File: | tools/clang/include/clang/Sema/Sema.h |
Warning: | line 274, column 7 Excessive padding in 'class clang::Sema' (75 padding bytes, where 3 is optimal). Optimal fields order: ExternalSource, LangOpts, PP, Context, Consumer, Diags, SourceMgr, CodeCompleter, CurContext, OriginalLexicalContext, VAListTagName, CurInitSeg, VisContext, PragmaAttributeCurrentTargetDecl, PreallocatedFunctionScope, FieldCollector, PureVirtualClassDiagSet, LateTemplateParser, LateTemplateParserCleanup, OpaqueParser, DelayedDiagnostics, TUScope, StdNamespace, StdBadAlloc, StdAlignValT, StdExperimentalNamespaceCache, StdInitializerList, CXXTypeInfoDecl, MSVCGuidDecl, NSAPIObj, NSNumberDecl, NSValueDecl, NSNumberPointer, NSValuePointer, NSStringDecl, NSStringPointer, StringWithUTF8StringMethod, ValueWithBytesObjCTypeMethod, NSArrayDecl, ArrayWithObjectsMethod, NSDictionaryDecl, DictionaryWithObjectsMethod, QIDNSCopying, RespondsToSelectorSel, CXXThisTypeOverride, CurrentInstantiationScope, ThreadSafetyDeclCache, VarDataSharingAttributesStack, TypeTagForDatatypeMagicValues, CurScope, Ident_super, Ident___float128, Ident__Nonnull, Ident__Nullable, Ident__Null_unspecified, Ident_NSError, SemaPPCallbackHandler, CFError, IdResolver, SpecialMemberCache, TemplateInstCallbacks, OpenCLFeatures, ExtnameUndeclaredIdentifiers, FlagBitsCache, UnparsedDefaultArgInstantiations, UnparsedDefaultArgLocs, MethodPool, VisibleModules, ShadowingDecls, VTablesUsed, InstantiatingSpecializations, InstantiatedNonDependentTypes, LookupModulesCache, VisibleNamespaceCache, SuppressedDiagnostics, TypoCorrectionFailures, CurrOpenCLExtension, OpenCLTypeExtMap, OpenCLDeclExtMap, CUDADeferredDiags, LocsWithCUDACallDiags, CUDAKnownEmittedFns, CUDACallGraph, CurrentSEHFinally, PragmaClangBSSSection, PragmaClangDataSection, PragmaClangRodataSection, PragmaClangTextSection, WeakTopLevelDecl, NullabilityMap, LateParsedInstantiations, MaybeODRUseExprs, FunctionScopes, DeleteExprs, DelayedExceptionSpecChecks, DelayedDefaultedMemberExceptionSpecs, LateParsedTemplateMap, WeakUndeclaredIdentifiers, UndefinedButUsed, ReferencedSelectors, CurrentParameterCopyTypes, DelayedTypos, KnownNamespaces, DelayedDllExportClasses, ParsingInitForAutoVars, SpecialMembersBeingDeclared, TypoCorrectedFunctionDefinitions, ExtVectorDecls, TentativeDefinitions, UnusedFileScopedDecls, DelegatingCtorDecls, PendingInstantiations, PendingLocalImplicitInstantiations, ExprCleanupObjects, AnalysisWarnings, VtorDispStack, PackStack, UnusedLocalTypedefNameCandidates, DataSegStack, BSSSegStack, ConstSegStack, CodeSegStack, PackIncludeStack, NSNumberLiteralMethods, BumpAlloc, PragmaAttributeStack, CodeSynthesisContextLookupModules, MisalignedMembers, VTableUses, UnusedPrivateFields, ModuleScopes, CodeSynthesisContexts, ExprEvalContexts, FPFeatures, MSPointerToMemberRepresentationMethod, ImplicitMSInheritanceAttrLoc, CurInitSegLoc, OptimizeOffPragmaLocation, TUKind, NumSFINAEErrors, NonInstantiationEntries, LastEmittedCodeSynthesisContextDepth, ArgumentPackSubstitutionIndex, TyposCorrected, ForceCUDAHostDeviceDepth, isMultiplexExternalSource, CollectStats, MSStructPragmaOn, IsBuildingRecoveryCallExpr, GlobalNewDeleteDeclared, AllowAbstractFieldReference, LoadedExternalKnownNamespaces, AccessCheckingSFINAE, InNonInstantiationSFINAEContext, DisableTypoCorrection, IsInOpenMPDeclareTargetContext, Cleanup, consider reordering the fields or adding explicit padding members |
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1 | //===--- Sema.h - Semantic Analysis & AST Building --------------*- C++ -*-===// |
2 | // |
3 | // The LLVM Compiler Infrastructure |
4 | // |
5 | // This file is distributed under the University of Illinois Open Source |
6 | // License. See LICENSE.TXT for details. |
7 | // |
8 | //===----------------------------------------------------------------------===// |
9 | // |
10 | // This file defines the Sema class, which performs semantic analysis and |
11 | // builds ASTs. |
12 | // |
13 | //===----------------------------------------------------------------------===// |
14 | |
15 | #ifndef LLVM_CLANG_SEMA_SEMA_H |
16 | #define LLVM_CLANG_SEMA_SEMA_H |
17 | |
18 | #include "clang/AST/Attr.h" |
19 | #include "clang/AST/Availability.h" |
20 | #include "clang/AST/DeclarationName.h" |
21 | #include "clang/AST/DeclTemplate.h" |
22 | #include "clang/AST/Expr.h" |
23 | #include "clang/AST/ExprObjC.h" |
24 | #include "clang/AST/ExternalASTSource.h" |
25 | #include "clang/AST/LocInfoType.h" |
26 | #include "clang/AST/MangleNumberingContext.h" |
27 | #include "clang/AST/NSAPI.h" |
28 | #include "clang/AST/PrettyPrinter.h" |
29 | #include "clang/AST/StmtCXX.h" |
30 | #include "clang/AST/TypeLoc.h" |
31 | #include "clang/AST/TypeOrdering.h" |
32 | #include "clang/Basic/ExpressionTraits.h" |
33 | #include "clang/Basic/Module.h" |
34 | #include "clang/Basic/OpenMPKinds.h" |
35 | #include "clang/Basic/PragmaKinds.h" |
36 | #include "clang/Basic/Specifiers.h" |
37 | #include "clang/Basic/TemplateKinds.h" |
38 | #include "clang/Basic/TypeTraits.h" |
39 | #include "clang/Sema/AnalysisBasedWarnings.h" |
