | QT.getAsStringInternal(Name, Context->getPrintingPolicy()); | ||||||||||||
1132 | ResultStr += Name; | ||||||||||||
1133 | } | ||||||||||||
1134 | } | ||||||||||||
1135 | if (OMD->isVariadic()) | ||||||||||||
1136 | ResultStr += ", ..."; | ||||||||||||
1137 | ResultStr += ") "; | ||||||||||||
1138 | |||||||||||||
1139 | if (FPRetType) { | ||||||||||||
1140 | ResultStr += ")"; // close the precedence "scope" for "*". | ||||||||||||
1141 | |||||||||||||
1142 | // Now, emit the argument types (if any). | ||||||||||||
1143 | if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)) { | ||||||||||||
1144 | ResultStr += "("; | ||||||||||||
1145 | for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { | ||||||||||||
1146 | if (i) ResultStr += ", "; | ||||||||||||
1147 | std::string ParamStr = | ||||||||||||
1148 | FT->getParamType(i).getAsString(Context->getPrintingPolicy()); | ||||||||||||
1149 | ResultStr += ParamStr; | ||||||||||||
1150 | } | ||||||||||||
1151 | if (FT->isVariadic()) { | ||||||||||||
1152 | if (FT->getNumParams()) | ||||||||||||
1153 | ResultStr += ", "; | ||||||||||||
1154 | ResultStr += "..."; | ||||||||||||
1155 | } | ||||||||||||
1156 | ResultStr += ")"; | ||||||||||||
1157 | } else { | ||||||||||||
1158 | ResultStr += "()"; | ||||||||||||
1159 | } | ||||||||||||
1160 | } | ||||||||||||
1161 | } | ||||||||||||
1162 | |||||||||||||
1163 | void RewriteObjC::RewriteImplementationDecl(Decl *OID) { | ||||||||||||
1164 | ObjCImplementationDecl *IMD = dyn_cast<ObjCImplementationDecl>(OID); | ||||||||||||
1165 | ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(OID); | ||||||||||||
1166 | |||||||||||||
1167 | InsertText(IMD ? IMD->getBeginLoc() : CID->getBeginLoc(), "// "); | ||||||||||||
1168 | |||||||||||||
1169 | for (auto *OMD : IMD ? IMD->instance_methods() : CID->instance_methods()) { | ||||||||||||
1170 | std::string ResultStr; | ||||||||||||
1171 | RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr); | ||||||||||||
1172 | SourceLocation LocStart = OMD->getBeginLoc(); | ||||||||||||
1173 | SourceLocation LocEnd = OMD->getCompoundBody()->getBeginLoc(); | ||||||||||||
1174 | |||||||||||||
1175 | const char *startBuf = SM->getCharacterData(LocStart); | ||||||||||||
1176 | const char *endBuf = SM->getCharacterData(LocEnd); | ||||||||||||
1177 | ReplaceText(LocStart, endBuf-startBuf, ResultStr); | ||||||||||||
1178 | } | ||||||||||||
1179 | |||||||||||||
1180 | for (auto *OMD : IMD ? IMD->class_methods() : CID->class_methods()) { | ||||||||||||
1181 | std::string ResultStr; | ||||||||||||
1182 | RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr); | ||||||||||||
1183 | SourceLocation LocStart = OMD->getBeginLoc(); | ||||||||||||
1184 | SourceLocation LocEnd = OMD->getCompoundBody()->getBeginLoc(); | ||||||||||||
1185 | |||||||||||||
1186 | const char *startBuf = SM->getCharacterData(LocStart); | ||||||||||||
1187 | const char *endBuf = SM->getCharacterData(LocEnd); | ||||||||||||
1188 | ReplaceText(LocStart, endBuf-startBuf, ResultStr); | ||||||||||||
1189 | } | ||||||||||||
1190 | for (auto *I : IMD ? IMD->property_impls() : CID->property_impls()) | ||||||||||||
1191 | RewritePropertyImplDecl(I, IMD, CID); | ||||||||||||
1192 | |||||||||||||
1193 | InsertText(IMD ? IMD->getEndLoc() : CID->getEndLoc(), "// "); | ||||||||||||
1194 | } | ||||||||||||
1195 | |||||||||||||
1196 | void RewriteObjC::RewriteInterfaceDecl(ObjCInterfaceDecl *ClassDecl) { | ||||||||||||
1197 | std::string ResultStr; | ||||||||||||
1198 | if (!ObjCForwardDecls.count(ClassDecl->getCanonicalDecl())) { | ||||||||||||
1199 | // we haven't seen a forward decl - generate a typedef. | ||||||||||||
1200 | ResultStr = "#ifndef _REWRITER_typedef_"; | ||||||||||||
1201 | ResultStr += ClassDecl->getNameAsString(); | ||||||||||||
1202 | ResultStr += "\n"; | ||||||||||||
1203 | ResultStr += "#define _REWRITER_typedef_"; | ||||||||||||
1204 | ResultStr += ClassDecl->getNameAsString(); | ||||||||||||
1205 | ResultStr += "\n"; | ||||||||||||
1206 | ResultStr += "typedef struct objc_object "; | ||||||||||||
1207 | ResultStr += ClassDecl->getNameAsString(); | ||||||||||||
1208 | ResultStr += ";\n#endif\n"; | ||||||||||||
1209 | // Mark this typedef as having been generated. | ||||||||||||
1210 | ObjCForwardDecls.insert(ClassDecl->getCanonicalDecl()); | ||||||||||||
1211 | } | ||||||||||||
1212 | RewriteObjCInternalStruct(ClassDecl, ResultStr); | ||||||||||||
1213 | |||||||||||||
1214 | for (auto *I : ClassDecl->instance_properties()) | ||||||||||||
1215 | RewriteProperty(I); | ||||||||||||
1216 | for (auto *I : ClassDecl->instance_methods()) | ||||||||||||
1217 | RewriteMethodDeclaration(I); | ||||||||||||
1218 | for (auto *I : ClassDecl->class_methods()) | ||||||||||||
1219 | RewriteMethodDeclaration(I); | ||||||||||||
1220 | |||||||||||||
1221 | // Lastly, comment out the @end. | ||||||||||||
1222 | ReplaceText(ClassDecl->getAtEndRange().getBegin(), strlen("@end"), | ||||||||||||
1223 | "/* @end */"); | ||||||||||||
1224 | } | ||||||||||||
1225 | |||||||||||||
1226 | Stmt *RewriteObjC::RewritePropertyOrImplicitSetter(PseudoObjectExpr *PseudoOp) { | ||||||||||||
1227 | SourceRange OldRange = PseudoOp->getSourceRange(); | ||||||||||||
1228 | |||||||||||||
1229 | // We just magically know some things about the structure of this | ||||||||||||
1230 | // expression. | ||||||||||||
1231 | ObjCMessageExpr *OldMsg = | ||||||||||||
1232 | cast<ObjCMessageExpr>(PseudoOp->getSemanticExpr( | ||||||||||||
1233 | PseudoOp->getNumSemanticExprs() - 1)); | ||||||||||||
1234 | |||||||||||||
1235 | // Because the rewriter doesn't allow us to rewrite rewritten code, | ||||||||||||
1236 | // we need to suppress rewriting the sub-statements. | ||||||||||||
1237 | Expr *Base, *RHS; | ||||||||||||
1238 | { | ||||||||||||
1239 | DisableReplaceStmtScope S(*this); | ||||||||||||
1240 | |||||||||||||
1241 | // Rebuild the base expression if we have one. | ||||||||||||
1242 | Base = nullptr; | ||||||||||||
1243 | if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) { | ||||||||||||
1244 | Base = OldMsg->getInstanceReceiver(); | ||||||||||||
1245 | Base = cast<OpaqueValueExpr>(Base)->getSourceExpr(); | ||||||||||||
1246 | Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base)); | ||||||||||||
1247 | } | ||||||||||||
1248 | |||||||||||||
1249 | // Rebuild the RHS. | ||||||||||||
1250 | RHS = cast<BinaryOperator>(PseudoOp->getSyntacticForm())->getRHS(); | ||||||||||||
1251 | RHS = cast<OpaqueValueExpr>(RHS)->getSourceExpr(); | ||||||||||||
1252 | RHS = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(RHS)); | ||||||||||||
1253 | } | ||||||||||||
1254 | |||||||||||||
1255 | // TODO: avoid this copy. | ||||||||||||
1256 | SmallVector<SourceLocation, 1> SelLocs; | ||||||||||||
1257 | OldMsg->getSelectorLocs(SelLocs); | ||||||||||||
1258 | |||||||||||||
1259 | ObjCMessageExpr *NewMsg = nullptr; | ||||||||||||
1260 | switch (OldMsg->getReceiverKind()) { | ||||||||||||
1261 | case ObjCMessageExpr::Class: | ||||||||||||
1262 | NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(), | ||||||||||||
1263 | OldMsg->getValueKind(), | ||||||||||||
1264 | OldMsg->getLeftLoc(), | ||||||||||||
1265 | OldMsg->getClassReceiverTypeInfo(), | ||||||||||||
1266 | OldMsg->getSelector(), | ||||||||||||
1267 | SelLocs, | ||||||||||||
1268 | OldMsg->getMethodDecl(), | ||||||||||||
1269 | RHS, | ||||||||||||
1270 | OldMsg->getRightLoc(), | ||||||||||||
1271 | OldMsg->isImplicit()); | ||||||||||||
1272 | break; | ||||||||||||
1273 | |||||||||||||
1274 | case ObjCMessageExpr::Instance: | ||||||||||||
1275 | NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(), | ||||||||||||
1276 | OldMsg->getValueKind(), | ||||||||||||
1277 | OldMsg->getLeftLoc(), | ||||||||||||
1278 | Base, | ||||||||||||
1279 | OldMsg->getSelector(), | ||||||||||||
1280 | SelLocs, | ||||||||||||
1281 | OldMsg->getMethodDecl(), | ||||||||||||
1282 | RHS, | ||||||||||||
1283 | OldMsg->getRightLoc(), | ||||||||||||
1284 | OldMsg->isImplicit()); | ||||||||||||
1285 | break; | ||||||||||||
1286 | |||||||||||||
1287 | case ObjCMessageExpr::SuperClass: | ||||||||||||
1288 | case ObjCMessageExpr::SuperInstance: | ||||||||||||
1289 | NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(), | ||||||||||||
1290 | OldMsg->getValueKind(), | ||||||||||||
1291 | OldMsg->getLeftLoc(), | ||||||||||||
1292 | OldMsg->getSuperLoc(), | ||||||||||||
1293 | OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance, | ||||||||||||
1294 | OldMsg->getSuperType(), | ||||||||||||
1295 | OldMsg->getSelector(), | ||||||||||||
1296 | SelLocs, | ||||||||||||
1297 | OldMsg->getMethodDecl(), | ||||||||||||
1298 | RHS, | ||||||||||||
1299 | OldMsg->getRightLoc(), | ||||||||||||
1300 | OldMsg->isImplicit()); | ||||||||||||
1301 | break; | ||||||||||||
1302 | } | ||||||||||||
1303 | |||||||||||||
1304 | Stmt *Replacement = SynthMessageExpr(NewMsg); | ||||||||||||
1305 | ReplaceStmtWithRange(PseudoOp, Replacement, OldRange); | ||||||||||||
1306 | return Replacement; | ||||||||||||
1307 | } | ||||||||||||
1308 | |||||||||||||
1309 | Stmt *RewriteObjC::RewritePropertyOrImplicitGetter(PseudoObjectExpr *PseudoOp) { | ||||||||||||
1310 | SourceRange OldRange = PseudoOp->getSourceRange(); | ||||||||||||
1311 | |||||||||||||
1312 | // We just magically know some things about the structure of this | ||||||||||||
1313 | // expression. | ||||||||||||
1314 | ObjCMessageExpr *OldMsg = | ||||||||||||
1315 | cast<ObjCMessageExpr>(PseudoOp->getResultExpr()->IgnoreImplicit()); | ||||||||||||
1316 | |||||||||||||
1317 | // Because the rewriter doesn't allow us to rewrite rewritten code, | ||||||||||||
1318 | // we need to suppress rewriting the sub-statements. | ||||||||||||
1319 | Expr *Base = nullptr; | ||||||||||||
1320 | { | ||||||||||||
1321 | DisableReplaceStmtScope S(*this); | ||||||||||||
1322 | |||||||||||||
1323 | // Rebuild the base expression if we have one. | ||||||||||||
1324 | if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) { | ||||||||||||
1325 | Base = OldMsg->getInstanceReceiver(); | ||||||||||||
1326 | Base = cast<OpaqueValueExpr>(Base)->getSourceExpr(); | ||||||||||||
1327 | Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base)); | ||||||||||||
1328 | } | ||||||||||||
1329 | } | ||||||||||||
1330 | |||||||||||||
1331 | // Intentionally empty. | ||||||||||||
1332 | SmallVector<SourceLocation, 1> SelLocs; | ||||||||||||
1333 | SmallVector<Expr*, 1> Args; | ||||||||||||
1334 | |||||||||||||
1335 | ObjCMessageExpr *NewMsg = nullptr; | ||||||||||||
1336 | switch (OldMsg->getReceiverKind()) { | ||||||||||||
1337 | case ObjCMessageExpr::Class: | ||||||||||||
1338 | NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(), | ||||||||||||
1339 | OldMsg->getValueKind(), | ||||||||||||
1340 | OldMsg->getLeftLoc(), | ||||||||||||
1341 | OldMsg->getClassReceiverTypeInfo(), | ||||||||||||
1342 | OldMsg->getSelector(), | ||||||||||||
1343 | SelLocs, | ||||||||||||
1344 | OldMsg->getMethodDecl(), | ||||||||||||
1345 | Args, | ||||||||||||
1346 | OldMsg->getRightLoc(), | ||||||||||||
1347 | OldMsg->isImplicit()); | ||||||||||||
1348 | break; | ||||||||||||
1349 | |||||||||||||
1350 | case ObjCMessageExpr::Instance: | ||||||||||||
1351 | NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(), | ||||||||||||
1352 | OldMsg->getValueKind(), | ||||||||||||
1353 | OldMsg->getLeftLoc(), | ||||||||||||
1354 | Base, | ||||||||||||
1355 | OldMsg->getSelector(), | ||||||||||||
1356 | SelLocs, | ||||||||||||
1357 | OldMsg->getMethodDecl(), | ||||||||||||
1358 | Args, | ||||||||||||
1359 | OldMsg->getRightLoc(), | ||||||||||||
1360 | OldMsg->isImplicit()); | ||||||||||||
1361 | break; | ||||||||||||
1362 | |||||||||||||
1363 | case ObjCMessageExpr::SuperClass: | ||||||||||||
1364 | case ObjCMessageExpr::SuperInstance: | ||||||||||||
1365 | NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(), | ||||||||||||
1366 | OldMsg->getValueKind(), | ||||||||||||
1367 | OldMsg->getLeftLoc(), | ||||||||||||
1368 | OldMsg->getSuperLoc(), | ||||||||||||
1369 | OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance, | ||||||||||||
1370 | OldMsg->getSuperType(), | ||||||||||||
1371 | OldMsg->getSelector(), | ||||||||||||
1372 | SelLocs, | ||||||||||||
1373 | OldMsg->getMethodDecl(), | ||||||||||||
1374 | Args, | ||||||||||||
1375 | OldMsg->getRightLoc(), | ||||||||||||
1376 | OldMsg->isImplicit()); | ||||||||||||
1377 | break; | ||||||||||||
1378 | } | ||||||||||||
1379 | |||||||||||||
1380 | Stmt *Replacement = SynthMessageExpr(NewMsg); | ||||||||||||
1381 | ReplaceStmtWithRange(PseudoOp, Replacement, OldRange); | ||||||||||||
1382 | return Replacement; | ||||||||||||
1383 | } | ||||||||||||
1384 | |||||||||||||
1385 | /// SynthCountByEnumWithState - To print: | ||||||||||||
1386 | /// ((unsigned int (*) | ||||||||||||
1387 | /// (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int)) | ||||||||||||
1388 | /// (void *)objc_msgSend)((id)l_collection, | ||||||||||||
1389 | /// sel_registerName( | ||||||||||||
1390 | /// "countByEnumeratingWithState:objects:count:"), | ||||||||||||
1391 | /// &enumState, | ||||||||||||
1392 | /// (id *)__rw_items, (unsigned int)16) | ||||||||||||
1393 | /// | ||||||||||||
1394 | void RewriteObjC::SynthCountByEnumWithState(std::string &buf) { | ||||||||||||
1395 | buf += "((unsigned int (*) (id, SEL, struct __objcFastEnumerationState *, " | ||||||||||||
1396 | "id *, unsigned int))(void *)objc_msgSend)"; | ||||||||||||
1397 | buf += "\n\t\t"; | ||||||||||||
1398 | buf += "((id)l_collection,\n\t\t"; | ||||||||||||
1399 | buf += "sel_registerName(\"countByEnumeratingWithState:objects:count:\"),"; | ||||||||||||
1400 | buf += "\n\t\t"; | ||||||||||||
1401 | buf += "&enumState, " | ||||||||||||
1402 | "(id *)__rw_items, (unsigned int)16)"; | ||||||||||||
1403 | } | ||||||||||||
1404 | |||||||||||||
1405 | /// RewriteBreakStmt - Rewrite for a break-stmt inside an ObjC2's foreach | ||||||||||||
1406 | /// statement to exit to its outer synthesized loop. | ||||||||||||
1407 | /// | ||||||||||||
1408 | Stmt *RewriteObjC::RewriteBreakStmt(BreakStmt *S) { | ||||||||||||
1409 | if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back())) | ||||||||||||
1410 | return S; | ||||||||||||
1411 | // replace break with goto __break_label | ||||||||||||
1412 | std::string buf; | ||||||||||||
1413 | |||||||||||||
1414 | SourceLocation startLoc = S->getBeginLoc(); | ||||||||||||
1415 | buf = "goto __break_label_"; | ||||||||||||
1416 | buf += utostr(ObjCBcLabelNo.back()); | ||||||||||||
1417 | ReplaceText(startLoc, strlen("break"), buf); | ||||||||||||
1418 | |||||||||||||
1419 | return nullptr; | ||||||||||||
1420 | } | ||||||||||||
1421 | |||||||||||||
1422 | /// RewriteContinueStmt - Rewrite for a continue-stmt inside an ObjC2's foreach | ||||||||||||
1423 | /// statement to continue with its inner synthesized loop. | ||||||||||||
1424 | /// | ||||||||||||
1425 | Stmt *RewriteObjC::RewriteContinueStmt(ContinueStmt *S) { | ||||||||||||
1426 | if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back())) | ||||||||||||
1427 | return S; | ||||||||||||
1428 | // replace continue with goto __continue_label | ||||||||||||
1429 | std::string buf; | ||||||||||||
1430 | |||||||||||||
1431 | SourceLocation startLoc = S->getBeginLoc(); | ||||||||||||
1432 | buf = "goto __continue_label_"; | ||||||||||||
1433 | buf += utostr(ObjCBcLabelNo.back()); | ||||||||||||
1434 | ReplaceText(startLoc, strlen("continue"), buf); | ||||||||||||
1435 | |||||||||||||
1436 | return nullptr; | ||||||||||||
1437 | } | ||||||||||||
1438 | |||||||||||||
1439 | /// RewriteObjCForCollectionStmt - Rewriter for ObjC2's foreach statement. | ||||||||||||
1440 | /// It rewrites: | ||||||||||||
1441 | /// for ( type elem in collection) { stmts; } | ||||||||||||
1442 | |||||||||||||
1443 | /// Into: | ||||||||||||
1444 | /// { | ||||||||||||
1445 | /// type elem; | ||||||||||||
1446 | /// struct __objcFastEnumerationState enumState = { 0 }; | ||||||||||||
1447 | /// id __rw_items[16]; | ||||||||||||
1448 | /// id l_collection = (id)collection; | ||||||||||||
1449 | /// unsigned long limit = [l_collection countByEnumeratingWithState:&enumState | ||||||||||||
1450 | /// objects:__rw_items count:16]; | ||||||||||||
1451 | /// if (limit) { | ||||||||||||
1452 | /// unsigned long startMutations = *enumState.mutationsPtr; | ||||||||||||
1453 | /// do { | ||||||||||||
1454 | /// unsigned long counter = 0; | ||||||||||||
1455 | /// do { | ||||||||||||
1456 | /// if (startMutations != *enumState.mutationsPtr) | ||||||||||||
1457 | /// objc_enumerationMutation(l_collection); | ||||||||||||
1458 | /// elem = (type)enumState.itemsPtr[counter++]; | ||||||||||||
1459 | /// stmts; | ||||||||||||
1460 | /// __continue_label: ; | ||||||||||||
1461 | /// } while (counter < limit); | ||||||||||||
1462 | /// } while (limit = [l_collection countByEnumeratingWithState:&enumState | ||||||||||||
1463 | /// objects:__rw_items count:16]); | ||||||||||||
1464 | /// elem = nil; | ||||||||||||
1465 | /// __break_label: ; | ||||||||||||
1466 | /// } | ||||||||||||
1467 | /// else | ||||||||||||
1468 | /// elem = nil; | ||||||||||||
1469 | /// } | ||||||||||||
1470 | /// | ||||||||||||
1471 | Stmt *RewriteObjC::RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S, | ||||||||||||
1472 | SourceLocation OrigEnd) { | ||||||||||||
1473 | assert(!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty")((!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty" ) ? static_cast<void> (0) : __assert_fail ("!Stmts.empty() && \"ObjCForCollectionStmt - Statement stack empty\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1473, __PRETTY_FUNCTION__)); | ||||||||||||
1474 | assert(isa<ObjCForCollectionStmt>(Stmts.back()) &&((isa<ObjCForCollectionStmt>(Stmts.back()) && "ObjCForCollectionStmt Statement stack mismatch" ) ? static_cast<void> (0) : __assert_fail ("isa<ObjCForCollectionStmt>(Stmts.back()) && \"ObjCForCollectionStmt Statement stack mismatch\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1475, __PRETTY_FUNCTION__)) | ||||||||||||
1475 | "ObjCForCollectionStmt Statement stack mismatch")((isa<ObjCForCollectionStmt>(Stmts.back()) && "ObjCForCollectionStmt Statement stack mismatch" ) ? static_cast<void> (0) : __assert_fail ("isa<ObjCForCollectionStmt>(Stmts.back()) && \"ObjCForCollectionStmt Statement stack mismatch\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1475, __PRETTY_FUNCTION__)); | ||||||||||||
1476 | assert(!ObjCBcLabelNo.empty() &&((!ObjCBcLabelNo.empty() && "ObjCForCollectionStmt - Label No stack empty" ) ? static_cast<void> (0) : __assert_fail ("!ObjCBcLabelNo.empty() && \"ObjCForCollectionStmt - Label No stack empty\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1477, __PRETTY_FUNCTION__)) | ||||||||||||
1477 | "ObjCForCollectionStmt - Label No stack empty")((!ObjCBcLabelNo.empty() && "ObjCForCollectionStmt - Label No stack empty" ) ? static_cast<void> (0) : __assert_fail ("!ObjCBcLabelNo.empty() && \"ObjCForCollectionStmt - Label No stack empty\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1477, __PRETTY_FUNCTION__)); | ||||||||||||
1478 | |||||||||||||
1479 | SourceLocation startLoc = S->getBeginLoc(); | ||||||||||||
1480 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1481 | StringRef elementName; | ||||||||||||
1482 | std::string elementTypeAsString; | ||||||||||||
1483 | std::string buf; | ||||||||||||
1484 | buf = "\n{\n\t"; | ||||||||||||
1485 | if (DeclStmt *DS = dyn_cast<DeclStmt>(S->getElement())) { | ||||||||||||
1486 | // type elem; | ||||||||||||
1487 | NamedDecl* D = cast<NamedDecl>(DS->getSingleDecl()); | ||||||||||||
1488 | QualType ElementType = cast<ValueDecl>(D)->getType(); | ||||||||||||
1489 | if (ElementType->isObjCQualifiedIdType() || | ||||||||||||
1490 | ElementType->isObjCQualifiedInterfaceType()) | ||||||||||||
1491 | // Simply use 'id' for all qualified types. | ||||||||||||
1492 | elementTypeAsString = "id"; | ||||||||||||
1493 | else | ||||||||||||
1494 | elementTypeAsString = ElementType.getAsString(Context->getPrintingPolicy()); | ||||||||||||
1495 | buf += elementTypeAsString; | ||||||||||||
1496 | buf += " "; | ||||||||||||
1497 | elementName = D->getName(); | ||||||||||||
1498 | buf += elementName; | ||||||||||||
1499 | buf += ";\n\t"; | ||||||||||||
1500 | } | ||||||||||||
1501 | else { | ||||||||||||
1502 | DeclRefExpr *DR = cast<DeclRefExpr>(S->getElement()); | ||||||||||||
1503 | elementName = DR->getDecl()->getName(); | ||||||||||||
1504 | ValueDecl *VD = DR->getDecl(); | ||||||||||||
1505 | if (VD->getType()->isObjCQualifiedIdType() || | ||||||||||||
1506 | VD->getType()->isObjCQualifiedInterfaceType()) | ||||||||||||
1507 | // Simply use 'id' for all qualified types. | ||||||||||||
1508 | elementTypeAsString = "id"; | ||||||||||||
1509 | else | ||||||||||||
1510 | elementTypeAsString = VD->getType().getAsString(Context->getPrintingPolicy()); | ||||||||||||
1511 | } | ||||||||||||
1512 | |||||||||||||
1513 | // struct __objcFastEnumerationState enumState = { 0 }; | ||||||||||||
1514 | buf += "struct __objcFastEnumerationState enumState = { 0 };\n\t"; | ||||||||||||
1515 | // id __rw_items[16]; | ||||||||||||
1516 | buf += "id __rw_items[16];\n\t"; | ||||||||||||
1517 | // id l_collection = (id) | ||||||||||||
1518 | buf += "id l_collection = (id)"; | ||||||||||||
1519 | // Find start location of 'collection' the hard way! | ||||||||||||
1520 | const char *startCollectionBuf = startBuf; | ||||||||||||
1521 | startCollectionBuf += 3; // skip 'for' | ||||||||||||
1522 | startCollectionBuf = strchr(startCollectionBuf, '('); | ||||||||||||
1523 | startCollectionBuf++; // skip '(' | ||||||||||||
1524 | // find 'in' and skip it. | ||||||||||||
1525 | while (*startCollectionBuf != ' ' || | ||||||||||||
1526 | *(startCollectionBuf+1) != 'i' || *(startCollectionBuf+2) != 'n' || | ||||||||||||
1527 | (*(startCollectionBuf+3) != ' ' && | ||||||||||||
1528 | *(startCollectionBuf+3) != '[' && *(startCollectionBuf+3) != '(')) | ||||||||||||
1529 | startCollectionBuf++; | ||||||||||||
1530 | startCollectionBuf += 3; | ||||||||||||
1531 | |||||||||||||
1532 | // Replace: "for (type element in" with string constructed thus far. | ||||||||||||
1533 | ReplaceText(startLoc, startCollectionBuf - startBuf, buf); | ||||||||||||
1534 | // Replace ')' in for '(' type elem in collection ')' with ';' | ||||||||||||
1535 | SourceLocation rightParenLoc = S->getRParenLoc(); | ||||||||||||
1536 | const char *rparenBuf = SM->getCharacterData(rightParenLoc); | ||||||||||||
1537 | SourceLocation lparenLoc = startLoc.getLocWithOffset(rparenBuf-startBuf); | ||||||||||||
1538 | buf = ";\n\t"; | ||||||||||||
1539 | |||||||||||||
1540 | // unsigned long limit = [l_collection countByEnumeratingWithState:&enumState | ||||||||||||
1541 | // objects:__rw_items count:16]; | ||||||||||||
1542 | // which is synthesized into: | ||||||||||||
1543 | // unsigned int limit = | ||||||||||||
1544 | // ((unsigned int (*) | ||||||||||||
1545 | // (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int)) | ||||||||||||
1546 | // (void *)objc_msgSend)((id)l_collection, | ||||||||||||
1547 | // sel_registerName( | ||||||||||||
1548 | // "countByEnumeratingWithState:objects:count:"), | ||||||||||||
1549 | // (struct __objcFastEnumerationState *)&state, | ||||||||||||
1550 | // (id *)__rw_items, (unsigned int)16); | ||||||||||||
1551 | buf += "unsigned long limit =\n\t\t"; | ||||||||||||
1552 | SynthCountByEnumWithState(buf); | ||||||||||||
1553 | buf += ";\n\t"; | ||||||||||||
1554 | /// if (limit) { | ||||||||||||
1555 | /// unsigned long startMutations = *enumState.mutationsPtr; | ||||||||||||
1556 | /// do { | ||||||||||||
1557 | /// unsigned long counter = 0; | ||||||||||||
1558 | /// do { | ||||||||||||
1559 | /// if (startMutations != *enumState.mutationsPtr) | ||||||||||||
1560 | /// objc_enumerationMutation(l_collection); | ||||||||||||
1561 | /// elem = (type)enumState.itemsPtr[counter++]; | ||||||||||||
1562 | buf += "if (limit) {\n\t"; | ||||||||||||
1563 | buf += "unsigned long startMutations = *enumState.mutationsPtr;\n\t"; | ||||||||||||
1564 | buf += "do {\n\t\t"; | ||||||||||||
1565 | buf += "unsigned long counter = 0;\n\t\t"; | ||||||||||||
1566 | buf += "do {\n\t\t\t"; | ||||||||||||
1567 | buf += "if (startMutations != *enumState.mutationsPtr)\n\t\t\t\t"; | ||||||||||||
1568 | buf += "objc_enumerationMutation(l_collection);\n\t\t\t"; | ||||||||||||
1569 | buf += elementName; | ||||||||||||
1570 | buf += " = ("; | ||||||||||||
1571 | buf += elementTypeAsString; | ||||||||||||
1572 | buf += ")enumState.itemsPtr[counter++];"; | ||||||||||||
1573 | // Replace ')' in for '(' type elem in collection ')' with all of these. | ||||||||||||
1574 | ReplaceText(lparenLoc, 1, buf); | ||||||||||||
1575 | |||||||||||||
1576 | /// __continue_label: ; | ||||||||||||
1577 | /// } while (counter < limit); | ||||||||||||
1578 | /// } while (limit = [l_collection countByEnumeratingWithState:&enumState | ||||||||||||
1579 | /// objects:__rw_items count:16]); | ||||||||||||
1580 | /// elem = nil; | ||||||||||||
1581 | /// __break_label: ; | ||||||||||||
1582 | /// } | ||||||||||||
1583 | /// else | ||||||||||||
1584 | /// elem = nil; | ||||||||||||
1585 | /// } | ||||||||||||
1586 | /// | ||||||||||||
1587 | buf = ";\n\t"; | ||||||||||||
1588 | buf += "__continue_label_"; | ||||||||||||
1589 | buf += utostr(ObjCBcLabelNo.back()); | ||||||||||||
1590 | buf += ": ;"; | ||||||||||||
1591 | buf += "\n\t\t"; | ||||||||||||
1592 | buf += "} while (counter < limit);\n\t"; | ||||||||||||
1593 | buf += "} while (limit = "; | ||||||||||||
1594 | SynthCountByEnumWithState(buf); | ||||||||||||
1595 | buf += ");\n\t"; | ||||||||||||
1596 | buf += elementName; | ||||||||||||
1597 | buf += " = (("; | ||||||||||||
1598 | buf += elementTypeAsString; | ||||||||||||
1599 | buf += ")0);\n\t"; | ||||||||||||
1600 | buf += "__break_label_"; | ||||||||||||
1601 | buf += utostr(ObjCBcLabelNo.back()); | ||||||||||||
1602 | buf += ": ;\n\t"; | ||||||||||||
1603 | buf += "}\n\t"; | ||||||||||||
1604 | buf += "else\n\t\t"; | ||||||||||||
1605 | buf += elementName; | ||||||||||||
1606 | buf += " = (("; | ||||||||||||
1607 | buf += elementTypeAsString; | ||||||||||||
1608 | buf += ")0);\n\t"; | ||||||||||||
1609 | buf += "}\n"; | ||||||||||||
1610 | |||||||||||||
1611 | // Insert all these *after* the statement body. | ||||||||||||
1612 | // FIXME: If this should support Obj-C++, support CXXTryStmt | ||||||||||||
1613 | if (isa<CompoundStmt>(S->getBody())) { | ||||||||||||
1614 | SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(1); | ||||||||||||
1615 | InsertText(endBodyLoc, buf); | ||||||||||||
1616 | } else { | ||||||||||||
1617 | /* Need to treat single statements specially. For example: | ||||||||||||
1618 | * | ||||||||||||
1619 | * for (A *a in b) if (stuff()) break; | ||||||||||||
1620 | * for (A *a in b) xxxyy; | ||||||||||||
1621 | * | ||||||||||||
1622 | * The following code simply scans ahead to the semi to find the actual end. | ||||||||||||
1623 | */ | ||||||||||||
1624 | const char *stmtBuf = SM->getCharacterData(OrigEnd); | ||||||||||||
1625 | const char *semiBuf = strchr(stmtBuf, ';'); | ||||||||||||
1626 | assert(semiBuf && "Can't find ';'")((semiBuf && "Can't find ';'") ? static_cast<void> (0) : __assert_fail ("semiBuf && \"Can't find ';'\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1626, __PRETTY_FUNCTION__)); | ||||||||||||
1627 | SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(semiBuf-stmtBuf+1); | ||||||||||||
1628 | InsertText(endBodyLoc, buf); | ||||||||||||
1629 | } | ||||||||||||
1630 | Stmts.pop_back(); | ||||||||||||
1631 | ObjCBcLabelNo.pop_back(); | ||||||||||||
1632 | return nullptr; | ||||||||||||
1633 | } | ||||||||||||
1634 | |||||||||||||
1635 | /// RewriteObjCSynchronizedStmt - | ||||||||||||
1636 | /// This routine rewrites @synchronized(expr) stmt; | ||||||||||||
1637 | /// into: | ||||||||||||
1638 | /// objc_sync_enter(expr); | ||||||||||||
1639 | /// @try stmt @finally { objc_sync_exit(expr); } | ||||||||||||
1640 | /// | ||||||||||||
1641 | Stmt *RewriteObjC::RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S) { | ||||||||||||
1642 | // Get the start location and compute the semi location. | ||||||||||||
1643 | SourceLocation startLoc = S->getBeginLoc(); | ||||||||||||
1644 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1645 | |||||||||||||
1646 | assert((*startBuf == '@') && "bogus @synchronized location")(((*startBuf == '@') && "bogus @synchronized location" ) ? static_cast<void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @synchronized location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1646, __PRETTY_FUNCTION__)); | ||||||||||||
1647 | |||||||||||||
1648 | std::string buf; | ||||||||||||
1649 | buf = "objc_sync_enter((id)"; | ||||||||||||
1650 | const char *lparenBuf = startBuf; | ||||||||||||
1651 | while (*lparenBuf != '(') lparenBuf++; | ||||||||||||
1652 | ReplaceText(startLoc, lparenBuf-startBuf+1, buf); | ||||||||||||
1653 | // We can't use S->getSynchExpr()->getEndLoc() to find the end location, since | ||||||||||||
1654 | // the sync expression is typically a message expression that's already | ||||||||||||
1655 | // been rewritten! (which implies the SourceLocation's are invalid). | ||||||||||||
1656 | SourceLocation endLoc = S->getSynchBody()->getBeginLoc(); | ||||||||||||
1657 | const char *endBuf = SM->getCharacterData(endLoc); | ||||||||||||
1658 | while (*endBuf != ')') endBuf--; | ||||||||||||
1659 | SourceLocation rparenLoc = startLoc.getLocWithOffset(endBuf-startBuf); | ||||||||||||
1660 | buf = ");\n"; | ||||||||||||
1661 | // declare a new scope with two variables, _stack and _rethrow. | ||||||||||||
1662 | buf += "/* @try scope begin */ \n{ struct _objc_exception_data {\n"; | ||||||||||||
1663 | buf += "int buf[18/*32-bit i386*/];\n"; | ||||||||||||
1664 | buf += "char *pointers[4];} _stack;\n"; | ||||||||||||
1665 | buf += "id volatile _rethrow = 0;\n"; | ||||||||||||
1666 | buf += "objc_exception_try_enter(&_stack);\n"; | ||||||||||||
1667 | buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n"; | ||||||||||||
1668 | ReplaceText(rparenLoc, 1, buf); | ||||||||||||
1669 | startLoc = S->getSynchBody()->getEndLoc(); | ||||||||||||
1670 | startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1671 | |||||||||||||
1672 | assert((*startBuf == '}') && "bogus @synchronized block")(((*startBuf == '}') && "bogus @synchronized block") ? static_cast<void> (0) : __assert_fail ("(*startBuf == '}') && \"bogus @synchronized block\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1672, __PRETTY_FUNCTION__)); | ||||||||||||
1673 | SourceLocation lastCurlyLoc = startLoc; | ||||||||||||
1674 | buf = "}\nelse {\n"; | ||||||||||||
1675 | buf += " _rethrow = objc_exception_extract(&_stack);\n"; | ||||||||||||
1676 | buf += "}\n"; | ||||||||||||
1677 | buf += "{ /* implicit finally clause */\n"; | ||||||||||||
1678 | buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n"; | ||||||||||||
1679 | |||||||||||||
1680 | std::string syncBuf; | ||||||||||||
1681 | syncBuf += " objc_sync_exit("; | ||||||||||||
1682 | |||||||||||||
1683 | Expr *syncExpr = S->getSynchExpr(); | ||||||||||||
1684 | CastKind CK = syncExpr->getType()->isObjCObjectPointerType() | ||||||||||||
1685 | ? CK_BitCast : | ||||||||||||
1686 | syncExpr->getType()->isBlockPointerType() | ||||||||||||
1687 | ? CK_BlockPointerToObjCPointerCast | ||||||||||||
1688 | : CK_CPointerToObjCPointerCast; | ||||||||||||
1689 | syncExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(), | ||||||||||||
1690 | CK, syncExpr); | ||||||||||||
1691 | std::string syncExprBufS; | ||||||||||||
1692 | llvm::raw_string_ostream syncExprBuf(syncExprBufS); | ||||||||||||
1693 | assert(syncExpr != nullptr && "Expected non-null Expr")((syncExpr != nullptr && "Expected non-null Expr") ? static_cast <void> (0) : __assert_fail ("syncExpr != nullptr && \"Expected non-null Expr\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1693, __PRETTY_FUNCTION__)); | ||||||||||||
1694 | syncExpr->printPretty(syncExprBuf, nullptr, PrintingPolicy(LangOpts)); | ||||||||||||
1695 | syncBuf += syncExprBuf.str(); | ||||||||||||
1696 | syncBuf += ");"; | ||||||||||||
1697 | |||||||||||||
1698 | buf += syncBuf; | ||||||||||||
1699 | buf += "\n if (_rethrow) objc_exception_throw(_rethrow);\n"; | ||||||||||||
1700 | buf += "}\n"; | ||||||||||||
1701 | buf += "}"; | ||||||||||||
1702 | |||||||||||||
1703 | ReplaceText(lastCurlyLoc, 1, buf); | ||||||||||||
1704 | |||||||||||||
1705 | bool hasReturns = false; | ||||||||||||
1706 | HasReturnStmts(S->getSynchBody(), hasReturns); | ||||||||||||
1707 | if (hasReturns) | ||||||||||||
1708 | RewriteSyncReturnStmts(S->getSynchBody(), syncBuf); | ||||||||||||
1709 | |||||||||||||
1710 | return nullptr; | ||||||||||||
1711 | } | ||||||||||||
1712 | |||||||||||||
1713 | void RewriteObjC::WarnAboutReturnGotoStmts(Stmt *S) | ||||||||||||
1714 | { | ||||||||||||
1715 | // Perform a bottom up traversal of all children. | ||||||||||||
1716 | for (Stmt *SubStmt : S->children()) | ||||||||||||
1717 | if (SubStmt) | ||||||||||||
1718 | WarnAboutReturnGotoStmts(SubStmt); | ||||||||||||
1719 | |||||||||||||
1720 | if (isa<ReturnStmt>(S) || isa<GotoStmt>(S)) { | ||||||||||||
1721 | Diags.Report(Context->getFullLoc(S->getBeginLoc()), | ||||||||||||
1722 | TryFinallyContainsReturnDiag); | ||||||||||||
1723 | } | ||||||||||||
1724 | } | ||||||||||||
1725 | |||||||||||||
1726 | void RewriteObjC::HasReturnStmts(Stmt *S, bool &hasReturns) | ||||||||||||
1727 | { | ||||||||||||
1728 | // Perform a bottom up traversal of all children. | ||||||||||||
1729 | for (Stmt *SubStmt : S->children()) | ||||||||||||
1730 | if (SubStmt) | ||||||||||||
1731 | HasReturnStmts(SubStmt, hasReturns); | ||||||||||||
1732 | |||||||||||||
1733 | if (isa<ReturnStmt>(S)) | ||||||||||||
1734 | hasReturns = true; | ||||||||||||
1735 | } | ||||||||||||
1736 | |||||||||||||
1737 | void RewriteObjC::RewriteTryReturnStmts(Stmt *S) { | ||||||||||||
1738 | // Perform a bottom up traversal of all children. | ||||||||||||
1739 | for (Stmt *SubStmt : S->children()) | ||||||||||||
1740 | if (SubStmt) { | ||||||||||||
1741 | RewriteTryReturnStmts(SubStmt); | ||||||||||||
1742 | } | ||||||||||||
1743 | if (isa<ReturnStmt>(S)) { | ||||||||||||
1744 | SourceLocation startLoc = S->getBeginLoc(); | ||||||||||||
1745 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1746 | const char *semiBuf = strchr(startBuf, ';'); | ||||||||||||
1747 | assert((*semiBuf == ';') && "RewriteTryReturnStmts: can't find ';'")(((*semiBuf == ';') && "RewriteTryReturnStmts: can't find ';'" ) ? static_cast<void> (0) : __assert_fail ("(*semiBuf == ';') && \"RewriteTryReturnStmts: can't find ';'\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1747, __PRETTY_FUNCTION__)); | ||||||||||||
1748 | SourceLocation onePastSemiLoc = startLoc.getLocWithOffset(semiBuf-startBuf+1); | ||||||||||||
1749 | |||||||||||||
1750 | std::string buf; | ||||||||||||
1751 | buf = "{ objc_exception_try_exit(&_stack); return"; | ||||||||||||
1752 | |||||||||||||
1753 | ReplaceText(startLoc, 6, buf); | ||||||||||||
1754 | InsertText(onePastSemiLoc, "}"); | ||||||||||||
1755 | } | ||||||||||||
1756 | } | ||||||||||||
1757 | |||||||||||||
1758 | void RewriteObjC::RewriteSyncReturnStmts(Stmt *S, std::string syncExitBuf) { | ||||||||||||
1759 | // Perform a bottom up traversal of all children. | ||||||||||||
1760 | for (Stmt *SubStmt : S->children()) | ||||||||||||
1761 | if (SubStmt) { | ||||||||||||
1762 | RewriteSyncReturnStmts(SubStmt, syncExitBuf); | ||||||||||||
1763 | } | ||||||||||||
1764 | if (isa<ReturnStmt>(S)) { | ||||||||||||
1765 | SourceLocation startLoc = S->getBeginLoc(); | ||||||||||||
1766 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1767 | |||||||||||||
1768 | const char *semiBuf = strchr(startBuf, ';'); | ||||||||||||
1769 | assert((*semiBuf == ';') && "RewriteSyncReturnStmts: can't find ';'")(((*semiBuf == ';') && "RewriteSyncReturnStmts: can't find ';'" ) ? static_cast<void> (0) : __assert_fail ("(*semiBuf == ';') && \"RewriteSyncReturnStmts: can't find ';'\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1769, __PRETTY_FUNCTION__)); | ||||||||||||
1770 | SourceLocation onePastSemiLoc = startLoc.getLocWithOffset(semiBuf-startBuf+1); | ||||||||||||
1771 | |||||||||||||
1772 | std::string buf; | ||||||||||||
1773 | buf = "{ objc_exception_try_exit(&_stack);"; | ||||||||||||
1774 | buf += syncExitBuf; | ||||||||||||
1775 | buf += " return"; | ||||||||||||
1776 | |||||||||||||
1777 | ReplaceText(startLoc, 6, buf); | ||||||||||||
1778 | InsertText(onePastSemiLoc, "}"); | ||||||||||||
1779 | } | ||||||||||||
1780 | } | ||||||||||||
1781 | |||||||||||||
1782 | Stmt *RewriteObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) { | ||||||||||||
1783 | // Get the start location and compute the semi location. | ||||||||||||
1784 | SourceLocation startLoc = S->getBeginLoc(); | ||||||||||||
1785 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1786 | |||||||||||||
1787 | assert((*startBuf == '@') && "bogus @try location")(((*startBuf == '@') && "bogus @try location") ? static_cast <void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @try location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1787, __PRETTY_FUNCTION__)); | ||||||||||||
1788 | |||||||||||||
1789 | std::string buf; | ||||||||||||
1790 | // declare a new scope with two variables, _stack and _rethrow. | ||||||||||||
1791 | buf = "/* @try scope begin */ { struct _objc_exception_data {\n"; | ||||||||||||
1792 | buf += "int buf[18/*32-bit i386*/];\n"; | ||||||||||||
1793 | buf += "char *pointers[4];} _stack;\n"; | ||||||||||||
1794 | buf += "id volatile _rethrow = 0;\n"; | ||||||||||||
1795 | buf += "objc_exception_try_enter(&_stack);\n"; | ||||||||||||
1796 | buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n"; | ||||||||||||
1797 | |||||||||||||
1798 | ReplaceText(startLoc, 4, buf); | ||||||||||||
1799 | |||||||||||||
1800 | startLoc = S->getTryBody()->getEndLoc(); | ||||||||||||
1801 | startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1802 | |||||||||||||
1803 | assert((*startBuf == '}') && "bogus @try block")(((*startBuf == '}') && "bogus @try block") ? static_cast <void> (0) : __assert_fail ("(*startBuf == '}') && \"bogus @try block\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1803, __PRETTY_FUNCTION__)); | ||||||||||||
1804 | |||||||||||||
1805 | SourceLocation lastCurlyLoc = startLoc; | ||||||||||||
1806 | if (S->getNumCatchStmts()) { | ||||||||||||
1807 | startLoc = startLoc.getLocWithOffset(1); | ||||||||||||
1808 | buf = " /* @catch begin */ else {\n"; | ||||||||||||
1809 | buf += " id _caught = objc_exception_extract(&_stack);\n"; | ||||||||||||
1810 | buf += " objc_exception_try_enter (&_stack);\n"; | ||||||||||||
1811 | buf += " if (_setjmp(_stack.buf))\n"; | ||||||||||||
1812 | buf += " _rethrow = objc_exception_extract(&_stack);\n"; | ||||||||||||
1813 | buf += " else { /* @catch continue */"; | ||||||||||||
1814 | |||||||||||||
1815 | InsertText(startLoc, buf); | ||||||||||||
1816 | } else { /* no catch list */ | ||||||||||||
1817 | buf = "}\nelse {\n"; | ||||||||||||
1818 | buf += " _rethrow = objc_exception_extract(&_stack);\n"; | ||||||||||||
1819 | buf += "}"; | ||||||||||||
1820 | ReplaceText(lastCurlyLoc, 1, buf); | ||||||||||||
1821 | } | ||||||||||||
1822 | Stmt *lastCatchBody = nullptr; | ||||||||||||
1823 | for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I) { | ||||||||||||
1824 | ObjCAtCatchStmt *Catch = S->getCatchStmt(I); | ||||||||||||
1825 | VarDecl *catchDecl = Catch->getCatchParamDecl(); | ||||||||||||
1826 | |||||||||||||
1827 | if (I == 0) | ||||||||||||
1828 | buf = "if ("; // we are generating code for the first catch clause | ||||||||||||
1829 | else | ||||||||||||
1830 | buf = "else if ("; | ||||||||||||
1831 | startLoc = Catch->getBeginLoc(); | ||||||||||||
1832 | startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1833 | |||||||||||||
1834 | assert((*startBuf == '@') && "bogus @catch location")(((*startBuf == '@') && "bogus @catch location") ? static_cast <void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @catch location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1834, __PRETTY_FUNCTION__)); | ||||||||||||
1835 | |||||||||||||
1836 | const char *lParenLoc = strchr(startBuf, '('); | ||||||||||||
1837 | |||||||||||||
1838 | if (Catch->hasEllipsis()) { | ||||||||||||
1839 | // Now rewrite the body... | ||||||||||||
1840 | lastCatchBody = Catch->getCatchBody(); | ||||||||||||
1841 | SourceLocation bodyLoc = lastCatchBody->getBeginLoc(); | ||||||||||||
1842 | const char *bodyBuf = SM->getCharacterData(bodyLoc); | ||||||||||||
1843 | assert(*SM->getCharacterData(Catch->getRParenLoc()) == ')' &&((*SM->getCharacterData(Catch->getRParenLoc()) == ')' && "bogus @catch paren location") ? static_cast<void> (0) : __assert_fail ("*SM->getCharacterData(Catch->getRParenLoc()) == ')' && \"bogus @catch paren location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1844, __PRETTY_FUNCTION__)) | ||||||||||||
1844 | "bogus @catch paren location")((*SM->getCharacterData(Catch->getRParenLoc()) == ')' && "bogus @catch paren location") ? static_cast<void> (0) : __assert_fail ("*SM->getCharacterData(Catch->getRParenLoc()) == ')' && \"bogus @catch paren location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1844, __PRETTY_FUNCTION__)); | ||||||||||||
1845 | assert((*bodyBuf == '{') && "bogus @catch body location")(((*bodyBuf == '{') && "bogus @catch body location") ? static_cast<void> (0) : __assert_fail ("(*bodyBuf == '{') && \"bogus @catch body location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1845, __PRETTY_FUNCTION__)); | ||||||||||||
1846 | |||||||||||||
1847 | buf += "1) { id _tmp = _caught;"; | ||||||||||||
1848 | Rewrite.ReplaceText(startLoc, bodyBuf-startBuf+1, buf); | ||||||||||||
1849 | } else if (catchDecl) { | ||||||||||||
1850 | QualType t = catchDecl->getType(); | ||||||||||||
1851 | if (t == Context->getObjCIdType()) { | ||||||||||||
1852 | buf += "1) { "; | ||||||||||||
1853 | ReplaceText(startLoc, lParenLoc-startBuf+1, buf); | ||||||||||||
1854 | } else if (const ObjCObjectPointerType *Ptr = | ||||||||||||
1855 | t->getAs<ObjCObjectPointerType>()) { | ||||||||||||
1856 | // Should be a pointer to a class. | ||||||||||||
1857 | ObjCInterfaceDecl *IDecl = Ptr->getObjectType()->getInterface(); | ||||||||||||
1858 | if (IDecl) { | ||||||||||||
1859 | buf += "objc_exception_match((struct objc_class *)objc_getClass(\""; | ||||||||||||
1860 | buf += IDecl->getNameAsString(); | ||||||||||||
1861 | buf += "\"), (struct objc_object *)_caught)) { "; | ||||||||||||
1862 | ReplaceText(startLoc, lParenLoc-startBuf+1, buf); | ||||||||||||
1863 | } | ||||||||||||
1864 | } | ||||||||||||
1865 | // Now rewrite the body... | ||||||||||||
1866 | lastCatchBody = Catch->getCatchBody(); | ||||||||||||
1867 | SourceLocation rParenLoc = Catch->getRParenLoc(); | ||||||||||||
1868 | SourceLocation bodyLoc = lastCatchBody->getBeginLoc(); | ||||||||||||
1869 | const char *bodyBuf = SM->getCharacterData(bodyLoc); | ||||||||||||
1870 | const char *rParenBuf = SM->getCharacterData(rParenLoc); | ||||||||||||
1871 | assert((*rParenBuf == ')') && "bogus @catch paren location")(((*rParenBuf == ')') && "bogus @catch paren location" ) ? static_cast<void> (0) : __assert_fail ("(*rParenBuf == ')') && \"bogus @catch paren location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1871, __PRETTY_FUNCTION__)); | ||||||||||||
1872 | assert((*bodyBuf == '{') && "bogus @catch body location")(((*bodyBuf == '{') && "bogus @catch body location") ? static_cast<void> (0) : __assert_fail ("(*bodyBuf == '{') && \"bogus @catch body location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1872, __PRETTY_FUNCTION__)); | ||||||||||||
1873 | |||||||||||||
1874 | // Here we replace ") {" with "= _caught;" (which initializes and | ||||||||||||
1875 | // declares the @catch parameter). | ||||||||||||
1876 | ReplaceText(rParenLoc, bodyBuf-rParenBuf+1, " = _caught;"); | ||||||||||||
1877 | } else { | ||||||||||||
1878 | llvm_unreachable("@catch rewrite bug")::llvm::llvm_unreachable_internal("@catch rewrite bug", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1878); | ||||||||||||
1879 | } | ||||||||||||
1880 | } | ||||||||||||
1881 | // Complete the catch list... | ||||||||||||
1882 | if (lastCatchBody) { | ||||||||||||
1883 | SourceLocation bodyLoc = lastCatchBody->getEndLoc(); | ||||||||||||
1884 | assert(*SM->getCharacterData(bodyLoc) == '}' &&((*SM->getCharacterData(bodyLoc) == '}' && "bogus @catch body location" ) ? static_cast<void> (0) : __assert_fail ("*SM->getCharacterData(bodyLoc) == '}' && \"bogus @catch body location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1885, __PRETTY_FUNCTION__)) | ||||||||||||
1885 | "bogus @catch body location")((*SM->getCharacterData(bodyLoc) == '}' && "bogus @catch body location" ) ? static_cast<void> (0) : __assert_fail ("*SM->getCharacterData(bodyLoc) == '}' && \"bogus @catch body location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1885, __PRETTY_FUNCTION__)); | ||||||||||||
1886 | |||||||||||||
1887 | // Insert the last (implicit) else clause *before* the right curly brace. | ||||||||||||
1888 | bodyLoc = bodyLoc.getLocWithOffset(-1); | ||||||||||||
1889 | buf = "} /* last catch end */\n"; | ||||||||||||
1890 | buf += "else {\n"; | ||||||||||||
1891 | buf += " _rethrow = _caught;\n"; | ||||||||||||
1892 | buf += " objc_exception_try_exit(&_stack);\n"; | ||||||||||||
1893 | buf += "} } /* @catch end */\n"; | ||||||||||||
1894 | if (!S->getFinallyStmt()) | ||||||||||||
1895 | buf += "}\n"; | ||||||||||||
1896 | InsertText(bodyLoc, buf); | ||||||||||||
1897 | |||||||||||||
1898 | // Set lastCurlyLoc | ||||||||||||
1899 | lastCurlyLoc = lastCatchBody->getEndLoc(); | ||||||||||||
1900 | } | ||||||||||||
1901 | if (ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt()) { | ||||||||||||
1902 | startLoc = finalStmt->getBeginLoc(); | ||||||||||||
1903 | startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1904 | assert((*startBuf == '@') && "bogus @finally start")(((*startBuf == '@') && "bogus @finally start") ? static_cast <void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @finally start\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1904, __PRETTY_FUNCTION__)); | ||||||||||||
1905 | |||||||||||||
1906 | ReplaceText(startLoc, 8, "/* @finally */"); | ||||||||||||
1907 | |||||||||||||
1908 | Stmt *body = finalStmt->getFinallyBody(); | ||||||||||||
1909 | SourceLocation startLoc = body->getBeginLoc(); | ||||||||||||
1910 | SourceLocation endLoc = body->getEndLoc(); | ||||||||||||
1911 | assert(*SM->getCharacterData(startLoc) == '{' &&((*SM->getCharacterData(startLoc) == '{' && "bogus @finally body location" ) ? static_cast<void> (0) : __assert_fail ("*SM->getCharacterData(startLoc) == '{' && \"bogus @finally body location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1912, __PRETTY_FUNCTION__)) | ||||||||||||
1912 | "bogus @finally body location")((*SM->getCharacterData(startLoc) == '{' && "bogus @finally body location" ) ? static_cast<void> (0) : __assert_fail ("*SM->getCharacterData(startLoc) == '{' && \"bogus @finally body location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1912, __PRETTY_FUNCTION__)); | ||||||||||||
1913 | assert(*SM->getCharacterData(endLoc) == '}' &&((*SM->getCharacterData(endLoc) == '}' && "bogus @finally body location" ) ? static_cast<void> (0) : __assert_fail ("*SM->getCharacterData(endLoc) == '}' && \"bogus @finally body location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1914, __PRETTY_FUNCTION__)) | ||||||||||||
1914 | "bogus @finally body location")((*SM->getCharacterData(endLoc) == '}' && "bogus @finally body location" ) ? static_cast<void> (0) : __assert_fail ("*SM->getCharacterData(endLoc) == '}' && \"bogus @finally body location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1914, __PRETTY_FUNCTION__)); | ||||||||||||
1915 | |||||||||||||
1916 | startLoc = startLoc.getLocWithOffset(1); | ||||||||||||
1917 | InsertText(startLoc, " if (!_rethrow) objc_exception_try_exit(&_stack);\n"); | ||||||||||||
1918 | endLoc = endLoc.getLocWithOffset(-1); | ||||||||||||
1919 | InsertText(endLoc, " if (_rethrow) objc_exception_throw(_rethrow);\n"); | ||||||||||||
1920 | |||||||||||||
1921 | // Set lastCurlyLoc | ||||||||||||
1922 | lastCurlyLoc = body->getEndLoc(); | ||||||||||||
1923 | |||||||||||||
1924 | // Now check for any return/continue/go statements within the @try. | ||||||||||||
1925 | WarnAboutReturnGotoStmts(S->getTryBody()); | ||||||||||||
1926 | } else { /* no finally clause - make sure we synthesize an implicit one */ | ||||||||||||
1927 | buf = "{ /* implicit finally clause */\n"; | ||||||||||||
1928 | buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n"; | ||||||||||||
1929 | buf += " if (_rethrow) objc_exception_throw(_rethrow);\n"; | ||||||||||||
1930 | buf += "}"; | ||||||||||||
1931 | ReplaceText(lastCurlyLoc, 1, buf); | ||||||||||||
1932 | |||||||||||||
1933 | // Now check for any return/continue/go statements within the @try. | ||||||||||||
1934 | // The implicit finally clause won't called if the @try contains any | ||||||||||||
1935 | // jump statements. | ||||||||||||
1936 | bool hasReturns = false; | ||||||||||||
1937 | HasReturnStmts(S->getTryBody(), hasReturns); | ||||||||||||
1938 | if (hasReturns) | ||||||||||||
1939 | RewriteTryReturnStmts(S->getTryBody()); | ||||||||||||
1940 | } | ||||||||||||
1941 | // Now emit the final closing curly brace... | ||||||||||||
1942 | lastCurlyLoc = lastCurlyLoc.getLocWithOffset(1); | ||||||||||||
1943 | InsertText(lastCurlyLoc, " } /* @try scope end */\n"); | ||||||||||||
1944 | return nullptr; | ||||||||||||
1945 | } | ||||||||||||
1946 | |||||||||||||
1947 | // This can't be done with ReplaceStmt(S, ThrowExpr), since | ||||||||||||
1948 | // the throw expression is typically a message expression that's already | ||||||||||||
1949 | // been rewritten! (which implies the SourceLocation's are invalid). | ||||||||||||
1950 | Stmt *RewriteObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) { | ||||||||||||
1951 | // Get the start location and compute the semi location. | ||||||||||||
1952 | SourceLocation startLoc = S->getBeginLoc(); | ||||||||||||
1953 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
1954 | |||||||||||||
1955 | assert((*startBuf == '@') && "bogus @throw location")(((*startBuf == '@') && "bogus @throw location") ? static_cast <void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @throw location\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1955, __PRETTY_FUNCTION__)); | ||||||||||||
1956 | |||||||||||||
1957 | std::string buf; | ||||||||||||
1958 | /* void objc_exception_throw(id) __attribute__((noreturn)); */ | ||||||||||||
1959 | if (S->getThrowExpr()) | ||||||||||||
1960 | buf = "objc_exception_throw("; | ||||||||||||
1961 | else // add an implicit argument | ||||||||||||
1962 | buf = "objc_exception_throw(_caught"; | ||||||||||||
1963 | |||||||||||||
1964 | // handle "@ throw" correctly. | ||||||||||||
1965 | const char *wBuf = strchr(startBuf, 'w'); | ||||||||||||
1966 | assert((*wBuf == 'w') && "@throw: can't find 'w'")(((*wBuf == 'w') && "@throw: can't find 'w'") ? static_cast <void> (0) : __assert_fail ("(*wBuf == 'w') && \"@throw: can't find 'w'\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1966, __PRETTY_FUNCTION__)); | ||||||||||||
1967 | ReplaceText(startLoc, wBuf-startBuf+1, buf); | ||||||||||||
1968 | |||||||||||||
1969 | const char *semiBuf = strchr(startBuf, ';'); | ||||||||||||
1970 | assert((*semiBuf == ';') && "@throw: can't find ';'")(((*semiBuf == ';') && "@throw: can't find ';'") ? static_cast <void> (0) : __assert_fail ("(*semiBuf == ';') && \"@throw: can't find ';'\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1970, __PRETTY_FUNCTION__)); | ||||||||||||
1971 | SourceLocation semiLoc = startLoc.getLocWithOffset(semiBuf-startBuf); | ||||||||||||
1972 | ReplaceText(semiLoc, 1, ");"); | ||||||||||||
1973 | return nullptr; | ||||||||||||
1974 | } | ||||||||||||
1975 | |||||||||||||
1976 | Stmt *RewriteObjC::RewriteAtEncode(ObjCEncodeExpr *Exp) { | ||||||||||||
1977 | // Create a new string expression. | ||||||||||||
1978 | std::string StrEncoding; | ||||||||||||
1979 | Context->getObjCEncodingForType(Exp->getEncodedType(), StrEncoding); | ||||||||||||
1980 | Expr *Replacement = getStringLiteral(StrEncoding); | ||||||||||||
1981 | ReplaceStmt(Exp, Replacement); | ||||||||||||
1982 | |||||||||||||
1983 | // Replace this subexpr in the parent. | ||||||||||||
1984 | // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info. | ||||||||||||
1985 | return Replacement; | ||||||||||||
1986 | } | ||||||||||||
1987 | |||||||||||||
1988 | Stmt *RewriteObjC::RewriteAtSelector(ObjCSelectorExpr *Exp) { | ||||||||||||
1989 | if (!SelGetUidFunctionDecl) | ||||||||||||
1990 | SynthSelGetUidFunctionDecl(); | ||||||||||||
1991 | assert(SelGetUidFunctionDecl && "Can't find sel_registerName() decl")((SelGetUidFunctionDecl && "Can't find sel_registerName() decl" ) ? static_cast<void> (0) : __assert_fail ("SelGetUidFunctionDecl && \"Can't find sel_registerName() decl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 1991, __PRETTY_FUNCTION__)); | ||||||||||||
1992 | // Create a call to sel_registerName("selName"). | ||||||||||||
1993 | SmallVector<Expr*, 8> SelExprs; | ||||||||||||
1994 | SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString())); | ||||||||||||
1995 | CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl, | ||||||||||||
1996 | SelExprs); | ||||||||||||
1997 | ReplaceStmt(Exp, SelExp); | ||||||||||||
1998 | // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info. | ||||||||||||
1999 | return SelExp; | ||||||||||||
2000 | } | ||||||||||||
2001 | |||||||||||||
2002 | CallExpr * | ||||||||||||
2003 | RewriteObjC::SynthesizeCallToFunctionDecl(FunctionDecl *FD, | ||||||||||||
2004 | ArrayRef<Expr *> Args, | ||||||||||||
2005 | SourceLocation StartLoc, | ||||||||||||
2006 | SourceLocation EndLoc) { | ||||||||||||
2007 | // Get the type, we will need to reference it in a couple spots. | ||||||||||||
2008 | QualType msgSendType = FD->getType(); | ||||||||||||
2009 | |||||||||||||
2010 | // Create a reference to the objc_msgSend() declaration. | ||||||||||||
2011 | DeclRefExpr *DRE = new (Context) DeclRefExpr(*Context, FD, false, msgSendType, | ||||||||||||
2012 | VK_LValue, SourceLocation()); | ||||||||||||
2013 | |||||||||||||
2014 | // Now, we cast the reference to a pointer to the objc_msgSend type. | ||||||||||||
2015 | QualType pToFunc = Context->getPointerType(msgSendType); | ||||||||||||
2016 | ImplicitCastExpr *ICE = | ||||||||||||
2017 | ImplicitCastExpr::Create(*Context, pToFunc, CK_FunctionToPointerDecay, | ||||||||||||
2018 | DRE, nullptr, VK_RValue); | ||||||||||||
2019 | |||||||||||||
2020 | const FunctionType *FT = msgSendType->getAs<FunctionType>(); | ||||||||||||
2021 | |||||||||||||
2022 | CallExpr *Exp = CallExpr::Create( | ||||||||||||
2023 | *Context, ICE, Args, FT->getCallResultType(*Context), VK_RValue, EndLoc); | ||||||||||||
2024 | return Exp; | ||||||||||||
2025 | } | ||||||||||||
2026 | |||||||||||||
2027 | static bool scanForProtocolRefs(const char *startBuf, const char *endBuf, | ||||||||||||
2028 | const char *&startRef, const char *&endRef) { | ||||||||||||
2029 | while (startBuf < endBuf) { | ||||||||||||
2030 | if (*startBuf == '<') | ||||||||||||
2031 | startRef = startBuf; // mark the start. | ||||||||||||
2032 | if (*startBuf == '>') { | ||||||||||||
2033 | if (startRef && *startRef == '<') { | ||||||||||||
2034 | endRef = startBuf; // mark the end. | ||||||||||||
2035 | return true; | ||||||||||||
2036 | } | ||||||||||||
2037 | return false; | ||||||||||||
2038 | } | ||||||||||||
2039 | startBuf++; | ||||||||||||
2040 | } | ||||||||||||
2041 | return false; | ||||||||||||
2042 | } | ||||||||||||
2043 | |||||||||||||
2044 | static void scanToNextArgument(const char *&argRef) { | ||||||||||||
2045 | int angle = 0; | ||||||||||||
2046 | while (*argRef != ')' && (*argRef != ',' || angle > 0)) { | ||||||||||||
2047 | if (*argRef == '<') | ||||||||||||
2048 | angle++; | ||||||||||||
2049 | else if (*argRef == '>') | ||||||||||||
2050 | angle--; | ||||||||||||
2051 | argRef++; | ||||||||||||
2052 | } | ||||||||||||
2053 | assert(angle == 0 && "scanToNextArgument - bad protocol type syntax")((angle == 0 && "scanToNextArgument - bad protocol type syntax" ) ? static_cast<void> (0) : __assert_fail ("angle == 0 && \"scanToNextArgument - bad protocol type syntax\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2053, __PRETTY_FUNCTION__)); | ||||||||||||
2054 | } | ||||||||||||
2055 | |||||||||||||
2056 | bool RewriteObjC::needToScanForQualifiers(QualType T) { | ||||||||||||
2057 | if (T->isObjCQualifiedIdType()) | ||||||||||||
2058 | return true; | ||||||||||||
2059 | if (const PointerType *PT = T->getAs<PointerType>()) { | ||||||||||||
2060 | if (PT->getPointeeType()->isObjCQualifiedIdType()) | ||||||||||||
2061 | return true; | ||||||||||||
2062 | } | ||||||||||||
2063 | if (T->isObjCObjectPointerType()) { | ||||||||||||
2064 | T = T->getPointeeType(); | ||||||||||||
2065 | return T->isObjCQualifiedInterfaceType(); | ||||||||||||
2066 | } | ||||||||||||
2067 | if (T->isArrayType()) { | ||||||||||||
2068 | QualType ElemTy = Context->getBaseElementType(T); | ||||||||||||
2069 | return needToScanForQualifiers(ElemTy); | ||||||||||||
2070 | } | ||||||||||||
2071 | return false; | ||||||||||||
2072 | } | ||||||||||||
2073 | |||||||||||||
2074 | void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Expr *E) { | ||||||||||||
2075 | QualType Type = E->getType(); | ||||||||||||
2076 | if (needToScanForQualifiers(Type)) { | ||||||||||||
2077 | SourceLocation Loc, EndLoc; | ||||||||||||
2078 | |||||||||||||
2079 | if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) { | ||||||||||||
2080 | Loc = ECE->getLParenLoc(); | ||||||||||||
2081 | EndLoc = ECE->getRParenLoc(); | ||||||||||||
2082 | } else { | ||||||||||||
2083 | Loc = E->getBeginLoc(); | ||||||||||||
2084 | EndLoc = E->getEndLoc(); | ||||||||||||
2085 | } | ||||||||||||
2086 | // This will defend against trying to rewrite synthesized expressions. | ||||||||||||
2087 | if (Loc.isInvalid() || EndLoc.isInvalid()) | ||||||||||||
2088 | return; | ||||||||||||
2089 | |||||||||||||
2090 | const char *startBuf = SM->getCharacterData(Loc); | ||||||||||||
2091 | const char *endBuf = SM->getCharacterData(EndLoc); | ||||||||||||
2092 | const char *startRef = nullptr, *endRef = nullptr; | ||||||||||||
2093 | if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) { | ||||||||||||
2094 | // Get the locations of the startRef, endRef. | ||||||||||||
2095 | SourceLocation LessLoc = Loc.getLocWithOffset(startRef-startBuf); | ||||||||||||
2096 | SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-startBuf+1); | ||||||||||||
2097 | // Comment out the protocol references. | ||||||||||||
2098 | InsertText(LessLoc, "/*"); | ||||||||||||
2099 | InsertText(GreaterLoc, "*/"); | ||||||||||||
2100 | } | ||||||||||||
2101 | } | ||||||||||||
2102 | } | ||||||||||||
2103 | |||||||||||||
2104 | void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Decl *Dcl) { | ||||||||||||
2105 | SourceLocation Loc; | ||||||||||||
2106 | QualType Type; | ||||||||||||
2107 | const FunctionProtoType *proto = nullptr; | ||||||||||||
2108 | if (VarDecl *VD = dyn_cast<VarDecl>(Dcl)) { | ||||||||||||
2109 | Loc = VD->getLocation(); | ||||||||||||
2110 | Type = VD->getType(); | ||||||||||||
2111 | } | ||||||||||||
2112 | else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Dcl)) { | ||||||||||||
2113 | Loc = FD->getLocation(); | ||||||||||||
2114 | // Check for ObjC 'id' and class types that have been adorned with protocol | ||||||||||||
2115 | // information (id<p>, C<p>*). The protocol references need to be rewritten! | ||||||||||||
2116 | const FunctionType *funcType = FD->getType()->getAs<FunctionType>(); | ||||||||||||
2117 | assert(funcType && "missing function type")((funcType && "missing function type") ? static_cast< void> (0) : __assert_fail ("funcType && \"missing function type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2117, __PRETTY_FUNCTION__)); | ||||||||||||
2118 | proto = dyn_cast<FunctionProtoType>(funcType); | ||||||||||||
2119 | if (!proto) | ||||||||||||
2120 | return; | ||||||||||||
2121 | Type = proto->getReturnType(); | ||||||||||||
2122 | } | ||||||||||||
2123 | else if (FieldDecl *FD = dyn_cast<FieldDecl>(Dcl)) { | ||||||||||||
2124 | Loc = FD->getLocation(); | ||||||||||||
2125 | Type = FD->getType(); | ||||||||||||
2126 | } | ||||||||||||
2127 | else | ||||||||||||
2128 | return; | ||||||||||||
2129 | |||||||||||||
2130 | if (needToScanForQualifiers(Type)) { | ||||||||||||
2131 | // Since types are unique, we need to scan the buffer. | ||||||||||||
2132 | |||||||||||||
2133 | const char *endBuf = SM->getCharacterData(Loc); | ||||||||||||
2134 | const char *startBuf = endBuf; | ||||||||||||
2135 | while (*startBuf != ';' && *startBuf != '<' && startBuf != MainFileStart) | ||||||||||||
2136 | startBuf--; // scan backward (from the decl location) for return type. | ||||||||||||
2137 | const char *startRef = nullptr, *endRef = nullptr; | ||||||||||||
2138 | if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) { | ||||||||||||
2139 | // Get the locations of the startRef, endRef. | ||||||||||||
2140 | SourceLocation LessLoc = Loc.getLocWithOffset(startRef-endBuf); | ||||||||||||
2141 | SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-endBuf+1); | ||||||||||||
2142 | // Comment out the protocol references. | ||||||||||||
2143 | InsertText(LessLoc, "/*"); | ||||||||||||
2144 | InsertText(GreaterLoc, "*/"); | ||||||||||||
2145 | } | ||||||||||||
2146 | } | ||||||||||||
2147 | if (!proto) | ||||||||||||
2148 | return; // most likely, was a variable | ||||||||||||
2149 | // Now check arguments. | ||||||||||||
2150 | const char *startBuf = SM->getCharacterData(Loc); | ||||||||||||
2151 | const char *startFuncBuf = startBuf; | ||||||||||||
2152 | for (unsigned i = 0; i < proto->getNumParams(); i++) { | ||||||||||||
2153 | if (needToScanForQualifiers(proto->getParamType(i))) { | ||||||||||||
2154 | // Since types are unique, we need to scan the buffer. | ||||||||||||
2155 | |||||||||||||
2156 | const char *endBuf = startBuf; | ||||||||||||
2157 | // scan forward (from the decl location) for argument types. | ||||||||||||
2158 | scanToNextArgument(endBuf); | ||||||||||||
2159 | const char *startRef = nullptr, *endRef = nullptr; | ||||||||||||
2160 | if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) { | ||||||||||||
2161 | // Get the locations of the startRef, endRef. | ||||||||||||
2162 | SourceLocation LessLoc = | ||||||||||||
2163 | Loc.getLocWithOffset(startRef-startFuncBuf); | ||||||||||||
2164 | SourceLocation GreaterLoc = | ||||||||||||
2165 | Loc.getLocWithOffset(endRef-startFuncBuf+1); | ||||||||||||
2166 | // Comment out the protocol references. | ||||||||||||
2167 | InsertText(LessLoc, "/*"); | ||||||||||||
2168 | InsertText(GreaterLoc, "*/"); | ||||||||||||
2169 | } | ||||||||||||
2170 | startBuf = ++endBuf; | ||||||||||||
2171 | } | ||||||||||||
2172 | else { | ||||||||||||
2173 | // If the function name is derived from a macro expansion, then the | ||||||||||||
2174 | // argument buffer will not follow the name. Need to speak with Chris. | ||||||||||||
2175 | while (*startBuf && *startBuf != ')' && *startBuf != ',') | ||||||||||||
2176 | startBuf++; // scan forward (from the decl location) for argument types. | ||||||||||||
2177 | startBuf++; | ||||||||||||
2178 | } | ||||||||||||
2179 | } | ||||||||||||
2180 | } | ||||||||||||
2181 | |||||||||||||
2182 | void RewriteObjC::RewriteTypeOfDecl(VarDecl *ND) { | ||||||||||||
2183 | QualType QT = ND->getType(); | ||||||||||||
2184 | const Type* TypePtr = QT->getAs<Type>(); | ||||||||||||
2185 | if (!isa<TypeOfExprType>(TypePtr)) | ||||||||||||
2186 | return; | ||||||||||||
2187 | while (isa<TypeOfExprType>(TypePtr)) { | ||||||||||||
2188 | const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr); | ||||||||||||
2189 | QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType(); | ||||||||||||
2190 | TypePtr = QT->getAs<Type>(); | ||||||||||||
2191 | } | ||||||||||||
2192 | // FIXME. This will not work for multiple declarators; as in: | ||||||||||||
2193 | // __typeof__(a) b,c,d; | ||||||||||||
2194 | std::string TypeAsString(QT.getAsString(Context->getPrintingPolicy())); | ||||||||||||
2195 | SourceLocation DeclLoc = ND->getTypeSpecStartLoc(); | ||||||||||||
2196 | const char *startBuf = SM->getCharacterData(DeclLoc); | ||||||||||||
2197 | if (ND->getInit()) { | ||||||||||||
2198 | std::string Name(ND->getNameAsString()); | ||||||||||||
2199 | TypeAsString += " " + Name + " = "; | ||||||||||||
2200 | Expr *E = ND->getInit(); | ||||||||||||
2201 | SourceLocation startLoc; | ||||||||||||
2202 | if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) | ||||||||||||
2203 | startLoc = ECE->getLParenLoc(); | ||||||||||||
2204 | else | ||||||||||||
2205 | startLoc = E->getBeginLoc(); | ||||||||||||
2206 | startLoc = SM->getExpansionLoc(startLoc); | ||||||||||||
2207 | const char *endBuf = SM->getCharacterData(startLoc); | ||||||||||||
2208 | ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString); | ||||||||||||
2209 | } | ||||||||||||
2210 | else { | ||||||||||||
2211 | SourceLocation X = ND->getEndLoc(); | ||||||||||||
2212 | X = SM->getExpansionLoc(X); | ||||||||||||
2213 | const char *endBuf = SM->getCharacterData(X); | ||||||||||||
2214 | ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString); | ||||||||||||
2215 | } | ||||||||||||
2216 | } | ||||||||||||
2217 | |||||||||||||
2218 | // SynthSelGetUidFunctionDecl - SEL sel_registerName(const char *str); | ||||||||||||
2219 | void RewriteObjC::SynthSelGetUidFunctionDecl() { | ||||||||||||
2220 | IdentifierInfo *SelGetUidIdent = &Context->Idents.get("sel_registerName"); | ||||||||||||
2221 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2222 | ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst())); | ||||||||||||
2223 | QualType getFuncType = | ||||||||||||
2224 | getSimpleFunctionType(Context->getObjCSelType(), ArgTys); | ||||||||||||
2225 | SelGetUidFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2226 | SourceLocation(), | ||||||||||||
2227 | SourceLocation(), | ||||||||||||
2228 | SelGetUidIdent, getFuncType, | ||||||||||||
2229 | nullptr, SC_Extern); | ||||||||||||
2230 | } | ||||||||||||
2231 | |||||||||||||
2232 | void RewriteObjC::RewriteFunctionDecl(FunctionDecl *FD) { | ||||||||||||
2233 | // declared in <objc/objc.h> | ||||||||||||
2234 | if (FD->getIdentifier() && | ||||||||||||
2235 | FD->getName() == "sel_registerName") { | ||||||||||||
2236 | SelGetUidFunctionDecl = FD; | ||||||||||||
2237 | return; | ||||||||||||
2238 | } | ||||||||||||
2239 | RewriteObjCQualifiedInterfaceTypes(FD); | ||||||||||||
2240 | } | ||||||||||||
2241 | |||||||||||||
2242 | void RewriteObjC::RewriteBlockPointerType(std::string& Str, QualType Type) { | ||||||||||||
2243 | std::string TypeString(Type.getAsString(Context->getPrintingPolicy())); | ||||||||||||
2244 | const char *argPtr = TypeString.c_str(); | ||||||||||||
2245 | if (!strchr(argPtr, '^')) { | ||||||||||||
2246 | Str += TypeString; | ||||||||||||
2247 | return; | ||||||||||||
2248 | } | ||||||||||||
2249 | while (*argPtr) { | ||||||||||||
2250 | Str += (*argPtr == '^' ? '*' : *argPtr); | ||||||||||||
2251 | argPtr++; | ||||||||||||
2252 | } | ||||||||||||
2253 | } | ||||||||||||
2254 | |||||||||||||
2255 | // FIXME. Consolidate this routine with RewriteBlockPointerType. | ||||||||||||
2256 | void RewriteObjC::RewriteBlockPointerTypeVariable(std::string& Str, | ||||||||||||
2257 | ValueDecl *VD) { | ||||||||||||
2258 | QualType Type = VD->getType(); | ||||||||||||
2259 | std::string TypeString(Type.getAsString(Context->getPrintingPolicy())); | ||||||||||||
2260 | const char *argPtr = TypeString.c_str(); | ||||||||||||
2261 | int paren = 0; | ||||||||||||
2262 | while (*argPtr) { | ||||||||||||
2263 | switch (*argPtr) { | ||||||||||||
2264 | case '(': | ||||||||||||
2265 | Str += *argPtr; | ||||||||||||
2266 | paren++; | ||||||||||||
2267 | break; | ||||||||||||
2268 | case ')': | ||||||||||||
2269 | Str += *argPtr; | ||||||||||||
2270 | paren--; | ||||||||||||
2271 | break; | ||||||||||||
2272 | case '^': | ||||||||||||
2273 | Str += '*'; | ||||||||||||
2274 | if (paren == 1) | ||||||||||||
2275 | Str += VD->getNameAsString(); | ||||||||||||
2276 | break; | ||||||||||||
2277 | default: | ||||||||||||
2278 | Str += *argPtr; | ||||||||||||
2279 | break; | ||||||||||||
2280 | } | ||||||||||||
2281 | argPtr++; | ||||||||||||
2282 | } | ||||||||||||
2283 | } | ||||||||||||
2284 | |||||||||||||
2285 | void RewriteObjC::RewriteBlockLiteralFunctionDecl(FunctionDecl *FD) { | ||||||||||||
2286 | SourceLocation FunLocStart = FD->getTypeSpecStartLoc(); | ||||||||||||
2287 | const FunctionType *funcType = FD->getType()->getAs<FunctionType>(); | ||||||||||||
2288 | const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(funcType); | ||||||||||||
2289 | if (!proto) | ||||||||||||
2290 | return; | ||||||||||||
2291 | QualType Type = proto->getReturnType(); | ||||||||||||
2292 | std::string FdStr = Type.getAsString(Context->getPrintingPolicy()); | ||||||||||||
2293 | FdStr += " "; | ||||||||||||
2294 | FdStr += FD->getName(); | ||||||||||||
2295 | FdStr += "("; | ||||||||||||
2296 | unsigned numArgs = proto->getNumParams(); | ||||||||||||
2297 | for (unsigned i = 0; i < numArgs; i++) { | ||||||||||||
2298 | QualType ArgType = proto->getParamType(i); | ||||||||||||
2299 | RewriteBlockPointerType(FdStr, ArgType); | ||||||||||||
2300 | if (i+1 < numArgs) | ||||||||||||
2301 | FdStr += ", "; | ||||||||||||
2302 | } | ||||||||||||
2303 | FdStr += ");\n"; | ||||||||||||
2304 | InsertText(FunLocStart, FdStr); | ||||||||||||
2305 | CurFunctionDeclToDeclareForBlock = nullptr; | ||||||||||||
2306 | } | ||||||||||||
2307 | |||||||||||||
2308 | // SynthSuperConstructorFunctionDecl - id objc_super(id obj, id super); | ||||||||||||
2309 | void RewriteObjC::SynthSuperConstructorFunctionDecl() { | ||||||||||||
2310 | if (SuperConstructorFunctionDecl) | ||||||||||||
2311 | return; | ||||||||||||
2312 | IdentifierInfo *msgSendIdent = &Context->Idents.get("__rw_objc_super"); | ||||||||||||
2313 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2314 | QualType argT = Context->getObjCIdType(); | ||||||||||||
2315 | assert(!argT.isNull() && "Can't find 'id' type")((!argT.isNull() && "Can't find 'id' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'id' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2315, __PRETTY_FUNCTION__)); | ||||||||||||
2316 | ArgTys.push_back(argT); | ||||||||||||
2317 | ArgTys.push_back(argT); | ||||||||||||
2318 | QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(), | ||||||||||||
2319 | ArgTys); | ||||||||||||
2320 | SuperConstructorFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2321 | SourceLocation(), | ||||||||||||
2322 | SourceLocation(), | ||||||||||||
2323 | msgSendIdent, msgSendType, | ||||||||||||
2324 | nullptr, SC_Extern); | ||||||||||||
2325 | } | ||||||||||||
2326 | |||||||||||||
2327 | // SynthMsgSendFunctionDecl - id objc_msgSend(id self, SEL op, ...); | ||||||||||||
