File: | tools/clang/lib/AST/Mangle.cpp |
Warning: | line 389, column 17 Called C++ object pointer is null |
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1 | //===--- Mangle.cpp - Mangle C++ Names --------------------------*- 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 | // Implements generic name mangling support for blocks and Objective-C. | |||
10 | // | |||
11 | //===----------------------------------------------------------------------===// | |||
12 | #include "clang/AST/Attr.h" | |||
13 | #include "clang/AST/ASTContext.h" | |||
14 | #include "clang/AST/Decl.h" | |||
15 | #include "clang/AST/DeclCXX.h" | |||
16 | #include "clang/AST/DeclObjC.h" | |||
17 | #include "clang/AST/DeclTemplate.h" | |||
18 | #include "clang/AST/ExprCXX.h" | |||
19 | #include "clang/AST/Mangle.h" | |||
20 | #include "clang/AST/VTableBuilder.h" | |||
21 | #include "clang/Basic/ABI.h" | |||
22 | #include "clang/Basic/SourceManager.h" | |||
23 | #include "clang/Basic/TargetInfo.h" | |||
24 | #include "llvm/ADT/StringExtras.h" | |||
25 | #include "llvm/IR/DataLayout.h" | |||
26 | #include "llvm/IR/Mangler.h" | |||
27 | #include "llvm/Support/ErrorHandling.h" | |||
28 | #include "llvm/Support/raw_ostream.h" | |||
29 | ||||
30 | using namespace clang; | |||
31 | ||||
32 | // FIXME: For blocks we currently mimic GCC's mangling scheme, which leaves | |||
33 | // much to be desired. Come up with a better mangling scheme. | |||
34 | ||||
35 | static void mangleFunctionBlock(MangleContext &Context, | |||
36 | StringRef Outer, | |||
37 | const BlockDecl *BD, | |||
38 | raw_ostream &Out) { | |||
39 | unsigned discriminator = Context.getBlockId(BD, true); | |||
40 | if (discriminator == 0) | |||
41 | Out << "__" << Outer << "_block_invoke"; | |||
42 | else | |||
43 | Out << "__" << Outer << "_block_invoke_" << discriminator+1; | |||
44 | } | |||
45 | ||||
46 | void MangleContext::anchor() { } | |||
47 | ||||
48 | enum CCMangling { | |||
49 | CCM_Other, | |||
50 | CCM_Fast, | |||
51 | CCM_RegCall, | |||
52 | CCM_Vector, | |||
53 | CCM_Std | |||
54 | }; | |||
55 | ||||
56 | static bool isExternC(const NamedDecl *ND) { | |||
57 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) | |||
58 | return FD->isExternC(); | |||
59 | return cast<VarDecl>(ND)->isExternC(); | |||
60 | } | |||
61 | ||||
62 | static CCMangling getCallingConvMangling(const ASTContext &Context, | |||
63 | const NamedDecl *ND) { | |||
64 | const TargetInfo &TI = Context.getTargetInfo(); | |||
65 | const llvm::Triple &Triple = TI.getTriple(); | |||
66 | if (!Triple.isOSWindows() || | |||
67 | !(Triple.getArch() == llvm::Triple::x86 || | |||
68 | Triple.getArch() == llvm::Triple::x86_64)) | |||
69 | return CCM_Other; | |||
70 | ||||
71 | if (Context.getLangOpts().CPlusPlus && !isExternC(ND) && | |||
72 | TI.getCXXABI() == TargetCXXABI::Microsoft) | |||
73 | return CCM_Other; | |||
74 | ||||
75 | const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND); | |||
76 | if (!FD) | |||
77 | return CCM_Other; | |||
78 | QualType T = FD->getType(); | |||
79 | ||||
80 | const FunctionType *FT = T->castAs<FunctionType>(); | |||
81 | ||||
82 | CallingConv CC = FT->getCallConv(); | |||
83 | switch (CC) { | |||
84 | default: | |||
85 | return CCM_Other; | |||
86 | case CC_X86FastCall: | |||
87 | return CCM_Fast; | |||
88 | case CC_X86StdCall: | |||
89 | return CCM_Std; | |||
90 | case CC_X86VectorCall: | |||
91 | return CCM_Vector; | |||
92 | } | |||
93 | } | |||
94 | ||||
95 | bool MangleContext::shouldMangleDeclName(const NamedDecl *D) { | |||
96 | const ASTContext &ASTContext = getASTContext(); | |||
97 | ||||
98 | CCMangling CC = getCallingConvMangling(ASTContext, D); | |||