40 | #include "clang/Sema/CleanupInfo.h" |
41 | #include "clang/Sema/DeclSpec.h" |
42 | #include "clang/Sema/ExternalSemaSource.h" |
43 | #include "clang/Sema/IdentifierResolver.h" |
44 | #include "clang/Sema/ObjCMethodList.h" |
45 | #include "clang/Sema/Ownership.h" |
46 | #include "clang/Sema/Scope.h" |
47 | #include "clang/Sema/TypoCorrection.h" |
48 | #include "clang/Sema/Weak.h" |
49 | #include "llvm/ADT/ArrayRef.h" |
50 | #include "llvm/ADT/Optional.h" |
51 | #include "llvm/ADT/SetVector.h" |
52 | #include "llvm/ADT/SmallPtrSet.h" |
53 | #include "llvm/ADT/SmallVector.h" |
54 | #include "llvm/ADT/TinyPtrVector.h" |
55 | #include <deque> |
56 | #include <memory> |
57 | #include <string> |
58 | #include <vector> |
59 | |
60 | namespace llvm { |
61 | class APSInt; |
62 | template <typename ValueT> struct DenseMapInfo; |
63 | template <typename ValueT, typename ValueInfoT> class DenseSet; |
64 | class SmallBitVector; |
65 | struct InlineAsmIdentifierInfo; |
66 | } |
67 | |
68 | namespace clang { |
69 | class ADLResult; |
70 | class ASTConsumer; |
71 | class ASTContext; |
72 | class ASTMutationListener; |
73 | class ASTReader; |
74 | class ASTWriter; |
75 | class ArrayType; |
76 | class AttributeList; |
77 | class BindingDecl; |
78 | class BlockDecl; |
79 | class CapturedDecl; |
80 | class CXXBasePath; |
81 | class CXXBasePaths; |
82 | class CXXBindTemporaryExpr; |
83 | typedef SmallVector<CXXBaseSpecifier*, 4> CXXCastPath; |
84 | class CXXConstructorDecl; |
85 | class CXXConversionDecl; |
86 | class CXXDeleteExpr; |
87 | class CXXDestructorDecl; |
88 | class CXXFieldCollector; |
89 | class CXXMemberCallExpr; |
90 | class CXXMethodDecl; |
91 | class CXXScopeSpec; |
92 | class CXXTemporary; |
93 | class CXXTryStmt; |
94 | class CallExpr; |
95 | class ClassTemplateDecl; |
96 | class ClassTemplatePartialSpecializationDecl; |
97 | class ClassTemplateSpecializationDecl; |
98 | class VarTemplatePartialSpecializationDecl; |
99 | class CodeCompleteConsumer; |
100 | class CodeCompletionAllocator; |
101 | class CodeCompletionTUInfo; |
102 | class CodeCompletionResult; |
103 | class CoroutineBodyStmt; |
104 | class Decl; |
105 | class DeclAccessPair; |
106 | class DeclContext; |
107 | class DeclRefExpr; |
108 | class DeclaratorDecl; |
109 | class DeducedTemplateArgument; |
110 | class DependentDiagnostic; |
111 | class DesignatedInitExpr; |
112 | class Designation; |
113 | class EnableIfAttr; |
114 | class EnumConstantDecl; |
115 | class Expr; |
116 | class ExtVectorType; |
117 | class FormatAttr; |
118 | class FriendDecl; |
119 | class FunctionDecl; |
120 | class FunctionProtoType; |
121 | class FunctionTemplateDecl; |
122 | class ImplicitConversionSequence; |
123 | typedef MutableArrayRef<ImplicitConversionSequence> ConversionSequenceList; |
124 | class InitListExpr; |
125 | class InitializationKind; |
126 | class InitializationSequence; |
127 | class InitializedEntity; |
128 | class IntegerLiteral; |
129 | class LabelStmt; |
130 | class LambdaExpr; |
131 | class LangOptions; |
132 | class LocalInstantiationScope; |
133 | class LookupResult; |
134 | class MacroInfo; |
135 | typedef ArrayRef<std::pair<IdentifierInfo *, SourceLocation>> ModuleIdPath; |
136 | class ModuleLoader; |
137 | class MultiLevelTemplateArgumentList; |
138 | class NamedDecl; |
139 | class ObjCCategoryDecl; |
140 | class ObjCCategoryImplDecl; |
141 | class ObjCCompatibleAliasDecl; |
142 | class ObjCContainerDecl; |
143 | class ObjCImplDecl; |
144 | class ObjCImplementationDecl; |
145 | class ObjCInterfaceDecl; |
146 | class ObjCIvarDecl; |
147 | template <class T> class ObjCList; |
148 | class ObjCMessageExpr; |
149 | class ObjCMethodDecl; |
150 | class ObjCPropertyDecl; |
151 | class ObjCProtocolDecl; |
152 | class OMPThreadPrivateDecl; |
153 | class OMPDeclareReductionDecl; |
154 | class OMPDeclareSimdDecl; |
155 | class OMPClause; |
156 | struct OverloadCandidate; |
157 | class OverloadCandidateSet; |
158 | class OverloadExpr; |
159 | class ParenListExpr; |
160 | class ParmVarDecl; |
161 | class Preprocessor; |
162 | class PseudoDestructorTypeStorage; |
163 | class PseudoObjectExpr; |
164 | class QualType; |
165 | class StandardConversionSequence; |
166 | class Stmt; |
167 | class StringLiteral; |
168 | class SwitchStmt; |
169 | class TemplateArgument; |
170 | class TemplateArgumentList; |
171 | class TemplateArgumentLoc; |
172 | class TemplateDecl; |
173 | class TemplateInstantiationCallback; |
174 | class TemplateParameterList; |
175 | class TemplatePartialOrderingContext; |
176 | class TemplateTemplateParmDecl; |
177 | class Token; |
178 | class TypeAliasDecl; |
179 | class TypedefDecl; |
180 | class TypedefNameDecl; |
181 | class TypeLoc; |
182 | class TypoCorrectionConsumer; |
183 | class UnqualifiedId; |
184 | class UnresolvedLookupExpr; |
185 | class UnresolvedMemberExpr; |
186 | class UnresolvedSetImpl; |
187 | class UnresolvedSetIterator; |
188 | class UsingDecl; |
189 | class UsingShadowDecl; |
190 | class ValueDecl; |
191 | class VarDecl; |
192 | class VarTemplateSpecializationDecl; |