2328 | void RewriteObjC::SynthMsgSendFunctionDecl() { | ||||||||||||
2329 | IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend"); | ||||||||||||
2330 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2331 | QualType argT = Context->getObjCIdType(); | ||||||||||||
2332 | assert(!argT.isNull() && "Can't find 'id' type")((!argT.isNull() && "Can't find 'id' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'id' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2332, __PRETTY_FUNCTION__)); | ||||||||||||
2333 | ArgTys.push_back(argT); | ||||||||||||
2334 | argT = Context->getObjCSelType(); | ||||||||||||
2335 | assert(!argT.isNull() && "Can't find 'SEL' type")((!argT.isNull() && "Can't find 'SEL' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'SEL' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2335, __PRETTY_FUNCTION__)); | ||||||||||||
2336 | ArgTys.push_back(argT); | ||||||||||||
2337 | QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(), | ||||||||||||
2338 | ArgTys, /*variadic=*/true); | ||||||||||||
2339 | MsgSendFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2340 | SourceLocation(), | ||||||||||||
2341 | SourceLocation(), | ||||||||||||
2342 | msgSendIdent, msgSendType, | ||||||||||||
2343 | nullptr, SC_Extern); | ||||||||||||
2344 | } | ||||||||||||
2345 | |||||||||||||
2346 | // SynthMsgSendSuperFunctionDecl - id objc_msgSendSuper(struct objc_super *, SEL op, ...); | ||||||||||||
2347 | void RewriteObjC::SynthMsgSendSuperFunctionDecl() { | ||||||||||||
2348 | IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSendSuper"); | ||||||||||||
2349 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2350 | RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl, | ||||||||||||
2351 | SourceLocation(), SourceLocation(), | ||||||||||||
2352 | &Context->Idents.get("objc_super")); | ||||||||||||
2353 | QualType argT = Context->getPointerType(Context->getTagDeclType(RD)); | ||||||||||||
2354 | assert(!argT.isNull() && "Can't build 'struct objc_super *' type")((!argT.isNull() && "Can't build 'struct objc_super *' type" ) ? static_cast<void> (0) : __assert_fail ("!argT.isNull() && \"Can't build 'struct objc_super *' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2354, __PRETTY_FUNCTION__)); | ||||||||||||
2355 | ArgTys.push_back(argT); | ||||||||||||
2356 | argT = Context->getObjCSelType(); | ||||||||||||
2357 | assert(!argT.isNull() && "Can't find 'SEL' type")((!argT.isNull() && "Can't find 'SEL' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'SEL' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2357, __PRETTY_FUNCTION__)); | ||||||||||||
2358 | ArgTys.push_back(argT); | ||||||||||||
2359 | QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(), | ||||||||||||
2360 | ArgTys, /*variadic=*/true); | ||||||||||||
2361 | MsgSendSuperFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2362 | SourceLocation(), | ||||||||||||
2363 | SourceLocation(), | ||||||||||||
2364 | msgSendIdent, msgSendType, | ||||||||||||
2365 | nullptr, SC_Extern); | ||||||||||||
2366 | } | ||||||||||||
2367 | |||||||||||||
2368 | // SynthMsgSendStretFunctionDecl - id objc_msgSend_stret(id self, SEL op, ...); | ||||||||||||
2369 | void RewriteObjC::SynthMsgSendStretFunctionDecl() { | ||||||||||||
2370 | IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_stret"); | ||||||||||||
2371 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2372 | QualType argT = Context->getObjCIdType(); | ||||||||||||
2373 | assert(!argT.isNull() && "Can't find 'id' type")((!argT.isNull() && "Can't find 'id' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'id' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2373, __PRETTY_FUNCTION__)); | ||||||||||||
2374 | ArgTys.push_back(argT); | ||||||||||||
2375 | argT = Context->getObjCSelType(); | ||||||||||||
2376 | assert(!argT.isNull() && "Can't find 'SEL' type")((!argT.isNull() && "Can't find 'SEL' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'SEL' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2376, __PRETTY_FUNCTION__)); | ||||||||||||
2377 | ArgTys.push_back(argT); | ||||||||||||
2378 | QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(), | ||||||||||||
2379 | ArgTys, /*variadic=*/true); | ||||||||||||
2380 | MsgSendStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2381 | SourceLocation(), | ||||||||||||
2382 | SourceLocation(), | ||||||||||||
2383 | msgSendIdent, msgSendType, | ||||||||||||
2384 | nullptr, SC_Extern); | ||||||||||||
2385 | } | ||||||||||||
2386 | |||||||||||||
2387 | // SynthMsgSendSuperStretFunctionDecl - | ||||||||||||
2388 | // id objc_msgSendSuper_stret(struct objc_super *, SEL op, ...); | ||||||||||||
2389 | void RewriteObjC::SynthMsgSendSuperStretFunctionDecl() { | ||||||||||||
2390 | IdentifierInfo *msgSendIdent = | ||||||||||||
2391 | &Context->Idents.get("objc_msgSendSuper_stret"); | ||||||||||||
2392 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2393 | RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl, | ||||||||||||
2394 | SourceLocation(), SourceLocation(), | ||||||||||||
2395 | &Context->Idents.get("objc_super")); | ||||||||||||
2396 | QualType argT = Context->getPointerType(Context->getTagDeclType(RD)); | ||||||||||||
2397 | assert(!argT.isNull() && "Can't build 'struct objc_super *' type")((!argT.isNull() && "Can't build 'struct objc_super *' type" ) ? static_cast<void> (0) : __assert_fail ("!argT.isNull() && \"Can't build 'struct objc_super *' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2397, __PRETTY_FUNCTION__)); | ||||||||||||
2398 | ArgTys.push_back(argT); | ||||||||||||
2399 | argT = Context->getObjCSelType(); | ||||||||||||
2400 | assert(!argT.isNull() && "Can't find 'SEL' type")((!argT.isNull() && "Can't find 'SEL' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'SEL' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2400, __PRETTY_FUNCTION__)); | ||||||||||||
2401 | ArgTys.push_back(argT); | ||||||||||||
2402 | QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(), | ||||||||||||
2403 | ArgTys, /*variadic=*/true); | ||||||||||||
2404 | MsgSendSuperStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2405 | SourceLocation(), | ||||||||||||
2406 | SourceLocation(), | ||||||||||||
2407 | msgSendIdent, | ||||||||||||
2408 | msgSendType, nullptr, | ||||||||||||
2409 | SC_Extern); | ||||||||||||
2410 | } | ||||||||||||
2411 | |||||||||||||
2412 | // SynthMsgSendFpretFunctionDecl - double objc_msgSend_fpret(id self, SEL op, ...); | ||||||||||||
2413 | void RewriteObjC::SynthMsgSendFpretFunctionDecl() { | ||||||||||||
2414 | IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_fpret"); | ||||||||||||
2415 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2416 | QualType argT = Context->getObjCIdType(); | ||||||||||||
2417 | assert(!argT.isNull() && "Can't find 'id' type")((!argT.isNull() && "Can't find 'id' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'id' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2417, __PRETTY_FUNCTION__)); | ||||||||||||
2418 | ArgTys.push_back(argT); | ||||||||||||
2419 | argT = Context->getObjCSelType(); | ||||||||||||
2420 | assert(!argT.isNull() && "Can't find 'SEL' type")((!argT.isNull() && "Can't find 'SEL' type") ? static_cast <void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'SEL' type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2420, __PRETTY_FUNCTION__)); | ||||||||||||
2421 | ArgTys.push_back(argT); | ||||||||||||
2422 | QualType msgSendType = getSimpleFunctionType(Context->DoubleTy, | ||||||||||||
2423 | ArgTys, /*variadic=*/true); | ||||||||||||
2424 | MsgSendFpretFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2425 | SourceLocation(), | ||||||||||||
2426 | SourceLocation(), | ||||||||||||
2427 | msgSendIdent, msgSendType, | ||||||||||||
2428 | nullptr, SC_Extern); | ||||||||||||
2429 | } | ||||||||||||
2430 | |||||||||||||
2431 | // SynthGetClassFunctionDecl - id objc_getClass(const char *name); | ||||||||||||
2432 | void RewriteObjC::SynthGetClassFunctionDecl() { | ||||||||||||
2433 | IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getClass"); | ||||||||||||
2434 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2435 | ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst())); | ||||||||||||
2436 | QualType getClassType = getSimpleFunctionType(Context->getObjCIdType(), | ||||||||||||
2437 | ArgTys); | ||||||||||||
2438 | GetClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2439 | SourceLocation(), | ||||||||||||
2440 | SourceLocation(), | ||||||||||||
2441 | getClassIdent, getClassType, | ||||||||||||
2442 | nullptr, SC_Extern); | ||||||||||||
2443 | } | ||||||||||||
2444 | |||||||||||||
2445 | // SynthGetSuperClassFunctionDecl - Class class_getSuperclass(Class cls); | ||||||||||||
2446 | void RewriteObjC::SynthGetSuperClassFunctionDecl() { | ||||||||||||
2447 | IdentifierInfo *getSuperClassIdent = | ||||||||||||
2448 | &Context->Idents.get("class_getSuperclass"); | ||||||||||||
2449 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2450 | ArgTys.push_back(Context->getObjCClassType()); | ||||||||||||
2451 | QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(), | ||||||||||||
2452 | ArgTys); | ||||||||||||
2453 | GetSuperClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2454 | SourceLocation(), | ||||||||||||
2455 | SourceLocation(), | ||||||||||||
2456 | getSuperClassIdent, | ||||||||||||
2457 | getClassType, nullptr, | ||||||||||||
2458 | SC_Extern); | ||||||||||||
2459 | } | ||||||||||||
2460 | |||||||||||||
2461 | // SynthGetMetaClassFunctionDecl - id objc_getMetaClass(const char *name); | ||||||||||||
2462 | void RewriteObjC::SynthGetMetaClassFunctionDecl() { | ||||||||||||
2463 | IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getMetaClass"); | ||||||||||||
2464 | SmallVector<QualType, 16> ArgTys; | ||||||||||||
2465 | ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst())); | ||||||||||||
2466 | QualType getClassType = getSimpleFunctionType(Context->getObjCIdType(), | ||||||||||||
2467 | ArgTys); | ||||||||||||
2468 | GetMetaClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl, | ||||||||||||
2469 | SourceLocation(), | ||||||||||||
2470 | SourceLocation(), | ||||||||||||
2471 | getClassIdent, getClassType, | ||||||||||||
2472 | nullptr, SC_Extern); | ||||||||||||
2473 | } | ||||||||||||
2474 | |||||||||||||
2475 | Stmt *RewriteObjC::RewriteObjCStringLiteral(ObjCStringLiteral *Exp) { | ||||||||||||
2476 | assert(Exp != nullptr && "Expected non-null ObjCStringLiteral")((Exp != nullptr && "Expected non-null ObjCStringLiteral" ) ? static_cast<void> (0) : __assert_fail ("Exp != nullptr && \"Expected non-null ObjCStringLiteral\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2476, __PRETTY_FUNCTION__)); | ||||||||||||
2477 | QualType strType = getConstantStringStructType(); | ||||||||||||
2478 | |||||||||||||
2479 | std::string S = "__NSConstantStringImpl_"; | ||||||||||||
2480 | |||||||||||||
2481 | std::string tmpName = InFileName; | ||||||||||||
2482 | unsigned i; | ||||||||||||
2483 | for (i=0; i < tmpName.length(); i++) { | ||||||||||||
2484 | char c = tmpName.at(i); | ||||||||||||
2485 | // replace any non-alphanumeric characters with '_'. | ||||||||||||
2486 | if (!isAlphanumeric(c)) | ||||||||||||
2487 | tmpName[i] = '_'; | ||||||||||||
2488 | } | ||||||||||||
2489 | S += tmpName; | ||||||||||||
2490 | S += "_"; | ||||||||||||
2491 | S += utostr(NumObjCStringLiterals++); | ||||||||||||
2492 | |||||||||||||
2493 | Preamble += "static __NSConstantStringImpl " + S; | ||||||||||||
2494 | Preamble += " __attribute__ ((section (\"__DATA, __cfstring\"))) = {__CFConstantStringClassReference,"; | ||||||||||||
2495 | Preamble += "0x000007c8,"; // utf8_str | ||||||||||||
2496 | // The pretty printer for StringLiteral handles escape characters properly. | ||||||||||||
2497 | std::string prettyBufS; | ||||||||||||
2498 | llvm::raw_string_ostream prettyBuf(prettyBufS); | ||||||||||||
2499 | Exp->getString()->printPretty(prettyBuf, nullptr, PrintingPolicy(LangOpts)); | ||||||||||||
2500 | Preamble += prettyBuf.str(); | ||||||||||||
2501 | Preamble += ","; | ||||||||||||
2502 | Preamble += utostr(Exp->getString()->getByteLength()) + "};\n"; | ||||||||||||
2503 | |||||||||||||
2504 | VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(), | ||||||||||||
2505 | SourceLocation(), &Context->Idents.get(S), | ||||||||||||
2506 | strType, nullptr, SC_Static); | ||||||||||||
2507 | DeclRefExpr *DRE = new (Context) | ||||||||||||
2508 | DeclRefExpr(*Context, NewVD, false, strType, VK_LValue, SourceLocation()); | ||||||||||||
2509 | Expr *Unop = new (Context) | ||||||||||||
2510 | UnaryOperator(DRE, UO_AddrOf, Context->getPointerType(DRE->getType()), | ||||||||||||
2511 | VK_RValue, OK_Ordinary, SourceLocation(), false); | ||||||||||||
2512 | // cast to NSConstantString * | ||||||||||||
2513 | CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Exp->getType(), | ||||||||||||
2514 | CK_CPointerToObjCPointerCast, Unop); | ||||||||||||
2515 | ReplaceStmt(Exp, cast); | ||||||||||||
2516 | // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info. | ||||||||||||
2517 | return cast; | ||||||||||||
2518 | } | ||||||||||||
2519 | |||||||||||||
2520 | // struct objc_super { struct objc_object *receiver; struct objc_class *super; }; | ||||||||||||
2521 | QualType RewriteObjC::getSuperStructType() { | ||||||||||||
2522 | if (!SuperStructDecl) { | ||||||||||||
2523 | SuperStructDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl, | ||||||||||||
2524 | SourceLocation(), SourceLocation(), | ||||||||||||
2525 | &Context->Idents.get("objc_super")); | ||||||||||||
2526 | QualType FieldTypes[2]; | ||||||||||||
2527 | |||||||||||||
2528 | // struct objc_object *receiver; | ||||||||||||
2529 | FieldTypes[0] = Context->getObjCIdType(); | ||||||||||||
2530 | // struct objc_class *super; | ||||||||||||
2531 | FieldTypes[1] = Context->getObjCClassType(); | ||||||||||||
2532 | |||||||||||||
2533 | // Create fields | ||||||||||||
2534 | for (unsigned i = 0; i < 2; ++i) { | ||||||||||||
2535 | SuperStructDecl->addDecl(FieldDecl::Create(*Context, SuperStructDecl, | ||||||||||||
2536 | SourceLocation(), | ||||||||||||
2537 | SourceLocation(), nullptr, | ||||||||||||
2538 | FieldTypes[i], nullptr, | ||||||||||||
2539 | /*BitWidth=*/nullptr, | ||||||||||||
2540 | /*Mutable=*/false, | ||||||||||||
2541 | ICIS_NoInit)); | ||||||||||||
2542 | } | ||||||||||||
2543 | |||||||||||||
2544 | SuperStructDecl->completeDefinition(); | ||||||||||||
2545 | } | ||||||||||||
2546 | return Context->getTagDeclType(SuperStructDecl); | ||||||||||||
2547 | } | ||||||||||||
2548 | |||||||||||||
2549 | QualType RewriteObjC::getConstantStringStructType() { | ||||||||||||
2550 | if (!ConstantStringDecl) { | ||||||||||||
2551 | ConstantStringDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl, | ||||||||||||
2552 | SourceLocation(), SourceLocation(), | ||||||||||||
2553 | &Context->Idents.get("__NSConstantStringImpl")); | ||||||||||||
2554 | QualType FieldTypes[4]; | ||||||||||||
2555 | |||||||||||||
2556 | // struct objc_object *receiver; | ||||||||||||
2557 | FieldTypes[0] = Context->getObjCIdType(); | ||||||||||||
2558 | // int flags; | ||||||||||||
2559 | FieldTypes[1] = Context->IntTy; | ||||||||||||
2560 | // char *str; | ||||||||||||
2561 | FieldTypes[2] = Context->getPointerType(Context->CharTy); | ||||||||||||
2562 | // long length; | ||||||||||||
2563 | FieldTypes[3] = Context->LongTy; | ||||||||||||
2564 | |||||||||||||
2565 | // Create fields | ||||||||||||
2566 | for (unsigned i = 0; i < 4; ++i) { | ||||||||||||
2567 | ConstantStringDecl->addDecl(FieldDecl::Create(*Context, | ||||||||||||
2568 | ConstantStringDecl, | ||||||||||||
2569 | SourceLocation(), | ||||||||||||
2570 | SourceLocation(), nullptr, | ||||||||||||
2571 | FieldTypes[i], nullptr, | ||||||||||||
2572 | /*BitWidth=*/nullptr, | ||||||||||||
2573 | /*Mutable=*/true, | ||||||||||||
2574 | ICIS_NoInit)); | ||||||||||||
2575 | } | ||||||||||||
2576 | |||||||||||||
2577 | ConstantStringDecl->completeDefinition(); | ||||||||||||
2578 | } | ||||||||||||
2579 | return Context->getTagDeclType(ConstantStringDecl); | ||||||||||||
2580 | } | ||||||||||||
2581 | |||||||||||||
2582 | CallExpr *RewriteObjC::SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor, | ||||||||||||
2583 | QualType msgSendType, | ||||||||||||
2584 | QualType returnType, | ||||||||||||
2585 | SmallVectorImpl<QualType> &ArgTypes, | ||||||||||||
2586 | SmallVectorImpl<Expr*> &MsgExprs, | ||||||||||||
2587 | ObjCMethodDecl *Method) { | ||||||||||||
2588 | // Create a reference to the objc_msgSend_stret() declaration. | ||||||||||||
2589 | DeclRefExpr *STDRE = | ||||||||||||
2590 | new (Context) DeclRefExpr(*Context, MsgSendStretFlavor, false, | ||||||||||||
2591 | msgSendType, VK_LValue, SourceLocation()); | ||||||||||||
2592 | // Need to cast objc_msgSend_stret to "void *" (see above comment). | ||||||||||||
2593 | CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, | ||||||||||||
2594 | Context->getPointerType(Context->VoidTy), | ||||||||||||
2595 | CK_BitCast, STDRE); | ||||||||||||
2596 | // Now do the "normal" pointer to function cast. | ||||||||||||
2597 | QualType castType = getSimpleFunctionType(returnType, ArgTypes, | ||||||||||||
2598 | Method ? Method->isVariadic() | ||||||||||||
2599 | : false); | ||||||||||||
2600 | castType = Context->getPointerType(castType); | ||||||||||||
2601 | cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast, | ||||||||||||
2602 | cast); | ||||||||||||
2603 | |||||||||||||
2604 | // Don't forget the parens to enforce the proper binding. | ||||||||||||
2605 | ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), cast); | ||||||||||||
2606 | |||||||||||||
2607 | const FunctionType *FT = msgSendType->getAs<FunctionType>(); | ||||||||||||
2608 | CallExpr *STCE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(), | ||||||||||||
2609 | VK_RValue, SourceLocation()); | ||||||||||||
2610 | return STCE; | ||||||||||||
2611 | } | ||||||||||||
2612 | |||||||||||||
2613 | Stmt *RewriteObjC::SynthMessageExpr(ObjCMessageExpr *Exp, | ||||||||||||
2614 | SourceLocation StartLoc, | ||||||||||||
2615 | SourceLocation EndLoc) { | ||||||||||||
2616 | if (!SelGetUidFunctionDecl) | ||||||||||||
2617 | SynthSelGetUidFunctionDecl(); | ||||||||||||
2618 | if (!MsgSendFunctionDecl) | ||||||||||||
2619 | SynthMsgSendFunctionDecl(); | ||||||||||||
2620 | if (!MsgSendSuperFunctionDecl) | ||||||||||||
2621 | SynthMsgSendSuperFunctionDecl(); | ||||||||||||
2622 | if (!MsgSendStretFunctionDecl) | ||||||||||||
2623 | SynthMsgSendStretFunctionDecl(); | ||||||||||||
2624 | if (!MsgSendSuperStretFunctionDecl) | ||||||||||||
2625 | SynthMsgSendSuperStretFunctionDecl(); | ||||||||||||
2626 | if (!MsgSendFpretFunctionDecl) | ||||||||||||
2627 | SynthMsgSendFpretFunctionDecl(); | ||||||||||||
2628 | if (!GetClassFunctionDecl) | ||||||||||||
2629 | SynthGetClassFunctionDecl(); | ||||||||||||
2630 | if (!GetSuperClassFunctionDecl) | ||||||||||||
2631 | SynthGetSuperClassFunctionDecl(); | ||||||||||||
2632 | if (!GetMetaClassFunctionDecl) | ||||||||||||
2633 | SynthGetMetaClassFunctionDecl(); | ||||||||||||
2634 | |||||||||||||
2635 | // default to objc_msgSend(). | ||||||||||||
2636 | FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl; | ||||||||||||
2637 | // May need to use objc_msgSend_stret() as well. | ||||||||||||
2638 | FunctionDecl *MsgSendStretFlavor = nullptr; | ||||||||||||
2639 | if (ObjCMethodDecl *mDecl = Exp->getMethodDecl()) { | ||||||||||||
2640 | QualType resultType = mDecl->getReturnType(); | ||||||||||||
2641 | if (resultType->isRecordType()) | ||||||||||||
2642 | MsgSendStretFlavor = MsgSendStretFunctionDecl; | ||||||||||||
2643 | else if (resultType->isRealFloatingType()) | ||||||||||||
2644 | MsgSendFlavor = MsgSendFpretFunctionDecl; | ||||||||||||
2645 | } | ||||||||||||
2646 | |||||||||||||
2647 | // Synthesize a call to objc_msgSend(). | ||||||||||||
2648 | SmallVector<Expr*, 8> MsgExprs; | ||||||||||||
2649 | switch (Exp->getReceiverKind()) { | ||||||||||||
2650 | case ObjCMessageExpr::SuperClass: { | ||||||||||||
2651 | MsgSendFlavor = MsgSendSuperFunctionDecl; | ||||||||||||
2652 | if (MsgSendStretFlavor) | ||||||||||||
2653 | MsgSendStretFlavor = MsgSendSuperStretFunctionDecl; | ||||||||||||
2654 | assert(MsgSendFlavor && "MsgSendFlavor is NULL!")((MsgSendFlavor && "MsgSendFlavor is NULL!") ? static_cast <void> (0) : __assert_fail ("MsgSendFlavor && \"MsgSendFlavor is NULL!\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2654, __PRETTY_FUNCTION__)); | ||||||||||||
2655 | |||||||||||||
2656 | ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface(); | ||||||||||||
2657 | |||||||||||||
2658 | SmallVector<Expr*, 4> InitExprs; | ||||||||||||
2659 | |||||||||||||
2660 | // set the receiver to self, the first argument to all methods. | ||||||||||||
2661 | InitExprs.push_back( | ||||||||||||
2662 | NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(), | ||||||||||||
2663 | CK_BitCast, | ||||||||||||
2664 | new (Context) DeclRefExpr(*Context, | ||||||||||||
2665 | CurMethodDef->getSelfDecl(), | ||||||||||||
2666 | false, | ||||||||||||
2667 | Context->getObjCIdType(), | ||||||||||||
2668 | VK_RValue, | ||||||||||||
2669 | SourceLocation())) | ||||||||||||
2670 | ); // set the 'receiver'. | ||||||||||||
2671 | |||||||||||||
2672 | // (id)class_getSuperclass((Class)objc_getClass("CurrentClass")) | ||||||||||||
2673 | SmallVector<Expr*, 8> ClsExprs; | ||||||||||||
2674 | ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName())); | ||||||||||||
2675 | CallExpr *Cls = SynthesizeCallToFunctionDecl(GetMetaClassFunctionDecl, | ||||||||||||
2676 | ClsExprs, StartLoc, EndLoc); | ||||||||||||
2677 | // (Class)objc_getClass("CurrentClass") | ||||||||||||
2678 | CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context, | ||||||||||||
2679 | Context->getObjCClassType(), | ||||||||||||
2680 | CK_BitCast, Cls); | ||||||||||||
2681 | ClsExprs.clear(); | ||||||||||||
2682 | ClsExprs.push_back(ArgExpr); | ||||||||||||
2683 | Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl, ClsExprs, | ||||||||||||
2684 | StartLoc, EndLoc); | ||||||||||||
2685 | // (id)class_getSuperclass((Class)objc_getClass("CurrentClass")) | ||||||||||||
2686 | // To turn off a warning, type-cast to 'id' | ||||||||||||
2687 | InitExprs.push_back( // set 'super class', using class_getSuperclass(). | ||||||||||||
2688 | NoTypeInfoCStyleCastExpr(Context, | ||||||||||||
2689 | Context->getObjCIdType(), | ||||||||||||
2690 | CK_BitCast, Cls)); | ||||||||||||
2691 | // struct objc_super | ||||||||||||
2692 | QualType superType = getSuperStructType(); | ||||||||||||
2693 | Expr *SuperRep; | ||||||||||||
2694 | |||||||||||||
2695 | if (LangOpts.MicrosoftExt) { | ||||||||||||
2696 | SynthSuperConstructorFunctionDecl(); | ||||||||||||
2697 | // Simulate a constructor call... | ||||||||||||
2698 | DeclRefExpr *DRE = new (Context) | ||||||||||||
2699 | DeclRefExpr(*Context, SuperConstructorFunctionDecl, false, superType, | ||||||||||||
2700 | VK_LValue, SourceLocation()); | ||||||||||||
2701 | SuperRep = CallExpr::Create(*Context, DRE, InitExprs, superType, | ||||||||||||
2702 | VK_LValue, SourceLocation()); | ||||||||||||
2703 | // The code for super is a little tricky to prevent collision with | ||||||||||||
2704 | // the structure definition in the header. The rewriter has it's own | ||||||||||||
2705 | // internal definition (__rw_objc_super) that is uses. This is why | ||||||||||||
2706 | // we need the cast below. For example: | ||||||||||||
2707 | // (struct objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER")) | ||||||||||||
2708 | // | ||||||||||||
2709 | SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf, | ||||||||||||
2710 | Context->getPointerType(SuperRep->getType()), | ||||||||||||
2711 | VK_RValue, OK_Ordinary, | ||||||||||||
2712 | SourceLocation(), false); | ||||||||||||
2713 | SuperRep = NoTypeInfoCStyleCastExpr(Context, | ||||||||||||
2714 | Context->getPointerType(superType), | ||||||||||||
2715 | CK_BitCast, SuperRep); | ||||||||||||
2716 | } else { | ||||||||||||
2717 | // (struct objc_super) { <exprs from above> } | ||||||||||||
2718 | InitListExpr *ILE = | ||||||||||||
2719 | new (Context) InitListExpr(*Context, SourceLocation(), InitExprs, | ||||||||||||
2720 | SourceLocation()); | ||||||||||||
2721 | TypeSourceInfo *superTInfo | ||||||||||||
2722 | = Context->getTrivialTypeSourceInfo(superType); | ||||||||||||
2723 | SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo, | ||||||||||||
2724 | superType, VK_LValue, | ||||||||||||
2725 | ILE, false); | ||||||||||||
2726 | // struct objc_super * | ||||||||||||
2727 | SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf, | ||||||||||||
2728 | Context->getPointerType(SuperRep->getType()), | ||||||||||||
2729 | VK_RValue, OK_Ordinary, | ||||||||||||
2730 | SourceLocation(), false); | ||||||||||||
2731 | } | ||||||||||||
2732 | MsgExprs.push_back(SuperRep); | ||||||||||||
2733 | break; | ||||||||||||
2734 | } | ||||||||||||
2735 | |||||||||||||
2736 | case ObjCMessageExpr::Class: { | ||||||||||||
2737 | SmallVector<Expr*, 8> ClsExprs; | ||||||||||||
2738 | ObjCInterfaceDecl *Class | ||||||||||||
2739 | = Exp->getClassReceiver()->getAs<ObjCObjectType>()->getInterface(); | ||||||||||||
2740 | IdentifierInfo *clsName = Class->getIdentifier(); | ||||||||||||
2741 | ClsExprs.push_back(getStringLiteral(clsName->getName())); | ||||||||||||
2742 | CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs, | ||||||||||||
2743 | StartLoc, EndLoc); | ||||||||||||
2744 | MsgExprs.push_back(Cls); | ||||||||||||
2745 | break; | ||||||||||||
2746 | } | ||||||||||||
2747 | |||||||||||||
2748 | case ObjCMessageExpr::SuperInstance:{ | ||||||||||||
2749 | MsgSendFlavor = MsgSendSuperFunctionDecl; | ||||||||||||
2750 | if (MsgSendStretFlavor) | ||||||||||||
2751 | MsgSendStretFlavor = MsgSendSuperStretFunctionDecl; | ||||||||||||
2752 | assert(MsgSendFlavor && "MsgSendFlavor is NULL!")((MsgSendFlavor && "MsgSendFlavor is NULL!") ? static_cast <void> (0) : __assert_fail ("MsgSendFlavor && \"MsgSendFlavor is NULL!\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 2752, __PRETTY_FUNCTION__)); | ||||||||||||
2753 | ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface(); | ||||||||||||
2754 | SmallVector<Expr*, 4> InitExprs; | ||||||||||||
2755 | |||||||||||||
2756 | InitExprs.push_back( | ||||||||||||
2757 | NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(), | ||||||||||||
2758 | CK_BitCast, | ||||||||||||
2759 | new (Context) DeclRefExpr(*Context, | ||||||||||||
2760 | CurMethodDef->getSelfDecl(), | ||||||||||||
2761 | false, | ||||||||||||
2762 | Context->getObjCIdType(), | ||||||||||||
2763 | VK_RValue, SourceLocation())) | ||||||||||||
2764 | ); // set the 'receiver'. | ||||||||||||
2765 | |||||||||||||
2766 | // (id)class_getSuperclass((Class)objc_getClass("CurrentClass")) | ||||||||||||
2767 | SmallVector<Expr*, 8> ClsExprs; | ||||||||||||
2768 | ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName())); | ||||||||||||
2769 | CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs, | ||||||||||||
2770 | StartLoc, EndLoc); | ||||||||||||
2771 | // (Class)objc_getClass("CurrentClass") | ||||||||||||
2772 | CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context, | ||||||||||||
2773 | Context->getObjCClassType(), | ||||||||||||
2774 | CK_BitCast, Cls); | ||||||||||||
2775 | ClsExprs.clear(); | ||||||||||||
2776 | ClsExprs.push_back(ArgExpr); | ||||||||||||
2777 | Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl, ClsExprs, | ||||||||||||
2778 | StartLoc, EndLoc); | ||||||||||||
2779 | |||||||||||||
2780 | // (id)class_getSuperclass((Class)objc_getClass("CurrentClass")) | ||||||||||||
2781 | // To turn off a warning, type-cast to 'id' | ||||||||||||
2782 | InitExprs.push_back( | ||||||||||||
2783 | // set 'super class', using class_getSuperclass(). | ||||||||||||
2784 | NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(), | ||||||||||||
2785 | CK_BitCast, Cls)); | ||||||||||||
2786 | // struct objc_super | ||||||||||||
2787 | QualType superType = getSuperStructType(); | ||||||||||||
2788 | Expr *SuperRep; | ||||||||||||
2789 | |||||||||||||
2790 | if (LangOpts.MicrosoftExt) { | ||||||||||||
2791 | SynthSuperConstructorFunctionDecl(); | ||||||||||||
2792 | // Simulate a constructor call... | ||||||||||||
2793 | DeclRefExpr *DRE = new (Context) | ||||||||||||
2794 | DeclRefExpr(*Context, SuperConstructorFunctionDecl, false, superType, | ||||||||||||
2795 | VK_LValue, SourceLocation()); | ||||||||||||
2796 | SuperRep = CallExpr::Create(*Context, DRE, InitExprs, superType, | ||||||||||||
2797 | VK_LValue, SourceLocation()); | ||||||||||||
2798 | // The code for super is a little tricky to prevent collision with | ||||||||||||
2799 | // the structure definition in the header. The rewriter has it's own | ||||||||||||
2800 | // internal definition (__rw_objc_super) that is uses. This is why | ||||||||||||
2801 | // we need the cast below. For example: | ||||||||||||
2802 | // (struct objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER")) | ||||||||||||
2803 | // | ||||||||||||
2804 | SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf, | ||||||||||||
2805 | Context->getPointerType(SuperRep->getType()), | ||||||||||||
2806 | VK_RValue, OK_Ordinary, | ||||||||||||
2807 | SourceLocation(), false); | ||||||||||||
2808 | SuperRep = NoTypeInfoCStyleCastExpr(Context, | ||||||||||||
2809 | Context->getPointerType(superType), | ||||||||||||
2810 | CK_BitCast, SuperRep); | ||||||||||||
2811 | } else { | ||||||||||||
2812 | // (struct objc_super) { <exprs from above> } | ||||||||||||
2813 | InitListExpr *ILE = | ||||||||||||
2814 | new (Context) InitListExpr(*Context, SourceLocation(), InitExprs, | ||||||||||||
2815 | SourceLocation()); | ||||||||||||
2816 | TypeSourceInfo *superTInfo | ||||||||||||
2817 | = Context->getTrivialTypeSourceInfo(superType); | ||||||||||||
2818 | SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo, | ||||||||||||
2819 | superType, VK_RValue, ILE, | ||||||||||||
2820 | false); | ||||||||||||
2821 | } | ||||||||||||
2822 | MsgExprs.push_back(SuperRep); | ||||||||||||
2823 | break; | ||||||||||||
2824 | } | ||||||||||||
2825 | |||||||||||||
2826 | case ObjCMessageExpr::Instance: { | ||||||||||||
2827 | // Remove all type-casts because it may contain objc-style types; e.g. | ||||||||||||
2828 | // Foo<Proto> *. | ||||||||||||
2829 | Expr *recExpr = Exp->getInstanceReceiver(); | ||||||||||||
2830 | while (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(recExpr)) | ||||||||||||
2831 | recExpr = CE->getSubExpr(); | ||||||||||||
2832 | CastKind CK = recExpr->getType()->isObjCObjectPointerType() | ||||||||||||
2833 | ? CK_BitCast : recExpr->getType()->isBlockPointerType() | ||||||||||||
2834 | ? CK_BlockPointerToObjCPointerCast | ||||||||||||
2835 | : CK_CPointerToObjCPointerCast; | ||||||||||||
2836 | |||||||||||||
2837 | recExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(), | ||||||||||||
2838 | CK, recExpr); | ||||||||||||
2839 | MsgExprs.push_back(recExpr); | ||||||||||||
2840 | break; | ||||||||||||
2841 | } | ||||||||||||
2842 | } | ||||||||||||
2843 | |||||||||||||
2844 | // Create a call to sel_registerName("selName"), it will be the 2nd argument. | ||||||||||||
2845 | SmallVector<Expr*, 8> SelExprs; | ||||||||||||
2846 | SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString())); | ||||||||||||
2847 | CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl, | ||||||||||||
2848 | SelExprs, StartLoc, EndLoc); | ||||||||||||
2849 | MsgExprs.push_back(SelExp); | ||||||||||||
2850 | |||||||||||||
2851 | // Now push any user supplied arguments. | ||||||||||||
2852 | for (unsigned i = 0; i < Exp->getNumArgs(); i++) { | ||||||||||||
2853 | Expr *userExpr = Exp->getArg(i); | ||||||||||||
2854 | // Make all implicit casts explicit...ICE comes in handy:-) | ||||||||||||
2855 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) { | ||||||||||||
2856 | // Reuse the ICE type, it is exactly what the doctor ordered. | ||||||||||||
2857 | QualType type = ICE->getType(); | ||||||||||||
2858 | if (needToScanForQualifiers(type)) | ||||||||||||
2859 | type = Context->getObjCIdType(); | ||||||||||||
2860 | // Make sure we convert "type (^)(...)" to "type (*)(...)". | ||||||||||||
2861 | (void)convertBlockPointerToFunctionPointer(type); | ||||||||||||
2862 | const Expr *SubExpr = ICE->IgnoreParenImpCasts(); | ||||||||||||
2863 | CastKind CK; | ||||||||||||
2864 | if (SubExpr->getType()->isIntegralType(*Context) && | ||||||||||||
2865 | type->isBooleanType()) { | ||||||||||||
2866 | CK = CK_IntegralToBoolean; | ||||||||||||
2867 | } else if (type->isObjCObjectPointerType()) { | ||||||||||||
2868 | if (SubExpr->getType()->isBlockPointerType()) { | ||||||||||||
2869 | CK = CK_BlockPointerToObjCPointerCast; | ||||||||||||
2870 | } else if (SubExpr->getType()->isPointerType()) { | ||||||||||||
2871 | CK = CK_CPointerToObjCPointerCast; | ||||||||||||
2872 | } else { | ||||||||||||
2873 | CK = CK_BitCast; | ||||||||||||
2874 | } | ||||||||||||
2875 | } else { | ||||||||||||
2876 | CK = CK_BitCast; | ||||||||||||
2877 | } | ||||||||||||
2878 | |||||||||||||
2879 | userExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, userExpr); | ||||||||||||
2880 | } | ||||||||||||
2881 | // Make id<P...> cast into an 'id' cast. | ||||||||||||
2882 | else if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(userExpr)) { | ||||||||||||
2883 | if (CE->getType()->isObjCQualifiedIdType()) { | ||||||||||||
2884 | while ((CE = dyn_cast<CStyleCastExpr>(userExpr))) | ||||||||||||
2885 | userExpr = CE->getSubExpr(); | ||||||||||||
2886 | CastKind CK; | ||||||||||||
2887 | if (userExpr->getType()->isIntegralType(*Context)) { | ||||||||||||
2888 | CK = CK_IntegralToPointer; | ||||||||||||
2889 | } else if (userExpr->getType()->isBlockPointerType()) { | ||||||||||||
2890 | CK = CK_BlockPointerToObjCPointerCast; | ||||||||||||
2891 | } else if (userExpr->getType()->isPointerType()) { | ||||||||||||
2892 | CK = CK_CPointerToObjCPointerCast; | ||||||||||||
2893 | } else { | ||||||||||||
2894 | CK = CK_BitCast; | ||||||||||||
2895 | } | ||||||||||||
2896 | userExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(), | ||||||||||||
2897 | CK, userExpr); | ||||||||||||
2898 | } | ||||||||||||
2899 | } | ||||||||||||
2900 | MsgExprs.push_back(userExpr); | ||||||||||||
2901 | // We've transferred the ownership to MsgExprs. For now, we *don't* null | ||||||||||||
2902 | // out the argument in the original expression (since we aren't deleting | ||||||||||||
2903 | // the ObjCMessageExpr). See RewritePropertyOrImplicitSetter() usage for more info. | ||||||||||||
2904 | //Exp->setArg(i, 0); | ||||||||||||
2905 | } | ||||||||||||
2906 | // Generate the funky cast. | ||||||||||||
2907 | CastExpr *cast; | ||||||||||||
2908 | SmallVector<QualType, 8> ArgTypes; | ||||||||||||
2909 | QualType returnType; | ||||||||||||
2910 | |||||||||||||
2911 | // Push 'id' and 'SEL', the 2 implicit arguments. | ||||||||||||
2912 | if (MsgSendFlavor == MsgSendSuperFunctionDecl) | ||||||||||||
2913 | ArgTypes.push_back(Context->getPointerType(getSuperStructType())); | ||||||||||||
2914 | else | ||||||||||||
2915 | ArgTypes.push_back(Context->getObjCIdType()); | ||||||||||||
2916 | ArgTypes.push_back(Context->getObjCSelType()); | ||||||||||||
2917 | if (ObjCMethodDecl *OMD = Exp->getMethodDecl()) { | ||||||||||||
2918 | // Push any user argument types. | ||||||||||||
2919 | for (const auto *PI : OMD->parameters()) { | ||||||||||||
2920 | QualType t = PI->getType()->isObjCQualifiedIdType() | ||||||||||||
2921 | ? Context->getObjCIdType() | ||||||||||||
2922 | : PI->getType(); | ||||||||||||
2923 | // Make sure we convert "t (^)(...)" to "t (*)(...)". | ||||||||||||
2924 | (void)convertBlockPointerToFunctionPointer(t); | ||||||||||||
2925 | ArgTypes.push_back(t); | ||||||||||||
2926 | } | ||||||||||||
2927 | returnType = Exp->getType(); | ||||||||||||
2928 | convertToUnqualifiedObjCType(returnType); | ||||||||||||
2929 | (void)convertBlockPointerToFunctionPointer(returnType); | ||||||||||||
2930 | } else { | ||||||||||||
2931 | returnType = Context->getObjCIdType(); | ||||||||||||
2932 | } | ||||||||||||
2933 | // Get the type, we will need to reference it in a couple spots. | ||||||||||||
2934 | QualType msgSendType = MsgSendFlavor->getType(); | ||||||||||||
2935 | |||||||||||||
2936 | // Create a reference to the objc_msgSend() declaration. | ||||||||||||
2937 | DeclRefExpr *DRE = new (Context) DeclRefExpr( | ||||||||||||
2938 | *Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation()); | ||||||||||||
2939 | |||||||||||||
2940 | // Need to cast objc_msgSend to "void *" (to workaround a GCC bandaid). | ||||||||||||
2941 | // If we don't do this cast, we get the following bizarre warning/note: | ||||||||||||
2942 | // xx.m:13: warning: function called through a non-compatible type | ||||||||||||
2943 | // xx.m:13: note: if this code is reached, the program will abort | ||||||||||||
2944 | cast = NoTypeInfoCStyleCastExpr(Context, | ||||||||||||
2945 | Context->getPointerType(Context->VoidTy), | ||||||||||||
2946 | CK_BitCast, DRE); | ||||||||||||
2947 | |||||||||||||
2948 | // Now do the "normal" pointer to function cast. | ||||||||||||
2949 | // If we don't have a method decl, force a variadic cast. | ||||||||||||
2950 | const ObjCMethodDecl *MD = Exp->getMethodDecl(); | ||||||||||||
2951 | QualType castType = | ||||||||||||
2952 | getSimpleFunctionType(returnType, ArgTypes, MD ? MD->isVariadic() : true); | ||||||||||||
2953 | castType = Context->getPointerType(castType); | ||||||||||||
2954 | cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast, | ||||||||||||
2955 | cast); | ||||||||||||
2956 | |||||||||||||
2957 | // Don't forget the parens to enforce the proper binding. | ||||||||||||
2958 | ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast); | ||||||||||||
2959 | |||||||||||||
2960 | const FunctionType *FT = msgSendType->getAs<FunctionType>(); | ||||||||||||
2961 | CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(), | ||||||||||||
2962 | VK_RValue, EndLoc); | ||||||||||||
2963 | Stmt *ReplacingStmt = CE; | ||||||||||||
2964 | if (MsgSendStretFlavor) { | ||||||||||||
2965 | // We have the method which returns a struct/union. Must also generate | ||||||||||||
2966 | // call to objc_msgSend_stret and hang both varieties on a conditional | ||||||||||||
2967 | // expression which dictate which one to envoke depending on size of | ||||||||||||
2968 | // method's return type. | ||||||||||||
2969 | |||||||||||||
2970 | CallExpr *STCE = SynthMsgSendStretCallExpr(MsgSendStretFlavor, | ||||||||||||
2971 | msgSendType, returnType, | ||||||||||||
2972 | ArgTypes, MsgExprs, | ||||||||||||
2973 | Exp->getMethodDecl()); | ||||||||||||
2974 | |||||||||||||
2975 | // Build sizeof(returnType) | ||||||||||||
2976 | UnaryExprOrTypeTraitExpr *sizeofExpr = | ||||||||||||
2977 | new (Context) UnaryExprOrTypeTraitExpr(UETT_SizeOf, | ||||||||||||
2978 | Context->getTrivialTypeSourceInfo(returnType), | ||||||||||||
2979 | Context->getSizeType(), SourceLocation(), | ||||||||||||
2980 | SourceLocation()); | ||||||||||||
2981 | // (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...)) | ||||||||||||
2982 | // FIXME: Value of 8 is base on ppc32/x86 ABI for the most common cases. | ||||||||||||
2983 | // For X86 it is more complicated and some kind of target specific routine | ||||||||||||
2984 | // is needed to decide what to do. | ||||||||||||
2985 | unsigned IntSize = | ||||||||||||
2986 | static_cast<unsigned>(Context->getTypeSize(Context->IntTy)); | ||||||||||||
2987 | IntegerLiteral *limit = IntegerLiteral::Create(*Context, | ||||||||||||
2988 | llvm::APInt(IntSize, 8), | ||||||||||||
2989 | Context->IntTy, | ||||||||||||
2990 | SourceLocation()); | ||||||||||||
2991 | BinaryOperator *lessThanExpr = | ||||||||||||
2992 | new (Context) BinaryOperator(sizeofExpr, limit, BO_LE, Context->IntTy, | ||||||||||||
2993 | VK_RValue, OK_Ordinary, SourceLocation(), | ||||||||||||
2994 | FPOptions()); | ||||||||||||
2995 | // (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...)) | ||||||||||||
2996 | ConditionalOperator *CondExpr = | ||||||||||||
2997 | new (Context) ConditionalOperator(lessThanExpr, | ||||||||||||
2998 | SourceLocation(), CE, | ||||||||||||
2999 | SourceLocation(), STCE, | ||||||||||||
3000 | returnType, VK_RValue, OK_Ordinary); | ||||||||||||
3001 | ReplacingStmt = new (Context) ParenExpr(SourceLocation(), SourceLocation(), | ||||||||||||
3002 | CondExpr); | ||||||||||||
3003 | } | ||||||||||||
3004 | // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info. | ||||||||||||
3005 | return ReplacingStmt; | ||||||||||||
3006 | } | ||||||||||||
3007 | |||||||||||||
3008 | Stmt *RewriteObjC::RewriteMessageExpr(ObjCMessageExpr *Exp) { | ||||||||||||
3009 | Stmt *ReplacingStmt = | ||||||||||||
3010 | SynthMessageExpr(Exp, Exp->getBeginLoc(), Exp->getEndLoc()); | ||||||||||||
3011 | |||||||||||||
3012 | // Now do the actual rewrite. | ||||||||||||
3013 | ReplaceStmt(Exp, ReplacingStmt); | ||||||||||||
3014 | |||||||||||||
3015 | // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info. | ||||||||||||
3016 | return ReplacingStmt; | ||||||||||||
3017 | } | ||||||||||||
3018 | |||||||||||||
3019 | // typedef struct objc_object Protocol; | ||||||||||||
3020 | QualType RewriteObjC::getProtocolType() { | ||||||||||||
3021 | if (!ProtocolTypeDecl) { | ||||||||||||
3022 | TypeSourceInfo *TInfo | ||||||||||||
3023 | = Context->getTrivialTypeSourceInfo(Context->getObjCIdType()); | ||||||||||||
3024 | ProtocolTypeDecl = TypedefDecl::Create(*Context, TUDecl, | ||||||||||||
3025 | SourceLocation(), SourceLocation(), | ||||||||||||
3026 | &Context->Idents.get("Protocol"), | ||||||||||||
3027 | TInfo); | ||||||||||||
3028 | } | ||||||||||||
3029 | return Context->getTypeDeclType(ProtocolTypeDecl); | ||||||||||||
3030 | } | ||||||||||||
3031 | |||||||||||||
3032 | /// RewriteObjCProtocolExpr - Rewrite a protocol expression into | ||||||||||||
3033 | /// a synthesized/forward data reference (to the protocol's metadata). | ||||||||||||
3034 | /// The forward references (and metadata) are generated in | ||||||||||||
3035 | /// RewriteObjC::HandleTranslationUnit(). | ||||||||||||
3036 | Stmt *RewriteObjC::RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp) { | ||||||||||||
3037 | std::string Name = "_OBJC_PROTOCOL_" + Exp->getProtocol()->getNameAsString(); | ||||||||||||
3038 | IdentifierInfo *ID = &Context->Idents.get(Name); | ||||||||||||
3039 | VarDecl *VD = VarDecl::Create(*Context, TUDecl, SourceLocation(), | ||||||||||||
3040 | SourceLocation(), ID, getProtocolType(), | ||||||||||||
3041 | nullptr, SC_Extern); | ||||||||||||
3042 | DeclRefExpr *DRE = new (Context) DeclRefExpr( | ||||||||||||
3043 | *Context, VD, false, getProtocolType(), VK_LValue, SourceLocation()); | ||||||||||||
3044 | Expr *DerefExpr = new (Context) UnaryOperator(DRE, UO_AddrOf, | ||||||||||||
3045 | Context->getPointerType(DRE->getType()), | ||||||||||||
3046 | VK_RValue, OK_Ordinary, SourceLocation(), false); | ||||||||||||
3047 | CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, DerefExpr->getType(), | ||||||||||||
3048 | CK_BitCast, | ||||||||||||
3049 | DerefExpr); | ||||||||||||
3050 | ReplaceStmt(Exp, castExpr); | ||||||||||||
3051 | ProtocolExprDecls.insert(Exp->getProtocol()->getCanonicalDecl()); | ||||||||||||
3052 | // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info. | ||||||||||||
3053 | return castExpr; | ||||||||||||
3054 | } | ||||||||||||
3055 | |||||||||||||
3056 | bool RewriteObjC::BufferContainsPPDirectives(const char *startBuf, | ||||||||||||
3057 | const char *endBuf) { | ||||||||||||
3058 | while (startBuf < endBuf) { | ||||||||||||
3059 | if (*startBuf == '#') { | ||||||||||||
3060 | // Skip whitespace. | ||||||||||||
3061 | for (++startBuf; startBuf[0] == ' ' || startBuf[0] == '\t'; ++startBuf) | ||||||||||||
3062 | ; | ||||||||||||
3063 | if (!strncmp(startBuf, "if", strlen("if")) || | ||||||||||||
3064 | !strncmp(startBuf, "ifdef", strlen("ifdef")) || | ||||||||||||
3065 | !strncmp(startBuf, "ifndef", strlen("ifndef")) || | ||||||||||||
3066 | !strncmp(startBuf, "define", strlen("define")) || | ||||||||||||
3067 | !strncmp(startBuf, "undef", strlen("undef")) || | ||||||||||||
3068 | !strncmp(startBuf, "else", strlen("else")) || | ||||||||||||
3069 | !strncmp(startBuf, "elif", strlen("elif")) || | ||||||||||||
3070 | !strncmp(startBuf, "endif", strlen("endif")) || | ||||||||||||
3071 | !strncmp(startBuf, "pragma", strlen("pragma")) || | ||||||||||||
3072 | !strncmp(startBuf, "include", strlen("include")) || | ||||||||||||
3073 | !strncmp(startBuf, "import", strlen("import")) || | ||||||||||||
3074 | !strncmp(startBuf, "include_next", strlen("include_next"))) | ||||||||||||
3075 | return true; | ||||||||||||
3076 | } | ||||||||||||
3077 | startBuf++; | ||||||||||||
3078 | } | ||||||||||||
3079 | return false; | ||||||||||||
3080 | } | ||||||||||||
3081 | |||||||||||||
3082 | /// RewriteObjCInternalStruct - Rewrite one internal struct corresponding to | ||||||||||||
3083 | /// an objective-c class with ivars. | ||||||||||||
3084 | void RewriteObjC::RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl, | ||||||||||||
3085 | std::string &Result) { | ||||||||||||
3086 | assert(CDecl && "Class missing in SynthesizeObjCInternalStruct")((CDecl && "Class missing in SynthesizeObjCInternalStruct" ) ? static_cast<void> (0) : __assert_fail ("CDecl && \"Class missing in SynthesizeObjCInternalStruct\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3086, __PRETTY_FUNCTION__)); | ||||||||||||
3087 | assert(CDecl->getName() != "" &&((CDecl->getName() != "" && "Name missing in SynthesizeObjCInternalStruct" ) ? static_cast<void> (0) : __assert_fail ("CDecl->getName() != \"\" && \"Name missing in SynthesizeObjCInternalStruct\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3088, __PRETTY_FUNCTION__)) | ||||||||||||
3088 | "Name missing in SynthesizeObjCInternalStruct")((CDecl->getName() != "" && "Name missing in SynthesizeObjCInternalStruct" ) ? static_cast<void> (0) : __assert_fail ("CDecl->getName() != \"\" && \"Name missing in SynthesizeObjCInternalStruct\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3088, __PRETTY_FUNCTION__)); | ||||||||||||
3089 | // Do not synthesize more than once. | ||||||||||||
3090 | if (ObjCSynthesizedStructs.count(CDecl)) | ||||||||||||
3091 | return; | ||||||||||||
3092 | ObjCInterfaceDecl *RCDecl = CDecl->getSuperClass(); | ||||||||||||
3093 | int NumIvars = CDecl->ivar_size(); | ||||||||||||
3094 | SourceLocation LocStart = CDecl->getBeginLoc(); | ||||||||||||
3095 | SourceLocation LocEnd = CDecl->getEndOfDefinitionLoc(); | ||||||||||||
3096 | |||||||||||||
3097 | const char *startBuf = SM->getCharacterData(LocStart); | ||||||||||||
3098 | const char *endBuf = SM->getCharacterData(LocEnd); | ||||||||||||
3099 | |||||||||||||
3100 | // If no ivars and no root or if its root, directly or indirectly, | ||||||||||||
3101 | // have no ivars (thus not synthesized) then no need to synthesize this class. | ||||||||||||
3102 | if ((!CDecl->isThisDeclarationADefinition() || NumIvars == 0) && | ||||||||||||
3103 | (!RCDecl || !ObjCSynthesizedStructs.count(RCDecl))) { | ||||||||||||
3104 | endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts); | ||||||||||||
3105 | ReplaceText(LocStart, endBuf-startBuf, Result); | ||||||||||||
3106 | return; | ||||||||||||
3107 | } | ||||||||||||
3108 | |||||||||||||
3109 | // FIXME: This has potential of causing problem. If | ||||||||||||
3110 | // SynthesizeObjCInternalStruct is ever called recursively. | ||||||||||||
3111 | Result += "\nstruct "; | ||||||||||||
3112 | Result += CDecl->getNameAsString(); | ||||||||||||
3113 | if (LangOpts.MicrosoftExt) | ||||||||||||
3114 | Result += "_IMPL"; | ||||||||||||
3115 | |||||||||||||
3116 | if (NumIvars > 0) { | ||||||||||||
3117 | const char *cursor = strchr(startBuf, '{'); | ||||||||||||
3118 | assert((cursor && endBuf)(((cursor && endBuf) && "SynthesizeObjCInternalStruct - malformed @interface" ) ? static_cast<void> (0) : __assert_fail ("(cursor && endBuf) && \"SynthesizeObjCInternalStruct - malformed @interface\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3119, __PRETTY_FUNCTION__)) | ||||||||||||
3119 | && "SynthesizeObjCInternalStruct - malformed @interface")(((cursor && endBuf) && "SynthesizeObjCInternalStruct - malformed @interface" ) ? static_cast<void> (0) : __assert_fail ("(cursor && endBuf) && \"SynthesizeObjCInternalStruct - malformed @interface\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3119, __PRETTY_FUNCTION__)); | ||||||||||||
3120 | // If the buffer contains preprocessor directives, we do more fine-grained | ||||||||||||
3121 | // rewrites. This is intended to fix code that looks like (which occurs in | ||||||||||||
3122 | // NSURL.h, for example): | ||||||||||||
3123 | // | ||||||||||||
3124 | // #ifdef XYZ | ||||||||||||
3125 | // @interface Foo : NSObject | ||||||||||||
3126 | // #else | ||||||||||||
3127 | // @interface FooBar : NSObject | ||||||||||||
3128 | // #endif | ||||||||||||
3129 | // { | ||||||||||||
3130 | // int i; | ||||||||||||
3131 | // } | ||||||||||||
3132 | // @end | ||||||||||||
3133 | // | ||||||||||||
3134 | // This clause is segregated to avoid breaking the common case. | ||||||||||||
3135 | if (BufferContainsPPDirectives(startBuf, cursor)) { | ||||||||||||
3136 | SourceLocation L = RCDecl ? CDecl->getSuperClassLoc() : | ||||||||||||
3137 | CDecl->getAtStartLoc(); | ||||||||||||
3138 | const char *endHeader = SM->getCharacterData(L); | ||||||||||||
3139 | endHeader += Lexer::MeasureTokenLength(L, *SM, LangOpts); | ||||||||||||
3140 | |||||||||||||
3141 | if (CDecl->protocol_begin() != CDecl->protocol_end()) { | ||||||||||||
3142 | // advance to the end of the referenced protocols. | ||||||||||||
3143 | while (endHeader < cursor && *endHeader != '>') endHeader++; | ||||||||||||
3144 | endHeader++; | ||||||||||||
3145 | } | ||||||||||||
3146 | // rewrite the original header | ||||||||||||
3147 | ReplaceText(LocStart, endHeader-startBuf, Result); | ||||||||||||
3148 | } else { | ||||||||||||
3149 | // rewrite the original header *without* disturbing the '{' | ||||||||||||
3150 | ReplaceText(LocStart, cursor-startBuf, Result); | ||||||||||||
3151 | } | ||||||||||||
3152 | if (RCDecl && ObjCSynthesizedStructs.count(RCDecl)) { | ||||||||||||
3153 | Result = "\n struct "; | ||||||||||||
3154 | Result += RCDecl->getNameAsString(); | ||||||||||||
3155 | Result += "_IMPL "; | ||||||||||||
3156 | Result += RCDecl->getNameAsString(); | ||||||||||||
3157 | Result += "_IVARS;\n"; | ||||||||||||
3158 | |||||||||||||
3159 | // insert the super class structure definition. | ||||||||||||
3160 | SourceLocation OnePastCurly = | ||||||||||||
3161 | LocStart.getLocWithOffset(cursor-startBuf+1); | ||||||||||||
3162 | InsertText(OnePastCurly, Result); | ||||||||||||
3163 | } | ||||||||||||
3164 | cursor++; // past '{' | ||||||||||||
3165 | |||||||||||||
3166 | // Now comment out any visibility specifiers. | ||||||||||||
3167 | while (cursor < endBuf) { | ||||||||||||
3168 | if (*cursor == '@') { | ||||||||||||
3169 | SourceLocation atLoc = LocStart.getLocWithOffset(cursor-startBuf); | ||||||||||||
3170 | // Skip whitespace. | ||||||||||||
3171 | for (++cursor; cursor[0] == ' ' || cursor[0] == '\t'; ++cursor) | ||||||||||||
3172 | /*scan*/; | ||||||||||||
3173 | |||||||||||||
3174 | // FIXME: presence of @public, etc. inside comment results in | ||||||||||||
3175 | // this transformation as well, which is still correct c-code. | ||||||||||||
3176 | if (!strncmp(cursor, "public", strlen("public")) || | ||||||||||||
3177 | !strncmp(cursor, "private", strlen("private")) || | ||||||||||||
3178 | !strncmp(cursor, "package", strlen("package")) || | ||||||||||||
3179 | !strncmp(cursor, "protected", strlen("protected"))) | ||||||||||||
3180 | InsertText(atLoc, "// "); | ||||||||||||
3181 | } | ||||||||||||
3182 | // FIXME: If there are cases where '<' is used in ivar declaration part | ||||||||||||
3183 | // of user code, then scan the ivar list and use needToScanForQualifiers | ||||||||||||
3184 | // for type checking. | ||||||||||||
3185 | else if (*cursor == '<') { | ||||||||||||
3186 | SourceLocation atLoc = LocStart.getLocWithOffset(cursor-startBuf); | ||||||||||||
3187 | InsertText(atLoc, "/* "); | ||||||||||||
3188 | cursor = strchr(cursor, '>'); | ||||||||||||
3189 | cursor++; | ||||||||||||
3190 | atLoc = LocStart.getLocWithOffset(cursor-startBuf); | ||||||||||||
3191 | InsertText(atLoc, " */"); | ||||||||||||
3192 | } else if (*cursor == '^') { // rewrite block specifier. | ||||||||||||
3193 | SourceLocation caretLoc = LocStart.getLocWithOffset(cursor-startBuf); | ||||||||||||
3194 | ReplaceText(caretLoc, 1, "*"); | ||||||||||||
3195 | } | ||||||||||||
3196 | cursor++; | ||||||||||||
3197 | } | ||||||||||||
3198 | // Don't forget to add a ';'!! | ||||||||||||
3199 | InsertText(LocEnd.getLocWithOffset(1), ";"); | ||||||||||||
3200 | } else { // we don't have any instance variables - insert super struct. | ||||||||||||
3201 | endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts); | ||||||||||||
3202 | Result += " {\n struct "; | ||||||||||||
3203 | Result += RCDecl->getNameAsString(); | ||||||||||||
3204 | Result += "_IMPL "; | ||||||||||||
3205 | Result += RCDecl->getNameAsString(); | ||||||||||||
3206 | Result += "_IVARS;\n};\n"; | ||||||||||||
3207 | ReplaceText(LocStart, endBuf-startBuf, Result); | ||||||||||||
3208 | } | ||||||||||||
3209 | // Mark this struct as having been generated. | ||||||||||||
3210 | if (!ObjCSynthesizedStructs.insert(CDecl).second) | ||||||||||||
3211 | llvm_unreachable("struct already synthesize- SynthesizeObjCInternalStruct")::llvm::llvm_unreachable_internal("struct already synthesize- SynthesizeObjCInternalStruct" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3211); | ||||||||||||
3212 | } | ||||||||||||
3213 | |||||||||||||
3214 | //===----------------------------------------------------------------------===// | ||||||||||||
3215 | // Meta Data Emission | ||||||||||||
3216 | //===----------------------------------------------------------------------===// | ||||||||||||
3217 | |||||||||||||
3218 | /// RewriteImplementations - This routine rewrites all method implementations | ||||||||||||
3219 | /// and emits meta-data. | ||||||||||||
3220 | |||||||||||||
3221 | void RewriteObjC::RewriteImplementations() { | ||||||||||||
3222 | int ClsDefCount = ClassImplementation.size(); | ||||||||||||
3223 | int CatDefCount = CategoryImplementation.size(); | ||||||||||||
3224 | |||||||||||||
3225 | // Rewrite implemented methods | ||||||||||||
3226 | for (int i = 0; i < ClsDefCount; i++) | ||||||||||||
3227 | RewriteImplementationDecl(ClassImplementation[i]); | ||||||||||||
3228 | |||||||||||||
3229 | for (int i = 0; i < CatDefCount; i++) | ||||||||||||
3230 | RewriteImplementationDecl(CategoryImplementation[i]); | ||||||||||||
3231 | } | ||||||||||||
3232 | |||||||||||||
3233 | void RewriteObjC::RewriteByRefString(std::string &ResultStr, | ||||||||||||
3234 | const std::string &Name, | ||||||||||||
3235 | ValueDecl *VD, bool def) { | ||||||||||||
3236 | assert(BlockByRefDeclNo.count(VD) &&((BlockByRefDeclNo.count(VD) && "RewriteByRefString: ByRef decl missing" ) ? static_cast<void> (0) : __assert_fail ("BlockByRefDeclNo.count(VD) && \"RewriteByRefString: ByRef decl missing\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3237, __PRETTY_FUNCTION__)) | ||||||||||||
3237 | "RewriteByRefString: ByRef decl missing")((BlockByRefDeclNo.count(VD) && "RewriteByRefString: ByRef decl missing" ) ? static_cast<void> (0) : __assert_fail ("BlockByRefDeclNo.count(VD) && \"RewriteByRefString: ByRef decl missing\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3237, __PRETTY_FUNCTION__)); | ||||||||||||
3238 | if (def) | ||||||||||||
3239 | ResultStr += "struct "; | ||||||||||||
3240 | ResultStr += "__Block_byref_" + Name + | ||||||||||||
3241 | "_" + utostr(BlockByRefDeclNo[VD]) ; | ||||||||||||
3242 | } | ||||||||||||
3243 | |||||||||||||
3244 | static bool HasLocalVariableExternalStorage(ValueDecl *VD) { | ||||||||||||
3245 | if (VarDecl *Var = dyn_cast<VarDecl>(VD)) | ||||||||||||
3246 | return (Var->isFunctionOrMethodVarDecl() && !Var->hasLocalStorage()); | ||||||||||||
3247 | return false; | ||||||||||||
3248 | } | ||||||||||||
3249 | |||||||||||||
3250 | std::string RewriteObjC::SynthesizeBlockFunc(BlockExpr *CE, int i, | ||||||||||||
3251 | StringRef funcName, | ||||||||||||
3252 | std::string Tag) { | ||||||||||||
3253 | const FunctionType *AFT = CE->getFunctionType(); | ||||||||||||
3254 | QualType RT = AFT->getReturnType(); | ||||||||||||
3255 | std::string StructRef = "struct " + Tag; | ||||||||||||
3256 | std::string S = "static " + RT.getAsString(Context->getPrintingPolicy()) + " __" + | ||||||||||||
3257 | funcName.str() + "_" + "block_func_" + utostr(i); | ||||||||||||
3258 | |||||||||||||
3259 | BlockDecl *BD = CE->getBlockDecl(); | ||||||||||||
3260 | |||||||||||||
3261 | if (isa<FunctionNoProtoType>(AFT)) { | ||||||||||||
3262 | // No user-supplied arguments. Still need to pass in a pointer to the | ||||||||||||
3263 | // block (to reference imported block decl refs). | ||||||||||||
3264 | S += "(" + StructRef + " *__cself)"; | ||||||||||||
3265 | } else if (BD->param_empty()) { | ||||||||||||
3266 | S += "(" + StructRef + " *__cself)"; | ||||||||||||
3267 | } else { | ||||||||||||
3268 | const FunctionProtoType *FT = cast<FunctionProtoType>(AFT); | ||||||||||||
3269 | assert(FT && "SynthesizeBlockFunc: No function proto")((FT && "SynthesizeBlockFunc: No function proto") ? static_cast <void> (0) : __assert_fail ("FT && \"SynthesizeBlockFunc: No function proto\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3269, __PRETTY_FUNCTION__)); | ||||||||||||
3270 | S += '('; | ||||||||||||
3271 | // first add the implicit argument. | ||||||||||||
3272 | S += StructRef + " *__cself, "; | ||||||||||||
3273 | std::string ParamStr; | ||||||||||||
3274 | for (BlockDecl::param_iterator AI = BD->param_begin(), | ||||||||||||
3275 | E = BD->param_end(); AI != E; ++AI) { | ||||||||||||
3276 | if (AI != BD->param_begin()) S += ", "; | ||||||||||||
3277 | ParamStr = (*AI)->getNameAsString(); | ||||||||||||
3278 | QualType QT = (*AI)->getType(); | ||||||||||||
3279 | (void)convertBlockPointerToFunctionPointer(QT); | ||||||||||||
3280 | QT.getAsStringInternal(ParamStr, Context->getPrintingPolicy()); | ||||||||||||
3281 | S += ParamStr; | ||||||||||||
3282 | } | ||||||||||||
3283 | if (FT->isVariadic()) { | ||||||||||||
3284 | if (!BD->param_empty()) S += ", "; | ||||||||||||
3285 | S += "..."; | ||||||||||||
3286 | } | ||||||||||||
3287 | S += ')'; | ||||||||||||
3288 | } | ||||||||||||
3289 | S += " {\n"; | ||||||||||||
3290 | |||||||||||||
3291 | // Create local declarations to avoid rewriting all closure decl ref exprs. | ||||||||||||
3292 | // First, emit a declaration for all "by ref" decls. | ||||||||||||
3293 | for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(), | ||||||||||||
3294 | E = BlockByRefDecls.end(); I != E; ++I) { | ||||||||||||
3295 | S += " "; | ||||||||||||
3296 | std::string Name = (*I)->getNameAsString(); | ||||||||||||
3297 | std::string TypeString; | ||||||||||||
3298 | RewriteByRefString(TypeString, Name, (*I)); | ||||||||||||
3299 | TypeString += " *"; | ||||||||||||
3300 | Name = TypeString + Name; | ||||||||||||
3301 | S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by ref\n"; | ||||||||||||
3302 | } | ||||||||||||
3303 | // Next, emit a declaration for all "by copy" declarations. | ||||||||||||
3304 | for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(), | ||||||||||||
3305 | E = BlockByCopyDecls.end(); I != E; ++I) { | ||||||||||||
3306 | S += " "; | ||||||||||||
3307 | // Handle nested closure invocation. For example: | ||||||||||||
3308 | // | ||||||||||||
3309 | // void (^myImportedClosure)(void); | ||||||||||||
3310 | // myImportedClosure = ^(void) { setGlobalInt(x + y); }; | ||||||||||||
3311 | // | ||||||||||||
3312 | // void (^anotherClosure)(void); | ||||||||||||
3313 | // anotherClosure = ^(void) { | ||||||||||||
3314 | // myImportedClosure(); // import and invoke the closure | ||||||||||||
3315 | // }; | ||||||||||||
3316 | // | ||||||||||||
3317 | if (isTopLevelBlockPointerType((*I)->getType())) { | ||||||||||||
3318 | RewriteBlockPointerTypeVariable(S, (*I)); | ||||||||||||
3319 | S += " = ("; | ||||||||||||
3320 | RewriteBlockPointerType(S, (*I)->getType()); | ||||||||||||
3321 | S += ")"; | ||||||||||||
3322 | S += "__cself->" + (*I)->getNameAsString() + "; // bound by copy\n"; | ||||||||||||
3323 | } | ||||||||||||
3324 | else { | ||||||||||||
3325 | std::string Name = (*I)->getNameAsString(); | ||||||||||||
3326 | QualType QT = (*I)->getType(); | ||||||||||||
3327 | if (HasLocalVariableExternalStorage(*I)) | ||||||||||||
3328 | QT = Context->getPointerType(QT); | ||||||||||||
3329 | QT.getAsStringInternal(Name, Context->getPrintingPolicy()); | ||||||||||||
3330 | S += Name + " = __cself->" + | ||||||||||||
3331 | (*I)->getNameAsString() + "; // bound by copy\n"; | ||||||||||||
3332 | } | ||||||||||||
3333 | } | ||||||||||||
3334 | std::string RewrittenStr = RewrittenBlockExprs[CE]; | ||||||||||||
3335 | const char *cstr = RewrittenStr.c_str(); | ||||||||||||
3336 | while (*cstr++ != '{') ; | ||||||||||||
3337 | S += cstr; | ||||||||||||
3338 | S += "\n"; | ||||||||||||
3339 | return S; | ||||||||||||
3340 | } | ||||||||||||
3341 | |||||||||||||
3342 | std::string RewriteObjC::SynthesizeBlockHelperFuncs(BlockExpr *CE, int i, | ||||||||||||
3343 | StringRef funcName, | ||||||||||||
3344 | std::string Tag) { | ||||||||||||
3345 | std::string StructRef = "struct " + Tag; | ||||||||||||
3346 | std::string S = "static void __"; | ||||||||||||
3347 | |||||||||||||
3348 | S += funcName; | ||||||||||||
3349 | S += "_block_copy_" + utostr(i); | ||||||||||||
3350 | S += "(" + StructRef; | ||||||||||||
3351 | S += "*dst, " + StructRef; | ||||||||||||
3352 | S += "*src) {"; | ||||||||||||
3353 | for (ValueDecl *VD : ImportedBlockDecls) { | ||||||||||||
3354 | S += "_Block_object_assign((void*)&dst->"; | ||||||||||||
3355 | S += VD->getNameAsString(); | ||||||||||||
3356 | S += ", (void*)src->"; | ||||||||||||
3357 | S += VD->getNameAsString(); | ||||||||||||
3358 | if (BlockByRefDeclsPtrSet.count(VD)) | ||||||||||||
3359 | S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);"; | ||||||||||||
3360 | else if (VD->getType()->isBlockPointerType()) | ||||||||||||
3361 | S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);"; | ||||||||||||
3362 | else | ||||||||||||
3363 | S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);"; | ||||||||||||
3364 | } | ||||||||||||
3365 | S += "}\n"; | ||||||||||||
3366 | |||||||||||||
3367 | S += "\nstatic void __"; | ||||||||||||
3368 | S += funcName; | ||||||||||||
3369 | S += "_block_dispose_" + utostr(i); | ||||||||||||
3370 | S += "(" + StructRef; | ||||||||||||
3371 | S += "*src) {"; | ||||||||||||
3372 | for (ValueDecl *VD : ImportedBlockDecls) { | ||||||||||||
3373 | S += "_Block_object_dispose((void*)src->"; | ||||||||||||
3374 | S += VD->getNameAsString(); | ||||||||||||
3375 | if (BlockByRefDeclsPtrSet.count(VD)) | ||||||||||||
3376 | S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);"; | ||||||||||||
3377 | else if (VD->getType()->isBlockPointerType()) | ||||||||||||
3378 | S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);"; | ||||||||||||
3379 | else | ||||||||||||
3380 | S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);"; | ||||||||||||
3381 | } | ||||||||||||
3382 | S += "}\n"; | ||||||||||||
3383 | return S; | ||||||||||||
3384 | } | ||||||||||||
3385 | |||||||||||||
3386 | std::string RewriteObjC::SynthesizeBlockImpl(BlockExpr *CE, std::string Tag, | ||||||||||||
3387 | std::string Desc) { | ||||||||||||
3388 | std::string S = "\nstruct " + Tag; | ||||||||||||
3389 | std::string Constructor = " " + Tag; | ||||||||||||
3390 | |||||||||||||
3391 | S += " {\n struct __block_impl impl;\n"; | ||||||||||||
3392 | S += " struct " + Desc; | ||||||||||||
3393 | S += "* Desc;\n"; | ||||||||||||
3394 | |||||||||||||
3395 | Constructor += "(void *fp, "; // Invoke function pointer. | ||||||||||||
3396 | Constructor += "struct " + Desc; // Descriptor pointer. | ||||||||||||
3397 | Constructor += " *desc"; | ||||||||||||
3398 | |||||||||||||
3399 | if (BlockDeclRefs.size()) { | ||||||||||||
3400 | // Output all "by copy" declarations. | ||||||||||||
3401 | for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(), | ||||||||||||
3402 | E = BlockByCopyDecls.end(); I != E; ++I) { | ||||||||||||
3403 | S += " "; | ||||||||||||
3404 | std::string FieldName = (*I)->getNameAsString(); | ||||||||||||
3405 | std::string ArgName = "_" + FieldName; | ||||||||||||
3406 | // Handle nested closure invocation. For example: | ||||||||||||
3407 | // | ||||||||||||
3408 | // void (^myImportedBlock)(void); | ||||||||||||
3409 | // myImportedBlock = ^(void) { setGlobalInt(x + y); }; | ||||||||||||
3410 | // | ||||||||||||
3411 | // void (^anotherBlock)(void); | ||||||||||||
3412 | // anotherBlock = ^(void) { | ||||||||||||
3413 | // myImportedBlock(); // import and invoke the closure | ||||||||||||
3414 | // }; | ||||||||||||
3415 | // | ||||||||||||
3416 | if (isTopLevelBlockPointerType((*I)->getType())) { | ||||||||||||
3417 | S += "struct __block_impl *"; | ||||||||||||
3418 | Constructor += ", void *" + ArgName; | ||||||||||||
3419 | } else { | ||||||||||||
3420 | QualType QT = (*I)->getType(); | ||||||||||||
3421 | if (HasLocalVariableExternalStorage(*I)) | ||||||||||||
3422 | QT = Context->getPointerType(QT); | ||||||||||||
3423 | QT.getAsStringInternal(FieldName, Context->getPrintingPolicy()); | ||||||||||||
3424 | QT.getAsStringInternal(ArgName, Context->getPrintingPolicy()); | ||||||||||||
3425 | Constructor += ", " + ArgName; | ||||||||||||
3426 | } | ||||||||||||
3427 | S += FieldName + ";\n"; | ||||||||||||
3428 | } | ||||||||||||
3429 | // Output all "by ref" declarations. | ||||||||||||
3430 | for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(), | ||||||||||||
3431 | E = BlockByRefDecls.end(); I != E; ++I) { | ||||||||||||
3432 | S += " "; | ||||||||||||
3433 | std::string FieldName = (*I)->getNameAsString(); | ||||||||||||
3434 | std::string ArgName = "_" + FieldName; | ||||||||||||
3435 | { | ||||||||||||
3436 | std::string TypeString; | ||||||||||||
3437 | RewriteByRefString(TypeString, FieldName, (*I)); | ||||||||||||
3438 | TypeString += " *"; | ||||||||||||
3439 | FieldName = TypeString + FieldName; | ||||||||||||
3440 | ArgName = TypeString + ArgName; | ||||||||||||
3441 | Constructor += ", " + ArgName; | ||||||||||||
3442 | } | ||||||||||||
3443 | S += FieldName + "; // by ref\n"; | ||||||||||||
3444 | } | ||||||||||||
3445 | // Finish writing the constructor. | ||||||||||||
3446 | Constructor += ", int flags=0)"; | ||||||||||||
3447 | // Initialize all "by copy" arguments. | ||||||||||||
3448 | bool firsTime = true; | ||||||||||||
3449 | for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(), | ||||||||||||
3450 | E = BlockByCopyDecls.end(); I != E; ++I) { | ||||||||||||
3451 | std::string Name = (*I)->getNameAsString(); | ||||||||||||
3452 | if (firsTime) { | ||||||||||||
3453 | Constructor += " : "; | ||||||||||||
3454 | firsTime = false; | ||||||||||||
3455 | } | ||||||||||||
3456 | else | ||||||||||||
3457 | Constructor += ", "; | ||||||||||||
3458 | if (isTopLevelBlockPointerType((*I)->getType())) | ||||||||||||
3459 | Constructor += Name + "((struct __block_impl *)_" + Name + ")"; | ||||||||||||
3460 | else | ||||||||||||
3461 | Constructor += Name + "(_" + Name + ")"; | ||||||||||||
3462 | } | ||||||||||||
3463 | // Initialize all "by ref" arguments. | ||||||||||||
3464 | for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(), | ||||||||||||
3465 | E = BlockByRefDecls.end(); I != E; ++I) { | ||||||||||||
3466 | std::string Name = (*I)->getNameAsString(); | ||||||||||||
3467 | if (firsTime) { | ||||||||||||
3468 | Constructor += " : "; | ||||||||||||
3469 | firsTime = false; | ||||||||||||
3470 | } | ||||||||||||
3471 | else | ||||||||||||
3472 | Constructor += ", "; | ||||||||||||
3473 | Constructor += Name + "(_" + Name + "->__forwarding)"; | ||||||||||||
3474 | } | ||||||||||||
3475 | |||||||||||||
3476 | Constructor += " {\n"; | ||||||||||||
3477 | if (GlobalVarDecl) | ||||||||||||
3478 | Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n"; | ||||||||||||
3479 | else | ||||||||||||
3480 | Constructor += " impl.isa = &_NSConcreteStackBlock;\n"; | ||||||||||||
3481 | Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n"; | ||||||||||||
3482 | |||||||||||||
3483 | Constructor += " Desc = desc;\n"; | ||||||||||||
3484 | } else { | ||||||||||||
3485 | // Finish writing the constructor. | ||||||||||||
3486 | Constructor += ", int flags=0) {\n"; | ||||||||||||
3487 | if (GlobalVarDecl) | ||||||||||||
3488 | Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n"; | ||||||||||||
3489 | else | ||||||||||||
3490 | Constructor += " impl.isa = &_NSConcreteStackBlock;\n"; | ||||||||||||
3491 | Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n"; | ||||||||||||
3492 | Constructor += " Desc = desc;\n"; | ||||||||||||
3493 | } | ||||||||||||
3494 | Constructor += " "; | ||||||||||||
3495 | Constructor += "}\n"; | ||||||||||||
3496 | S += Constructor; | ||||||||||||
3497 | S += "};\n"; | ||||||||||||
3498 | return S; | ||||||||||||
3499 | } | ||||||||||||
3500 | |||||||||||||
3501 | std::string RewriteObjC::SynthesizeBlockDescriptor(std::string DescTag, | ||||||||||||
3502 | std::string ImplTag, int i, | ||||||||||||
3503 | StringRef FunName, | ||||||||||||
3504 | unsigned hasCopy) { | ||||||||||||
3505 | std::string S = "\nstatic struct " + DescTag; | ||||||||||||
3506 | |||||||||||||
3507 | S += " {\n unsigned long reserved;\n"; | ||||||||||||
3508 | S += " unsigned long Block_size;\n"; | ||||||||||||
3509 | if (hasCopy) { | ||||||||||||
3510 | S += " void (*copy)(struct "; | ||||||||||||
3511 | S += ImplTag; S += "*, struct "; | ||||||||||||
3512 | S += ImplTag; S += "*);\n"; | ||||||||||||
3513 | |||||||||||||
3514 | S += " void (*dispose)(struct "; | ||||||||||||
3515 | S += ImplTag; S += "*);\n"; | ||||||||||||
3516 | } | ||||||||||||
3517 | S += "} "; | ||||||||||||
3518 | |||||||||||||
3519 | S += DescTag + "_DATA = { 0, sizeof(struct "; | ||||||||||||
3520 | S += ImplTag + ")"; | ||||||||||||
3521 | if (hasCopy) { | ||||||||||||
3522 | S += ", __" + FunName.str() + "_block_copy_" + utostr(i); | ||||||||||||
3523 | S += ", __" + FunName.str() + "_block_dispose_" + utostr(i); | ||||||||||||
3524 | } | ||||||||||||
3525 | S += "};\n"; | ||||||||||||
3526 | return S; | ||||||||||||
3527 | } | ||||||||||||
3528 | |||||||||||||
3529 | void RewriteObjC::SynthesizeBlockLiterals(SourceLocation FunLocStart, | ||||||||||||
3530 | StringRef FunName) { | ||||||||||||
3531 | // Insert declaration for the function in which block literal is used. | ||||||||||||
3532 | if (CurFunctionDeclToDeclareForBlock && !Blocks.empty()) | ||||||||||||
3533 | RewriteBlockLiteralFunctionDecl(CurFunctionDeclToDeclareForBlock); | ||||||||||||