99 | if (CC != CCM_Other) | |||
100 | return true; | |||
101 | ||||
102 | // If the declaration has an owning module for linkage purposes that needs to | |||
103 | // be mangled, we must mangle its name. | |||
104 | if (!D->hasExternalFormalLinkage() && D->getOwningModuleForLinkage()) | |||
105 | return true; | |||
106 | ||||
107 | // In C, functions with no attributes never need to be mangled. Fastpath them. | |||
108 | if (!getASTContext().getLangOpts().CPlusPlus && !D->hasAttrs()) | |||
109 | return false; | |||
110 | ||||
111 | // Any decl can be declared with __asm("foo") on it, and this takes precedence | |||
112 | // over all other naming in the .o file. | |||
113 | if (D->hasAttr<AsmLabelAttr>()) | |||
114 | return true; | |||
115 | ||||
116 | return shouldMangleCXXName(D); | |||
117 | } | |||
118 | ||||
119 | void MangleContext::mangleName(const NamedDecl *D, raw_ostream &Out) { | |||
120 | // Any decl can be declared with __asm("foo") on it, and this takes precedence | |||
121 | // over all other naming in the .o file. | |||
122 | if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) { | |||
123 | // If we have an asm name, then we use it as the mangling. | |||
124 | ||||
125 | // If the label isn't literal, or if this is an alias for an LLVM intrinsic, | |||
126 | // do not add a "\01" prefix. | |||
127 | if (!ALA->getIsLiteralLabel() || ALA->getLabel().startswith("llvm.")) { | |||
128 | Out << ALA->getLabel(); | |||
129 | return; | |||
130 | } | |||
131 | ||||
132 | // Adding the prefix can cause problems when one file has a "foo" and | |||
133 | // another has a "\01foo". That is known to happen on ELF with the | |||
134 | // tricks normally used for producing aliases (PR9177). Fortunately the | |||
135 | // llvm mangler on ELF is a nop, so we can just avoid adding the \01 | |||
136 | // marker. | |||
137 | char GlobalPrefix = | |||
138 | getASTContext().getTargetInfo().getDataLayout().getGlobalPrefix(); | |||
139 | if (GlobalPrefix) | |||
140 | Out << '\01'; // LLVM IR Marker for __asm("foo") | |||
141 | ||||
142 | Out << ALA->getLabel(); | |||
143 | return; | |||
144 | } | |||
145 | ||||
146 | const ASTContext &ASTContext = getASTContext(); | |||
147 | CCMangling CC = getCallingConvMangling(ASTContext, D); | |||
148 | bool MCXX = shouldMangleCXXName(D); | |||
149 | const TargetInfo &TI = Context.getTargetInfo(); | |||
150 | if (CC == CCM_Other || (MCXX && TI.getCXXABI() == TargetCXXABI::Microsoft)) { | |||
151 | if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D)) | |||
152 | mangleObjCMethodName(OMD, Out); | |||
153 | else | |||
154 | mangleCXXName(D, Out); | |||
155 | return; | |||
156 | } | |||
157 | ||||
158 | Out << '\01'; | |||
159 | if (CC == CCM_Std) | |||
160 | Out << '_'; | |||
161 | else if (CC == CCM_Fast) | |||
162 | Out << '@'; | |||
163 | else if (CC == CCM_RegCall) | |||
164 | Out << "__regcall3__"; | |||
165 | ||||
166 | if (!MCXX) | |||
167 | Out << D->getIdentifier()->getName(); | |||
168 | else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D)) | |||
169 | mangleObjCMethodName(OMD, Out); | |||
170 | else | |||
171 | mangleCXXName(D, Out); | |||
172 | ||||
173 | const FunctionDecl *FD = cast<FunctionDecl>(D); | |||
174 | const FunctionType *FT = FD->getType()->castAs<FunctionType>(); | |||
175 | const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FT); | |||
176 | if (CC == CCM_Vector) | |||
177 | Out << '@'; | |||
178 | Out << '@'; | |||
179 | if (!Proto) { | |||
180 | Out << '0'; | |||
181 | return; | |||
182 | } | |||
183 | assert(!Proto->isVariadic())((!Proto->isVariadic()) ? static_cast<void> (0) : __assert_fail ("!Proto->isVariadic()", "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/AST/Mangle.cpp" , 183, __PRETTY_FUNCTION__)); | |||