193 | class VisibilityAttr; |
194 | class VisibleDeclConsumer; |
195 | class IndirectFieldDecl; |
196 | struct DeductionFailureInfo; |
197 | class TemplateSpecCandidateSet; |
198 | |
199 | namespace sema { |
200 | class AccessedEntity; |
201 | class BlockScopeInfo; |
202 | class Capture; |
203 | class CapturedRegionScopeInfo; |
204 | class CapturingScopeInfo; |
205 | class CompoundScopeInfo; |
206 | class DelayedDiagnostic; |
207 | class DelayedDiagnosticPool; |
208 | class FunctionScopeInfo; |
209 | class LambdaScopeInfo; |
210 | class PossiblyUnreachableDiag; |
211 | class SemaPPCallbacks; |
212 | class TemplateDeductionInfo; |
213 | } |
214 | |
215 | namespace threadSafety { |
216 | class BeforeSet; |
217 | void threadSafetyCleanup(BeforeSet* Cache); |
218 | } |
219 | |
220 | // FIXME: No way to easily map from TemplateTypeParmTypes to |
221 | // TemplateTypeParmDecls, so we have this horrible PointerUnion. |
222 | typedef std::pair<llvm::PointerUnion<const TemplateTypeParmType*, NamedDecl*>, |
223 | SourceLocation> UnexpandedParameterPack; |
224 | |
225 | /// Describes whether we've seen any nullability information for the given |
226 | /// file. |
227 | struct FileNullability { |
228 | /// The first pointer declarator (of any pointer kind) in the file that does |
229 | /// not have a corresponding nullability annotation. |
230 | SourceLocation PointerLoc; |
231 | |
232 | /// The end location for the first pointer declarator in the file. Used for |
233 | /// placing fix-its. |
234 | SourceLocation PointerEndLoc; |
235 | |
236 | /// Which kind of pointer declarator we saw. |
237 | uint8_t PointerKind; |
238 | |
239 | /// Whether we saw any type nullability annotations in the given file. |
240 | bool SawTypeNullability = false; |
241 | }; |
242 | |
243 | /// A mapping from file IDs to a record of whether we've seen nullability |
244 | /// information in that file. |
245 | class FileNullabilityMap { |
246 | /// A mapping from file IDs to the nullability information for each file ID. |
247 | llvm::DenseMap<FileID, FileNullability> Map; |
248 | |
249 | /// A single-element cache based on the file ID. |
250 | struct { |
251 | FileID File; |
252 | FileNullability Nullability; |
253 | } Cache; |
254 | |
255 | public: |
256 | FileNullability &operator[](FileID file) { |
257 | // Check the single-element cache. |
258 | if (file == Cache.File) |
259 | return Cache.Nullability; |
260 | |
261 | // It's not in the single-element cache; flush the cache if we have one. |
262 | if (!Cache.File.isInvalid()) { |
263 | Map[Cache.File] = Cache.Nullability; |
264 | } |
265 | |
266 | // Pull this entry into the cache. |
267 | Cache.File = file; |
268 | Cache.Nullability = Map[file]; |
269 | return Cache.Nullability; |
270 | } |
271 | }; |
272 | |
273 | /// Sema - This implements semantic analysis and AST building for C. |
274 | class Sema { |
Excessive padding in 'class clang::Sema' (75 padding bytes, where 3 is optimal).
Optimal fields order:
ExternalSource,
LangOpts,
PP,
Context,
Consumer,
Diags,
SourceMgr,
CodeCompleter,
CurContext,
OriginalLexicalContext,
VAListTagName,
CurInitSeg,
VisContext,
PragmaAttributeCurrentTargetDecl,
PreallocatedFunctionScope,
FieldCollector,
PureVirtualClassDiagSet,
LateTemplateParser,
LateTemplateParserCleanup,
OpaqueParser,
DelayedDiagnostics,
TUScope,
StdNamespace,
StdBadAlloc,
StdAlignValT,
StdExperimentalNamespaceCache,
StdInitializerList,
CXXTypeInfoDecl,
MSVCGuidDecl,
NSAPIObj,
NSNumberDecl,
NSValueDecl,
NSNumberPointer,
NSValuePointer,
NSStringDecl,
NSStringPointer,
StringWithUTF8StringMethod,
ValueWithBytesObjCTypeMethod,
NSArrayDecl,
ArrayWithObjectsMethod,
NSDictionaryDecl,
DictionaryWithObjectsMethod,
QIDNSCopying,
RespondsToSelectorSel,
CXXThisTypeOverride,
CurrentInstantiationScope,
ThreadSafetyDeclCache,
VarDataSharingAttributesStack,
TypeTagForDatatypeMagicValues,
CurScope,
Ident_super,
Ident___float128,
Ident__Nonnull,
Ident__Nullable,
Ident__Null_unspecified,
Ident_NSError,
SemaPPCallbackHandler,
CFError,
IdResolver,
SpecialMemberCache,
TemplateInstCallbacks,
OpenCLFeatures,
ExtnameUndeclaredIdentifiers,
FlagBitsCache,
UnparsedDefaultArgInstantiations,
UnparsedDefaultArgLocs,
MethodPool,
VisibleModules,
ShadowingDecls,
VTablesUsed,
InstantiatingSpecializations,
InstantiatedNonDependentTypes,
LookupModulesCache,
VisibleNamespaceCache,
SuppressedDiagnostics,
TypoCorrectionFailures,
CurrOpenCLExtension,
OpenCLTypeExtMap,
OpenCLDeclExtMap,
CUDADeferredDiags,
LocsWithCUDACallDiags,
CUDAKnownEmittedFns,
CUDACallGraph,
CurrentSEHFinally,
PragmaClangBSSSection,
PragmaClangDataSection,
PragmaClangRodataSection,
PragmaClangTextSection,
WeakTopLevelDecl,
NullabilityMap,
LateParsedInstantiations,
MaybeODRUseExprs,
FunctionScopes,
DeleteExprs,
DelayedExceptionSpecChecks,
DelayedDefaultedMemberExceptionSpecs,
LateParsedTemplateMap,
WeakUndeclaredIdentifiers,
UndefinedButUsed,
ReferencedSelectors,
CurrentParameterCopyTypes,
DelayedTypos,
KnownNamespaces,
DelayedDllExportClasses,
ParsingInitForAutoVars,
SpecialMembersBeingDeclared,
TypoCorrectedFunctionDefinitions,