3534 | bool RewriteSC = (GlobalVarDecl && | ||||||||||||
3535 | !Blocks.empty() && | ||||||||||||
3536 | GlobalVarDecl->getStorageClass() == SC_Static && | ||||||||||||
3537 | GlobalVarDecl->getType().getCVRQualifiers()); | ||||||||||||
3538 | if (RewriteSC) { | ||||||||||||
3539 | std::string SC(" void __"); | ||||||||||||
3540 | SC += GlobalVarDecl->getNameAsString(); | ||||||||||||
3541 | SC += "() {}"; | ||||||||||||
3542 | InsertText(FunLocStart, SC); | ||||||||||||
3543 | } | ||||||||||||
3544 | |||||||||||||
3545 | // Insert closures that were part of the function. | ||||||||||||
3546 | for (unsigned i = 0, count=0; i < Blocks.size(); i++) { | ||||||||||||
3547 | CollectBlockDeclRefInfo(Blocks[i]); | ||||||||||||
3548 | // Need to copy-in the inner copied-in variables not actually used in this | ||||||||||||
3549 | // block. | ||||||||||||
3550 | for (int j = 0; j < InnerDeclRefsCount[i]; j++) { | ||||||||||||
3551 | DeclRefExpr *Exp = InnerDeclRefs[count++]; | ||||||||||||
3552 | ValueDecl *VD = Exp->getDecl(); | ||||||||||||
3553 | BlockDeclRefs.push_back(Exp); | ||||||||||||
3554 | if (!VD->hasAttr<BlocksAttr>() && !BlockByCopyDeclsPtrSet.count(VD)) { | ||||||||||||
3555 | BlockByCopyDeclsPtrSet.insert(VD); | ||||||||||||
3556 | BlockByCopyDecls.push_back(VD); | ||||||||||||
3557 | } | ||||||||||||
3558 | if (VD->hasAttr<BlocksAttr>() && !BlockByRefDeclsPtrSet.count(VD)) { | ||||||||||||
3559 | BlockByRefDeclsPtrSet.insert(VD); | ||||||||||||
3560 | BlockByRefDecls.push_back(VD); | ||||||||||||
3561 | } | ||||||||||||
3562 | // imported objects in the inner blocks not used in the outer | ||||||||||||
3563 | // blocks must be copied/disposed in the outer block as well. | ||||||||||||
3564 | if (VD->hasAttr<BlocksAttr>() || | ||||||||||||
3565 | VD->getType()->isObjCObjectPointerType() || | ||||||||||||
3566 | VD->getType()->isBlockPointerType()) | ||||||||||||
3567 | ImportedBlockDecls.insert(VD); | ||||||||||||
3568 | } | ||||||||||||
3569 | |||||||||||||
3570 | std::string ImplTag = "__" + FunName.str() + "_block_impl_" + utostr(i); | ||||||||||||
3571 | std::string DescTag = "__" + FunName.str() + "_block_desc_" + utostr(i); | ||||||||||||
3572 | |||||||||||||
3573 | std::string CI = SynthesizeBlockImpl(Blocks[i], ImplTag, DescTag); | ||||||||||||
3574 | |||||||||||||
3575 | InsertText(FunLocStart, CI); | ||||||||||||
3576 | |||||||||||||
3577 | std::string CF = SynthesizeBlockFunc(Blocks[i], i, FunName, ImplTag); | ||||||||||||
3578 | |||||||||||||
3579 | InsertText(FunLocStart, CF); | ||||||||||||
3580 | |||||||||||||
3581 | if (ImportedBlockDecls.size()) { | ||||||||||||
3582 | std::string HF = SynthesizeBlockHelperFuncs(Blocks[i], i, FunName, ImplTag); | ||||||||||||
3583 | InsertText(FunLocStart, HF); | ||||||||||||
3584 | } | ||||||||||||
3585 | std::string BD = SynthesizeBlockDescriptor(DescTag, ImplTag, i, FunName, | ||||||||||||
3586 | ImportedBlockDecls.size() > 0); | ||||||||||||
3587 | InsertText(FunLocStart, BD); | ||||||||||||
3588 | |||||||||||||
3589 | BlockDeclRefs.clear(); | ||||||||||||
3590 | BlockByRefDecls.clear(); | ||||||||||||
3591 | BlockByRefDeclsPtrSet.clear(); | ||||||||||||
3592 | BlockByCopyDecls.clear(); | ||||||||||||
3593 | BlockByCopyDeclsPtrSet.clear(); | ||||||||||||
3594 | ImportedBlockDecls.clear(); | ||||||||||||
3595 | } | ||||||||||||
3596 | if (RewriteSC) { | ||||||||||||
3597 | // Must insert any 'const/volatile/static here. Since it has been | ||||||||||||
3598 | // removed as result of rewriting of block literals. | ||||||||||||
3599 | std::string SC; | ||||||||||||
3600 | if (GlobalVarDecl->getStorageClass() == SC_Static) | ||||||||||||
3601 | SC = "static "; | ||||||||||||
3602 | if (GlobalVarDecl->getType().isConstQualified()) | ||||||||||||
3603 | SC += "const "; | ||||||||||||
3604 | if (GlobalVarDecl->getType().isVolatileQualified()) | ||||||||||||
3605 | SC += "volatile "; | ||||||||||||
3606 | if (GlobalVarDecl->getType().isRestrictQualified()) | ||||||||||||
3607 | SC += "restrict "; | ||||||||||||
3608 | InsertText(FunLocStart, SC); | ||||||||||||
3609 | } | ||||||||||||
3610 | |||||||||||||
3611 | Blocks.clear(); | ||||||||||||
3612 | InnerDeclRefsCount.clear(); | ||||||||||||
3613 | InnerDeclRefs.clear(); | ||||||||||||
3614 | RewrittenBlockExprs.clear(); | ||||||||||||
3615 | } | ||||||||||||
3616 | |||||||||||||
3617 | void RewriteObjC::InsertBlockLiteralsWithinFunction(FunctionDecl *FD) { | ||||||||||||
3618 | SourceLocation FunLocStart = FD->getTypeSpecStartLoc(); | ||||||||||||
3619 | StringRef FuncName = FD->getName(); | ||||||||||||
3620 | |||||||||||||
3621 | SynthesizeBlockLiterals(FunLocStart, FuncName); | ||||||||||||
3622 | } | ||||||||||||
3623 | |||||||||||||
3624 | static void BuildUniqueMethodName(std::string &Name, | ||||||||||||
3625 | ObjCMethodDecl *MD) { | ||||||||||||
3626 | ObjCInterfaceDecl *IFace = MD->getClassInterface(); | ||||||||||||
3627 | Name = IFace->getName(); | ||||||||||||
3628 | Name += "__" + MD->getSelector().getAsString(); | ||||||||||||
3629 | // Convert colons to underscores. | ||||||||||||
3630 | std::string::size_type loc = 0; | ||||||||||||
3631 | while ((loc = Name.find(':', loc)) != std::string::npos) | ||||||||||||
3632 | Name.replace(loc, 1, "_"); | ||||||||||||
3633 | } | ||||||||||||
3634 | |||||||||||||
3635 | void RewriteObjC::InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD) { | ||||||||||||
3636 | // fprintf(stderr,"In InsertBlockLiteralsWitinMethod\n"); | ||||||||||||
3637 | // SourceLocation FunLocStart = MD->getBeginLoc(); | ||||||||||||
3638 | SourceLocation FunLocStart = MD->getBeginLoc(); | ||||||||||||
3639 | std::string FuncName; | ||||||||||||
3640 | BuildUniqueMethodName(FuncName, MD); | ||||||||||||
3641 | SynthesizeBlockLiterals(FunLocStart, FuncName); | ||||||||||||
3642 | } | ||||||||||||
3643 | |||||||||||||
3644 | void RewriteObjC::GetBlockDeclRefExprs(Stmt *S) { | ||||||||||||
3645 | for (Stmt *SubStmt : S->children()) | ||||||||||||
3646 | if (SubStmt) { | ||||||||||||
3647 | if (BlockExpr *CBE = dyn_cast<BlockExpr>(SubStmt)) | ||||||||||||
3648 | GetBlockDeclRefExprs(CBE->getBody()); | ||||||||||||
3649 | else | ||||||||||||
3650 | GetBlockDeclRefExprs(SubStmt); | ||||||||||||
3651 | } | ||||||||||||
3652 | // Handle specific things. | ||||||||||||
3653 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) | ||||||||||||
3654 | if (DRE->refersToEnclosingVariableOrCapture() || | ||||||||||||
3655 | HasLocalVariableExternalStorage(DRE->getDecl())) | ||||||||||||
3656 | // FIXME: Handle enums. | ||||||||||||
3657 | BlockDeclRefs.push_back(DRE); | ||||||||||||
3658 | } | ||||||||||||
3659 | |||||||||||||
3660 | void RewriteObjC::GetInnerBlockDeclRefExprs(Stmt *S, | ||||||||||||
3661 | SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs, | ||||||||||||
3662 | llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts) { | ||||||||||||
3663 | for (Stmt *SubStmt : S->children()) | ||||||||||||
3664 | if (SubStmt) { | ||||||||||||
3665 | if (BlockExpr *CBE = dyn_cast<BlockExpr>(SubStmt)) { | ||||||||||||
3666 | InnerContexts.insert(cast<DeclContext>(CBE->getBlockDecl())); | ||||||||||||
3667 | GetInnerBlockDeclRefExprs(CBE->getBody(), | ||||||||||||
3668 | InnerBlockDeclRefs, | ||||||||||||
3669 | InnerContexts); | ||||||||||||
3670 | } | ||||||||||||
3671 | else | ||||||||||||
3672 | GetInnerBlockDeclRefExprs(SubStmt, InnerBlockDeclRefs, InnerContexts); | ||||||||||||
3673 | } | ||||||||||||
3674 | // Handle specific things. | ||||||||||||
3675 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) { | ||||||||||||
3676 | if (DRE->refersToEnclosingVariableOrCapture() || | ||||||||||||
3677 | HasLocalVariableExternalStorage(DRE->getDecl())) { | ||||||||||||
3678 | if (!InnerContexts.count(DRE->getDecl()->getDeclContext())) | ||||||||||||
3679 | InnerBlockDeclRefs.push_back(DRE); | ||||||||||||
3680 | if (VarDecl *Var = cast<VarDecl>(DRE->getDecl())) | ||||||||||||
3681 | if (Var->isFunctionOrMethodVarDecl()) | ||||||||||||
3682 | ImportedLocalExternalDecls.insert(Var); | ||||||||||||
3683 | } | ||||||||||||
3684 | } | ||||||||||||
3685 | } | ||||||||||||
3686 | |||||||||||||
3687 | /// convertFunctionTypeOfBlocks - This routine converts a function type | ||||||||||||
3688 | /// whose result type may be a block pointer or whose argument type(s) | ||||||||||||
3689 | /// might be block pointers to an equivalent function type replacing | ||||||||||||
3690 | /// all block pointers to function pointers. | ||||||||||||
3691 | QualType RewriteObjC::convertFunctionTypeOfBlocks(const FunctionType *FT) { | ||||||||||||
3692 | const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT); | ||||||||||||
3693 | // FTP will be null for closures that don't take arguments. | ||||||||||||
3694 | // Generate a funky cast. | ||||||||||||
3695 | SmallVector<QualType, 8> ArgTypes; | ||||||||||||
3696 | QualType Res = FT->getReturnType(); | ||||||||||||
3697 | bool HasBlockType = convertBlockPointerToFunctionPointer(Res); | ||||||||||||
3698 | |||||||||||||
3699 | if (FTP) { | ||||||||||||
3700 | for (auto &I : FTP->param_types()) { | ||||||||||||
3701 | QualType t = I; | ||||||||||||
3702 | // Make sure we convert "t (^)(...)" to "t (*)(...)". | ||||||||||||
3703 | if (convertBlockPointerToFunctionPointer(t)) | ||||||||||||
3704 | HasBlockType = true; | ||||||||||||
3705 | ArgTypes.push_back(t); | ||||||||||||
3706 | } | ||||||||||||
3707 | } | ||||||||||||
3708 | QualType FuncType; | ||||||||||||
3709 | // FIXME. Does this work if block takes no argument but has a return type | ||||||||||||
3710 | // which is of block type? | ||||||||||||
3711 | if (HasBlockType) | ||||||||||||
3712 | FuncType = getSimpleFunctionType(Res, ArgTypes); | ||||||||||||
3713 | else FuncType = QualType(FT, 0); | ||||||||||||
3714 | return FuncType; | ||||||||||||
3715 | } | ||||||||||||
3716 | |||||||||||||
3717 | Stmt *RewriteObjC::SynthesizeBlockCall(CallExpr *Exp, const Expr *BlockExp) { | ||||||||||||
3718 | // Navigate to relevant type information. | ||||||||||||
3719 | const BlockPointerType *CPT = nullptr; | ||||||||||||
3720 | |||||||||||||
3721 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BlockExp)) { | ||||||||||||
3722 | CPT = DRE->getType()->getAs<BlockPointerType>(); | ||||||||||||
3723 | } else if (const MemberExpr *MExpr = dyn_cast<MemberExpr>(BlockExp)) { | ||||||||||||
3724 | CPT = MExpr->getType()->getAs<BlockPointerType>(); | ||||||||||||
3725 | } | ||||||||||||
3726 | else if (const ParenExpr *PRE = dyn_cast<ParenExpr>(BlockExp)) { | ||||||||||||
3727 | return SynthesizeBlockCall(Exp, PRE->getSubExpr()); | ||||||||||||
3728 | } | ||||||||||||
3729 | else if (const ImplicitCastExpr *IEXPR = dyn_cast<ImplicitCastExpr>(BlockExp)) | ||||||||||||
3730 | CPT = IEXPR->getType()->getAs<BlockPointerType>(); | ||||||||||||
3731 | else if (const ConditionalOperator *CEXPR = | ||||||||||||
3732 | dyn_cast<ConditionalOperator>(BlockExp)) { | ||||||||||||
3733 | Expr *LHSExp = CEXPR->getLHS(); | ||||||||||||
3734 | Stmt *LHSStmt = SynthesizeBlockCall(Exp, LHSExp); | ||||||||||||
3735 | Expr *RHSExp = CEXPR->getRHS(); | ||||||||||||
3736 | Stmt *RHSStmt = SynthesizeBlockCall(Exp, RHSExp); | ||||||||||||
3737 | Expr *CONDExp = CEXPR->getCond(); | ||||||||||||
3738 | ConditionalOperator *CondExpr = | ||||||||||||
3739 | new (Context) ConditionalOperator(CONDExp, | ||||||||||||
3740 | SourceLocation(), cast<Expr>(LHSStmt), | ||||||||||||
3741 | SourceLocation(), cast<Expr>(RHSStmt), | ||||||||||||
3742 | Exp->getType(), VK_RValue, OK_Ordinary); | ||||||||||||
3743 | return CondExpr; | ||||||||||||
3744 | } else if (const ObjCIvarRefExpr *IRE = dyn_cast<ObjCIvarRefExpr>(BlockExp)) { | ||||||||||||
3745 | CPT = IRE->getType()->getAs<BlockPointerType>(); | ||||||||||||
3746 | } else if (const PseudoObjectExpr *POE | ||||||||||||
3747 | = dyn_cast<PseudoObjectExpr>(BlockExp)) { | ||||||||||||
3748 | CPT = POE->getType()->castAs<BlockPointerType>(); | ||||||||||||
3749 | } else { | ||||||||||||
3750 | assert(false && "RewriteBlockClass: Bad type")((false && "RewriteBlockClass: Bad type") ? static_cast <void> (0) : __assert_fail ("false && \"RewriteBlockClass: Bad type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3750, __PRETTY_FUNCTION__)); | ||||||||||||
3751 | } | ||||||||||||
3752 | assert(CPT && "RewriteBlockClass: Bad type")((CPT && "RewriteBlockClass: Bad type") ? static_cast <void> (0) : __assert_fail ("CPT && \"RewriteBlockClass: Bad type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3752, __PRETTY_FUNCTION__)); | ||||||||||||
3753 | const FunctionType *FT = CPT->getPointeeType()->getAs<FunctionType>(); | ||||||||||||
3754 | assert(FT && "RewriteBlockClass: Bad type")((FT && "RewriteBlockClass: Bad type") ? static_cast< void> (0) : __assert_fail ("FT && \"RewriteBlockClass: Bad type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3754, __PRETTY_FUNCTION__)); | ||||||||||||
3755 | const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT); | ||||||||||||
3756 | // FTP will be null for closures that don't take arguments. | ||||||||||||
3757 | |||||||||||||
3758 | RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl, | ||||||||||||
3759 | SourceLocation(), SourceLocation(), | ||||||||||||
3760 | &Context->Idents.get("__block_impl")); | ||||||||||||
3761 | QualType PtrBlock = Context->getPointerType(Context->getTagDeclType(RD)); | ||||||||||||
3762 | |||||||||||||
3763 | // Generate a funky cast. | ||||||||||||
3764 | SmallVector<QualType, 8> ArgTypes; | ||||||||||||
3765 | |||||||||||||
3766 | // Push the block argument type. | ||||||||||||
3767 | ArgTypes.push_back(PtrBlock); | ||||||||||||
3768 | if (FTP) { | ||||||||||||
3769 | for (auto &I : FTP->param_types()) { | ||||||||||||
3770 | QualType t = I; | ||||||||||||
3771 | // Make sure we convert "t (^)(...)" to "t (*)(...)". | ||||||||||||
3772 | if (!convertBlockPointerToFunctionPointer(t)) | ||||||||||||
3773 | convertToUnqualifiedObjCType(t); | ||||||||||||
3774 | ArgTypes.push_back(t); | ||||||||||||
3775 | } | ||||||||||||
3776 | } | ||||||||||||
3777 | // Now do the pointer to function cast. | ||||||||||||
3778 | QualType PtrToFuncCastType = getSimpleFunctionType(Exp->getType(), ArgTypes); | ||||||||||||
3779 | |||||||||||||
3780 | PtrToFuncCastType = Context->getPointerType(PtrToFuncCastType); | ||||||||||||
3781 | |||||||||||||
3782 | CastExpr *BlkCast = NoTypeInfoCStyleCastExpr(Context, PtrBlock, | ||||||||||||
3783 | CK_BitCast, | ||||||||||||
3784 | const_cast<Expr*>(BlockExp)); | ||||||||||||
3785 | // Don't forget the parens to enforce the proper binding. | ||||||||||||
3786 | ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), | ||||||||||||
3787 | BlkCast); | ||||||||||||
3788 | //PE->dump(); | ||||||||||||
3789 | |||||||||||||
3790 | FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(), | ||||||||||||
3791 | SourceLocation(), | ||||||||||||
3792 | &Context->Idents.get("FuncPtr"), | ||||||||||||
3793 | Context->VoidPtrTy, nullptr, | ||||||||||||
3794 | /*BitWidth=*/nullptr, /*Mutable=*/true, | ||||||||||||
3795 | ICIS_NoInit); | ||||||||||||
3796 | MemberExpr *ME = MemberExpr::CreateImplicit( | ||||||||||||
3797 | *Context, PE, true, FD, FD->getType(), VK_LValue, OK_Ordinary); | ||||||||||||
3798 | |||||||||||||
3799 | CastExpr *FunkCast = NoTypeInfoCStyleCastExpr(Context, PtrToFuncCastType, | ||||||||||||
3800 | CK_BitCast, ME); | ||||||||||||
3801 | PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), FunkCast); | ||||||||||||
3802 | |||||||||||||
3803 | SmallVector<Expr*, 8> BlkExprs; | ||||||||||||
3804 | // Add the implicit argument. | ||||||||||||
3805 | BlkExprs.push_back(BlkCast); | ||||||||||||
3806 | // Add the user arguments. | ||||||||||||
3807 | for (CallExpr::arg_iterator I = Exp->arg_begin(), | ||||||||||||
3808 | E = Exp->arg_end(); I != E; ++I) { | ||||||||||||
3809 | BlkExprs.push_back(*I); | ||||||||||||
3810 | } | ||||||||||||
3811 | CallExpr *CE = CallExpr::Create(*Context, PE, BlkExprs, Exp->getType(), | ||||||||||||
3812 | VK_RValue, SourceLocation()); | ||||||||||||
3813 | return CE; | ||||||||||||
3814 | } | ||||||||||||
3815 | |||||||||||||
3816 | // We need to return the rewritten expression to handle cases where the | ||||||||||||
3817 | // BlockDeclRefExpr is embedded in another expression being rewritten. | ||||||||||||
3818 | // For example: | ||||||||||||
3819 | // | ||||||||||||
3820 | // int main() { | ||||||||||||
3821 | // __block Foo *f; | ||||||||||||
3822 | // __block int i; | ||||||||||||
3823 | // | ||||||||||||
3824 | // void (^myblock)() = ^() { | ||||||||||||
3825 | // [f test]; // f is a BlockDeclRefExpr embedded in a message (which is being rewritten). | ||||||||||||
3826 | // i = 77; | ||||||||||||
3827 | // }; | ||||||||||||
3828 | //} | ||||||||||||
3829 | Stmt *RewriteObjC::RewriteBlockDeclRefExpr(DeclRefExpr *DeclRefExp) { | ||||||||||||
3830 | // Rewrite the byref variable into BYREFVAR->__forwarding->BYREFVAR | ||||||||||||
3831 | // for each DeclRefExp where BYREFVAR is name of the variable. | ||||||||||||
3832 | ValueDecl *VD = DeclRefExp->getDecl(); | ||||||||||||
3833 | bool isArrow = DeclRefExp->refersToEnclosingVariableOrCapture() || | ||||||||||||
3834 | HasLocalVariableExternalStorage(DeclRefExp->getDecl()); | ||||||||||||
3835 | |||||||||||||
3836 | FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(), | ||||||||||||
3837 | SourceLocation(), | ||||||||||||
3838 | &Context->Idents.get("__forwarding"), | ||||||||||||
3839 | Context->VoidPtrTy, nullptr, | ||||||||||||
3840 | /*BitWidth=*/nullptr, /*Mutable=*/true, | ||||||||||||
3841 | ICIS_NoInit); | ||||||||||||
3842 | MemberExpr *ME = | ||||||||||||
3843 | MemberExpr::CreateImplicit(*Context, DeclRefExp, isArrow, FD, | ||||||||||||
3844 | FD->getType(), VK_LValue, OK_Ordinary); | ||||||||||||
3845 | |||||||||||||
3846 | StringRef Name = VD->getName(); | ||||||||||||
3847 | FD = FieldDecl::Create(*Context, nullptr, SourceLocation(), SourceLocation(), | ||||||||||||
3848 | &Context->Idents.get(Name), | ||||||||||||
3849 | Context->VoidPtrTy, nullptr, | ||||||||||||
3850 | /*BitWidth=*/nullptr, /*Mutable=*/true, | ||||||||||||
3851 | ICIS_NoInit); | ||||||||||||
3852 | ME = MemberExpr::CreateImplicit(*Context, ME, true, FD, DeclRefExp->getType(), | ||||||||||||
3853 | VK_LValue, OK_Ordinary); | ||||||||||||
3854 | |||||||||||||
3855 | // Need parens to enforce precedence. | ||||||||||||
3856 | ParenExpr *PE = new (Context) ParenExpr(DeclRefExp->getExprLoc(), | ||||||||||||
3857 | DeclRefExp->getExprLoc(), | ||||||||||||
3858 | ME); | ||||||||||||
3859 | ReplaceStmt(DeclRefExp, PE); | ||||||||||||
3860 | return PE; | ||||||||||||
3861 | } | ||||||||||||
3862 | |||||||||||||
3863 | // Rewrites the imported local variable V with external storage | ||||||||||||
3864 | // (static, extern, etc.) as *V | ||||||||||||
3865 | // | ||||||||||||
3866 | Stmt *RewriteObjC::RewriteLocalVariableExternalStorage(DeclRefExpr *DRE) { | ||||||||||||
3867 | ValueDecl *VD = DRE->getDecl(); | ||||||||||||
3868 | if (VarDecl *Var = dyn_cast<VarDecl>(VD)) | ||||||||||||
3869 | if (!ImportedLocalExternalDecls.count(Var)) | ||||||||||||
3870 | return DRE; | ||||||||||||
3871 | Expr *Exp = new (Context) UnaryOperator(DRE, UO_Deref, DRE->getType(), | ||||||||||||
3872 | VK_LValue, OK_Ordinary, | ||||||||||||
3873 | DRE->getLocation(), false); | ||||||||||||
3874 | // Need parens to enforce precedence. | ||||||||||||
3875 | ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), | ||||||||||||
3876 | Exp); | ||||||||||||
3877 | ReplaceStmt(DRE, PE); | ||||||||||||
3878 | return PE; | ||||||||||||
3879 | } | ||||||||||||
3880 | |||||||||||||
3881 | void RewriteObjC::RewriteCastExpr(CStyleCastExpr *CE) { | ||||||||||||
3882 | SourceLocation LocStart = CE->getLParenLoc(); | ||||||||||||
3883 | SourceLocation LocEnd = CE->getRParenLoc(); | ||||||||||||
3884 | |||||||||||||
3885 | // Need to avoid trying to rewrite synthesized casts. | ||||||||||||
3886 | if (LocStart.isInvalid()) | ||||||||||||
3887 | return; | ||||||||||||
3888 | // Need to avoid trying to rewrite casts contained in macros. | ||||||||||||
3889 | if (!Rewriter::isRewritable(LocStart) || !Rewriter::isRewritable(LocEnd)) | ||||||||||||
3890 | return; | ||||||||||||
3891 | |||||||||||||
3892 | const char *startBuf = SM->getCharacterData(LocStart); | ||||||||||||
3893 | const char *endBuf = SM->getCharacterData(LocEnd); | ||||||||||||
3894 | QualType QT = CE->getType(); | ||||||||||||
3895 | const Type* TypePtr = QT->getAs<Type>(); | ||||||||||||
3896 | if (isa<TypeOfExprType>(TypePtr)) { | ||||||||||||
3897 | const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr); | ||||||||||||
3898 | QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType(); | ||||||||||||
3899 | std::string TypeAsString = "("; | ||||||||||||
3900 | RewriteBlockPointerType(TypeAsString, QT); | ||||||||||||
3901 | TypeAsString += ")"; | ||||||||||||
3902 | ReplaceText(LocStart, endBuf-startBuf+1, TypeAsString); | ||||||||||||
3903 | return; | ||||||||||||
3904 | } | ||||||||||||
3905 | // advance the location to startArgList. | ||||||||||||
3906 | const char *argPtr = startBuf; | ||||||||||||
3907 | |||||||||||||
3908 | while (*argPtr++ && (argPtr < endBuf)) { | ||||||||||||
3909 | switch (*argPtr) { | ||||||||||||
3910 | case '^': | ||||||||||||
3911 | // Replace the '^' with '*'. | ||||||||||||
3912 | LocStart = LocStart.getLocWithOffset(argPtr-startBuf); | ||||||||||||
3913 | ReplaceText(LocStart, 1, "*"); | ||||||||||||
3914 | break; | ||||||||||||
3915 | } | ||||||||||||
3916 | } | ||||||||||||
3917 | } | ||||||||||||
3918 | |||||||||||||
3919 | void RewriteObjC::RewriteBlockPointerFunctionArgs(FunctionDecl *FD) { | ||||||||||||
3920 | SourceLocation DeclLoc = FD->getLocation(); | ||||||||||||
3921 | unsigned parenCount = 0; | ||||||||||||
3922 | |||||||||||||
3923 | // We have 1 or more arguments that have closure pointers. | ||||||||||||
3924 | const char *startBuf = SM->getCharacterData(DeclLoc); | ||||||||||||
3925 | const char *startArgList = strchr(startBuf, '('); | ||||||||||||
3926 | |||||||||||||
3927 | assert((*startArgList == '(') && "Rewriter fuzzy parser confused")(((*startArgList == '(') && "Rewriter fuzzy parser confused" ) ? static_cast<void> (0) : __assert_fail ("(*startArgList == '(') && \"Rewriter fuzzy parser confused\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3927, __PRETTY_FUNCTION__)); | ||||||||||||
3928 | |||||||||||||
3929 | parenCount++; | ||||||||||||
3930 | // advance the location to startArgList. | ||||||||||||
3931 | DeclLoc = DeclLoc.getLocWithOffset(startArgList-startBuf); | ||||||||||||
3932 | assert((DeclLoc.isValid()) && "Invalid DeclLoc")(((DeclLoc.isValid()) && "Invalid DeclLoc") ? static_cast <void> (0) : __assert_fail ("(DeclLoc.isValid()) && \"Invalid DeclLoc\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3932, __PRETTY_FUNCTION__)); | ||||||||||||
3933 | |||||||||||||
3934 | const char *argPtr = startArgList; | ||||||||||||
3935 | |||||||||||||
3936 | while (*argPtr++ && parenCount) { | ||||||||||||
3937 | switch (*argPtr) { | ||||||||||||
3938 | case '^': | ||||||||||||
3939 | // Replace the '^' with '*'. | ||||||||||||
3940 | DeclLoc = DeclLoc.getLocWithOffset(argPtr-startArgList); | ||||||||||||
3941 | ReplaceText(DeclLoc, 1, "*"); | ||||||||||||
3942 | break; | ||||||||||||
3943 | case '(': | ||||||||||||
3944 | parenCount++; | ||||||||||||
3945 | break; | ||||||||||||
3946 | case ')': | ||||||||||||
3947 | parenCount--; | ||||||||||||
3948 | break; | ||||||||||||
3949 | } | ||||||||||||
3950 | } | ||||||||||||
3951 | } | ||||||||||||
3952 | |||||||||||||
3953 | bool RewriteObjC::PointerTypeTakesAnyBlockArguments(QualType QT) { | ||||||||||||
3954 | const FunctionProtoType *FTP; | ||||||||||||
3955 | const PointerType *PT = QT->getAs<PointerType>(); | ||||||||||||
3956 | if (PT) { | ||||||||||||
3957 | FTP = PT->getPointeeType()->getAs<FunctionProtoType>(); | ||||||||||||
3958 | } else { | ||||||||||||
3959 | const BlockPointerType *BPT = QT->getAs<BlockPointerType>(); | ||||||||||||
3960 | assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type")((BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type" ) ? static_cast<void> (0) : __assert_fail ("BPT && \"BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3960, __PRETTY_FUNCTION__)); | ||||||||||||
3961 | FTP = BPT->getPointeeType()->getAs<FunctionProtoType>(); | ||||||||||||
3962 | } | ||||||||||||
3963 | if (FTP) { | ||||||||||||
3964 | for (const auto &I : FTP->param_types()) | ||||||||||||
3965 | if (isTopLevelBlockPointerType(I)) | ||||||||||||
3966 | return true; | ||||||||||||
3967 | } | ||||||||||||
3968 | return false; | ||||||||||||
3969 | } | ||||||||||||
3970 | |||||||||||||
3971 | bool RewriteObjC::PointerTypeTakesAnyObjCQualifiedType(QualType QT) { | ||||||||||||
3972 | const FunctionProtoType *FTP; | ||||||||||||
3973 | const PointerType *PT = QT->getAs<PointerType>(); | ||||||||||||
3974 | if (PT) { | ||||||||||||
3975 | FTP = PT->getPointeeType()->getAs<FunctionProtoType>(); | ||||||||||||
3976 | } else { | ||||||||||||
3977 | const BlockPointerType *BPT = QT->getAs<BlockPointerType>(); | ||||||||||||
3978 | assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type")((BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type" ) ? static_cast<void> (0) : __assert_fail ("BPT && \"BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3978, __PRETTY_FUNCTION__)); | ||||||||||||
3979 | FTP = BPT->getPointeeType()->getAs<FunctionProtoType>(); | ||||||||||||
3980 | } | ||||||||||||
3981 | if (FTP) { | ||||||||||||
3982 | for (const auto &I : FTP->param_types()) { | ||||||||||||
3983 | if (I->isObjCQualifiedIdType()) | ||||||||||||
3984 | return true; | ||||||||||||
3985 | if (I->isObjCObjectPointerType() && | ||||||||||||
3986 | I->getPointeeType()->isObjCQualifiedInterfaceType()) | ||||||||||||
3987 | return true; | ||||||||||||
3988 | } | ||||||||||||
3989 | |||||||||||||
3990 | } | ||||||||||||
3991 | return false; | ||||||||||||
3992 | } | ||||||||||||
3993 | |||||||||||||
3994 | void RewriteObjC::GetExtentOfArgList(const char *Name, const char *&LParen, | ||||||||||||
3995 | const char *&RParen) { | ||||||||||||
3996 | const char *argPtr = strchr(Name, '('); | ||||||||||||
3997 | assert((*argPtr == '(') && "Rewriter fuzzy parser confused")(((*argPtr == '(') && "Rewriter fuzzy parser confused" ) ? static_cast<void> (0) : __assert_fail ("(*argPtr == '(') && \"Rewriter fuzzy parser confused\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 3997, __PRETTY_FUNCTION__)); | ||||||||||||
3998 | |||||||||||||
3999 | LParen = argPtr; // output the start. | ||||||||||||
4000 | argPtr++; // skip past the left paren. | ||||||||||||
4001 | unsigned parenCount = 1; | ||||||||||||
4002 | |||||||||||||
4003 | while (*argPtr && parenCount) { | ||||||||||||
4004 | switch (*argPtr) { | ||||||||||||
4005 | case '(': parenCount++; break; | ||||||||||||
4006 | case ')': parenCount--; break; | ||||||||||||
4007 | default: break; | ||||||||||||
4008 | } | ||||||||||||
4009 | if (parenCount) argPtr++; | ||||||||||||
4010 | } | ||||||||||||
4011 | assert((*argPtr == ')') && "Rewriter fuzzy parser confused")(((*argPtr == ')') && "Rewriter fuzzy parser confused" ) ? static_cast<void> (0) : __assert_fail ("(*argPtr == ')') && \"Rewriter fuzzy parser confused\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4011, __PRETTY_FUNCTION__)); | ||||||||||||
4012 | RParen = argPtr; // output the end | ||||||||||||
4013 | } | ||||||||||||
4014 | |||||||||||||
4015 | void RewriteObjC::RewriteBlockPointerDecl(NamedDecl *ND) { | ||||||||||||
4016 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) { | ||||||||||||
4017 | RewriteBlockPointerFunctionArgs(FD); | ||||||||||||
4018 | return; | ||||||||||||
4019 | } | ||||||||||||
4020 | // Handle Variables and Typedefs. | ||||||||||||
4021 | SourceLocation DeclLoc = ND->getLocation(); | ||||||||||||
4022 | QualType DeclT; | ||||||||||||
4023 | if (VarDecl *VD = dyn_cast<VarDecl>(ND)) | ||||||||||||
4024 | DeclT = VD->getType(); | ||||||||||||
4025 | else if (TypedefNameDecl *TDD = dyn_cast<TypedefNameDecl>(ND)) | ||||||||||||
4026 | DeclT = TDD->getUnderlyingType(); | ||||||||||||
4027 | else if (FieldDecl *FD = dyn_cast<FieldDecl>(ND)) | ||||||||||||
4028 | DeclT = FD->getType(); | ||||||||||||
4029 | else | ||||||||||||
4030 | llvm_unreachable("RewriteBlockPointerDecl(): Decl type not yet handled")::llvm::llvm_unreachable_internal("RewriteBlockPointerDecl(): Decl type not yet handled" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4030); | ||||||||||||
4031 | |||||||||||||
4032 | const char *startBuf = SM->getCharacterData(DeclLoc); | ||||||||||||
4033 | const char *endBuf = startBuf; | ||||||||||||
4034 | // scan backward (from the decl location) for the end of the previous decl. | ||||||||||||
4035 | while (*startBuf != '^' && *startBuf != ';' && startBuf != MainFileStart) | ||||||||||||
4036 | startBuf--; | ||||||||||||
4037 | SourceLocation Start = DeclLoc.getLocWithOffset(startBuf-endBuf); | ||||||||||||
4038 | std::string buf; | ||||||||||||
4039 | unsigned OrigLength=0; | ||||||||||||
4040 | // *startBuf != '^' if we are dealing with a pointer to function that | ||||||||||||
4041 | // may take block argument types (which will be handled below). | ||||||||||||
4042 | if (*startBuf == '^') { | ||||||||||||
4043 | // Replace the '^' with '*', computing a negative offset. | ||||||||||||
4044 | buf = '*'; | ||||||||||||
4045 | startBuf++; | ||||||||||||
4046 | OrigLength++; | ||||||||||||
4047 | } | ||||||||||||
4048 | while (*startBuf != ')') { | ||||||||||||
4049 | buf += *startBuf; | ||||||||||||
4050 | startBuf++; | ||||||||||||
4051 | OrigLength++; | ||||||||||||
4052 | } | ||||||||||||
4053 | buf += ')'; | ||||||||||||
4054 | OrigLength++; | ||||||||||||
4055 | |||||||||||||
4056 | if (PointerTypeTakesAnyBlockArguments(DeclT) || | ||||||||||||
4057 | PointerTypeTakesAnyObjCQualifiedType(DeclT)) { | ||||||||||||
4058 | // Replace the '^' with '*' for arguments. | ||||||||||||
4059 | // Replace id<P> with id/*<>*/ | ||||||||||||
4060 | DeclLoc = ND->getLocation(); | ||||||||||||
4061 | startBuf = SM->getCharacterData(DeclLoc); | ||||||||||||
4062 | const char *argListBegin, *argListEnd; | ||||||||||||
4063 | GetExtentOfArgList(startBuf, argListBegin, argListEnd); | ||||||||||||
4064 | while (argListBegin < argListEnd) { | ||||||||||||
4065 | if (*argListBegin == '^') | ||||||||||||
4066 | buf += '*'; | ||||||||||||
4067 | else if (*argListBegin == '<') { | ||||||||||||
4068 | buf += "/*"; | ||||||||||||
4069 | buf += *argListBegin++; | ||||||||||||
4070 | OrigLength++; | ||||||||||||
4071 | while (*argListBegin != '>') { | ||||||||||||
4072 | buf += *argListBegin++; | ||||||||||||
4073 | OrigLength++; | ||||||||||||
4074 | } | ||||||||||||
4075 | buf += *argListBegin; | ||||||||||||
4076 | buf += "*/"; | ||||||||||||
4077 | } | ||||||||||||
4078 | else | ||||||||||||
4079 | buf += *argListBegin; | ||||||||||||
4080 | argListBegin++; | ||||||||||||
4081 | OrigLength++; | ||||||||||||
4082 | } | ||||||||||||
4083 | buf += ')'; | ||||||||||||
4084 | OrigLength++; | ||||||||||||
4085 | } | ||||||||||||
4086 | ReplaceText(Start, OrigLength, buf); | ||||||||||||
4087 | } | ||||||||||||
4088 | |||||||||||||
4089 | /// SynthesizeByrefCopyDestroyHelper - This routine synthesizes: | ||||||||||||
4090 | /// void __Block_byref_id_object_copy(struct Block_byref_id_object *dst, | ||||||||||||
4091 | /// struct Block_byref_id_object *src) { | ||||||||||||
4092 | /// _Block_object_assign (&_dest->object, _src->object, | ||||||||||||
4093 | /// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT | ||||||||||||
4094 | /// [|BLOCK_FIELD_IS_WEAK]) // object | ||||||||||||
4095 | /// _Block_object_assign(&_dest->object, _src->object, | ||||||||||||
4096 | /// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK | ||||||||||||
4097 | /// [|BLOCK_FIELD_IS_WEAK]) // block | ||||||||||||
4098 | /// } | ||||||||||||
4099 | /// And: | ||||||||||||
4100 | /// void __Block_byref_id_object_dispose(struct Block_byref_id_object *_src) { | ||||||||||||
4101 | /// _Block_object_dispose(_src->object, | ||||||||||||
4102 | /// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT | ||||||||||||
4103 | /// [|BLOCK_FIELD_IS_WEAK]) // object | ||||||||||||
4104 | /// _Block_object_dispose(_src->object, | ||||||||||||
4105 | /// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK | ||||||||||||
4106 | /// [|BLOCK_FIELD_IS_WEAK]) // block | ||||||||||||
4107 | /// } | ||||||||||||
4108 | |||||||||||||
4109 | std::string RewriteObjC::SynthesizeByrefCopyDestroyHelper(VarDecl *VD, | ||||||||||||
4110 | int flag) { | ||||||||||||
4111 | std::string S; | ||||||||||||
4112 | if (CopyDestroyCache.count(flag)) | ||||||||||||
4113 | return S; | ||||||||||||
4114 | CopyDestroyCache.insert(flag); | ||||||||||||
4115 | S = "static void __Block_byref_id_object_copy_"; | ||||||||||||
4116 | S += utostr(flag); | ||||||||||||
4117 | S += "(void *dst, void *src) {\n"; | ||||||||||||
4118 | |||||||||||||
4119 | // offset into the object pointer is computed as: | ||||||||||||
4120 | // void * + void* + int + int + void* + void * | ||||||||||||
4121 | unsigned IntSize = | ||||||||||||
4122 | static_cast<unsigned>(Context->getTypeSize(Context->IntTy)); | ||||||||||||
4123 | unsigned VoidPtrSize = | ||||||||||||
4124 | static_cast<unsigned>(Context->getTypeSize(Context->VoidPtrTy)); | ||||||||||||
4125 | |||||||||||||
4126 | unsigned offset = (VoidPtrSize*4 + IntSize + IntSize)/Context->getCharWidth(); | ||||||||||||
4127 | S += " _Block_object_assign((char*)dst + "; | ||||||||||||
4128 | S += utostr(offset); | ||||||||||||
4129 | S += ", *(void * *) ((char*)src + "; | ||||||||||||
4130 | S += utostr(offset); | ||||||||||||
4131 | S += "), "; | ||||||||||||
4132 | S += utostr(flag); | ||||||||||||
4133 | S += ");\n}\n"; | ||||||||||||
4134 | |||||||||||||
4135 | S += "static void __Block_byref_id_object_dispose_"; | ||||||||||||
4136 | S += utostr(flag); | ||||||||||||
4137 | S += "(void *src) {\n"; | ||||||||||||
4138 | S += " _Block_object_dispose(*(void * *) ((char*)src + "; | ||||||||||||
4139 | S += utostr(offset); | ||||||||||||
4140 | S += "), "; | ||||||||||||
4141 | S += utostr(flag); | ||||||||||||
4142 | S += ");\n}\n"; | ||||||||||||
4143 | return S; | ||||||||||||
4144 | } | ||||||||||||
4145 | |||||||||||||
4146 | /// RewriteByRefVar - For each __block typex ND variable this routine transforms | ||||||||||||
4147 | /// the declaration into: | ||||||||||||
4148 | /// struct __Block_byref_ND { | ||||||||||||
4149 | /// void *__isa; // NULL for everything except __weak pointers | ||||||||||||
4150 | /// struct __Block_byref_ND *__forwarding; | ||||||||||||
4151 | /// int32_t __flags; | ||||||||||||
4152 | /// int32_t __size; | ||||||||||||
4153 | /// void *__Block_byref_id_object_copy; // If variable is __block ObjC object | ||||||||||||
4154 | /// void *__Block_byref_id_object_dispose; // If variable is __block ObjC object | ||||||||||||
4155 | /// typex ND; | ||||||||||||
4156 | /// }; | ||||||||||||
4157 | /// | ||||||||||||
4158 | /// It then replaces declaration of ND variable with: | ||||||||||||
4159 | /// struct __Block_byref_ND ND = {__isa=0B, __forwarding=&ND, __flags=some_flag, | ||||||||||||
4160 | /// __size=sizeof(struct __Block_byref_ND), | ||||||||||||
4161 | /// ND=initializer-if-any}; | ||||||||||||
4162 | /// | ||||||||||||
4163 | /// | ||||||||||||
4164 | void RewriteObjC::RewriteByRefVar(VarDecl *ND) { | ||||||||||||
4165 | // Insert declaration for the function in which block literal is | ||||||||||||
4166 | // used. | ||||||||||||
4167 | if (CurFunctionDeclToDeclareForBlock) | ||||||||||||
4168 | RewriteBlockLiteralFunctionDecl(CurFunctionDeclToDeclareForBlock); | ||||||||||||
4169 | int flag = 0; | ||||||||||||
4170 | int isa = 0; | ||||||||||||
4171 | SourceLocation DeclLoc = ND->getTypeSpecStartLoc(); | ||||||||||||
4172 | if (DeclLoc.isInvalid()) | ||||||||||||
4173 | // If type location is missing, it is because of missing type (a warning). | ||||||||||||
4174 | // Use variable's location which is good for this case. | ||||||||||||
4175 | DeclLoc = ND->getLocation(); | ||||||||||||
4176 | const char *startBuf = SM->getCharacterData(DeclLoc); | ||||||||||||
4177 | SourceLocation X = ND->getEndLoc(); | ||||||||||||
4178 | X = SM->getExpansionLoc(X); | ||||||||||||
4179 | const char *endBuf = SM->getCharacterData(X); | ||||||||||||
4180 | std::string Name(ND->getNameAsString()); | ||||||||||||
4181 | std::string ByrefType; | ||||||||||||
4182 | RewriteByRefString(ByrefType, Name, ND, true); | ||||||||||||
4183 | ByrefType += " {\n"; | ||||||||||||
4184 | ByrefType += " void *__isa;\n"; | ||||||||||||
4185 | RewriteByRefString(ByrefType, Name, ND); | ||||||||||||
4186 | ByrefType += " *__forwarding;\n"; | ||||||||||||
4187 | ByrefType += " int __flags;\n"; | ||||||||||||
4188 | ByrefType += " int __size;\n"; | ||||||||||||
4189 | // Add void *__Block_byref_id_object_copy; | ||||||||||||
4190 | // void *__Block_byref_id_object_dispose; if needed. | ||||||||||||
4191 | QualType Ty = ND->getType(); | ||||||||||||
4192 | bool HasCopyAndDispose = Context->BlockRequiresCopying(Ty, ND); | ||||||||||||
4193 | if (HasCopyAndDispose) { | ||||||||||||
4194 | ByrefType += " void (*__Block_byref_id_object_copy)(void*, void*);\n"; | ||||||||||||
4195 | ByrefType += " void (*__Block_byref_id_object_dispose)(void*);\n"; | ||||||||||||
4196 | } | ||||||||||||
4197 | |||||||||||||
4198 | QualType T = Ty; | ||||||||||||
4199 | (void)convertBlockPointerToFunctionPointer(T); | ||||||||||||
4200 | T.getAsStringInternal(Name, Context->getPrintingPolicy()); | ||||||||||||
4201 | |||||||||||||
4202 | ByrefType += " " + Name + ";\n"; | ||||||||||||
4203 | ByrefType += "};\n"; | ||||||||||||
4204 | // Insert this type in global scope. It is needed by helper function. | ||||||||||||
4205 | SourceLocation FunLocStart; | ||||||||||||
4206 | if (CurFunctionDef) | ||||||||||||
4207 | FunLocStart = CurFunctionDef->getTypeSpecStartLoc(); | ||||||||||||
4208 | else { | ||||||||||||
4209 | assert(CurMethodDef && "RewriteByRefVar - CurMethodDef is null")((CurMethodDef && "RewriteByRefVar - CurMethodDef is null" ) ? static_cast<void> (0) : __assert_fail ("CurMethodDef && \"RewriteByRefVar - CurMethodDef is null\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4209, __PRETTY_FUNCTION__)); | ||||||||||||
4210 | FunLocStart = CurMethodDef->getBeginLoc(); | ||||||||||||
4211 | } | ||||||||||||
4212 | InsertText(FunLocStart, ByrefType); | ||||||||||||
4213 | if (Ty.isObjCGCWeak()) { | ||||||||||||
4214 | flag |= BLOCK_FIELD_IS_WEAK; | ||||||||||||
4215 | isa = 1; | ||||||||||||
4216 | } | ||||||||||||
4217 | |||||||||||||
4218 | if (HasCopyAndDispose) { | ||||||||||||
4219 | flag = BLOCK_BYREF_CALLER; | ||||||||||||
4220 | QualType Ty = ND->getType(); | ||||||||||||
4221 | // FIXME. Handle __weak variable (BLOCK_FIELD_IS_WEAK) as well. | ||||||||||||
4222 | if (Ty->isBlockPointerType()) | ||||||||||||
4223 | flag |= BLOCK_FIELD_IS_BLOCK; | ||||||||||||
4224 | else | ||||||||||||
4225 | flag |= BLOCK_FIELD_IS_OBJECT; | ||||||||||||
4226 | std::string HF = SynthesizeByrefCopyDestroyHelper(ND, flag); | ||||||||||||
4227 | if (!HF.empty()) | ||||||||||||
4228 | InsertText(FunLocStart, HF); | ||||||||||||
4229 | } | ||||||||||||
4230 | |||||||||||||
4231 | // struct __Block_byref_ND ND = | ||||||||||||
4232 | // {0, &ND, some_flag, __size=sizeof(struct __Block_byref_ND), | ||||||||||||
4233 | // initializer-if-any}; | ||||||||||||
4234 | bool hasInit = (ND->getInit() != nullptr); | ||||||||||||
4235 | unsigned flags = 0; | ||||||||||||
4236 | if (HasCopyAndDispose) | ||||||||||||
4237 | flags |= BLOCK_HAS_COPY_DISPOSE; | ||||||||||||
4238 | Name = ND->getNameAsString(); | ||||||||||||
4239 | ByrefType.clear(); | ||||||||||||
4240 | RewriteByRefString(ByrefType, Name, ND); | ||||||||||||
4241 | std::string ForwardingCastType("("); | ||||||||||||
4242 | ForwardingCastType += ByrefType + " *)"; | ||||||||||||
4243 | if (!hasInit) { | ||||||||||||
4244 | ByrefType += " " + Name + " = {(void*)"; | ||||||||||||
4245 | ByrefType += utostr(isa); | ||||||||||||
4246 | ByrefType += "," + ForwardingCastType + "&" + Name + ", "; | ||||||||||||
4247 | ByrefType += utostr(flags); | ||||||||||||
4248 | ByrefType += ", "; | ||||||||||||
4249 | ByrefType += "sizeof("; | ||||||||||||
4250 | RewriteByRefString(ByrefType, Name, ND); | ||||||||||||
4251 | ByrefType += ")"; | ||||||||||||
4252 | if (HasCopyAndDispose) { | ||||||||||||
4253 | ByrefType += ", __Block_byref_id_object_copy_"; | ||||||||||||
4254 | ByrefType += utostr(flag); | ||||||||||||
4255 | ByrefType += ", __Block_byref_id_object_dispose_"; | ||||||||||||
4256 | ByrefType += utostr(flag); | ||||||||||||
4257 | } | ||||||||||||
4258 | ByrefType += "};\n"; | ||||||||||||
4259 | unsigned nameSize = Name.size(); | ||||||||||||
4260 | // for block or function pointer declaration. Name is already | ||||||||||||
4261 | // part of the declaration. | ||||||||||||
4262 | if (Ty->isBlockPointerType() || Ty->isFunctionPointerType()) | ||||||||||||
4263 | nameSize = 1; | ||||||||||||
4264 | ReplaceText(DeclLoc, endBuf-startBuf+nameSize, ByrefType); | ||||||||||||
4265 | } | ||||||||||||
4266 | else { | ||||||||||||
4267 | SourceLocation startLoc; | ||||||||||||
4268 | Expr *E = ND->getInit(); | ||||||||||||
4269 | if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) | ||||||||||||
4270 | startLoc = ECE->getLParenLoc(); | ||||||||||||
4271 | else | ||||||||||||
4272 | startLoc = E->getBeginLoc(); | ||||||||||||
4273 | startLoc = SM->getExpansionLoc(startLoc); | ||||||||||||
4274 | endBuf = SM->getCharacterData(startLoc); | ||||||||||||
4275 | ByrefType += " " + Name; | ||||||||||||
4276 | ByrefType += " = {(void*)"; | ||||||||||||
4277 | ByrefType += utostr(isa); | ||||||||||||
4278 | ByrefType += "," + ForwardingCastType + "&" + Name + ", "; | ||||||||||||
4279 | ByrefType += utostr(flags); | ||||||||||||
4280 | ByrefType += ", "; | ||||||||||||
4281 | ByrefType += "sizeof("; | ||||||||||||
4282 | RewriteByRefString(ByrefType, Name, ND); | ||||||||||||
4283 | ByrefType += "), "; | ||||||||||||
4284 | if (HasCopyAndDispose) { | ||||||||||||
4285 | ByrefType += "__Block_byref_id_object_copy_"; | ||||||||||||
4286 | ByrefType += utostr(flag); | ||||||||||||
4287 | ByrefType += ", __Block_byref_id_object_dispose_"; | ||||||||||||
4288 | ByrefType += utostr(flag); | ||||||||||||
4289 | ByrefType += ", "; | ||||||||||||
4290 | } | ||||||||||||
4291 | ReplaceText(DeclLoc, endBuf-startBuf, ByrefType); | ||||||||||||
4292 | |||||||||||||
4293 | // Complete the newly synthesized compound expression by inserting a right | ||||||||||||
4294 | // curly brace before the end of the declaration. | ||||||||||||
4295 | // FIXME: This approach avoids rewriting the initializer expression. It | ||||||||||||
4296 | // also assumes there is only one declarator. For example, the following | ||||||||||||
4297 | // isn't currently supported by this routine (in general): | ||||||||||||
4298 | // | ||||||||||||
4299 | // double __block BYREFVAR = 1.34, BYREFVAR2 = 1.37; | ||||||||||||
4300 | // | ||||||||||||
4301 | const char *startInitializerBuf = SM->getCharacterData(startLoc); | ||||||||||||
4302 | const char *semiBuf = strchr(startInitializerBuf, ';'); | ||||||||||||
4303 | assert((*semiBuf == ';') && "RewriteByRefVar: can't find ';'")(((*semiBuf == ';') && "RewriteByRefVar: can't find ';'" ) ? static_cast<void> (0) : __assert_fail ("(*semiBuf == ';') && \"RewriteByRefVar: can't find ';'\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4303, __PRETTY_FUNCTION__)); | ||||||||||||
4304 | SourceLocation semiLoc = | ||||||||||||
4305 | startLoc.getLocWithOffset(semiBuf-startInitializerBuf); | ||||||||||||
4306 | |||||||||||||
4307 | InsertText(semiLoc, "}"); | ||||||||||||
4308 | } | ||||||||||||
4309 | } | ||||||||||||
4310 | |||||||||||||
4311 | void RewriteObjC::CollectBlockDeclRefInfo(BlockExpr *Exp) { | ||||||||||||
4312 | // Add initializers for any closure decl refs. | ||||||||||||
4313 | GetBlockDeclRefExprs(Exp->getBody()); | ||||||||||||
4314 | if (BlockDeclRefs.size()) { | ||||||||||||
4315 | // Unique all "by copy" declarations. | ||||||||||||
4316 | for (unsigned i = 0; i < BlockDeclRefs.size(); i++) | ||||||||||||
4317 | if (!BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) { | ||||||||||||
4318 | if (!BlockByCopyDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) { | ||||||||||||
4319 | BlockByCopyDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl()); | ||||||||||||
4320 | BlockByCopyDecls.push_back(BlockDeclRefs[i]->getDecl()); | ||||||||||||
4321 | } | ||||||||||||
4322 | } | ||||||||||||
4323 | // Unique all "by ref" declarations. | ||||||||||||
4324 | for (unsigned i = 0; i < BlockDeclRefs.size(); i++) | ||||||||||||
4325 | if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) { | ||||||||||||
4326 | if (!BlockByRefDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) { | ||||||||||||
4327 | BlockByRefDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl()); | ||||||||||||
4328 | BlockByRefDecls.push_back(BlockDeclRefs[i]->getDecl()); | ||||||||||||
4329 | } | ||||||||||||
4330 | } | ||||||||||||
4331 | // Find any imported blocks...they will need special attention. | ||||||||||||
4332 | for (unsigned i = 0; i < BlockDeclRefs.size(); i++) | ||||||||||||
4333 | if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() || | ||||||||||||
4334 | BlockDeclRefs[i]->getType()->isObjCObjectPointerType() || | ||||||||||||
4335 | BlockDeclRefs[i]->getType()->isBlockPointerType()) | ||||||||||||
4336 | ImportedBlockDecls.insert(BlockDeclRefs[i]->getDecl()); | ||||||||||||
4337 | } | ||||||||||||
4338 | } | ||||||||||||
4339 | |||||||||||||
4340 | FunctionDecl *RewriteObjC::SynthBlockInitFunctionDecl(StringRef name) { | ||||||||||||
4341 | IdentifierInfo *ID = &Context->Idents.get(name); | ||||||||||||
4342 | QualType FType = Context->getFunctionNoProtoType(Context->VoidPtrTy); | ||||||||||||
4343 | return FunctionDecl::Create(*Context, TUDecl, SourceLocation(), | ||||||||||||
4344 | SourceLocation(), ID, FType, nullptr, SC_Extern, | ||||||||||||
4345 | false, false); | ||||||||||||
4346 | } | ||||||||||||
4347 | |||||||||||||
4348 | Stmt *RewriteObjC::SynthBlockInitExpr(BlockExpr *Exp, | ||||||||||||
4349 | const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs) { | ||||||||||||
4350 | const BlockDecl *block = Exp->getBlockDecl(); | ||||||||||||
4351 | Blocks.push_back(Exp); | ||||||||||||
4352 | |||||||||||||
4353 | CollectBlockDeclRefInfo(Exp); | ||||||||||||
4354 | |||||||||||||
4355 | // Add inner imported variables now used in current block. | ||||||||||||
4356 | int countOfInnerDecls = 0; | ||||||||||||
4357 | if (!InnerBlockDeclRefs.empty()) { | ||||||||||||
4358 | for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++) { | ||||||||||||
4359 | DeclRefExpr *Exp = InnerBlockDeclRefs[i]; | ||||||||||||
4360 | ValueDecl *VD = Exp->getDecl(); | ||||||||||||
4361 | if (!VD->hasAttr<BlocksAttr>() && !BlockByCopyDeclsPtrSet.count(VD)) { | ||||||||||||
4362 | // We need to save the copied-in variables in nested | ||||||||||||
4363 | // blocks because it is needed at the end for some of the API generations. | ||||||||||||
4364 | // See SynthesizeBlockLiterals routine. | ||||||||||||
4365 | InnerDeclRefs.push_back(Exp); countOfInnerDecls++; | ||||||||||||
4366 | BlockDeclRefs.push_back(Exp); | ||||||||||||
4367 | BlockByCopyDeclsPtrSet.insert(VD); | ||||||||||||
4368 | BlockByCopyDecls.push_back(VD); | ||||||||||||
4369 | } | ||||||||||||
4370 | if (VD->hasAttr<BlocksAttr>() && !BlockByRefDeclsPtrSet.count(VD)) { | ||||||||||||
4371 | InnerDeclRefs.push_back(Exp); countOfInnerDecls++; | ||||||||||||
4372 | BlockDeclRefs.push_back(Exp); | ||||||||||||
4373 | BlockByRefDeclsPtrSet.insert(VD); | ||||||||||||
4374 | BlockByRefDecls.push_back(VD); | ||||||||||||
4375 | } | ||||||||||||
4376 | } | ||||||||||||
4377 | // Find any imported blocks...they will need special attention. | ||||||||||||
4378 | for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++) | ||||||||||||
4379 | if (InnerBlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() || | ||||||||||||
4380 | InnerBlockDeclRefs[i]->getType()->isObjCObjectPointerType() || | ||||||||||||
4381 | InnerBlockDeclRefs[i]->getType()->isBlockPointerType()) | ||||||||||||
4382 | ImportedBlockDecls.insert(InnerBlockDeclRefs[i]->getDecl()); | ||||||||||||
4383 | } | ||||||||||||
4384 | InnerDeclRefsCount.push_back(countOfInnerDecls); | ||||||||||||
4385 | |||||||||||||
4386 | std::string FuncName; | ||||||||||||
4387 | |||||||||||||
4388 | if (CurFunctionDef) | ||||||||||||
4389 | FuncName = CurFunctionDef->getNameAsString(); | ||||||||||||
4390 | else if (CurMethodDef) | ||||||||||||
4391 | BuildUniqueMethodName(FuncName, CurMethodDef); | ||||||||||||
4392 | else if (GlobalVarDecl) | ||||||||||||
4393 | FuncName = std::string(GlobalVarDecl->getNameAsString()); | ||||||||||||
4394 | |||||||||||||
4395 | std::string BlockNumber = utostr(Blocks.size()-1); | ||||||||||||
4396 | |||||||||||||
4397 | std::string Tag = "__" + FuncName + "_block_impl_" + BlockNumber; | ||||||||||||
4398 | std::string Func = "__" + FuncName + "_block_func_" + BlockNumber; | ||||||||||||
4399 | |||||||||||||
4400 | // Get a pointer to the function type so we can cast appropriately. | ||||||||||||
4401 | QualType BFT = convertFunctionTypeOfBlocks(Exp->getFunctionType()); | ||||||||||||
4402 | QualType FType = Context->getPointerType(BFT); | ||||||||||||
4403 | |||||||||||||
4404 | FunctionDecl *FD; | ||||||||||||
4405 | Expr *NewRep; | ||||||||||||
4406 | |||||||||||||
4407 | // Simulate a constructor call... | ||||||||||||
4408 | FD = SynthBlockInitFunctionDecl(Tag); | ||||||||||||
4409 | DeclRefExpr *DRE = new (Context) | ||||||||||||
4410 | DeclRefExpr(*Context, FD, false, FType, VK_RValue, SourceLocation()); | ||||||||||||
4411 | |||||||||||||
4412 | SmallVector<Expr*, 4> InitExprs; | ||||||||||||
4413 | |||||||||||||
4414 | // Initialize the block function. | ||||||||||||
4415 | FD = SynthBlockInitFunctionDecl(Func); | ||||||||||||
4416 | DeclRefExpr *Arg = new (Context) DeclRefExpr( | ||||||||||||
4417 | *Context, FD, false, FD->getType(), VK_LValue, SourceLocation()); | ||||||||||||
4418 | CastExpr *castExpr = | ||||||||||||
4419 | NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy, CK_BitCast, Arg); | ||||||||||||
4420 | InitExprs.push_back(castExpr); | ||||||||||||
4421 | |||||||||||||
4422 | // Initialize the block descriptor. | ||||||||||||
4423 | std::string DescData = "__" + FuncName + "_block_desc_" + BlockNumber + "_DATA"; | ||||||||||||
4424 | |||||||||||||
4425 | VarDecl *NewVD = VarDecl::Create( | ||||||||||||
4426 | *Context, TUDecl, SourceLocation(), SourceLocation(), | ||||||||||||
4427 | &Context->Idents.get(DescData), Context->VoidPtrTy, nullptr, SC_Static); | ||||||||||||
4428 | UnaryOperator *DescRefExpr = new (Context) UnaryOperator( | ||||||||||||
4429 | new (Context) DeclRefExpr(*Context, NewVD, false, Context->VoidPtrTy, | ||||||||||||
4430 | VK_LValue, SourceLocation()), | ||||||||||||
4431 | UO_AddrOf, Context->getPointerType(Context->VoidPtrTy), VK_RValue, | ||||||||||||
4432 | OK_Ordinary, SourceLocation(), false); | ||||||||||||
4433 | InitExprs.push_back(DescRefExpr); | ||||||||||||
4434 | |||||||||||||
4435 | // Add initializers for any closure decl refs. | ||||||||||||
4436 | if (BlockDeclRefs.size()) { | ||||||||||||
4437 | Expr *Exp; | ||||||||||||
4438 | // Output all "by copy" declarations. | ||||||||||||
4439 | for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(), | ||||||||||||
4440 | E = BlockByCopyDecls.end(); I != E; ++I) { | ||||||||||||
4441 | if (isObjCType((*I)->getType())) { | ||||||||||||
4442 | // FIXME: Conform to ABI ([[obj retain] autorelease]). | ||||||||||||
4443 | FD = SynthBlockInitFunctionDecl((*I)->getName()); | ||||||||||||
4444 | Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(), | ||||||||||||
4445 | VK_LValue, SourceLocation()); | ||||||||||||
4446 | if (HasLocalVariableExternalStorage(*I)) { | ||||||||||||
4447 | QualType QT = (*I)->getType(); | ||||||||||||
4448 | QT = Context->getPointerType(QT); | ||||||||||||
4449 | Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue, | ||||||||||||
4450 | OK_Ordinary, SourceLocation(), | ||||||||||||
4451 | false); | ||||||||||||
4452 | } | ||||||||||||
4453 | } else if (isTopLevelBlockPointerType((*I)->getType())) { | ||||||||||||
4454 | FD = SynthBlockInitFunctionDecl((*I)->getName()); | ||||||||||||
4455 | Arg = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(), | ||||||||||||
4456 | VK_LValue, SourceLocation()); | ||||||||||||
4457 | Exp = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy, CK_BitCast, | ||||||||||||
4458 | Arg); | ||||||||||||
4459 | } else { | ||||||||||||
4460 | FD = SynthBlockInitFunctionDecl((*I)->getName()); | ||||||||||||
4461 | Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(), | ||||||||||||
4462 | VK_LValue, SourceLocation()); | ||||||||||||
4463 | if (HasLocalVariableExternalStorage(*I)) { | ||||||||||||
4464 | QualType QT = (*I)->getType(); | ||||||||||||
4465 | QT = Context->getPointerType(QT); | ||||||||||||
4466 | Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue, | ||||||||||||
4467 | OK_Ordinary, SourceLocation(), | ||||||||||||
4468 | false); | ||||||||||||
4469 | } | ||||||||||||
4470 | } | ||||||||||||
4471 | InitExprs.push_back(Exp); | ||||||||||||
4472 | } | ||||||||||||
4473 | // Output all "by ref" declarations. | ||||||||||||
4474 | for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(), | ||||||||||||
4475 | E = BlockByRefDecls.end(); I != E; ++I) { | ||||||||||||
4476 | ValueDecl *ND = (*I); | ||||||||||||
4477 | std::string Name(ND->getNameAsString()); | ||||||||||||
4478 | std::string RecName; | ||||||||||||
4479 | RewriteByRefString(RecName, Name, ND, true); | ||||||||||||
4480 | IdentifierInfo *II = &Context->Idents.get(RecName.c_str() | ||||||||||||
4481 | + sizeof("struct")); | ||||||||||||
4482 | RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl, | ||||||||||||
4483 | SourceLocation(), SourceLocation(), | ||||||||||||
4484 | II); | ||||||||||||
4485 | assert(RD && "SynthBlockInitExpr(): Can't find RecordDecl")((RD && "SynthBlockInitExpr(): Can't find RecordDecl" ) ? static_cast<void> (0) : __assert_fail ("RD && \"SynthBlockInitExpr(): Can't find RecordDecl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4485, __PRETTY_FUNCTION__)); | ||||||||||||
4486 | QualType castT = Context->getPointerType(Context->getTagDeclType(RD)); | ||||||||||||
4487 | |||||||||||||
4488 | FD = SynthBlockInitFunctionDecl((*I)->getName()); | ||||||||||||
4489 | Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(), | ||||||||||||
4490 | VK_LValue, SourceLocation()); | ||||||||||||
4491 | bool isNestedCapturedVar = false; | ||||||||||||
4492 | if (block) | ||||||||||||
4493 | for (const auto &CI : block->captures()) { | ||||||||||||
4494 | const VarDecl *variable = CI.getVariable(); | ||||||||||||
4495 | if (variable == ND && CI.isNested()) { | ||||||||||||
4496 | assert (CI.isByRef() &&((CI.isByRef() && "SynthBlockInitExpr - captured block variable is not byref" ) ? static_cast<void> (0) : __assert_fail ("CI.isByRef() && \"SynthBlockInitExpr - captured block variable is not byref\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4497, __PRETTY_FUNCTION__)) | ||||||||||||
4497 | "SynthBlockInitExpr - captured block variable is not byref")((CI.isByRef() && "SynthBlockInitExpr - captured block variable is not byref" ) ? static_cast<void> (0) : __assert_fail ("CI.isByRef() && \"SynthBlockInitExpr - captured block variable is not byref\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4497, __PRETTY_FUNCTION__)); | ||||||||||||
4498 | isNestedCapturedVar = true; | ||||||||||||
4499 | break; | ||||||||||||
4500 | } | ||||||||||||
4501 | } | ||||||||||||
4502 | // captured nested byref variable has its address passed. Do not take | ||||||||||||
4503 | // its address again. | ||||||||||||
4504 | if (!isNestedCapturedVar) | ||||||||||||
4505 | Exp = new (Context) UnaryOperator( | ||||||||||||
4506 | Exp, UO_AddrOf, Context->getPointerType(Exp->getType()), VK_RValue, | ||||||||||||
4507 | OK_Ordinary, SourceLocation(), false); | ||||||||||||
4508 | Exp = NoTypeInfoCStyleCastExpr(Context, castT, CK_BitCast, Exp); | ||||||||||||
4509 | InitExprs.push_back(Exp); | ||||||||||||
4510 | } | ||||||||||||
4511 | } | ||||||||||||
4512 | if (ImportedBlockDecls.size()) { | ||||||||||||
4513 | // generate BLOCK_HAS_COPY_DISPOSE(have helper funcs) | BLOCK_HAS_DESCRIPTOR | ||||||||||||
4514 | int flag = (BLOCK_HAS_COPY_DISPOSE | BLOCK_HAS_DESCRIPTOR); | ||||||||||||
4515 | unsigned IntSize = | ||||||||||||
4516 | static_cast<unsigned>(Context->getTypeSize(Context->IntTy)); | ||||||||||||
4517 | Expr *FlagExp = IntegerLiteral::Create(*Context, llvm::APInt(IntSize, flag), | ||||||||||||
4518 | Context->IntTy, SourceLocation()); | ||||||||||||
4519 | InitExprs.push_back(FlagExp); | ||||||||||||
4520 | } | ||||||||||||
4521 | NewRep = CallExpr::Create(*Context, DRE, InitExprs, FType, VK_LValue, | ||||||||||||
4522 | SourceLocation()); | ||||||||||||
4523 | NewRep = new (Context) UnaryOperator( | ||||||||||||
4524 | NewRep, UO_AddrOf, Context->getPointerType(NewRep->getType()), VK_RValue, | ||||||||||||
4525 | OK_Ordinary, SourceLocation(), false); | ||||||||||||
4526 | NewRep = NoTypeInfoCStyleCastExpr(Context, FType, CK_BitCast, | ||||||||||||
4527 | NewRep); | ||||||||||||
4528 | BlockDeclRefs.clear(); | ||||||||||||
4529 | BlockByRefDecls.clear(); | ||||||||||||
4530 | BlockByRefDeclsPtrSet.clear(); | ||||||||||||
4531 | BlockByCopyDecls.clear(); | ||||||||||||
4532 | BlockByCopyDeclsPtrSet.clear(); | ||||||||||||
4533 | ImportedBlockDecls.clear(); | ||||||||||||
4534 | return NewRep; | ||||||||||||
4535 | } | ||||||||||||
4536 | |||||||||||||
4537 | bool RewriteObjC::IsDeclStmtInForeachHeader(DeclStmt *DS) { | ||||||||||||
4538 | if (const ObjCForCollectionStmt * CS = | ||||||||||||
4539 | dyn_cast<ObjCForCollectionStmt>(Stmts.back())) | ||||||||||||
4540 | return CS->getElement() == DS; | ||||||||||||
4541 | return false; | ||||||||||||
4542 | } | ||||||||||||
4543 | |||||||||||||
4544 | //===----------------------------------------------------------------------===// | ||||||||||||
4545 | // Function Body / Expression rewriting | ||||||||||||
4546 | //===----------------------------------------------------------------------===// | ||||||||||||
4547 | |||||||||||||
4548 | Stmt *RewriteObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) { | ||||||||||||
4549 | if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) || | ||||||||||||
4550 | isa<DoStmt>(S) || isa<ForStmt>(S)) | ||||||||||||
4551 | Stmts.push_back(S); | ||||||||||||
4552 | else if (isa<ObjCForCollectionStmt>(S)) { | ||||||||||||
4553 | Stmts.push_back(S); | ||||||||||||
4554 | ObjCBcLabelNo.push_back(++BcLabelCount); | ||||||||||||
4555 | } | ||||||||||||
4556 | |||||||||||||
4557 | // Pseudo-object operations and ivar references need special | ||||||||||||
4558 | // treatment because we're going to recursively rewrite them. | ||||||||||||
4559 | if (PseudoObjectExpr *PseudoOp = dyn_cast<PseudoObjectExpr>(S)) { | ||||||||||||
4560 | if (isa<BinaryOperator>(PseudoOp->getSyntacticForm())) { | ||||||||||||
4561 | return RewritePropertyOrImplicitSetter(PseudoOp); | ||||||||||||
4562 | } else { | ||||||||||||
4563 | return RewritePropertyOrImplicitGetter(PseudoOp); | ||||||||||||
4564 | } | ||||||||||||
4565 | } else if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S)) { | ||||||||||||
4566 | return RewriteObjCIvarRefExpr(IvarRefExpr); | ||||||||||||
4567 | } | ||||||||||||
4568 | |||||||||||||
4569 | SourceRange OrigStmtRange = S->getSourceRange(); | ||||||||||||
4570 | |||||||||||||
4571 | // Perform a bottom up rewrite of all children. | ||||||||||||
4572 | for (Stmt *&childStmt : S->children()) | ||||||||||||
4573 | if (childStmt) { | ||||||||||||
4574 | Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(childStmt); | ||||||||||||
4575 | if (newStmt) { | ||||||||||||
4576 | childStmt = newStmt; | ||||||||||||
4577 | } | ||||||||||||
4578 | } | ||||||||||||
4579 | |||||||||||||
4580 | if (BlockExpr *BE = dyn_cast<BlockExpr>(S)) { | ||||||||||||
4581 | SmallVector<DeclRefExpr *, 8> InnerBlockDeclRefs; | ||||||||||||
4582 | llvm::SmallPtrSet<const DeclContext *, 8> InnerContexts; | ||||||||||||
4583 | InnerContexts.insert(BE->getBlockDecl()); | ||||||||||||
4584 | ImportedLocalExternalDecls.clear(); | ||||||||||||
4585 | GetInnerBlockDeclRefExprs(BE->getBody(), | ||||||||||||
4586 | InnerBlockDeclRefs, InnerContexts); | ||||||||||||
4587 | // Rewrite the block body in place. | ||||||||||||
4588 | Stmt *SaveCurrentBody = CurrentBody; | ||||||||||||
4589 | CurrentBody = BE->getBody(); | ||||||||||||
4590 | PropParentMap = nullptr; | ||||||||||||
4591 | // block literal on rhs of a property-dot-sytax assignment | ||||||||||||
4592 | // must be replaced by its synthesize ast so getRewrittenText | ||||||||||||
4593 | // works as expected. In this case, what actually ends up on RHS | ||||||||||||
4594 | // is the blockTranscribed which is the helper function for the | ||||||||||||
4595 | // block literal; as in: self.c = ^() {[ace ARR];}; | ||||||||||||
4596 | bool saveDisableReplaceStmt = DisableReplaceStmt; | ||||||||||||
4597 | DisableReplaceStmt = false; | ||||||||||||
4598 | RewriteFunctionBodyOrGlobalInitializer(BE->getBody()); | ||||||||||||
4599 | DisableReplaceStmt = saveDisableReplaceStmt; | ||||||||||||
4600 | CurrentBody = SaveCurrentBody; | ||||||||||||
4601 | PropParentMap = nullptr; | ||||||||||||
4602 | ImportedLocalExternalDecls.clear(); | ||||||||||||
4603 | // Now we snarf the rewritten text and stash it away for later use. | ||||||||||||
4604 | std::string Str = Rewrite.getRewrittenText(BE->getSourceRange()); | ||||||||||||
4605 | RewrittenBlockExprs[BE] = Str; | ||||||||||||
4606 | |||||||||||||
4607 | Stmt *blockTranscribed = SynthBlockInitExpr(BE, InnerBlockDeclRefs); | ||||||||||||
4608 | |||||||||||||
4609 | //blockTranscribed->dump(); | ||||||||||||
4610 | ReplaceStmt(S, blockTranscribed); | ||||||||||||
4611 | return blockTranscribed; | ||||||||||||
4612 | } | ||||||||||||
4613 | // Handle specific things. | ||||||||||||
4614 | if (ObjCEncodeExpr *AtEncode = dyn_cast<ObjCEncodeExpr>(S)) | ||||||||||||
4615 | return RewriteAtEncode(AtEncode); | ||||||||||||
4616 | |||||||||||||
4617 | if (ObjCSelectorExpr *AtSelector = dyn_cast<ObjCSelectorExpr>(S)) | ||||||||||||
4618 | return RewriteAtSelector(AtSelector); | ||||||||||||
4619 | |||||||||||||
4620 | if (ObjCStringLiteral *AtString = dyn_cast<ObjCStringLiteral>(S)) | ||||||||||||
4621 | return RewriteObjCStringLiteral(AtString); | ||||||||||||
4622 | |||||||||||||
4623 | if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) { | ||||||||||||
4624 | #if 0 | ||||||||||||
4625 | // Before we rewrite it, put the original message expression in a comment. | ||||||||||||
4626 | SourceLocation startLoc = MessExpr->getBeginLoc(); | ||||||||||||
4627 | SourceLocation endLoc = MessExpr->getEndLoc(); | ||||||||||||
4628 | |||||||||||||
4629 | const char *startBuf = SM->getCharacterData(startLoc); | ||||||||||||
4630 | const char *endBuf = SM->getCharacterData(endLoc); | ||||||||||||
4631 | |||||||||||||
4632 | std::string messString; | ||||||||||||
4633 | messString += "// "; | ||||||||||||
4634 | messString.append(startBuf, endBuf-startBuf+1); | ||||||||||||
4635 | messString += "\n"; | ||||||||||||
4636 | |||||||||||||
4637 | // FIXME: Missing definition of | ||||||||||||
4638 | // InsertText(clang::SourceLocation, char const*, unsigned int). | ||||||||||||
4639 | // InsertText(startLoc, messString); | ||||||||||||
4640 | // Tried this, but it didn't work either... | ||||||||||||
4641 | // ReplaceText(startLoc, 0, messString.c_str(), messString.size()); | ||||||||||||
4642 | #endif | ||||||||||||
4643 | return RewriteMessageExpr(MessExpr); | ||||||||||||
4644 | } | ||||||||||||
4645 | |||||||||||||
4646 | if (ObjCAtTryStmt *StmtTry = dyn_cast<ObjCAtTryStmt>(S)) | ||||||||||||
4647 | return RewriteObjCTryStmt(StmtTry); | ||||||||||||
4648 | |||||||||||||
4649 | if (ObjCAtSynchronizedStmt *StmtTry = dyn_cast<ObjCAtSynchronizedStmt>(S)) | ||||||||||||
4650 | return RewriteObjCSynchronizedStmt(StmtTry); | ||||||||||||
4651 | |||||||||||||
4652 | if (ObjCAtThrowStmt *StmtThrow = dyn_cast<ObjCAtThrowStmt>(S)) | ||||||||||||
4653 | return RewriteObjCThrowStmt(StmtThrow); | ||||||||||||
4654 | |||||||||||||
4655 | if (ObjCProtocolExpr *ProtocolExp = dyn_cast<ObjCProtocolExpr>(S)) | ||||||||||||
4656 | return RewriteObjCProtocolExpr(ProtocolExp); | ||||||||||||
4657 | |||||||||||||
4658 | if (ObjCForCollectionStmt *StmtForCollection = | ||||||||||||
4659 | dyn_cast<ObjCForCollectionStmt>(S)) | ||||||||||||
4660 | return RewriteObjCForCollectionStmt(StmtForCollection, | ||||||||||||
4661 | OrigStmtRange.getEnd()); | ||||||||||||
4662 | if (BreakStmt *StmtBreakStmt = | ||||||||||||
4663 | dyn_cast<BreakStmt>(S)) | ||||||||||||
4664 | return RewriteBreakStmt(StmtBreakStmt); | ||||||||||||
4665 | if (ContinueStmt *StmtContinueStmt = | ||||||||||||
4666 | dyn_cast<ContinueStmt>(S)) | ||||||||||||
4667 | return RewriteContinueStmt(StmtContinueStmt); | ||||||||||||
4668 | |||||||||||||
4669 | // Need to check for protocol refs (id <P>, Foo <P> *) in variable decls | ||||||||||||
4670 | // and cast exprs. | ||||||||||||
4671 | if (DeclStmt *DS = dyn_cast<DeclStmt>(S)) { | ||||||||||||
4672 | // FIXME: What we're doing here is modifying the type-specifier that | ||||||||||||
4673 | // precedes the first Decl. In the future the DeclGroup should have | ||||||||||||
4674 | // a separate type-specifier that we can rewrite. | ||||||||||||
4675 | // NOTE: We need to avoid rewriting the DeclStmt if it is within | ||||||||||||
4676 | // the context of an ObjCForCollectionStmt. For example: | ||||||||||||
4677 | // NSArray *someArray; | ||||||||||||
4678 | // for (id <FooProtocol> index in someArray) ; | ||||||||||||
4679 | // This is because RewriteObjCForCollectionStmt() does textual rewriting | ||||||||||||
4680 | // and it depends on the original text locations/positions. | ||||||||||||
4681 | if (Stmts.empty() || !IsDeclStmtInForeachHeader(DS)) | ||||||||||||
4682 | RewriteObjCQualifiedInterfaceTypes(*DS->decl_begin()); | ||||||||||||
4683 | |||||||||||||
4684 | // Blocks rewrite rules. | ||||||||||||
4685 | for (auto *SD : DS->decls()) { | ||||||||||||
4686 | if (ValueDecl *ND = dyn_cast<ValueDecl>(SD)) { | ||||||||||||
4687 | if (isTopLevelBlockPointerType(ND->getType())) | ||||||||||||
4688 | RewriteBlockPointerDecl(ND); | ||||||||||||
4689 | else if (ND->getType()->isFunctionPointerType()) | ||||||||||||
4690 | CheckFunctionPointerDecl(ND->getType(), ND); | ||||||||||||
4691 | if (VarDecl *VD = dyn_cast<VarDecl>(SD)) { | ||||||||||||
4692 | if (VD->hasAttr<BlocksAttr>()) { | ||||||||||||
4693 | static unsigned uniqueByrefDeclCount = 0; | ||||||||||||
4694 | assert(!BlockByRefDeclNo.count(ND) &&((!BlockByRefDeclNo.count(ND) && "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl" ) ? static_cast<void> (0) : __assert_fail ("!BlockByRefDeclNo.count(ND) && \"RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4695, __PRETTY_FUNCTION__)) | ||||||||||||
4695 | "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl")((!BlockByRefDeclNo.count(ND) && "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl" ) ? static_cast<void> (0) : __assert_fail ("!BlockByRefDeclNo.count(ND) && \"RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4695, __PRETTY_FUNCTION__)); | ||||||||||||
4696 | BlockByRefDeclNo[ND] = uniqueByrefDeclCount++; | ||||||||||||
4697 | RewriteByRefVar(VD); | ||||||||||||
4698 | } | ||||||||||||
4699 | else | ||||||||||||
4700 | RewriteTypeOfDecl(VD); | ||||||||||||
4701 | } | ||||||||||||
4702 | } | ||||||||||||
4703 | if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(SD)) { | ||||||||||||
4704 | if (isTopLevelBlockPointerType(TD->getUnderlyingType())) | ||||||||||||
4705 | RewriteBlockPointerDecl(TD); | ||||||||||||
4706 | else if (TD->getUnderlyingType()->isFunctionPointerType()) | ||||||||||||
4707 | CheckFunctionPointerDecl(TD->getUnderlyingType(), TD); | ||||||||||||
4708 | } | ||||||||||||
4709 | } | ||||||||||||
4710 | } | ||||||||||||
4711 | |||||||||||||
4712 | if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) | ||||||||||||
4713 | RewriteObjCQualifiedInterfaceTypes(CE); | ||||||||||||
4714 | |||||||||||||
4715 | if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) || | ||||||||||||
4716 | isa<DoStmt>(S) || isa<ForStmt>(S)) { | ||||||||||||
4717 | assert(!Stmts.empty() && "Statement stack is empty")((!Stmts.empty() && "Statement stack is empty") ? static_cast <void> (0) : __assert_fail ("!Stmts.empty() && \"Statement stack is empty\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4717, __PRETTY_FUNCTION__)); | ||||||||||||
4718 | assert ((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) ||(((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt> (Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt >(Stmts.back())) && "Statement stack mismatch") ? static_cast <void> (0) : __assert_fail ("(isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back())) && \"Statement stack mismatch\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4720, __PRETTY_FUNCTION__)) | ||||||||||||
4719 | isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back()))(((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt> (Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt >(Stmts.back())) && "Statement stack mismatch") ? static_cast <void> (0) : __assert_fail ("(isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back())) && \"Statement stack mismatch\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4720, __PRETTY_FUNCTION__)) | ||||||||||||
4720 | && "Statement stack mismatch")(((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt> (Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt >(Stmts.back())) && "Statement stack mismatch") ? static_cast <void> (0) : __assert_fail ("(isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back())) && \"Statement stack mismatch\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 4720, __PRETTY_FUNCTION__)); | ||||||||||||
4721 | Stmts.pop_back(); | ||||||||||||
4722 | } | ||||||||||||
4723 | // Handle blocks rewriting. | ||||||||||||
4724 | if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) { | ||||||||||||
4725 | ValueDecl *VD = DRE->getDecl(); | ||||||||||||
4726 | if (VD->hasAttr<BlocksAttr>()) | ||||||||||||
4727 | return RewriteBlockDeclRefExpr(DRE); | ||||||||||||
4728 | if (HasLocalVariableExternalStorage(VD)) | ||||||||||||
4729 | return RewriteLocalVariableExternalStorage(DRE); | ||||||||||||
4730 | } | ||||||||||||
4731 | |||||||||||||
4732 | if (CallExpr *CE = dyn_cast<CallExpr>(S)) { | ||||||||||||
4733 | if (CE->getCallee()->getType()->isBlockPointerType()) { | ||||||||||||
4734 | Stmt *BlockCall = SynthesizeBlockCall(CE, CE->getCallee()); | ||||||||||||
4735 | ReplaceStmt(S, BlockCall); | ||||||||||||
4736 | return BlockCall; | ||||||||||||
4737 | } | ||||||||||||