184 | unsigned ArgWords = 0; | |||
185 | if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) | |||
186 | if (!MD->isStatic()) | |||
187 | ++ArgWords; | |||
188 | for (const auto &AT : Proto->param_types()) | |||
189 | // Size should be aligned to pointer size. | |||
190 | ArgWords += | |||
191 | llvm::alignTo(ASTContext.getTypeSize(AT), TI.getPointerWidth(0)) / | |||
192 | TI.getPointerWidth(0); | |||
193 | Out << ((TI.getPointerWidth(0) / 8) * ArgWords); | |||
194 | } | |||
195 | ||||
196 | void MangleContext::mangleGlobalBlock(const BlockDecl *BD, | |||
197 | const NamedDecl *ID, | |||
198 | raw_ostream &Out) { | |||
199 | unsigned discriminator = getBlockId(BD, false); | |||
200 | if (ID) { | |||
201 | if (shouldMangleDeclName(ID)) | |||
202 | mangleName(ID, Out); | |||
203 | else { | |||
204 | Out << ID->getIdentifier()->getName(); | |||
205 | } | |||
206 | } | |||
207 | if (discriminator == 0) | |||
208 | Out << "_block_invoke"; | |||
209 | else | |||
210 | Out << "_block_invoke_" << discriminator+1; | |||
211 | } | |||
212 | ||||
213 | void MangleContext::mangleCtorBlock(const CXXConstructorDecl *CD, | |||
214 | CXXCtorType CT, const BlockDecl *BD, | |||
215 | raw_ostream &ResStream) { | |||
216 | SmallString<64> Buffer; | |||
217 | llvm::raw_svector_ostream Out(Buffer); | |||
218 | mangleCXXCtor(CD, CT, Out); | |||
219 | mangleFunctionBlock(*this, Buffer, BD, ResStream); | |||
220 | } | |||
221 | ||||
222 | void MangleContext::mangleDtorBlock(const CXXDestructorDecl *DD, | |||
223 | CXXDtorType DT, const BlockDecl *BD, | |||
224 | raw_ostream &ResStream) { | |||
225 | SmallString<64> Buffer; | |||
226 | llvm::raw_svector_ostream Out(Buffer); | |||
227 | mangleCXXDtor(DD, DT, Out); | |||
228 | mangleFunctionBlock(*this, Buffer, BD, ResStream); | |||
229 | } | |||
230 | ||||
231 | void MangleContext::mangleBlock(const DeclContext *DC, const BlockDecl *BD, | |||
232 | raw_ostream &Out) { | |||
233 | assert(!isa<CXXConstructorDecl>(DC) && !isa<CXXDestructorDecl>(DC))((!isa<CXXConstructorDecl>(DC) && !isa<CXXDestructorDecl >(DC)) ? static_cast<void> (0) : __assert_fail ("!isa<CXXConstructorDecl>(DC) && !isa<CXXDestructorDecl>(DC)" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/AST/Mangle.cpp" , 233, __PRETTY_FUNCTION__)); | |||
234 | ||||
235 | SmallString<64> Buffer; | |||
236 | llvm::raw_svector_ostream Stream(Buffer); | |||
237 | if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(DC)) { | |||
238 | mangleObjCMethodName(Method, Stream); | |||
239 | } else { | |||
240 | assert((isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) &&(((isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) && "expected a NamedDecl or BlockDecl") ? static_cast<void> (0) : __assert_fail ("(isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) && \"expected a NamedDecl or BlockDecl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/AST/Mangle.cpp" , 241, __PRETTY_FUNCTION__)) | |||
241 | "expected a NamedDecl or BlockDecl")(((isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) && "expected a NamedDecl or BlockDecl") ? static_cast<void> (0) : __assert_fail ("(isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) && \"expected a NamedDecl or BlockDecl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/AST/Mangle.cpp" , 241, __PRETTY_FUNCTION__)); | |||
242 | if (isa<BlockDecl>(DC)) | |||
243 | for (; DC && isa<BlockDecl>(DC); DC = DC->getParent()) | |||
244 | (void) getBlockId(cast<BlockDecl>(DC), true); | |||