ExtVectorDecls,
TentativeDefinitions,
UnusedFileScopedDecls,
DelegatingCtorDecls,
PendingInstantiations,
PendingLocalImplicitInstantiations,
ExprCleanupObjects,
AnalysisWarnings,
VtorDispStack,
PackStack,
UnusedLocalTypedefNameCandidates,
DataSegStack,
BSSSegStack,
ConstSegStack,
CodeSegStack,
PackIncludeStack,
NSNumberLiteralMethods,
BumpAlloc,
PragmaAttributeStack,
CodeSynthesisContextLookupModules,
MisalignedMembers,
VTableUses,
UnusedPrivateFields,
ModuleScopes,
CodeSynthesisContexts,
ExprEvalContexts,
FPFeatures,
MSPointerToMemberRepresentationMethod,
ImplicitMSInheritanceAttrLoc,
CurInitSegLoc,
OptimizeOffPragmaLocation,
TUKind,
NumSFINAEErrors,
NonInstantiationEntries,
LastEmittedCodeSynthesisContextDepth,
ArgumentPackSubstitutionIndex,
TyposCorrected,
ForceCUDAHostDeviceDepth,
isMultiplexExternalSource,
CollectStats,
MSStructPragmaOn,
IsBuildingRecoveryCallExpr,
GlobalNewDeleteDeclared,
AllowAbstractFieldReference,
LoadedExternalKnownNamespaces,
AccessCheckingSFINAE,
InNonInstantiationSFINAEContext,
DisableTypoCorrection,
IsInOpenMPDeclareTargetContext,
Cleanup,
consider reordering the fields or adding explicit padding members | |
275 | Sema(const Sema &) = delete; |
276 | void operator=(const Sema &) = delete; |
277 | |
278 | ///\brief Source of additional semantic information. |
279 | ExternalSemaSource *ExternalSource; |
280 | |
281 | ///\brief Whether Sema has generated a multiplexer and has to delete it. |
282 | bool isMultiplexExternalSource; |
283 | |
284 | static bool mightHaveNonExternalLinkage(const DeclaratorDecl *FD); |
285 | |
286 | bool isVisibleSlow(const NamedDecl *D); |
287 | |
288 | /// Determine whether two declarations should be linked together, given that |
289 | /// the old declaration might not be visible and the new declaration might |
290 | /// not have external linkage. |
291 | bool shouldLinkPossiblyHiddenDecl(const NamedDecl *Old, |
292 | const NamedDecl *New) { |
293 | if (isVisible(Old)) |
294 | return true; |
295 | // See comment in below overload for why it's safe to compute the linkage |
296 | // of the new declaration here. |
297 | if (New->isExternallyDeclarable()) { |
298 | assert(Old->isExternallyDeclarable() &&(static_cast <bool> (Old->isExternallyDeclarable() && "should not have found a non-externally-declarable previous decl" ) ? void (0) : __assert_fail ("Old->isExternallyDeclarable() && \"should not have found a non-externally-declarable previous decl\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 299, __extension__ __PRETTY_FUNCTION__)) |
299 | "should not have found a non-externally-declarable previous decl")(static_cast <bool> (Old->isExternallyDeclarable() && "should not have found a non-externally-declarable previous decl" ) ? void (0) : __assert_fail ("Old->isExternallyDeclarable() && \"should not have found a non-externally-declarable previous decl\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 299, __extension__ __PRETTY_FUNCTION__)); |
300 | return true; |
301 | } |
302 | return false; |
303 | } |
304 | bool shouldLinkPossiblyHiddenDecl(LookupResult &Old, const NamedDecl *New); |
305 | |
306 | public: |
307 | typedef OpaquePtr<DeclGroupRef> DeclGroupPtrTy; |
308 | typedef OpaquePtr<TemplateName> TemplateTy; |
309 | typedef OpaquePtr<QualType> TypeTy; |
310 | |
311 | OpenCLOptions OpenCLFeatures; |
312 | FPOptions FPFeatures; |
313 | |
314 | const LangOptions &LangOpts; |
315 | Preprocessor &PP; |
316 | ASTContext &Context; |
317 | ASTConsumer &Consumer; |
318 | DiagnosticsEngine &Diags; |
319 | SourceManager &SourceMgr; |
320 | |
321 | /// \brief Flag indicating whether or not to collect detailed statistics. |
322 | bool CollectStats; |
323 | |
324 | /// \brief Code-completion consumer. |
325 | CodeCompleteConsumer *CodeCompleter; |
326 | |
327 | /// CurContext - This is the current declaration context of parsing. |
328 | DeclContext *CurContext; |
329 | |
330 | /// \brief Generally null except when we temporarily switch decl contexts, |
331 | /// like in \see ActOnObjCTemporaryExitContainerContext. |
332 | DeclContext *OriginalLexicalContext; |
333 | |
334 | /// VAListTagName - The declaration name corresponding to __va_list_tag. |
335 | /// This is used as part of a hack to omit that class from ADL results. |
336 | DeclarationName VAListTagName; |
337 | |
338 | bool MSStructPragmaOn; // True when \#pragma ms_struct on |
339 | |
340 | /// \brief Controls member pointer representation format under the MS ABI. |
341 | LangOptions::PragmaMSPointersToMembersKind |
342 | MSPointerToMemberRepresentationMethod; |
343 | |
344 | /// Stack of active SEH __finally scopes. Can be empty. |
345 | SmallVector<Scope*, 2> CurrentSEHFinally; |
346 | |
347 | /// \brief Source location for newly created implicit MSInheritanceAttrs |
348 | SourceLocation ImplicitMSInheritanceAttrLoc; |
349 | |
350 | /// \brief pragma clang section kind |
351 | enum PragmaClangSectionKind { |
352 | PCSK_Invalid = 0, |
353 | PCSK_BSS = 1, |
354 | PCSK_Data = 2, |
355 | PCSK_Rodata = 3, |
356 | PCSK_Text = 4 |
357 | }; |
358 | |
359 | enum PragmaClangSectionAction { |