4738 | } | ||||||||||||
4739 | if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) { | ||||||||||||
4740 | RewriteCastExpr(CE); | ||||||||||||
4741 | } | ||||||||||||
4742 | #if 0 | ||||||||||||
4743 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) { | ||||||||||||
4744 | CastExpr *Replacement = new (Context) CastExpr(ICE->getType(), | ||||||||||||
4745 | ICE->getSubExpr(), | ||||||||||||
4746 | SourceLocation()); | ||||||||||||
4747 | // Get the new text. | ||||||||||||
4748 | std::string SStr; | ||||||||||||
4749 | llvm::raw_string_ostream Buf(SStr); | ||||||||||||
4750 | Replacement->printPretty(Buf); | ||||||||||||
4751 | const std::string &Str = Buf.str(); | ||||||||||||
4752 | |||||||||||||
4753 | printf("CAST = %s\n", &Str[0]); | ||||||||||||
4754 | InsertText(ICE->getSubExpr()->getBeginLoc(), Str); | ||||||||||||
4755 | delete S; | ||||||||||||
4756 | return Replacement; | ||||||||||||
4757 | } | ||||||||||||
4758 | #endif | ||||||||||||
4759 | // Return this stmt unmodified. | ||||||||||||
4760 | return S; | ||||||||||||
4761 | } | ||||||||||||
4762 | |||||||||||||
4763 | void RewriteObjC::RewriteRecordBody(RecordDecl *RD) { | ||||||||||||
4764 | for (auto *FD : RD->fields()) { | ||||||||||||
4765 | if (isTopLevelBlockPointerType(FD->getType())) | ||||||||||||
4766 | RewriteBlockPointerDecl(FD); | ||||||||||||
4767 | if (FD->getType()->isObjCQualifiedIdType() || | ||||||||||||
4768 | FD->getType()->isObjCQualifiedInterfaceType()) | ||||||||||||
4769 | RewriteObjCQualifiedInterfaceTypes(FD); | ||||||||||||
4770 | } | ||||||||||||
4771 | } | ||||||||||||
4772 | |||||||||||||
4773 | /// HandleDeclInMainFile - This is called for each top-level decl defined in the | ||||||||||||
4774 | /// main file of the input. | ||||||||||||
4775 | void RewriteObjC::HandleDeclInMainFile(Decl *D) { | ||||||||||||
4776 | switch (D->getKind()) { | ||||||||||||
4777 | case Decl::Function: { | ||||||||||||
4778 | FunctionDecl *FD = cast<FunctionDecl>(D); | ||||||||||||
4779 | if (FD->isOverloadedOperator()) | ||||||||||||
4780 | return; | ||||||||||||
4781 | |||||||||||||
4782 | // Since function prototypes don't have ParmDecl's, we check the function | ||||||||||||
4783 | // prototype. This enables us to rewrite function declarations and | ||||||||||||
4784 | // definitions using the same code. | ||||||||||||
4785 | RewriteBlocksInFunctionProtoType(FD->getType(), FD); | ||||||||||||
4786 | |||||||||||||
4787 | if (!FD->isThisDeclarationADefinition()) | ||||||||||||
4788 | break; | ||||||||||||
4789 | |||||||||||||
4790 | // FIXME: If this should support Obj-C++, support CXXTryStmt | ||||||||||||
4791 | if (CompoundStmt *Body = dyn_cast_or_null<CompoundStmt>(FD->getBody())) { | ||||||||||||
4792 | CurFunctionDef = FD; | ||||||||||||
4793 | CurFunctionDeclToDeclareForBlock = FD; | ||||||||||||
4794 | CurrentBody = Body; | ||||||||||||
4795 | Body = | ||||||||||||
4796 | cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body)); | ||||||||||||
4797 | FD->setBody(Body); | ||||||||||||
4798 | CurrentBody = nullptr; | ||||||||||||
4799 | if (PropParentMap) { | ||||||||||||
4800 | delete PropParentMap; | ||||||||||||
4801 | PropParentMap = nullptr; | ||||||||||||
4802 | } | ||||||||||||
4803 | // This synthesizes and inserts the block "impl" struct, invoke function, | ||||||||||||
4804 | // and any copy/dispose helper functions. | ||||||||||||
4805 | InsertBlockLiteralsWithinFunction(FD); | ||||||||||||
4806 | CurFunctionDef = nullptr; | ||||||||||||
4807 | CurFunctionDeclToDeclareForBlock = nullptr; | ||||||||||||
4808 | } | ||||||||||||
4809 | break; | ||||||||||||
4810 | } | ||||||||||||
4811 | case Decl::ObjCMethod: { | ||||||||||||
4812 | ObjCMethodDecl *MD = cast<ObjCMethodDecl>(D); | ||||||||||||
4813 | if (CompoundStmt *Body = MD->getCompoundBody()) { | ||||||||||||
4814 | CurMethodDef = MD; | ||||||||||||
4815 | CurrentBody = Body; | ||||||||||||
4816 | Body = | ||||||||||||
4817 | cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body)); | ||||||||||||
4818 | MD->setBody(Body); | ||||||||||||
4819 | CurrentBody = nullptr; | ||||||||||||
4820 | if (PropParentMap) { | ||||||||||||
4821 | delete PropParentMap; | ||||||||||||
4822 | PropParentMap = nullptr; | ||||||||||||
4823 | } | ||||||||||||
4824 | InsertBlockLiteralsWithinMethod(MD); | ||||||||||||
4825 | CurMethodDef = nullptr; | ||||||||||||
4826 | } | ||||||||||||
4827 | break; | ||||||||||||
4828 | } | ||||||||||||
4829 | case Decl::ObjCImplementation: { | ||||||||||||
4830 | ObjCImplementationDecl *CI = cast<ObjCImplementationDecl>(D); | ||||||||||||
4831 | ClassImplementation.push_back(CI); | ||||||||||||
4832 | break; | ||||||||||||
4833 | } | ||||||||||||
4834 | case Decl::ObjCCategoryImpl: { | ||||||||||||
4835 | ObjCCategoryImplDecl *CI = cast<ObjCCategoryImplDecl>(D); | ||||||||||||
4836 | CategoryImplementation.push_back(CI); | ||||||||||||
4837 | break; | ||||||||||||
4838 | } | ||||||||||||
4839 | case Decl::Var: { | ||||||||||||
4840 | VarDecl *VD = cast<VarDecl>(D); | ||||||||||||
4841 | RewriteObjCQualifiedInterfaceTypes(VD); | ||||||||||||
4842 | if (isTopLevelBlockPointerType(VD->getType())) | ||||||||||||
4843 | RewriteBlockPointerDecl(VD); | ||||||||||||
4844 | else if (VD->getType()->isFunctionPointerType()) { | ||||||||||||
4845 | CheckFunctionPointerDecl(VD->getType(), VD); | ||||||||||||
4846 | if (VD->getInit()) { | ||||||||||||
4847 | if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) { | ||||||||||||
4848 | RewriteCastExpr(CE); | ||||||||||||
4849 | } | ||||||||||||
4850 | } | ||||||||||||
4851 | } else if (VD->getType()->isRecordType()) { | ||||||||||||
4852 | RecordDecl *RD = VD->getType()->getAs<RecordType>()->getDecl(); | ||||||||||||
| |||||||||||||
4853 | if (RD->isCompleteDefinition()) | ||||||||||||
4854 | RewriteRecordBody(RD); | ||||||||||||
4855 | } | ||||||||||||
4856 | if (VD->getInit()) { | ||||||||||||
4857 | GlobalVarDecl = VD; | ||||||||||||
4858 | CurrentBody = VD->getInit(); | ||||||||||||
4859 | RewriteFunctionBodyOrGlobalInitializer(VD->getInit()); | ||||||||||||
4860 | CurrentBody = nullptr; | ||||||||||||
4861 | if (PropParentMap) { | ||||||||||||
4862 | delete PropParentMap; | ||||||||||||
4863 | PropParentMap = nullptr; | ||||||||||||
4864 | } | ||||||||||||
4865 | SynthesizeBlockLiterals(VD->getTypeSpecStartLoc(), VD->getName()); | ||||||||||||
4866 | GlobalVarDecl = nullptr; | ||||||||||||
4867 | |||||||||||||
4868 | // This is needed for blocks. | ||||||||||||
4869 | if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) { | ||||||||||||
4870 | RewriteCastExpr(CE); | ||||||||||||
4871 | } | ||||||||||||
4872 | } | ||||||||||||
4873 | break; | ||||||||||||
4874 | } | ||||||||||||
4875 | case Decl::TypeAlias: | ||||||||||||
4876 | case Decl::Typedef: { | ||||||||||||
4877 | if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) { | ||||||||||||
4878 | if (isTopLevelBlockPointerType(TD->getUnderlyingType())) | ||||||||||||
4879 | RewriteBlockPointerDecl(TD); | ||||||||||||
4880 | else if (TD->getUnderlyingType()->isFunctionPointerType()) | ||||||||||||
4881 | CheckFunctionPointerDecl(TD->getUnderlyingType(), TD); | ||||||||||||
4882 | } | ||||||||||||
4883 | break; | ||||||||||||
4884 | } | ||||||||||||
4885 | case Decl::CXXRecord: | ||||||||||||
4886 | case Decl::Record: { | ||||||||||||
4887 | RecordDecl *RD = cast<RecordDecl>(D); | ||||||||||||
4888 | if (RD->isCompleteDefinition()) | ||||||||||||
4889 | RewriteRecordBody(RD); | ||||||||||||
4890 | break; | ||||||||||||
4891 | } | ||||||||||||
4892 | default: | ||||||||||||
4893 | break; | ||||||||||||
4894 | } | ||||||||||||
4895 | // Nothing yet. | ||||||||||||
4896 | } | ||||||||||||
4897 | |||||||||||||
4898 | void RewriteObjC::HandleTranslationUnit(ASTContext &C) { | ||||||||||||
4899 | if (Diags.hasErrorOccurred()) | ||||||||||||
4900 | return; | ||||||||||||
4901 | |||||||||||||
4902 | RewriteInclude(); | ||||||||||||
4903 | |||||||||||||
4904 | // Here's a great place to add any extra declarations that may be needed. | ||||||||||||
4905 | // Write out meta data for each @protocol(<expr>). | ||||||||||||
4906 | for (ObjCProtocolDecl *ProtDecl : ProtocolExprDecls) | ||||||||||||
4907 | RewriteObjCProtocolMetaData(ProtDecl, "", "", Preamble); | ||||||||||||
4908 | |||||||||||||
4909 | InsertText(SM->getLocForStartOfFile(MainFileID), Preamble, false); | ||||||||||||
4910 | if (ClassImplementation.size() || CategoryImplementation.size()) | ||||||||||||
4911 | RewriteImplementations(); | ||||||||||||
4912 | |||||||||||||
4913 | // Get the buffer corresponding to MainFileID. If we haven't changed it, then | ||||||||||||
4914 | // we are done. | ||||||||||||
4915 | if (const RewriteBuffer *RewriteBuf = | ||||||||||||
4916 | Rewrite.getRewriteBufferFor(MainFileID)) { | ||||||||||||
4917 | //printf("Changed:\n"); | ||||||||||||
4918 | *OutFile << std::string(RewriteBuf->begin(), RewriteBuf->end()); | ||||||||||||
4919 | } else { | ||||||||||||
4920 | llvm::errs() << "No changes\n"; | ||||||||||||
4921 | } | ||||||||||||
4922 | |||||||||||||
4923 | if (ClassImplementation.size() || CategoryImplementation.size() || | ||||||||||||
4924 | ProtocolExprDecls.size()) { | ||||||||||||
4925 | // Rewrite Objective-c meta data* | ||||||||||||
4926 | std::string ResultStr; | ||||||||||||
4927 | RewriteMetaDataIntoBuffer(ResultStr); | ||||||||||||
4928 | // Emit metadata. | ||||||||||||
4929 | *OutFile << ResultStr; | ||||||||||||
4930 | } | ||||||||||||
4931 | OutFile->flush(); | ||||||||||||
4932 | } | ||||||||||||
4933 | |||||||||||||
4934 | void RewriteObjCFragileABI::Initialize(ASTContext &context) { | ||||||||||||
4935 | InitializeCommon(context); | ||||||||||||
4936 | |||||||||||||
4937 | // declaring objc_selector outside the parameter list removes a silly | ||||||||||||
4938 | // scope related warning... | ||||||||||||
4939 | if (IsHeader) | ||||||||||||
4940 | Preamble = "#pragma once\n"; | ||||||||||||
4941 | Preamble += "struct objc_selector; struct objc_class;\n"; | ||||||||||||
4942 | Preamble += "struct __rw_objc_super { struct objc_object *object; "; | ||||||||||||
4943 | Preamble += "struct objc_object *superClass; "; | ||||||||||||
4944 | if (LangOpts.MicrosoftExt) { | ||||||||||||
4945 | // Add a constructor for creating temporary objects. | ||||||||||||
4946 | Preamble += "__rw_objc_super(struct objc_object *o, struct objc_object *s) " | ||||||||||||
4947 | ": "; | ||||||||||||
4948 | Preamble += "object(o), superClass(s) {} "; | ||||||||||||
4949 | } | ||||||||||||
4950 | Preamble += "};\n"; | ||||||||||||
4951 | Preamble += "#ifndef _REWRITER_typedef_Protocol\n"; | ||||||||||||
4952 | Preamble += "typedef struct objc_object Protocol;\n"; | ||||||||||||
4953 | Preamble += "#define _REWRITER_typedef_Protocol\n"; | ||||||||||||
4954 | Preamble += "#endif\n"; | ||||||||||||
4955 | if (LangOpts.MicrosoftExt) { | ||||||||||||
4956 | Preamble += "#define __OBJC_RW_DLLIMPORT extern \"C\" __declspec(dllimport)\n"; | ||||||||||||
4957 | Preamble += "#define __OBJC_RW_STATICIMPORT extern \"C\"\n"; | ||||||||||||
4958 | } else | ||||||||||||
4959 | Preamble += "#define __OBJC_RW_DLLIMPORT extern\n"; | ||||||||||||
4960 | Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSend"; | ||||||||||||
4961 | Preamble += "(struct objc_object *, struct objc_selector *, ...);\n"; | ||||||||||||
4962 | Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSendSuper"; | ||||||||||||
4963 | Preamble += "(struct objc_super *, struct objc_selector *, ...);\n"; | ||||||||||||
4964 | Preamble += "__OBJC_RW_DLLIMPORT struct objc_object* objc_msgSend_stret"; | ||||||||||||
4965 | Preamble += "(struct objc_object *, struct objc_selector *, ...);\n"; | ||||||||||||
4966 | Preamble += "__OBJC_RW_DLLIMPORT struct objc_object* objc_msgSendSuper_stret"; | ||||||||||||
4967 | Preamble += "(struct objc_super *, struct objc_selector *, ...);\n"; | ||||||||||||
4968 | Preamble += "__OBJC_RW_DLLIMPORT double objc_msgSend_fpret"; | ||||||||||||
4969 | Preamble += "(struct objc_object *, struct objc_selector *, ...);\n"; | ||||||||||||
4970 | Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getClass"; | ||||||||||||
4971 | Preamble += "(const char *);\n"; | ||||||||||||
4972 | Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *class_getSuperclass"; | ||||||||||||
4973 | Preamble += "(struct objc_class *);\n"; | ||||||||||||
4974 | Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getMetaClass"; | ||||||||||||
4975 | Preamble += "(const char *);\n"; | ||||||||||||
4976 | Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_throw(struct objc_object *);\n"; | ||||||||||||
4977 | Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_enter(void *);\n"; | ||||||||||||
4978 | Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_exit(void *);\n"; | ||||||||||||
4979 | Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_exception_extract(void *);\n"; | ||||||||||||
4980 | Preamble += "__OBJC_RW_DLLIMPORT int objc_exception_match"; | ||||||||||||
4981 | Preamble += "(struct objc_class *, struct objc_object *);\n"; | ||||||||||||
4982 | // @synchronized hooks. | ||||||||||||
4983 | Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_enter(struct objc_object *);\n"; | ||||||||||||
4984 | Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_exit(struct objc_object *);\n"; | ||||||||||||
4985 | Preamble += "__OBJC_RW_DLLIMPORT Protocol *objc_getProtocol(const char *);\n"; | ||||||||||||
4986 | Preamble += "#ifndef __FASTENUMERATIONSTATE\n"; | ||||||||||||
4987 | Preamble += "struct __objcFastEnumerationState {\n\t"; | ||||||||||||
4988 | Preamble += "unsigned long state;\n\t"; | ||||||||||||
4989 | Preamble += "void **itemsPtr;\n\t"; | ||||||||||||
4990 | Preamble += "unsigned long *mutationsPtr;\n\t"; | ||||||||||||
4991 | Preamble += "unsigned long extra[5];\n};\n"; | ||||||||||||
4992 | Preamble += "__OBJC_RW_DLLIMPORT void objc_enumerationMutation(struct objc_object *);\n"; | ||||||||||||
4993 | Preamble += "#define __FASTENUMERATIONSTATE\n"; | ||||||||||||
4994 | Preamble += "#endif\n"; | ||||||||||||
4995 | Preamble += "#ifndef __NSCONSTANTSTRINGIMPL\n"; | ||||||||||||
4996 | Preamble += "struct __NSConstantStringImpl {\n"; | ||||||||||||
4997 | Preamble += " int *isa;\n"; | ||||||||||||
4998 | Preamble += " int flags;\n"; | ||||||||||||
4999 | Preamble += " char *str;\n"; | ||||||||||||
5000 | Preamble += " long length;\n"; | ||||||||||||
5001 | Preamble += "};\n"; | ||||||||||||
5002 | Preamble += "#ifdef CF_EXPORT_CONSTANT_STRING\n"; | ||||||||||||
5003 | Preamble += "extern \"C\" __declspec(dllexport) int __CFConstantStringClassReference[];\n"; | ||||||||||||
5004 | Preamble += "#else\n"; | ||||||||||||
5005 | Preamble += "__OBJC_RW_DLLIMPORT int __CFConstantStringClassReference[];\n"; | ||||||||||||
5006 | Preamble += "#endif\n"; | ||||||||||||
5007 | Preamble += "#define __NSCONSTANTSTRINGIMPL\n"; | ||||||||||||
5008 | Preamble += "#endif\n"; | ||||||||||||
5009 | // Blocks preamble. | ||||||||||||
5010 | Preamble += "#ifndef BLOCK_IMPL\n"; | ||||||||||||
5011 | Preamble += "#define BLOCK_IMPL\n"; | ||||||||||||
5012 | Preamble += "struct __block_impl {\n"; | ||||||||||||
5013 | Preamble += " void *isa;\n"; | ||||||||||||
5014 | Preamble += " int Flags;\n"; | ||||||||||||
5015 | Preamble += " int Reserved;\n"; | ||||||||||||
5016 | Preamble += " void *FuncPtr;\n"; | ||||||||||||
5017 | Preamble += "};\n"; | ||||||||||||
5018 | Preamble += "// Runtime copy/destroy helper functions (from Block_private.h)\n"; | ||||||||||||
5019 | Preamble += "#ifdef __OBJC_EXPORT_BLOCKS\n"; | ||||||||||||
5020 | Preamble += "extern \"C\" __declspec(dllexport) " | ||||||||||||
5021 | "void _Block_object_assign(void *, const void *, const int);\n"; | ||||||||||||
5022 | Preamble += "extern \"C\" __declspec(dllexport) void _Block_object_dispose(const void *, const int);\n"; | ||||||||||||
5023 | Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteGlobalBlock[32];\n"; | ||||||||||||
5024 | Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteStackBlock[32];\n"; | ||||||||||||
5025 | Preamble += "#else\n"; | ||||||||||||
5026 | Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_assign(void *, const void *, const int);\n"; | ||||||||||||
5027 | Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_dispose(const void *, const int);\n"; | ||||||||||||
5028 | Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteGlobalBlock[32];\n"; | ||||||||||||
5029 | Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteStackBlock[32];\n"; | ||||||||||||
5030 | Preamble += "#endif\n"; | ||||||||||||
5031 | Preamble += "#endif\n"; | ||||||||||||
5032 | if (LangOpts.MicrosoftExt) { | ||||||||||||
5033 | Preamble += "#undef __OBJC_RW_DLLIMPORT\n"; | ||||||||||||
5034 | Preamble += "#undef __OBJC_RW_STATICIMPORT\n"; | ||||||||||||
5035 | Preamble += "#ifndef KEEP_ATTRIBUTES\n"; // We use this for clang tests. | ||||||||||||
5036 | Preamble += "#define __attribute__(X)\n"; | ||||||||||||
5037 | Preamble += "#endif\n"; | ||||||||||||
5038 | Preamble += "#define __weak\n"; | ||||||||||||
5039 | } | ||||||||||||
5040 | else { | ||||||||||||
5041 | Preamble += "#define __block\n"; | ||||||||||||
5042 | Preamble += "#define __weak\n"; | ||||||||||||
5043 | } | ||||||||||||
5044 | // NOTE! Windows uses LLP64 for 64bit mode. So, cast pointer to long long | ||||||||||||
5045 | // as this avoids warning in any 64bit/32bit compilation model. | ||||||||||||
5046 | Preamble += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((long long) &((TYPE *)0)->MEMBER)\n"; | ||||||||||||
5047 | } | ||||||||||||
5048 | |||||||||||||
5049 | /// RewriteIvarOffsetComputation - This routine synthesizes computation of | ||||||||||||
5050 | /// ivar offset. | ||||||||||||
5051 | void RewriteObjCFragileABI::RewriteIvarOffsetComputation(ObjCIvarDecl *ivar, | ||||||||||||
5052 | std::string &Result) { | ||||||||||||
5053 | if (ivar->isBitField()) { | ||||||||||||
5054 | // FIXME: The hack below doesn't work for bitfields. For now, we simply | ||||||||||||
5055 | // place all bitfields at offset 0. | ||||||||||||
5056 | Result += "0"; | ||||||||||||
5057 | } else { | ||||||||||||
5058 | Result += "__OFFSETOFIVAR__(struct "; | ||||||||||||
5059 | Result += ivar->getContainingInterface()->getNameAsString(); | ||||||||||||
5060 | if (LangOpts.MicrosoftExt) | ||||||||||||
5061 | Result += "_IMPL"; | ||||||||||||
5062 | Result += ", "; | ||||||||||||
5063 | Result += ivar->getNameAsString(); | ||||||||||||
5064 | Result += ")"; | ||||||||||||
5065 | } | ||||||||||||
5066 | } | ||||||||||||
5067 | |||||||||||||
5068 | /// RewriteObjCProtocolMetaData - Rewrite protocols meta-data. | ||||||||||||
5069 | void RewriteObjCFragileABI::RewriteObjCProtocolMetaData( | ||||||||||||
5070 | ObjCProtocolDecl *PDecl, StringRef prefix, | ||||||||||||
5071 | StringRef ClassName, std::string &Result) { | ||||||||||||
5072 | static bool objc_protocol_methods = false; | ||||||||||||
5073 | |||||||||||||
5074 | // Output struct protocol_methods holder of method selector and type. | ||||||||||||
5075 | if (!objc_protocol_methods && PDecl->hasDefinition()) { | ||||||||||||
5076 | /* struct protocol_methods { | ||||||||||||
5077 | SEL _cmd; | ||||||||||||
5078 | char *method_types; | ||||||||||||
5079 | } | ||||||||||||
5080 | */ | ||||||||||||
5081 | Result += "\nstruct _protocol_methods {\n"; | ||||||||||||
5082 | Result += "\tstruct objc_selector *_cmd;\n"; | ||||||||||||
5083 | Result += "\tchar *method_types;\n"; | ||||||||||||
5084 | Result += "};\n"; | ||||||||||||
5085 | |||||||||||||
5086 | objc_protocol_methods = true; | ||||||||||||
5087 | } | ||||||||||||
5088 | // Do not synthesize the protocol more than once. | ||||||||||||
5089 | if (ObjCSynthesizedProtocols.count(PDecl->getCanonicalDecl())) | ||||||||||||
5090 | return; | ||||||||||||
5091 | |||||||||||||
5092 | if (ObjCProtocolDecl *Def = PDecl->getDefinition()) | ||||||||||||
5093 | PDecl = Def; | ||||||||||||
5094 | |||||||||||||
5095 | if (PDecl->instmeth_begin() != PDecl->instmeth_end()) { | ||||||||||||
5096 | unsigned NumMethods = std::distance(PDecl->instmeth_begin(), | ||||||||||||
5097 | PDecl->instmeth_end()); | ||||||||||||
5098 | /* struct _objc_protocol_method_list { | ||||||||||||
5099 | int protocol_method_count; | ||||||||||||
5100 | struct protocol_methods protocols[]; | ||||||||||||
5101 | } | ||||||||||||
5102 | */ | ||||||||||||
5103 | Result += "\nstatic struct {\n"; | ||||||||||||
5104 | Result += "\tint protocol_method_count;\n"; | ||||||||||||
5105 | Result += "\tstruct _protocol_methods protocol_methods["; | ||||||||||||
5106 | Result += utostr(NumMethods); | ||||||||||||
5107 | Result += "];\n} _OBJC_PROTOCOL_INSTANCE_METHODS_"; | ||||||||||||
5108 | Result += PDecl->getNameAsString(); | ||||||||||||
5109 | Result += " __attribute__ ((used, section (\"__OBJC, __cat_inst_meth\")))= " | ||||||||||||
5110 | "{\n\t" + utostr(NumMethods) + "\n"; | ||||||||||||
5111 | |||||||||||||
5112 | // Output instance methods declared in this protocol. | ||||||||||||
5113 | for (ObjCProtocolDecl::instmeth_iterator | ||||||||||||
5114 | I = PDecl->instmeth_begin(), E = PDecl->instmeth_end(); | ||||||||||||
5115 | I != E; ++I) { | ||||||||||||
5116 | if (I == PDecl->instmeth_begin()) | ||||||||||||
5117 | Result += "\t ,{{(struct objc_selector *)\""; | ||||||||||||
5118 | else | ||||||||||||
5119 | Result += "\t ,{(struct objc_selector *)\""; | ||||||||||||
5120 | Result += (*I)->getSelector().getAsString(); | ||||||||||||
5121 | std::string MethodTypeString = Context->getObjCEncodingForMethodDecl(*I); | ||||||||||||
5122 | Result += "\", \""; | ||||||||||||
5123 | Result += MethodTypeString; | ||||||||||||
5124 | Result += "\"}\n"; | ||||||||||||
5125 | } | ||||||||||||
5126 | Result += "\t }\n};\n"; | ||||||||||||
5127 | } | ||||||||||||
5128 | |||||||||||||
5129 | // Output class methods declared in this protocol. | ||||||||||||
5130 | unsigned NumMethods = std::distance(PDecl->classmeth_begin(), | ||||||||||||
5131 | PDecl->classmeth_end()); | ||||||||||||
5132 | if (NumMethods > 0) { | ||||||||||||
5133 | /* struct _objc_protocol_method_list { | ||||||||||||
5134 | int protocol_method_count; | ||||||||||||
5135 | struct protocol_methods protocols[]; | ||||||||||||
5136 | } | ||||||||||||
5137 | */ | ||||||||||||
5138 | Result += "\nstatic struct {\n"; | ||||||||||||
5139 | Result += "\tint protocol_method_count;\n"; | ||||||||||||
5140 | Result += "\tstruct _protocol_methods protocol_methods["; | ||||||||||||
5141 | Result += utostr(NumMethods); | ||||||||||||
5142 | Result += "];\n} _OBJC_PROTOCOL_CLASS_METHODS_"; | ||||||||||||
5143 | Result += PDecl->getNameAsString(); | ||||||||||||
5144 | Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= " | ||||||||||||
5145 | "{\n\t"; | ||||||||||||
5146 | Result += utostr(NumMethods); | ||||||||||||
5147 | Result += "\n"; | ||||||||||||
5148 | |||||||||||||
5149 | // Output instance methods declared in this protocol. | ||||||||||||
5150 | for (ObjCProtocolDecl::classmeth_iterator | ||||||||||||
5151 | I = PDecl->classmeth_begin(), E = PDecl->classmeth_end(); | ||||||||||||
5152 | I != E; ++I) { | ||||||||||||
5153 | if (I == PDecl->classmeth_begin()) | ||||||||||||
5154 | Result += "\t ,{{(struct objc_selector *)\""; | ||||||||||||
5155 | else | ||||||||||||
5156 | Result += "\t ,{(struct objc_selector *)\""; | ||||||||||||
5157 | Result += (*I)->getSelector().getAsString(); | ||||||||||||
5158 | std::string MethodTypeString = Context->getObjCEncodingForMethodDecl(*I); | ||||||||||||
5159 | Result += "\", \""; | ||||||||||||
5160 | Result += MethodTypeString; | ||||||||||||
5161 | Result += "\"}\n"; | ||||||||||||
5162 | } | ||||||||||||
5163 | Result += "\t }\n};\n"; | ||||||||||||
5164 | } | ||||||||||||
5165 | |||||||||||||
5166 | // Output: | ||||||||||||
5167 | /* struct _objc_protocol { | ||||||||||||
5168 | // Objective-C 1.0 extensions | ||||||||||||
5169 | struct _objc_protocol_extension *isa; | ||||||||||||
5170 | char *protocol_name; | ||||||||||||
5171 | struct _objc_protocol **protocol_list; | ||||||||||||
5172 | struct _objc_protocol_method_list *instance_methods; | ||||||||||||
5173 | struct _objc_protocol_method_list *class_methods; | ||||||||||||
5174 | }; | ||||||||||||
5175 | */ | ||||||||||||
5176 | static bool objc_protocol = false; | ||||||||||||
5177 | if (!objc_protocol) { | ||||||||||||
5178 | Result += "\nstruct _objc_protocol {\n"; | ||||||||||||
5179 | Result += "\tstruct _objc_protocol_extension *isa;\n"; | ||||||||||||
5180 | Result += "\tchar *protocol_name;\n"; | ||||||||||||
5181 | Result += "\tstruct _objc_protocol **protocol_list;\n"; | ||||||||||||
5182 | Result += "\tstruct _objc_protocol_method_list *instance_methods;\n"; | ||||||||||||
5183 | Result += "\tstruct _objc_protocol_method_list *class_methods;\n"; | ||||||||||||
5184 | Result += "};\n"; | ||||||||||||
5185 | |||||||||||||
5186 | objc_protocol = true; | ||||||||||||
5187 | } | ||||||||||||
5188 | |||||||||||||
5189 | Result += "\nstatic struct _objc_protocol _OBJC_PROTOCOL_"; | ||||||||||||
5190 | Result += PDecl->getNameAsString(); | ||||||||||||
5191 | Result += " __attribute__ ((used, section (\"__OBJC, __protocol\")))= " | ||||||||||||
5192 | "{\n\t0, \""; | ||||||||||||
5193 | Result += PDecl->getNameAsString(); | ||||||||||||
5194 | Result += "\", 0, "; | ||||||||||||
5195 | if (PDecl->instmeth_begin() != PDecl->instmeth_end()) { | ||||||||||||
5196 | Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_INSTANCE_METHODS_"; | ||||||||||||
5197 | Result += PDecl->getNameAsString(); | ||||||||||||
5198 | Result += ", "; | ||||||||||||
5199 | } | ||||||||||||
5200 | else | ||||||||||||
5201 | Result += "0, "; | ||||||||||||
5202 | if (PDecl->classmeth_begin() != PDecl->classmeth_end()) { | ||||||||||||
5203 | Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_CLASS_METHODS_"; | ||||||||||||
5204 | Result += PDecl->getNameAsString(); | ||||||||||||
5205 | Result += "\n"; | ||||||||||||
5206 | } | ||||||||||||
5207 | else | ||||||||||||
5208 | Result += "0\n"; | ||||||||||||
5209 | Result += "};\n"; | ||||||||||||
5210 | |||||||||||||
5211 | // Mark this protocol as having been generated. | ||||||||||||
5212 | if (!ObjCSynthesizedProtocols.insert(PDecl->getCanonicalDecl()).second) | ||||||||||||
5213 | llvm_unreachable("protocol already synthesized")::llvm::llvm_unreachable_internal("protocol already synthesized" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 5213); | ||||||||||||
5214 | } | ||||||||||||
5215 | |||||||||||||
5216 | void RewriteObjCFragileABI::RewriteObjCProtocolListMetaData( | ||||||||||||
5217 | const ObjCList<ObjCProtocolDecl> &Protocols, | ||||||||||||
5218 | StringRef prefix, StringRef ClassName, | ||||||||||||
5219 | std::string &Result) { | ||||||||||||
5220 | if (Protocols.empty()) return; | ||||||||||||
5221 | |||||||||||||
5222 | for (unsigned i = 0; i != Protocols.size(); i++) | ||||||||||||
5223 | RewriteObjCProtocolMetaData(Protocols[i], prefix, ClassName, Result); | ||||||||||||
5224 | |||||||||||||
5225 | // Output the top lovel protocol meta-data for the class. | ||||||||||||
5226 | /* struct _objc_protocol_list { | ||||||||||||
5227 | struct _objc_protocol_list *next; | ||||||||||||
5228 | int protocol_count; | ||||||||||||
5229 | struct _objc_protocol *class_protocols[]; | ||||||||||||
5230 | } | ||||||||||||
5231 | */ | ||||||||||||
5232 | Result += "\nstatic struct {\n"; | ||||||||||||
5233 | Result += "\tstruct _objc_protocol_list *next;\n"; | ||||||||||||
5234 | Result += "\tint protocol_count;\n"; | ||||||||||||
5235 | Result += "\tstruct _objc_protocol *class_protocols["; | ||||||||||||
5236 | Result += utostr(Protocols.size()); | ||||||||||||
5237 | Result += "];\n} _OBJC_"; | ||||||||||||
5238 | Result += prefix; | ||||||||||||
5239 | Result += "_PROTOCOLS_"; | ||||||||||||
5240 | Result += ClassName; | ||||||||||||
5241 | Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= " | ||||||||||||
5242 | "{\n\t0, "; | ||||||||||||
5243 | Result += utostr(Protocols.size()); | ||||||||||||
5244 | Result += "\n"; | ||||||||||||
5245 | |||||||||||||
5246 | Result += "\t,{&_OBJC_PROTOCOL_"; | ||||||||||||
5247 | Result += Protocols[0]->getNameAsString(); | ||||||||||||
5248 | Result += " \n"; | ||||||||||||
5249 | |||||||||||||
5250 | for (unsigned i = 1; i != Protocols.size(); i++) { | ||||||||||||
5251 | Result += "\t ,&_OBJC_PROTOCOL_"; | ||||||||||||
5252 | Result += Protocols[i]->getNameAsString(); | ||||||||||||
5253 | Result += "\n"; | ||||||||||||
5254 | } | ||||||||||||
5255 | Result += "\t }\n};\n"; | ||||||||||||
5256 | } | ||||||||||||
5257 | |||||||||||||
5258 | void RewriteObjCFragileABI::RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl, | ||||||||||||
5259 | std::string &Result) { | ||||||||||||
5260 | ObjCInterfaceDecl *CDecl = IDecl->getClassInterface(); | ||||||||||||
5261 | |||||||||||||
5262 | // Explicitly declared @interface's are already synthesized. | ||||||||||||
5263 | if (CDecl->isImplicitInterfaceDecl()) { | ||||||||||||
5264 | // FIXME: Implementation of a class with no @interface (legacy) does not | ||||||||||||
5265 | // produce correct synthesis as yet. | ||||||||||||
5266 | RewriteObjCInternalStruct(CDecl, Result); | ||||||||||||
5267 | } | ||||||||||||
5268 | |||||||||||||
5269 | // Build _objc_ivar_list metadata for classes ivars if needed | ||||||||||||
5270 | unsigned NumIvars = !IDecl->ivar_empty() | ||||||||||||
5271 | ? IDecl->ivar_size() | ||||||||||||
5272 | : (CDecl ? CDecl->ivar_size() : 0); | ||||||||||||
5273 | if (NumIvars > 0) { | ||||||||||||
5274 | static bool objc_ivar = false; | ||||||||||||
5275 | if (!objc_ivar) { | ||||||||||||
5276 | /* struct _objc_ivar { | ||||||||||||
5277 | char *ivar_name; | ||||||||||||
5278 | char *ivar_type; | ||||||||||||
5279 | int ivar_offset; | ||||||||||||
5280 | }; | ||||||||||||
5281 | */ | ||||||||||||
5282 | Result += "\nstruct _objc_ivar {\n"; | ||||||||||||
5283 | Result += "\tchar *ivar_name;\n"; | ||||||||||||
5284 | Result += "\tchar *ivar_type;\n"; | ||||||||||||
5285 | Result += "\tint ivar_offset;\n"; | ||||||||||||
5286 | Result += "};\n"; | ||||||||||||
5287 | |||||||||||||
5288 | objc_ivar = true; | ||||||||||||
5289 | } | ||||||||||||
5290 | |||||||||||||
5291 | /* struct { | ||||||||||||
5292 | int ivar_count; | ||||||||||||
5293 | struct _objc_ivar ivar_list[nIvars]; | ||||||||||||
5294 | }; | ||||||||||||
5295 | */ | ||||||||||||
5296 | Result += "\nstatic struct {\n"; | ||||||||||||
5297 | Result += "\tint ivar_count;\n"; | ||||||||||||
5298 | Result += "\tstruct _objc_ivar ivar_list["; | ||||||||||||
5299 | Result += utostr(NumIvars); | ||||||||||||
5300 | Result += "];\n} _OBJC_INSTANCE_VARIABLES_"; | ||||||||||||
5301 | Result += IDecl->getNameAsString(); | ||||||||||||
5302 | Result += " __attribute__ ((used, section (\"__OBJC, __instance_vars\")))= " | ||||||||||||
5303 | "{\n\t"; | ||||||||||||
5304 | Result += utostr(NumIvars); | ||||||||||||
5305 | Result += "\n"; | ||||||||||||
5306 | |||||||||||||
5307 | ObjCInterfaceDecl::ivar_iterator IVI, IVE; | ||||||||||||
5308 | SmallVector<ObjCIvarDecl *, 8> IVars; | ||||||||||||
5309 | if (!IDecl->ivar_empty()) { | ||||||||||||
5310 | for (auto *IV : IDecl->ivars()) | ||||||||||||
5311 | IVars.push_back(IV); | ||||||||||||
5312 | IVI = IDecl->ivar_begin(); | ||||||||||||
5313 | IVE = IDecl->ivar_end(); | ||||||||||||
5314 | } else { | ||||||||||||
5315 | IVI = CDecl->ivar_begin(); | ||||||||||||
5316 | IVE = CDecl->ivar_end(); | ||||||||||||
5317 | } | ||||||||||||
5318 | Result += "\t,{{\""; | ||||||||||||
5319 | Result += IVI->getNameAsString(); | ||||||||||||
5320 | Result += "\", \""; | ||||||||||||
5321 | std::string TmpString, StrEncoding; | ||||||||||||
5322 | Context->getObjCEncodingForType(IVI->getType(), TmpString, *IVI); | ||||||||||||
5323 | QuoteDoublequotes(TmpString, StrEncoding); | ||||||||||||
5324 | Result += StrEncoding; | ||||||||||||
5325 | Result += "\", "; | ||||||||||||
5326 | RewriteIvarOffsetComputation(*IVI, Result); | ||||||||||||
5327 | Result += "}\n"; | ||||||||||||
5328 | for (++IVI; IVI != IVE; ++IVI) { | ||||||||||||
5329 | Result += "\t ,{\""; | ||||||||||||
5330 | Result += IVI->getNameAsString(); | ||||||||||||
5331 | Result += "\", \""; | ||||||||||||
5332 | std::string TmpString, StrEncoding; | ||||||||||||
5333 | Context->getObjCEncodingForType(IVI->getType(), TmpString, *IVI); | ||||||||||||
5334 | QuoteDoublequotes(TmpString, StrEncoding); | ||||||||||||
5335 | Result += StrEncoding; | ||||||||||||
5336 | Result += "\", "; | ||||||||||||
5337 | RewriteIvarOffsetComputation(*IVI, Result); | ||||||||||||
5338 | Result += "}\n"; | ||||||||||||
5339 | } | ||||||||||||
5340 | |||||||||||||
5341 | Result += "\t }\n};\n"; | ||||||||||||
5342 | } | ||||||||||||
5343 | |||||||||||||
5344 | // Build _objc_method_list for class's instance methods if needed | ||||||||||||
5345 | SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods()); | ||||||||||||
5346 | |||||||||||||
5347 | // If any of our property implementations have associated getters or | ||||||||||||
5348 | // setters, produce metadata for them as well. | ||||||||||||
5349 | for (const auto *Prop : IDecl->property_impls()) { | ||||||||||||
5350 | if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic) | ||||||||||||
5351 | continue; | ||||||||||||
5352 | if (!Prop->getPropertyIvarDecl()) | ||||||||||||
5353 | continue; | ||||||||||||
5354 | ObjCPropertyDecl *PD = Prop->getPropertyDecl(); | ||||||||||||
5355 | if (!PD) | ||||||||||||
5356 | continue; | ||||||||||||
5357 | if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl()) | ||||||||||||
5358 | if (!Getter->isDefined()) | ||||||||||||
5359 | InstanceMethods.push_back(Getter); | ||||||||||||
5360 | if (PD->isReadOnly()) | ||||||||||||
5361 | continue; | ||||||||||||
5362 | if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl()) | ||||||||||||
5363 | if (!Setter->isDefined()) | ||||||||||||
5364 | InstanceMethods.push_back(Setter); | ||||||||||||
5365 | } | ||||||||||||
5366 | RewriteObjCMethodsMetaData(InstanceMethods.begin(), InstanceMethods.end(), | ||||||||||||
5367 | true, "", IDecl->getName(), Result); | ||||||||||||
5368 | |||||||||||||
5369 | // Build _objc_method_list for class's class methods if needed | ||||||||||||
5370 | RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(), | ||||||||||||
5371 | false, "", IDecl->getName(), Result); | ||||||||||||
5372 | |||||||||||||
5373 | // Protocols referenced in class declaration? | ||||||||||||
5374 | RewriteObjCProtocolListMetaData(CDecl->getReferencedProtocols(), | ||||||||||||
5375 | "CLASS", CDecl->getName(), Result); | ||||||||||||
5376 | |||||||||||||
5377 | // Declaration of class/meta-class metadata | ||||||||||||
5378 | /* struct _objc_class { | ||||||||||||
5379 | struct _objc_class *isa; // or const char *root_class_name when metadata | ||||||||||||
5380 | const char *super_class_name; | ||||||||||||
5381 | char *name; | ||||||||||||
5382 | long version; | ||||||||||||
5383 | long info; | ||||||||||||
5384 | long instance_size; | ||||||||||||
5385 | struct _objc_ivar_list *ivars; | ||||||||||||
5386 | struct _objc_method_list *methods; | ||||||||||||
5387 | struct objc_cache *cache; | ||||||||||||
5388 | struct objc_protocol_list *protocols; | ||||||||||||
5389 | const char *ivar_layout; | ||||||||||||
5390 | struct _objc_class_ext *ext; | ||||||||||||
5391 | }; | ||||||||||||
5392 | */ | ||||||||||||
5393 | static bool objc_class = false; | ||||||||||||
5394 | if (!objc_class) { | ||||||||||||
5395 | Result += "\nstruct _objc_class {\n"; | ||||||||||||
5396 | Result += "\tstruct _objc_class *isa;\n"; | ||||||||||||
5397 | Result += "\tconst char *super_class_name;\n"; | ||||||||||||
5398 | Result += "\tchar *name;\n"; | ||||||||||||
5399 | Result += "\tlong version;\n"; | ||||||||||||
5400 | Result += "\tlong info;\n"; | ||||||||||||
5401 | Result += "\tlong instance_size;\n"; | ||||||||||||
5402 | Result += "\tstruct _objc_ivar_list *ivars;\n"; | ||||||||||||
5403 | Result += "\tstruct _objc_method_list *methods;\n"; | ||||||||||||
5404 | Result += "\tstruct objc_cache *cache;\n"; | ||||||||||||
5405 | Result += "\tstruct _objc_protocol_list *protocols;\n"; | ||||||||||||
5406 | Result += "\tconst char *ivar_layout;\n"; | ||||||||||||
5407 | Result += "\tstruct _objc_class_ext *ext;\n"; | ||||||||||||
5408 | Result += "};\n"; | ||||||||||||
5409 | objc_class = true; | ||||||||||||
5410 | } | ||||||||||||
5411 | |||||||||||||
5412 | // Meta-class metadata generation. | ||||||||||||
5413 | ObjCInterfaceDecl *RootClass = nullptr; | ||||||||||||
5414 | ObjCInterfaceDecl *SuperClass = CDecl->getSuperClass(); | ||||||||||||
5415 | while (SuperClass) { | ||||||||||||
5416 | RootClass = SuperClass; | ||||||||||||
5417 | SuperClass = SuperClass->getSuperClass(); | ||||||||||||
5418 | } | ||||||||||||
5419 | SuperClass = CDecl->getSuperClass(); | ||||||||||||
5420 | |||||||||||||
5421 | Result += "\nstatic struct _objc_class _OBJC_METACLASS_"; | ||||||||||||
5422 | Result += CDecl->getNameAsString(); | ||||||||||||
5423 | Result += " __attribute__ ((used, section (\"__OBJC, __meta_class\")))= " | ||||||||||||
5424 | "{\n\t(struct _objc_class *)\""; | ||||||||||||
5425 | Result += (RootClass ? RootClass->getNameAsString() : CDecl->getNameAsString()); | ||||||||||||
5426 | Result += "\""; | ||||||||||||
5427 | |||||||||||||
5428 | if (SuperClass) { | ||||||||||||
5429 | Result += ", \""; | ||||||||||||
5430 | Result += SuperClass->getNameAsString(); | ||||||||||||
5431 | Result += "\", \""; | ||||||||||||
5432 | Result += CDecl->getNameAsString(); | ||||||||||||
5433 | Result += "\""; | ||||||||||||
5434 | } | ||||||||||||
5435 | else { | ||||||||||||
5436 | Result += ", 0, \""; | ||||||||||||
5437 | Result += CDecl->getNameAsString(); | ||||||||||||
5438 | Result += "\""; | ||||||||||||
5439 | } | ||||||||||||
5440 | // Set 'ivars' field for root class to 0. ObjC1 runtime does not use it. | ||||||||||||
5441 | // 'info' field is initialized to CLS_META(2) for metaclass | ||||||||||||
5442 | Result += ", 0,2, sizeof(struct _objc_class), 0"; | ||||||||||||
5443 | if (IDecl->classmeth_begin() != IDecl->classmeth_end()) { | ||||||||||||
5444 | Result += "\n\t, (struct _objc_method_list *)&_OBJC_CLASS_METHODS_"; | ||||||||||||
5445 | Result += IDecl->getNameAsString(); | ||||||||||||
5446 | Result += "\n"; | ||||||||||||
5447 | } | ||||||||||||
5448 | else | ||||||||||||
5449 | Result += ", 0\n"; | ||||||||||||
5450 | if (CDecl->protocol_begin() != CDecl->protocol_end()) { | ||||||||||||
5451 | Result += "\t,0, (struct _objc_protocol_list *)&_OBJC_CLASS_PROTOCOLS_"; | ||||||||||||
5452 | Result += CDecl->getNameAsString(); | ||||||||||||
5453 | Result += ",0,0\n"; | ||||||||||||
5454 | } | ||||||||||||
5455 | else | ||||||||||||
5456 | Result += "\t,0,0,0,0\n"; | ||||||||||||
5457 | Result += "};\n"; | ||||||||||||
5458 | |||||||||||||
5459 | // class metadata generation. | ||||||||||||
5460 | Result += "\nstatic struct _objc_class _OBJC_CLASS_"; | ||||||||||||
5461 | Result += CDecl->getNameAsString(); | ||||||||||||
5462 | Result += " __attribute__ ((used, section (\"__OBJC, __class\")))= " | ||||||||||||
5463 | "{\n\t&_OBJC_METACLASS_"; | ||||||||||||
5464 | Result += CDecl->getNameAsString(); | ||||||||||||
5465 | if (SuperClass) { | ||||||||||||
5466 | Result += ", \""; | ||||||||||||
5467 | Result += SuperClass->getNameAsString(); | ||||||||||||
5468 | Result += "\", \""; | ||||||||||||
5469 | Result += CDecl->getNameAsString(); | ||||||||||||
5470 | Result += "\""; | ||||||||||||
5471 | } | ||||||||||||
5472 | else { | ||||||||||||
5473 | Result += ", 0, \""; | ||||||||||||
5474 | Result += CDecl->getNameAsString(); | ||||||||||||
5475 | Result += "\""; | ||||||||||||
5476 | } | ||||||||||||
5477 | // 'info' field is initialized to CLS_CLASS(1) for class | ||||||||||||
5478 | Result += ", 0,1"; | ||||||||||||
5479 | if (!ObjCSynthesizedStructs.count(CDecl)) | ||||||||||||
5480 | Result += ",0"; | ||||||||||||
5481 | else { | ||||||||||||
5482 | // class has size. Must synthesize its size. | ||||||||||||
5483 | Result += ",sizeof(struct "; | ||||||||||||
5484 | Result += CDecl->getNameAsString(); | ||||||||||||
5485 | if (LangOpts.MicrosoftExt) | ||||||||||||
5486 | Result += "_IMPL"; | ||||||||||||
5487 | Result += ")"; | ||||||||||||
5488 | } | ||||||||||||
5489 | if (NumIvars > 0) { | ||||||||||||
5490 | Result += ", (struct _objc_ivar_list *)&_OBJC_INSTANCE_VARIABLES_"; | ||||||||||||
5491 | Result += CDecl->getNameAsString(); | ||||||||||||
5492 | Result += "\n\t"; | ||||||||||||
5493 | } | ||||||||||||
5494 | else | ||||||||||||
5495 | Result += ",0"; | ||||||||||||
5496 | if (IDecl->instmeth_begin() != IDecl->instmeth_end()) { | ||||||||||||
5497 | Result += ", (struct _objc_method_list *)&_OBJC_INSTANCE_METHODS_"; | ||||||||||||
5498 | Result += CDecl->getNameAsString(); | ||||||||||||
5499 | Result += ", 0\n\t"; | ||||||||||||
5500 | } | ||||||||||||
5501 | else | ||||||||||||
5502 | Result += ",0,0"; | ||||||||||||
5503 | if (CDecl->protocol_begin() != CDecl->protocol_end()) { | ||||||||||||
5504 | Result += ", (struct _objc_protocol_list*)&_OBJC_CLASS_PROTOCOLS_"; | ||||||||||||
5505 | Result += CDecl->getNameAsString(); | ||||||||||||
5506 | Result += ", 0,0\n"; | ||||||||||||
5507 | } | ||||||||||||
5508 | else | ||||||||||||
5509 | Result += ",0,0,0\n"; | ||||||||||||
5510 | Result += "};\n"; | ||||||||||||
5511 | } | ||||||||||||
5512 | |||||||||||||
5513 | void RewriteObjCFragileABI::RewriteMetaDataIntoBuffer(std::string &Result) { | ||||||||||||
5514 | int ClsDefCount = ClassImplementation.size(); | ||||||||||||
5515 | int CatDefCount = CategoryImplementation.size(); | ||||||||||||
5516 | |||||||||||||
5517 | // For each implemented class, write out all its meta data. | ||||||||||||
5518 | for (int i = 0; i < ClsDefCount; i++) | ||||||||||||
5519 | RewriteObjCClassMetaData(ClassImplementation[i], Result); | ||||||||||||
5520 | |||||||||||||
5521 | // For each implemented category, write out all its meta data. | ||||||||||||
5522 | for (int i = 0; i < CatDefCount; i++) | ||||||||||||
5523 | RewriteObjCCategoryImplDecl(CategoryImplementation[i], Result); | ||||||||||||
5524 | |||||||||||||
5525 | // Write objc_symtab metadata | ||||||||||||
5526 | /* | ||||||||||||
5527 | struct _objc_symtab | ||||||||||||
5528 | { | ||||||||||||
5529 | long sel_ref_cnt; | ||||||||||||
5530 | SEL *refs; | ||||||||||||
5531 | short cls_def_cnt; | ||||||||||||
5532 | short cat_def_cnt; | ||||||||||||
5533 | void *defs[cls_def_cnt + cat_def_cnt]; | ||||||||||||
5534 | }; | ||||||||||||
5535 | */ | ||||||||||||
5536 | |||||||||||||
5537 | Result += "\nstruct _objc_symtab {\n"; | ||||||||||||
5538 | Result += "\tlong sel_ref_cnt;\n"; | ||||||||||||
5539 | Result += "\tSEL *refs;\n"; | ||||||||||||
5540 | Result += "\tshort cls_def_cnt;\n"; | ||||||||||||
5541 | Result += "\tshort cat_def_cnt;\n"; | ||||||||||||
5542 | Result += "\tvoid *defs[" + utostr(ClsDefCount + CatDefCount)+ "];\n"; | ||||||||||||
5543 | Result += "};\n\n"; | ||||||||||||
5544 | |||||||||||||
5545 | Result += "static struct _objc_symtab " | ||||||||||||
5546 | "_OBJC_SYMBOLS __attribute__((used, section (\"__OBJC, __symbols\")))= {\n"; | ||||||||||||
5547 | Result += "\t0, 0, " + utostr(ClsDefCount) | ||||||||||||
5548 | + ", " + utostr(CatDefCount) + "\n"; | ||||||||||||
5549 | for (int i = 0; i < ClsDefCount; i++) { | ||||||||||||
5550 | Result += "\t,&_OBJC_CLASS_"; | ||||||||||||
5551 | Result += ClassImplementation[i]->getNameAsString(); | ||||||||||||
5552 | Result += "\n"; | ||||||||||||
5553 | } | ||||||||||||
5554 | |||||||||||||
5555 | for (int i = 0; i < CatDefCount; i++) { | ||||||||||||
5556 | Result += "\t,&_OBJC_CATEGORY_"; | ||||||||||||
5557 | Result += CategoryImplementation[i]->getClassInterface()->getNameAsString(); | ||||||||||||
5558 | Result += "_"; | ||||||||||||
5559 | Result += CategoryImplementation[i]->getNameAsString(); | ||||||||||||
5560 | Result += "\n"; | ||||||||||||
5561 | } | ||||||||||||
5562 | |||||||||||||
5563 | Result += "};\n\n"; | ||||||||||||
5564 | |||||||||||||
5565 | // Write objc_module metadata | ||||||||||||
5566 | |||||||||||||
5567 | /* | ||||||||||||
5568 | struct _objc_module { | ||||||||||||
5569 | long version; | ||||||||||||
5570 | long size; | ||||||||||||
5571 | const char *name; | ||||||||||||
5572 | struct _objc_symtab *symtab; | ||||||||||||
5573 | } | ||||||||||||
5574 | */ | ||||||||||||
5575 | |||||||||||||
5576 | Result += "\nstruct _objc_module {\n"; | ||||||||||||
5577 | Result += "\tlong version;\n"; | ||||||||||||
5578 | Result += "\tlong size;\n"; | ||||||||||||
5579 | Result += "\tconst char *name;\n"; | ||||||||||||
5580 | Result += "\tstruct _objc_symtab *symtab;\n"; | ||||||||||||
5581 | Result += "};\n\n"; | ||||||||||||
5582 | Result += "static struct _objc_module " | ||||||||||||
5583 | "_OBJC_MODULES __attribute__ ((used, section (\"__OBJC, __module_info\")))= {\n"; | ||||||||||||
5584 | Result += "\t" + utostr(OBJC_ABI_VERSION) + | ||||||||||||
5585 | ", sizeof(struct _objc_module), \"\", &_OBJC_SYMBOLS\n"; | ||||||||||||
5586 | Result += "};\n\n"; | ||||||||||||
5587 | |||||||||||||
5588 | if (LangOpts.MicrosoftExt) { | ||||||||||||
5589 | if (ProtocolExprDecls.size()) { | ||||||||||||
5590 | Result += "#pragma section(\".objc_protocol$B\",long,read,write)\n"; | ||||||||||||
5591 | Result += "#pragma data_seg(push, \".objc_protocol$B\")\n"; | ||||||||||||
5592 | for (ObjCProtocolDecl *ProtDecl : ProtocolExprDecls) { | ||||||||||||
5593 | Result += "static struct _objc_protocol *_POINTER_OBJC_PROTOCOL_"; | ||||||||||||
5594 | Result += ProtDecl->getNameAsString(); | ||||||||||||
5595 | Result += " = &_OBJC_PROTOCOL_"; | ||||||||||||
5596 | Result += ProtDecl->getNameAsString(); | ||||||||||||
5597 | Result += ";\n"; | ||||||||||||
5598 | } | ||||||||||||
5599 | Result += "#pragma data_seg(pop)\n\n"; | ||||||||||||
5600 | } | ||||||||||||
5601 | Result += "#pragma section(\".objc_module_info$B\",long,read,write)\n"; | ||||||||||||
5602 | Result += "#pragma data_seg(push, \".objc_module_info$B\")\n"; | ||||||||||||
5603 | Result += "static struct _objc_module *_POINTER_OBJC_MODULES = "; | ||||||||||||
5604 | Result += "&_OBJC_MODULES;\n"; | ||||||||||||
5605 | Result += "#pragma data_seg(pop)\n\n"; | ||||||||||||
5606 | } | ||||||||||||
5607 | } | ||||||||||||
5608 | |||||||||||||
5609 | /// RewriteObjCCategoryImplDecl - Rewrite metadata for each category | ||||||||||||
5610 | /// implementation. | ||||||||||||
5611 | void RewriteObjCFragileABI::RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *IDecl, | ||||||||||||
5612 | std::string &Result) { | ||||||||||||
5613 | ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface(); | ||||||||||||
5614 | // Find category declaration for this implementation. | ||||||||||||
5615 | ObjCCategoryDecl *CDecl | ||||||||||||
5616 | = ClassDecl->FindCategoryDeclaration(IDecl->getIdentifier()); | ||||||||||||
5617 | |||||||||||||
5618 | std::string FullCategoryName = ClassDecl->getNameAsString(); | ||||||||||||
5619 | FullCategoryName += '_'; | ||||||||||||
5620 | FullCategoryName += IDecl->getNameAsString(); | ||||||||||||
5621 | |||||||||||||
5622 | // Build _objc_method_list for class's instance methods if needed | ||||||||||||
5623 | SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods()); | ||||||||||||
5624 | |||||||||||||
5625 | // If any of our property implementations have associated getters or | ||||||||||||
5626 | // setters, produce metadata for them as well. | ||||||||||||
5627 | for (const auto *Prop : IDecl->property_impls()) { | ||||||||||||
5628 | if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic) | ||||||||||||
5629 | continue; | ||||||||||||
5630 | if (!Prop->getPropertyIvarDecl()) | ||||||||||||
5631 | continue; | ||||||||||||
5632 | ObjCPropertyDecl *PD = Prop->getPropertyDecl(); | ||||||||||||
5633 | if (!PD) | ||||||||||||
5634 | continue; | ||||||||||||
5635 | if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl()) | ||||||||||||
5636 | InstanceMethods.push_back(Getter); | ||||||||||||
5637 | if (PD->isReadOnly()) | ||||||||||||
5638 | continue; | ||||||||||||
5639 | if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl()) | ||||||||||||
5640 | InstanceMethods.push_back(Setter); | ||||||||||||
5641 | } | ||||||||||||
5642 | RewriteObjCMethodsMetaData(InstanceMethods.begin(), InstanceMethods.end(), | ||||||||||||
5643 | true, "CATEGORY_", FullCategoryName, Result); | ||||||||||||
5644 | |||||||||||||
5645 | // Build _objc_method_list for class's class methods if needed | ||||||||||||
5646 | RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(), | ||||||||||||
5647 | false, "CATEGORY_", FullCategoryName, Result); | ||||||||||||
5648 | |||||||||||||
5649 | // Protocols referenced in class declaration? | ||||||||||||
5650 | // Null CDecl is case of a category implementation with no category interface | ||||||||||||
5651 | if (CDecl) | ||||||||||||
5652 | RewriteObjCProtocolListMetaData(CDecl->getReferencedProtocols(), "CATEGORY", | ||||||||||||
5653 | FullCategoryName, Result); | ||||||||||||
5654 | /* struct _objc_category { | ||||||||||||
5655 | char *category_name; | ||||||||||||
5656 | char *class_name; | ||||||||||||
5657 | struct _objc_method_list *instance_methods; | ||||||||||||
5658 | struct _objc_method_list *class_methods; | ||||||||||||
5659 | struct _objc_protocol_list *protocols; | ||||||||||||
5660 | // Objective-C 1.0 extensions | ||||||||||||
5661 | uint32_t size; // sizeof (struct _objc_category) | ||||||||||||
5662 | struct _objc_property_list *instance_properties; // category's own | ||||||||||||
5663 | // @property decl. | ||||||||||||
5664 | }; | ||||||||||||
5665 | */ | ||||||||||||
5666 | |||||||||||||
5667 | static bool objc_category = false; | ||||||||||||
5668 | if (!objc_category) { | ||||||||||||
5669 | Result += "\nstruct _objc_category {\n"; | ||||||||||||
5670 | Result += "\tchar *category_name;\n"; | ||||||||||||
5671 | Result += "\tchar *class_name;\n"; | ||||||||||||
5672 | Result += "\tstruct _objc_method_list *instance_methods;\n"; | ||||||||||||
5673 | Result += "\tstruct _objc_method_list *class_methods;\n"; | ||||||||||||
5674 | Result += "\tstruct _objc_protocol_list *protocols;\n"; | ||||||||||||
5675 | Result += "\tunsigned int size;\n"; | ||||||||||||
5676 | Result += "\tstruct _objc_property_list *instance_properties;\n"; | ||||||||||||
5677 | Result += "};\n"; | ||||||||||||
5678 | objc_category = true; | ||||||||||||
5679 | } | ||||||||||||
5680 | Result += "\nstatic struct _objc_category _OBJC_CATEGORY_"; | ||||||||||||
5681 | Result += FullCategoryName; | ||||||||||||
5682 | Result += " __attribute__ ((used, section (\"__OBJC, __category\")))= {\n\t\""; | ||||||||||||
5683 | Result += IDecl->getNameAsString(); | ||||||||||||
5684 | Result += "\"\n\t, \""; | ||||||||||||
5685 | Result += ClassDecl->getNameAsString(); | ||||||||||||
5686 | Result += "\"\n"; | ||||||||||||
5687 | |||||||||||||
5688 | if (IDecl->instmeth_begin() != IDecl->instmeth_end()) { | ||||||||||||
5689 | Result += "\t, (struct _objc_method_list *)" | ||||||||||||
5690 | "&_OBJC_CATEGORY_INSTANCE_METHODS_"; | ||||||||||||
5691 | Result += FullCategoryName; | ||||||||||||
5692 | Result += "\n"; | ||||||||||||
5693 | } | ||||||||||||
5694 | else | ||||||||||||
5695 | Result += "\t, 0\n"; | ||||||||||||
5696 | if (IDecl->classmeth_begin() != IDecl->classmeth_end()) { | ||||||||||||
5697 | Result += "\t, (struct _objc_method_list *)" | ||||||||||||
5698 | "&_OBJC_CATEGORY_CLASS_METHODS_"; | ||||||||||||
5699 | Result += FullCategoryName; | ||||||||||||
5700 | Result += "\n"; | ||||||||||||
5701 | } | ||||||||||||
5702 | else | ||||||||||||
5703 | Result += "\t, 0\n"; | ||||||||||||
5704 | |||||||||||||
5705 | if (CDecl && CDecl->protocol_begin() != CDecl->protocol_end()) { | ||||||||||||
5706 | Result += "\t, (struct _objc_protocol_list *)&_OBJC_CATEGORY_PROTOCOLS_"; | ||||||||||||
5707 | Result += FullCategoryName; | ||||||||||||
5708 | Result += "\n"; | ||||||||||||
5709 | } | ||||||||||||
5710 | else | ||||||||||||
5711 | Result += "\t, 0\n"; | ||||||||||||
5712 | Result += "\t, sizeof(struct _objc_category), 0\n};\n"; | ||||||||||||
5713 | } | ||||||||||||
5714 | |||||||||||||
5715 | // RewriteObjCMethodsMetaData - Rewrite methods metadata for instance or | ||||||||||||
5716 | /// class methods. | ||||||||||||
5717 | template<typename MethodIterator> | ||||||||||||
5718 | void RewriteObjCFragileABI::RewriteObjCMethodsMetaData(MethodIterator MethodBegin, | ||||||||||||
5719 | MethodIterator MethodEnd, | ||||||||||||
5720 | bool IsInstanceMethod, | ||||||||||||
5721 | StringRef prefix, | ||||||||||||
5722 | StringRef ClassName, | ||||||||||||
5723 | std::string &Result) { | ||||||||||||
5724 | if (MethodBegin == MethodEnd) return; | ||||||||||||
5725 | |||||||||||||
5726 | if (!objc_impl_method) { | ||||||||||||
5727 | /* struct _objc_method { | ||||||||||||
5728 | SEL _cmd; | ||||||||||||
5729 | char *method_types; | ||||||||||||
5730 | void *_imp; | ||||||||||||
5731 | } | ||||||||||||
5732 | */ | ||||||||||||
5733 | Result += "\nstruct _objc_method {\n"; | ||||||||||||
5734 | Result += "\tSEL _cmd;\n"; | ||||||||||||
5735 | Result += "\tchar *method_types;\n"; | ||||||||||||
5736 | Result += "\tvoid *_imp;\n"; | ||||||||||||
5737 | Result += "};\n"; | ||||||||||||
5738 | |||||||||||||
5739 | objc_impl_method = true; | ||||||||||||
5740 | } | ||||||||||||
5741 | |||||||||||||
5742 | // Build _objc_method_list for class's methods if needed | ||||||||||||
5743 | |||||||||||||
5744 | /* struct { | ||||||||||||
5745 | struct _objc_method_list *next_method; | ||||||||||||
5746 | int method_count; | ||||||||||||
5747 | struct _objc_method method_list[]; | ||||||||||||
5748 | } | ||||||||||||
5749 | */ | ||||||||||||
5750 | unsigned NumMethods = std::distance(MethodBegin, MethodEnd); | ||||||||||||
5751 | Result += "\nstatic struct {\n"; | ||||||||||||
5752 | Result += "\tstruct _objc_method_list *next_method;\n"; | ||||||||||||
5753 | Result += "\tint method_count;\n"; | ||||||||||||
5754 | Result += "\tstruct _objc_method method_list["; | ||||||||||||
5755 | Result += utostr(NumMethods); | ||||||||||||
5756 | Result += "];\n} _OBJC_"; | ||||||||||||
5757 | Result += prefix; | ||||||||||||
5758 | Result += IsInstanceMethod ? "INSTANCE" : "CLASS"; | ||||||||||||
5759 | Result += "_METHODS_"; | ||||||||||||
5760 | Result += ClassName; | ||||||||||||
5761 | Result += " __attribute__ ((used, section (\"__OBJC, __"; | ||||||||||||
5762 | Result += IsInstanceMethod ? "inst" : "cls"; | ||||||||||||
5763 | Result += "_meth\")))= "; | ||||||||||||
5764 | Result += "{\n\t0, " + utostr(NumMethods) + "\n"; | ||||||||||||
5765 | |||||||||||||
5766 | Result += "\t,{{(SEL)\""; | ||||||||||||
5767 | Result += (*MethodBegin)->getSelector().getAsString(); | ||||||||||||
5768 | std::string MethodTypeString = | ||||||||||||
5769 | Context->getObjCEncodingForMethodDecl(*MethodBegin); | ||||||||||||
5770 | Result += "\", \""; | ||||||||||||
5771 | Result += MethodTypeString; | ||||||||||||
5772 | Result += "\", (void *)"; | ||||||||||||
5773 | Result += MethodInternalNames[*MethodBegin]; | ||||||||||||
5774 | Result += "}\n"; | ||||||||||||
5775 | for (++MethodBegin; MethodBegin != MethodEnd; ++MethodBegin) { | ||||||||||||
5776 | Result += "\t ,{(SEL)\""; | ||||||||||||
5777 | Result += (*MethodBegin)->getSelector().getAsString(); | ||||||||||||
5778 | std::string MethodTypeString = | ||||||||||||
5779 | Context->getObjCEncodingForMethodDecl(*MethodBegin); | ||||||||||||
5780 | Result += "\", \""; | ||||||||||||
5781 | Result += MethodTypeString; | ||||||||||||
5782 | Result += "\", (void *)"; | ||||||||||||
5783 | Result += MethodInternalNames[*MethodBegin]; | ||||||||||||
5784 | Result += "}\n"; | ||||||||||||
5785 | } | ||||||||||||
5786 | Result += "\t }\n};\n"; | ||||||||||||
5787 | } | ||||||||||||
5788 | |||||||||||||
5789 | Stmt *RewriteObjCFragileABI::RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) { | ||||||||||||
5790 | SourceRange OldRange = IV->getSourceRange(); | ||||||||||||
5791 | Expr *BaseExpr = IV->getBase(); | ||||||||||||
5792 | |||||||||||||
5793 | // Rewrite the base, but without actually doing replaces. | ||||||||||||
5794 | { | ||||||||||||
5795 | DisableReplaceStmtScope S(*this); | ||||||||||||
5796 | BaseExpr = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(BaseExpr)); | ||||||||||||
5797 | IV->setBase(BaseExpr); | ||||||||||||
5798 | } | ||||||||||||
5799 | |||||||||||||
5800 | ObjCIvarDecl *D = IV->getDecl(); | ||||||||||||
5801 | |||||||||||||
5802 | Expr *Replacement = IV; | ||||||||||||
5803 | if (CurMethodDef) { | ||||||||||||
5804 | if (BaseExpr->getType()->isObjCObjectPointerType()) { | ||||||||||||
5805 | const ObjCInterfaceType *iFaceDecl = | ||||||||||||
5806 | dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType()); | ||||||||||||
5807 | assert(iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null")((iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null" ) ? static_cast<void> (0) : __assert_fail ("iFaceDecl && \"RewriteObjCIvarRefExpr - iFaceDecl is null\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 5807, __PRETTY_FUNCTION__)); | ||||||||||||
5808 | // lookup which class implements the instance variable. | ||||||||||||
5809 | ObjCInterfaceDecl *clsDeclared = nullptr; | ||||||||||||
5810 | iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(), | ||||||||||||
5811 | clsDeclared); | ||||||||||||
5812 | assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class")((clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class" ) ? static_cast<void> (0) : __assert_fail ("clsDeclared && \"RewriteObjCIvarRefExpr(): Can't find class\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 5812, __PRETTY_FUNCTION__)); | ||||||||||||
5813 | |||||||||||||
5814 | // Synthesize an explicit cast to gain access to the ivar. | ||||||||||||
5815 | std::string RecName = clsDeclared->getIdentifier()->getName(); | ||||||||||||
5816 | RecName += "_IMPL"; | ||||||||||||
5817 | IdentifierInfo *II = &Context->Idents.get(RecName); | ||||||||||||
5818 | RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl, | ||||||||||||
5819 | SourceLocation(), SourceLocation(), | ||||||||||||
5820 | II); | ||||||||||||
5821 | assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl")((RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl" ) ? static_cast<void> (0) : __assert_fail ("RD && \"RewriteObjCIvarRefExpr(): Can't find RecordDecl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 5821, __PRETTY_FUNCTION__)); | ||||||||||||
5822 | QualType castT = Context->getPointerType(Context->getTagDeclType(RD)); | ||||||||||||
5823 | CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, castT, | ||||||||||||
5824 | CK_BitCast, | ||||||||||||
5825 | IV->getBase()); | ||||||||||||
5826 | // Don't forget the parens to enforce the proper binding. | ||||||||||||
5827 | ParenExpr *PE = new (Context) ParenExpr(OldRange.getBegin(), | ||||||||||||
5828 | OldRange.getEnd(), | ||||||||||||
5829 | castExpr); | ||||||||||||
5830 | if (IV->isFreeIvar() && | ||||||||||||
5831 | declaresSameEntity(CurMethodDef->getClassInterface(), | ||||||||||||
5832 | iFaceDecl->getDecl())) { | ||||||||||||
5833 | MemberExpr *ME = MemberExpr::CreateImplicit( | ||||||||||||
5834 | *Context, PE, true, D, D->getType(), VK_LValue, OK_Ordinary); | ||||||||||||
5835 | Replacement = ME; | ||||||||||||
5836 | } else { | ||||||||||||
5837 | IV->setBase(PE); | ||||||||||||
5838 | } | ||||||||||||
5839 | } | ||||||||||||
5840 | } else { // we are outside a method. | ||||||||||||
5841 | assert(!IV->isFreeIvar() && "Cannot have a free standing ivar outside a method")((!IV->isFreeIvar() && "Cannot have a free standing ivar outside a method" ) ? static_cast<void> (0) : __assert_fail ("!IV->isFreeIvar() && \"Cannot have a free standing ivar outside a method\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 5841, __PRETTY_FUNCTION__)); | ||||||||||||
5842 | |||||||||||||
5843 | // Explicit ivar refs need to have a cast inserted. | ||||||||||||
5844 | // FIXME: consider sharing some of this code with the code above. | ||||||||||||
5845 | if (BaseExpr->getType()->isObjCObjectPointerType()) { | ||||||||||||
5846 | const ObjCInterfaceType *iFaceDecl = | ||||||||||||
5847 | dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType()); | ||||||||||||
5848 | // lookup which class implements the instance variable. | ||||||||||||
5849 | ObjCInterfaceDecl *clsDeclared = nullptr; | ||||||||||||
5850 | iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(), | ||||||||||||
5851 | clsDeclared); | ||||||||||||
5852 | assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class")((clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class" ) ? static_cast<void> (0) : __assert_fail ("clsDeclared && \"RewriteObjCIvarRefExpr(): Can't find class\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 5852, __PRETTY_FUNCTION__)); | ||||||||||||
5853 | |||||||||||||
5854 | // Synthesize an explicit cast to gain access to the ivar. | ||||||||||||
5855 | std::string RecName = clsDeclared->getIdentifier()->getName(); | ||||||||||||
5856 | RecName += "_IMPL"; | ||||||||||||
5857 | IdentifierInfo *II = &Context->Idents.get(RecName); | ||||||||||||
5858 | RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl, | ||||||||||||
5859 | SourceLocation(), SourceLocation(), | ||||||||||||
5860 | II); | ||||||||||||
5861 | assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl")((RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl" ) ? static_cast<void> (0) : __assert_fail ("RD && \"RewriteObjCIvarRefExpr(): Can't find RecordDecl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/Frontend/Rewrite/RewriteObjC.cpp" , 5861, __PRETTY_FUNCTION__)); | ||||||||||||
5862 | QualType castT = Context->getPointerType(Context->getTagDeclType(RD)); | ||||||||||||
5863 | CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, castT, | ||||||||||||
5864 | CK_BitCast, | ||||||||||||
5865 | IV->getBase()); | ||||||||||||
5866 | // Don't forget the parens to enforce the proper binding. | ||||||||||||
5867 | ParenExpr *PE = new (Context) ParenExpr( | ||||||||||||
5868 | IV->getBase()->getBeginLoc(), IV->getBase()->getEndLoc(), castExpr); | ||||||||||||
5869 | // Cannot delete IV->getBase(), since PE points to it. | ||||||||||||
5870 | // Replace the old base with the cast. This is important when doing | ||||||||||||
5871 | // embedded rewrites. For example, [newInv->_container addObject:0]. | ||||||||||||
5872 | IV->setBase(PE); | ||||||||||||
5873 | } | ||||||||||||
5874 | } | ||||||||||||
5875 | |||||||||||||
5876 | ReplaceStmtWithRange(IV, Replacement, OldRange); | ||||||||||||
5877 | return Replacement; | ||||||||||||
5878 | } | ||||||||||||
5879 | |||||||||||||
5880 | #endif // CLANG_ENABLE_OBJC_REWRITER |
1 | //===- Type.h - C Language Family Type Representation -----------*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | /// \file |
10 | /// C Language Family Type Representation |
11 | /// |
12 | /// This file defines the clang::Type interface and subclasses, used to |
13 | /// represent types for languages in the C family. |
14 | // |
15 | //===----------------------------------------------------------------------===// |
16 | |
17 | #ifndef LLVM_CLANG_AST_TYPE_H |
18 | #define LLVM_CLANG_AST_TYPE_H |
19 | |
20 | #include "clang/AST/NestedNameSpecifier.h" |
21 | #include "clang/AST/TemplateName.h" |
22 | #include "clang/Basic/AddressSpaces.h" |
23 | #include "clang/Basic/AttrKinds.h" |
24 | #include "clang/Basic/Diagnostic.h" |
25 | #include "clang/Basic/ExceptionSpecificationType.h" |
26 | #include "clang/Basic/LLVM.h" |
27 | #include "clang/Basic/Linkage.h" |
28 | #include "clang/Basic/PartialDiagnostic.h" |
29 | #include "clang/Basic/SourceLocation.h" |
30 | #include "clang/Basic/Specifiers.h" |
31 | #include "clang/Basic/Visibility.h" |
32 | #include "llvm/ADT/APInt.h" |
33 | #include "llvm/ADT/APSInt.h" |
34 | #include "llvm/ADT/ArrayRef.h" |
35 | #include "llvm/ADT/FoldingSet.h" |
36 | #include "llvm/ADT/None.h" |
37 | #include "llvm/ADT/Optional.h" |
38 | #include "llvm/ADT/PointerIntPair.h" |
39 | #include "llvm/ADT/PointerUnion.h" |
40 | #include "llvm/ADT/StringRef.h" |
41 | #include "llvm/ADT/Twine.h" |
42 | #include "llvm/ADT/iterator_range.h" |
43 | #include "llvm/Support/Casting.h" |
44 | #include "llvm/Support/Compiler.h" |
45 | #include "llvm/Support/ErrorHandling.h" |
46 | #include "llvm/Support/PointerLikeTypeTraits.h" |
47 | #include "llvm/Support/type_traits.h" |
48 | #include "llvm/Support/TrailingObjects.h" |
49 | #include <cassert> |
50 | #include <cstddef> |
51 | #include <cstdint> |
52 | #include <cstring> |
53 | #include <string> |
54 | #include <type_traits> |
55 | #include <utility> |
56 | |
57 | namespace clang { |
58 | |
59 | class ExtQuals; |
60 | class QualType; |
61 | class TagDecl; |
62 | class Type; |
63 | |
64 | enum { |
65 | TypeAlignmentInBits = 4, |
66 | TypeAlignment = 1 << TypeAlignmentInBits |
67 | }; |
68 | |
69 | } // namespace clang |
70 | |
71 | namespace llvm { |
72 | |
73 | template <typename T> |
74 | struct PointerLikeTypeTraits; |
75 | template<> |
76 | struct PointerLikeTypeTraits< ::clang::Type*> { |
77 | static inline void *getAsVoidPointer(::clang::Type *P) { return P; } |
78 | |
79 | static inline ::clang::Type *getFromVoidPointer(void *P) { |
80 | return static_cast< ::clang::Type*>(P); |
81 | } |
82 | |
83 | enum { NumLowBitsAvailable = clang::TypeAlignmentInBits }; |
84 | }; |
85 | |
86 | template<> |
87 | struct PointerLikeTypeTraits< ::clang::ExtQuals*> { |
88 | static inline void *getAsVoidPointer(::clang::ExtQuals *P) { return P; } |
89 | |
90 | static inline ::clang::ExtQuals *getFromVoidPointer(void *P) { |
91 | return static_cast< ::clang::ExtQuals*>(P); |
92 | } |
93 | |
94 | enum { NumLowBitsAvailable = clang::TypeAlignmentInBits }; |
95 | }; |
96 | |
97 | } // namespace llvm |
98 | |
99 | namespace clang { |
100 | |
101 | class ASTContext; |
102 | template <typename> class CanQual; |
103 | class CXXRecordDecl; |
104 | class DeclContext; |
105 | class EnumDecl; |
106 | class Expr; |
107 | class ExtQualsTypeCommonBase; |
108 | class FunctionDecl; |
109 | class IdentifierInfo; |
110 | class NamedDecl; |
111 | class ObjCInterfaceDecl; |
112 | class ObjCProtocolDecl; |
113 | class ObjCTypeParamDecl; |
114 | struct PrintingPolicy; |
115 | class RecordDecl; |
116 | class Stmt; |
117 | class TagDecl; |
118 | class TemplateArgument; |
119 | class TemplateArgumentListInfo; |
120 | class TemplateArgumentLoc; |
121 | class TemplateTypeParmDecl; |
122 | class TypedefNameDecl; |
123 | class UnresolvedUsingTypenameDecl; |
124 | |
125 | using CanQualType = CanQual<Type>; |
126 | |
127 | // Provide forward declarations for all of the *Type classes. |
128 | #define TYPE(Class, Base) class Class##Type; |
129 | #include "clang/AST/TypeNodes.inc" |
130 | |
131 | /// The collection of all-type qualifiers we support. |
132 | /// Clang supports five independent qualifiers: |
133 | /// * C99: const, volatile, and restrict |
134 | /// * MS: __unaligned |
135 | /// * Embedded C (TR18037): address spaces |
136 | /// * Objective C: the GC attributes (none, weak, or strong) |
137 | class Qualifiers { |
138 | public: |
139 | enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ. |
140 | Const = 0x1, |
141 | Restrict = 0x2, |
142 | Volatile = 0x4, |
143 | CVRMask = Const | Volatile | Restrict |
144 | }; |
145 | |
146 | enum GC { |
147 | GCNone = 0, |
148 | Weak, |
149 | Strong |
150 | }; |
151 | |
152 | enum ObjCLifetime { |
153 | /// There is no lifetime qualification on this type. |
154 | OCL_None, |
155 | |
156 | /// This object can be modified without requiring retains or |
157 | /// releases. |
158 | OCL_ExplicitNone, |
159 | |
160 | /// Assigning into this object requires the old value to be |
161 | /// released and the new value to be retained. The timing of the |
162 | /// release of the old value is inexact: it may be moved to |
163 | /// immediately after the last known point where the value is |
164 | /// live. |
165 | OCL_Strong, |
166 | |
167 | /// Reading or writing from this object requires a barrier call. |
168 | OCL_Weak, |
169 | |
170 | /// Assigning into this object requires a lifetime extension. |
171 | OCL_Autoreleasing |
172 | }; |
173 | |
174 | enum { |
175 | /// The maximum supported address space number. |
176 | /// 23 bits should be enough for anyone. |
177 | MaxAddressSpace = 0x7fffffu, |
178 | |
179 | /// The width of the "fast" qualifier mask. |
180 | FastWidth = 3, |
181 | |
182 | /// The fast qualifier mask. |
183 | FastMask = (1 << FastWidth) - 1 |
184 | }; |
185 | |
186 | /// Returns the common set of qualifiers while removing them from |
187 | /// the given sets. |
188 | static Qualifiers removeCommonQualifiers(Qualifiers &L, Qualifiers &R) { |
189 | // If both are only CVR-qualified, bit operations are sufficient. |
190 | if (!(L.Mask & ~CVRMask) && !(R.Mask & ~CVRMask)) { |
191 | Qualifiers Q; |
192 | Q.Mask = L.Mask & R.Mask; |
193 | L.Mask &= ~Q.Mask; |
194 | R.Mask &= ~Q.Mask; |
195 | return Q; |
196 | } |
197 | |
198 | Qualifiers Q; |
199 | unsigned CommonCRV = L.getCVRQualifiers() & R.getCVRQualifiers(); |
200 | Q.addCVRQualifiers(CommonCRV); |
201 | L.removeCVRQualifiers(CommonCRV); |
202 | R.removeCVRQualifiers(CommonCRV); |
203 | |
204 | if (L.getObjCGCAttr() == R.getObjCGCAttr()) { |
205 | Q.setObjCGCAttr(L.getObjCGCAttr()); |
206 | L.removeObjCGCAttr(); |
207 | R.removeObjCGCAttr(); |
208 | } |
209 | |
210 | if (L.getObjCLifetime() == R.getObjCLifetime()) { |
211 | Q.setObjCLifetime(L.getObjCLifetime()); |
212 | L.removeObjCLifetime(); |
213 | R.removeObjCLifetime(); |
214 | } |
215 | |
216 | if (L.getAddressSpace() == R.getAddressSpace()) { |
217 | Q.setAddressSpace(L.getAddressSpace()); |
218 | L.removeAddressSpace(); |
219 | R.removeAddressSpace(); |
220 | } |
221 | return Q; |
222 | } |
223 | |
224 | static Qualifiers fromFastMask(unsigned Mask) { |
225 | Qualifiers Qs; |
226 | Qs.addFastQualifiers(Mask); |
227 | return Qs; |
228 | } |
229 | |
230 | static Qualifiers fromCVRMask(unsigned CVR) { |
231 | Qualifiers Qs; |
232 | Qs.addCVRQualifiers(CVR); |
233 | return Qs; |
234 | } |
235 | |
236 | static Qualifiers fromCVRUMask(unsigned CVRU) { |
237 | Qualifiers Qs; |
238 | Qs.addCVRUQualifiers(CVRU); |
239 | return Qs; |
240 | } |
241 | |
242 | // Deserialize qualifiers from an opaque representation. |
243 | static Qualifiers fromOpaqueValue(unsigned opaque) { |
244 | Qualifiers Qs; |
245 | Qs.Mask = opaque; |
246 | return Qs; |
247 | } |
248 | |
249 | // Serialize these qualifiers into an opaque representation. |
250 | unsigned getAsOpaqueValue() const { |
251 | return Mask; |
252 | } |
253 | |
254 | bool hasConst() const { return Mask & Const; } |
255 | bool hasOnlyConst() const { return Mask == Const; } |
256 | void removeConst() { Mask &= ~Const; } |
257 | void addConst() { Mask |= Const; } |
258 | |
259 | bool hasVolatile() const { return Mask & Volatile; } |
260 | bool hasOnlyVolatile() const { return Mask == Volatile; } |
261 | void removeVolatile() { Mask &= ~Volatile; } |
262 | void addVolatile() { Mask |= Volatile; } |
263 | |
264 | bool hasRestrict() const { return Mask & Restrict; } |