245 | assert((isa<TranslationUnitDecl>(DC) || isa<NamedDecl>(DC)) &&(((isa<TranslationUnitDecl>(DC) || isa<NamedDecl> (DC)) && "expected a TranslationUnitDecl or a NamedDecl" ) ? static_cast<void> (0) : __assert_fail ("(isa<TranslationUnitDecl>(DC) || isa<NamedDecl>(DC)) && \"expected a TranslationUnitDecl or a NamedDecl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/AST/Mangle.cpp" , 246, __PRETTY_FUNCTION__)) | |||
246 | "expected a TranslationUnitDecl or a NamedDecl")(((isa<TranslationUnitDecl>(DC) || isa<NamedDecl> (DC)) && "expected a TranslationUnitDecl or a NamedDecl" ) ? static_cast<void> (0) : __assert_fail ("(isa<TranslationUnitDecl>(DC) || isa<NamedDecl>(DC)) && \"expected a TranslationUnitDecl or a NamedDecl\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/AST/Mangle.cpp" , 246, __PRETTY_FUNCTION__)); | |||
247 | if (const auto *CD = dyn_cast<CXXConstructorDecl>(DC)) | |||
248 | mangleCtorBlock(CD, /*CT*/ Ctor_Complete, BD, Out); | |||
249 | else if (const auto *DD = dyn_cast<CXXDestructorDecl>(DC)) | |||
250 | mangleDtorBlock(DD, /*DT*/ Dtor_Complete, BD, Out); | |||
251 | else if (auto ND = dyn_cast<NamedDecl>(DC)) { | |||
252 | if (!shouldMangleDeclName(ND) && ND->getIdentifier()) | |||
253 | Stream << ND->getIdentifier()->getName(); | |||
254 | else { | |||
255 | // FIXME: We were doing a mangleUnqualifiedName() before, but that's | |||
256 | // a private member of a class that will soon itself be private to the | |||
257 | // Itanium C++ ABI object. What should we do now? Right now, I'm just | |||
258 | // calling the mangleName() method on the MangleContext; is there a | |||
259 | // better way? | |||
260 | mangleName(ND, Stream); | |||
261 | } | |||
262 | } | |||
263 | } | |||
264 | mangleFunctionBlock(*this, Buffer, BD, Out); | |||
265 | } | |||
266 | ||||
267 | void MangleContext::mangleObjCMethodNameWithoutSize(const ObjCMethodDecl *MD, | |||
268 | raw_ostream &OS) { | |||
269 | const ObjCContainerDecl *CD = | |||
270 | dyn_cast<ObjCContainerDecl>(MD->getDeclContext()); | |||
271 | assert (CD && "Missing container decl in GetNameForMethod")((CD && "Missing container decl in GetNameForMethod") ? static_cast<void> (0) : __assert_fail ("CD && \"Missing container decl in GetNameForMethod\"" , "/build/llvm-toolchain-snapshot-10~svn373517/tools/clang/lib/AST/Mangle.cpp" , 271, __PRETTY_FUNCTION__)); | |||
272 | OS << (MD->isInstanceMethod() ? '-' : '+') << '['; | |||
273 | if (const ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(CD)) { | |||
274 | OS << CID->getClassInterface()->getName(); | |||
275 | OS << '(' << *CID << ')'; | |||
276 | } else { | |||
277 | OS << CD->getName(); | |||
278 | } | |||
279 | OS << ' '; | |||
280 | MD->getSelector().print(OS); | |||
281 | OS << ']'; | |||
282 | } | |||
283 | ||||
284 | void MangleContext::mangleObjCMethodName(const ObjCMethodDecl *MD, | |||
285 | raw_ostream &Out) { | |||
286 | SmallString<64> Name; | |||
287 | llvm::raw_svector_ostream OS(Name); | |||
288 | ||||
289 | mangleObjCMethodNameWithoutSize(MD, OS); | |||
290 | Out << OS.str().size() << OS.str(); | |||
291 | } | |||
292 | ||||
293 | class ASTNameGenerator::Implementation { | |||
294 | std::unique_ptr<MangleContext> MC; | |||
295 | llvm::DataLayout DL; | |||
296 | ||||
297 | public: | |||
298 | explicit Implementation(ASTContext &Ctx) | |||
299 | : MC(Ctx.createMangleContext()), DL(Ctx.getTargetInfo().getDataLayout()) { | |||
300 | } | |||
301 | ||||
302 | bool writeName(const Decl *D, raw_ostream &OS) { | |||
303 | // First apply frontend mangling. | |||
304 | SmallString<128> FrontendBuf; | |||
305 | llvm::raw_svector_ostream FrontendBufOS(FrontendBuf); | |||
306 | if (auto *FD = dyn_cast<FunctionDecl>(D)) { | |||
307 | if (FD->isDependentContext()) | |||
308 | return true; | |||