360 | PCSA_Set = 0, |
361 | PCSA_Clear = 1 |
362 | }; |
363 | |
364 | struct PragmaClangSection { |
365 | std::string SectionName; |
366 | bool Valid = false; |
367 | SourceLocation PragmaLocation; |
368 | |
369 | void Act(SourceLocation PragmaLocation, |
370 | PragmaClangSectionAction Action, |
371 | StringLiteral* Name); |
372 | }; |
373 | |
374 | PragmaClangSection PragmaClangBSSSection; |
375 | PragmaClangSection PragmaClangDataSection; |
376 | PragmaClangSection PragmaClangRodataSection; |
377 | PragmaClangSection PragmaClangTextSection; |
378 | |
379 | enum PragmaMsStackAction { |
380 | PSK_Reset = 0x0, // #pragma () |
381 | PSK_Set = 0x1, // #pragma (value) |
382 | PSK_Push = 0x2, // #pragma (push[, id]) |
383 | PSK_Pop = 0x4, // #pragma (pop[, id]) |
384 | PSK_Show = 0x8, // #pragma (show) -- only for "pack"! |
385 | PSK_Push_Set = PSK_Push | PSK_Set, // #pragma (push[, id], value) |
386 | PSK_Pop_Set = PSK_Pop | PSK_Set, // #pragma (pop[, id], value) |
387 | }; |
388 | |
389 | template<typename ValueType> |
390 | struct PragmaStack { |
391 | struct Slot { |
392 | llvm::StringRef StackSlotLabel; |
393 | ValueType Value; |
394 | SourceLocation PragmaLocation; |
395 | SourceLocation PragmaPushLocation; |
396 | Slot(llvm::StringRef StackSlotLabel, ValueType Value, |
397 | SourceLocation PragmaLocation, SourceLocation PragmaPushLocation) |
398 | : StackSlotLabel(StackSlotLabel), Value(Value), |
399 | PragmaLocation(PragmaLocation), |
400 | PragmaPushLocation(PragmaPushLocation) {} |
401 | }; |
402 | void Act(SourceLocation PragmaLocation, |
403 | PragmaMsStackAction Action, |
404 | llvm::StringRef StackSlotLabel, |
405 | ValueType Value); |
406 | |
407 | // MSVC seems to add artificial slots to #pragma stacks on entering a C++ |
408 | // method body to restore the stacks on exit, so it works like this: |
409 | // |
410 | // struct S { |
411 | // #pragma <name>(push, InternalPragmaSlot, <current_pragma_value>) |
412 | // void Method {} |
413 | // #pragma <name>(pop, InternalPragmaSlot) |
414 | // }; |
415 | // |
416 | // It works even with #pragma vtordisp, although MSVC doesn't support |
417 | // #pragma vtordisp(push [, id], n) |
418 | // syntax. |
419 | // |
420 | // Push / pop a named sentinel slot. |
421 | void SentinelAction(PragmaMsStackAction Action, StringRef Label) { |
422 | assert((Action == PSK_Push || Action == PSK_Pop) &&(static_cast <bool> ((Action == PSK_Push || Action == PSK_Pop ) && "Can only push / pop #pragma stack sentinels!") ? void (0) : __assert_fail ("(Action == PSK_Push || Action == PSK_Pop) && \"Can only push / pop #pragma stack sentinels!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 423, __extension__ __PRETTY_FUNCTION__)) |
423 | "Can only push / pop #pragma stack sentinels!")(static_cast <bool> ((Action == PSK_Push || Action == PSK_Pop ) && "Can only push / pop #pragma stack sentinels!") ? void (0) : __assert_fail ("(Action == PSK_Push || Action == PSK_Pop) && \"Can only push / pop #pragma stack sentinels!\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 423, __extension__ __PRETTY_FUNCTION__)); |
424 | Act(CurrentPragmaLocation, Action, Label, CurrentValue); |
425 | } |
426 | |
427 | // Constructors. |
428 | explicit PragmaStack(const ValueType &Default) |
429 | : DefaultValue(Default), CurrentValue(Default) {} |
430 | |
431 | bool hasValue() const { return CurrentValue != DefaultValue; } |
432 | |
433 | SmallVector<Slot, 2> Stack; |
434 | ValueType DefaultValue; // Value used for PSK_Reset action. |
435 | ValueType CurrentValue; |
436 | SourceLocation CurrentPragmaLocation; |
437 | }; |
438 | // FIXME: We should serialize / deserialize these if they occur in a PCH (but |
439 | // we shouldn't do so if they're in a module). |
440 | |
441 | /// \brief Whether to insert vtordisps prior to virtual bases in the Microsoft |
442 | /// C++ ABI. Possible values are 0, 1, and 2, which mean: |
443 | /// |
444 | /// 0: Suppress all vtordisps |
445 | /// 1: Insert vtordisps in the presence of vbase overrides and non-trivial |
446 | /// structors |
447 | /// 2: Always insert vtordisps to support RTTI on partially constructed |
448 | /// objects |
449 | PragmaStack<MSVtorDispAttr::Mode> VtorDispStack; |
450 | // #pragma pack. |
451 | // Sentinel to represent when the stack is set to mac68k alignment. |
452 | static const unsigned kMac68kAlignmentSentinel = ~0U; |
453 | PragmaStack<unsigned> PackStack; |
454 | // The current #pragma pack values and locations at each #include. |
455 | struct PackIncludeState { |
456 | unsigned CurrentValue; |
457 | SourceLocation CurrentPragmaLocation; |
458 | bool HasNonDefaultValue, ShouldWarnOnInclude; |
459 | }; |
460 | SmallVector<PackIncludeState, 8> PackIncludeStack; |
461 | // Segment #pragmas. |
462 | PragmaStack<StringLiteral *> DataSegStack; |
463 | PragmaStack<StringLiteral *> BSSSegStack; |
464 | PragmaStack<StringLiteral *> ConstSegStack; |
465 | PragmaStack<StringLiteral *> CodeSegStack; |
466 | |
467 | // RAII object to push / pop sentinel slots for all MS #pragma stacks. |