265 | bool hasOnlyRestrict() const { return Mask == Restrict; } |
266 | void removeRestrict() { Mask &= ~Restrict; } |
267 | void addRestrict() { Mask |= Restrict; } |
268 | |
269 | bool hasCVRQualifiers() const { return getCVRQualifiers(); } |
270 | unsigned getCVRQualifiers() const { return Mask & CVRMask; } |
271 | unsigned getCVRUQualifiers() const { return Mask & (CVRMask | UMask); } |
272 | |
273 | void setCVRQualifiers(unsigned mask) { |
274 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 274, __PRETTY_FUNCTION__)); |
275 | Mask = (Mask & ~CVRMask) | mask; |
276 | } |
277 | void removeCVRQualifiers(unsigned mask) { |
278 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 278, __PRETTY_FUNCTION__)); |
279 | Mask &= ~mask; |
280 | } |
281 | void removeCVRQualifiers() { |
282 | removeCVRQualifiers(CVRMask); |
283 | } |
284 | void addCVRQualifiers(unsigned mask) { |
285 | assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 285, __PRETTY_FUNCTION__)); |
286 | Mask |= mask; |
287 | } |
288 | void addCVRUQualifiers(unsigned mask) { |
289 | assert(!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits")((!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask & ~UMask) && \"bitmask contains non-CVRU bits\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 289, __PRETTY_FUNCTION__)); |
290 | Mask |= mask; |
291 | } |
292 | |
293 | bool hasUnaligned() const { return Mask & UMask; } |
294 | void setUnaligned(bool flag) { |
295 | Mask = (Mask & ~UMask) | (flag ? UMask : 0); |
296 | } |
297 | void removeUnaligned() { Mask &= ~UMask; } |
298 | void addUnaligned() { Mask |= UMask; } |
299 | |
300 | bool hasObjCGCAttr() const { return Mask & GCAttrMask; } |
301 | GC getObjCGCAttr() const { return GC((Mask & GCAttrMask) >> GCAttrShift); } |
302 | void setObjCGCAttr(GC type) { |
303 | Mask = (Mask & ~GCAttrMask) | (type << GCAttrShift); |
304 | } |
305 | void removeObjCGCAttr() { setObjCGCAttr(GCNone); } |
306 | void addObjCGCAttr(GC type) { |
307 | assert(type)((type) ? static_cast<void> (0) : __assert_fail ("type" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 307, __PRETTY_FUNCTION__)); |
308 | setObjCGCAttr(type); |
309 | } |
310 | Qualifiers withoutObjCGCAttr() const { |
311 | Qualifiers qs = *this; |
312 | qs.removeObjCGCAttr(); |
313 | return qs; |
314 | } |
315 | Qualifiers withoutObjCLifetime() const { |
316 | Qualifiers qs = *this; |
317 | qs.removeObjCLifetime(); |
318 | return qs; |
319 | } |
320 | Qualifiers withoutAddressSpace() const { |
321 | Qualifiers qs = *this; |
322 | qs.removeAddressSpace(); |
323 | return qs; |
324 | } |
325 | |
326 | bool hasObjCLifetime() const { return Mask & LifetimeMask; } |
327 | ObjCLifetime getObjCLifetime() const { |
328 | return ObjCLifetime((Mask & LifetimeMask) >> LifetimeShift); |
329 | } |
330 | void setObjCLifetime(ObjCLifetime type) { |
331 | Mask = (Mask & ~LifetimeMask) | (type << LifetimeShift); |
332 | } |
333 | void removeObjCLifetime() { setObjCLifetime(OCL_None); } |
334 | void addObjCLifetime(ObjCLifetime type) { |
335 | assert(type)((type) ? static_cast<void> (0) : __assert_fail ("type" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 335, __PRETTY_FUNCTION__)); |
336 | assert(!hasObjCLifetime())((!hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("!hasObjCLifetime()", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 336, __PRETTY_FUNCTION__)); |
337 | Mask |= (type << LifetimeShift); |
338 | } |
339 | |
340 | /// True if the lifetime is neither None or ExplicitNone. |
341 | bool hasNonTrivialObjCLifetime() const { |
342 | ObjCLifetime lifetime = getObjCLifetime(); |
343 | return (lifetime > OCL_ExplicitNone); |
344 | } |
345 | |
346 | /// True if the lifetime is either strong or weak. |
347 | bool hasStrongOrWeakObjCLifetime() const { |
348 | ObjCLifetime lifetime = getObjCLifetime(); |
349 | return (lifetime == OCL_Strong || lifetime == OCL_Weak); |
350 | } |
351 | |
352 | bool hasAddressSpace() const { return Mask & AddressSpaceMask; } |
353 | LangAS getAddressSpace() const { |
354 | return static_cast<LangAS>(Mask >> AddressSpaceShift); |
355 | } |
356 | bool hasTargetSpecificAddressSpace() const { |
357 | return isTargetAddressSpace(getAddressSpace()); |
358 | } |
359 | /// Get the address space attribute value to be printed by diagnostics. |
360 | unsigned getAddressSpaceAttributePrintValue() const { |
361 | auto Addr = getAddressSpace(); |
362 | // This function is not supposed to be used with language specific |
363 | // address spaces. If that happens, the diagnostic message should consider |
364 | // printing the QualType instead of the address space value. |
365 | assert(Addr == LangAS::Default || hasTargetSpecificAddressSpace())((Addr == LangAS::Default || hasTargetSpecificAddressSpace()) ? static_cast<void> (0) : __assert_fail ("Addr == LangAS::Default || hasTargetSpecificAddressSpace()" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 365, __PRETTY_FUNCTION__)); |
366 | if (Addr != LangAS::Default) |
367 | return toTargetAddressSpace(Addr); |
368 | // TODO: The diagnostic messages where Addr may be 0 should be fixed |
369 | // since it cannot differentiate the situation where 0 denotes the default |
370 | // address space or user specified __attribute__((address_space(0))). |
371 | return 0; |
372 | } |
373 | void setAddressSpace(LangAS space) { |
374 | assert((unsigned)space <= MaxAddressSpace)(((unsigned)space <= MaxAddressSpace) ? static_cast<void > (0) : __assert_fail ("(unsigned)space <= MaxAddressSpace" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 374, __PRETTY_FUNCTION__)); |
375 | Mask = (Mask & ~AddressSpaceMask) |
376 | | (((uint32_t) space) << AddressSpaceShift); |
377 | } |
378 | void removeAddressSpace() { setAddressSpace(LangAS::Default); } |
379 | void addAddressSpace(LangAS space) { |
380 | assert(space != LangAS::Default)((space != LangAS::Default) ? static_cast<void> (0) : __assert_fail ("space != LangAS::Default", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 380, __PRETTY_FUNCTION__)); |
381 | setAddressSpace(space); |
382 | } |
383 | |
384 | // Fast qualifiers are those that can be allocated directly |
385 | // on a QualType object. |
386 | bool hasFastQualifiers() const { return getFastQualifiers(); } |
387 | unsigned getFastQualifiers() const { return Mask & FastMask; } |
388 | void setFastQualifiers(unsigned mask) { |
389 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 389, __PRETTY_FUNCTION__)); |
390 | Mask = (Mask & ~FastMask) | mask; |
391 | } |
392 | void removeFastQualifiers(unsigned mask) { |
393 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 393, __PRETTY_FUNCTION__)); |
394 | Mask &= ~mask; |
395 | } |
396 | void removeFastQualifiers() { |
397 | removeFastQualifiers(FastMask); |
398 | } |
399 | void addFastQualifiers(unsigned mask) { |
400 | assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits" ) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 400, __PRETTY_FUNCTION__)); |
401 | Mask |= mask; |
402 | } |
403 | |
404 | /// Return true if the set contains any qualifiers which require an ExtQuals |
405 | /// node to be allocated. |
406 | bool hasNonFastQualifiers() const { return Mask & ~FastMask; } |
407 | Qualifiers getNonFastQualifiers() const { |
408 | Qualifiers Quals = *this; |
409 | Quals.setFastQualifiers(0); |
410 | return Quals; |
411 | } |
412 | |
413 | /// Return true if the set contains any qualifiers. |
414 | bool hasQualifiers() const { return Mask; } |
415 | bool empty() const { return !Mask; } |
416 | |
417 | /// Add the qualifiers from the given set to this set. |
418 | void addQualifiers(Qualifiers Q) { |
419 | // If the other set doesn't have any non-boolean qualifiers, just |
420 | // bit-or it in. |
421 | if (!(Q.Mask & ~CVRMask)) |
422 | Mask |= Q.Mask; |
423 | else { |
424 | Mask |= (Q.Mask & CVRMask); |
425 | if (Q.hasAddressSpace()) |
426 | addAddressSpace(Q.getAddressSpace()); |
427 | if (Q.hasObjCGCAttr()) |
428 | addObjCGCAttr(Q.getObjCGCAttr()); |
429 | if (Q.hasObjCLifetime()) |
430 | addObjCLifetime(Q.getObjCLifetime()); |
431 | } |
432 | } |
433 | |
434 | /// Remove the qualifiers from the given set from this set. |
435 | void removeQualifiers(Qualifiers Q) { |
436 | // If the other set doesn't have any non-boolean qualifiers, just |
437 | // bit-and the inverse in. |
438 | if (!(Q.Mask & ~CVRMask)) |
439 | Mask &= ~Q.Mask; |
440 | else { |
441 | Mask &= ~(Q.Mask & CVRMask); |
442 | if (getObjCGCAttr() == Q.getObjCGCAttr()) |
443 | removeObjCGCAttr(); |
444 | if (getObjCLifetime() == Q.getObjCLifetime()) |
445 | removeObjCLifetime(); |
446 | if (getAddressSpace() == Q.getAddressSpace()) |
447 | removeAddressSpace(); |
448 | } |
449 | } |
450 | |
451 | /// Add the qualifiers from the given set to this set, given that |
452 | /// they don't conflict. |
453 | void addConsistentQualifiers(Qualifiers qs) { |
454 | assert(getAddressSpace() == qs.getAddressSpace() ||((getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace () || !qs.hasAddressSpace()) ? static_cast<void> (0) : __assert_fail ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 455, __PRETTY_FUNCTION__)) |
455 | !hasAddressSpace() || !qs.hasAddressSpace())((getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace () || !qs.hasAddressSpace()) ? static_cast<void> (0) : __assert_fail ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 455, __PRETTY_FUNCTION__)); |
456 | assert(getObjCGCAttr() == qs.getObjCGCAttr() ||((getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()) ? static_cast<void> (0) : __assert_fail ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 457, __PRETTY_FUNCTION__)) |
457 | !hasObjCGCAttr() || !qs.hasObjCGCAttr())((getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()) ? static_cast<void> (0) : __assert_fail ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 457, __PRETTY_FUNCTION__)); |
458 | assert(getObjCLifetime() == qs.getObjCLifetime() ||((getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime () || !qs.hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 459, __PRETTY_FUNCTION__)) |
459 | !hasObjCLifetime() || !qs.hasObjCLifetime())((getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime () || !qs.hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 459, __PRETTY_FUNCTION__)); |
460 | Mask |= qs.Mask; |
461 | } |
462 | |
463 | /// Returns true if address space A is equal to or a superset of B. |
464 | /// OpenCL v2.0 defines conversion rules (OpenCLC v2.0 s6.5.5) and notion of |
465 | /// overlapping address spaces. |
466 | /// CL1.1 or CL1.2: |
467 | /// every address space is a superset of itself. |
468 | /// CL2.0 adds: |
469 | /// __generic is a superset of any address space except for __constant. |
470 | static bool isAddressSpaceSupersetOf(LangAS A, LangAS B) { |
471 | // Address spaces must match exactly. |
472 | return A == B || |
473 | // Otherwise in OpenCLC v2.0 s6.5.5: every address space except |
474 | // for __constant can be used as __generic. |
475 | (A == LangAS::opencl_generic && B != LangAS::opencl_constant); |
476 | } |
477 | |
478 | /// Returns true if the address space in these qualifiers is equal to or |
479 | /// a superset of the address space in the argument qualifiers. |
480 | bool isAddressSpaceSupersetOf(Qualifiers other) const { |
481 | return isAddressSpaceSupersetOf(getAddressSpace(), other.getAddressSpace()); |
482 | } |
483 | |
484 | /// Determines if these qualifiers compatibly include another set. |
485 | /// Generally this answers the question of whether an object with the other |
486 | /// qualifiers can be safely used as an object with these qualifiers. |
487 | bool compatiblyIncludes(Qualifiers other) const { |
488 | return isAddressSpaceSupersetOf(other) && |
489 | // ObjC GC qualifiers can match, be added, or be removed, but can't |
490 | // be changed. |
491 | (getObjCGCAttr() == other.getObjCGCAttr() || !hasObjCGCAttr() || |
492 | !other.hasObjCGCAttr()) && |
493 | // ObjC lifetime qualifiers must match exactly. |
494 | getObjCLifetime() == other.getObjCLifetime() && |
495 | // CVR qualifiers may subset. |
496 | (((Mask & CVRMask) | (other.Mask & CVRMask)) == (Mask & CVRMask)) && |
497 | // U qualifier may superset. |
498 | (!other.hasUnaligned() || hasUnaligned()); |
499 | } |
500 | |
501 | /// Determines if these qualifiers compatibly include another set of |
502 | /// qualifiers from the narrow perspective of Objective-C ARC lifetime. |
503 | /// |
504 | /// One set of Objective-C lifetime qualifiers compatibly includes the other |
505 | /// if the lifetime qualifiers match, or if both are non-__weak and the |
506 | /// including set also contains the 'const' qualifier, or both are non-__weak |
507 | /// and one is None (which can only happen in non-ARC modes). |
508 | bool compatiblyIncludesObjCLifetime(Qualifiers other) const { |
509 | if (getObjCLifetime() == other.getObjCLifetime()) |
510 | return true; |
511 | |
512 | if (getObjCLifetime() == OCL_Weak || other.getObjCLifetime() == OCL_Weak) |
513 | return false; |
514 | |
515 | if (getObjCLifetime() == OCL_None || other.getObjCLifetime() == OCL_None) |
516 | return true; |
517 | |
518 | return hasConst(); |
519 | } |
520 | |
521 | /// Determine whether this set of qualifiers is a strict superset of |
522 | /// another set of qualifiers, not considering qualifier compatibility. |
523 | bool isStrictSupersetOf(Qualifiers Other) const; |
524 | |
525 | bool operator==(Qualifiers Other) const { return Mask == Other.Mask; } |
526 | bool operator!=(Qualifiers Other) const { return Mask != Other.Mask; } |
527 | |
528 | explicit operator bool() const { return hasQualifiers(); } |
529 | |
530 | Qualifiers &operator+=(Qualifiers R) { |
531 | addQualifiers(R); |
532 | return *this; |
533 | } |
534 | |
535 | // Union two qualifier sets. If an enumerated qualifier appears |
536 | // in both sets, use the one from the right. |
537 | friend Qualifiers operator+(Qualifiers L, Qualifiers R) { |
538 | L += R; |
539 | return L; |
540 | } |
541 | |
542 | Qualifiers &operator-=(Qualifiers R) { |
543 | removeQualifiers(R); |
544 | return *this; |
545 | } |
546 | |
547 | /// Compute the difference between two qualifier sets. |
548 | friend Qualifiers operator-(Qualifiers L, Qualifiers R) { |
549 | L -= R; |
550 | return L; |
551 | } |
552 | |
553 | std::string getAsString() const; |
554 | std::string getAsString(const PrintingPolicy &Policy) const; |
555 | |
556 | bool isEmptyWhenPrinted(const PrintingPolicy &Policy) const; |
557 | void print(raw_ostream &OS, const PrintingPolicy &Policy, |
558 | bool appendSpaceIfNonEmpty = false) const; |
559 | |
560 | void Profile(llvm::FoldingSetNodeID &ID) const { |
561 | ID.AddInteger(Mask); |
562 | } |
563 | |
564 | private: |
565 | // bits: |0 1 2|3|4 .. 5|6 .. 8|9 ... 31| |
566 | // |C R V|U|GCAttr|Lifetime|AddressSpace| |
567 | uint32_t Mask = 0; |
568 | |
569 | static const uint32_t UMask = 0x8; |
570 | static const uint32_t UShift = 3; |
571 | static const uint32_t GCAttrMask = 0x30; |
572 | static const uint32_t GCAttrShift = 4; |
573 | static const uint32_t LifetimeMask = 0x1C0; |
574 | static const uint32_t LifetimeShift = 6; |
575 | static const uint32_t AddressSpaceMask = |
576 | ~(CVRMask | UMask | GCAttrMask | LifetimeMask); |
577 | static const uint32_t AddressSpaceShift = 9; |
578 | }; |
579 | |
580 | /// A std::pair-like structure for storing a qualified type split |
581 | /// into its local qualifiers and its locally-unqualified type. |
582 | struct SplitQualType { |
583 | /// The locally-unqualified type. |
584 | const Type *Ty = nullptr; |
585 | |
586 | /// The local qualifiers. |
587 | Qualifiers Quals; |
588 | |
589 | SplitQualType() = default; |
590 | SplitQualType(const Type *ty, Qualifiers qs) : Ty(ty), Quals(qs) {} |
591 | |
592 | SplitQualType getSingleStepDesugaredType() const; // end of this file |
593 | |
594 | // Make std::tie work. |
595 | std::pair<const Type *,Qualifiers> asPair() const { |
596 | return std::pair<const Type *, Qualifiers>(Ty, Quals); |
597 | } |
598 | |
599 | friend bool operator==(SplitQualType a, SplitQualType b) { |
600 | return a.Ty == b.Ty && a.Quals == b.Quals; |
601 | } |
602 | friend bool operator!=(SplitQualType a, SplitQualType b) { |
603 | return a.Ty != b.Ty || a.Quals != b.Quals; |
604 | } |
605 | }; |
606 | |
607 | /// The kind of type we are substituting Objective-C type arguments into. |
608 | /// |
609 | /// The kind of substitution affects the replacement of type parameters when |
610 | /// no concrete type information is provided, e.g., when dealing with an |
611 | /// unspecialized type. |
612 | enum class ObjCSubstitutionContext { |
613 | /// An ordinary type. |
614 | Ordinary, |
615 | |
616 | /// The result type of a method or function. |
617 | Result, |
618 | |
619 | /// The parameter type of a method or function. |
620 | Parameter, |
621 | |
622 | /// The type of a property. |
623 | Property, |
624 | |
625 | /// The superclass of a type. |
626 | Superclass, |
627 | }; |
628 | |
629 | /// A (possibly-)qualified type. |
630 | /// |
631 | /// For efficiency, we don't store CV-qualified types as nodes on their |
632 | /// own: instead each reference to a type stores the qualifiers. This |
633 | /// greatly reduces the number of nodes we need to allocate for types (for |
634 | /// example we only need one for 'int', 'const int', 'volatile int', |
635 | /// 'const volatile int', etc). |
636 | /// |
637 | /// As an added efficiency bonus, instead of making this a pair, we |
638 | /// just store the two bits we care about in the low bits of the |
639 | /// pointer. To handle the packing/unpacking, we make QualType be a |
640 | /// simple wrapper class that acts like a smart pointer. A third bit |
641 | /// indicates whether there are extended qualifiers present, in which |
642 | /// case the pointer points to a special structure. |
643 | class QualType { |
644 | friend class QualifierCollector; |
645 | |
646 | // Thankfully, these are efficiently composable. |
647 | llvm::PointerIntPair<llvm::PointerUnion<const Type *, const ExtQuals *>, |
648 | Qualifiers::FastWidth> Value; |
649 | |
650 | const ExtQuals *getExtQualsUnsafe() const { |
651 | return Value.getPointer().get<const ExtQuals*>(); |
652 | } |
653 | |
654 | const Type *getTypePtrUnsafe() const { |
655 | return Value.getPointer().get<const Type*>(); |
656 | } |
657 | |
658 | const ExtQualsTypeCommonBase *getCommonPtr() const { |
659 | assert(!isNull() && "Cannot retrieve a NULL type pointer")((!isNull() && "Cannot retrieve a NULL type pointer") ? static_cast<void> (0) : __assert_fail ("!isNull() && \"Cannot retrieve a NULL type pointer\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 659, __PRETTY_FUNCTION__)); |
660 | auto CommonPtrVal = reinterpret_cast<uintptr_t>(Value.getOpaqueValue()); |
661 | CommonPtrVal &= ~(uintptr_t)((1 << TypeAlignmentInBits) - 1); |
662 | return reinterpret_cast<ExtQualsTypeCommonBase*>(CommonPtrVal); |
663 | } |
664 | |
665 | public: |
666 | QualType() = default; |
667 | QualType(const Type *Ptr, unsigned Quals) : Value(Ptr, Quals) {} |
668 | QualType(const ExtQuals *Ptr, unsigned Quals) : Value(Ptr, Quals) {} |
669 | |
670 | unsigned getLocalFastQualifiers() const { return Value.getInt(); } |
671 | void setLocalFastQualifiers(unsigned Quals) { Value.setInt(Quals); } |
672 | |
673 | /// Retrieves a pointer to the underlying (unqualified) type. |
674 | /// |
675 | /// This function requires that the type not be NULL. If the type might be |
676 | /// NULL, use the (slightly less efficient) \c getTypePtrOrNull(). |
677 | const Type *getTypePtr() const; |
678 | |
679 | const Type *getTypePtrOrNull() const; |
680 | |
681 | /// Retrieves a pointer to the name of the base type. |
682 | const IdentifierInfo *getBaseTypeIdentifier() const; |
683 | |
684 | /// Divides a QualType into its unqualified type and a set of local |
685 | /// qualifiers. |
686 | SplitQualType split() const; |
687 | |
688 | void *getAsOpaquePtr() const { return Value.getOpaqueValue(); } |
689 | |
690 | static QualType getFromOpaquePtr(const void *Ptr) { |
691 | QualType T; |
692 | T.Value.setFromOpaqueValue(const_cast<void*>(Ptr)); |
693 | return T; |
694 | } |
695 | |
696 | const Type &operator*() const { |
697 | return *getTypePtr(); |
698 | } |
699 | |
700 | const Type *operator->() const { |
701 | return getTypePtr(); |
702 | } |
703 | |
704 | bool isCanonical() const; |
705 | bool isCanonicalAsParam() const; |
706 | |
707 | /// Return true if this QualType doesn't point to a type yet. |
708 | bool isNull() const { |
709 | return Value.getPointer().isNull(); |
710 | } |
711 | |
712 | /// Determine whether this particular QualType instance has the |
713 | /// "const" qualifier set, without looking through typedefs that may have |
714 | /// added "const" at a different level. |
715 | bool isLocalConstQualified() const { |
716 | return (getLocalFastQualifiers() & Qualifiers::Const); |
717 | } |
718 | |
719 | /// Determine whether this type is const-qualified. |
720 | bool isConstQualified() const; |
721 | |
722 | /// Determine whether this particular QualType instance has the |
723 | /// "restrict" qualifier set, without looking through typedefs that may have |
724 | /// added "restrict" at a different level. |
725 | bool isLocalRestrictQualified() const { |
726 | return (getLocalFastQualifiers() & Qualifiers::Restrict); |
727 | } |
728 | |
729 | /// Determine whether this type is restrict-qualified. |
730 | bool isRestrictQualified() const; |
731 | |
732 | /// Determine whether this particular QualType instance has the |
733 | /// "volatile" qualifier set, without looking through typedefs that may have |
734 | /// added "volatile" at a different level. |
735 | bool isLocalVolatileQualified() const { |
736 | return (getLocalFastQualifiers() & Qualifiers::Volatile); |
737 | } |
738 | |
739 | /// Determine whether this type is volatile-qualified. |
740 | bool isVolatileQualified() const; |
741 | |
742 | /// Determine whether this particular QualType instance has any |
743 | /// qualifiers, without looking through any typedefs that might add |
744 | /// qualifiers at a different level. |
745 | bool hasLocalQualifiers() const { |
746 | return getLocalFastQualifiers() || hasLocalNonFastQualifiers(); |
747 | } |
748 | |
749 | /// Determine whether this type has any qualifiers. |
750 | bool hasQualifiers() const; |
751 | |
752 | /// Determine whether this particular QualType instance has any |
753 | /// "non-fast" qualifiers, e.g., those that are stored in an ExtQualType |
754 | /// instance. |
755 | bool hasLocalNonFastQualifiers() const { |
756 | return Value.getPointer().is<const ExtQuals*>(); |
757 | } |
758 | |
759 | /// Retrieve the set of qualifiers local to this particular QualType |
760 | /// instance, not including any qualifiers acquired through typedefs or |
761 | /// other sugar. |
762 | Qualifiers getLocalQualifiers() const; |
763 | |
764 | /// Retrieve the set of qualifiers applied to this type. |
765 | Qualifiers getQualifiers() const; |
766 | |
767 | /// Retrieve the set of CVR (const-volatile-restrict) qualifiers |
768 | /// local to this particular QualType instance, not including any qualifiers |
769 | /// acquired through typedefs or other sugar. |
770 | unsigned getLocalCVRQualifiers() const { |
771 | return getLocalFastQualifiers(); |
772 | } |
773 | |
774 | /// Retrieve the set of CVR (const-volatile-restrict) qualifiers |
775 | /// applied to this type. |
776 | unsigned getCVRQualifiers() const; |
777 | |
778 | bool isConstant(const ASTContext& Ctx) const { |
779 | return QualType::isConstant(*this, Ctx); |
780 | } |
781 | |
782 | /// Determine whether this is a Plain Old Data (POD) type (C++ 3.9p10). |
783 | bool isPODType(const ASTContext &Context) const; |
784 | |
785 | /// Return true if this is a POD type according to the rules of the C++98 |
786 | /// standard, regardless of the current compilation's language. |
787 | bool isCXX98PODType(const ASTContext &Context) const; |
788 | |
789 | /// Return true if this is a POD type according to the more relaxed rules |
790 | /// of the C++11 standard, regardless of the current compilation's language. |
791 | /// (C++0x [basic.types]p9). Note that, unlike |
792 | /// CXXRecordDecl::isCXX11StandardLayout, this takes DRs into account. |
793 | bool isCXX11PODType(const ASTContext &Context) const; |
794 | |
795 | /// Return true if this is a trivial type per (C++0x [basic.types]p9) |
796 | bool isTrivialType(const ASTContext &Context) const; |
797 | |
798 | /// Return true if this is a trivially copyable type (C++0x [basic.types]p9) |
799 | bool isTriviallyCopyableType(const ASTContext &Context) const; |
800 | |
801 | |
802 | /// Returns true if it is a class and it might be dynamic. |
803 | bool mayBeDynamicClass() const; |
804 | |
805 | /// Returns true if it is not a class or if the class might not be dynamic. |
806 | bool mayBeNotDynamicClass() const; |
807 | |
808 | // Don't promise in the API that anything besides 'const' can be |
809 | // easily added. |
810 | |
811 | /// Add the `const` type qualifier to this QualType. |
812 | void addConst() { |
813 | addFastQualifiers(Qualifiers::Const); |
814 | } |
815 | QualType withConst() const { |
816 | return withFastQualifiers(Qualifiers::Const); |
817 | } |
818 | |
819 | /// Add the `volatile` type qualifier to this QualType. |
820 | void addVolatile() { |
821 | addFastQualifiers(Qualifiers::Volatile); |
822 | } |
823 | QualType withVolatile() const { |
824 | return withFastQualifiers(Qualifiers::Volatile); |
825 | } |
826 | |
827 | /// Add the `restrict` qualifier to this QualType. |
828 | void addRestrict() { |
829 | addFastQualifiers(Qualifiers::Restrict); |
830 | } |
831 | QualType withRestrict() const { |
832 | return withFastQualifiers(Qualifiers::Restrict); |
833 | } |
834 | |
835 | QualType withCVRQualifiers(unsigned CVR) const { |
836 | return withFastQualifiers(CVR); |
837 | } |
838 | |
839 | void addFastQualifiers(unsigned TQs) { |
840 | assert(!(TQs & ~Qualifiers::FastMask)((!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!" ) ? static_cast<void> (0) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 841, __PRETTY_FUNCTION__)) |
841 | && "non-fast qualifier bits set in mask!")((!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!" ) ? static_cast<void> (0) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 841, __PRETTY_FUNCTION__)); |
842 | Value.setInt(Value.getInt() | TQs); |
843 | } |
844 | |
845 | void removeLocalConst(); |
846 | void removeLocalVolatile(); |
847 | void removeLocalRestrict(); |
848 | void removeLocalCVRQualifiers(unsigned Mask); |
849 | |
850 | void removeLocalFastQualifiers() { Value.setInt(0); } |
851 | void removeLocalFastQualifiers(unsigned Mask) { |
852 | assert(!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers")((!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!(Mask & ~Qualifiers::FastMask) && \"mask has non-fast qualifiers\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 852, __PRETTY_FUNCTION__)); |
853 | Value.setInt(Value.getInt() & ~Mask); |
854 | } |
855 | |
856 | // Creates a type with the given qualifiers in addition to any |
857 | // qualifiers already on this type. |
858 | QualType withFastQualifiers(unsigned TQs) const { |
859 | QualType T = *this; |
860 | T.addFastQualifiers(TQs); |
861 | return T; |
862 | } |
863 | |
864 | // Creates a type with exactly the given fast qualifiers, removing |
865 | // any existing fast qualifiers. |
866 | QualType withExactLocalFastQualifiers(unsigned TQs) const { |
867 | return withoutLocalFastQualifiers().withFastQualifiers(TQs); |
868 | } |
869 | |
870 | // Removes fast qualifiers, but leaves any extended qualifiers in place. |
871 | QualType withoutLocalFastQualifiers() const { |
872 | QualType T = *this; |
873 | T.removeLocalFastQualifiers(); |
874 | return T; |
875 | } |
876 | |
877 | QualType getCanonicalType() const; |
878 | |
879 | /// Return this type with all of the instance-specific qualifiers |
880 | /// removed, but without removing any qualifiers that may have been applied |
881 | /// through typedefs. |
882 | QualType getLocalUnqualifiedType() const { return QualType(getTypePtr(), 0); } |
883 | |
884 | /// Retrieve the unqualified variant of the given type, |
885 | /// removing as little sugar as possible. |
886 | /// |
887 | /// This routine looks through various kinds of sugar to find the |
888 | /// least-desugared type that is unqualified. For example, given: |
889 | /// |
890 | /// \code |
891 | /// typedef int Integer; |
892 | /// typedef const Integer CInteger; |
893 | /// typedef CInteger DifferenceType; |
894 | /// \endcode |
895 | /// |
896 | /// Executing \c getUnqualifiedType() on the type \c DifferenceType will |
897 | /// desugar until we hit the type \c Integer, which has no qualifiers on it. |
898 | /// |
899 | /// The resulting type might still be qualified if it's sugar for an array |
900 | /// type. To strip qualifiers even from within a sugared array type, use |
901 | /// ASTContext::getUnqualifiedArrayType. |
902 | inline QualType getUnqualifiedType() const; |
903 | |
904 | /// Retrieve the unqualified variant of the given type, removing as little |
905 | /// sugar as possible. |
906 | /// |
907 | /// Like getUnqualifiedType(), but also returns the set of |
908 | /// qualifiers that were built up. |
909 | /// |
910 | /// The resulting type might still be qualified if it's sugar for an array |
911 | /// type. To strip qualifiers even from within a sugared array type, use |
912 | /// ASTContext::getUnqualifiedArrayType. |
913 | inline SplitQualType getSplitUnqualifiedType() const; |
914 | |
915 | /// Determine whether this type is more qualified than the other |
916 | /// given type, requiring exact equality for non-CVR qualifiers. |
917 | bool isMoreQualifiedThan(QualType Other) const; |
918 | |
919 | /// Determine whether this type is at least as qualified as the other |
920 | /// given type, requiring exact equality for non-CVR qualifiers. |
921 | bool isAtLeastAsQualifiedAs(QualType Other) const; |
922 | |
923 | QualType getNonReferenceType() const; |
924 | |
925 | /// Determine the type of a (typically non-lvalue) expression with the |
926 | /// specified result type. |
927 | /// |
928 | /// This routine should be used for expressions for which the return type is |
929 | /// explicitly specified (e.g., in a cast or call) and isn't necessarily |
930 | /// an lvalue. It removes a top-level reference (since there are no |
931 | /// expressions of reference type) and deletes top-level cvr-qualifiers |
932 | /// from non-class types (in C++) or all types (in C). |
933 | QualType getNonLValueExprType(const ASTContext &Context) const; |
934 | |
935 | /// Return the specified type with any "sugar" removed from |
936 | /// the type. This takes off typedefs, typeof's etc. If the outer level of |
937 | /// the type is already concrete, it returns it unmodified. This is similar |
938 | /// to getting the canonical type, but it doesn't remove *all* typedefs. For |
939 | /// example, it returns "T*" as "T*", (not as "int*"), because the pointer is |
940 | /// concrete. |
941 | /// |
942 | /// Qualifiers are left in place. |
943 | QualType getDesugaredType(const ASTContext &Context) const { |
944 | return getDesugaredType(*this, Context); |
945 | } |
946 | |
947 | SplitQualType getSplitDesugaredType() const { |
948 | return getSplitDesugaredType(*this); |
949 | } |
950 | |
951 | /// Return the specified type with one level of "sugar" removed from |
952 | /// the type. |
953 | /// |
954 | /// This routine takes off the first typedef, typeof, etc. If the outer level |
955 | /// of the type is already concrete, it returns it unmodified. |
956 | QualType getSingleStepDesugaredType(const ASTContext &Context) const { |
957 | return getSingleStepDesugaredTypeImpl(*this, Context); |
958 | } |
959 | |
960 | /// Returns the specified type after dropping any |
961 | /// outer-level parentheses. |
962 | QualType IgnoreParens() const { |
963 | if (isa<ParenType>(*this)) |
964 | return QualType::IgnoreParens(*this); |
965 | return *this; |
966 | } |
967 | |
968 | /// Indicate whether the specified types and qualifiers are identical. |
969 | friend bool operator==(const QualType &LHS, const QualType &RHS) { |
970 | return LHS.Value == RHS.Value; |
971 | } |
972 | friend bool operator!=(const QualType &LHS, const QualType &RHS) { |
973 | return LHS.Value != RHS.Value; |
974 | } |
975 | friend bool operator<(const QualType &LHS, const QualType &RHS) { |
976 | return LHS.Value < RHS.Value; |
977 | } |
978 | |
979 | static std::string getAsString(SplitQualType split, |
980 | const PrintingPolicy &Policy) { |
981 | return getAsString(split.Ty, split.Quals, Policy); |
982 | } |
983 | static std::string getAsString(const Type *ty, Qualifiers qs, |
984 | const PrintingPolicy &Policy); |
985 | |
986 | std::string getAsString() const; |
987 | std::string getAsString(const PrintingPolicy &Policy) const; |
988 | |
989 | void print(raw_ostream &OS, const PrintingPolicy &Policy, |
990 | const Twine &PlaceHolder = Twine(), |
991 | unsigned Indentation = 0) const; |
992 | |
993 | static void print(SplitQualType split, raw_ostream &OS, |
994 | const PrintingPolicy &policy, const Twine &PlaceHolder, |
995 | unsigned Indentation = 0) { |
996 | return print(split.Ty, split.Quals, OS, policy, PlaceHolder, Indentation); |
997 | } |
998 | |
999 | static void print(const Type *ty, Qualifiers qs, |
1000 | raw_ostream &OS, const PrintingPolicy &policy, |
1001 | const Twine &PlaceHolder, |
1002 | unsigned Indentation = 0); |
1003 | |
1004 | void getAsStringInternal(std::string &Str, |
1005 | const PrintingPolicy &Policy) const; |
1006 | |
1007 | static void getAsStringInternal(SplitQualType split, std::string &out, |
1008 | const PrintingPolicy &policy) { |
1009 | return getAsStringInternal(split.Ty, split.Quals, out, policy); |
1010 | } |
1011 | |
1012 | static void getAsStringInternal(const Type *ty, Qualifiers qs, |
1013 | std::string &out, |
1014 | const PrintingPolicy &policy); |
1015 | |
1016 | class StreamedQualTypeHelper { |
1017 | const QualType &T; |
1018 | const PrintingPolicy &Policy; |
1019 | const Twine &PlaceHolder; |
1020 | unsigned Indentation; |
1021 | |
1022 | public: |
1023 | StreamedQualTypeHelper(const QualType &T, const PrintingPolicy &Policy, |
1024 | const Twine &PlaceHolder, unsigned Indentation) |
1025 | : T(T), Policy(Policy), PlaceHolder(PlaceHolder), |
1026 | Indentation(Indentation) {} |
1027 | |
1028 | friend raw_ostream &operator<<(raw_ostream &OS, |
1029 | const StreamedQualTypeHelper &SQT) { |
1030 | SQT.T.print(OS, SQT.Policy, SQT.PlaceHolder, SQT.Indentation); |
1031 | return OS; |
1032 | } |
1033 | }; |
1034 | |
1035 | StreamedQualTypeHelper stream(const PrintingPolicy &Policy, |
1036 | const Twine &PlaceHolder = Twine(), |
1037 | unsigned Indentation = 0) const { |
1038 | return StreamedQualTypeHelper(*this, Policy, PlaceHolder, Indentation); |
1039 | } |
1040 | |
1041 | void dump(const char *s) const; |
1042 | void dump() const; |
1043 | void dump(llvm::raw_ostream &OS) const; |
1044 | |
1045 | void Profile(llvm::FoldingSetNodeID &ID) const { |
1046 | ID.AddPointer(getAsOpaquePtr()); |
1047 | } |
1048 | |
1049 | /// Return the address space of this type. |
1050 | inline LangAS getAddressSpace() const; |
1051 | |
1052 | /// Returns gc attribute of this type. |
1053 | inline Qualifiers::GC getObjCGCAttr() const; |
1054 | |
1055 | /// true when Type is objc's weak. |
1056 | bool isObjCGCWeak() const { |
1057 | return getObjCGCAttr() == Qualifiers::Weak; |
1058 | } |
1059 | |
1060 | /// true when Type is objc's strong. |
1061 | bool isObjCGCStrong() const { |
1062 | return getObjCGCAttr() == Qualifiers::Strong; |
1063 | } |
1064 | |
1065 | /// Returns lifetime attribute of this type. |
1066 | Qualifiers::ObjCLifetime getObjCLifetime() const { |
1067 | return getQualifiers().getObjCLifetime(); |
1068 | } |
1069 | |
1070 | bool hasNonTrivialObjCLifetime() const { |
1071 | return getQualifiers().hasNonTrivialObjCLifetime(); |
1072 | } |
1073 | |
1074 | bool hasStrongOrWeakObjCLifetime() const { |
1075 | return getQualifiers().hasStrongOrWeakObjCLifetime(); |
1076 | } |
1077 | |
1078 | // true when Type is objc's weak and weak is enabled but ARC isn't. |
1079 | bool isNonWeakInMRRWithObjCWeak(const ASTContext &Context) const; |
1080 | |
1081 | enum PrimitiveDefaultInitializeKind { |
1082 | /// The type does not fall into any of the following categories. Note that |
1083 | /// this case is zero-valued so that values of this enum can be used as a |
1084 | /// boolean condition for non-triviality. |
1085 | PDIK_Trivial, |
1086 | |
1087 | /// The type is an Objective-C retainable pointer type that is qualified |
1088 | /// with the ARC __strong qualifier. |
1089 | PDIK_ARCStrong, |
1090 | |
1091 | /// The type is an Objective-C retainable pointer type that is qualified |
1092 | /// with the ARC __weak qualifier. |
1093 | PDIK_ARCWeak, |
1094 | |
1095 | /// The type is a struct containing a field whose type is not PCK_Trivial. |
1096 | PDIK_Struct |
1097 | }; |
1098 | |
1099 | /// Functions to query basic properties of non-trivial C struct types. |
1100 | |
1101 | /// Check if this is a non-trivial type that would cause a C struct |
1102 | /// transitively containing this type to be non-trivial to default initialize |
1103 | /// and return the kind. |
1104 | PrimitiveDefaultInitializeKind |
1105 | isNonTrivialToPrimitiveDefaultInitialize() const; |
1106 | |
1107 | enum PrimitiveCopyKind { |
1108 | /// The type does not fall into any of the following categories. Note that |
1109 | /// this case is zero-valued so that values of this enum can be used as a |
1110 | /// boolean condition for non-triviality. |
1111 | PCK_Trivial, |
1112 | |
1113 | /// The type would be trivial except that it is volatile-qualified. Types |
1114 | /// that fall into one of the other non-trivial cases may additionally be |
1115 | /// volatile-qualified. |
1116 | PCK_VolatileTrivial, |
1117 | |
1118 | /// The type is an Objective-C retainable pointer type that is qualified |
1119 | /// with the ARC __strong qualifier. |
1120 | PCK_ARCStrong, |
1121 | |
1122 | /// The type is an Objective-C retainable pointer type that is qualified |
1123 | /// with the ARC __weak qualifier. |
1124 | PCK_ARCWeak, |
1125 | |
1126 | /// The type is a struct containing a field whose type is neither |
1127 | /// PCK_Trivial nor PCK_VolatileTrivial. |
1128 | /// Note that a C++ struct type does not necessarily match this; C++ copying |
1129 | /// semantics are too complex to express here, in part because they depend |
1130 | /// on the exact constructor or assignment operator that is chosen by |
1131 | /// overload resolution to do the copy. |
1132 | PCK_Struct |
1133 | }; |
1134 | |
1135 | /// Check if this is a non-trivial type that would cause a C struct |
1136 | /// transitively containing this type to be non-trivial to copy and return the |
1137 | /// kind. |
1138 | PrimitiveCopyKind isNonTrivialToPrimitiveCopy() const; |
1139 | |
1140 | /// Check if this is a non-trivial type that would cause a C struct |
1141 | /// transitively containing this type to be non-trivial to destructively |
1142 | /// move and return the kind. Destructive move in this context is a C++-style |
1143 | /// move in which the source object is placed in a valid but unspecified state |
1144 | /// after it is moved, as opposed to a truly destructive move in which the |
1145 | /// source object is placed in an uninitialized state. |
1146 | PrimitiveCopyKind isNonTrivialToPrimitiveDestructiveMove() const; |
1147 | |
1148 | enum DestructionKind { |
1149 | DK_none, |
1150 | DK_cxx_destructor, |
1151 | DK_objc_strong_lifetime, |
1152 | DK_objc_weak_lifetime, |
1153 | DK_nontrivial_c_struct |
1154 | }; |
1155 | |
1156 | /// Returns a nonzero value if objects of this type require |
1157 | /// non-trivial work to clean up after. Non-zero because it's |
1158 | /// conceivable that qualifiers (objc_gc(weak)?) could make |
1159 | /// something require destruction. |
1160 | DestructionKind isDestructedType() const { |
1161 | return isDestructedTypeImpl(*this); |
1162 | } |
1163 | |
1164 | /// Check if this is or contains a C union that is non-trivial to |
1165 | /// default-initialize, which is a union that has a member that is non-trivial |
1166 | /// to default-initialize. If this returns true, |
1167 | /// isNonTrivialToPrimitiveDefaultInitialize returns PDIK_Struct. |
1168 | bool hasNonTrivialToPrimitiveDefaultInitializeCUnion() const; |
1169 | |
1170 | /// Check if this is or contains a C union that is non-trivial to destruct, |
1171 | /// which is a union that has a member that is non-trivial to destruct. If |
1172 | /// this returns true, isDestructedType returns DK_nontrivial_c_struct. |
1173 | bool hasNonTrivialToPrimitiveDestructCUnion() const; |
1174 | |
1175 | /// Check if this is or contains a C union that is non-trivial to copy, which |
1176 | /// is a union that has a member that is non-trivial to copy. If this returns |
1177 | /// true, isNonTrivialToPrimitiveCopy returns PCK_Struct. |
1178 | bool hasNonTrivialToPrimitiveCopyCUnion() const; |
1179 | |
1180 | /// Determine whether expressions of the given type are forbidden |
1181 | /// from being lvalues in C. |
1182 | /// |
1183 | /// The expression types that are forbidden to be lvalues are: |
1184 | /// - 'void', but not qualified void |
1185 | /// - function types |
1186 | /// |
1187 | /// The exact rule here is C99 6.3.2.1: |
1188 | /// An lvalue is an expression with an object type or an incomplete |
1189 | /// type other than void. |
1190 | bool isCForbiddenLValueType() const; |
1191 | |
1192 | /// Substitute type arguments for the Objective-C type parameters used in the |
1193 | /// subject type. |
1194 | /// |
1195 | /// \param ctx ASTContext in which the type exists. |
1196 | /// |
1197 | /// \param typeArgs The type arguments that will be substituted for the |
1198 | /// Objective-C type parameters in the subject type, which are generally |
1199 | /// computed via \c Type::getObjCSubstitutions. If empty, the type |
1200 | /// parameters will be replaced with their bounds or id/Class, as appropriate |
1201 | /// for the context. |
1202 | /// |
1203 | /// \param context The context in which the subject type was written. |
1204 | /// |
1205 | /// \returns the resulting type. |
1206 | QualType substObjCTypeArgs(ASTContext &ctx, |
1207 | ArrayRef<QualType> typeArgs, |
1208 | ObjCSubstitutionContext context) const; |
1209 | |
1210 | /// Substitute type arguments from an object type for the Objective-C type |
1211 | /// parameters used in the subject type. |
1212 | /// |
1213 | /// This operation combines the computation of type arguments for |
1214 | /// substitution (\c Type::getObjCSubstitutions) with the actual process of |
1215 | /// substitution (\c QualType::substObjCTypeArgs) for the convenience of |
1216 | /// callers that need to perform a single substitution in isolation. |
1217 | /// |
1218 | /// \param objectType The type of the object whose member type we're |
1219 | /// substituting into. For example, this might be the receiver of a message |
1220 | /// or the base of a property access. |
1221 | /// |
1222 | /// \param dc The declaration context from which the subject type was |
1223 | /// retrieved, which indicates (for example) which type parameters should |
1224 | /// be substituted. |
1225 | /// |
1226 | /// \param context The context in which the subject type was written. |
1227 | /// |
1228 | /// \returns the subject type after replacing all of the Objective-C type |
1229 | /// parameters with their corresponding arguments. |
1230 | QualType substObjCMemberType(QualType objectType, |
1231 | const DeclContext *dc, |
1232 | ObjCSubstitutionContext context) const; |
1233 | |
1234 | /// Strip Objective-C "__kindof" types from the given type. |
1235 | QualType stripObjCKindOfType(const ASTContext &ctx) const; |
1236 | |
1237 | /// Remove all qualifiers including _Atomic. |
1238 | QualType getAtomicUnqualifiedType() const; |
1239 | |
1240 | private: |
1241 | // These methods are implemented in a separate translation unit; |
1242 | // "static"-ize them to avoid creating temporary QualTypes in the |
1243 | // caller. |
1244 | static bool isConstant(QualType T, const ASTContext& Ctx); |
1245 | static QualType getDesugaredType(QualType T, const ASTContext &Context); |
1246 | static SplitQualType getSplitDesugaredType(QualType T); |
1247 | static SplitQualType getSplitUnqualifiedTypeImpl(QualType type); |
1248 | static QualType getSingleStepDesugaredTypeImpl(QualType type, |
1249 | const ASTContext &C); |
1250 | static QualType IgnoreParens(QualType T); |
1251 | static DestructionKind isDestructedTypeImpl(QualType type); |
1252 | |
1253 | /// Check if \param RD is or contains a non-trivial C union. |
1254 | static bool hasNonTrivialToPrimitiveDefaultInitializeCUnion(const RecordDecl *RD); |
1255 | static bool hasNonTrivialToPrimitiveDestructCUnion(const RecordDecl *RD); |
1256 | static bool hasNonTrivialToPrimitiveCopyCUnion(const RecordDecl *RD); |
1257 | }; |
1258 | |
1259 | } // namespace clang |
1260 | |
1261 | namespace llvm { |
1262 | |
1263 | /// Implement simplify_type for QualType, so that we can dyn_cast from QualType |
1264 | /// to a specific Type class. |
1265 | template<> struct simplify_type< ::clang::QualType> { |
1266 | using SimpleType = const ::clang::Type *; |
1267 | |
1268 | static SimpleType getSimplifiedValue(::clang::QualType Val) { |
1269 | return Val.getTypePtr(); |
1270 | } |
1271 | }; |
1272 | |
1273 | // Teach SmallPtrSet that QualType is "basically a pointer". |
1274 | template<> |
1275 | struct PointerLikeTypeTraits<clang::QualType> { |
1276 | static inline void *getAsVoidPointer(clang::QualType P) { |
1277 | return P.getAsOpaquePtr(); |
1278 | } |
1279 | |
1280 | static inline clang::QualType getFromVoidPointer(void *P) { |
1281 | return clang::QualType::getFromOpaquePtr(P); |
1282 | } |
1283 | |
1284 | // Various qualifiers go in low bits. |
1285 | enum { NumLowBitsAvailable = 0 }; |
1286 | }; |
1287 | |
1288 | } // namespace llvm |
1289 | |
1290 | namespace clang { |
1291 | |
1292 | /// Base class that is common to both the \c ExtQuals and \c Type |
1293 | /// classes, which allows \c QualType to access the common fields between the |
1294 | /// two. |
1295 | class ExtQualsTypeCommonBase { |
1296 | friend class ExtQuals; |
1297 | friend class QualType; |
1298 | friend class Type; |
1299 | |
1300 | /// The "base" type of an extended qualifiers type (\c ExtQuals) or |
1301 | /// a self-referential pointer (for \c Type). |
1302 | /// |
1303 | /// This pointer allows an efficient mapping from a QualType to its |
1304 | /// underlying type pointer. |
1305 | const Type *const BaseType; |
1306 | |
1307 | /// The canonical type of this type. A QualType. |
1308 | QualType CanonicalType; |
1309 | |
1310 | ExtQualsTypeCommonBase(const Type *baseType, QualType canon) |
1311 | : BaseType(baseType), CanonicalType(canon) {} |
1312 | }; |
1313 | |
1314 | /// We can encode up to four bits in the low bits of a |
1315 | /// type pointer, but there are many more type qualifiers that we want |
1316 | /// to be able to apply to an arbitrary type. Therefore we have this |
1317 | /// struct, intended to be heap-allocated and used by QualType to |
1318 | /// store qualifiers. |
1319 | /// |
1320 | /// The current design tags the 'const', 'restrict', and 'volatile' qualifiers |
1321 | /// in three low bits on the QualType pointer; a fourth bit records whether |
1322 | /// the pointer is an ExtQuals node. The extended qualifiers (address spaces, |
1323 | /// Objective-C GC attributes) are much more rare. |
1324 | class ExtQuals : public ExtQualsTypeCommonBase, public llvm::FoldingSetNode { |
1325 | // NOTE: changing the fast qualifiers should be straightforward as |
1326 | // long as you don't make 'const' non-fast. |
1327 | // 1. Qualifiers: |
1328 | // a) Modify the bitmasks (Qualifiers::TQ and DeclSpec::TQ). |
1329 | // Fast qualifiers must occupy the low-order bits. |
1330 | // b) Update Qualifiers::FastWidth and FastMask. |
1331 | // 2. QualType: |
1332 | // a) Update is{Volatile,Restrict}Qualified(), defined inline. |
1333 | // b) Update remove{Volatile,Restrict}, defined near the end of |
1334 | // this header. |
1335 | // 3. ASTContext: |
1336 | // a) Update get{Volatile,Restrict}Type. |
1337 | |
1338 | /// The immutable set of qualifiers applied by this node. Always contains |
1339 | /// extended qualifiers. |
1340 | Qualifiers Quals; |
1341 | |
1342 | ExtQuals *this_() { return this; } |
1343 | |
1344 | public: |
1345 | ExtQuals(const Type *baseType, QualType canon, Qualifiers quals) |
1346 | : ExtQualsTypeCommonBase(baseType, |
1347 | canon.isNull() ? QualType(this_(), 0) : canon), |
1348 | Quals(quals) { |
1349 | assert(Quals.hasNonFastQualifiers()((Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 1350, __PRETTY_FUNCTION__)) |
1350 | && "ExtQuals created with no fast qualifiers")((Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 1350, __PRETTY_FUNCTION__)); |
1351 | assert(!Quals.hasFastQualifiers()((!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 1352, __PRETTY_FUNCTION__)) |
1352 | && "ExtQuals created with fast qualifiers")((!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 1352, __PRETTY_FUNCTION__)); |
1353 | } |
1354 | |
1355 | Qualifiers getQualifiers() const { return Quals; } |
1356 | |
1357 | bool hasObjCGCAttr() const { return Quals.hasObjCGCAttr(); } |
1358 | Qualifiers::GC getObjCGCAttr() const { return Quals.getObjCGCAttr(); } |
1359 | |
1360 | bool hasObjCLifetime() const { return Quals.hasObjCLifetime(); } |
1361 | Qualifiers::ObjCLifetime getObjCLifetime() const { |
1362 | return Quals.getObjCLifetime(); |
1363 | } |
1364 | |
1365 | bool hasAddressSpace() const { return Quals.hasAddressSpace(); } |
1366 | LangAS getAddressSpace() const { return Quals.getAddressSpace(); } |
1367 | |
1368 | const Type *getBaseType() const { return BaseType; } |
1369 | |
1370 | public: |
1371 | void Profile(llvm::FoldingSetNodeID &ID) const { |
1372 | Profile(ID, getBaseType(), Quals); |
1373 | } |
1374 | |
1375 | static void Profile(llvm::FoldingSetNodeID &ID, |
1376 | const Type *BaseType, |
1377 | Qualifiers Quals) { |
1378 | assert(!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!")((!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!" ) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"fast qualifiers in ExtQuals hash!\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 1378, __PRETTY_FUNCTION__)); |
1379 | ID.AddPointer(BaseType); |
1380 | Quals.Profile(ID); |
1381 | } |
1382 | }; |
1383 | |
1384 | /// The kind of C++11 ref-qualifier associated with a function type. |
1385 | /// This determines whether a member function's "this" object can be an |
1386 | /// lvalue, rvalue, or neither. |
1387 | enum RefQualifierKind { |
1388 | /// No ref-qualifier was provided. |
1389 | RQ_None = 0, |
1390 | |
1391 | /// An lvalue ref-qualifier was provided (\c &). |
1392 | RQ_LValue, |
1393 | |
1394 | /// An rvalue ref-qualifier was provided (\c &&). |
1395 | RQ_RValue |
1396 | }; |
1397 | |
1398 | /// Which keyword(s) were used to create an AutoType. |
1399 | enum class AutoTypeKeyword { |
1400 | /// auto |
1401 | Auto, |
1402 | |
1403 | /// decltype(auto) |
1404 | DecltypeAuto, |
1405 | |
1406 | /// __auto_type (GNU extension) |
1407 | GNUAutoType |
1408 | }; |
1409 | |
1410 | /// The base class of the type hierarchy. |
1411 | /// |
1412 | /// A central concept with types is that each type always has a canonical |
1413 | /// type. A canonical type is the type with any typedef names stripped out |
1414 | /// of it or the types it references. For example, consider: |
1415 | /// |
1416 | /// typedef int foo; |
1417 | /// typedef foo* bar; |
1418 | /// 'int *' 'foo *' 'bar' |
1419 | /// |
1420 | /// There will be a Type object created for 'int'. Since int is canonical, its |
1421 | /// CanonicalType pointer points to itself. There is also a Type for 'foo' (a |
1422 | /// TypedefType). Its CanonicalType pointer points to the 'int' Type. Next |
1423 | /// there is a PointerType that represents 'int*', which, like 'int', is |
1424 | /// canonical. Finally, there is a PointerType type for 'foo*' whose canonical |
1425 | /// type is 'int*', and there is a TypedefType for 'bar', whose canonical type |
1426 | /// is also 'int*'. |
1427 | /// |
1428 | /// Non-canonical types are useful for emitting diagnostics, without losing |
1429 | /// information about typedefs being used. Canonical types are useful for type |
1430 | /// comparisons (they allow by-pointer equality tests) and useful for reasoning |
1431 | /// about whether something has a particular form (e.g. is a function type), |
1432 | /// because they implicitly, recursively, strip all typedefs out of a type. |
1433 | /// |
1434 | /// Types, once created, are immutable. |
1435 | /// |
1436 | class alignas(8) Type : public ExtQualsTypeCommonBase { |
1437 | public: |
1438 | enum TypeClass { |
1439 | #define TYPE(Class, Base) Class, |
1440 | #define LAST_TYPE(Class) TypeLast = Class |
1441 | #define ABSTRACT_TYPE(Class, Base) |
1442 | #include "clang/AST/TypeNodes.inc" |
1443 | }; |
1444 | |
1445 | private: |
1446 | /// Bitfields required by the Type class. |
1447 | class TypeBitfields { |
1448 | friend class Type; |
1449 | template <class T> friend class TypePropertyCache; |
1450 | |
1451 | /// TypeClass bitfield - Enum that specifies what subclass this belongs to. |
1452 | unsigned TC : 8; |
1453 | |
1454 | /// Whether this type is a dependent type (C++ [temp.dep.type]). |
1455 | unsigned Dependent : 1; |
1456 | |
1457 | /// Whether this type somehow involves a template parameter, even |
1458 | /// if the resolution of the type does not depend on a template parameter. |
1459 | unsigned InstantiationDependent : 1; |
1460 | |
1461 | /// Whether this type is a variably-modified type (C99 6.7.5). |
1462 | unsigned VariablyModified : 1; |
1463 | |
1464 | /// Whether this type contains an unexpanded parameter pack |
1465 | /// (for C++11 variadic templates). |
1466 | unsigned ContainsUnexpandedParameterPack : 1; |
1467 | |
1468 | /// True if the cache (i.e. the bitfields here starting with |
1469 | /// 'Cache') is valid. |
1470 | mutable unsigned CacheValid : 1; |
1471 | |
1472 | /// Linkage of this type. |
1473 | mutable unsigned CachedLinkage : 3; |
1474 | |
1475 | /// Whether this type involves and local or unnamed types. |
1476 | mutable unsigned CachedLocalOrUnnamed : 1; |
1477 | |
1478 | /// Whether this type comes from an AST file. |
1479 | mutable unsigned FromAST : 1; |
1480 | |
1481 | bool isCacheValid() const { |
1482 | return CacheValid; |
1483 | } |
1484 | |
1485 | Linkage getLinkage() const { |
1486 | assert(isCacheValid() && "getting linkage from invalid cache")((isCacheValid() && "getting linkage from invalid cache" ) ? static_cast<void> (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 1486, __PRETTY_FUNCTION__)); |
1487 | return static_cast<Linkage>(CachedLinkage); |
1488 | } |
1489 | |
1490 | bool hasLocalOrUnnamedType() const { |
1491 | assert(isCacheValid() && "getting linkage from invalid cache")((isCacheValid() && "getting linkage from invalid cache" ) ? static_cast<void> (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 1491, __PRETTY_FUNCTION__)); |
1492 | return CachedLocalOrUnnamed; |
1493 | } |
1494 | }; |
1495 | enum { NumTypeBits = 18 }; |
1496 | |
1497 | protected: |
1498 | // These classes allow subclasses to somewhat cleanly pack bitfields |
1499 | // into Type. |
1500 | |
1501 | class ArrayTypeBitfields { |
1502 | friend class ArrayType; |
1503 | |
1504 | unsigned : NumTypeBits; |
1505 | |
1506 | /// CVR qualifiers from declarations like |
1507 | /// 'int X[static restrict 4]'. For function parameters only. |
1508 | unsigned IndexTypeQuals : 3; |
1509 | |
1510 | /// Storage class qualifiers from declarations like |
1511 | /// 'int X[static restrict 4]'. For function parameters only. |
1512 | /// Actually an ArrayType::ArraySizeModifier. |
1513 | unsigned SizeModifier : 3; |
1514 | }; |
1515 | |
1516 | class BuiltinTypeBitfields { |
1517 | friend class BuiltinType; |
1518 | |
1519 | unsigned : NumTypeBits; |
1520 | |
1521 | /// The kind (BuiltinType::Kind) of builtin type this is. |
1522 | unsigned Kind : 8; |
1523 | }; |
1524 | |
1525 | /// FunctionTypeBitfields store various bits belonging to FunctionProtoType. |
1526 | /// Only common bits are stored here. Additional uncommon bits are stored |
1527 | /// in a trailing object after FunctionProtoType. |
1528 | class FunctionTypeBitfields { |
1529 | friend class FunctionProtoType; |
1530 | friend class FunctionType; |
1531 | |
1532 | unsigned : NumTypeBits; |
1533 | |
1534 | /// Extra information which affects how the function is called, like |
1535 | /// regparm and the calling convention. |
1536 | unsigned ExtInfo : 12; |
1537 | |
1538 | /// The ref-qualifier associated with a \c FunctionProtoType. |
1539 | /// |
1540 | /// This is a value of type \c RefQualifierKind. |
1541 | unsigned RefQualifier : 2; |
1542 | |
1543 | /// Used only by FunctionProtoType, put here to pack with the |
1544 | /// other bitfields. |
1545 | /// The qualifiers are part of FunctionProtoType because... |
1546 | /// |
1547 | /// C++ 8.3.5p4: The return type, the parameter type list and the |
1548 | /// cv-qualifier-seq, [...], are part of the function type. |
1549 | unsigned FastTypeQuals : Qualifiers::FastWidth; |
1550 | /// Whether this function has extended Qualifiers. |
1551 | unsigned HasExtQuals : 1; |
1552 | |
1553 | /// The number of parameters this function has, not counting '...'. |
1554 | /// According to [implimits] 8 bits should be enough here but this is |
1555 | /// somewhat easy to exceed with metaprogramming and so we would like to |
1556 | /// keep NumParams as wide as reasonably possible. |
1557 | unsigned NumParams : 16; |
1558 | |
1559 | /// The type of exception specification this function has. |
1560 | unsigned ExceptionSpecType : 4; |
1561 | |
1562 | /// Whether this function has extended parameter information. |
1563 | unsigned HasExtParameterInfos : 1; |
1564 | |
1565 | /// Whether the function is variadic. |
1566 | unsigned Variadic : 1; |
1567 | |
1568 | /// Whether this function has a trailing return type. |
1569 | unsigned HasTrailingReturn : 1; |
1570 | }; |
1571 | |
1572 | class ObjCObjectTypeBitfields { |
1573 | friend class ObjCObjectType; |
1574 | |
1575 | unsigned : NumTypeBits; |
1576 | |
1577 | /// The number of type arguments stored directly on this object type. |
1578 | unsigned NumTypeArgs : 7; |
1579 | |
1580 | /// The number of protocols stored directly on this object type. |
1581 | unsigned NumProtocols : 6; |
1582 | |
1583 | /// Whether this is a "kindof" type. |
1584 | unsigned IsKindOf : 1; |
1585 | }; |
1586 | |
1587 | class ReferenceTypeBitfields { |
1588 | friend class ReferenceType; |
1589 | |
1590 | unsigned : NumTypeBits; |
1591 | |
1592 | /// True if the type was originally spelled with an lvalue sigil. |
1593 | /// This is never true of rvalue references but can also be false |
1594 | /// on lvalue references because of C++0x [dcl.typedef]p9, |
1595 | /// as follows: |
1596 | /// |
1597 | /// typedef int &ref; // lvalue, spelled lvalue |
1598 | /// typedef int &&rvref; // rvalue |
1599 | /// ref &a; // lvalue, inner ref, spelled lvalue |
1600 | /// ref &&a; // lvalue, inner ref |
1601 | /// rvref &a; // lvalue, inner ref, spelled lvalue |
1602 | /// rvref &&a; // rvalue, inner ref |
1603 | unsigned SpelledAsLValue : 1; |
1604 | |
1605 | /// True if the inner type is a reference type. This only happens |
1606 | /// in non-canonical forms. |
1607 | unsigned InnerRef : 1; |
1608 | }; |
1609 | |
1610 | class TypeWithKeywordBitfields { |
1611 | friend class TypeWithKeyword; |
1612 | |
1613 | unsigned : NumTypeBits; |
1614 | |
1615 | /// An ElaboratedTypeKeyword. 8 bits for efficient access. |
1616 | unsigned Keyword : 8; |
1617 | }; |
1618 | |
1619 | enum { NumTypeWithKeywordBits = 8 }; |
1620 | |
1621 | class ElaboratedTypeBitfields { |
1622 | friend class ElaboratedType; |
1623 | |
1624 | unsigned : NumTypeBits; |
1625 | unsigned : NumTypeWithKeywordBits; |
1626 | |
1627 | /// Whether the ElaboratedType has a trailing OwnedTagDecl. |
1628 | unsigned HasOwnedTagDecl : 1; |
1629 | }; |
1630 | |
1631 | class VectorTypeBitfields { |
1632 | friend class VectorType; |
1633 | friend class DependentVectorType; |
1634 | |
1635 | unsigned : NumTypeBits; |
1636 | |
1637 | /// The kind of vector, either a generic vector type or some |
1638 | /// target-specific vector type such as for AltiVec or Neon. |
1639 | unsigned VecKind : 3; |
1640 | |
1641 | /// The number of elements in the vector. |
1642 | unsigned NumElements : 29 - NumTypeBits; |
1643 | |
1644 | enum { MaxNumElements = (1 << (29 - NumTypeBits)) - 1 }; |
1645 | }; |
1646 | |
1647 | class AttributedTypeBitfields { |
1648 | friend class AttributedType; |
1649 | |
1650 | unsigned : NumTypeBits; |
1651 | |
1652 | /// An AttributedType::Kind |
1653 | unsigned AttrKind : 32 - NumTypeBits; |
1654 | }; |
1655 | |
1656 | class AutoTypeBitfields { |
1657 | friend class AutoType; |
1658 | |
1659 | unsigned : NumTypeBits; |
1660 | |
1661 | /// Was this placeholder type spelled as 'auto', 'decltype(auto)', |
1662 | /// or '__auto_type'? AutoTypeKeyword value. |
1663 | unsigned Keyword : 2; |
1664 | }; |
1665 | |
1666 | class SubstTemplateTypeParmPackTypeBitfields { |
1667 | friend class SubstTemplateTypeParmPackType; |
1668 | |
1669 | unsigned : NumTypeBits; |
1670 | |
1671 | /// The number of template arguments in \c Arguments, which is |
1672 | /// expected to be able to hold at least 1024 according to [implimits]. |
1673 | /// However as this limit is somewhat easy to hit with template |
1674 | /// metaprogramming we'd prefer to keep it as large as possible. |
1675 | /// At the moment it has been left as a non-bitfield since this type |
1676 | /// safely fits in 64 bits as an unsigned, so there is no reason to |
1677 | /// introduce the performance impact of a bitfield. |
1678 | unsigned NumArgs; |
1679 | }; |
1680 | |
1681 | class TemplateSpecializationTypeBitfields { |
1682 | friend class TemplateSpecializationType; |
1683 | |
1684 | unsigned : NumTypeBits; |
1685 | |
1686 | /// Whether this template specialization type is a substituted type alias. |
1687 | unsigned TypeAlias : 1; |
1688 | |
1689 | /// The number of template arguments named in this class template |
1690 | /// specialization, which is expected to be able to hold at least 1024 |
1691 | /// according to [implimits]. However, as this limit is somewhat easy to |
1692 | /// hit with template metaprogramming we'd prefer to keep it as large |
1693 | /// as possible. At the moment it has been left as a non-bitfield since |
1694 | /// this type safely fits in 64 bits as an unsigned, so there is no reason |
1695 | /// to introduce the performance impact of a bitfield. |
1696 | unsigned NumArgs; |
1697 | }; |
1698 | |
1699 | class DependentTemplateSpecializationTypeBitfields { |
1700 | friend class DependentTemplateSpecializationType; |
1701 | |
1702 | unsigned : NumTypeBits; |
1703 | unsigned : NumTypeWithKeywordBits; |
1704 | |
1705 | /// The number of template arguments named in this class template |
1706 | /// specialization, which is expected to be able to hold at least 1024 |
1707 | /// according to [implimits]. However, as this limit is somewhat easy to |
1708 | /// hit with template metaprogramming we'd prefer to keep it as large |
1709 | /// as possible. At the moment it has been left as a non-bitfield since |
1710 | /// this type safely fits in 64 bits as an unsigned, so there is no reason |
1711 | /// to introduce the performance impact of a bitfield. |
1712 | unsigned NumArgs; |
1713 | }; |
1714 | |
1715 | class PackExpansionTypeBitfields { |
1716 | friend class PackExpansionType; |
1717 | |
1718 | unsigned : NumTypeBits; |
1719 | |
1720 | /// The number of expansions that this pack expansion will |
1721 | /// generate when substituted (+1), which is expected to be able to |
1722 | /// hold at least 1024 according to [implimits]. However, as this limit |
1723 | /// is somewhat easy to hit with template metaprogramming we'd prefer to |
1724 | /// keep it as large as possible. At the moment it has been left as a |
1725 | /// non-bitfield since this type safely fits in 64 bits as an unsigned, so |
1726 | /// there is no reason to introduce the performance impact of a bitfield. |
1727 | /// |
1728 | /// This field will only have a non-zero value when some of the parameter |
1729 | /// packs that occur within the pattern have been substituted but others |
1730 | /// have not. |
1731 | unsigned NumExpansions; |
1732 | }; |
1733 | |
1734 | union { |
1735 | TypeBitfields TypeBits; |
1736 | ArrayTypeBitfields ArrayTypeBits; |
1737 | AttributedTypeBitfields AttributedTypeBits; |
1738 | AutoTypeBitfields AutoTypeBits; |
1739 | BuiltinTypeBitfields BuiltinTypeBits; |
1740 | FunctionTypeBitfields FunctionTypeBits; |
1741 | ObjCObjectTypeBitfields ObjCObjectTypeBits; |
1742 | ReferenceTypeBitfields ReferenceTypeBits; |
1743 | TypeWithKeywordBitfields TypeWithKeywordBits; |
1744 | ElaboratedTypeBitfields ElaboratedTypeBits; |
1745 | VectorTypeBitfields VectorTypeBits; |
1746 | SubstTemplateTypeParmPackTypeBitfields SubstTemplateTypeParmPackTypeBits; |
1747 | TemplateSpecializationTypeBitfields TemplateSpecializationTypeBits; |
1748 | DependentTemplateSpecializationTypeBitfields |
1749 | DependentTemplateSpecializationTypeBits; |
1750 | PackExpansionTypeBitfields PackExpansionTypeBits; |
1751 | |
1752 | static_assert(sizeof(TypeBitfields) <= 8, |
1753 | "TypeBitfields is larger than 8 bytes!"); |
1754 | static_assert(sizeof(ArrayTypeBitfields) <= 8, |
1755 | "ArrayTypeBitfields is larger than 8 bytes!"); |
1756 | static_assert(sizeof(AttributedTypeBitfields) <= 8, |
1757 | "AttributedTypeBitfields is larger than 8 bytes!"); |
1758 | static_assert(sizeof(AutoTypeBitfields) <= 8, |
1759 | "AutoTypeBitfields is larger than 8 bytes!"); |
1760 | static_assert(sizeof(BuiltinTypeBitfields) <= 8, |
1761 | "BuiltinTypeBitfields is larger than 8 bytes!"); |
1762 | static_assert(sizeof(FunctionTypeBitfields) <= 8, |
1763 | "FunctionTypeBitfields is larger than 8 bytes!"); |
1764 | static_assert(sizeof(ObjCObjectTypeBitfields) <= 8, |
1765 | "ObjCObjectTypeBitfields is larger than 8 bytes!"); |
1766 | static_assert(sizeof(ReferenceTypeBitfields) <= 8, |
1767 | "ReferenceTypeBitfields is larger than 8 bytes!"); |
1768 | static_assert(sizeof(TypeWithKeywordBitfields) <= 8, |
1769 | "TypeWithKeywordBitfields is larger than 8 bytes!"); |
1770 | static_assert(sizeof(ElaboratedTypeBitfields) <= 8, |
1771 | "ElaboratedTypeBitfields is larger than 8 bytes!"); |
1772 | static_assert(sizeof(VectorTypeBitfields) <= 8, |
1773 | "VectorTypeBitfields is larger than 8 bytes!"); |
1774 | static_assert(sizeof(SubstTemplateTypeParmPackTypeBitfields) <= 8, |
1775 | "SubstTemplateTypeParmPackTypeBitfields is larger" |
1776 | " than 8 bytes!"); |
1777 | static_assert(sizeof(TemplateSpecializationTypeBitfields) <= 8, |
1778 | "TemplateSpecializationTypeBitfields is larger" |
1779 | " than 8 bytes!"); |
1780 | static_assert(sizeof(DependentTemplateSpecializationTypeBitfields) <= 8, |
1781 | "DependentTemplateSpecializationTypeBitfields is larger" |
1782 | " than 8 bytes!"); |
1783 | static_assert(sizeof(PackExpansionTypeBitfields) <= 8, |
1784 | "PackExpansionTypeBitfields is larger than 8 bytes"); |
1785 | }; |
1786 | |
1787 | private: |
1788 | template <class T> friend class TypePropertyCache; |
1789 | |
1790 | /// Set whether this type comes from an AST file. |
1791 | void setFromAST(bool V = true) const { |
1792 | TypeBits.FromAST = V; |
1793 | } |
1794 | |
1795 | protected: |
1796 | friend class ASTContext; |
1797 | |
1798 | Type(TypeClass tc, QualType canon, bool Dependent, |
1799 | bool InstantiationDependent, bool VariablyModified, |
1800 | bool ContainsUnexpandedParameterPack) |
1801 | : ExtQualsTypeCommonBase(this, |
1802 | canon.isNull() ? QualType(this_(), 0) : canon) { |
1803 | TypeBits.TC = tc; |
1804 | TypeBits.Dependent = Dependent; |
1805 | TypeBits.InstantiationDependent = Dependent || InstantiationDependent; |
1806 | TypeBits.VariablyModified = VariablyModified; |
1807 | TypeBits.ContainsUnexpandedParameterPack = ContainsUnexpandedParameterPack; |
1808 | TypeBits.CacheValid = false; |
1809 | TypeBits.CachedLocalOrUnnamed = false; |
1810 | TypeBits.CachedLinkage = NoLinkage; |
1811 | TypeBits.FromAST = false; |
1812 | } |
1813 | |
1814 | // silence VC++ warning C4355: 'this' : used in base member initializer list |
1815 | Type *this_() { return this; } |
1816 | |
1817 | void setDependent(bool D = true) { |
1818 | TypeBits.Dependent = D; |
1819 | if (D) |
1820 | TypeBits.InstantiationDependent = true; |
1821 | } |
1822 | |
1823 | void setInstantiationDependent(bool D = true) { |
1824 | TypeBits.InstantiationDependent = D; } |
1825 | |
1826 | void setVariablyModified(bool VM = true) { TypeBits.VariablyModified = VM; } |
1827 | |
1828 | void setContainsUnexpandedParameterPack(bool PP = true) { |
1829 | TypeBits.ContainsUnexpandedParameterPack = PP; |
1830 | } |
1831 | |
1832 | public: |
1833 | friend class ASTReader; |
1834 | friend class ASTWriter; |
1835 | |
1836 | Type(const Type &) = delete; |
1837 | Type(Type &&) = delete; |
1838 | Type &operator=(const Type &) = delete; |
1839 | Type &operator=(Type &&) = delete; |
1840 | |
1841 | TypeClass getTypeClass() const { return static_cast<TypeClass>(TypeBits.TC); } |
1842 | |
1843 | /// Whether this type comes from an AST file. |
1844 | bool isFromAST() const { return TypeBits.FromAST; } |
1845 | |
1846 | /// Whether this type is or contains an unexpanded parameter |
1847 | /// pack, used to support C++0x variadic templates. |
1848 | /// |
1849 | /// A type that contains a parameter pack shall be expanded by the |
1850 | /// ellipsis operator at some point. For example, the typedef in the |
1851 | /// following example contains an unexpanded parameter pack 'T': |
1852 | /// |
1853 | /// \code |
1854 | /// template<typename ...T> |
1855 | /// struct X { |
1856 | /// typedef T* pointer_types; // ill-formed; T is a parameter pack. |
1857 | /// }; |
1858 | /// \endcode |
1859 | /// |
1860 | /// Note that this routine does not specify which |
1861 | bool containsUnexpandedParameterPack() const { |
1862 | return TypeBits.ContainsUnexpandedParameterPack; |
1863 | } |
1864 | |
1865 | /// Determines if this type would be canonical if it had no further |
1866 | /// qualification. |
1867 | bool isCanonicalUnqualified() const { |
1868 | return CanonicalType == QualType(this, 0); |
1869 | } |
1870 | |
1871 | /// Pull a single level of sugar off of this locally-unqualified type. |
1872 | /// Users should generally prefer SplitQualType::getSingleStepDesugaredType() |
1873 | /// or QualType::getSingleStepDesugaredType(const ASTContext&). |
1874 | QualType getLocallyUnqualifiedSingleStepDesugaredType() const; |
1875 | |
1876 | /// Types are partitioned into 3 broad categories (C99 6.2.5p1): |
1877 | /// object types, function types, and incomplete types. |
1878 | |
1879 | /// Return true if this is an incomplete type. |
1880 | /// A type that can describe objects, but which lacks information needed to |
1881 | /// determine its size (e.g. void, or a fwd declared struct). Clients of this |