309 | if (writeFuncOrVarName(FD, FrontendBufOS)) | |||
310 | return true; | |||
311 | } else if (auto *VD = dyn_cast<VarDecl>(D)) { | |||
312 | if (writeFuncOrVarName(VD, FrontendBufOS)) | |||
313 | return true; | |||
314 | } else if (auto *MD = dyn_cast<ObjCMethodDecl>(D)) { | |||
315 | MC->mangleObjCMethodNameWithoutSize(MD, OS); | |||
316 | return false; | |||
317 | } else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) { | |||
318 | writeObjCClassName(ID, FrontendBufOS); | |||
319 | } else { | |||
320 | return true; | |||
321 | } | |||
322 | ||||
323 | // Now apply backend mangling. | |||
324 | llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL); | |||
325 | return false; | |||
326 | } | |||
327 | ||||
328 | std::string getName(const Decl *D) { | |||
329 | std::string Name; | |||
330 | { | |||
331 | llvm::raw_string_ostream OS(Name); | |||
332 | writeName(D, OS); | |||
333 | } | |||
334 | return Name; | |||
335 | } | |||
336 | ||||
337 | enum ObjCKind { | |||
338 | ObjCClass, | |||
339 | ObjCMetaclass, | |||
340 | }; | |||
341 | ||||
342 | static StringRef getClassSymbolPrefix(ObjCKind Kind, | |||
343 | const ASTContext &Context) { | |||
344 | if (Context.getLangOpts().ObjCRuntime.isGNUFamily()) | |||
345 | return Kind == ObjCMetaclass ? "_OBJC_METACLASS_" : "_OBJC_CLASS_"; | |||
346 | return Kind == ObjCMetaclass ? "OBJC_METACLASS_$_" : "OBJC_CLASS_$_"; | |||
347 | } | |||
348 | ||||
349 | std::vector<std::string> getAllManglings(const ObjCContainerDecl *OCD) { | |||
350 | StringRef ClassName; | |||
351 | if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(OCD)) | |||
352 | ClassName = OID->getObjCRuntimeNameAsString(); | |||
353 | else if (const auto *OID = dyn_cast<ObjCImplementationDecl>(OCD)) | |||
354 | ClassName = OID->getObjCRuntimeNameAsString(); | |||
355 | ||||
356 | if (ClassName.empty()) | |||
357 | return {}; | |||
358 | ||||
359 | auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string { | |||
360 | SmallString<40> Mangled; | |||
361 | auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext()); | |||
362 | llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL); | |||
363 | return Mangled.str(); | |||
364 | }; | |||
365 | ||||
366 | return { | |||
367 | Mangle(ObjCClass, ClassName), | |||
368 | Mangle(ObjCMetaclass, ClassName), | |||
369 | }; | |||
370 | } | |||
371 | ||||
372 | std::vector<std::string> getAllManglings(const Decl *D) { | |||
373 | if (const auto *OCD
| |||
374 | return getAllManglings(OCD); | |||
375 | ||||
376 | if (!(isa<CXXRecordDecl>(D) || isa<CXXMethodDecl>(D))) | |||
377 | return {}; | |||
378 | ||||
379 | const NamedDecl *ND = cast<NamedDecl>(D); | |||
380 | ||||
381 | ASTContext &Ctx = ND->getASTContext(); | |||
382 | std::unique_ptr<MangleContext> M(Ctx.createMangleContext()); | |||
383 | ||||
384 | std::vector<std::string> Manglings; | |||
385 | ||||
386 | auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) { | |||
387 | auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false, | |||
388 | /*IsCXXMethod=*/true); | |||
389 | auto CC = MD->getType()->getAs<FunctionProtoType>()->getCallConv(); | |||
| ||||
390 | return CC == DefaultCC; | |||
391 | }; | |||
392 | ||||
393 | if (const auto *CD
| |||
394 | Manglings.emplace_back(getMangledStructor(CD, Ctor_Base)); | |||
395 | ||||
396 | if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) | |||
397 | if (!CD->getParent()->isAbstract()) | |||
398 | Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete)); | |||
399 | ||||
400 | if (Ctx.getTargetInfo().getCXXABI().isMicrosoft()) | |||
401 | if (CD->hasAttr<DLLExportAttr>() && CD->isDefaultConstructor()) | |||