468 | // Actions should be performed only if we enter / exit a C++ method body. |
469 | class PragmaStackSentinelRAII { |
470 | public: |
471 | PragmaStackSentinelRAII(Sema &S, StringRef SlotLabel, bool ShouldAct); |
472 | ~PragmaStackSentinelRAII(); |
473 | |
474 | private: |
475 | Sema &S; |
476 | StringRef SlotLabel; |
477 | bool ShouldAct; |
478 | }; |
479 | |
480 | /// A mapping that describes the nullability we've seen in each header file. |
481 | FileNullabilityMap NullabilityMap; |
482 | |
483 | /// Last section used with #pragma init_seg. |
484 | StringLiteral *CurInitSeg; |
485 | SourceLocation CurInitSegLoc; |
486 | |
487 | /// VisContext - Manages the stack for \#pragma GCC visibility. |
488 | void *VisContext; // Really a "PragmaVisStack*" |
489 | |
490 | /// \brief This represents the stack of attributes that were pushed by |
491 | /// \#pragma clang attribute. |
492 | struct PragmaAttributeEntry { |
493 | SourceLocation Loc; |
494 | AttributeList *Attribute; |
495 | SmallVector<attr::SubjectMatchRule, 4> MatchRules; |
496 | bool IsUsed; |
497 | }; |
498 | SmallVector<PragmaAttributeEntry, 2> PragmaAttributeStack; |
499 | |
500 | /// \brief The declaration that is currently receiving an attribute from the |
501 | /// #pragma attribute stack. |
502 | const Decl *PragmaAttributeCurrentTargetDecl; |
503 | |
504 | /// \brief This represents the last location of a "#pragma clang optimize off" |
505 | /// directive if such a directive has not been closed by an "on" yet. If |
506 | /// optimizations are currently "on", this is set to an invalid location. |
507 | SourceLocation OptimizeOffPragmaLocation; |
508 | |
509 | /// \brief Flag indicating if Sema is building a recovery call expression. |
510 | /// |
511 | /// This flag is used to avoid building recovery call expressions |
512 | /// if Sema is already doing so, which would cause infinite recursions. |
513 | bool IsBuildingRecoveryCallExpr; |
514 | |
515 | /// Used to control the generation of ExprWithCleanups. |
516 | CleanupInfo Cleanup; |
517 | |
518 | /// ExprCleanupObjects - This is the stack of objects requiring |
519 | /// cleanup that are created by the current full expression. The |
520 | /// element type here is ExprWithCleanups::Object. |
521 | SmallVector<BlockDecl*, 8> ExprCleanupObjects; |
522 | |
523 | /// \brief Store a list of either DeclRefExprs or MemberExprs |
524 | /// that contain a reference to a variable (constant) that may or may not |
525 | /// be odr-used in this Expr, and we won't know until all lvalue-to-rvalue |
526 | /// and discarded value conversions have been applied to all subexpressions |
527 | /// of the enclosing full expression. This is cleared at the end of each |
528 | /// full expression. |
529 | llvm::SmallPtrSet<Expr*, 2> MaybeODRUseExprs; |
530 | |
531 | std::unique_ptr<sema::FunctionScopeInfo> PreallocatedFunctionScope; |
532 | |
533 | /// \brief Stack containing information about each of the nested |
534 | /// function, block, and method scopes that are currently active. |
535 | SmallVector<sema::FunctionScopeInfo *, 4> FunctionScopes; |
536 | |
537 | typedef LazyVector<TypedefNameDecl *, ExternalSemaSource, |
538 | &ExternalSemaSource::ReadExtVectorDecls, 2, 2> |
539 | ExtVectorDeclsType; |
540 | |
541 | /// ExtVectorDecls - This is a list all the extended vector types. This allows |
542 | /// us to associate a raw vector type with one of the ext_vector type names. |
543 | /// This is only necessary for issuing pretty diagnostics. |
544 | ExtVectorDeclsType ExtVectorDecls; |
545 | |
546 | /// FieldCollector - Collects CXXFieldDecls during parsing of C++ classes. |
547 | std::unique_ptr<CXXFieldCollector> FieldCollector; |
548 | |
549 | typedef llvm::SmallSetVector<NamedDecl *, 16> NamedDeclSetType; |
550 | |
551 | /// \brief Set containing all declared private fields that are not used. |
552 | NamedDeclSetType UnusedPrivateFields; |
553 | |
554 | /// \brief Set containing all typedefs that are likely unused. |
555 | llvm::SmallSetVector<const TypedefNameDecl *, 4> |
556 | UnusedLocalTypedefNameCandidates; |
557 | |
558 | /// \brief Delete-expressions to be analyzed at the end of translation unit |
559 | /// |
560 | /// This list contains class members, and locations of delete-expressions |
561 | /// that could not be proven as to whether they mismatch with new-expression |
562 | /// used in initializer of the field. |
563 | typedef std::pair<SourceLocation, bool> DeleteExprLoc; |
564 | typedef llvm::SmallVector<DeleteExprLoc, 4> DeleteLocs; |
565 | llvm::MapVector<FieldDecl *, DeleteLocs> DeleteExprs; |
566 | |
567 | typedef llvm::SmallPtrSet<const CXXRecordDecl*, 8> RecordDeclSetTy; |
568 | |
569 | /// PureVirtualClassDiagSet - a set of class declarations which we have |
570 | /// emitted a list of pure virtual functions. Used to prevent emitting the |
571 | /// same list more than once. |
572 | std::unique_ptr<RecordDeclSetTy> PureVirtualClassDiagSet; |
573 | |
574 | /// ParsingInitForAutoVars - a set of declarations with auto types for which |
575 | /// we are currently parsing the initializer. |