1882 | /// routine will need to determine if the size is actually required. |
1883 | /// |
1884 | /// Def If non-null, and the type refers to some kind of declaration |
1885 | /// that can be completed (such as a C struct, C++ class, or Objective-C |
1886 | /// class), will be set to the declaration. |
1887 | bool isIncompleteType(NamedDecl **Def = nullptr) const; |
1888 | |
1889 | /// Return true if this is an incomplete or object |
1890 | /// type, in other words, not a function type. |
1891 | bool isIncompleteOrObjectType() const { |
1892 | return !isFunctionType(); |
1893 | } |
1894 | |
1895 | /// Determine whether this type is an object type. |
1896 | bool isObjectType() const { |
1897 | // C++ [basic.types]p8: |
1898 | // An object type is a (possibly cv-qualified) type that is not a |
1899 | // function type, not a reference type, and not a void type. |
1900 | return !isReferenceType() && !isFunctionType() && !isVoidType(); |
1901 | } |
1902 | |
1903 | /// Return true if this is a literal type |
1904 | /// (C++11 [basic.types]p10) |
1905 | bool isLiteralType(const ASTContext &Ctx) const; |
1906 | |
1907 | /// Test if this type is a standard-layout type. |
1908 | /// (C++0x [basic.type]p9) |
1909 | bool isStandardLayoutType() const; |
1910 | |
1911 | /// Helper methods to distinguish type categories. All type predicates |
1912 | /// operate on the canonical type, ignoring typedefs and qualifiers. |
1913 | |
1914 | /// Returns true if the type is a builtin type. |
1915 | bool isBuiltinType() const; |
1916 | |
1917 | /// Test for a particular builtin type. |
1918 | bool isSpecificBuiltinType(unsigned K) const; |
1919 | |
1920 | /// Test for a type which does not represent an actual type-system type but |
1921 | /// is instead used as a placeholder for various convenient purposes within |
1922 | /// Clang. All such types are BuiltinTypes. |
1923 | bool isPlaceholderType() const; |
1924 | const BuiltinType *getAsPlaceholderType() const; |
1925 | |
1926 | /// Test for a specific placeholder type. |
1927 | bool isSpecificPlaceholderType(unsigned K) const; |
1928 | |
1929 | /// Test for a placeholder type other than Overload; see |
1930 | /// BuiltinType::isNonOverloadPlaceholderType. |
1931 | bool isNonOverloadPlaceholderType() const; |
1932 | |
1933 | /// isIntegerType() does *not* include complex integers (a GCC extension). |
1934 | /// isComplexIntegerType() can be used to test for complex integers. |
1935 | bool isIntegerType() const; // C99 6.2.5p17 (int, char, bool, enum) |
1936 | bool isEnumeralType() const; |
1937 | |
1938 | /// Determine whether this type is a scoped enumeration type. |
1939 | bool isScopedEnumeralType() const; |
1940 | bool isBooleanType() const; |
1941 | bool isCharType() const; |
1942 | bool isWideCharType() const; |
1943 | bool isChar8Type() const; |
1944 | bool isChar16Type() const; |
1945 | bool isChar32Type() const; |
1946 | bool isAnyCharacterType() const; |
1947 | bool isIntegralType(const ASTContext &Ctx) const; |
1948 | |
1949 | /// Determine whether this type is an integral or enumeration type. |
1950 | bool isIntegralOrEnumerationType() const; |
1951 | |
1952 | /// Determine whether this type is an integral or unscoped enumeration type. |
1953 | bool isIntegralOrUnscopedEnumerationType() const; |
1954 | |
1955 | /// Floating point categories. |
1956 | bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double) |
1957 | /// isComplexType() does *not* include complex integers (a GCC extension). |
1958 | /// isComplexIntegerType() can be used to test for complex integers. |
1959 | bool isComplexType() const; // C99 6.2.5p11 (complex) |
1960 | bool isAnyComplexType() const; // C99 6.2.5p11 (complex) + Complex Int. |
1961 | bool isFloatingType() const; // C99 6.2.5p11 (real floating + complex) |
1962 | bool isHalfType() const; // OpenCL 6.1.1.1, NEON (IEEE 754-2008 half) |
1963 | bool isFloat16Type() const; // C11 extension ISO/IEC TS 18661 |
1964 | bool isFloat128Type() const; |
1965 | bool isRealType() const; // C99 6.2.5p17 (real floating + integer) |
1966 | bool isArithmeticType() const; // C99 6.2.5p18 (integer + floating) |
1967 | bool isVoidType() const; // C99 6.2.5p19 |
1968 | bool isScalarType() const; // C99 6.2.5p21 (arithmetic + pointers) |
1969 | bool isAggregateType() const; |
1970 | bool isFundamentalType() const; |
1971 | bool isCompoundType() const; |
1972 | |
1973 | // Type Predicates: Check to see if this type is structurally the specified |
1974 | // type, ignoring typedefs and qualifiers. |
1975 | bool isFunctionType() const; |
1976 | bool isFunctionNoProtoType() const { return getAs<FunctionNoProtoType>(); } |
1977 | bool isFunctionProtoType() const { return getAs<FunctionProtoType>(); } |
1978 | bool isPointerType() const; |
1979 | bool isAnyPointerType() const; // Any C pointer or ObjC object pointer |
1980 | bool isBlockPointerType() const; |
1981 | bool isVoidPointerType() const; |
1982 | bool isReferenceType() const; |
1983 | bool isLValueReferenceType() const; |
1984 | bool isRValueReferenceType() const; |
1985 | bool isFunctionPointerType() const; |
1986 | bool isFunctionReferenceType() const; |
1987 | bool isMemberPointerType() const; |
1988 | bool isMemberFunctionPointerType() const; |
1989 | bool isMemberDataPointerType() const; |
1990 | bool isArrayType() const; |
1991 | bool isConstantArrayType() const; |
1992 | bool isIncompleteArrayType() const; |
1993 | bool isVariableArrayType() const; |
1994 | bool isDependentSizedArrayType() const; |
1995 | bool isRecordType() const; |
1996 | bool isClassType() const; |
1997 | bool isStructureType() const; |
1998 | bool isObjCBoxableRecordType() const; |
1999 | bool isInterfaceType() const; |
2000 | bool isStructureOrClassType() const; |
2001 | bool isUnionType() const; |
2002 | bool isComplexIntegerType() const; // GCC _Complex integer type. |
2003 | bool isVectorType() const; // GCC vector type. |
2004 | bool isExtVectorType() const; // Extended vector type. |
2005 | bool isDependentAddressSpaceType() const; // value-dependent address space qualifier |
2006 | bool isObjCObjectPointerType() const; // pointer to ObjC object |
2007 | bool isObjCRetainableType() const; // ObjC object or block pointer |
2008 | bool isObjCLifetimeType() const; // (array of)* retainable type |
2009 | bool isObjCIndirectLifetimeType() const; // (pointer to)* lifetime type |
2010 | bool isObjCNSObjectType() const; // __attribute__((NSObject)) |
2011 | bool isObjCIndependentClassType() const; // __attribute__((objc_independent_class)) |
2012 | // FIXME: change this to 'raw' interface type, so we can used 'interface' type |
2013 | // for the common case. |
2014 | bool isObjCObjectType() const; // NSString or typeof(*(id)0) |
2015 | bool isObjCQualifiedInterfaceType() const; // NSString<foo> |
2016 | bool isObjCQualifiedIdType() const; // id<foo> |
2017 | bool isObjCQualifiedClassType() const; // Class<foo> |
2018 | bool isObjCObjectOrInterfaceType() const; |
2019 | bool isObjCIdType() const; // id |
2020 | bool isDecltypeType() const; |
2021 | /// Was this type written with the special inert-in-ARC __unsafe_unretained |
2022 | /// qualifier? |
2023 | /// |
2024 | /// This approximates the answer to the following question: if this |
2025 | /// translation unit were compiled in ARC, would this type be qualified |
2026 | /// with __unsafe_unretained? |
2027 | bool isObjCInertUnsafeUnretainedType() const { |
2028 | return hasAttr(attr::ObjCInertUnsafeUnretained); |
2029 | } |
2030 | |
2031 | /// Whether the type is Objective-C 'id' or a __kindof type of an |
2032 | /// object type, e.g., __kindof NSView * or __kindof id |
2033 | /// <NSCopying>. |
2034 | /// |
2035 | /// \param bound Will be set to the bound on non-id subtype types, |
2036 | /// which will be (possibly specialized) Objective-C class type, or |
2037 | /// null for 'id. |
2038 | bool isObjCIdOrObjectKindOfType(const ASTContext &ctx, |
2039 | const ObjCObjectType *&bound) const; |
2040 | |
2041 | bool isObjCClassType() const; // Class |
2042 | |
2043 | /// Whether the type is Objective-C 'Class' or a __kindof type of an |
2044 | /// Class type, e.g., __kindof Class <NSCopying>. |
2045 | /// |
2046 | /// Unlike \c isObjCIdOrObjectKindOfType, there is no relevant bound |
2047 | /// here because Objective-C's type system cannot express "a class |
2048 | /// object for a subclass of NSFoo". |
2049 | bool isObjCClassOrClassKindOfType() const; |
2050 | |
2051 | bool isBlockCompatibleObjCPointerType(ASTContext &ctx) const; |
2052 | bool isObjCSelType() const; // Class |
2053 | bool isObjCBuiltinType() const; // 'id' or 'Class' |
2054 | bool isObjCARCBridgableType() const; |
2055 | bool isCARCBridgableType() const; |
2056 | bool isTemplateTypeParmType() const; // C++ template type parameter |
2057 | bool isNullPtrType() const; // C++11 std::nullptr_t |
2058 | bool isNothrowT() const; // C++ std::nothrow_t |
2059 | bool isAlignValT() const; // C++17 std::align_val_t |
2060 | bool isStdByteType() const; // C++17 std::byte |
2061 | bool isAtomicType() const; // C11 _Atomic() |
2062 | |
2063 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ |
2064 | bool is##Id##Type() const; |
2065 | #include "clang/Basic/OpenCLImageTypes.def" |
2066 | |
2067 | bool isImageType() const; // Any OpenCL image type |
2068 | |
2069 | bool isSamplerT() const; // OpenCL sampler_t |
2070 | bool isEventT() const; // OpenCL event_t |
2071 | bool isClkEventT() const; // OpenCL clk_event_t |
2072 | bool isQueueT() const; // OpenCL queue_t |
2073 | bool isReserveIDT() const; // OpenCL reserve_id_t |
2074 | |
2075 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ |
2076 | bool is##Id##Type() const; |
2077 | #include "clang/Basic/OpenCLExtensionTypes.def" |
2078 | // Type defined in cl_intel_device_side_avc_motion_estimation OpenCL extension |
2079 | bool isOCLIntelSubgroupAVCType() const; |
2080 | bool isOCLExtOpaqueType() const; // Any OpenCL extension type |
2081 | |
2082 | bool isPipeType() const; // OpenCL pipe type |
2083 | bool isOpenCLSpecificType() const; // Any OpenCL specific type |
2084 | |
2085 | /// Determines if this type, which must satisfy |
2086 | /// isObjCLifetimeType(), is implicitly __unsafe_unretained rather |
2087 | /// than implicitly __strong. |
2088 | bool isObjCARCImplicitlyUnretainedType() const; |
2089 | |
2090 | /// Return the implicit lifetime for this type, which must not be dependent. |
2091 | Qualifiers::ObjCLifetime getObjCARCImplicitLifetime() const; |
2092 | |
2093 | enum ScalarTypeKind { |
2094 | STK_CPointer, |
2095 | STK_BlockPointer, |
2096 | STK_ObjCObjectPointer, |
2097 | STK_MemberPointer, |
2098 | STK_Bool, |
2099 | STK_Integral, |
2100 | STK_Floating, |
2101 | STK_IntegralComplex, |
2102 | STK_FloatingComplex, |
2103 | STK_FixedPoint |
2104 | }; |
2105 | |
2106 | /// Given that this is a scalar type, classify it. |
2107 | ScalarTypeKind getScalarTypeKind() const; |
2108 | |
2109 | /// Whether this type is a dependent type, meaning that its definition |
2110 | /// somehow depends on a template parameter (C++ [temp.dep.type]). |
2111 | bool isDependentType() const { return TypeBits.Dependent; } |
2112 | |
2113 | /// Determine whether this type is an instantiation-dependent type, |
2114 | /// meaning that the type involves a template parameter (even if the |
2115 | /// definition does not actually depend on the type substituted for that |
2116 | /// template parameter). |
2117 | bool isInstantiationDependentType() const { |
2118 | return TypeBits.InstantiationDependent; |
2119 | } |
2120 | |
2121 | /// Determine whether this type is an undeduced type, meaning that |
2122 | /// it somehow involves a C++11 'auto' type or similar which has not yet been |
2123 | /// deduced. |
2124 | bool isUndeducedType() const; |
2125 | |
2126 | /// Whether this type is a variably-modified type (C99 6.7.5). |
2127 | bool isVariablyModifiedType() const { return TypeBits.VariablyModified; } |
2128 | |
2129 | /// Whether this type involves a variable-length array type |
2130 | /// with a definite size. |
2131 | bool hasSizedVLAType() const; |
2132 | |
2133 | /// Whether this type is or contains a local or unnamed type. |
2134 | bool hasUnnamedOrLocalType() const; |
2135 | |
2136 | bool isOverloadableType() const; |
2137 | |
2138 | /// Determine wither this type is a C++ elaborated-type-specifier. |
2139 | bool isElaboratedTypeSpecifier() const; |
2140 | |
2141 | bool canDecayToPointerType() const; |
2142 | |
2143 | /// Whether this type is represented natively as a pointer. This includes |
2144 | /// pointers, references, block pointers, and Objective-C interface, |
2145 | /// qualified id, and qualified interface types, as well as nullptr_t. |
2146 | bool hasPointerRepresentation() const; |
2147 | |
2148 | /// Whether this type can represent an objective pointer type for the |
2149 | /// purpose of GC'ability |
2150 | bool hasObjCPointerRepresentation() const; |
2151 | |
2152 | /// Determine whether this type has an integer representation |
2153 | /// of some sort, e.g., it is an integer type or a vector. |
2154 | bool hasIntegerRepresentation() const; |
2155 | |
2156 | /// Determine whether this type has an signed integer representation |
2157 | /// of some sort, e.g., it is an signed integer type or a vector. |
2158 | bool hasSignedIntegerRepresentation() const; |
2159 | |
2160 | /// Determine whether this type has an unsigned integer representation |
2161 | /// of some sort, e.g., it is an unsigned integer type or a vector. |
2162 | bool hasUnsignedIntegerRepresentation() const; |
2163 | |
2164 | /// Determine whether this type has a floating-point representation |
2165 | /// of some sort, e.g., it is a floating-point type or a vector thereof. |
2166 | bool hasFloatingRepresentation() const; |
2167 | |
2168 | // Type Checking Functions: Check to see if this type is structurally the |
2169 | // specified type, ignoring typedefs and qualifiers, and return a pointer to |
2170 | // the best type we can. |
2171 | const RecordType *getAsStructureType() const; |
2172 | /// NOTE: getAs*ArrayType are methods on ASTContext. |
2173 | const RecordType *getAsUnionType() const; |
2174 | const ComplexType *getAsComplexIntegerType() const; // GCC complex int type. |
2175 | const ObjCObjectType *getAsObjCInterfaceType() const; |
2176 | |
2177 | // The following is a convenience method that returns an ObjCObjectPointerType |
2178 | // for object declared using an interface. |
2179 | const ObjCObjectPointerType *getAsObjCInterfacePointerType() const; |
2180 | const ObjCObjectPointerType *getAsObjCQualifiedIdType() const; |
2181 | const ObjCObjectPointerType *getAsObjCQualifiedClassType() const; |
2182 | const ObjCObjectType *getAsObjCQualifiedInterfaceType() const; |
2183 | |
2184 | /// Retrieves the CXXRecordDecl that this type refers to, either |
2185 | /// because the type is a RecordType or because it is the injected-class-name |
2186 | /// type of a class template or class template partial specialization. |
2187 | CXXRecordDecl *getAsCXXRecordDecl() const; |
2188 | |
2189 | /// Retrieves the RecordDecl this type refers to. |
2190 | RecordDecl *getAsRecordDecl() const; |
2191 | |
2192 | /// Retrieves the TagDecl that this type refers to, either |
2193 | /// because the type is a TagType or because it is the injected-class-name |
2194 | /// type of a class template or class template partial specialization. |
2195 | TagDecl *getAsTagDecl() const; |
2196 | |
2197 | /// If this is a pointer or reference to a RecordType, return the |
2198 | /// CXXRecordDecl that the type refers to. |
2199 | /// |
2200 | /// If this is not a pointer or reference, or the type being pointed to does |
2201 | /// not refer to a CXXRecordDecl, returns NULL. |
2202 | const CXXRecordDecl *getPointeeCXXRecordDecl() const; |
2203 | |
2204 | /// Get the DeducedType whose type will be deduced for a variable with |
2205 | /// an initializer of this type. This looks through declarators like pointer |
2206 | /// types, but not through decltype or typedefs. |
2207 | DeducedType *getContainedDeducedType() const; |
2208 | |
2209 | /// Get the AutoType whose type will be deduced for a variable with |
2210 | /// an initializer of this type. This looks through declarators like pointer |
2211 | /// types, but not through decltype or typedefs. |
2212 | AutoType *getContainedAutoType() const { |
2213 | return dyn_cast_or_null<AutoType>(getContainedDeducedType()); |
2214 | } |
2215 | |
2216 | /// Determine whether this type was written with a leading 'auto' |
2217 | /// corresponding to a trailing return type (possibly for a nested |
2218 | /// function type within a pointer to function type or similar). |
2219 | bool hasAutoForTrailingReturnType() const; |
2220 | |
2221 | /// Member-template getAs<specific type>'. Look through sugar for |
2222 | /// an instance of \<specific type>. This scheme will eventually |
2223 | /// replace the specific getAsXXXX methods above. |
2224 | /// |
2225 | /// There are some specializations of this member template listed |
2226 | /// immediately following this class. |
2227 | template <typename T> const T *getAs() const; |
2228 | |
2229 | /// Member-template getAsAdjusted<specific type>. Look through specific kinds |
2230 | /// of sugar (parens, attributes, etc) for an instance of \<specific type>. |
2231 | /// This is used when you need to walk over sugar nodes that represent some |
2232 | /// kind of type adjustment from a type that was written as a \<specific type> |
2233 | /// to another type that is still canonically a \<specific type>. |
2234 | template <typename T> const T *getAsAdjusted() const; |
2235 | |
2236 | /// A variant of getAs<> for array types which silently discards |
2237 | /// qualifiers from the outermost type. |
2238 | const ArrayType *getAsArrayTypeUnsafe() const; |
2239 | |
2240 | /// Member-template castAs<specific type>. Look through sugar for |
2241 | /// the underlying instance of \<specific type>. |
2242 | /// |
2243 | /// This method has the same relationship to getAs<T> as cast<T> has |
2244 | /// to dyn_cast<T>; which is to say, the underlying type *must* |
2245 | /// have the intended type, and this method will never return null. |
2246 | template <typename T> const T *castAs() const; |
2247 | |
2248 | /// A variant of castAs<> for array type which silently discards |
2249 | /// qualifiers from the outermost type. |
2250 | const ArrayType *castAsArrayTypeUnsafe() const; |
2251 | |
2252 | /// Determine whether this type had the specified attribute applied to it |
2253 | /// (looking through top-level type sugar). |
2254 | bool hasAttr(attr::Kind AK) const; |
2255 | |
2256 | /// Get the base element type of this type, potentially discarding type |
2257 | /// qualifiers. This should never be used when type qualifiers |
2258 | /// are meaningful. |
2259 | const Type *getBaseElementTypeUnsafe() const; |
2260 | |
2261 | /// If this is an array type, return the element type of the array, |
2262 | /// potentially with type qualifiers missing. |
2263 | /// This should never be used when type qualifiers are meaningful. |
2264 | const Type *getArrayElementTypeNoTypeQual() const; |
2265 | |
2266 | /// If this is a pointer type, return the pointee type. |
2267 | /// If this is an array type, return the array element type. |
2268 | /// This should never be used when type qualifiers are meaningful. |
2269 | const Type *getPointeeOrArrayElementType() const; |
2270 | |
2271 | /// If this is a pointer, ObjC object pointer, or block |
2272 | /// pointer, this returns the respective pointee. |
2273 | QualType getPointeeType() const; |
2274 | |
2275 | /// Return the specified type with any "sugar" removed from the type, |
2276 | /// removing any typedefs, typeofs, etc., as well as any qualifiers. |
2277 | const Type *getUnqualifiedDesugaredType() const; |
2278 | |
2279 | /// More type predicates useful for type checking/promotion |
2280 | bool isPromotableIntegerType() const; // C99 6.3.1.1p2 |
2281 | |
2282 | /// Return true if this is an integer type that is |
2283 | /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], |
2284 | /// or an enum decl which has a signed representation. |
2285 | bool isSignedIntegerType() const; |
2286 | |
2287 | /// Return true if this is an integer type that is |
2288 | /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], |
2289 | /// or an enum decl which has an unsigned representation. |
2290 | bool isUnsignedIntegerType() const; |
2291 | |
2292 | /// Determines whether this is an integer type that is signed or an |
2293 | /// enumeration types whose underlying type is a signed integer type. |
2294 | bool isSignedIntegerOrEnumerationType() const; |
2295 | |
2296 | /// Determines whether this is an integer type that is unsigned or an |
2297 | /// enumeration types whose underlying type is a unsigned integer type. |
2298 | bool isUnsignedIntegerOrEnumerationType() const; |
2299 | |
2300 | /// Return true if this is a fixed point type according to |
2301 | /// ISO/IEC JTC1 SC22 WG14 N1169. |
2302 | bool isFixedPointType() const; |
2303 | |
2304 | /// Return true if this is a fixed point or integer type. |
2305 | bool isFixedPointOrIntegerType() const; |
2306 | |
2307 | /// Return true if this is a saturated fixed point type according to |
2308 | /// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned. |
2309 | bool isSaturatedFixedPointType() const; |
2310 | |
2311 | /// Return true if this is a saturated fixed point type according to |
2312 | /// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned. |
2313 | bool isUnsaturatedFixedPointType() const; |
2314 | |
2315 | /// Return true if this is a fixed point type that is signed according |
2316 | /// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated. |
2317 | bool isSignedFixedPointType() const; |
2318 | |
2319 | /// Return true if this is a fixed point type that is unsigned according |
2320 | /// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated. |
2321 | bool isUnsignedFixedPointType() const; |
2322 | |
2323 | /// Return true if this is not a variable sized type, |
2324 | /// according to the rules of C99 6.7.5p3. It is not legal to call this on |
2325 | /// incomplete types. |
2326 | bool isConstantSizeType() const; |
2327 | |
2328 | /// Returns true if this type can be represented by some |
2329 | /// set of type specifiers. |
2330 | bool isSpecifierType() const; |
2331 | |
2332 | /// Determine the linkage of this type. |
2333 | Linkage getLinkage() const; |
2334 | |
2335 | /// Determine the visibility of this type. |
2336 | Visibility getVisibility() const { |
2337 | return getLinkageAndVisibility().getVisibility(); |
2338 | } |
2339 | |
2340 | /// Return true if the visibility was explicitly set is the code. |
2341 | bool isVisibilityExplicit() const { |
2342 | return getLinkageAndVisibility().isVisibilityExplicit(); |
2343 | } |
2344 | |
2345 | /// Determine the linkage and visibility of this type. |
2346 | LinkageInfo getLinkageAndVisibility() const; |
2347 | |
2348 | /// True if the computed linkage is valid. Used for consistency |
2349 | /// checking. Should always return true. |
2350 | bool isLinkageValid() const; |
2351 | |
2352 | /// Determine the nullability of the given type. |
2353 | /// |
2354 | /// Note that nullability is only captured as sugar within the type |
2355 | /// system, not as part of the canonical type, so nullability will |
2356 | /// be lost by canonicalization and desugaring. |
2357 | Optional<NullabilityKind> getNullability(const ASTContext &context) const; |
2358 | |
2359 | /// Determine whether the given type can have a nullability |
2360 | /// specifier applied to it, i.e., if it is any kind of pointer type. |
2361 | /// |
2362 | /// \param ResultIfUnknown The value to return if we don't yet know whether |
2363 | /// this type can have nullability because it is dependent. |
2364 | bool canHaveNullability(bool ResultIfUnknown = true) const; |
2365 | |
2366 | /// Retrieve the set of substitutions required when accessing a member |
2367 | /// of the Objective-C receiver type that is declared in the given context. |
2368 | /// |
2369 | /// \c *this is the type of the object we're operating on, e.g., the |
2370 | /// receiver for a message send or the base of a property access, and is |
2371 | /// expected to be of some object or object pointer type. |
2372 | /// |
2373 | /// \param dc The declaration context for which we are building up a |
2374 | /// substitution mapping, which should be an Objective-C class, extension, |
2375 | /// category, or method within. |
2376 | /// |
2377 | /// \returns an array of type arguments that can be substituted for |
2378 | /// the type parameters of the given declaration context in any type described |
2379 | /// within that context, or an empty optional to indicate that no |
2380 | /// substitution is required. |
2381 | Optional<ArrayRef<QualType>> |
2382 | getObjCSubstitutions(const DeclContext *dc) const; |
2383 | |
2384 | /// Determines if this is an ObjC interface type that may accept type |
2385 | /// parameters. |
2386 | bool acceptsObjCTypeParams() const; |
2387 | |
2388 | const char *getTypeClassName() const; |
2389 | |
2390 | QualType getCanonicalTypeInternal() const { |
2391 | return CanonicalType; |
2392 | } |
2393 | |
2394 | CanQualType getCanonicalTypeUnqualified() const; // in CanonicalType.h |
2395 | void dump() const; |
2396 | void dump(llvm::raw_ostream &OS) const; |
2397 | }; |
2398 | |
2399 | /// This will check for a TypedefType by removing any existing sugar |
2400 | /// until it reaches a TypedefType or a non-sugared type. |
2401 | template <> const TypedefType *Type::getAs() const; |
2402 | |
2403 | /// This will check for a TemplateSpecializationType by removing any |
2404 | /// existing sugar until it reaches a TemplateSpecializationType or a |
2405 | /// non-sugared type. |
2406 | template <> const TemplateSpecializationType *Type::getAs() const; |
2407 | |
2408 | /// This will check for an AttributedType by removing any existing sugar |
2409 | /// until it reaches an AttributedType or a non-sugared type. |
2410 | template <> const AttributedType *Type::getAs() const; |
2411 | |
2412 | // We can do canonical leaf types faster, because we don't have to |
2413 | // worry about preserving child type decoration. |
2414 | #define TYPE(Class, Base) |
2415 | #define LEAF_TYPE(Class) \ |
2416 | template <> inline const Class##Type *Type::getAs() const { \ |
2417 | return dyn_cast<Class##Type>(CanonicalType); \ |
2418 | } \ |
2419 | template <> inline const Class##Type *Type::castAs() const { \ |
2420 | return cast<Class##Type>(CanonicalType); \ |
2421 | } |
2422 | #include "clang/AST/TypeNodes.inc" |
2423 | |
2424 | /// This class is used for builtin types like 'int'. Builtin |
2425 | /// types are always canonical and have a literal name field. |
2426 | class BuiltinType : public Type { |
2427 | public: |
2428 | enum Kind { |
2429 | // OpenCL image types |
2430 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) Id, |
2431 | #include "clang/Basic/OpenCLImageTypes.def" |
2432 | // OpenCL extension types |
2433 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) Id, |
2434 | #include "clang/Basic/OpenCLExtensionTypes.def" |
2435 | // SVE Types |
2436 | #define SVE_TYPE(Name, Id, SingletonId) Id, |
2437 | #include "clang/Basic/AArch64SVEACLETypes.def" |
2438 | // All other builtin types |
2439 | #define BUILTIN_TYPE(Id, SingletonId) Id, |
2440 | #define LAST_BUILTIN_TYPE(Id) LastKind = Id |
2441 | #include "clang/AST/BuiltinTypes.def" |
2442 | }; |
2443 | |
2444 | private: |
2445 | friend class ASTContext; // ASTContext creates these. |
2446 | |
2447 | BuiltinType(Kind K) |
2448 | : Type(Builtin, QualType(), /*Dependent=*/(K == Dependent), |
2449 | /*InstantiationDependent=*/(K == Dependent), |
2450 | /*VariablyModified=*/false, |
2451 | /*Unexpanded parameter pack=*/false) { |
2452 | BuiltinTypeBits.Kind = K; |
2453 | } |
2454 | |
2455 | public: |
2456 | Kind getKind() const { return static_cast<Kind>(BuiltinTypeBits.Kind); } |
2457 | StringRef getName(const PrintingPolicy &Policy) const; |
2458 | |
2459 | const char *getNameAsCString(const PrintingPolicy &Policy) const { |
2460 | // The StringRef is null-terminated. |
2461 | StringRef str = getName(Policy); |
2462 | assert(!str.empty() && str.data()[str.size()] == '\0')((!str.empty() && str.data()[str.size()] == '\0') ? static_cast <void> (0) : __assert_fail ("!str.empty() && str.data()[str.size()] == '\\0'" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 2462, __PRETTY_FUNCTION__)); |
2463 | return str.data(); |
2464 | } |
2465 | |
2466 | bool isSugared() const { return false; } |
2467 | QualType desugar() const { return QualType(this, 0); } |
2468 | |
2469 | bool isInteger() const { |
2470 | return getKind() >= Bool && getKind() <= Int128; |
2471 | } |
2472 | |
2473 | bool isSignedInteger() const { |
2474 | return getKind() >= Char_S && getKind() <= Int128; |
2475 | } |
2476 | |
2477 | bool isUnsignedInteger() const { |
2478 | return getKind() >= Bool && getKind() <= UInt128; |
2479 | } |
2480 | |
2481 | bool isFloatingPoint() const { |
2482 | return getKind() >= Half && getKind() <= Float128; |
2483 | } |
2484 | |
2485 | /// Determines whether the given kind corresponds to a placeholder type. |
2486 | static bool isPlaceholderTypeKind(Kind K) { |
2487 | return K >= Overload; |
2488 | } |
2489 | |
2490 | /// Determines whether this type is a placeholder type, i.e. a type |
2491 | /// which cannot appear in arbitrary positions in a fully-formed |
2492 | /// expression. |
2493 | bool isPlaceholderType() const { |
2494 | return isPlaceholderTypeKind(getKind()); |
2495 | } |
2496 | |
2497 | /// Determines whether this type is a placeholder type other than |
2498 | /// Overload. Most placeholder types require only syntactic |
2499 | /// information about their context in order to be resolved (e.g. |
2500 | /// whether it is a call expression), which means they can (and |
2501 | /// should) be resolved in an earlier "phase" of analysis. |
2502 | /// Overload expressions sometimes pick up further information |
2503 | /// from their context, like whether the context expects a |
2504 | /// specific function-pointer type, and so frequently need |
2505 | /// special treatment. |
2506 | bool isNonOverloadPlaceholderType() const { |
2507 | return getKind() > Overload; |
2508 | } |
2509 | |
2510 | static bool classof(const Type *T) { return T->getTypeClass() == Builtin; } |
2511 | }; |
2512 | |
2513 | /// Complex values, per C99 6.2.5p11. This supports the C99 complex |
2514 | /// types (_Complex float etc) as well as the GCC integer complex extensions. |
2515 | class ComplexType : public Type, public llvm::FoldingSetNode { |
2516 | friend class ASTContext; // ASTContext creates these. |
2517 | |
2518 | QualType ElementType; |
2519 | |
2520 | ComplexType(QualType Element, QualType CanonicalPtr) |
2521 | : Type(Complex, CanonicalPtr, Element->isDependentType(), |
2522 | Element->isInstantiationDependentType(), |
2523 | Element->isVariablyModifiedType(), |
2524 | Element->containsUnexpandedParameterPack()), |
2525 | ElementType(Element) {} |
2526 | |
2527 | public: |
2528 | QualType getElementType() const { return ElementType; } |
2529 | |
2530 | bool isSugared() const { return false; } |
2531 | QualType desugar() const { return QualType(this, 0); } |
2532 | |
2533 | void Profile(llvm::FoldingSetNodeID &ID) { |
2534 | Profile(ID, getElementType()); |
2535 | } |
2536 | |
2537 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) { |
2538 | ID.AddPointer(Element.getAsOpaquePtr()); |
2539 | } |
2540 | |
2541 | static bool classof(const Type *T) { return T->getTypeClass() == Complex; } |
2542 | }; |
2543 | |
2544 | /// Sugar for parentheses used when specifying types. |
2545 | class ParenType : public Type, public llvm::FoldingSetNode { |
2546 | friend class ASTContext; // ASTContext creates these. |
2547 | |
2548 | QualType Inner; |
2549 | |
2550 | ParenType(QualType InnerType, QualType CanonType) |
2551 | : Type(Paren, CanonType, InnerType->isDependentType(), |
2552 | InnerType->isInstantiationDependentType(), |
2553 | InnerType->isVariablyModifiedType(), |
2554 | InnerType->containsUnexpandedParameterPack()), |
2555 | Inner(InnerType) {} |
2556 | |
2557 | public: |
2558 | QualType getInnerType() const { return Inner; } |
2559 | |
2560 | bool isSugared() const { return true; } |
2561 | QualType desugar() const { return getInnerType(); } |
2562 | |
2563 | void Profile(llvm::FoldingSetNodeID &ID) { |
2564 | Profile(ID, getInnerType()); |
2565 | } |
2566 | |
2567 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Inner) { |
2568 | Inner.Profile(ID); |
2569 | } |
2570 | |
2571 | static bool classof(const Type *T) { return T->getTypeClass() == Paren; } |
2572 | }; |
2573 | |
2574 | /// PointerType - C99 6.7.5.1 - Pointer Declarators. |
2575 | class PointerType : public Type, public llvm::FoldingSetNode { |
2576 | friend class ASTContext; // ASTContext creates these. |
2577 | |
2578 | QualType PointeeType; |
2579 | |
2580 | PointerType(QualType Pointee, QualType CanonicalPtr) |
2581 | : Type(Pointer, CanonicalPtr, Pointee->isDependentType(), |
2582 | Pointee->isInstantiationDependentType(), |
2583 | Pointee->isVariablyModifiedType(), |
2584 | Pointee->containsUnexpandedParameterPack()), |
2585 | PointeeType(Pointee) {} |
2586 | |
2587 | public: |
2588 | QualType getPointeeType() const { return PointeeType; } |
2589 | |
2590 | /// Returns true if address spaces of pointers overlap. |
2591 | /// OpenCL v2.0 defines conversion rules for pointers to different |
2592 | /// address spaces (OpenCLC v2.0 s6.5.5) and notion of overlapping |
2593 | /// address spaces. |
2594 | /// CL1.1 or CL1.2: |
2595 | /// address spaces overlap iff they are they same. |
2596 | /// CL2.0 adds: |
2597 | /// __generic overlaps with any address space except for __constant. |
2598 | bool isAddressSpaceOverlapping(const PointerType &other) const { |
2599 | Qualifiers thisQuals = PointeeType.getQualifiers(); |
2600 | Qualifiers otherQuals = other.getPointeeType().getQualifiers(); |
2601 | // Address spaces overlap if at least one of them is a superset of another |
2602 | return thisQuals.isAddressSpaceSupersetOf(otherQuals) || |
2603 | otherQuals.isAddressSpaceSupersetOf(thisQuals); |
2604 | } |
2605 | |
2606 | bool isSugared() const { return false; } |
2607 | QualType desugar() const { return QualType(this, 0); } |
2608 | |
2609 | void Profile(llvm::FoldingSetNodeID &ID) { |
2610 | Profile(ID, getPointeeType()); |
2611 | } |
2612 | |
2613 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { |
2614 | ID.AddPointer(Pointee.getAsOpaquePtr()); |
2615 | } |
2616 | |
2617 | static bool classof(const Type *T) { return T->getTypeClass() == Pointer; } |
2618 | }; |
2619 | |
2620 | /// Represents a type which was implicitly adjusted by the semantic |
2621 | /// engine for arbitrary reasons. For example, array and function types can |
2622 | /// decay, and function types can have their calling conventions adjusted. |
2623 | class AdjustedType : public Type, public llvm::FoldingSetNode { |
2624 | QualType OriginalTy; |
2625 | QualType AdjustedTy; |
2626 | |
2627 | protected: |
2628 | friend class ASTContext; // ASTContext creates these. |
2629 | |
2630 | AdjustedType(TypeClass TC, QualType OriginalTy, QualType AdjustedTy, |
2631 | QualType CanonicalPtr) |
2632 | : Type(TC, CanonicalPtr, OriginalTy->isDependentType(), |
2633 | OriginalTy->isInstantiationDependentType(), |
2634 | OriginalTy->isVariablyModifiedType(), |
2635 | OriginalTy->containsUnexpandedParameterPack()), |
2636 | OriginalTy(OriginalTy), AdjustedTy(AdjustedTy) {} |
2637 | |
2638 | public: |
2639 | QualType getOriginalType() const { return OriginalTy; } |
2640 | QualType getAdjustedType() const { return AdjustedTy; } |
2641 | |
2642 | bool isSugared() const { return true; } |
2643 | QualType desugar() const { return AdjustedTy; } |
2644 | |
2645 | void Profile(llvm::FoldingSetNodeID &ID) { |
2646 | Profile(ID, OriginalTy, AdjustedTy); |
2647 | } |
2648 | |
2649 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Orig, QualType New) { |
2650 | ID.AddPointer(Orig.getAsOpaquePtr()); |
2651 | ID.AddPointer(New.getAsOpaquePtr()); |
2652 | } |
2653 | |
2654 | static bool classof(const Type *T) { |
2655 | return T->getTypeClass() == Adjusted || T->getTypeClass() == Decayed; |
2656 | } |
2657 | }; |
2658 | |
2659 | /// Represents a pointer type decayed from an array or function type. |
2660 | class DecayedType : public AdjustedType { |
2661 | friend class ASTContext; // ASTContext creates these. |
2662 | |
2663 | inline |
2664 | DecayedType(QualType OriginalType, QualType Decayed, QualType Canonical); |
2665 | |
2666 | public: |
2667 | QualType getDecayedType() const { return getAdjustedType(); } |
2668 | |
2669 | inline QualType getPointeeType() const; |
2670 | |
2671 | static bool classof(const Type *T) { return T->getTypeClass() == Decayed; } |
2672 | }; |
2673 | |
2674 | /// Pointer to a block type. |
2675 | /// This type is to represent types syntactically represented as |
2676 | /// "void (^)(int)", etc. Pointee is required to always be a function type. |
2677 | class BlockPointerType : public Type, public llvm::FoldingSetNode { |
2678 | friend class ASTContext; // ASTContext creates these. |
2679 | |
2680 | // Block is some kind of pointer type |
2681 | QualType PointeeType; |
2682 | |
2683 | BlockPointerType(QualType Pointee, QualType CanonicalCls) |
2684 | : Type(BlockPointer, CanonicalCls, Pointee->isDependentType(), |
2685 | Pointee->isInstantiationDependentType(), |
2686 | Pointee->isVariablyModifiedType(), |
2687 | Pointee->containsUnexpandedParameterPack()), |
2688 | PointeeType(Pointee) {} |
2689 | |
2690 | public: |
2691 | // Get the pointee type. Pointee is required to always be a function type. |
2692 | QualType getPointeeType() const { return PointeeType; } |
2693 | |
2694 | bool isSugared() const { return false; } |
2695 | QualType desugar() const { return QualType(this, 0); } |
2696 | |
2697 | void Profile(llvm::FoldingSetNodeID &ID) { |
2698 | Profile(ID, getPointeeType()); |
2699 | } |
2700 | |
2701 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) { |
2702 | ID.AddPointer(Pointee.getAsOpaquePtr()); |
2703 | } |
2704 | |
2705 | static bool classof(const Type *T) { |
2706 | return T->getTypeClass() == BlockPointer; |
2707 | } |
2708 | }; |
2709 | |
2710 | /// Base for LValueReferenceType and RValueReferenceType |
2711 | class ReferenceType : public Type, public llvm::FoldingSetNode { |
2712 | QualType PointeeType; |
2713 | |
2714 | protected: |
2715 | ReferenceType(TypeClass tc, QualType Referencee, QualType CanonicalRef, |
2716 | bool SpelledAsLValue) |
2717 | : Type(tc, CanonicalRef, Referencee->isDependentType(), |
2718 | Referencee->isInstantiationDependentType(), |
2719 | Referencee->isVariablyModifiedType(), |
2720 | Referencee->containsUnexpandedParameterPack()), |
2721 | PointeeType(Referencee) { |
2722 | ReferenceTypeBits.SpelledAsLValue = SpelledAsLValue; |
2723 | ReferenceTypeBits.InnerRef = Referencee->isReferenceType(); |
2724 | } |
2725 | |
2726 | public: |
2727 | bool isSpelledAsLValue() const { return ReferenceTypeBits.SpelledAsLValue; } |
2728 | bool isInnerRef() const { return ReferenceTypeBits.InnerRef; } |
2729 | |
2730 | QualType getPointeeTypeAsWritten() const { return PointeeType; } |
2731 | |
2732 | QualType getPointeeType() const { |
2733 | // FIXME: this might strip inner qualifiers; okay? |
2734 | const ReferenceType *T = this; |
2735 | while (T->isInnerRef()) |
2736 | T = T->PointeeType->castAs<ReferenceType>(); |
2737 | return T->PointeeType; |
2738 | } |
2739 | |
2740 | void Profile(llvm::FoldingSetNodeID &ID) { |
2741 | Profile(ID, PointeeType, isSpelledAsLValue()); |
2742 | } |
2743 | |
2744 | static void Profile(llvm::FoldingSetNodeID &ID, |
2745 | QualType Referencee, |
2746 | bool SpelledAsLValue) { |
2747 | ID.AddPointer(Referencee.getAsOpaquePtr()); |
2748 | ID.AddBoolean(SpelledAsLValue); |
2749 | } |
2750 | |
2751 | static bool classof(const Type *T) { |
2752 | return T->getTypeClass() == LValueReference || |
2753 | T->getTypeClass() == RValueReference; |
2754 | } |
2755 | }; |
2756 | |
2757 | /// An lvalue reference type, per C++11 [dcl.ref]. |
2758 | class LValueReferenceType : public ReferenceType { |
2759 | friend class ASTContext; // ASTContext creates these |
2760 | |
2761 | LValueReferenceType(QualType Referencee, QualType CanonicalRef, |
2762 | bool SpelledAsLValue) |
2763 | : ReferenceType(LValueReference, Referencee, CanonicalRef, |
2764 | SpelledAsLValue) {} |
2765 | |
2766 | public: |
2767 | bool isSugared() const { return false; } |
2768 | QualType desugar() const { return QualType(this, 0); } |
2769 | |
2770 | static bool classof(const Type *T) { |
2771 | return T->getTypeClass() == LValueReference; |
2772 | } |
2773 | }; |
2774 | |
2775 | /// An rvalue reference type, per C++11 [dcl.ref]. |
2776 | class RValueReferenceType : public ReferenceType { |
2777 | friend class ASTContext; // ASTContext creates these |
2778 | |
2779 | RValueReferenceType(QualType Referencee, QualType CanonicalRef) |
2780 | : ReferenceType(RValueReference, Referencee, CanonicalRef, false) {} |
2781 | |
2782 | public: |
2783 | bool isSugared() const { return false; } |
2784 | QualType desugar() const { return QualType(this, 0); } |
2785 | |
2786 | static bool classof(const Type *T) { |
2787 | return T->getTypeClass() == RValueReference; |
2788 | } |
2789 | }; |
2790 | |
2791 | /// A pointer to member type per C++ 8.3.3 - Pointers to members. |
2792 | /// |
2793 | /// This includes both pointers to data members and pointer to member functions. |
2794 | class MemberPointerType : public Type, public llvm::FoldingSetNode { |
2795 | friend class ASTContext; // ASTContext creates these. |
2796 | |
2797 | QualType PointeeType; |
2798 | |
2799 | /// The class of which the pointee is a member. Must ultimately be a |
2800 | /// RecordType, but could be a typedef or a template parameter too. |
2801 | const Type *Class; |
2802 | |
2803 | MemberPointerType(QualType Pointee, const Type *Cls, QualType CanonicalPtr) |
2804 | : Type(MemberPointer, CanonicalPtr, |
2805 | Cls->isDependentType() || Pointee->isDependentType(), |
2806 | (Cls->isInstantiationDependentType() || |
2807 | Pointee->isInstantiationDependentType()), |
2808 | Pointee->isVariablyModifiedType(), |
2809 | (Cls->containsUnexpandedParameterPack() || |
2810 | Pointee->containsUnexpandedParameterPack())), |
2811 | PointeeType(Pointee), Class(Cls) {} |
2812 | |
2813 | public: |
2814 | QualType getPointeeType() const { return PointeeType; } |
2815 | |
2816 | /// Returns true if the member type (i.e. the pointee type) is a |
2817 | /// function type rather than a data-member type. |
2818 | bool isMemberFunctionPointer() const { |
2819 | return PointeeType->isFunctionProtoType(); |
2820 | } |
2821 | |
2822 | /// Returns true if the member type (i.e. the pointee type) is a |
2823 | /// data type rather than a function type. |
2824 | bool isMemberDataPointer() const { |
2825 | return !PointeeType->isFunctionProtoType(); |
2826 | } |
2827 | |
2828 | const Type *getClass() const { return Class; } |
2829 | CXXRecordDecl *getMostRecentCXXRecordDecl() const; |
2830 | |
2831 | bool isSugared() const { return false; } |
2832 | QualType desugar() const { return QualType(this, 0); } |
2833 | |
2834 | void Profile(llvm::FoldingSetNodeID &ID) { |
2835 | Profile(ID, getPointeeType(), getClass()); |
2836 | } |
2837 | |
2838 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee, |
2839 | const Type *Class) { |
2840 | ID.AddPointer(Pointee.getAsOpaquePtr()); |
2841 | ID.AddPointer(Class); |
2842 | } |
2843 | |
2844 | static bool classof(const Type *T) { |
2845 | return T->getTypeClass() == MemberPointer; |
2846 | } |
2847 | }; |
2848 | |
2849 | /// Represents an array type, per C99 6.7.5.2 - Array Declarators. |
2850 | class ArrayType : public Type, public llvm::FoldingSetNode { |
2851 | public: |
2852 | /// Capture whether this is a normal array (e.g. int X[4]) |
2853 | /// an array with a static size (e.g. int X[static 4]), or an array |
2854 | /// with a star size (e.g. int X[*]). |
2855 | /// 'static' is only allowed on function parameters. |
2856 | enum ArraySizeModifier { |
2857 | Normal, Static, Star |
2858 | }; |
2859 | |
2860 | private: |
2861 | /// The element type of the array. |
2862 | QualType ElementType; |
2863 | |
2864 | protected: |
2865 | friend class ASTContext; // ASTContext creates these. |
2866 | |
2867 | // C++ [temp.dep.type]p1: |
2868 | // A type is dependent if it is... |
2869 | // - an array type constructed from any dependent type or whose |
2870 | // size is specified by a constant expression that is |
2871 | // value-dependent, |
2872 | ArrayType(TypeClass tc, QualType et, QualType can, |
2873 | ArraySizeModifier sm, unsigned tq, |
2874 | bool ContainsUnexpandedParameterPack) |
2875 | : Type(tc, can, et->isDependentType() || tc == DependentSizedArray, |
2876 | et->isInstantiationDependentType() || tc == DependentSizedArray, |
2877 | (tc == VariableArray || et->isVariablyModifiedType()), |
2878 | ContainsUnexpandedParameterPack), |
2879 | ElementType(et) { |
2880 | ArrayTypeBits.IndexTypeQuals = tq; |
2881 | ArrayTypeBits.SizeModifier = sm; |
2882 | } |
2883 | |
2884 | public: |
2885 | QualType getElementType() const { return ElementType; } |
2886 | |
2887 | ArraySizeModifier getSizeModifier() const { |
2888 | return ArraySizeModifier(ArrayTypeBits.SizeModifier); |
2889 | } |
2890 | |
2891 | Qualifiers getIndexTypeQualifiers() const { |
2892 | return Qualifiers::fromCVRMask(getIndexTypeCVRQualifiers()); |
2893 | } |
2894 | |
2895 | unsigned getIndexTypeCVRQualifiers() const { |
2896 | return ArrayTypeBits.IndexTypeQuals; |
2897 | } |
2898 | |
2899 | static bool classof(const Type *T) { |
2900 | return T->getTypeClass() == ConstantArray || |
2901 | T->getTypeClass() == VariableArray || |
2902 | T->getTypeClass() == IncompleteArray || |
2903 | T->getTypeClass() == DependentSizedArray; |
2904 | } |
2905 | }; |
2906 | |
2907 | /// Represents the canonical version of C arrays with a specified constant size. |
2908 | /// For example, the canonical type for 'int A[4 + 4*100]' is a |
2909 | /// ConstantArrayType where the element type is 'int' and the size is 404. |
2910 | class ConstantArrayType : public ArrayType { |
2911 | llvm::APInt Size; // Allows us to unique the type. |
2912 | |
2913 | ConstantArrayType(QualType et, QualType can, const llvm::APInt &size, |
2914 | ArraySizeModifier sm, unsigned tq) |
2915 | : ArrayType(ConstantArray, et, can, sm, tq, |
2916 | et->containsUnexpandedParameterPack()), |
2917 | Size(size) {} |
2918 | |
2919 | protected: |
2920 | friend class ASTContext; // ASTContext creates these. |
2921 | |
2922 | ConstantArrayType(TypeClass tc, QualType et, QualType can, |
2923 | const llvm::APInt &size, ArraySizeModifier sm, unsigned tq) |
2924 | : ArrayType(tc, et, can, sm, tq, et->containsUnexpandedParameterPack()), |
2925 | Size(size) {} |
2926 | |
2927 | public: |
2928 | const llvm::APInt &getSize() const { return Size; } |
2929 | bool isSugared() const { return false; } |
2930 | QualType desugar() const { return QualType(this, 0); } |
2931 | |
2932 | /// Determine the number of bits required to address a member of |
2933 | // an array with the given element type and number of elements. |
2934 | static unsigned getNumAddressingBits(const ASTContext &Context, |
2935 | QualType ElementType, |
2936 | const llvm::APInt &NumElements); |
2937 | |
2938 | /// Determine the maximum number of active bits that an array's size |
2939 | /// can require, which limits the maximum size of the array. |
2940 | static unsigned getMaxSizeBits(const ASTContext &Context); |
2941 | |
2942 | void Profile(llvm::FoldingSetNodeID &ID) { |
2943 | Profile(ID, getElementType(), getSize(), |
2944 | getSizeModifier(), getIndexTypeCVRQualifiers()); |
2945 | } |
2946 | |
2947 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, |
2948 | const llvm::APInt &ArraySize, ArraySizeModifier SizeMod, |
2949 | unsigned TypeQuals) { |
2950 | ID.AddPointer(ET.getAsOpaquePtr()); |
2951 | ID.AddInteger(ArraySize.getZExtValue()); |
2952 | ID.AddInteger(SizeMod); |
2953 | ID.AddInteger(TypeQuals); |
2954 | } |
2955 | |
2956 | static bool classof(const Type *T) { |
2957 | return T->getTypeClass() == ConstantArray; |
2958 | } |
2959 | }; |
2960 | |
2961 | /// Represents a C array with an unspecified size. For example 'int A[]' has |
2962 | /// an IncompleteArrayType where the element type is 'int' and the size is |
2963 | /// unspecified. |
2964 | class IncompleteArrayType : public ArrayType { |
2965 | friend class ASTContext; // ASTContext creates these. |
2966 | |
2967 | IncompleteArrayType(QualType et, QualType can, |
2968 | ArraySizeModifier sm, unsigned tq) |
2969 | : ArrayType(IncompleteArray, et, can, sm, tq, |
2970 | et->containsUnexpandedParameterPack()) {} |
2971 | |
2972 | public: |
2973 | friend class StmtIteratorBase; |
2974 | |
2975 | bool isSugared() const { return false; } |
2976 | QualType desugar() const { return QualType(this, 0); } |
2977 | |
2978 | static bool classof(const Type *T) { |
2979 | return T->getTypeClass() == IncompleteArray; |
2980 | } |
2981 | |
2982 | void Profile(llvm::FoldingSetNodeID &ID) { |
2983 | Profile(ID, getElementType(), getSizeModifier(), |
2984 | getIndexTypeCVRQualifiers()); |
2985 | } |
2986 | |
2987 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ET, |
2988 | ArraySizeModifier SizeMod, unsigned TypeQuals) { |
2989 | ID.AddPointer(ET.getAsOpaquePtr()); |
2990 | ID.AddInteger(SizeMod); |
2991 | ID.AddInteger(TypeQuals); |
2992 | } |
2993 | }; |
2994 | |
2995 | /// Represents a C array with a specified size that is not an |
2996 | /// integer-constant-expression. For example, 'int s[x+foo()]'. |
2997 | /// Since the size expression is an arbitrary expression, we store it as such. |
2998 | /// |
2999 | /// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and |
3000 | /// should not be: two lexically equivalent variable array types could mean |
3001 | /// different things, for example, these variables do not have the same type |
3002 | /// dynamically: |
3003 | /// |
3004 | /// void foo(int x) { |
3005 | /// int Y[x]; |
3006 | /// ++x; |
3007 | /// int Z[x]; |
3008 | /// } |
3009 | class VariableArrayType : public ArrayType { |
3010 | friend class ASTContext; // ASTContext creates these. |
3011 | |
3012 | /// An assignment-expression. VLA's are only permitted within |
3013 | /// a function block. |
3014 | Stmt *SizeExpr; |
3015 | |
3016 | /// The range spanned by the left and right array brackets. |
3017 | SourceRange Brackets; |
3018 | |
3019 | VariableArrayType(QualType et, QualType can, Expr *e, |
3020 | ArraySizeModifier sm, unsigned tq, |
3021 | SourceRange brackets) |
3022 | : ArrayType(VariableArray, et, can, sm, tq, |
3023 | et->containsUnexpandedParameterPack()), |
3024 | SizeExpr((Stmt*) e), Brackets(brackets) {} |
3025 | |
3026 | public: |
3027 | friend class StmtIteratorBase; |
3028 | |
3029 | Expr *getSizeExpr() const { |
3030 | // We use C-style casts instead of cast<> here because we do not wish |
3031 | // to have a dependency of Type.h on Stmt.h/Expr.h. |
3032 | return (Expr*) SizeExpr; |
3033 | } |
3034 | |
3035 | SourceRange getBracketsRange() const { return Brackets; } |
3036 | SourceLocation getLBracketLoc() const { return Brackets.getBegin(); } |
3037 | SourceLocation getRBracketLoc() const { return Brackets.getEnd(); } |
3038 | |
3039 | bool isSugared() const { return false; } |
3040 | QualType desugar() const { return QualType(this, 0); } |
3041 | |
3042 | static bool classof(const Type *T) { |
3043 | return T->getTypeClass() == VariableArray; |
3044 | } |
3045 | |
3046 | void Profile(llvm::FoldingSetNodeID &ID) { |
3047 | llvm_unreachable("Cannot unique VariableArrayTypes.")::llvm::llvm_unreachable_internal("Cannot unique VariableArrayTypes." , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 3047); |
3048 | } |
3049 | }; |
3050 | |
3051 | /// Represents an array type in C++ whose size is a value-dependent expression. |
3052 | /// |
3053 | /// For example: |
3054 | /// \code |
3055 | /// template<typename T, int Size> |
3056 | /// class array { |
3057 | /// T data[Size]; |
3058 | /// }; |
3059 | /// \endcode |
3060 | /// |
3061 | /// For these types, we won't actually know what the array bound is |
3062 | /// until template instantiation occurs, at which point this will |
3063 | /// become either a ConstantArrayType or a VariableArrayType. |
3064 | class DependentSizedArrayType : public ArrayType { |
3065 | friend class ASTContext; // ASTContext creates these. |
3066 | |
3067 | const ASTContext &Context; |
3068 | |
3069 | /// An assignment expression that will instantiate to the |
3070 | /// size of the array. |
3071 | /// |
3072 | /// The expression itself might be null, in which case the array |
3073 | /// type will have its size deduced from an initializer. |
3074 | Stmt *SizeExpr; |
3075 | |
3076 | /// The range spanned by the left and right array brackets. |
3077 | SourceRange Brackets; |
3078 | |
3079 | DependentSizedArrayType(const ASTContext &Context, QualType et, QualType can, |
3080 | Expr *e, ArraySizeModifier sm, unsigned tq, |
3081 | SourceRange brackets); |
3082 | |
3083 | public: |
3084 | friend class StmtIteratorBase; |
3085 | |
3086 | Expr *getSizeExpr() const { |
3087 | // We use C-style casts instead of cast<> here because we do not wish |
3088 | // to have a dependency of Type.h on Stmt.h/Expr.h. |
3089 | return (Expr*) SizeExpr; |
3090 | } |
3091 | |
3092 | SourceRange getBracketsRange() const { return Brackets; } |
3093 | SourceLocation getLBracketLoc() const { return Brackets.getBegin(); } |
3094 | SourceLocation getRBracketLoc() const { return Brackets.getEnd(); } |
3095 | |
3096 | bool isSugared() const { return false; } |
3097 | QualType desugar() const { return QualType(this, 0); } |
3098 | |
3099 | static bool classof(const Type *T) { |
3100 | return T->getTypeClass() == DependentSizedArray; |
3101 | } |
3102 | |
3103 | void Profile(llvm::FoldingSetNodeID &ID) { |
3104 | Profile(ID, Context, getElementType(), |
3105 | getSizeModifier(), getIndexTypeCVRQualifiers(), getSizeExpr()); |
3106 | } |
3107 | |
3108 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, |
3109 | QualType ET, ArraySizeModifier SizeMod, |
3110 | unsigned TypeQuals, Expr *E); |
3111 | }; |
3112 | |
3113 | /// Represents an extended address space qualifier where the input address space |
3114 | /// value is dependent. Non-dependent address spaces are not represented with a |
3115 | /// special Type subclass; they are stored on an ExtQuals node as part of a QualType. |
3116 | /// |
3117 | /// For example: |
3118 | /// \code |
3119 | /// template<typename T, int AddrSpace> |
3120 | /// class AddressSpace { |
3121 | /// typedef T __attribute__((address_space(AddrSpace))) type; |
3122 | /// } |
3123 | /// \endcode |
3124 | class DependentAddressSpaceType : public Type, public llvm::FoldingSetNode { |
3125 | friend class ASTContext; |
3126 | |
3127 | const ASTContext &Context; |
3128 | Expr *AddrSpaceExpr; |
3129 | QualType PointeeType; |
3130 | SourceLocation loc; |
3131 | |
3132 | DependentAddressSpaceType(const ASTContext &Context, QualType PointeeType, |
3133 | QualType can, Expr *AddrSpaceExpr, |
3134 | SourceLocation loc); |
3135 | |
3136 | public: |
3137 | Expr *getAddrSpaceExpr() const { return AddrSpaceExpr; } |
3138 | QualType getPointeeType() const { return PointeeType; } |
3139 | SourceLocation getAttributeLoc() const { return loc; } |
3140 | |
3141 | bool isSugared() const { return false; } |
3142 | QualType desugar() const { return QualType(this, 0); } |
3143 | |
3144 | static bool classof(const Type *T) { |
3145 | return T->getTypeClass() == DependentAddressSpace; |
3146 | } |
3147 | |
3148 | void Profile(llvm::FoldingSetNodeID &ID) { |
3149 | Profile(ID, Context, getPointeeType(), getAddrSpaceExpr()); |
3150 | } |
3151 | |
3152 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, |
3153 | QualType PointeeType, Expr *AddrSpaceExpr); |
3154 | }; |
3155 | |
3156 | /// Represents an extended vector type where either the type or size is |
3157 | /// dependent. |
3158 | /// |
3159 | /// For example: |
3160 | /// \code |
3161 | /// template<typename T, int Size> |
3162 | /// class vector { |
3163 | /// typedef T __attribute__((ext_vector_type(Size))) type; |
3164 | /// } |
3165 | /// \endcode |
3166 | class DependentSizedExtVectorType : public Type, public llvm::FoldingSetNode { |
3167 | friend class ASTContext; |
3168 | |
3169 | const ASTContext &Context; |
3170 | Expr *SizeExpr; |
3171 | |
3172 | /// The element type of the array. |
3173 | QualType ElementType; |
3174 | |
3175 | SourceLocation loc; |
3176 | |
3177 | DependentSizedExtVectorType(const ASTContext &Context, QualType ElementType, |
3178 | QualType can, Expr *SizeExpr, SourceLocation loc); |
3179 | |
3180 | public: |
3181 | Expr *getSizeExpr() const { return SizeExpr; } |
3182 | QualType getElementType() const { return ElementType; } |
3183 | SourceLocation getAttributeLoc() const { return loc; } |
3184 | |
3185 | bool isSugared() const { return false; } |
3186 | QualType desugar() const { return QualType(this, 0); } |
3187 | |
3188 | static bool classof(const Type *T) { |
3189 | return T->getTypeClass() == DependentSizedExtVector; |
3190 | } |
3191 | |
3192 | void Profile(llvm::FoldingSetNodeID &ID) { |
3193 | Profile(ID, Context, getElementType(), getSizeExpr()); |
3194 | } |
3195 | |
3196 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, |
3197 | QualType ElementType, Expr *SizeExpr); |
3198 | }; |
3199 | |
3200 | |
3201 | /// Represents a GCC generic vector type. This type is created using |
3202 | /// __attribute__((vector_size(n)), where "n" specifies the vector size in |
3203 | /// bytes; or from an Altivec __vector or vector declaration. |
3204 | /// Since the constructor takes the number of vector elements, the |
3205 | /// client is responsible for converting the size into the number of elements. |
3206 | class VectorType : public Type, public llvm::FoldingSetNode { |
3207 | public: |
3208 | enum VectorKind { |
3209 | /// not a target-specific vector type |
3210 | GenericVector, |
3211 | |
3212 | /// is AltiVec vector |
3213 | AltiVecVector, |
3214 | |
3215 | /// is AltiVec 'vector Pixel' |
3216 | AltiVecPixel, |
3217 | |
3218 | /// is AltiVec 'vector bool ...' |
3219 | AltiVecBool, |
3220 | |
3221 | /// is ARM Neon vector |
3222 | NeonVector, |
3223 | |
3224 | /// is ARM Neon polynomial vector |
3225 | NeonPolyVector |
3226 | }; |
3227 | |
3228 | protected: |
3229 | friend class ASTContext; // ASTContext creates these. |
3230 | |
3231 | /// The element type of the vector. |
3232 | QualType ElementType; |
3233 | |
3234 | VectorType(QualType vecType, unsigned nElements, QualType canonType, |
3235 | VectorKind vecKind); |
3236 | |
3237 | VectorType(TypeClass tc, QualType vecType, unsigned nElements, |
3238 | QualType canonType, VectorKind vecKind); |
3239 | |
3240 | public: |
3241 | QualType getElementType() const { return ElementType; } |
3242 | unsigned getNumElements() const { return VectorTypeBits.NumElements; } |
3243 | |
3244 | static bool isVectorSizeTooLarge(unsigned NumElements) { |
3245 | return NumElements > VectorTypeBitfields::MaxNumElements; |
3246 | } |
3247 | |
3248 | bool isSugared() const { return false; } |
3249 | QualType desugar() const { return QualType(this, 0); } |
3250 | |
3251 | VectorKind getVectorKind() const { |
3252 | return VectorKind(VectorTypeBits.VecKind); |
3253 | } |
3254 | |
3255 | void Profile(llvm::FoldingSetNodeID &ID) { |
3256 | Profile(ID, getElementType(), getNumElements(), |
3257 | getTypeClass(), getVectorKind()); |
3258 | } |
3259 | |
3260 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType, |
3261 | unsigned NumElements, TypeClass TypeClass, |
3262 | VectorKind VecKind) { |
3263 | ID.AddPointer(ElementType.getAsOpaquePtr()); |
3264 | ID.AddInteger(NumElements); |
3265 | ID.AddInteger(TypeClass); |
3266 | ID.AddInteger(VecKind); |
3267 | } |
3268 | |
3269 | static bool classof(const Type *T) { |
3270 | return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector; |
3271 | } |
3272 | }; |
3273 | |
3274 | /// Represents a vector type where either the type or size is dependent. |
3275 | //// |
3276 | /// For example: |
3277 | /// \code |
3278 | /// template<typename T, int Size> |
3279 | /// class vector { |
3280 | /// typedef T __attribute__((vector_size(Size))) type; |
3281 | /// } |
3282 | /// \endcode |
3283 | class DependentVectorType : public Type, public llvm::FoldingSetNode { |
3284 | friend class ASTContext; |
3285 | |
3286 | const ASTContext &Context; |
3287 | QualType ElementType; |
3288 | Expr *SizeExpr; |
3289 | SourceLocation Loc; |
3290 | |
3291 | DependentVectorType(const ASTContext &Context, QualType ElementType, |
3292 | QualType CanonType, Expr *SizeExpr, |
3293 | SourceLocation Loc, VectorType::VectorKind vecKind); |
3294 | |
3295 | public: |
3296 | Expr *getSizeExpr() const { return SizeExpr; } |
3297 | QualType getElementType() const { return ElementType; } |
3298 | SourceLocation getAttributeLoc() const { return Loc; } |
3299 | VectorType::VectorKind getVectorKind() const { |
3300 | return VectorType::VectorKind(VectorTypeBits.VecKind); |
3301 | } |
3302 | |
3303 | bool isSugared() const { return false; } |
3304 | QualType desugar() const { return QualType(this, 0); } |
3305 | |
3306 | static bool classof(const Type *T) { |
3307 | return T->getTypeClass() == DependentVector; |
3308 | } |
3309 | |
3310 | void Profile(llvm::FoldingSetNodeID &ID) { |
3311 | Profile(ID, Context, getElementType(), getSizeExpr(), getVectorKind()); |
3312 | } |
3313 | |
3314 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, |
3315 | QualType ElementType, const Expr *SizeExpr, |
3316 | VectorType::VectorKind VecKind); |
3317 | }; |
3318 | |
3319 | /// ExtVectorType - Extended vector type. This type is created using |
3320 | /// __attribute__((ext_vector_type(n)), where "n" is the number of elements. |
3321 | /// Unlike vector_size, ext_vector_type is only allowed on typedef's. This |
3322 | /// class enables syntactic extensions, like Vector Components for accessing |
3323 | /// points (as .xyzw), colors (as .rgba), and textures (modeled after OpenGL |
3324 | /// Shading Language). |
3325 | class ExtVectorType : public VectorType { |
3326 | friend class ASTContext; // ASTContext creates these. |
3327 | |
3328 | ExtVectorType(QualType vecType, unsigned nElements, QualType canonType) |
3329 | : VectorType(ExtVector, vecType, nElements, canonType, GenericVector) {} |
3330 | |
3331 | public: |
3332 | static int getPointAccessorIdx(char c) { |
3333 | switch (c) { |
3334 | default: return -1; |
3335 | case 'x': case 'r': return 0; |
3336 | case 'y': case 'g': return 1; |
3337 | case 'z': case 'b': return 2; |
3338 | case 'w': case 'a': return 3; |
3339 | } |
3340 | } |
3341 | |
3342 | static int getNumericAccessorIdx(char c) { |
3343 | switch (c) { |
3344 | default: return -1; |
3345 | case '0': return 0; |
3346 | case '1': return 1; |
3347 | case '2': return 2; |
3348 | case '3': return 3; |
3349 | case '4': return 4; |
3350 | case '5': return 5; |
3351 | case '6': return 6; |
3352 | case '7': return 7; |
3353 | case '8': return 8; |
3354 | case '9': return 9; |
3355 | case 'A': |
3356 | case 'a': return 10; |
3357 | case 'B': |
3358 | case 'b': return 11; |
3359 | case 'C': |
3360 | case 'c': return 12; |
3361 | case 'D': |
3362 | case 'd': return 13; |
3363 | case 'E': |
3364 | case 'e': return 14; |
3365 | case 'F': |
3366 | case 'f': return 15; |
3367 | } |
3368 | } |
3369 | |
3370 | static int getAccessorIdx(char c, bool isNumericAccessor) { |
3371 | if (isNumericAccessor) |
3372 | return getNumericAccessorIdx(c); |
3373 | else |
3374 | return getPointAccessorIdx(c); |
3375 | } |
3376 | |
3377 | bool isAccessorWithinNumElements(char c, bool isNumericAccessor) const { |
3378 | if (int idx = getAccessorIdx(c, isNumericAccessor)+1) |
3379 | return unsigned(idx-1) < getNumElements(); |
3380 | return false; |
3381 | } |
3382 | |
3383 | bool isSugared() const { return false; } |
3384 | QualType desugar() const { return QualType(this, 0); } |
3385 | |
3386 | static bool classof(const Type *T) { |
3387 | return T->getTypeClass() == ExtVector; |
3388 | } |
3389 | }; |
3390 | |
3391 | /// FunctionType - C99 6.7.5.3 - Function Declarators. This is the common base |
3392 | /// class of FunctionNoProtoType and FunctionProtoType. |
3393 | class FunctionType : public Type { |
3394 | // The type returned by the function. |
3395 | QualType ResultType; |
3396 | |
3397 | public: |
3398 | /// Interesting information about a specific parameter that can't simply |
3399 | /// be reflected in parameter's type. This is only used by FunctionProtoType |
3400 | /// but is in FunctionType to make this class available during the |
3401 | /// specification of the bases of FunctionProtoType. |
3402 | /// |
3403 | /// It makes sense to model language features this way when there's some |
3404 | /// sort of parameter-specific override (such as an attribute) that |
3405 | /// affects how the function is called. For example, the ARC ns_consumed |
3406 | /// attribute changes whether a parameter is passed at +0 (the default) |
3407 | /// or +1 (ns_consumed). This must be reflected in the function type, |
3408 | /// but isn't really a change to the parameter type. |
3409 | /// |
3410 | /// One serious disadvantage of modelling language features this way is |
3411 | /// that they generally do not work with language features that attempt |
3412 | /// to destructure types. For example, template argument deduction will |
3413 | /// not be able to match a parameter declared as |
3414 | /// T (*)(U) |
3415 | /// against an argument of type |
3416 | /// void (*)(__attribute__((ns_consumed)) id) |
3417 | /// because the substitution of T=void, U=id into the former will |
3418 | /// not produce the latter. |
3419 | class ExtParameterInfo { |
3420 | enum { |
3421 | ABIMask = 0x0F, |
3422 | IsConsumed = 0x10, |
3423 | HasPassObjSize = 0x20, |
3424 | IsNoEscape = 0x40, |
3425 | }; |
3426 | unsigned char Data = 0; |
3427 | |
3428 | public: |
3429 | ExtParameterInfo() = default; |
3430 | |
3431 | /// Return the ABI treatment of this parameter. |
3432 | ParameterABI getABI() const { return ParameterABI(Data & ABIMask); } |
3433 | ExtParameterInfo withABI(ParameterABI kind) const { |
3434 | ExtParameterInfo copy = *this; |
3435 | copy.Data = (copy.Data & ~ABIMask) | unsigned(kind); |
3436 | return copy; |
3437 | } |
3438 | |
3439 | /// Is this parameter considered "consumed" by Objective-C ARC? |
3440 | /// Consumed parameters must have retainable object type. |
3441 | bool isConsumed() const { return (Data & IsConsumed); } |
3442 | ExtParameterInfo withIsConsumed(bool consumed) const { |
3443 | ExtParameterInfo copy = *this; |
3444 | if (consumed) |
3445 | copy.Data |= IsConsumed; |
3446 | else |
3447 | copy.Data &= ~IsConsumed; |
3448 | return copy; |
3449 | } |
3450 | |
3451 | bool hasPassObjectSize() const { return Data & HasPassObjSize; } |
3452 | ExtParameterInfo withHasPassObjectSize() const { |
3453 | ExtParameterInfo Copy = *this; |
3454 | Copy.Data |= HasPassObjSize; |
3455 | return Copy; |
3456 | } |
3457 | |
3458 | bool isNoEscape() const { return Data & IsNoEscape; } |
3459 | ExtParameterInfo withIsNoEscape(bool NoEscape) const { |
3460 | ExtParameterInfo Copy = *this; |
3461 | if (NoEscape) |
3462 | Copy.Data |= IsNoEscape; |
3463 | else |
3464 | Copy.Data &= ~IsNoEscape; |
3465 | return Copy; |
3466 | } |
3467 | |
3468 | unsigned char getOpaqueValue() const { return Data; } |
3469 | static ExtParameterInfo getFromOpaqueValue(unsigned char data) { |
3470 | ExtParameterInfo result; |
3471 | result.Data = data; |
3472 | return result; |
3473 | } |
3474 | |
3475 | friend bool operator==(ExtParameterInfo lhs, ExtParameterInfo rhs) { |
3476 | return lhs.Data == rhs.Data; |
3477 | } |
3478 | |
3479 | friend bool operator!=(ExtParameterInfo lhs, ExtParameterInfo rhs) { |
3480 | return lhs.Data != rhs.Data; |
3481 | } |
3482 | }; |
3483 | |
3484 | /// A class which abstracts out some details necessary for |
3485 | /// making a call. |
3486 | /// |
3487 | /// It is not actually used directly for storing this information in |
3488 | /// a FunctionType, although FunctionType does currently use the |
3489 | /// same bit-pattern. |
3490 | /// |
3491 | // If you add a field (say Foo), other than the obvious places (both, |
3492 | // constructors, compile failures), what you need to update is |
3493 | // * Operator== |
3494 | // * getFoo |
3495 | // * withFoo |
3496 | // * functionType. Add Foo, getFoo. |
3497 | // * ASTContext::getFooType |
3498 | // * ASTContext::mergeFunctionTypes |
3499 | // * FunctionNoProtoType::Profile |
3500 | // * FunctionProtoType::Profile |
3501 | // * TypePrinter::PrintFunctionProto |
3502 | // * AST read and write |
3503 | // * Codegen |
3504 | class ExtInfo { |
3505 | friend class FunctionType; |
3506 | |
3507 | // Feel free to rearrange or add bits, but if you go over 12, |
3508 | // you'll need to adjust both the Bits field below and |
3509 | // Type::FunctionTypeBitfields. |
3510 | |
3511 | // | CC |noreturn|produces|nocallersavedregs|regparm|nocfcheck| |
3512 | // |0 .. 4| 5 | 6 | 7 |8 .. 10| 11 | |
3513 | // |
3514 | // regparm is either 0 (no regparm attribute) or the regparm value+1. |
3515 | enum { CallConvMask = 0x1F }; |
3516 | enum { NoReturnMask = 0x20 }; |
3517 | enum { ProducesResultMask = 0x40 }; |
3518 | enum { NoCallerSavedRegsMask = 0x80 }; |
3519 | enum { NoCfCheckMask = 0x800 }; |
3520 | enum { |
3521 | RegParmMask = ~(CallConvMask | NoReturnMask | ProducesResultMask | |
3522 | NoCallerSavedRegsMask | NoCfCheckMask), |
3523 | RegParmOffset = 8 |
3524 | }; // Assumed to be the last field |
3525 | uint16_t Bits = CC_C; |
3526 | |
3527 | ExtInfo(unsigned Bits) : Bits(static_cast<uint16_t>(Bits)) {} |
3528 | |
3529 | public: |
3530 | // Constructor with no defaults. Use this when you know that you |
3531 | // have all the elements (when reading an AST file for example). |
3532 | ExtInfo(bool noReturn, bool hasRegParm, unsigned regParm, CallingConv cc, |
3533 | bool producesResult, bool noCallerSavedRegs, bool NoCfCheck) { |
3534 | assert((!hasRegParm || regParm < 7) && "Invalid regparm value")(((!hasRegParm || regParm < 7) && "Invalid regparm value" ) ? static_cast<void> (0) : __assert_fail ("(!hasRegParm || regParm < 7) && \"Invalid regparm value\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 3534, __PRETTY_FUNCTION__)); |
3535 | Bits = ((unsigned)cc) | (noReturn ? NoReturnMask : 0) | |
3536 | (producesResult ? ProducesResultMask : 0) | |
3537 | (noCallerSavedRegs ? NoCallerSavedRegsMask : 0) | |
3538 | (hasRegParm ? ((regParm + 1) << RegParmOffset) : 0) | |
3539 | (NoCfCheck ? NoCfCheckMask : 0); |
3540 | } |
3541 | |
3542 | // Constructor with all defaults. Use when for example creating a |
3543 | // function known to use defaults. |
3544 | ExtInfo() = default; |
3545 | |
3546 | // Constructor with just the calling convention, which is an important part |
3547 | // of the canonical type. |
3548 | ExtInfo(CallingConv CC) : Bits(CC) {} |
3549 | |
3550 | bool getNoReturn() const { return Bits & NoReturnMask; } |
3551 | bool getProducesResult() const { return Bits & ProducesResultMask; } |