402 | if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0)) | |||
403 | Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure)); | |||
404 | } else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) { | |||
405 | Manglings.emplace_back(getMangledStructor(DD, Dtor_Base)); | |||
406 | if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) { | |||
407 | Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete)); | |||
408 | if (DD->isVirtual()) | |||
409 | Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting)); | |||
410 | } | |||
411 | } else if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(ND)) { | |||
412 | Manglings.emplace_back(getName(ND)); | |||
413 | if (MD->isVirtual()) | |||
414 | if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD)) | |||
415 | for (const auto &T : *TIV) | |||
416 | Manglings.emplace_back(getMangledThunk(MD, T)); | |||
417 | } | |||
418 | ||||
419 | return Manglings; | |||
420 | } | |||
421 | ||||
422 | private: | |||
423 | bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) { | |||
424 | if (MC->shouldMangleDeclName(D)) { | |||
425 | if (const auto *CtorD = dyn_cast<CXXConstructorDecl>(D)) | |||
426 | MC->mangleCXXCtor(CtorD, Ctor_Complete, OS); | |||
427 | else if (const auto *DtorD = dyn_cast<CXXDestructorDecl>(D)) | |||
428 | MC->mangleCXXDtor(DtorD, Dtor_Complete, OS); | |||
429 | else | |||
430 | MC->mangleName(D, OS); | |||
431 | return false; | |||
432 | } else { | |||
433 | IdentifierInfo *II = D->getIdentifier(); | |||
434 | if (!II) | |||
435 | return true; | |||
436 | OS << II->getName(); | |||
437 | return false; | |||
438 | } | |||
439 | } | |||
440 | ||||
441 | void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS) { | |||
442 | OS << getClassSymbolPrefix(ObjCClass, D->getASTContext()); | |||
443 | OS << D->getObjCRuntimeNameAsString(); | |||
444 | } | |||
445 | ||||
446 | std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType) { | |||
447 | std::string FrontendBuf; | |||
448 | llvm::raw_string_ostream FOS(FrontendBuf); | |||
449 | ||||
450 | if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) | |||
451 | MC->mangleCXXCtor(CD, static_cast<CXXCtorType>(StructorType), FOS); | |||
452 | else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) | |||
453 | MC->mangleCXXDtor(DD, static_cast<CXXDtorType>(StructorType), FOS); | |||
454 | ||||
455 | std::string BackendBuf; | |||
456 | llvm::raw_string_ostream BOS(BackendBuf); | |||
457 | ||||
458 | llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL); | |||
459 | ||||
460 | return BOS.str(); | |||
461 | } | |||
462 | ||||
463 | std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T) { | |||
464 | std::string FrontendBuf; | |||
465 | llvm::raw_string_ostream FOS(FrontendBuf); | |||
466 | ||||
467 | MC->mangleThunk(MD, T, FOS); | |||
468 | ||||
469 | std::string BackendBuf; | |||
470 | llvm::raw_string_ostream BOS(BackendBuf); | |||
471 | ||||
472 | llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL); | |||
473 | ||||
474 | return BOS.str(); | |||
475 | } | |||
476 | }; | |||
477 | ||||
478 | ASTNameGenerator::ASTNameGenerator(ASTContext &Ctx) | |||
479 | : Impl(std::make_unique<Implementation>(Ctx)) {} | |||
480 | ||||
481 | ASTNameGenerator::~ASTNameGenerator() {} | |||
482 | ||||
483 | bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) { | |||
484 | return Impl->writeName(D, OS); | |||
485 | } | |||
486 | ||||
487 | std::string ASTNameGenerator::getName(const Decl *D) { | |||
488 | return Impl->getName(D); | |||
489 | } | |||
490 | ||||
491 | std::vector<std::string> ASTNameGenerator::getAllManglings(const Decl *D) { | |||
492 | return Impl->getAllManglings(D); | |||
| ||||
493 | } |