576 | llvm::SmallPtrSet<const Decl*, 4> ParsingInitForAutoVars; |
577 | |
578 | /// \brief Look for a locally scoped extern "C" declaration by the given name. |
579 | NamedDecl *findLocallyScopedExternCDecl(DeclarationName Name); |
580 | |
581 | typedef LazyVector<VarDecl *, ExternalSemaSource, |
582 | &ExternalSemaSource::ReadTentativeDefinitions, 2, 2> |
583 | TentativeDefinitionsType; |
584 | |
585 | /// \brief All the tentative definitions encountered in the TU. |
586 | TentativeDefinitionsType TentativeDefinitions; |
587 | |
588 | typedef LazyVector<const DeclaratorDecl *, ExternalSemaSource, |
589 | &ExternalSemaSource::ReadUnusedFileScopedDecls, 2, 2> |
590 | UnusedFileScopedDeclsType; |
591 | |
592 | /// \brief The set of file scoped decls seen so far that have not been used |
593 | /// and must warn if not used. Only contains the first declaration. |
594 | UnusedFileScopedDeclsType UnusedFileScopedDecls; |
595 | |
596 | typedef LazyVector<CXXConstructorDecl *, ExternalSemaSource, |
597 | &ExternalSemaSource::ReadDelegatingConstructors, 2, 2> |
598 | DelegatingCtorDeclsType; |
599 | |
600 | /// \brief All the delegating constructors seen so far in the file, used for |
601 | /// cycle detection at the end of the TU. |
602 | DelegatingCtorDeclsType DelegatingCtorDecls; |
603 | |
604 | /// \brief All the overriding functions seen during a class definition |
605 | /// that had their exception spec checks delayed, plus the overridden |
606 | /// function. |
607 | SmallVector<std::pair<const CXXMethodDecl*, const CXXMethodDecl*>, 2> |
608 | DelayedExceptionSpecChecks; |
609 | |
610 | /// \brief All the members seen during a class definition which were both |
611 | /// explicitly defaulted and had explicitly-specified exception |
612 | /// specifications, along with the function type containing their |
613 | /// user-specified exception specification. Those exception specifications |
614 | /// were overridden with the default specifications, but we still need to |
615 | /// check whether they are compatible with the default specification, and |
616 | /// we can't do that until the nesting set of class definitions is complete. |
617 | SmallVector<std::pair<CXXMethodDecl*, const FunctionProtoType*>, 2> |
618 | DelayedDefaultedMemberExceptionSpecs; |
619 | |
620 | typedef llvm::MapVector<const FunctionDecl *, |
621 | std::unique_ptr<LateParsedTemplate>> |
622 | LateParsedTemplateMapT; |
623 | LateParsedTemplateMapT LateParsedTemplateMap; |
624 | |
625 | /// \brief Callback to the parser to parse templated functions when needed. |
626 | typedef void LateTemplateParserCB(void *P, LateParsedTemplate &LPT); |
627 | typedef void LateTemplateParserCleanupCB(void *P); |
628 | LateTemplateParserCB *LateTemplateParser; |
629 | LateTemplateParserCleanupCB *LateTemplateParserCleanup; |
630 | void *OpaqueParser; |
631 | |
632 | void SetLateTemplateParser(LateTemplateParserCB *LTP, |
633 | LateTemplateParserCleanupCB *LTPCleanup, |
634 | void *P) { |
635 | LateTemplateParser = LTP; |
636 | LateTemplateParserCleanup = LTPCleanup; |
637 | OpaqueParser = P; |
638 | } |
639 | |
640 | class DelayedDiagnostics; |
641 | |
642 | class DelayedDiagnosticsState { |
643 | sema::DelayedDiagnosticPool *SavedPool; |
644 | friend class Sema::DelayedDiagnostics; |
645 | }; |
646 | typedef DelayedDiagnosticsState ParsingDeclState; |
647 | typedef DelayedDiagnosticsState ProcessingContextState; |
648 | |
649 | /// A class which encapsulates the logic for delaying diagnostics |
650 | /// during parsing and other processing. |
651 | class DelayedDiagnostics { |
652 | /// \brief The current pool of diagnostics into which delayed |
653 | /// diagnostics should go. |
654 | sema::DelayedDiagnosticPool *CurPool; |
655 | |
656 | public: |
657 | DelayedDiagnostics() : CurPool(nullptr) {} |
658 | |
659 | /// Adds a delayed diagnostic. |
660 | void add(const sema::DelayedDiagnostic &diag); // in DelayedDiagnostic.h |
661 | |
662 | /// Determines whether diagnostics should be delayed. |
663 | bool shouldDelayDiagnostics() { return CurPool != nullptr; } |
664 | |
665 | /// Returns the current delayed-diagnostics pool. |
666 | sema::DelayedDiagnosticPool *getCurrentPool() const { |
667 | return CurPool; |
668 | } |
669 | |
670 | /// Enter a new scope. Access and deprecation diagnostics will be |
671 | /// collected in this pool. |
672 | DelayedDiagnosticsState push(sema::DelayedDiagnosticPool &pool) { |
673 | DelayedDiagnosticsState state; |
674 | state.SavedPool = CurPool; |
675 | CurPool = &pool; |
676 | return state; |
677 | } |
678 | |
679 | /// Leave a delayed-diagnostic state that was previously pushed. |
680 | /// Do not emit any of the diagnostics. This is performed as part |
681 | /// of the bookkeeping of popping a pool "properly". |
682 | void popWithoutEmitting(DelayedDiagnosticsState state) { |
683 | CurPool = state.SavedPool; |
684 | } |
685 | |
686 | /// Enter a new scope where access and deprecation diagnostics are |
687 | /// not delayed. |
688 | DelayedDiagnosticsState pushUndelayed() { |