3552 | bool getNoCallerSavedRegs() const { return Bits & NoCallerSavedRegsMask; } |
3553 | bool getNoCfCheck() const { return Bits & NoCfCheckMask; } |
3554 | bool getHasRegParm() const { return (Bits >> RegParmOffset) != 0; } |
3555 | |
3556 | unsigned getRegParm() const { |
3557 | unsigned RegParm = (Bits & RegParmMask) >> RegParmOffset; |
3558 | if (RegParm > 0) |
3559 | --RegParm; |
3560 | return RegParm; |
3561 | } |
3562 | |
3563 | CallingConv getCC() const { return CallingConv(Bits & CallConvMask); } |
3564 | |
3565 | bool operator==(ExtInfo Other) const { |
3566 | return Bits == Other.Bits; |
3567 | } |
3568 | bool operator!=(ExtInfo Other) const { |
3569 | return Bits != Other.Bits; |
3570 | } |
3571 | |
3572 | // Note that we don't have setters. That is by design, use |
3573 | // the following with methods instead of mutating these objects. |
3574 | |
3575 | ExtInfo withNoReturn(bool noReturn) const { |
3576 | if (noReturn) |
3577 | return ExtInfo(Bits | NoReturnMask); |
3578 | else |
3579 | return ExtInfo(Bits & ~NoReturnMask); |
3580 | } |
3581 | |
3582 | ExtInfo withProducesResult(bool producesResult) const { |
3583 | if (producesResult) |
3584 | return ExtInfo(Bits | ProducesResultMask); |
3585 | else |
3586 | return ExtInfo(Bits & ~ProducesResultMask); |
3587 | } |
3588 | |
3589 | ExtInfo withNoCallerSavedRegs(bool noCallerSavedRegs) const { |
3590 | if (noCallerSavedRegs) |
3591 | return ExtInfo(Bits | NoCallerSavedRegsMask); |
3592 | else |
3593 | return ExtInfo(Bits & ~NoCallerSavedRegsMask); |
3594 | } |
3595 | |
3596 | ExtInfo withNoCfCheck(bool noCfCheck) const { |
3597 | if (noCfCheck) |
3598 | return ExtInfo(Bits | NoCfCheckMask); |
3599 | else |
3600 | return ExtInfo(Bits & ~NoCfCheckMask); |
3601 | } |
3602 | |
3603 | ExtInfo withRegParm(unsigned RegParm) const { |
3604 | assert(RegParm < 7 && "Invalid regparm value")((RegParm < 7 && "Invalid regparm value") ? static_cast <void> (0) : __assert_fail ("RegParm < 7 && \"Invalid regparm value\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 3604, __PRETTY_FUNCTION__)); |
3605 | return ExtInfo((Bits & ~RegParmMask) | |
3606 | ((RegParm + 1) << RegParmOffset)); |
3607 | } |
3608 | |
3609 | ExtInfo withCallingConv(CallingConv cc) const { |
3610 | return ExtInfo((Bits & ~CallConvMask) | (unsigned) cc); |
3611 | } |
3612 | |
3613 | void Profile(llvm::FoldingSetNodeID &ID) const { |
3614 | ID.AddInteger(Bits); |
3615 | } |
3616 | }; |
3617 | |
3618 | /// A simple holder for a QualType representing a type in an |
3619 | /// exception specification. Unfortunately needed by FunctionProtoType |
3620 | /// because TrailingObjects cannot handle repeated types. |
3621 | struct ExceptionType { QualType Type; }; |
3622 | |
3623 | /// A simple holder for various uncommon bits which do not fit in |
3624 | /// FunctionTypeBitfields. Aligned to alignof(void *) to maintain the |
3625 | /// alignment of subsequent objects in TrailingObjects. You must update |
3626 | /// hasExtraBitfields in FunctionProtoType after adding extra data here. |
3627 | struct alignas(void *) FunctionTypeExtraBitfields { |
3628 | /// The number of types in the exception specification. |
3629 | /// A whole unsigned is not needed here and according to |
3630 | /// [implimits] 8 bits would be enough here. |
3631 | unsigned NumExceptionType; |
3632 | }; |
3633 | |
3634 | protected: |
3635 | FunctionType(TypeClass tc, QualType res, |
3636 | QualType Canonical, bool Dependent, |
3637 | bool InstantiationDependent, |
3638 | bool VariablyModified, bool ContainsUnexpandedParameterPack, |
3639 | ExtInfo Info) |
3640 | : Type(tc, Canonical, Dependent, InstantiationDependent, VariablyModified, |
3641 | ContainsUnexpandedParameterPack), |
3642 | ResultType(res) { |
3643 | FunctionTypeBits.ExtInfo = Info.Bits; |
3644 | } |
3645 | |
3646 | Qualifiers getFastTypeQuals() const { |
3647 | return Qualifiers::fromFastMask(FunctionTypeBits.FastTypeQuals); |
3648 | } |
3649 | |
3650 | public: |
3651 | QualType getReturnType() const { return ResultType; } |
3652 | |
3653 | bool getHasRegParm() const { return getExtInfo().getHasRegParm(); } |
3654 | unsigned getRegParmType() const { return getExtInfo().getRegParm(); } |
3655 | |
3656 | /// Determine whether this function type includes the GNU noreturn |
3657 | /// attribute. The C++11 [[noreturn]] attribute does not affect the function |
3658 | /// type. |
3659 | bool getNoReturnAttr() const { return getExtInfo().getNoReturn(); } |
3660 | |
3661 | CallingConv getCallConv() const { return getExtInfo().getCC(); } |
3662 | ExtInfo getExtInfo() const { return ExtInfo(FunctionTypeBits.ExtInfo); } |
3663 | |
3664 | static_assert((~Qualifiers::FastMask & Qualifiers::CVRMask) == 0, |
3665 | "Const, volatile and restrict are assumed to be a subset of " |
3666 | "the fast qualifiers."); |
3667 | |
3668 | bool isConst() const { return getFastTypeQuals().hasConst(); } |
3669 | bool isVolatile() const { return getFastTypeQuals().hasVolatile(); } |
3670 | bool isRestrict() const { return getFastTypeQuals().hasRestrict(); } |
3671 | |
3672 | /// Determine the type of an expression that calls a function of |
3673 | /// this type. |
3674 | QualType getCallResultType(const ASTContext &Context) const { |
3675 | return getReturnType().getNonLValueExprType(Context); |
3676 | } |
3677 | |
3678 | static StringRef getNameForCallConv(CallingConv CC); |
3679 | |
3680 | static bool classof(const Type *T) { |
3681 | return T->getTypeClass() == FunctionNoProto || |
3682 | T->getTypeClass() == FunctionProto; |
3683 | } |
3684 | }; |
3685 | |
3686 | /// Represents a K&R-style 'int foo()' function, which has |
3687 | /// no information available about its arguments. |
3688 | class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode { |
3689 | friend class ASTContext; // ASTContext creates these. |
3690 | |
3691 | FunctionNoProtoType(QualType Result, QualType Canonical, ExtInfo Info) |
3692 | : FunctionType(FunctionNoProto, Result, Canonical, |
3693 | /*Dependent=*/false, /*InstantiationDependent=*/false, |
3694 | Result->isVariablyModifiedType(), |
3695 | /*ContainsUnexpandedParameterPack=*/false, Info) {} |
3696 | |
3697 | public: |
3698 | // No additional state past what FunctionType provides. |
3699 | |
3700 | bool isSugared() const { return false; } |
3701 | QualType desugar() const { return QualType(this, 0); } |
3702 | |
3703 | void Profile(llvm::FoldingSetNodeID &ID) { |
3704 | Profile(ID, getReturnType(), getExtInfo()); |
3705 | } |
3706 | |
3707 | static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType, |
3708 | ExtInfo Info) { |
3709 | Info.Profile(ID); |
3710 | ID.AddPointer(ResultType.getAsOpaquePtr()); |
3711 | } |
3712 | |
3713 | static bool classof(const Type *T) { |
3714 | return T->getTypeClass() == FunctionNoProto; |
3715 | } |
3716 | }; |
3717 | |
3718 | /// Represents a prototype with parameter type info, e.g. |
3719 | /// 'int foo(int)' or 'int foo(void)'. 'void' is represented as having no |
3720 | /// parameters, not as having a single void parameter. Such a type can have |
3721 | /// an exception specification, but this specification is not part of the |
3722 | /// canonical type. FunctionProtoType has several trailing objects, some of |
3723 | /// which optional. For more information about the trailing objects see |
3724 | /// the first comment inside FunctionProtoType. |
3725 | class FunctionProtoType final |
3726 | : public FunctionType, |
3727 | public llvm::FoldingSetNode, |
3728 | private llvm::TrailingObjects< |
3729 | FunctionProtoType, QualType, FunctionType::FunctionTypeExtraBitfields, |
3730 | FunctionType::ExceptionType, Expr *, FunctionDecl *, |
3731 | FunctionType::ExtParameterInfo, Qualifiers> { |
3732 | friend class ASTContext; // ASTContext creates these. |
3733 | friend TrailingObjects; |
3734 | |
3735 | // FunctionProtoType is followed by several trailing objects, some of |
3736 | // which optional. They are in order: |
3737 | // |
3738 | // * An array of getNumParams() QualType holding the parameter types. |
3739 | // Always present. Note that for the vast majority of FunctionProtoType, |
3740 | // these will be the only trailing objects. |
3741 | // |
3742 | // * Optionally if some extra data is stored in FunctionTypeExtraBitfields |
3743 | // (see FunctionTypeExtraBitfields and FunctionTypeBitfields): |
3744 | // a single FunctionTypeExtraBitfields. Present if and only if |
3745 | // hasExtraBitfields() is true. |
3746 | // |
3747 | // * Optionally exactly one of: |
3748 | // * an array of getNumExceptions() ExceptionType, |
3749 | // * a single Expr *, |
3750 | // * a pair of FunctionDecl *, |
3751 | // * a single FunctionDecl * |
3752 | // used to store information about the various types of exception |
3753 | // specification. See getExceptionSpecSize for the details. |
3754 | // |
3755 | // * Optionally an array of getNumParams() ExtParameterInfo holding |
3756 | // an ExtParameterInfo for each of the parameters. Present if and |
3757 | // only if hasExtParameterInfos() is true. |
3758 | // |
3759 | // * Optionally a Qualifiers object to represent extra qualifiers that can't |
3760 | // be represented by FunctionTypeBitfields.FastTypeQuals. Present if and only |
3761 | // if hasExtQualifiers() is true. |
3762 | // |
3763 | // The optional FunctionTypeExtraBitfields has to be before the data |
3764 | // related to the exception specification since it contains the number |
3765 | // of exception types. |
3766 | // |
3767 | // We put the ExtParameterInfos last. If all were equal, it would make |
3768 | // more sense to put these before the exception specification, because |
3769 | // it's much easier to skip past them compared to the elaborate switch |
3770 | // required to skip the exception specification. However, all is not |
3771 | // equal; ExtParameterInfos are used to model very uncommon features, |
3772 | // and it's better not to burden the more common paths. |
3773 | |
3774 | public: |
3775 | /// Holds information about the various types of exception specification. |
3776 | /// ExceptionSpecInfo is not stored as such in FunctionProtoType but is |
3777 | /// used to group together the various bits of information about the |
3778 | /// exception specification. |
3779 | struct ExceptionSpecInfo { |
3780 | /// The kind of exception specification this is. |
3781 | ExceptionSpecificationType Type = EST_None; |
3782 | |
3783 | /// Explicitly-specified list of exception types. |
3784 | ArrayRef<QualType> Exceptions; |
3785 | |
3786 | /// Noexcept expression, if this is a computed noexcept specification. |
3787 | Expr *NoexceptExpr = nullptr; |
3788 | |
3789 | /// The function whose exception specification this is, for |
3790 | /// EST_Unevaluated and EST_Uninstantiated. |
3791 | FunctionDecl *SourceDecl = nullptr; |
3792 | |
3793 | /// The function template whose exception specification this is instantiated |
3794 | /// from, for EST_Uninstantiated. |
3795 | FunctionDecl *SourceTemplate = nullptr; |
3796 | |
3797 | ExceptionSpecInfo() = default; |
3798 | |
3799 | ExceptionSpecInfo(ExceptionSpecificationType EST) : Type(EST) {} |
3800 | }; |
3801 | |
3802 | /// Extra information about a function prototype. ExtProtoInfo is not |
3803 | /// stored as such in FunctionProtoType but is used to group together |
3804 | /// the various bits of extra information about a function prototype. |
3805 | struct ExtProtoInfo { |
3806 | FunctionType::ExtInfo ExtInfo; |
3807 | bool Variadic : 1; |
3808 | bool HasTrailingReturn : 1; |
3809 | Qualifiers TypeQuals; |
3810 | RefQualifierKind RefQualifier = RQ_None; |
3811 | ExceptionSpecInfo ExceptionSpec; |
3812 | const ExtParameterInfo *ExtParameterInfos = nullptr; |
3813 | |
3814 | ExtProtoInfo() : Variadic(false), HasTrailingReturn(false) {} |
3815 | |
3816 | ExtProtoInfo(CallingConv CC) |
3817 | : ExtInfo(CC), Variadic(false), HasTrailingReturn(false) {} |
3818 | |
3819 | ExtProtoInfo withExceptionSpec(const ExceptionSpecInfo &ESI) { |
3820 | ExtProtoInfo Result(*this); |
3821 | Result.ExceptionSpec = ESI; |
3822 | return Result; |
3823 | } |
3824 | }; |
3825 | |
3826 | private: |
3827 | unsigned numTrailingObjects(OverloadToken<QualType>) const { |
3828 | return getNumParams(); |
3829 | } |
3830 | |
3831 | unsigned numTrailingObjects(OverloadToken<FunctionTypeExtraBitfields>) const { |
3832 | return hasExtraBitfields(); |
3833 | } |
3834 | |
3835 | unsigned numTrailingObjects(OverloadToken<ExceptionType>) const { |
3836 | return getExceptionSpecSize().NumExceptionType; |
3837 | } |
3838 | |
3839 | unsigned numTrailingObjects(OverloadToken<Expr *>) const { |
3840 | return getExceptionSpecSize().NumExprPtr; |
3841 | } |
3842 | |
3843 | unsigned numTrailingObjects(OverloadToken<FunctionDecl *>) const { |
3844 | return getExceptionSpecSize().NumFunctionDeclPtr; |
3845 | } |
3846 | |
3847 | unsigned numTrailingObjects(OverloadToken<ExtParameterInfo>) const { |
3848 | return hasExtParameterInfos() ? getNumParams() : 0; |
3849 | } |
3850 | |
3851 | /// Determine whether there are any argument types that |
3852 | /// contain an unexpanded parameter pack. |
3853 | static bool containsAnyUnexpandedParameterPack(const QualType *ArgArray, |
3854 | unsigned numArgs) { |
3855 | for (unsigned Idx = 0; Idx < numArgs; ++Idx) |
3856 | if (ArgArray[Idx]->containsUnexpandedParameterPack()) |
3857 | return true; |
3858 | |
3859 | return false; |
3860 | } |
3861 | |
3862 | FunctionProtoType(QualType result, ArrayRef<QualType> params, |
3863 | QualType canonical, const ExtProtoInfo &epi); |
3864 | |
3865 | /// This struct is returned by getExceptionSpecSize and is used to |
3866 | /// translate an ExceptionSpecificationType to the number and kind |
3867 | /// of trailing objects related to the exception specification. |
3868 | struct ExceptionSpecSizeHolder { |
3869 | unsigned NumExceptionType; |
3870 | unsigned NumExprPtr; |
3871 | unsigned NumFunctionDeclPtr; |
3872 | }; |
3873 | |
3874 | /// Return the number and kind of trailing objects |
3875 | /// related to the exception specification. |
3876 | static ExceptionSpecSizeHolder |
3877 | getExceptionSpecSize(ExceptionSpecificationType EST, unsigned NumExceptions) { |
3878 | switch (EST) { |
3879 | case EST_None: |
3880 | case EST_DynamicNone: |
3881 | case EST_MSAny: |
3882 | case EST_BasicNoexcept: |
3883 | case EST_Unparsed: |
3884 | case EST_NoThrow: |
3885 | return {0, 0, 0}; |
3886 | |
3887 | case EST_Dynamic: |
3888 | return {NumExceptions, 0, 0}; |
3889 | |
3890 | case EST_DependentNoexcept: |
3891 | case EST_NoexceptFalse: |
3892 | case EST_NoexceptTrue: |
3893 | return {0, 1, 0}; |
3894 | |
3895 | case EST_Uninstantiated: |
3896 | return {0, 0, 2}; |
3897 | |
3898 | case EST_Unevaluated: |
3899 | return {0, 0, 1}; |
3900 | } |
3901 | llvm_unreachable("bad exception specification kind")::llvm::llvm_unreachable_internal("bad exception specification kind" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 3901); |
3902 | } |
3903 | |
3904 | /// Return the number and kind of trailing objects |
3905 | /// related to the exception specification. |
3906 | ExceptionSpecSizeHolder getExceptionSpecSize() const { |
3907 | return getExceptionSpecSize(getExceptionSpecType(), getNumExceptions()); |
3908 | } |
3909 | |
3910 | /// Whether the trailing FunctionTypeExtraBitfields is present. |
3911 | static bool hasExtraBitfields(ExceptionSpecificationType EST) { |
3912 | // If the exception spec type is EST_Dynamic then we have > 0 exception |
3913 | // types and the exact number is stored in FunctionTypeExtraBitfields. |
3914 | return EST == EST_Dynamic; |
3915 | } |
3916 | |
3917 | /// Whether the trailing FunctionTypeExtraBitfields is present. |
3918 | bool hasExtraBitfields() const { |
3919 | return hasExtraBitfields(getExceptionSpecType()); |
3920 | } |
3921 | |
3922 | bool hasExtQualifiers() const { |
3923 | return FunctionTypeBits.HasExtQuals; |
3924 | } |
3925 | |
3926 | public: |
3927 | unsigned getNumParams() const { return FunctionTypeBits.NumParams; } |
3928 | |
3929 | QualType getParamType(unsigned i) const { |
3930 | assert(i < getNumParams() && "invalid parameter index")((i < getNumParams() && "invalid parameter index") ? static_cast<void> (0) : __assert_fail ("i < getNumParams() && \"invalid parameter index\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 3930, __PRETTY_FUNCTION__)); |
3931 | return param_type_begin()[i]; |
3932 | } |
3933 | |
3934 | ArrayRef<QualType> getParamTypes() const { |
3935 | return llvm::makeArrayRef(param_type_begin(), param_type_end()); |
3936 | } |
3937 | |
3938 | ExtProtoInfo getExtProtoInfo() const { |
3939 | ExtProtoInfo EPI; |
3940 | EPI.ExtInfo = getExtInfo(); |
3941 | EPI.Variadic = isVariadic(); |
3942 | EPI.HasTrailingReturn = hasTrailingReturn(); |
3943 | EPI.ExceptionSpec.Type = getExceptionSpecType(); |
3944 | EPI.TypeQuals = getMethodQuals(); |
3945 | EPI.RefQualifier = getRefQualifier(); |
3946 | if (EPI.ExceptionSpec.Type == EST_Dynamic) { |
3947 | EPI.ExceptionSpec.Exceptions = exceptions(); |
3948 | } else if (isComputedNoexcept(EPI.ExceptionSpec.Type)) { |
3949 | EPI.ExceptionSpec.NoexceptExpr = getNoexceptExpr(); |
3950 | } else if (EPI.ExceptionSpec.Type == EST_Uninstantiated) { |
3951 | EPI.ExceptionSpec.SourceDecl = getExceptionSpecDecl(); |
3952 | EPI.ExceptionSpec.SourceTemplate = getExceptionSpecTemplate(); |
3953 | } else if (EPI.ExceptionSpec.Type == EST_Unevaluated) { |
3954 | EPI.ExceptionSpec.SourceDecl = getExceptionSpecDecl(); |
3955 | } |
3956 | EPI.ExtParameterInfos = getExtParameterInfosOrNull(); |
3957 | return EPI; |
3958 | } |
3959 | |
3960 | /// Get the kind of exception specification on this function. |
3961 | ExceptionSpecificationType getExceptionSpecType() const { |
3962 | return static_cast<ExceptionSpecificationType>( |
3963 | FunctionTypeBits.ExceptionSpecType); |
3964 | } |
3965 | |
3966 | /// Return whether this function has any kind of exception spec. |
3967 | bool hasExceptionSpec() const { return getExceptionSpecType() != EST_None; } |
3968 | |
3969 | /// Return whether this function has a dynamic (throw) exception spec. |
3970 | bool hasDynamicExceptionSpec() const { |
3971 | return isDynamicExceptionSpec(getExceptionSpecType()); |
3972 | } |
3973 | |
3974 | /// Return whether this function has a noexcept exception spec. |
3975 | bool hasNoexceptExceptionSpec() const { |
3976 | return isNoexceptExceptionSpec(getExceptionSpecType()); |
3977 | } |
3978 | |
3979 | /// Return whether this function has a dependent exception spec. |
3980 | bool hasDependentExceptionSpec() const; |
3981 | |
3982 | /// Return whether this function has an instantiation-dependent exception |
3983 | /// spec. |
3984 | bool hasInstantiationDependentExceptionSpec() const; |
3985 | |
3986 | /// Return the number of types in the exception specification. |
3987 | unsigned getNumExceptions() const { |
3988 | return getExceptionSpecType() == EST_Dynamic |
3989 | ? getTrailingObjects<FunctionTypeExtraBitfields>() |
3990 | ->NumExceptionType |
3991 | : 0; |
3992 | } |
3993 | |
3994 | /// Return the ith exception type, where 0 <= i < getNumExceptions(). |
3995 | QualType getExceptionType(unsigned i) const { |
3996 | assert(i < getNumExceptions() && "Invalid exception number!")((i < getNumExceptions() && "Invalid exception number!" ) ? static_cast<void> (0) : __assert_fail ("i < getNumExceptions() && \"Invalid exception number!\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 3996, __PRETTY_FUNCTION__)); |
3997 | return exception_begin()[i]; |
3998 | } |
3999 | |
4000 | /// Return the expression inside noexcept(expression), or a null pointer |
4001 | /// if there is none (because the exception spec is not of this form). |
4002 | Expr *getNoexceptExpr() const { |
4003 | if (!isComputedNoexcept(getExceptionSpecType())) |
4004 | return nullptr; |
4005 | return *getTrailingObjects<Expr *>(); |
4006 | } |
4007 | |
4008 | /// If this function type has an exception specification which hasn't |
4009 | /// been determined yet (either because it has not been evaluated or because |
4010 | /// it has not been instantiated), this is the function whose exception |
4011 | /// specification is represented by this type. |
4012 | FunctionDecl *getExceptionSpecDecl() const { |
4013 | if (getExceptionSpecType() != EST_Uninstantiated && |
4014 | getExceptionSpecType() != EST_Unevaluated) |
4015 | return nullptr; |
4016 | return getTrailingObjects<FunctionDecl *>()[0]; |
4017 | } |
4018 | |
4019 | /// If this function type has an uninstantiated exception |
4020 | /// specification, this is the function whose exception specification |
4021 | /// should be instantiated to find the exception specification for |
4022 | /// this type. |
4023 | FunctionDecl *getExceptionSpecTemplate() const { |
4024 | if (getExceptionSpecType() != EST_Uninstantiated) |
4025 | return nullptr; |
4026 | return getTrailingObjects<FunctionDecl *>()[1]; |
4027 | } |
4028 | |
4029 | /// Determine whether this function type has a non-throwing exception |
4030 | /// specification. |
4031 | CanThrowResult canThrow() const; |
4032 | |
4033 | /// Determine whether this function type has a non-throwing exception |
4034 | /// specification. If this depends on template arguments, returns |
4035 | /// \c ResultIfDependent. |
4036 | bool isNothrow(bool ResultIfDependent = false) const { |
4037 | return ResultIfDependent ? canThrow() != CT_Can : canThrow() == CT_Cannot; |
4038 | } |
4039 | |
4040 | /// Whether this function prototype is variadic. |
4041 | bool isVariadic() const { return FunctionTypeBits.Variadic; } |
4042 | |
4043 | /// Determines whether this function prototype contains a |
4044 | /// parameter pack at the end. |
4045 | /// |
4046 | /// A function template whose last parameter is a parameter pack can be |
4047 | /// called with an arbitrary number of arguments, much like a variadic |
4048 | /// function. |
4049 | bool isTemplateVariadic() const; |
4050 | |
4051 | /// Whether this function prototype has a trailing return type. |
4052 | bool hasTrailingReturn() const { return FunctionTypeBits.HasTrailingReturn; } |
4053 | |
4054 | Qualifiers getMethodQuals() const { |
4055 | if (hasExtQualifiers()) |
4056 | return *getTrailingObjects<Qualifiers>(); |
4057 | else |
4058 | return getFastTypeQuals(); |
4059 | } |
4060 | |
4061 | /// Retrieve the ref-qualifier associated with this function type. |
4062 | RefQualifierKind getRefQualifier() const { |
4063 | return static_cast<RefQualifierKind>(FunctionTypeBits.RefQualifier); |
4064 | } |
4065 | |
4066 | using param_type_iterator = const QualType *; |
4067 | using param_type_range = llvm::iterator_range<param_type_iterator>; |
4068 | |
4069 | param_type_range param_types() const { |
4070 | return param_type_range(param_type_begin(), param_type_end()); |
4071 | } |
4072 | |
4073 | param_type_iterator param_type_begin() const { |
4074 | return getTrailingObjects<QualType>(); |
4075 | } |
4076 | |
4077 | param_type_iterator param_type_end() const { |
4078 | return param_type_begin() + getNumParams(); |
4079 | } |
4080 | |
4081 | using exception_iterator = const QualType *; |
4082 | |
4083 | ArrayRef<QualType> exceptions() const { |
4084 | return llvm::makeArrayRef(exception_begin(), exception_end()); |
4085 | } |
4086 | |
4087 | exception_iterator exception_begin() const { |
4088 | return reinterpret_cast<exception_iterator>( |
4089 | getTrailingObjects<ExceptionType>()); |
4090 | } |
4091 | |
4092 | exception_iterator exception_end() const { |
4093 | return exception_begin() + getNumExceptions(); |
4094 | } |
4095 | |
4096 | /// Is there any interesting extra information for any of the parameters |
4097 | /// of this function type? |
4098 | bool hasExtParameterInfos() const { |
4099 | return FunctionTypeBits.HasExtParameterInfos; |
4100 | } |
4101 | |
4102 | ArrayRef<ExtParameterInfo> getExtParameterInfos() const { |
4103 | assert(hasExtParameterInfos())((hasExtParameterInfos()) ? static_cast<void> (0) : __assert_fail ("hasExtParameterInfos()", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4103, __PRETTY_FUNCTION__)); |
4104 | return ArrayRef<ExtParameterInfo>(getTrailingObjects<ExtParameterInfo>(), |
4105 | getNumParams()); |
4106 | } |
4107 | |
4108 | /// Return a pointer to the beginning of the array of extra parameter |
4109 | /// information, if present, or else null if none of the parameters |
4110 | /// carry it. This is equivalent to getExtProtoInfo().ExtParameterInfos. |
4111 | const ExtParameterInfo *getExtParameterInfosOrNull() const { |
4112 | if (!hasExtParameterInfos()) |
4113 | return nullptr; |
4114 | return getTrailingObjects<ExtParameterInfo>(); |
4115 | } |
4116 | |
4117 | ExtParameterInfo getExtParameterInfo(unsigned I) const { |
4118 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4118, __PRETTY_FUNCTION__)); |
4119 | if (hasExtParameterInfos()) |
4120 | return getTrailingObjects<ExtParameterInfo>()[I]; |
4121 | return ExtParameterInfo(); |
4122 | } |
4123 | |
4124 | ParameterABI getParameterABI(unsigned I) const { |
4125 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4125, __PRETTY_FUNCTION__)); |
4126 | if (hasExtParameterInfos()) |
4127 | return getTrailingObjects<ExtParameterInfo>()[I].getABI(); |
4128 | return ParameterABI::Ordinary; |
4129 | } |
4130 | |
4131 | bool isParamConsumed(unsigned I) const { |
4132 | assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range" ) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4132, __PRETTY_FUNCTION__)); |
4133 | if (hasExtParameterInfos()) |
4134 | return getTrailingObjects<ExtParameterInfo>()[I].isConsumed(); |
4135 | return false; |
4136 | } |
4137 | |
4138 | bool isSugared() const { return false; } |
4139 | QualType desugar() const { return QualType(this, 0); } |
4140 | |
4141 | void printExceptionSpecification(raw_ostream &OS, |
4142 | const PrintingPolicy &Policy) const; |
4143 | |
4144 | static bool classof(const Type *T) { |
4145 | return T->getTypeClass() == FunctionProto; |
4146 | } |
4147 | |
4148 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx); |
4149 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Result, |
4150 | param_type_iterator ArgTys, unsigned NumArgs, |
4151 | const ExtProtoInfo &EPI, const ASTContext &Context, |
4152 | bool Canonical); |
4153 | }; |
4154 | |
4155 | /// Represents the dependent type named by a dependently-scoped |
4156 | /// typename using declaration, e.g. |
4157 | /// using typename Base<T>::foo; |
4158 | /// |
4159 | /// Template instantiation turns these into the underlying type. |
4160 | class UnresolvedUsingType : public Type { |
4161 | friend class ASTContext; // ASTContext creates these. |
4162 | |
4163 | UnresolvedUsingTypenameDecl *Decl; |
4164 | |
4165 | UnresolvedUsingType(const UnresolvedUsingTypenameDecl *D) |
4166 | : Type(UnresolvedUsing, QualType(), true, true, false, |
4167 | /*ContainsUnexpandedParameterPack=*/false), |
4168 | Decl(const_cast<UnresolvedUsingTypenameDecl*>(D)) {} |
4169 | |
4170 | public: |
4171 | UnresolvedUsingTypenameDecl *getDecl() const { return Decl; } |
4172 | |
4173 | bool isSugared() const { return false; } |
4174 | QualType desugar() const { return QualType(this, 0); } |
4175 | |
4176 | static bool classof(const Type *T) { |
4177 | return T->getTypeClass() == UnresolvedUsing; |
4178 | } |
4179 | |
4180 | void Profile(llvm::FoldingSetNodeID &ID) { |
4181 | return Profile(ID, Decl); |
4182 | } |
4183 | |
4184 | static void Profile(llvm::FoldingSetNodeID &ID, |
4185 | UnresolvedUsingTypenameDecl *D) { |
4186 | ID.AddPointer(D); |
4187 | } |
4188 | }; |
4189 | |
4190 | class TypedefType : public Type { |
4191 | TypedefNameDecl *Decl; |
4192 | |
4193 | protected: |
4194 | friend class ASTContext; // ASTContext creates these. |
4195 | |
4196 | TypedefType(TypeClass tc, const TypedefNameDecl *D, QualType can) |
4197 | : Type(tc, can, can->isDependentType(), |
4198 | can->isInstantiationDependentType(), |
4199 | can->isVariablyModifiedType(), |
4200 | /*ContainsUnexpandedParameterPack=*/false), |
4201 | Decl(const_cast<TypedefNameDecl*>(D)) { |
4202 | assert(!isa<TypedefType>(can) && "Invalid canonical type")((!isa<TypedefType>(can) && "Invalid canonical type" ) ? static_cast<void> (0) : __assert_fail ("!isa<TypedefType>(can) && \"Invalid canonical type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4202, __PRETTY_FUNCTION__)); |
4203 | } |
4204 | |
4205 | public: |
4206 | TypedefNameDecl *getDecl() const { return Decl; } |
4207 | |
4208 | bool isSugared() const { return true; } |
4209 | QualType desugar() const; |
4210 | |
4211 | static bool classof(const Type *T) { return T->getTypeClass() == Typedef; } |
4212 | }; |
4213 | |
4214 | /// Sugar type that represents a type that was qualified by a qualifier written |
4215 | /// as a macro invocation. |
4216 | class MacroQualifiedType : public Type { |
4217 | friend class ASTContext; // ASTContext creates these. |
4218 | |
4219 | QualType UnderlyingTy; |
4220 | const IdentifierInfo *MacroII; |
4221 | |
4222 | MacroQualifiedType(QualType UnderlyingTy, QualType CanonTy, |
4223 | const IdentifierInfo *MacroII) |
4224 | : Type(MacroQualified, CanonTy, UnderlyingTy->isDependentType(), |
4225 | UnderlyingTy->isInstantiationDependentType(), |
4226 | UnderlyingTy->isVariablyModifiedType(), |
4227 | UnderlyingTy->containsUnexpandedParameterPack()), |
4228 | UnderlyingTy(UnderlyingTy), MacroII(MacroII) { |
4229 | assert(isa<AttributedType>(UnderlyingTy) &&((isa<AttributedType>(UnderlyingTy) && "Expected a macro qualified type to only wrap attributed types." ) ? static_cast<void> (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4230, __PRETTY_FUNCTION__)) |
4230 | "Expected a macro qualified type to only wrap attributed types.")((isa<AttributedType>(UnderlyingTy) && "Expected a macro qualified type to only wrap attributed types." ) ? static_cast<void> (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4230, __PRETTY_FUNCTION__)); |
4231 | } |
4232 | |
4233 | public: |
4234 | const IdentifierInfo *getMacroIdentifier() const { return MacroII; } |
4235 | QualType getUnderlyingType() const { return UnderlyingTy; } |
4236 | |
4237 | /// Return this attributed type's modified type with no qualifiers attached to |
4238 | /// it. |
4239 | QualType getModifiedType() const; |
4240 | |
4241 | bool isSugared() const { return true; } |
4242 | QualType desugar() const; |
4243 | |
4244 | static bool classof(const Type *T) { |
4245 | return T->getTypeClass() == MacroQualified; |
4246 | } |
4247 | }; |
4248 | |
4249 | /// Represents a `typeof` (or __typeof__) expression (a GCC extension). |
4250 | class TypeOfExprType : public Type { |
4251 | Expr *TOExpr; |
4252 | |
4253 | protected: |
4254 | friend class ASTContext; // ASTContext creates these. |
4255 | |
4256 | TypeOfExprType(Expr *E, QualType can = QualType()); |
4257 | |
4258 | public: |
4259 | Expr *getUnderlyingExpr() const { return TOExpr; } |
4260 | |
4261 | /// Remove a single level of sugar. |
4262 | QualType desugar() const; |
4263 | |
4264 | /// Returns whether this type directly provides sugar. |
4265 | bool isSugared() const; |
4266 | |
4267 | static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExpr; } |
4268 | }; |
4269 | |
4270 | /// Internal representation of canonical, dependent |
4271 | /// `typeof(expr)` types. |
4272 | /// |
4273 | /// This class is used internally by the ASTContext to manage |
4274 | /// canonical, dependent types, only. Clients will only see instances |
4275 | /// of this class via TypeOfExprType nodes. |
4276 | class DependentTypeOfExprType |
4277 | : public TypeOfExprType, public llvm::FoldingSetNode { |
4278 | const ASTContext &Context; |
4279 | |
4280 | public: |
4281 | DependentTypeOfExprType(const ASTContext &Context, Expr *E) |
4282 | : TypeOfExprType(E), Context(Context) {} |
4283 | |
4284 | void Profile(llvm::FoldingSetNodeID &ID) { |
4285 | Profile(ID, Context, getUnderlyingExpr()); |
4286 | } |
4287 | |
4288 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, |
4289 | Expr *E); |
4290 | }; |
4291 | |
4292 | /// Represents `typeof(type)`, a GCC extension. |
4293 | class TypeOfType : public Type { |
4294 | friend class ASTContext; // ASTContext creates these. |
4295 | |
4296 | QualType TOType; |
4297 | |
4298 | TypeOfType(QualType T, QualType can) |
4299 | : Type(TypeOf, can, T->isDependentType(), |
4300 | T->isInstantiationDependentType(), |
4301 | T->isVariablyModifiedType(), |
4302 | T->containsUnexpandedParameterPack()), |
4303 | TOType(T) { |
4304 | assert(!isa<TypedefType>(can) && "Invalid canonical type")((!isa<TypedefType>(can) && "Invalid canonical type" ) ? static_cast<void> (0) : __assert_fail ("!isa<TypedefType>(can) && \"Invalid canonical type\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4304, __PRETTY_FUNCTION__)); |
4305 | } |
4306 | |
4307 | public: |
4308 | QualType getUnderlyingType() const { return TOType; } |
4309 | |
4310 | /// Remove a single level of sugar. |
4311 | QualType desugar() const { return getUnderlyingType(); } |
4312 | |
4313 | /// Returns whether this type directly provides sugar. |
4314 | bool isSugared() const { return true; } |
4315 | |
4316 | static bool classof(const Type *T) { return T->getTypeClass() == TypeOf; } |
4317 | }; |
4318 | |
4319 | /// Represents the type `decltype(expr)` (C++11). |
4320 | class DecltypeType : public Type { |
4321 | Expr *E; |
4322 | QualType UnderlyingType; |
4323 | |
4324 | protected: |
4325 | friend class ASTContext; // ASTContext creates these. |
4326 | |
4327 | DecltypeType(Expr *E, QualType underlyingType, QualType can = QualType()); |
4328 | |
4329 | public: |
4330 | Expr *getUnderlyingExpr() const { return E; } |
4331 | QualType getUnderlyingType() const { return UnderlyingType; } |
4332 | |
4333 | /// Remove a single level of sugar. |
4334 | QualType desugar() const; |
4335 | |
4336 | /// Returns whether this type directly provides sugar. |
4337 | bool isSugared() const; |
4338 | |
4339 | static bool classof(const Type *T) { return T->getTypeClass() == Decltype; } |
4340 | }; |
4341 | |
4342 | /// Internal representation of canonical, dependent |
4343 | /// decltype(expr) types. |
4344 | /// |
4345 | /// This class is used internally by the ASTContext to manage |
4346 | /// canonical, dependent types, only. Clients will only see instances |
4347 | /// of this class via DecltypeType nodes. |
4348 | class DependentDecltypeType : public DecltypeType, public llvm::FoldingSetNode { |
4349 | const ASTContext &Context; |
4350 | |
4351 | public: |
4352 | DependentDecltypeType(const ASTContext &Context, Expr *E); |
4353 | |
4354 | void Profile(llvm::FoldingSetNodeID &ID) { |
4355 | Profile(ID, Context, getUnderlyingExpr()); |
4356 | } |
4357 | |
4358 | static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context, |
4359 | Expr *E); |
4360 | }; |
4361 | |
4362 | /// A unary type transform, which is a type constructed from another. |
4363 | class UnaryTransformType : public Type { |
4364 | public: |
4365 | enum UTTKind { |
4366 | EnumUnderlyingType |
4367 | }; |
4368 | |
4369 | private: |
4370 | /// The untransformed type. |
4371 | QualType BaseType; |
4372 | |
4373 | /// The transformed type if not dependent, otherwise the same as BaseType. |
4374 | QualType UnderlyingType; |
4375 | |
4376 | UTTKind UKind; |
4377 | |
4378 | protected: |
4379 | friend class ASTContext; |
4380 | |
4381 | UnaryTransformType(QualType BaseTy, QualType UnderlyingTy, UTTKind UKind, |
4382 | QualType CanonicalTy); |
4383 | |
4384 | public: |
4385 | bool isSugared() const { return !isDependentType(); } |
4386 | QualType desugar() const { return UnderlyingType; } |
4387 | |
4388 | QualType getUnderlyingType() const { return UnderlyingType; } |
4389 | QualType getBaseType() const { return BaseType; } |
4390 | |
4391 | UTTKind getUTTKind() const { return UKind; } |
4392 | |
4393 | static bool classof(const Type *T) { |
4394 | return T->getTypeClass() == UnaryTransform; |
4395 | } |
4396 | }; |
4397 | |
4398 | /// Internal representation of canonical, dependent |
4399 | /// __underlying_type(type) types. |
4400 | /// |
4401 | /// This class is used internally by the ASTContext to manage |
4402 | /// canonical, dependent types, only. Clients will only see instances |
4403 | /// of this class via UnaryTransformType nodes. |
4404 | class DependentUnaryTransformType : public UnaryTransformType, |
4405 | public llvm::FoldingSetNode { |
4406 | public: |
4407 | DependentUnaryTransformType(const ASTContext &C, QualType BaseType, |
4408 | UTTKind UKind); |
4409 | |
4410 | void Profile(llvm::FoldingSetNodeID &ID) { |
4411 | Profile(ID, getBaseType(), getUTTKind()); |
4412 | } |
4413 | |
4414 | static void Profile(llvm::FoldingSetNodeID &ID, QualType BaseType, |
4415 | UTTKind UKind) { |
4416 | ID.AddPointer(BaseType.getAsOpaquePtr()); |
4417 | ID.AddInteger((unsigned)UKind); |
4418 | } |
4419 | }; |
4420 | |
4421 | class TagType : public Type { |
4422 | friend class ASTReader; |
4423 | |
4424 | /// Stores the TagDecl associated with this type. The decl may point to any |
4425 | /// TagDecl that declares the entity. |
4426 | TagDecl *decl; |
4427 | |
4428 | protected: |
4429 | TagType(TypeClass TC, const TagDecl *D, QualType can); |
4430 | |
4431 | public: |
4432 | TagDecl *getDecl() const; |
4433 | |
4434 | /// Determines whether this type is in the process of being defined. |
4435 | bool isBeingDefined() const; |
4436 | |
4437 | static bool classof(const Type *T) { |
4438 | return T->getTypeClass() == Enum || T->getTypeClass() == Record; |
4439 | } |
4440 | }; |
4441 | |
4442 | /// A helper class that allows the use of isa/cast/dyncast |
4443 | /// to detect TagType objects of structs/unions/classes. |
4444 | class RecordType : public TagType { |
4445 | protected: |
4446 | friend class ASTContext; // ASTContext creates these. |
4447 | |
4448 | explicit RecordType(const RecordDecl *D) |
4449 | : TagType(Record, reinterpret_cast<const TagDecl*>(D), QualType()) {} |
4450 | explicit RecordType(TypeClass TC, RecordDecl *D) |
4451 | : TagType(TC, reinterpret_cast<const TagDecl*>(D), QualType()) {} |
4452 | |
4453 | public: |
4454 | RecordDecl *getDecl() const { |
4455 | return reinterpret_cast<RecordDecl*>(TagType::getDecl()); |
4456 | } |
4457 | |
4458 | /// Recursively check all fields in the record for const-ness. If any field |
4459 | /// is declared const, return true. Otherwise, return false. |
4460 | bool hasConstFields() const; |
4461 | |
4462 | bool isSugared() const { return false; } |
4463 | QualType desugar() const { return QualType(this, 0); } |
4464 | |
4465 | static bool classof(const Type *T) { return T->getTypeClass() == Record; } |
4466 | }; |
4467 | |
4468 | /// A helper class that allows the use of isa/cast/dyncast |
4469 | /// to detect TagType objects of enums. |
4470 | class EnumType : public TagType { |
4471 | friend class ASTContext; // ASTContext creates these. |
4472 | |
4473 | explicit EnumType(const EnumDecl *D) |
4474 | : TagType(Enum, reinterpret_cast<const TagDecl*>(D), QualType()) {} |
4475 | |
4476 | public: |
4477 | EnumDecl *getDecl() const { |
4478 | return reinterpret_cast<EnumDecl*>(TagType::getDecl()); |
4479 | } |
4480 | |
4481 | bool isSugared() const { return false; } |
4482 | QualType desugar() const { return QualType(this, 0); } |
4483 | |
4484 | static bool classof(const Type *T) { return T->getTypeClass() == Enum; } |
4485 | }; |
4486 | |
4487 | /// An attributed type is a type to which a type attribute has been applied. |
4488 | /// |
4489 | /// The "modified type" is the fully-sugared type to which the attributed |
4490 | /// type was applied; generally it is not canonically equivalent to the |
4491 | /// attributed type. The "equivalent type" is the minimally-desugared type |
4492 | /// which the type is canonically equivalent to. |
4493 | /// |
4494 | /// For example, in the following attributed type: |
4495 | /// int32_t __attribute__((vector_size(16))) |
4496 | /// - the modified type is the TypedefType for int32_t |
4497 | /// - the equivalent type is VectorType(16, int32_t) |
4498 | /// - the canonical type is VectorType(16, int) |
4499 | class AttributedType : public Type, public llvm::FoldingSetNode { |
4500 | public: |
4501 | using Kind = attr::Kind; |
4502 | |
4503 | private: |
4504 | friend class ASTContext; // ASTContext creates these |
4505 | |
4506 | QualType ModifiedType; |
4507 | QualType EquivalentType; |
4508 | |
4509 | AttributedType(QualType canon, attr::Kind attrKind, QualType modified, |
4510 | QualType equivalent) |
4511 | : Type(Attributed, canon, equivalent->isDependentType(), |
4512 | equivalent->isInstantiationDependentType(), |
4513 | equivalent->isVariablyModifiedType(), |
4514 | equivalent->containsUnexpandedParameterPack()), |
4515 | ModifiedType(modified), EquivalentType(equivalent) { |
4516 | AttributedTypeBits.AttrKind = attrKind; |
4517 | } |
4518 | |
4519 | public: |
4520 | Kind getAttrKind() const { |
4521 | return static_cast<Kind>(AttributedTypeBits.AttrKind); |
4522 | } |
4523 | |
4524 | QualType getModifiedType() const { return ModifiedType; } |
4525 | QualType getEquivalentType() const { return EquivalentType; } |
4526 | |
4527 | bool isSugared() const { return true; } |
4528 | QualType desugar() const { return getEquivalentType(); } |
4529 | |
4530 | /// Does this attribute behave like a type qualifier? |
4531 | /// |
4532 | /// A type qualifier adjusts a type to provide specialized rules for |
4533 | /// a specific object, like the standard const and volatile qualifiers. |
4534 | /// This includes attributes controlling things like nullability, |
4535 | /// address spaces, and ARC ownership. The value of the object is still |
4536 | /// largely described by the modified type. |
4537 | /// |
4538 | /// In contrast, many type attributes "rewrite" their modified type to |
4539 | /// produce a fundamentally different type, not necessarily related in any |
4540 | /// formalizable way to the original type. For example, calling convention |
4541 | /// and vector attributes are not simple type qualifiers. |
4542 | /// |
4543 | /// Type qualifiers are often, but not always, reflected in the canonical |
4544 | /// type. |
4545 | bool isQualifier() const; |
4546 | |
4547 | bool isMSTypeSpec() const; |
4548 | |
4549 | bool isCallingConv() const; |
4550 | |
4551 | llvm::Optional<NullabilityKind> getImmediateNullability() const; |
4552 | |
4553 | /// Retrieve the attribute kind corresponding to the given |
4554 | /// nullability kind. |
4555 | static Kind getNullabilityAttrKind(NullabilityKind kind) { |
4556 | switch (kind) { |
4557 | case NullabilityKind::NonNull: |
4558 | return attr::TypeNonNull; |
4559 | |
4560 | case NullabilityKind::Nullable: |
4561 | return attr::TypeNullable; |
4562 | |
4563 | case NullabilityKind::Unspecified: |
4564 | return attr::TypeNullUnspecified; |
4565 | } |
4566 | llvm_unreachable("Unknown nullability kind.")::llvm::llvm_unreachable_internal("Unknown nullability kind." , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4566); |
4567 | } |
4568 | |
4569 | /// Strip off the top-level nullability annotation on the given |
4570 | /// type, if it's there. |
4571 | /// |
4572 | /// \param T The type to strip. If the type is exactly an |
4573 | /// AttributedType specifying nullability (without looking through |
4574 | /// type sugar), the nullability is returned and this type changed |
4575 | /// to the underlying modified type. |
4576 | /// |
4577 | /// \returns the top-level nullability, if present. |
4578 | static Optional<NullabilityKind> stripOuterNullability(QualType &T); |
4579 | |
4580 | void Profile(llvm::FoldingSetNodeID &ID) { |
4581 | Profile(ID, getAttrKind(), ModifiedType, EquivalentType); |
4582 | } |
4583 | |
4584 | static void Profile(llvm::FoldingSetNodeID &ID, Kind attrKind, |
4585 | QualType modified, QualType equivalent) { |
4586 | ID.AddInteger(attrKind); |
4587 | ID.AddPointer(modified.getAsOpaquePtr()); |
4588 | ID.AddPointer(equivalent.getAsOpaquePtr()); |
4589 | } |
4590 | |
4591 | static bool classof(const Type *T) { |
4592 | return T->getTypeClass() == Attributed; |
4593 | } |
4594 | }; |
4595 | |
4596 | class TemplateTypeParmType : public Type, public llvm::FoldingSetNode { |
4597 | friend class ASTContext; // ASTContext creates these |
4598 | |
4599 | // Helper data collector for canonical types. |
4600 | struct CanonicalTTPTInfo { |
4601 | unsigned Depth : 15; |
4602 | unsigned ParameterPack : 1; |
4603 | unsigned Index : 16; |
4604 | }; |
4605 | |
4606 | union { |
4607 | // Info for the canonical type. |
4608 | CanonicalTTPTInfo CanTTPTInfo; |
4609 | |
4610 | // Info for the non-canonical type. |
4611 | TemplateTypeParmDecl *TTPDecl; |
4612 | }; |
4613 | |
4614 | /// Build a non-canonical type. |
4615 | TemplateTypeParmType(TemplateTypeParmDecl *TTPDecl, QualType Canon) |
4616 | : Type(TemplateTypeParm, Canon, /*Dependent=*/true, |
4617 | /*InstantiationDependent=*/true, |
4618 | /*VariablyModified=*/false, |
4619 | Canon->containsUnexpandedParameterPack()), |
4620 | TTPDecl(TTPDecl) {} |
4621 | |
4622 | /// Build the canonical type. |
4623 | TemplateTypeParmType(unsigned D, unsigned I, bool PP) |
4624 | : Type(TemplateTypeParm, QualType(this, 0), |
4625 | /*Dependent=*/true, |
4626 | /*InstantiationDependent=*/true, |
4627 | /*VariablyModified=*/false, PP) { |
4628 | CanTTPTInfo.Depth = D; |
4629 | CanTTPTInfo.Index = I; |
4630 | CanTTPTInfo.ParameterPack = PP; |
4631 | } |
4632 | |
4633 | const CanonicalTTPTInfo& getCanTTPTInfo() const { |
4634 | QualType Can = getCanonicalTypeInternal(); |
4635 | return Can->castAs<TemplateTypeParmType>()->CanTTPTInfo; |
4636 | } |
4637 | |
4638 | public: |
4639 | unsigned getDepth() const { return getCanTTPTInfo().Depth; } |
4640 | unsigned getIndex() const { return getCanTTPTInfo().Index; } |
4641 | bool isParameterPack() const { return getCanTTPTInfo().ParameterPack; } |
4642 | |
4643 | TemplateTypeParmDecl *getDecl() const { |
4644 | return isCanonicalUnqualified() ? nullptr : TTPDecl; |
4645 | } |
4646 | |
4647 | IdentifierInfo *getIdentifier() const; |
4648 | |
4649 | bool isSugared() const { return false; } |
4650 | QualType desugar() const { return QualType(this, 0); } |
4651 | |
4652 | void Profile(llvm::FoldingSetNodeID &ID) { |
4653 | Profile(ID, getDepth(), getIndex(), isParameterPack(), getDecl()); |
4654 | } |
4655 | |
4656 | static void Profile(llvm::FoldingSetNodeID &ID, unsigned Depth, |
4657 | unsigned Index, bool ParameterPack, |
4658 | TemplateTypeParmDecl *TTPDecl) { |
4659 | ID.AddInteger(Depth); |
4660 | ID.AddInteger(Index); |
4661 | ID.AddBoolean(ParameterPack); |
4662 | ID.AddPointer(TTPDecl); |
4663 | } |
4664 | |
4665 | static bool classof(const Type *T) { |
4666 | return T->getTypeClass() == TemplateTypeParm; |
4667 | } |
4668 | }; |
4669 | |
4670 | /// Represents the result of substituting a type for a template |
4671 | /// type parameter. |
4672 | /// |
4673 | /// Within an instantiated template, all template type parameters have |
4674 | /// been replaced with these. They are used solely to record that a |
4675 | /// type was originally written as a template type parameter; |
4676 | /// therefore they are never canonical. |
4677 | class SubstTemplateTypeParmType : public Type, public llvm::FoldingSetNode { |
4678 | friend class ASTContext; |
4679 | |
4680 | // The original type parameter. |
4681 | const TemplateTypeParmType *Replaced; |
4682 | |
4683 | SubstTemplateTypeParmType(const TemplateTypeParmType *Param, QualType Canon) |
4684 | : Type(SubstTemplateTypeParm, Canon, Canon->isDependentType(), |
4685 | Canon->isInstantiationDependentType(), |
4686 | Canon->isVariablyModifiedType(), |
4687 | Canon->containsUnexpandedParameterPack()), |
4688 | Replaced(Param) {} |
4689 | |
4690 | public: |
4691 | /// Gets the template parameter that was substituted for. |
4692 | const TemplateTypeParmType *getReplacedParameter() const { |
4693 | return Replaced; |
4694 | } |
4695 | |
4696 | /// Gets the type that was substituted for the template |
4697 | /// parameter. |
4698 | QualType getReplacementType() const { |
4699 | return getCanonicalTypeInternal(); |
4700 | } |
4701 | |
4702 | bool isSugared() const { return true; } |
4703 | QualType desugar() const { return getReplacementType(); } |
4704 | |
4705 | void Profile(llvm::FoldingSetNodeID &ID) { |
4706 | Profile(ID, getReplacedParameter(), getReplacementType()); |
4707 | } |
4708 | |
4709 | static void Profile(llvm::FoldingSetNodeID &ID, |
4710 | const TemplateTypeParmType *Replaced, |
4711 | QualType Replacement) { |
4712 | ID.AddPointer(Replaced); |
4713 | ID.AddPointer(Replacement.getAsOpaquePtr()); |
4714 | } |
4715 | |
4716 | static bool classof(const Type *T) { |
4717 | return T->getTypeClass() == SubstTemplateTypeParm; |
4718 | } |
4719 | }; |
4720 | |
4721 | /// Represents the result of substituting a set of types for a template |
4722 | /// type parameter pack. |
4723 | /// |
4724 | /// When a pack expansion in the source code contains multiple parameter packs |
4725 | /// and those parameter packs correspond to different levels of template |
4726 | /// parameter lists, this type node is used to represent a template type |
4727 | /// parameter pack from an outer level, which has already had its argument pack |
4728 | /// substituted but that still lives within a pack expansion that itself |
4729 | /// could not be instantiated. When actually performing a substitution into |
4730 | /// that pack expansion (e.g., when all template parameters have corresponding |
4731 | /// arguments), this type will be replaced with the \c SubstTemplateTypeParmType |
4732 | /// at the current pack substitution index. |
4733 | class SubstTemplateTypeParmPackType : public Type, public llvm::FoldingSetNode { |
4734 | friend class ASTContext; |
4735 | |
4736 | /// The original type parameter. |
4737 | const TemplateTypeParmType *Replaced; |
4738 | |
4739 | /// A pointer to the set of template arguments that this |
4740 | /// parameter pack is instantiated with. |
4741 | const TemplateArgument *Arguments; |
4742 | |
4743 | SubstTemplateTypeParmPackType(const TemplateTypeParmType *Param, |
4744 | QualType Canon, |
4745 | const TemplateArgument &ArgPack); |
4746 | |
4747 | public: |
4748 | IdentifierInfo *getIdentifier() const { return Replaced->getIdentifier(); } |
4749 | |
4750 | /// Gets the template parameter that was substituted for. |
4751 | const TemplateTypeParmType *getReplacedParameter() const { |
4752 | return Replaced; |
4753 | } |
4754 | |
4755 | unsigned getNumArgs() const { |
4756 | return SubstTemplateTypeParmPackTypeBits.NumArgs; |
4757 | } |
4758 | |
4759 | bool isSugared() const { return false; } |
4760 | QualType desugar() const { return QualType(this, 0); } |
4761 | |
4762 | TemplateArgument getArgumentPack() const; |
4763 | |
4764 | void Profile(llvm::FoldingSetNodeID &ID); |
4765 | static void Profile(llvm::FoldingSetNodeID &ID, |
4766 | const TemplateTypeParmType *Replaced, |
4767 | const TemplateArgument &ArgPack); |
4768 | |
4769 | static bool classof(const Type *T) { |
4770 | return T->getTypeClass() == SubstTemplateTypeParmPack; |
4771 | } |
4772 | }; |
4773 | |
4774 | /// Common base class for placeholders for types that get replaced by |
4775 | /// placeholder type deduction: C++11 auto, C++14 decltype(auto), C++17 deduced |
4776 | /// class template types, and (eventually) constrained type names from the C++ |
4777 | /// Concepts TS. |
4778 | /// |
4779 | /// These types are usually a placeholder for a deduced type. However, before |
4780 | /// the initializer is attached, or (usually) if the initializer is |
4781 | /// type-dependent, there is no deduced type and the type is canonical. In |
4782 | /// the latter case, it is also a dependent type. |
4783 | class DeducedType : public Type { |
4784 | protected: |
4785 | DeducedType(TypeClass TC, QualType DeducedAsType, bool IsDependent, |
4786 | bool IsInstantiationDependent, bool ContainsParameterPack) |
4787 | : Type(TC, |
4788 | // FIXME: Retain the sugared deduced type? |
4789 | DeducedAsType.isNull() ? QualType(this, 0) |
4790 | : DeducedAsType.getCanonicalType(), |
4791 | IsDependent, IsInstantiationDependent, |
4792 | /*VariablyModified=*/false, ContainsParameterPack) { |
4793 | if (!DeducedAsType.isNull()) { |
4794 | if (DeducedAsType->isDependentType()) |
4795 | setDependent(); |
4796 | if (DeducedAsType->isInstantiationDependentType()) |
4797 | setInstantiationDependent(); |
4798 | if (DeducedAsType->containsUnexpandedParameterPack()) |
4799 | setContainsUnexpandedParameterPack(); |
4800 | } |
4801 | } |
4802 | |
4803 | public: |
4804 | bool isSugared() const { return !isCanonicalUnqualified(); } |
4805 | QualType desugar() const { return getCanonicalTypeInternal(); } |
4806 | |
4807 | /// Get the type deduced for this placeholder type, or null if it's |
4808 | /// either not been deduced or was deduced to a dependent type. |
4809 | QualType getDeducedType() const { |
4810 | return !isCanonicalUnqualified() ? getCanonicalTypeInternal() : QualType(); |
4811 | } |
4812 | bool isDeduced() const { |
4813 | return !isCanonicalUnqualified() || isDependentType(); |
4814 | } |
4815 | |
4816 | static bool classof(const Type *T) { |
4817 | return T->getTypeClass() == Auto || |
4818 | T->getTypeClass() == DeducedTemplateSpecialization; |
4819 | } |
4820 | }; |
4821 | |
4822 | /// Represents a C++11 auto or C++14 decltype(auto) type. |
4823 | class AutoType : public DeducedType, public llvm::FoldingSetNode { |
4824 | friend class ASTContext; // ASTContext creates these |
4825 | |
4826 | AutoType(QualType DeducedAsType, AutoTypeKeyword Keyword, |
4827 | bool IsDeducedAsDependent, bool IsDeducedAsPack) |
4828 | : DeducedType(Auto, DeducedAsType, IsDeducedAsDependent, |
4829 | IsDeducedAsDependent, IsDeducedAsPack) { |
4830 | AutoTypeBits.Keyword = (unsigned)Keyword; |
4831 | } |
4832 | |
4833 | public: |
4834 | bool isDecltypeAuto() const { |
4835 | return getKeyword() == AutoTypeKeyword::DecltypeAuto; |
4836 | } |
4837 | |
4838 | AutoTypeKeyword getKeyword() const { |
4839 | return (AutoTypeKeyword)AutoTypeBits.Keyword; |
4840 | } |
4841 | |
4842 | void Profile(llvm::FoldingSetNodeID &ID) { |
4843 | Profile(ID, getDeducedType(), getKeyword(), isDependentType(), |
4844 | containsUnexpandedParameterPack()); |
4845 | } |
4846 | |
4847 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Deduced, |
4848 | AutoTypeKeyword Keyword, bool IsDependent, bool IsPack) { |
4849 | ID.AddPointer(Deduced.getAsOpaquePtr()); |
4850 | ID.AddInteger((unsigned)Keyword); |
4851 | ID.AddBoolean(IsDependent); |
4852 | ID.AddBoolean(IsPack); |
4853 | } |
4854 | |
4855 | static bool classof(const Type *T) { |
4856 | return T->getTypeClass() == Auto; |
4857 | } |
4858 | }; |
4859 | |
4860 | /// Represents a C++17 deduced template specialization type. |
4861 | class DeducedTemplateSpecializationType : public DeducedType, |
4862 | public llvm::FoldingSetNode { |
4863 | friend class ASTContext; // ASTContext creates these |
4864 | |
4865 | /// The name of the template whose arguments will be deduced. |
4866 | TemplateName Template; |
4867 | |
4868 | DeducedTemplateSpecializationType(TemplateName Template, |
4869 | QualType DeducedAsType, |
4870 | bool IsDeducedAsDependent) |
4871 | : DeducedType(DeducedTemplateSpecialization, DeducedAsType, |
4872 | IsDeducedAsDependent || Template.isDependent(), |
4873 | IsDeducedAsDependent || Template.isInstantiationDependent(), |
4874 | Template.containsUnexpandedParameterPack()), |
4875 | Template(Template) {} |
4876 | |
4877 | public: |
4878 | /// Retrieve the name of the template that we are deducing. |
4879 | TemplateName getTemplateName() const { return Template;} |
4880 | |
4881 | void Profile(llvm::FoldingSetNodeID &ID) { |
4882 | Profile(ID, getTemplateName(), getDeducedType(), isDependentType()); |
4883 | } |
4884 | |
4885 | static void Profile(llvm::FoldingSetNodeID &ID, TemplateName Template, |
4886 | QualType Deduced, bool IsDependent) { |
4887 | Template.Profile(ID); |
4888 | ID.AddPointer(Deduced.getAsOpaquePtr()); |
4889 | ID.AddBoolean(IsDependent); |
4890 | } |
4891 | |
4892 | static bool classof(const Type *T) { |
4893 | return T->getTypeClass() == DeducedTemplateSpecialization; |
4894 | } |
4895 | }; |
4896 | |
4897 | /// Represents a type template specialization; the template |
4898 | /// must be a class template, a type alias template, or a template |
4899 | /// template parameter. A template which cannot be resolved to one of |
4900 | /// these, e.g. because it is written with a dependent scope |
4901 | /// specifier, is instead represented as a |
4902 | /// @c DependentTemplateSpecializationType. |
4903 | /// |
4904 | /// A non-dependent template specialization type is always "sugar", |
4905 | /// typically for a \c RecordType. For example, a class template |
4906 | /// specialization type of \c vector<int> will refer to a tag type for |
4907 | /// the instantiation \c std::vector<int, std::allocator<int>> |
4908 | /// |
4909 | /// Template specializations are dependent if either the template or |
4910 | /// any of the template arguments are dependent, in which case the |
4911 | /// type may also be canonical. |
4912 | /// |
4913 | /// Instances of this type are allocated with a trailing array of |
4914 | /// TemplateArguments, followed by a QualType representing the |
4915 | /// non-canonical aliased type when the template is a type alias |
4916 | /// template. |
4917 | class alignas(8) TemplateSpecializationType |
4918 | : public Type, |
4919 | public llvm::FoldingSetNode { |
4920 | friend class ASTContext; // ASTContext creates these |
4921 | |
4922 | /// The name of the template being specialized. This is |
4923 | /// either a TemplateName::Template (in which case it is a |
4924 | /// ClassTemplateDecl*, a TemplateTemplateParmDecl*, or a |
4925 | /// TypeAliasTemplateDecl*), a |
4926 | /// TemplateName::SubstTemplateTemplateParmPack, or a |
4927 | /// TemplateName::SubstTemplateTemplateParm (in which case the |
4928 | /// replacement must, recursively, be one of these). |
4929 | TemplateName Template; |
4930 | |
4931 | TemplateSpecializationType(TemplateName T, |
4932 | ArrayRef<TemplateArgument> Args, |
4933 | QualType Canon, |
4934 | QualType Aliased); |
4935 | |
4936 | public: |
4937 | /// Determine whether any of the given template arguments are dependent. |
4938 | static bool anyDependentTemplateArguments(ArrayRef<TemplateArgumentLoc> Args, |
4939 | bool &InstantiationDependent); |
4940 | |
4941 | static bool anyDependentTemplateArguments(const TemplateArgumentListInfo &, |
4942 | bool &InstantiationDependent); |
4943 | |
4944 | /// True if this template specialization type matches a current |
4945 | /// instantiation in the context in which it is found. |
4946 | bool isCurrentInstantiation() const { |
4947 | return isa<InjectedClassNameType>(getCanonicalTypeInternal()); |
4948 | } |
4949 | |
4950 | /// Determine if this template specialization type is for a type alias |
4951 | /// template that has been substituted. |
4952 | /// |
4953 | /// Nearly every template specialization type whose template is an alias |
4954 | /// template will be substituted. However, this is not the case when |
4955 | /// the specialization contains a pack expansion but the template alias |
4956 | /// does not have a corresponding parameter pack, e.g., |
4957 | /// |
4958 | /// \code |
4959 | /// template<typename T, typename U, typename V> struct S; |
4960 | /// template<typename T, typename U> using A = S<T, int, U>; |
4961 | /// template<typename... Ts> struct X { |
4962 | /// typedef A<Ts...> type; // not a type alias |
4963 | /// }; |
4964 | /// \endcode |
4965 | bool isTypeAlias() const { return TemplateSpecializationTypeBits.TypeAlias; } |
4966 | |
4967 | /// Get the aliased type, if this is a specialization of a type alias |
4968 | /// template. |
4969 | QualType getAliasedType() const { |
4970 | assert(isTypeAlias() && "not a type alias template specialization")((isTypeAlias() && "not a type alias template specialization" ) ? static_cast<void> (0) : __assert_fail ("isTypeAlias() && \"not a type alias template specialization\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 4970, __PRETTY_FUNCTION__)); |
4971 | return *reinterpret_cast<const QualType*>(end()); |
4972 | } |
4973 | |
4974 | using iterator = const TemplateArgument *; |
4975 | |
4976 | iterator begin() const { return getArgs(); } |
4977 | iterator end() const; // defined inline in TemplateBase.h |
4978 | |
4979 | /// Retrieve the name of the template that we are specializing. |
4980 | TemplateName getTemplateName() const { return Template; } |
4981 | |
4982 | /// Retrieve the template arguments. |
4983 | const TemplateArgument *getArgs() const { |
4984 | return reinterpret_cast<const TemplateArgument *>(this + 1); |
4985 | } |
4986 | |
4987 | /// Retrieve the number of template arguments. |
4988 | unsigned getNumArgs() const { |
4989 | return TemplateSpecializationTypeBits.NumArgs; |
4990 | } |
4991 | |
4992 | /// Retrieve a specific template argument as a type. |
4993 | /// \pre \c isArgType(Arg) |
4994 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h |
4995 | |
4996 | ArrayRef<TemplateArgument> template_arguments() const { |
4997 | return {getArgs(), getNumArgs()}; |
4998 | } |
4999 | |
5000 | bool isSugared() const { |
5001 | return !isDependentType() || isCurrentInstantiation() || isTypeAlias(); |
5002 | } |
5003 | |
5004 | QualType desugar() const { |
5005 | return isTypeAlias() ? getAliasedType() : getCanonicalTypeInternal(); |
5006 | } |
5007 | |
5008 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) { |
5009 | Profile(ID, Template, template_arguments(), Ctx); |
5010 | if (isTypeAlias()) |
5011 | getAliasedType().Profile(ID); |
5012 | } |
5013 | |
5014 | static void Profile(llvm::FoldingSetNodeID &ID, TemplateName T, |
5015 | ArrayRef<TemplateArgument> Args, |
5016 | const ASTContext &Context); |
5017 | |
5018 | static bool classof(const Type *T) { |
5019 | return T->getTypeClass() == TemplateSpecialization; |
5020 | } |
5021 | }; |
5022 | |
5023 | /// Print a template argument list, including the '<' and '>' |
5024 | /// enclosing the template arguments. |
5025 | void printTemplateArgumentList(raw_ostream &OS, |
5026 | ArrayRef<TemplateArgument> Args, |
5027 | const PrintingPolicy &Policy); |
5028 | |
5029 | void printTemplateArgumentList(raw_ostream &OS, |
5030 | ArrayRef<TemplateArgumentLoc> Args, |
5031 | const PrintingPolicy &Policy); |
5032 | |
5033 | void printTemplateArgumentList(raw_ostream &OS, |
5034 | const TemplateArgumentListInfo &Args, |
5035 | const PrintingPolicy &Policy); |
5036 | |
5037 | /// The injected class name of a C++ class template or class |
5038 | /// template partial specialization. Used to record that a type was |
5039 | /// spelled with a bare identifier rather than as a template-id; the |
5040 | /// equivalent for non-templated classes is just RecordType. |
5041 | /// |
5042 | /// Injected class name types are always dependent. Template |
5043 | /// instantiation turns these into RecordTypes. |
5044 | /// |
5045 | /// Injected class name types are always canonical. This works |
5046 | /// because it is impossible to compare an injected class name type |
5047 | /// with the corresponding non-injected template type, for the same |
5048 | /// reason that it is impossible to directly compare template |
5049 | /// parameters from different dependent contexts: injected class name |
5050 | /// types can only occur within the scope of a particular templated |
5051 | /// declaration, and within that scope every template specialization |
5052 | /// will canonicalize to the injected class name (when appropriate |
5053 | /// according to the rules of the language). |
5054 | class InjectedClassNameType : public Type { |
5055 | friend class ASTContext; // ASTContext creates these. |
5056 | friend class ASTNodeImporter; |
5057 | friend class ASTReader; // FIXME: ASTContext::getInjectedClassNameType is not |
5058 | // currently suitable for AST reading, too much |
5059 | // interdependencies. |
5060 | |
5061 | CXXRecordDecl *Decl; |
5062 | |
5063 | /// The template specialization which this type represents. |
5064 | /// For example, in |
5065 | /// template <class T> class A { ... }; |
5066 | /// this is A<T>, whereas in |
5067 | /// template <class X, class Y> class A<B<X,Y> > { ... }; |
5068 | /// this is A<B<X,Y> >. |
5069 | /// |
5070 | /// It is always unqualified, always a template specialization type, |
5071 | /// and always dependent. |
5072 | QualType InjectedType; |
5073 | |
5074 | InjectedClassNameType(CXXRecordDecl *D, QualType TST) |
5075 | : Type(InjectedClassName, QualType(), /*Dependent=*/true, |
5076 | /*InstantiationDependent=*/true, |
5077 | /*VariablyModified=*/false, |
5078 | /*ContainsUnexpandedParameterPack=*/false), |
5079 | Decl(D), InjectedType(TST) { |
5080 | assert(isa<TemplateSpecializationType>(TST))((isa<TemplateSpecializationType>(TST)) ? static_cast< void> (0) : __assert_fail ("isa<TemplateSpecializationType>(TST)" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5080, __PRETTY_FUNCTION__)); |
5081 | assert(!TST.hasQualifiers())((!TST.hasQualifiers()) ? static_cast<void> (0) : __assert_fail ("!TST.hasQualifiers()", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5081, __PRETTY_FUNCTION__)); |
5082 | assert(TST->isDependentType())((TST->isDependentType()) ? static_cast<void> (0) : __assert_fail ("TST->isDependentType()", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5082, __PRETTY_FUNCTION__)); |
5083 | } |
5084 | |
5085 | public: |
5086 | QualType getInjectedSpecializationType() const { return InjectedType; } |
5087 | |
5088 | const TemplateSpecializationType *getInjectedTST() const { |
5089 | return cast<TemplateSpecializationType>(InjectedType.getTypePtr()); |
5090 | } |
5091 | |
5092 | TemplateName getTemplateName() const { |
5093 | return getInjectedTST()->getTemplateName(); |
5094 | } |
5095 | |
5096 | CXXRecordDecl *getDecl() const; |
5097 | |
5098 | bool isSugared() const { return false; } |
5099 | QualType desugar() const { return QualType(this, 0); } |
5100 | |
5101 | static bool classof(const Type *T) { |
5102 | return T->getTypeClass() == InjectedClassName; |
5103 | } |
5104 | }; |
5105 | |
5106 | /// The kind of a tag type. |
5107 | enum TagTypeKind { |
5108 | /// The "struct" keyword. |
5109 | TTK_Struct, |
5110 | |
5111 | /// The "__interface" keyword. |
5112 | TTK_Interface, |
5113 | |
5114 | /// The "union" keyword. |
5115 | TTK_Union, |
5116 | |
5117 | /// The "class" keyword. |
5118 | TTK_Class, |
5119 | |
5120 | /// The "enum" keyword. |
5121 | TTK_Enum |
5122 | }; |
5123 | |
5124 | /// The elaboration keyword that precedes a qualified type name or |
5125 | /// introduces an elaborated-type-specifier. |
5126 | enum ElaboratedTypeKeyword { |
5127 | /// The "struct" keyword introduces the elaborated-type-specifier. |
5128 | ETK_Struct, |
5129 | |
5130 | /// The "__interface" keyword introduces the elaborated-type-specifier. |
5131 | ETK_Interface, |
5132 | |
5133 | /// The "union" keyword introduces the elaborated-type-specifier. |
5134 | ETK_Union, |
5135 | |
5136 | /// The "class" keyword introduces the elaborated-type-specifier. |
5137 | ETK_Class, |
5138 | |
5139 | /// The "enum" keyword introduces the elaborated-type-specifier. |
5140 | ETK_Enum, |
5141 | |
5142 | /// The "typename" keyword precedes the qualified type name, e.g., |
5143 | /// \c typename T::type. |
5144 | ETK_Typename, |
5145 | |
5146 | /// No keyword precedes the qualified type name. |
5147 | ETK_None |
5148 | }; |
5149 | |
5150 | /// A helper class for Type nodes having an ElaboratedTypeKeyword. |
5151 | /// The keyword in stored in the free bits of the base class. |
5152 | /// Also provides a few static helpers for converting and printing |
5153 | /// elaborated type keyword and tag type kind enumerations. |
5154 | class TypeWithKeyword : public Type { |
5155 | protected: |
5156 | TypeWithKeyword(ElaboratedTypeKeyword Keyword, TypeClass tc, |
5157 | QualType Canonical, bool Dependent, |
5158 | bool InstantiationDependent, bool VariablyModified, |
5159 | bool ContainsUnexpandedParameterPack) |
5160 | : Type(tc, Canonical, Dependent, InstantiationDependent, VariablyModified, |
5161 | ContainsUnexpandedParameterPack) { |
5162 | TypeWithKeywordBits.Keyword = Keyword; |
5163 | } |
5164 | |
5165 | public: |
5166 | ElaboratedTypeKeyword getKeyword() const { |
5167 | return static_cast<ElaboratedTypeKeyword>(TypeWithKeywordBits.Keyword); |
5168 | } |
5169 | |
5170 | /// Converts a type specifier (DeclSpec::TST) into an elaborated type keyword. |
5171 | static ElaboratedTypeKeyword getKeywordForTypeSpec(unsigned TypeSpec); |
5172 | |
5173 | /// Converts a type specifier (DeclSpec::TST) into a tag type kind. |
5174 | /// It is an error to provide a type specifier which *isn't* a tag kind here. |
5175 | static TagTypeKind getTagTypeKindForTypeSpec(unsigned TypeSpec); |
5176 | |
5177 | /// Converts a TagTypeKind into an elaborated type keyword. |
5178 | static ElaboratedTypeKeyword getKeywordForTagTypeKind(TagTypeKind Tag); |
5179 | |
5180 | /// Converts an elaborated type keyword into a TagTypeKind. |
5181 | /// It is an error to provide an elaborated type keyword |
5182 | /// which *isn't* a tag kind here. |
5183 | static TagTypeKind getTagTypeKindForKeyword(ElaboratedTypeKeyword Keyword); |
5184 | |
5185 | static bool KeywordIsTagTypeKind(ElaboratedTypeKeyword Keyword); |
5186 | |
5187 | static StringRef getKeywordName(ElaboratedTypeKeyword Keyword); |
5188 | |
5189 | static StringRef getTagTypeKindName(TagTypeKind Kind) { |
5190 | return getKeywordName(getKeywordForTagTypeKind(Kind)); |
5191 | } |
5192 | |
5193 | class CannotCastToThisType {}; |
5194 | static CannotCastToThisType classof(const Type *); |
5195 | }; |
5196 | |
5197 | /// Represents a type that was referred to using an elaborated type |
5198 | /// keyword, e.g., struct S, or via a qualified name, e.g., N::M::type, |
5199 | /// or both. |
5200 | /// |
5201 | /// This type is used to keep track of a type name as written in the |
5202 | /// source code, including tag keywords and any nested-name-specifiers. |
5203 | /// The type itself is always "sugar", used to express what was written |
5204 | /// in the source code but containing no additional semantic information. |
5205 | class ElaboratedType final |
5206 | : public TypeWithKeyword, |
5207 | public llvm::FoldingSetNode, |
5208 | private llvm::TrailingObjects<ElaboratedType, TagDecl *> { |
5209 | friend class ASTContext; // ASTContext creates these |
5210 | friend TrailingObjects; |
5211 | |
5212 | /// The nested name specifier containing the qualifier. |
5213 | NestedNameSpecifier *NNS; |
5214 | |
5215 | /// The type that this qualified name refers to. |
5216 | QualType NamedType; |
5217 | |
5218 | /// The (re)declaration of this tag type owned by this occurrence is stored |
5219 | /// as a trailing object if there is one. Use getOwnedTagDecl to obtain |
5220 | /// it, or obtain a null pointer if there is none. |
5221 | |
5222 | ElaboratedType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS, |
5223 | QualType NamedType, QualType CanonType, TagDecl *OwnedTagDecl) |
5224 | : TypeWithKeyword(Keyword, Elaborated, CanonType, |
5225 | NamedType->isDependentType(), |
5226 | NamedType->isInstantiationDependentType(), |
5227 | NamedType->isVariablyModifiedType(), |
5228 | NamedType->containsUnexpandedParameterPack()), |
5229 | NNS(NNS), NamedType(NamedType) { |
5230 | ElaboratedTypeBits.HasOwnedTagDecl = false; |
5231 | if (OwnedTagDecl) { |
5232 | ElaboratedTypeBits.HasOwnedTagDecl = true; |
5233 | *getTrailingObjects<TagDecl *>() = OwnedTagDecl; |
5234 | } |
5235 | assert(!(Keyword == ETK_None && NNS == nullptr) &&((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5237, __PRETTY_FUNCTION__)) |
5236 | "ElaboratedType cannot have elaborated type keyword "((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5237, __PRETTY_FUNCTION__)) |
5237 | "and name qualifier both null.")((!(Keyword == ETK_None && NNS == nullptr) && "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null." ) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5237, __PRETTY_FUNCTION__)); |
5238 | } |
5239 | |
5240 | public: |
5241 | /// Retrieve the qualification on this type. |
5242 | NestedNameSpecifier *getQualifier() const { return NNS; } |
5243 | |
5244 | /// Retrieve the type named by the qualified-id. |
5245 | QualType getNamedType() const { return NamedType; } |
5246 | |
5247 | /// Remove a single level of sugar. |
5248 | QualType desugar() const { return getNamedType(); } |
5249 | |
5250 | /// Returns whether this type directly provides sugar. |
5251 | bool isSugared() const { return true; } |
5252 | |
5253 | /// Return the (re)declaration of this type owned by this occurrence of this |
5254 | /// type, or nullptr if there is none. |
5255 | TagDecl *getOwnedTagDecl() const { |
5256 | return ElaboratedTypeBits.HasOwnedTagDecl ? *getTrailingObjects<TagDecl *>() |
5257 | : nullptr; |
5258 | } |
5259 | |
5260 | void Profile(llvm::FoldingSetNodeID &ID) { |
5261 | Profile(ID, getKeyword(), NNS, NamedType, getOwnedTagDecl()); |
5262 | } |
5263 | |
5264 | static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword, |
5265 | NestedNameSpecifier *NNS, QualType NamedType, |
5266 | TagDecl *OwnedTagDecl) { |
5267 | ID.AddInteger(Keyword); |
5268 | ID.AddPointer(NNS); |
5269 | NamedType.Profile(ID); |
5270 | ID.AddPointer(OwnedTagDecl); |
5271 | } |
5272 | |
5273 | static bool classof(const Type *T) { return T->getTypeClass() == Elaborated; } |
5274 | }; |
5275 | |
5276 | /// Represents a qualified type name for which the type name is |
5277 | /// dependent. |
5278 | /// |
5279 | /// DependentNameType represents a class of dependent types that involve a |
5280 | /// possibly dependent nested-name-specifier (e.g., "T::") followed by a |
5281 | /// name of a type. The DependentNameType may start with a "typename" (for a |
5282 | /// typename-specifier), "class", "struct", "union", or "enum" (for a |
5283 | /// dependent elaborated-type-specifier), or nothing (in contexts where we |
5284 | /// know that we must be referring to a type, e.g., in a base class specifier). |
5285 | /// Typically the nested-name-specifier is dependent, but in MSVC compatibility |
5286 | /// mode, this type is used with non-dependent names to delay name lookup until |
5287 | /// instantiation. |
5288 | class DependentNameType : public TypeWithKeyword, public llvm::FoldingSetNode { |
5289 | friend class ASTContext; // ASTContext creates these |
5290 | |
5291 | /// The nested name specifier containing the qualifier. |
5292 | NestedNameSpecifier *NNS; |
5293 | |
5294 | /// The type that this typename specifier refers to. |
5295 | const IdentifierInfo *Name; |
5296 | |
5297 | DependentNameType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS, |
5298 | const IdentifierInfo *Name, QualType CanonType) |
5299 | : TypeWithKeyword(Keyword, DependentName, CanonType, /*Dependent=*/true, |
5300 | /*InstantiationDependent=*/true, |
5301 | /*VariablyModified=*/false, |
5302 | NNS->containsUnexpandedParameterPack()), |
5303 | NNS(NNS), Name(Name) {} |
5304 | |
5305 | public: |
5306 | /// Retrieve the qualification on this type. |
5307 | NestedNameSpecifier *getQualifier() const { return NNS; } |
5308 | |
5309 | /// Retrieve the type named by the typename specifier as an identifier. |
5310 | /// |
5311 | /// This routine will return a non-NULL identifier pointer when the |
5312 | /// form of the original typename was terminated by an identifier, |
5313 | /// e.g., "typename T::type". |
5314 | const IdentifierInfo *getIdentifier() const { |
5315 | return Name; |
5316 | } |
5317 | |
5318 | bool isSugared() const { return false; } |
5319 | QualType desugar() const { return QualType(this, 0); } |
5320 | |
5321 | void Profile(llvm::FoldingSetNodeID &ID) { |
5322 | Profile(ID, getKeyword(), NNS, Name); |
5323 | } |
5324 | |
5325 | static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword, |
5326 | NestedNameSpecifier *NNS, const IdentifierInfo *Name) { |
5327 | ID.AddInteger(Keyword); |
5328 | ID.AddPointer(NNS); |
5329 | ID.AddPointer(Name); |
5330 | } |
5331 | |
5332 | static bool classof(const Type *T) { |
5333 | return T->getTypeClass() == DependentName; |
5334 | } |
5335 | }; |
5336 | |
5337 | /// Represents a template specialization type whose template cannot be |
5338 | /// resolved, e.g. |
5339 | /// A<T>::template B<T> |
5340 | class alignas(8) DependentTemplateSpecializationType |
5341 | : public TypeWithKeyword, |
5342 | public llvm::FoldingSetNode { |
5343 | friend class ASTContext; // ASTContext creates these |
5344 | |
5345 | /// The nested name specifier containing the qualifier. |
5346 | NestedNameSpecifier *NNS; |
5347 | |
5348 | /// The identifier of the template. |
5349 | const IdentifierInfo *Name; |
5350 | |
5351 | DependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, |
5352 | NestedNameSpecifier *NNS, |
5353 | const IdentifierInfo *Name, |
5354 | ArrayRef<TemplateArgument> Args, |
5355 | QualType Canon); |
5356 | |
5357 | const TemplateArgument *getArgBuffer() const { |
5358 | return reinterpret_cast<const TemplateArgument*>(this+1); |
5359 | } |
5360 | |
5361 | TemplateArgument *getArgBuffer() { |
5362 | return reinterpret_cast<TemplateArgument*>(this+1); |
5363 | } |
5364 | |
5365 | public: |
5366 | NestedNameSpecifier *getQualifier() const { return NNS; } |
5367 | const IdentifierInfo *getIdentifier() const { return Name; } |
5368 | |
5369 | /// Retrieve the template arguments. |
5370 | const TemplateArgument *getArgs() const { |
5371 | return getArgBuffer(); |
5372 | } |
5373 | |
5374 | /// Retrieve the number of template arguments. |
5375 | unsigned getNumArgs() const { |
5376 | return DependentTemplateSpecializationTypeBits.NumArgs; |
5377 | } |
5378 | |
5379 | const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h |
5380 | |
5381 | ArrayRef<TemplateArgument> template_arguments() const { |
5382 | return {getArgs(), getNumArgs()}; |
5383 | } |
5384 | |
5385 | using iterator = const TemplateArgument *; |
5386 | |
5387 | iterator begin() const { return getArgs(); } |
5388 | iterator end() const; // inline in TemplateBase.h |
5389 | |
5390 | bool isSugared() const { return false; } |
5391 | QualType desugar() const { return QualType(this, 0); } |
5392 | |
5393 | void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) { |
5394 | Profile(ID, Context, getKeyword(), NNS, Name, {getArgs(), getNumArgs()}); |
5395 | } |
5396 | |
5397 | static void Profile(llvm::FoldingSetNodeID &ID, |
5398 | const ASTContext &Context, |
5399 | ElaboratedTypeKeyword Keyword, |
5400 | NestedNameSpecifier *Qualifier, |
5401 | const IdentifierInfo *Name, |
5402 | ArrayRef<TemplateArgument> Args); |
5403 | |
5404 | static bool classof(const Type *T) { |
5405 | return T->getTypeClass() == DependentTemplateSpecialization; |
5406 | } |
5407 | }; |
5408 | |
5409 | /// Represents a pack expansion of types. |
5410 | /// |
5411 | /// Pack expansions are part of C++11 variadic templates. A pack |
5412 | /// expansion contains a pattern, which itself contains one or more |
5413 | /// "unexpanded" parameter packs. When instantiated, a pack expansion |
5414 | /// produces a series of types, each instantiated from the pattern of |
5415 | /// the expansion, where the Ith instantiation of the pattern uses the |
5416 | /// Ith arguments bound to each of the unexpanded parameter packs. The |
5417 | /// pack expansion is considered to "expand" these unexpanded |
5418 | /// parameter packs. |
5419 | /// |
5420 | /// \code |
5421 | /// template<typename ...Types> struct tuple; |
5422 | /// |
5423 | /// template<typename ...Types> |
5424 | /// struct tuple_of_references { |
5425 | /// typedef tuple<Types&...> type; |
5426 | /// }; |
5427 | /// \endcode |
5428 | /// |
5429 | /// Here, the pack expansion \c Types&... is represented via a |
5430 | /// PackExpansionType whose pattern is Types&. |
5431 | class PackExpansionType : public Type, public llvm::FoldingSetNode { |
5432 | friend class ASTContext; // ASTContext creates these |
5433 | |
5434 | /// The pattern of the pack expansion. |
5435 | QualType Pattern; |
5436 | |
5437 | PackExpansionType(QualType Pattern, QualType Canon, |
5438 | Optional<unsigned> NumExpansions) |
5439 | : Type(PackExpansion, Canon, /*Dependent=*/Pattern->isDependentType(), |
5440 | /*InstantiationDependent=*/true, |
5441 | /*VariablyModified=*/Pattern->isVariablyModifiedType(), |
5442 | /*ContainsUnexpandedParameterPack=*/false), |
5443 | Pattern(Pattern) { |
5444 | PackExpansionTypeBits.NumExpansions = |
5445 | NumExpansions ? *NumExpansions + 1 : 0; |
5446 | } |
5447 | |
5448 | public: |
5449 | /// Retrieve the pattern of this pack expansion, which is the |
5450 | /// type that will be repeatedly instantiated when instantiating the |
5451 | /// pack expansion itself. |
5452 | QualType getPattern() const { return Pattern; } |
5453 | |
5454 | /// Retrieve the number of expansions that this pack expansion will |
5455 | /// generate, if known. |
5456 | Optional<unsigned> getNumExpansions() const { |
5457 | if (PackExpansionTypeBits.NumExpansions) |
5458 | return PackExpansionTypeBits.NumExpansions - 1; |
5459 | return None; |
5460 | } |
5461 | |
5462 | bool isSugared() const { return !Pattern->isDependentType(); } |
5463 | QualType desugar() const { return isSugared() ? Pattern : QualType(this, 0); } |
5464 | |
5465 | void Profile(llvm::FoldingSetNodeID &ID) { |
5466 | Profile(ID, getPattern(), getNumExpansions()); |
5467 | } |
5468 | |
5469 | static void Profile(llvm::FoldingSetNodeID &ID, QualType Pattern, |
5470 | Optional<unsigned> NumExpansions) { |
5471 | ID.AddPointer(Pattern.getAsOpaquePtr()); |
5472 | ID.AddBoolean(NumExpansions.hasValue()); |
5473 | if (NumExpansions) |
5474 | ID.AddInteger(*NumExpansions); |
5475 | } |
5476 | |
5477 | static bool classof(const Type *T) { |
5478 | return T->getTypeClass() == PackExpansion; |
5479 | } |
5480 | }; |
5481 | |
5482 | /// This class wraps the list of protocol qualifiers. For types that can |
5483 | /// take ObjC protocol qualifers, they can subclass this class. |
5484 | template <class T> |
5485 | class ObjCProtocolQualifiers { |
5486 | protected: |
5487 | ObjCProtocolQualifiers() = default; |
5488 | |
5489 | ObjCProtocolDecl * const *getProtocolStorage() const { |
5490 | return const_cast<ObjCProtocolQualifiers*>(this)->getProtocolStorage(); |
5491 | } |
5492 | |
5493 | ObjCProtocolDecl **getProtocolStorage() { |
5494 | return static_cast<T*>(this)->getProtocolStorageImpl(); |
5495 | } |
5496 | |
5497 | void setNumProtocols(unsigned N) { |
5498 | static_cast<T*>(this)->setNumProtocolsImpl(N); |
5499 | } |
5500 | |
5501 | void initialize(ArrayRef<ObjCProtocolDecl *> protocols) { |
5502 | setNumProtocols(protocols.size()); |
5503 | assert(getNumProtocols() == protocols.size() &&((getNumProtocols() == protocols.size() && "bitfield overflow in protocol count" ) ? static_cast<void> (0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5504, __PRETTY_FUNCTION__)) |
5504 | "bitfield overflow in protocol count")((getNumProtocols() == protocols.size() && "bitfield overflow in protocol count" ) ? static_cast<void> (0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5504, __PRETTY_FUNCTION__)); |
5505 | if (!protocols.empty()) |
5506 | memcpy(getProtocolStorage(), protocols.data(), |
5507 | protocols.size() * sizeof(ObjCProtocolDecl*)); |
5508 | } |
5509 | |
5510 | public: |
5511 | using qual_iterator = ObjCProtocolDecl * const *; |
5512 | using qual_range = llvm::iterator_range<qual_iterator>; |
5513 | |
5514 | qual_range quals() const { return qual_range(qual_begin(), qual_end()); } |
5515 | qual_iterator qual_begin() const { return getProtocolStorage(); } |
5516 | qual_iterator qual_end() const { return qual_begin() + getNumProtocols(); } |
5517 | |
5518 | bool qual_empty() const { return getNumProtocols() == 0; } |
5519 | |
5520 | /// Return the number of qualifying protocols in this type, or 0 if |
5521 | /// there are none. |
5522 | unsigned getNumProtocols() const { |
5523 | return static_cast<const T*>(this)->getNumProtocolsImpl(); |
5524 | } |
5525 | |
5526 | /// Fetch a protocol by index. |
5527 | ObjCProtocolDecl *getProtocol(unsigned I) const { |
5528 | assert(I < getNumProtocols() && "Out-of-range protocol access")((I < getNumProtocols() && "Out-of-range protocol access" ) ? static_cast<void> (0) : __assert_fail ("I < getNumProtocols() && \"Out-of-range protocol access\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5528, __PRETTY_FUNCTION__)); |
5529 | return qual_begin()[I]; |
5530 | } |
5531 | |
5532 | /// Retrieve all of the protocol qualifiers. |
5533 | ArrayRef<ObjCProtocolDecl *> getProtocols() const { |
5534 | return ArrayRef<ObjCProtocolDecl *>(qual_begin(), getNumProtocols()); |
5535 | } |
5536 | }; |
5537 | |
5538 | /// Represents a type parameter type in Objective C. It can take |
5539 | /// a list of protocols. |
5540 | class ObjCTypeParamType : public Type, |
5541 | public ObjCProtocolQualifiers<ObjCTypeParamType>, |
5542 | public llvm::FoldingSetNode { |
5543 | friend class ASTContext; |
5544 | friend class ObjCProtocolQualifiers<ObjCTypeParamType>; |
5545 | |
5546 | /// The number of protocols stored on this type. |
5547 | unsigned NumProtocols : 6; |
5548 | |
5549 | ObjCTypeParamDecl *OTPDecl; |
5550 | |
5551 | /// The protocols are stored after the ObjCTypeParamType node. In the |
5552 | /// canonical type, the list of protocols are sorted alphabetically |
5553 | /// and uniqued. |
5554 | ObjCProtocolDecl **getProtocolStorageImpl(); |
5555 | |
5556 | /// Return the number of qualifying protocols in this interface type, |
5557 | /// or 0 if there are none. |
5558 | unsigned getNumProtocolsImpl() const { |
5559 | return NumProtocols; |
5560 | } |
5561 | |
5562 | void setNumProtocolsImpl(unsigned N) { |
5563 | NumProtocols = N; |
5564 | } |
5565 | |
5566 | ObjCTypeParamType(const ObjCTypeParamDecl *D, |
5567 | QualType can, |
5568 | ArrayRef<ObjCProtocolDecl *> protocols); |
5569 | |
5570 | public: |
5571 | bool isSugared() const { return true; } |
5572 | QualType desugar() const { return getCanonicalTypeInternal(); } |
5573 | |
5574 | static bool classof(const Type *T) { |
5575 | return T->getTypeClass() == ObjCTypeParam; |
5576 | } |
5577 | |
5578 | void Profile(llvm::FoldingSetNodeID &ID); |
5579 | static void Profile(llvm::FoldingSetNodeID &ID, |
5580 | const ObjCTypeParamDecl *OTPDecl, |
5581 | ArrayRef<ObjCProtocolDecl *> protocols); |
5582 | |
5583 | ObjCTypeParamDecl *getDecl() const { return OTPDecl; } |
5584 | }; |
5585 | |
5586 | /// Represents a class type in Objective C. |
5587 | /// |
5588 | /// Every Objective C type is a combination of a base type, a set of |
5589 | /// type arguments (optional, for parameterized classes) and a list of |
5590 | /// protocols. |
5591 | /// |
5592 | /// Given the following declarations: |
5593 | /// \code |
5594 | /// \@class C<T>; |
5595 | /// \@protocol P; |
5596 | /// \endcode |
5597 | /// |
5598 | /// 'C' is an ObjCInterfaceType C. It is sugar for an ObjCObjectType |
5599 | /// with base C and no protocols. |
5600 | /// |
5601 | /// 'C<P>' is an unspecialized ObjCObjectType with base C and protocol list [P]. |
5602 | /// 'C<C*>' is a specialized ObjCObjectType with type arguments 'C*' and no |
5603 | /// protocol list. |
5604 | /// 'C<C*><P>' is a specialized ObjCObjectType with base C, type arguments 'C*', |
5605 | /// and protocol list [P]. |
5606 | /// |
5607 | /// 'id' is a TypedefType which is sugar for an ObjCObjectPointerType whose |
5608 | /// pointee is an ObjCObjectType with base BuiltinType::ObjCIdType |
5609 | /// and no protocols. |
5610 | /// |
5611 | /// 'id<P>' is an ObjCObjectPointerType whose pointee is an ObjCObjectType |
5612 | /// with base BuiltinType::ObjCIdType and protocol list [P]. Eventually |
5613 | /// this should get its own sugar class to better represent the source. |
5614 | class ObjCObjectType : public Type, |
5615 | public ObjCProtocolQualifiers<ObjCObjectType> { |
5616 | friend class ObjCProtocolQualifiers<ObjCObjectType>; |
5617 | |
5618 | // ObjCObjectType.NumTypeArgs - the number of type arguments stored |
5619 | // after the ObjCObjectPointerType node. |
5620 | // ObjCObjectType.NumProtocols - the number of protocols stored |
5621 | // after the type arguments of ObjCObjectPointerType node. |
5622 | // |
5623 | // These protocols are those written directly on the type. If |
5624 | // protocol qualifiers ever become additive, the iterators will need |
5625 | // to get kindof complicated. |
5626 | // |
5627 | // In the canonical object type, these are sorted alphabetically |
5628 | // and uniqued. |
5629 | |
5630 | /// Either a BuiltinType or an InterfaceType or sugar for either. |
5631 | QualType BaseType; |
5632 | |
5633 | /// Cached superclass type. |
5634 | mutable llvm::PointerIntPair<const ObjCObjectType *, 1, bool> |
5635 | CachedSuperClassType; |
5636 | |
5637 | QualType *getTypeArgStorage(); |
5638 | const QualType *getTypeArgStorage() const { |
5639 | return const_cast<ObjCObjectType *>(this)->getTypeArgStorage(); |
5640 | } |
5641 | |
5642 | ObjCProtocolDecl **getProtocolStorageImpl(); |
5643 | /// Return the number of qualifying protocols in this interface type, |
5644 | /// or 0 if there are none. |
5645 | unsigned getNumProtocolsImpl() const { |
5646 | return ObjCObjectTypeBits.NumProtocols; |
5647 | } |
5648 | void setNumProtocolsImpl(unsigned N) { |
5649 | ObjCObjectTypeBits.NumProtocols = N; |
5650 | } |
5651 | |
5652 | protected: |
5653 | enum Nonce_ObjCInterface { Nonce_ObjCInterface }; |
5654 | |
5655 | ObjCObjectType(QualType Canonical, QualType Base, |
5656 | ArrayRef<QualType> typeArgs, |
5657 | ArrayRef<ObjCProtocolDecl *> protocols, |
5658 | bool isKindOf); |
5659 | |
5660 | ObjCObjectType(enum Nonce_ObjCInterface) |
5661 | : Type(ObjCInterface, QualType(), false, false, false, false), |
5662 | BaseType(QualType(this_(), 0)) { |
5663 | ObjCObjectTypeBits.NumProtocols = 0; |
5664 | ObjCObjectTypeBits.NumTypeArgs = 0; |
5665 | ObjCObjectTypeBits.IsKindOf = 0; |
5666 | } |
5667 | |
5668 | void computeSuperClassTypeSlow() const; |
5669 | |
5670 | public: |
5671 | /// Gets the base type of this object type. This is always (possibly |
5672 | /// sugar for) one of: |
5673 | /// - the 'id' builtin type (as opposed to the 'id' type visible to the |
5674 | /// user, which is a typedef for an ObjCObjectPointerType) |
5675 | /// - the 'Class' builtin type (same caveat) |
5676 | /// - an ObjCObjectType (currently always an ObjCInterfaceType) |
5677 | QualType getBaseType() const { return BaseType; } |
5678 | |
5679 | bool isObjCId() const { |
5680 | return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCId); |
5681 | } |
5682 | |
5683 | bool isObjCClass() const { |
5684 | return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCClass); |
5685 | } |
5686 | |
5687 | bool isObjCUnqualifiedId() const { return qual_empty() && isObjCId(); } |
5688 | bool isObjCUnqualifiedClass() const { return qual_empty() && isObjCClass(); } |
5689 | bool isObjCUnqualifiedIdOrClass() const { |
5690 | if (!qual_empty()) return false; |
5691 | if (const BuiltinType *T = getBaseType()->getAs<BuiltinType>()) |
5692 | return T->getKind() == BuiltinType::ObjCId || |
5693 | T->getKind() == BuiltinType::ObjCClass; |
5694 | return false; |
5695 | } |
5696 | bool isObjCQualifiedId() const { return !qual_empty() && isObjCId(); } |
5697 | bool isObjCQualifiedClass() const { return !qual_empty() && isObjCClass(); } |
5698 | |
5699 | /// Gets the interface declaration for this object type, if the base type |
5700 | /// really is an interface. |
5701 | ObjCInterfaceDecl *getInterface() const; |
5702 | |
5703 | /// Determine whether this object type is "specialized", meaning |
5704 | /// that it has type arguments. |
5705 | bool isSpecialized() const; |
5706 | |
5707 | /// Determine whether this object type was written with type arguments. |
5708 | bool isSpecializedAsWritten() const { |
5709 | return ObjCObjectTypeBits.NumTypeArgs > 0; |
5710 | } |
5711 | |
5712 | /// Determine whether this object type is "unspecialized", meaning |
5713 | /// that it has no type arguments. |
5714 | bool isUnspecialized() const { return !isSpecialized(); } |
5715 | |
5716 | /// Determine whether this object type is "unspecialized" as |
5717 | /// written, meaning that it has no type arguments. |
5718 | bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); } |
5719 | |
5720 | /// Retrieve the type arguments of this object type (semantically). |
5721 | ArrayRef<QualType> getTypeArgs() const; |
5722 | |
5723 | /// Retrieve the type arguments of this object type as they were |
5724 | /// written. |
5725 | ArrayRef<QualType> getTypeArgsAsWritten() const { |
5726 | return llvm::makeArrayRef(getTypeArgStorage(), |
5727 | ObjCObjectTypeBits.NumTypeArgs); |
5728 | } |
5729 | |
5730 | /// Whether this is a "__kindof" type as written. |
5731 | bool isKindOfTypeAsWritten() const { return ObjCObjectTypeBits.IsKindOf; } |
5732 | |
5733 | /// Whether this ia a "__kindof" type (semantically). |
5734 | bool isKindOfType() const; |
5735 | |
5736 | /// Retrieve the type of the superclass of this object type. |
5737 | /// |
5738 | /// This operation substitutes any type arguments into the |
5739 | /// superclass of the current class type, potentially producing a |
5740 | /// specialization of the superclass type. Produces a null type if |
5741 | /// there is no superclass. |
5742 | QualType getSuperClassType() const { |
5743 | if (!CachedSuperClassType.getInt()) |
5744 | computeSuperClassTypeSlow(); |
5745 | |
5746 | assert(CachedSuperClassType.getInt() && "Superclass not set?")((CachedSuperClassType.getInt() && "Superclass not set?" ) ? static_cast<void> (0) : __assert_fail ("CachedSuperClassType.getInt() && \"Superclass not set?\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 5746, __PRETTY_FUNCTION__)); |
5747 | return QualType(CachedSuperClassType.getPointer(), 0); |
5748 | } |
5749 | |
5750 | /// Strip off the Objective-C "kindof" type and (with it) any |
5751 | /// protocol qualifiers. |
5752 | QualType stripObjCKindOfTypeAndQuals(const ASTContext &ctx) const; |
5753 | |
5754 | bool isSugared() const { return false; } |
5755 | QualType desugar() const { return QualType(this, 0); } |
5756 | |
5757 | static bool classof(const Type *T) { |
5758 | return T->getTypeClass() == ObjCObject || |
5759 | T->getTypeClass() == ObjCInterface; |
5760 | } |
5761 | }; |
5762 | |
5763 | /// A class providing a concrete implementation |
5764 | /// of ObjCObjectType, so as to not increase the footprint of |
5765 | /// ObjCInterfaceType. Code outside of ASTContext and the core type |
5766 | /// system should not reference this type. |
5767 | class ObjCObjectTypeImpl : public ObjCObjectType, public llvm::FoldingSetNode { |
5768 | friend class ASTContext; |
5769 | |
5770 | // If anyone adds fields here, ObjCObjectType::getProtocolStorage() |
5771 | // will need to be modified. |
5772 | |
5773 | ObjCObjectTypeImpl(QualType Canonical, QualType Base, |
5774 | ArrayRef<QualType> typeArgs, |
5775 | ArrayRef<ObjCProtocolDecl *> protocols, |
5776 | bool isKindOf) |
5777 | : ObjCObjectType(Canonical, Base, typeArgs, protocols, isKindOf) {} |
5778 | |
5779 | public: |
5780 | void Profile(llvm::FoldingSetNodeID &ID); |
5781 | static void Profile(llvm::FoldingSetNodeID &ID, |
5782 | QualType Base, |
5783 | ArrayRef<QualType> typeArgs, |
5784 | ArrayRef<ObjCProtocolDecl *> protocols, |
5785 | bool isKindOf); |
5786 | }; |
5787 | |
5788 | inline QualType *ObjCObjectType::getTypeArgStorage() { |
5789 | return reinterpret_cast<QualType *>(static_cast<ObjCObjectTypeImpl*>(this)+1); |
5790 | } |
5791 | |
5792 | inline ObjCProtocolDecl **ObjCObjectType::getProtocolStorageImpl() { |
5793 | return reinterpret_cast<ObjCProtocolDecl**>( |
5794 | getTypeArgStorage() + ObjCObjectTypeBits.NumTypeArgs); |
5795 | } |
5796 | |
5797 | inline ObjCProtocolDecl **ObjCTypeParamType::getProtocolStorageImpl() { |
5798 | return reinterpret_cast<ObjCProtocolDecl**>( |
5799 | static_cast<ObjCTypeParamType*>(this)+1); |
5800 | } |
5801 | |
5802 | /// Interfaces are the core concept in Objective-C for object oriented design. |
5803 | /// They basically correspond to C++ classes. There are two kinds of interface |
5804 | /// types: normal interfaces like `NSString`, and qualified interfaces, which |
5805 | /// are qualified with a protocol list like `NSString<NSCopyable, NSAmazing>`. |
5806 | /// |
5807 | /// ObjCInterfaceType guarantees the following properties when considered |
5808 | /// as a subtype of its superclass, ObjCObjectType: |
5809 | /// - There are no protocol qualifiers. To reinforce this, code which |
5810 | /// tries to invoke the protocol methods via an ObjCInterfaceType will |
5811 | /// fail to compile. |
5812 | /// - It is its own base type. That is, if T is an ObjCInterfaceType*, |
5813 | /// T->getBaseType() == QualType(T, 0). |
5814 | class ObjCInterfaceType : public ObjCObjectType { |
5815 | friend class ASTContext; // ASTContext creates these. |
5816 | friend class ASTReader; |
5817 | friend class ObjCInterfaceDecl; |
5818 | |
5819 | mutable ObjCInterfaceDecl *Decl; |
5820 | |
5821 | ObjCInterfaceType(const ObjCInterfaceDecl *D) |
5822 | : ObjCObjectType(Nonce_ObjCInterface), |
5823 | Decl(const_cast<ObjCInterfaceDecl*>(D)) {} |
5824 | |
5825 | public: |
5826 | /// Get the declaration of this interface. |
5827 | ObjCInterfaceDecl *getDecl() const { return Decl; } |
5828 | |
5829 | bool isSugared() const { return false; } |
5830 | QualType desugar() const { return QualType(this, 0); } |
5831 | |
5832 | static bool classof(const Type *T) { |
5833 | return T->getTypeClass() == ObjCInterface; |
5834 | } |
5835 | |
5836 | // Nonsense to "hide" certain members of ObjCObjectType within this |
5837 | // class. People asking for protocols on an ObjCInterfaceType are |
5838 | // not going to get what they want: ObjCInterfaceTypes are |
5839 | // guaranteed to have no protocols. |
5840 | enum { |
5841 | qual_iterator, |
5842 | qual_begin, |
5843 | qual_end, |
5844 | getNumProtocols, |
5845 | getProtocol |
5846 | }; |
5847 | }; |
5848 | |
5849 | inline ObjCInterfaceDecl *ObjCObjectType::getInterface() const { |
5850 | QualType baseType = getBaseType(); |
5851 | while (const auto *ObjT = baseType->getAs<ObjCObjectType>()) { |
5852 | if (const auto *T = dyn_cast<ObjCInterfaceType>(ObjT)) |
5853 | return T->getDecl(); |
5854 | |
5855 | baseType = ObjT->getBaseType(); |
5856 | } |
5857 | |
5858 | return nullptr; |
5859 | } |
5860 | |
5861 | /// Represents a pointer to an Objective C object. |
5862 | /// |
5863 | /// These are constructed from pointer declarators when the pointee type is |
5864 | /// an ObjCObjectType (or sugar for one). In addition, the 'id' and 'Class' |
5865 | /// types are typedefs for these, and the protocol-qualified types 'id<P>' |
5866 | /// and 'Class<P>' are translated into these. |
5867 | /// |
5868 | /// Pointers to pointers to Objective C objects are still PointerTypes; |
5869 | /// only the first level of pointer gets it own type implementation. |
5870 | class ObjCObjectPointerType : public Type, public llvm::FoldingSetNode { |
5871 | friend class ASTContext; // ASTContext creates these. |
5872 | |
5873 | QualType PointeeType; |
5874 | |
5875 | ObjCObjectPointerType(QualType Canonical, QualType Pointee) |
5876 | : Type(ObjCObjectPointer, Canonical, |
5877 | Pointee->isDependentType(), |
5878 | Pointee->isInstantiationDependentType(), |
5879 | Pointee->isVariablyModifiedType(), |
5880 | Pointee->containsUnexpandedParameterPack()), |
5881 | PointeeType(Pointee) {} |
5882 | |
5883 | public: |
5884 | /// Gets the type pointed to by this ObjC pointer. |
5885 | /// The result will always be an ObjCObjectType or sugar thereof. |
5886 | QualType getPointeeType() const { return PointeeType; } |
5887 | |
5888 | /// Gets the type pointed to by this ObjC pointer. Always returns non-null. |
5889 | /// |
5890 | /// This method is equivalent to getPointeeType() except that |
5891 | /// it discards any typedefs (or other sugar) between this |
5892 | /// type and the "outermost" object type. So for: |
5893 | /// \code |
5894 | /// \@class A; \@protocol P; \@protocol Q; |
5895 | /// typedef A<P> AP; |
5896 | /// typedef A A1; |
5897 | /// typedef A1<P> A1P; |
5898 | /// typedef A1P<Q> A1PQ; |
5899 | /// \endcode |
5900 | /// For 'A*', getObjectType() will return 'A'. |
5901 | /// For 'A<P>*', getObjectType() will return 'A<P>'. |
5902 | /// For 'AP*', getObjectType() will return 'A<P>'. |
5903 | /// For 'A1*', getObjectType() will return 'A'. |
5904 | /// For 'A1<P>*', getObjectType() will return 'A1<P>'. |
5905 | /// For 'A1P*', getObjectType() will return 'A1<P>'. |
5906 | /// For 'A1PQ*', getObjectType() will return 'A1<Q>', because |
5907 | /// adding protocols to a protocol-qualified base discards the |
5908 | /// old qualifiers (for now). But if it didn't, getObjectType() |
5909 | /// would return 'A1P<Q>' (and we'd have to make iterating over |
5910 | /// qualifiers more complicated). |
5911 | const ObjCObjectType *getObjectType() const { |
5912 | return PointeeType->castAs<ObjCObjectType>(); |
5913 | } |
5914 | |
5915 | /// If this pointer points to an Objective C |
5916 | /// \@interface type, gets the type for that interface. Any protocol |
5917 | /// qualifiers on the interface are ignored. |
5918 | /// |
5919 | /// \return null if the base type for this pointer is 'id' or 'Class' |
5920 | const ObjCInterfaceType *getInterfaceType() const; |
5921 | |
5922 | /// If this pointer points to an Objective \@interface |
5923 | /// type, gets the declaration for that interface. |
5924 | /// |
5925 | /// \return null if the base type for this pointer is 'id' or 'Class' |
5926 | ObjCInterfaceDecl *getInterfaceDecl() const { |
5927 | return getObjectType()->getInterface(); |
5928 | } |
5929 | |
5930 | /// True if this is equivalent to the 'id' type, i.e. if |
5931 | /// its object type is the primitive 'id' type with no protocols. |
5932 | bool isObjCIdType() const { |
5933 | return getObjectType()->isObjCUnqualifiedId(); |
5934 | } |
5935 | |
5936 | /// True if this is equivalent to the 'Class' type, |
5937 | /// i.e. if its object tive is the primitive 'Class' type with no protocols. |
5938 | bool isObjCClassType() const { |
5939 | return getObjectType()->isObjCUnqualifiedClass(); |
5940 | } |
5941 | |
5942 | /// True if this is equivalent to the 'id' or 'Class' type, |
5943 | bool isObjCIdOrClassType() const { |
5944 | return getObjectType()->isObjCUnqualifiedIdOrClass(); |
5945 | } |
5946 | |
5947 | /// True if this is equivalent to 'id<P>' for some non-empty set of |
5948 | /// protocols. |
5949 | bool isObjCQualifiedIdType() const { |
5950 | return getObjectType()->isObjCQualifiedId(); |
5951 | } |
5952 | |
5953 | /// True if this is equivalent to 'Class<P>' for some non-empty set of |
5954 | /// protocols. |
5955 | bool isObjCQualifiedClassType() const { |
5956 | return getObjectType()->isObjCQualifiedClass(); |
5957 | } |
5958 | |
5959 | /// Whether this is a "__kindof" type. |
5960 | bool isKindOfType() const { return getObjectType()->isKindOfType(); } |
5961 | |
5962 | /// Whether this type is specialized, meaning that it has type arguments. |
5963 | bool isSpecialized() const { return getObjectType()->isSpecialized(); } |
5964 | |
5965 | /// Whether this type is specialized, meaning that it has type arguments. |
5966 | bool isSpecializedAsWritten() const { |
5967 | return getObjectType()->isSpecializedAsWritten(); |
5968 | } |
5969 | |
5970 | /// Whether this type is unspecialized, meaning that is has no type arguments. |
5971 | bool isUnspecialized() const { return getObjectType()->isUnspecialized(); } |
5972 | |
5973 | /// Determine whether this object type is "unspecialized" as |
5974 | /// written, meaning that it has no type arguments. |
5975 | bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); } |
5976 | |
5977 | /// Retrieve the type arguments for this type. |
5978 | ArrayRef<QualType> getTypeArgs() const { |
5979 | return getObjectType()->getTypeArgs(); |
5980 | } |
5981 | |
5982 | /// Retrieve the type arguments for this type. |
5983 | ArrayRef<QualType> getTypeArgsAsWritten() const { |
5984 | return getObjectType()->getTypeArgsAsWritten(); |
5985 | } |
5986 | |
5987 | /// An iterator over the qualifiers on the object type. Provided |
5988 | /// for convenience. This will always iterate over the full set of |
5989 | /// protocols on a type, not just those provided directly. |
5990 | using qual_iterator = ObjCObjectType::qual_iterator; |
5991 | using qual_range = llvm::iterator_range<qual_iterator>; |
5992 | |
5993 | qual_range quals() const { return qual_range(qual_begin(), qual_end()); } |
5994 | |
5995 | qual_iterator qual_begin() const { |
5996 | return getObjectType()->qual_begin(); |
5997 | } |
5998 | |
5999 | qual_iterator qual_end() const { |
6000 | return getObjectType()->qual_end(); |
6001 | } |
6002 | |
6003 | bool qual_empty() const { return getObjectType()->qual_empty(); } |
6004 | |
6005 | /// Return the number of qualifying protocols on the object type. |
6006 | unsigned getNumProtocols() const { |
6007 | return getObjectType()->getNumProtocols(); |
6008 | } |
6009 | |
6010 | /// Retrieve a qualifying protocol by index on the object type. |
6011 | ObjCProtocolDecl *getProtocol(unsigned I) const { |
6012 | return getObjectType()->getProtocol(I); |
6013 | } |
6014 | |
6015 | bool isSugared() const { return false; } |
6016 | QualType desugar() const { return QualType(this, 0); } |
6017 | |
6018 | /// Retrieve the type of the superclass of this object pointer type. |
6019 | /// |
6020 | /// This operation substitutes any type arguments into the |
6021 | /// superclass of the current class type, potentially producing a |
6022 | /// pointer to a specialization of the superclass type. Produces a |
6023 | /// null type if there is no superclass. |
6024 | QualType getSuperClassType() const; |
6025 | |
6026 | /// Strip off the Objective-C "kindof" type and (with it) any |
6027 | /// protocol qualifiers. |
6028 | const ObjCObjectPointerType *stripObjCKindOfTypeAndQuals( |
6029 | const ASTContext &ctx) const; |
6030 | |
6031 | void Profile(llvm::FoldingSetNodeID &ID) { |
6032 | Profile(ID, getPointeeType()); |
6033 | } |
6034 | |
6035 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T) { |
6036 | ID.AddPointer(T.getAsOpaquePtr()); |
6037 | } |
6038 | |
6039 | static bool classof(const Type *T) { |
6040 | return T->getTypeClass() == ObjCObjectPointer; |
6041 | } |
6042 | }; |
6043 | |
6044 | class AtomicType : public Type, public llvm::FoldingSetNode { |
6045 | friend class ASTContext; // ASTContext creates these. |
6046 | |
6047 | QualType ValueType; |
6048 | |
6049 | AtomicType(QualType ValTy, QualType Canonical) |
6050 | : Type(Atomic, Canonical, ValTy->isDependentType(), |
6051 | ValTy->isInstantiationDependentType(), |
6052 | ValTy->isVariablyModifiedType(), |
6053 | ValTy->containsUnexpandedParameterPack()), |
6054 | ValueType(ValTy) {} |
6055 | |
6056 | public: |
6057 | /// Gets the type contained by this atomic type, i.e. |
6058 | /// the type returned by performing an atomic load of this atomic type. |
6059 | QualType getValueType() const { return ValueType; } |
6060 | |
6061 | bool isSugared() const { return false; } |
6062 | QualType desugar() const { return QualType(this, 0); } |
6063 | |
6064 | void Profile(llvm::FoldingSetNodeID &ID) { |
6065 | Profile(ID, getValueType()); |
6066 | } |
6067 | |
6068 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T) { |
6069 | ID.AddPointer(T.getAsOpaquePtr()); |
6070 | } |
6071 | |
6072 | static bool classof(const Type *T) { |
6073 | return T->getTypeClass() == Atomic; |
6074 | } |
6075 | }; |
6076 | |
6077 | /// PipeType - OpenCL20. |
6078 | class PipeType : public Type, public llvm::FoldingSetNode { |
6079 | friend class ASTContext; // ASTContext creates these. |
6080 | |
6081 | QualType ElementType; |
6082 | bool isRead; |
6083 | |
6084 | PipeType(QualType elemType, QualType CanonicalPtr, bool isRead) |
6085 | : Type(Pipe, CanonicalPtr, elemType->isDependentType(), |
6086 | elemType->isInstantiationDependentType(), |
6087 | elemType->isVariablyModifiedType(), |
6088 | elemType->containsUnexpandedParameterPack()), |
6089 | ElementType(elemType), isRead(isRead) {} |
6090 | |
6091 | public: |
6092 | QualType getElementType() const { return ElementType; } |
6093 | |
6094 | bool isSugared() const { return false; } |
6095 | |
6096 | QualType desugar() const { return QualType(this, 0); } |
6097 | |
6098 | void Profile(llvm::FoldingSetNodeID &ID) { |
6099 | Profile(ID, getElementType(), isReadOnly()); |
6100 | } |
6101 | |
6102 | static void Profile(llvm::FoldingSetNodeID &ID, QualType T, bool isRead) { |
6103 | ID.AddPointer(T.getAsOpaquePtr()); |
6104 | ID.AddBoolean(isRead); |
6105 | } |
6106 | |
6107 | static bool classof(const Type *T) { |
6108 | return T->getTypeClass() == Pipe; |
6109 | } |
6110 | |
6111 | bool isReadOnly() const { return isRead; } |
6112 | }; |
6113 | |
6114 | /// A qualifier set is used to build a set of qualifiers. |
6115 | class QualifierCollector : public Qualifiers { |
6116 | public: |
6117 | QualifierCollector(Qualifiers Qs = Qualifiers()) : Qualifiers(Qs) {} |
6118 | |
6119 | /// Collect any qualifiers on the given type and return an |
6120 | /// unqualified type. The qualifiers are assumed to be consistent |
6121 | /// with those already in the type. |
6122 | const Type *strip(QualType type) { |
6123 | addFastQualifiers(type.getLocalFastQualifiers()); |
6124 | if (!type.hasLocalNonFastQualifiers()) |
6125 | return type.getTypePtrUnsafe(); |
6126 | |
6127 | const ExtQuals *extQuals = type.getExtQualsUnsafe(); |
6128 | addConsistentQualifiers(extQuals->getQualifiers()); |
6129 | return extQuals->getBaseType(); |
6130 | } |
6131 | |
6132 | /// Apply the collected qualifiers to the given type. |
6133 | QualType apply(const ASTContext &Context, QualType QT) const; |
6134 | |
6135 | /// Apply the collected qualifiers to the given type. |
6136 | QualType apply(const ASTContext &Context, const Type* T) const; |
6137 | }; |
6138 | |
6139 | // Inline function definitions. |
6140 | |
6141 | inline SplitQualType SplitQualType::getSingleStepDesugaredType() const { |
6142 | SplitQualType desugar = |
6143 | Ty->getLocallyUnqualifiedSingleStepDesugaredType().split(); |
6144 | desugar.Quals.addConsistentQualifiers(Quals); |
6145 | return desugar; |
6146 | } |
6147 | |
6148 | inline const Type *QualType::getTypePtr() const { |
6149 | return getCommonPtr()->BaseType; |
6150 | } |
6151 | |
6152 | inline const Type *QualType::getTypePtrOrNull() const { |
6153 | return (isNull() ? nullptr : getCommonPtr()->BaseType); |
6154 | } |
6155 | |
6156 | inline SplitQualType QualType::split() const { |
6157 | if (!hasLocalNonFastQualifiers()) |
6158 | return SplitQualType(getTypePtrUnsafe(), |
6159 | Qualifiers::fromFastMask(getLocalFastQualifiers())); |
6160 | |
6161 | const ExtQuals *eq = getExtQualsUnsafe(); |
6162 | Qualifiers qs = eq->getQualifiers(); |
6163 | qs.addFastQualifiers(getLocalFastQualifiers()); |
6164 | return SplitQualType(eq->getBaseType(), qs); |
6165 | } |
6166 | |
6167 | inline Qualifiers QualType::getLocalQualifiers() const { |
6168 | Qualifiers Quals; |
6169 | if (hasLocalNonFastQualifiers()) |
6170 | Quals = getExtQualsUnsafe()->getQualifiers(); |
6171 | Quals.addFastQualifiers(getLocalFastQualifiers()); |
6172 | return Quals; |
6173 | } |
6174 | |
6175 | inline Qualifiers QualType::getQualifiers() const { |
6176 | Qualifiers quals = getCommonPtr()->CanonicalType.getLocalQualifiers(); |
6177 | quals.addFastQualifiers(getLocalFastQualifiers()); |
6178 | return quals; |
6179 | } |
6180 | |
6181 | inline unsigned QualType::getCVRQualifiers() const { |
6182 | unsigned cvr = getCommonPtr()->CanonicalType.getLocalCVRQualifiers(); |
6183 | cvr |= getLocalCVRQualifiers(); |
6184 | return cvr; |
6185 | } |
6186 | |
6187 | inline QualType QualType::getCanonicalType() const { |
6188 | QualType canon = getCommonPtr()->CanonicalType; |
6189 | return canon.withFastQualifiers(getLocalFastQualifiers()); |
6190 | } |
6191 | |
6192 | inline bool QualType::isCanonical() const { |
6193 | return getTypePtr()->isCanonicalUnqualified(); |
6194 | } |
6195 | |
6196 | inline bool QualType::isCanonicalAsParam() const { |
6197 | if (!isCanonical()) return false; |
6198 | if (hasLocalQualifiers()) return false; |
6199 | |
6200 | const Type *T = getTypePtr(); |
6201 | if (T->isVariablyModifiedType() && T->hasSizedVLAType()) |
6202 | return false; |
6203 | |
6204 | return !isa<FunctionType>(T) && !isa<ArrayType>(T); |
6205 | } |
6206 | |
6207 | inline bool QualType::isConstQualified() const { |
6208 | return isLocalConstQualified() || |
6209 | getCommonPtr()->CanonicalType.isLocalConstQualified(); |
6210 | } |
6211 | |
6212 | inline bool QualType::isRestrictQualified() const { |
6213 | return isLocalRestrictQualified() || |
6214 | getCommonPtr()->CanonicalType.isLocalRestrictQualified(); |
6215 | } |
6216 | |
6217 | |
6218 | inline bool QualType::isVolatileQualified() const { |
6219 | return isLocalVolatileQualified() || |
6220 | getCommonPtr()->CanonicalType.isLocalVolatileQualified(); |
6221 | } |
6222 | |
6223 | inline bool QualType::hasQualifiers() const { |
6224 | return hasLocalQualifiers() || |
6225 | getCommonPtr()->CanonicalType.hasLocalQualifiers(); |
6226 | } |
6227 | |
6228 | inline QualType QualType::getUnqualifiedType() const { |
6229 | if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers()) |
6230 | return QualType(getTypePtr(), 0); |
6231 | |
6232 | return QualType(getSplitUnqualifiedTypeImpl(*this).Ty, 0); |
6233 | } |
6234 | |
6235 | inline SplitQualType QualType::getSplitUnqualifiedType() const { |
6236 | if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers()) |
6237 | return split(); |
6238 | |
6239 | return getSplitUnqualifiedTypeImpl(*this); |
6240 | } |
6241 | |
6242 | inline void QualType::removeLocalConst() { |
6243 | removeLocalFastQualifiers(Qualifiers::Const); |
6244 | } |
6245 | |
6246 | inline void QualType::removeLocalRestrict() { |
6247 | removeLocalFastQualifiers(Qualifiers::Restrict); |
6248 | } |
6249 | |
6250 | inline void QualType::removeLocalVolatile() { |
6251 | removeLocalFastQualifiers(Qualifiers::Volatile); |
6252 | } |
6253 | |
6254 | inline void QualType::removeLocalCVRQualifiers(unsigned Mask) { |
6255 | assert(!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits")((!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits" ) ? static_cast<void> (0) : __assert_fail ("!(Mask & ~Qualifiers::CVRMask) && \"mask has non-CVR bits\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 6255, __PRETTY_FUNCTION__)); |
6256 | static_assert((int)Qualifiers::CVRMask == (int)Qualifiers::FastMask, |
6257 | "Fast bits differ from CVR bits!"); |
6258 | |
6259 | // Fast path: we don't need to touch the slow qualifiers. |
6260 | removeLocalFastQualifiers(Mask); |
6261 | } |
6262 | |
6263 | /// Return the address space of this type. |
6264 | inline LangAS QualType::getAddressSpace() const { |
6265 | return getQualifiers().getAddressSpace(); |
6266 | } |
6267 | |
6268 | /// Return the gc attribute of this type. |
6269 | inline Qualifiers::GC QualType::getObjCGCAttr() const { |
6270 | return getQualifiers().getObjCGCAttr(); |
6271 | } |
6272 | |
6273 | inline bool QualType::hasNonTrivialToPrimitiveDefaultInitializeCUnion() const { |
6274 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) |
6275 | return hasNonTrivialToPrimitiveDefaultInitializeCUnion(RD); |
6276 | return false; |
6277 | } |
6278 | |
6279 | inline bool QualType::hasNonTrivialToPrimitiveDestructCUnion() const { |
6280 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) |
6281 | return hasNonTrivialToPrimitiveDestructCUnion(RD); |
6282 | return false; |
6283 | } |
6284 | |
6285 | inline bool QualType::hasNonTrivialToPrimitiveCopyCUnion() const { |
6286 | if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl()) |
6287 | return hasNonTrivialToPrimitiveCopyCUnion(RD); |
6288 | return false; |
6289 | } |
6290 | |
6291 | inline FunctionType::ExtInfo getFunctionExtInfo(const Type &t) { |
6292 | if (const auto *PT = t.getAs<PointerType>()) { |
6293 | if (const auto *FT = PT->getPointeeType()->getAs<FunctionType>()) |
6294 | return FT->getExtInfo(); |
6295 | } else if (const auto *FT = t.getAs<FunctionType>()) |
6296 | return FT->getExtInfo(); |
6297 | |
6298 | return FunctionType::ExtInfo(); |
6299 | } |
6300 | |
6301 | inline FunctionType::ExtInfo getFunctionExtInfo(QualType t) { |
6302 | return getFunctionExtInfo(*t); |
6303 | } |
6304 | |
6305 | /// Determine whether this type is more |
6306 | /// qualified than the Other type. For example, "const volatile int" |
6307 | /// is more qualified than "const int", "volatile int", and |
6308 | /// "int". However, it is not more qualified than "const volatile |
6309 | /// int". |
6310 | inline bool QualType::isMoreQualifiedThan(QualType other) const { |
6311 | Qualifiers MyQuals = getQualifiers(); |
6312 | Qualifiers OtherQuals = other.getQualifiers(); |
6313 | return (MyQuals != OtherQuals && MyQuals.compatiblyIncludes(OtherQuals)); |
6314 | } |
6315 | |
6316 | /// Determine whether this type is at last |
6317 | /// as qualified as the Other type. For example, "const volatile |
6318 | /// int" is at least as qualified as "const int", "volatile int", |
6319 | /// "int", and "const volatile int". |
6320 | inline bool QualType::isAtLeastAsQualifiedAs(QualType other) const { |
6321 | Qualifiers OtherQuals = other.getQualifiers(); |
6322 | |
6323 | // Ignore __unaligned qualifier if this type is a void. |
6324 | if (getUnqualifiedType()->isVoidType()) |
6325 | OtherQuals.removeUnaligned(); |
6326 | |
6327 | return getQualifiers().compatiblyIncludes(OtherQuals); |
6328 | } |
6329 | |
6330 | /// If Type is a reference type (e.g., const |
6331 | /// int&), returns the type that the reference refers to ("const |
6332 | /// int"). Otherwise, returns the type itself. This routine is used |
6333 | /// throughout Sema to implement C++ 5p6: |
6334 | /// |
6335 | /// If an expression initially has the type "reference to T" (8.3.2, |
6336 | /// 8.5.3), the type is adjusted to "T" prior to any further |
6337 | /// analysis, the expression designates the object or function |
6338 | /// denoted by the reference, and the expression is an lvalue. |
6339 | inline QualType QualType::getNonReferenceType() const { |
6340 | if (const auto *RefType = (*this)->getAs<ReferenceType>()) |
6341 | return RefType->getPointeeType(); |
6342 | else |
6343 | return *this; |
6344 | } |
6345 | |
6346 | inline bool QualType::isCForbiddenLValueType() const { |
6347 | return ((getTypePtr()->isVoidType() && !hasQualifiers()) || |
6348 | getTypePtr()->isFunctionType()); |
6349 | } |
6350 | |
6351 | /// Tests whether the type is categorized as a fundamental type. |
6352 | /// |
6353 | /// \returns True for types specified in C++0x [basic.fundamental]. |
6354 | inline bool Type::isFundamentalType() const { |
6355 | return isVoidType() || |
6356 | isNullPtrType() || |
6357 | // FIXME: It's really annoying that we don't have an |
6358 | // 'isArithmeticType()' which agrees with the standard definition. |
6359 | (isArithmeticType() && !isEnumeralType()); |
6360 | } |
6361 | |
6362 | /// Tests whether the type is categorized as a compound type. |
6363 | /// |
6364 | /// \returns True for types specified in C++0x [basic.compound]. |
6365 | inline bool Type::isCompoundType() const { |
6366 | // C++0x [basic.compound]p1: |
6367 | // Compound types can be constructed in the following ways: |
6368 | // -- arrays of objects of a given type [...]; |
6369 | return isArrayType() || |
6370 | // -- functions, which have parameters of given types [...]; |
6371 | isFunctionType() || |
6372 | // -- pointers to void or objects or functions [...]; |
6373 | isPointerType() || |
6374 | // -- references to objects or functions of a given type. [...] |
6375 | isReferenceType() || |
6376 | // -- classes containing a sequence of objects of various types, [...]; |
6377 | isRecordType() || |
6378 | // -- unions, which are classes capable of containing objects of different |
6379 | // types at different times; |
6380 | isUnionType() || |
6381 | // -- enumerations, which comprise a set of named constant values. [...]; |
6382 | isEnumeralType() || |
6383 | // -- pointers to non-static class members, [...]. |
6384 | isMemberPointerType(); |
6385 | } |
6386 | |
6387 | inline bool Type::isFunctionType() const { |
6388 | return isa<FunctionType>(CanonicalType); |
6389 | } |
6390 | |
6391 | inline bool Type::isPointerType() const { |
6392 | return isa<PointerType>(CanonicalType); |
6393 | } |
6394 | |
6395 | inline bool Type::isAnyPointerType() const { |
6396 | return isPointerType() || isObjCObjectPointerType(); |
6397 | } |
6398 | |
6399 | inline bool Type::isBlockPointerType() const { |
6400 | return isa<BlockPointerType>(CanonicalType); |
6401 | } |
6402 | |
6403 | inline bool Type::isReferenceType() const { |
6404 | return isa<ReferenceType>(CanonicalType); |
6405 | } |
6406 | |
6407 | inline bool Type::isLValueReferenceType() const { |
6408 | return isa<LValueReferenceType>(CanonicalType); |
6409 | } |
6410 | |
6411 | inline bool Type::isRValueReferenceType() const { |
6412 | return isa<RValueReferenceType>(CanonicalType); |
6413 | } |
6414 | |
6415 | inline bool Type::isFunctionPointerType() const { |
6416 | if (const auto *T = getAs<PointerType>()) |
6417 | return T->getPointeeType()->isFunctionType(); |
6418 | else |
6419 | return false; |
6420 | } |
6421 | |
6422 | inline bool Type::isFunctionReferenceType() const { |
6423 | if (const auto *T = getAs<ReferenceType>()) |
6424 | return T->getPointeeType()->isFunctionType(); |
6425 | else |
6426 | return false; |
6427 | } |
6428 | |
6429 | inline bool Type::isMemberPointerType() const { |
6430 | return isa<MemberPointerType>(CanonicalType); |
6431 | } |
6432 | |
6433 | inline bool Type::isMemberFunctionPointerType() const { |
6434 | if (const auto *T = getAs<MemberPointerType>()) |
6435 | return T->isMemberFunctionPointer(); |
6436 | else |
6437 | return false; |
6438 | } |
6439 | |
6440 | inline bool Type::isMemberDataPointerType() const { |
6441 | if (const auto *T = getAs<MemberPointerType>()) |
6442 | return T->isMemberDataPointer(); |
6443 | else |
6444 | return false; |
6445 | } |
6446 | |
6447 | inline bool Type::isArrayType() const { |
6448 | return isa<ArrayType>(CanonicalType); |
6449 | } |
6450 | |
6451 | inline bool Type::isConstantArrayType() const { |
6452 | return isa<ConstantArrayType>(CanonicalType); |
6453 | } |
6454 | |
6455 | inline bool Type::isIncompleteArrayType() const { |
6456 | return isa<IncompleteArrayType>(CanonicalType); |
6457 | } |
6458 | |
6459 | inline bool Type::isVariableArrayType() const { |
6460 | return isa<VariableArrayType>(CanonicalType); |
6461 | } |
6462 | |
6463 | inline bool Type::isDependentSizedArrayType() const { |
6464 | return isa<DependentSizedArrayType>(CanonicalType); |
6465 | } |
6466 | |
6467 | inline bool Type::isBuiltinType() const { |
6468 | return isa<BuiltinType>(CanonicalType); |
6469 | } |
6470 | |
6471 | inline bool Type::isRecordType() const { |
6472 | return isa<RecordType>(CanonicalType); |
6473 | } |
6474 | |
6475 | inline bool Type::isEnumeralType() const { |
6476 | return isa<EnumType>(CanonicalType); |
6477 | } |
6478 | |
6479 | inline bool Type::isAnyComplexType() const { |
6480 | return isa<ComplexType>(CanonicalType); |
6481 | } |
6482 | |
6483 | inline bool Type::isVectorType() const { |
6484 | return isa<VectorType>(CanonicalType); |
6485 | } |
6486 | |
6487 | inline bool Type::isExtVectorType() const { |
6488 | return isa<ExtVectorType>(CanonicalType); |
6489 | } |
6490 | |
6491 | inline bool Type::isDependentAddressSpaceType() const { |
6492 | return isa<DependentAddressSpaceType>(CanonicalType); |
6493 | } |
6494 | |
6495 | inline bool Type::isObjCObjectPointerType() const { |
6496 | return isa<ObjCObjectPointerType>(CanonicalType); |
6497 | } |
6498 | |
6499 | inline bool Type::isObjCObjectType() const { |
6500 | return isa<ObjCObjectType>(CanonicalType); |
6501 | } |
6502 | |
6503 | inline bool Type::isObjCObjectOrInterfaceType() const { |
6504 | return isa<ObjCInterfaceType>(CanonicalType) || |
6505 | isa<ObjCObjectType>(CanonicalType); |
6506 | } |
6507 | |
6508 | inline bool Type::isAtomicType() const { |
6509 | return isa<AtomicType>(CanonicalType); |
6510 | } |
6511 | |
6512 | inline bool Type::isObjCQualifiedIdType() const { |
6513 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) |
6514 | return OPT->isObjCQualifiedIdType(); |
6515 | return false; |
6516 | } |
6517 | |
6518 | inline bool Type::isObjCQualifiedClassType() const { |
6519 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) |
6520 | return OPT->isObjCQualifiedClassType(); |
6521 | return false; |
6522 | } |
6523 | |
6524 | inline bool Type::isObjCIdType() const { |
6525 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) |
6526 | return OPT->isObjCIdType(); |
6527 | return false; |
6528 | } |
6529 | |
6530 | inline bool Type::isObjCClassType() const { |
6531 | if (const auto *OPT = getAs<ObjCObjectPointerType>()) |
6532 | return OPT->isObjCClassType(); |
6533 | return false; |
6534 | } |
6535 | |
6536 | inline bool Type::isObjCSelType() const { |
6537 | if (const auto *OPT = getAs<PointerType>()) |
6538 | return OPT->getPointeeType()->isSpecificBuiltinType(BuiltinType::ObjCSel); |
6539 | return false; |
6540 | } |
6541 | |
6542 | inline bool Type::isObjCBuiltinType() const { |
6543 | return isObjCIdType() || isObjCClassType() || isObjCSelType(); |
6544 | } |
6545 | |
6546 | inline bool Type::isDecltypeType() const { |
6547 | return isa<DecltypeType>(this); |
6548 | } |
6549 | |
6550 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ |
6551 | inline bool Type::is##Id##Type() const { \ |
6552 | return isSpecificBuiltinType(BuiltinType::Id); \ |
6553 | } |
6554 | #include "clang/Basic/OpenCLImageTypes.def" |
6555 | |
6556 | inline bool Type::isSamplerT() const { |
6557 | return isSpecificBuiltinType(BuiltinType::OCLSampler); |
6558 | } |
6559 | |
6560 | inline bool Type::isEventT() const { |
6561 | return isSpecificBuiltinType(BuiltinType::OCLEvent); |
6562 | } |
6563 | |
6564 | inline bool Type::isClkEventT() const { |
6565 | return isSpecificBuiltinType(BuiltinType::OCLClkEvent); |
6566 | } |
6567 | |
6568 | inline bool Type::isQueueT() const { |
6569 | return isSpecificBuiltinType(BuiltinType::OCLQueue); |
6570 | } |
6571 | |
6572 | inline bool Type::isReserveIDT() const { |
6573 | return isSpecificBuiltinType(BuiltinType::OCLReserveID); |
6574 | } |
6575 | |
6576 | inline bool Type::isImageType() const { |
6577 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) is##Id##Type() || |
6578 | return |
6579 | #include "clang/Basic/OpenCLImageTypes.def" |
6580 | false; // end boolean or operation |
6581 | } |
6582 | |
6583 | inline bool Type::isPipeType() const { |
6584 | return isa<PipeType>(CanonicalType); |
6585 | } |
6586 | |
6587 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ |
6588 | inline bool Type::is##Id##Type() const { \ |
6589 | return isSpecificBuiltinType(BuiltinType::Id); \ |
6590 | } |
6591 | #include "clang/Basic/OpenCLExtensionTypes.def" |
6592 | |
6593 | inline bool Type::isOCLIntelSubgroupAVCType() const { |
6594 | #define INTEL_SUBGROUP_AVC_TYPE(ExtType, Id) \ |
6595 | isOCLIntelSubgroupAVC##Id##Type() || |
6596 | return |
6597 | #include "clang/Basic/OpenCLExtensionTypes.def" |
6598 | false; // end of boolean or operation |
6599 | } |
6600 | |
6601 | inline bool Type::isOCLExtOpaqueType() const { |
6602 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) is##Id##Type() || |
6603 | return |
6604 | #include "clang/Basic/OpenCLExtensionTypes.def" |
6605 | false; // end of boolean or operation |
6606 | } |
6607 | |
6608 | inline bool Type::isOpenCLSpecificType() const { |
6609 | return isSamplerT() || isEventT() || isImageType() || isClkEventT() || |
6610 | isQueueT() || isReserveIDT() || isPipeType() || isOCLExtOpaqueType(); |
6611 | } |
6612 | |
6613 | inline bool Type::isTemplateTypeParmType() const { |
6614 | return isa<TemplateTypeParmType>(CanonicalType); |
6615 | } |
6616 | |
6617 | inline bool Type::isSpecificBuiltinType(unsigned K) const { |
6618 | if (const BuiltinType *BT = getAs<BuiltinType>()) |
6619 | if (BT->getKind() == (BuiltinType::Kind) K) |
6620 | return true; |
6621 | return false; |
6622 | } |
6623 | |
6624 | inline bool Type::isPlaceholderType() const { |
6625 | if (const auto *BT = dyn_cast<BuiltinType>(this)) |
6626 | return BT->isPlaceholderType(); |
6627 | return false; |
6628 | } |
6629 | |
6630 | inline const BuiltinType *Type::getAsPlaceholderType() const { |
6631 | if (const auto *BT = dyn_cast<BuiltinType>(this)) |
6632 | if (BT->isPlaceholderType()) |
6633 | return BT; |
6634 | return nullptr; |
6635 | } |
6636 | |
6637 | inline bool Type::isSpecificPlaceholderType(unsigned K) const { |
6638 | assert(BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K))((BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)) ? static_cast<void> (0) : __assert_fail ("BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 6638, __PRETTY_FUNCTION__)); |
6639 | if (const auto *BT = dyn_cast<BuiltinType>(this)) |
6640 | return (BT->getKind() == (BuiltinType::Kind) K); |
6641 | return false; |
6642 | } |
6643 | |
6644 | inline bool Type::isNonOverloadPlaceholderType() const { |
6645 | if (const auto *BT = dyn_cast<BuiltinType>(this)) |
6646 | return BT->isNonOverloadPlaceholderType(); |
6647 | return false; |
6648 | } |
6649 | |
6650 | inline bool Type::isVoidType() const { |
6651 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) |
6652 | return BT->getKind() == BuiltinType::Void; |
6653 | return false; |
6654 | } |
6655 | |
6656 | inline bool Type::isHalfType() const { |
6657 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) |
6658 | return BT->getKind() == BuiltinType::Half; |
6659 | // FIXME: Should we allow complex __fp16? Probably not. |
6660 | return false; |
6661 | } |
6662 | |
6663 | inline bool Type::isFloat16Type() const { |
6664 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) |
6665 | return BT->getKind() == BuiltinType::Float16; |
6666 | return false; |
6667 | } |
6668 | |
6669 | inline bool Type::isFloat128Type() const { |
6670 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) |
6671 | return BT->getKind() == BuiltinType::Float128; |
6672 | return false; |
6673 | } |
6674 | |
6675 | inline bool Type::isNullPtrType() const { |
6676 | if (const auto *BT = getAs<BuiltinType>()) |
6677 | return BT->getKind() == BuiltinType::NullPtr; |
6678 | return false; |
6679 | } |
6680 | |
6681 | bool IsEnumDeclComplete(EnumDecl *); |
6682 | bool IsEnumDeclScoped(EnumDecl *); |
6683 | |
6684 | inline bool Type::isIntegerType() const { |
6685 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) |
6686 | return BT->getKind() >= BuiltinType::Bool && |
6687 | BT->getKind() <= BuiltinType::Int128; |
6688 | if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) { |
6689 | // Incomplete enum types are not treated as integer types. |
6690 | // FIXME: In C++, enum types are never integer types. |
6691 | return IsEnumDeclComplete(ET->getDecl()) && |
6692 | !IsEnumDeclScoped(ET->getDecl()); |
6693 | } |
6694 | return false; |
6695 | } |
6696 | |
6697 | inline bool Type::isFixedPointType() const { |
6698 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { |
6699 | return BT->getKind() >= BuiltinType::ShortAccum && |
6700 | BT->getKind() <= BuiltinType::SatULongFract; |
6701 | } |
6702 | return false; |
6703 | } |
6704 | |
6705 | inline bool Type::isFixedPointOrIntegerType() const { |
6706 | return isFixedPointType() || isIntegerType(); |
6707 | } |
6708 | |
6709 | inline bool Type::isSaturatedFixedPointType() const { |
6710 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { |
6711 | return BT->getKind() >= BuiltinType::SatShortAccum && |
6712 | BT->getKind() <= BuiltinType::SatULongFract; |
6713 | } |
6714 | return false; |
6715 | } |
6716 | |
6717 | inline bool Type::isUnsaturatedFixedPointType() const { |
6718 | return isFixedPointType() && !isSaturatedFixedPointType(); |
6719 | } |
6720 | |
6721 | inline bool Type::isSignedFixedPointType() const { |
6722 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) { |
6723 | return ((BT->getKind() >= BuiltinType::ShortAccum && |
6724 | BT->getKind() <= BuiltinType::LongAccum) || |
6725 | (BT->getKind() >= BuiltinType::ShortFract && |
6726 | BT->getKind() <= BuiltinType::LongFract) || |
6727 | (BT->getKind() >= BuiltinType::SatShortAccum && |
6728 | BT->getKind() <= BuiltinType::SatLongAccum) || |
6729 | (BT->getKind() >= BuiltinType::SatShortFract && |
6730 | BT->getKind() <= BuiltinType::SatLongFract)); |
6731 | } |
6732 | return false; |
6733 | } |
6734 | |
6735 | inline bool Type::isUnsignedFixedPointType() const { |
6736 | return isFixedPointType() && !isSignedFixedPointType(); |
6737 | } |
6738 | |
6739 | inline bool Type::isScalarType() const { |
6740 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) |
6741 | return BT->getKind() > BuiltinType::Void && |
6742 | BT->getKind() <= BuiltinType::NullPtr; |
6743 | if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) |
6744 | // Enums are scalar types, but only if they are defined. Incomplete enums |
6745 | // are not treated as scalar types. |
6746 | return IsEnumDeclComplete(ET->getDecl()); |
6747 | return isa<PointerType>(CanonicalType) || |
6748 | isa<BlockPointerType>(CanonicalType) || |
6749 | isa<MemberPointerType>(CanonicalType) || |
6750 | isa<ComplexType>(CanonicalType) || |
6751 | isa<ObjCObjectPointerType>(CanonicalType); |
6752 | } |
6753 | |
6754 | inline bool Type::isIntegralOrEnumerationType() const { |
6755 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) |
6756 | return BT->getKind() >= BuiltinType::Bool && |
6757 | BT->getKind() <= BuiltinType::Int128; |
6758 | |
6759 | // Check for a complete enum type; incomplete enum types are not properly an |
6760 | // enumeration type in the sense required here. |
6761 | if (const auto *ET = dyn_cast<EnumType>(CanonicalType)) |
6762 | return IsEnumDeclComplete(ET->getDecl()); |
6763 | |
6764 | return false; |
6765 | } |
6766 | |
6767 | inline bool Type::isBooleanType() const { |
6768 | if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) |
6769 | return BT->getKind() == BuiltinType::Bool; |
6770 | return false; |
6771 | } |
6772 | |
6773 | inline bool Type::isUndeducedType() const { |
6774 | auto *DT = getContainedDeducedType(); |
6775 | return DT && !DT->isDeduced(); |
6776 | } |
6777 | |
6778 | /// Determines whether this is a type for which one can define |
6779 | /// an overloaded operator. |
6780 | inline bool Type::isOverloadableType() const { |
6781 | return isDependentType() || isRecordType() || isEnumeralType(); |
6782 | } |
6783 | |
6784 | /// Determines whether this type can decay to a pointer type. |
6785 | inline bool Type::canDecayToPointerType() const { |
6786 | return isFunctionType() || isArrayType(); |
6787 | } |
6788 | |
6789 | inline bool Type::hasPointerRepresentation() const { |
6790 | return (isPointerType() || isReferenceType() || isBlockPointerType() || |
6791 | isObjCObjectPointerType() || isNullPtrType()); |
6792 | } |
6793 | |
6794 | inline bool Type::hasObjCPointerRepresentation() const { |
6795 | return isObjCObjectPointerType(); |
6796 | } |
6797 | |
6798 | inline const Type *Type::getBaseElementTypeUnsafe() const { |
6799 | const Type *type = this; |
6800 | while (const ArrayType *arrayType = type->getAsArrayTypeUnsafe()) |
6801 | type = arrayType->getElementType().getTypePtr(); |
6802 | return type; |
6803 | } |
6804 | |
6805 | inline const Type *Type::getPointeeOrArrayElementType() const { |
6806 | const Type *type = this; |
6807 | if (type->isAnyPointerType()) |
6808 | return type->getPointeeType().getTypePtr(); |
6809 | else if (type->isArrayType()) |
6810 | return type->getBaseElementTypeUnsafe(); |
6811 | return type; |
6812 | } |
6813 | |
6814 | /// Insertion operator for diagnostics. This allows sending Qualifiers into a |
6815 | /// diagnostic with <<. |
6816 | inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
6817 | Qualifiers Q) { |
6818 | DB.AddTaggedVal(Q.getAsOpaqueValue(), |
6819 | DiagnosticsEngine::ArgumentKind::ak_qual); |
6820 | return DB; |
6821 | } |
6822 | |
6823 | /// Insertion operator for partial diagnostics. This allows sending Qualifiers |
6824 | /// into a diagnostic with <<. |
6825 | inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD, |
6826 | Qualifiers Q) { |
6827 | PD.AddTaggedVal(Q.getAsOpaqueValue(), |
6828 | DiagnosticsEngine::ArgumentKind::ak_qual); |
6829 | return PD; |
6830 | } |
6831 | |
6832 | /// Insertion operator for diagnostics. This allows sending QualType's into a |
6833 | /// diagnostic with <<. |
6834 | inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB, |
6835 | QualType T) { |
6836 | DB.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), |
6837 | DiagnosticsEngine::ak_qualtype); |
6838 | return DB; |
6839 | } |
6840 | |
6841 | /// Insertion operator for partial diagnostics. This allows sending QualType's |
6842 | /// into a diagnostic with <<. |
6843 | inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD, |
6844 | QualType T) { |
6845 | PD.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()), |
6846 | DiagnosticsEngine::ak_qualtype); |
6847 | return PD; |
6848 | } |
6849 | |
6850 | // Helper class template that is used by Type::getAs to ensure that one does |
6851 | // not try to look through a qualified type to get to an array type. |
6852 | template <typename T> |
6853 | using TypeIsArrayType = |
6854 | std::integral_constant<bool, std::is_same<T, ArrayType>::value || |
6855 | std::is_base_of<ArrayType, T>::value>; |
6856 | |
6857 | // Member-template getAs<specific type>'. |
6858 | template <typename T> const T *Type::getAs() const { |
6859 | static_assert(!TypeIsArrayType<T>::value, |
6860 | "ArrayType cannot be used with getAs!"); |
6861 | |
6862 | // If this is directly a T type, return it. |
6863 | if (const auto *Ty = dyn_cast<T>(this)) |
6864 | return Ty; |
6865 | |
6866 | // If the canonical form of this type isn't the right kind, reject it. |
6867 | if (!isa<T>(CanonicalType)) |
6868 | return nullptr; |
6869 | |
6870 | // If this is a typedef for the type, strip the typedef off without |
6871 | // losing all typedef information. |
6872 | return cast<T>(getUnqualifiedDesugaredType()); |
6873 | } |
6874 | |
6875 | template <typename T> const T *Type::getAsAdjusted() const { |
6876 | static_assert(!TypeIsArrayType<T>::value, "ArrayType cannot be used with getAsAdjusted!"); |
6877 | |
6878 | // If this is directly a T type, return it. |
6879 | if (const auto *Ty = dyn_cast<T>(this)) |
6880 | return Ty; |
6881 | |
6882 | // If the canonical form of this type isn't the right kind, reject it. |
6883 | if (!isa<T>(CanonicalType)) |
6884 | return nullptr; |
6885 | |
6886 | // Strip off type adjustments that do not modify the underlying nature of the |
6887 | // type. |
6888 | const Type *Ty = this; |
6889 | while (Ty) { |
6890 | if (const auto *A = dyn_cast<AttributedType>(Ty)) |
6891 | Ty = A->getModifiedType().getTypePtr(); |
6892 | else if (const auto *E = dyn_cast<ElaboratedType>(Ty)) |
6893 | Ty = E->desugar().getTypePtr(); |
6894 | else if (const auto *P = dyn_cast<ParenType>(Ty)) |
6895 | Ty = P->desugar().getTypePtr(); |
6896 | else if (const auto *A = dyn_cast<AdjustedType>(Ty)) |
6897 | Ty = A->desugar().getTypePtr(); |
6898 | else if (const auto *M = dyn_cast<MacroQualifiedType>(Ty)) |
6899 | Ty = M->desugar().getTypePtr(); |
6900 | else |
6901 | break; |
6902 | } |
6903 | |
6904 | // Just because the canonical type is correct does not mean we can use cast<>, |
6905 | // since we may not have stripped off all the sugar down to the base type. |
6906 | return dyn_cast<T>(Ty); |
6907 | } |
6908 | |
6909 | inline const ArrayType *Type::getAsArrayTypeUnsafe() const { |
6910 | // If this is directly an array type, return it. |
6911 | if (const auto *arr = dyn_cast<ArrayType>(this)) |
6912 | return arr; |
6913 | |
6914 | // If the canonical form of this type isn't the right kind, reject it. |
6915 | if (!isa<ArrayType>(CanonicalType)) |
6916 | return nullptr; |
6917 | |
6918 | // If this is a typedef for the type, strip the typedef off without |
6919 | // losing all typedef information. |
6920 | return cast<ArrayType>(getUnqualifiedDesugaredType()); |
6921 | } |
6922 | |
6923 | template <typename T> const T *Type::castAs() const { |
6924 | static_assert(!TypeIsArrayType<T>::value, |
6925 | "ArrayType cannot be used with castAs!"); |
6926 | |
6927 | if (const auto *ty = dyn_cast<T>(this)) return ty; |
6928 | assert(isa<T>(CanonicalType))((isa<T>(CanonicalType)) ? static_cast<void> (0) : __assert_fail ("isa<T>(CanonicalType)", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 6928, __PRETTY_FUNCTION__)); |
6929 | return cast<T>(getUnqualifiedDesugaredType()); |
6930 | } |
6931 | |
6932 | inline const ArrayType *Type::castAsArrayTypeUnsafe() const { |
6933 | assert(isa<ArrayType>(CanonicalType))((isa<ArrayType>(CanonicalType)) ? static_cast<void> (0) : __assert_fail ("isa<ArrayType>(CanonicalType)", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 6933, __PRETTY_FUNCTION__)); |
6934 | if (const auto *arr = dyn_cast<ArrayType>(this)) return arr; |
6935 | return cast<ArrayType>(getUnqualifiedDesugaredType()); |
6936 | } |
6937 | |
6938 | DecayedType::DecayedType(QualType OriginalType, QualType DecayedPtr, |
6939 | QualType CanonicalPtr) |
6940 | : AdjustedType(Decayed, OriginalType, DecayedPtr, CanonicalPtr) { |
6941 | #ifndef NDEBUG |
6942 | QualType Adjusted = getAdjustedType(); |
6943 | (void)AttributedType::stripOuterNullability(Adjusted); |
6944 | assert(isa<PointerType>(Adjusted))((isa<PointerType>(Adjusted)) ? static_cast<void> (0) : __assert_fail ("isa<PointerType>(Adjusted)", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/include/clang/AST/Type.h" , 6944, __PRETTY_FUNCTION__)); |
6945 | #endif |
6946 | } |
6947 | |
6948 | QualType DecayedType::getPointeeType() const { |
6949 | QualType Decayed = getDecayedType(); |
6950 | (void)AttributedType::stripOuterNullability(Decayed); |
6951 | return cast<PointerType>(Decayed)->getPointeeType(); |
6952 | } |
6953 | |
6954 | // Get the decimal string representation of a fixed point type, represented |
6955 | // as a scaled integer. |
6956 | // TODO: At some point, we should change the arguments to instead just accept an |
6957 | // APFixedPoint instead of APSInt and scale. |
6958 | void FixedPointValueToString(SmallVectorImpl<char> &Str, llvm::APSInt Val, |
6959 | unsigned Scale); |
6960 | |
6961 | } // namespace clang |
6962 | |
6963 | #endif // LLVM_CLANG_AST_TYPE_H |