689 | DelayedDiagnosticsState state; |
690 | state.SavedPool = CurPool; |
691 | CurPool = nullptr; |
692 | return state; |
693 | } |
694 | |
695 | /// Undo a previous pushUndelayed(). |
696 | void popUndelayed(DelayedDiagnosticsState state) { |
697 | assert(CurPool == nullptr)(static_cast <bool> (CurPool == nullptr) ? void (0) : __assert_fail ("CurPool == nullptr", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 697, __extension__ __PRETTY_FUNCTION__)); |
698 | CurPool = state.SavedPool; |
699 | } |
700 | } DelayedDiagnostics; |
701 | |
702 | /// A RAII object to temporarily push a declaration context. |
703 | class ContextRAII { |
704 | private: |
705 | Sema &S; |
706 | DeclContext *SavedContext; |
707 | ProcessingContextState SavedContextState; |
708 | QualType SavedCXXThisTypeOverride; |
709 | |
710 | public: |
711 | ContextRAII(Sema &S, DeclContext *ContextToPush, bool NewThisContext = true) |
712 | : S(S), SavedContext(S.CurContext), |
713 | SavedContextState(S.DelayedDiagnostics.pushUndelayed()), |
714 | SavedCXXThisTypeOverride(S.CXXThisTypeOverride) |
715 | { |
716 | assert(ContextToPush && "pushing null context")(static_cast <bool> (ContextToPush && "pushing null context" ) ? void (0) : __assert_fail ("ContextToPush && \"pushing null context\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 716, __extension__ __PRETTY_FUNCTION__)); |
717 | S.CurContext = ContextToPush; |
718 | if (NewThisContext) |
719 | S.CXXThisTypeOverride = QualType(); |
720 | } |
721 | |
722 | void pop() { |
723 | if (!SavedContext) return; |
724 | S.CurContext = SavedContext; |
725 | S.DelayedDiagnostics.popUndelayed(SavedContextState); |
726 | S.CXXThisTypeOverride = SavedCXXThisTypeOverride; |
727 | SavedContext = nullptr; |
728 | } |
729 | |
730 | ~ContextRAII() { |
731 | pop(); |
732 | } |
733 | }; |
734 | |
735 | /// \brief RAII object to handle the state changes required to synthesize |
736 | /// a function body. |
737 | class SynthesizedFunctionScope { |
738 | Sema &S; |
739 | Sema::ContextRAII SavedContext; |
740 | bool PushedCodeSynthesisContext = false; |
741 | |
742 | public: |
743 | SynthesizedFunctionScope(Sema &S, DeclContext *DC) |
744 | : S(S), SavedContext(S, DC) { |
745 | S.PushFunctionScope(); |
746 | S.PushExpressionEvaluationContext( |
747 | Sema::ExpressionEvaluationContext::PotentiallyEvaluated); |
748 | if (auto *FD = dyn_cast<FunctionDecl>(DC)) |
749 | FD->setWillHaveBody(true); |
750 | else |
751 | assert(isa<ObjCMethodDecl>(DC))(static_cast <bool> (isa<ObjCMethodDecl>(DC)) ? void (0) : __assert_fail ("isa<ObjCMethodDecl>(DC)", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 751, __extension__ __PRETTY_FUNCTION__)); |
752 | } |
753 | |
754 | void addContextNote(SourceLocation UseLoc) { |
755 | assert(!PushedCodeSynthesisContext)(static_cast <bool> (!PushedCodeSynthesisContext) ? void (0) : __assert_fail ("!PushedCodeSynthesisContext", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 755, __extension__ __PRETTY_FUNCTION__)); |
756 | |
757 | Sema::CodeSynthesisContext Ctx; |
758 | Ctx.Kind = Sema::CodeSynthesisContext::DefiningSynthesizedFunction; |
759 | Ctx.PointOfInstantiation = UseLoc; |
760 | Ctx.Entity = cast<Decl>(S.CurContext); |
761 | S.pushCodeSynthesisContext(Ctx); |
762 | |
763 | PushedCodeSynthesisContext = true; |
764 | } |
765 | |
766 | ~SynthesizedFunctionScope() { |
767 | if (PushedCodeSynthesisContext) |
768 | S.popCodeSynthesisContext(); |
769 | if (auto *FD = dyn_cast<FunctionDecl>(S.CurContext)) |
770 | FD->setWillHaveBody(false); |
771 | S.PopExpressionEvaluationContext(); |
772 | S.PopFunctionScopeInfo(); |
773 | } |
774 | }; |
775 | |
776 | /// WeakUndeclaredIdentifiers - Identifiers contained in |
777 | /// \#pragma weak before declared. rare. may alias another |
778 | /// identifier, declared or undeclared |
779 | llvm::MapVector<IdentifierInfo *, WeakInfo> WeakUndeclaredIdentifiers; |
780 | |
781 | /// ExtnameUndeclaredIdentifiers - Identifiers contained in |
782 | /// \#pragma redefine_extname before declared. Used in Solaris system headers |
783 | /// to define functions that occur in multiple standards to call the version |
784 | /// in the currently selected standard. |
785 | llvm::DenseMap<IdentifierInfo*,AsmLabelAttr*> ExtnameUndeclaredIdentifiers; |
786 | |
787 | |
788 | /// \brief Load weak undeclared identifiers from the external source. |
789 | void LoadExternalWeakUndeclaredIdentifiers(); |
790 | |
791 | /// WeakTopLevelDecl - Translation-unit scoped declarations generated by |
792 | /// \#pragma weak during processing of other Decls. |
793 | /// I couldn't figure out a clean way to generate these in-line, so |
794 | /// we store them here and handle separately -- which is a hack. |
795 | /// It would be best to refactor this. |
796 | SmallVector<Decl*,2> WeakTopLevelDecl; |
797 | |
798 | IdentifierResolver IdResolver; |
799 | |
800 | /// Translation Unit Scope - useful to Objective-C actions that need |
801 | /// to lookup file scope declarations in the "ordinary" C decl namespace. |
802 | /// For example, user-defined classes, built-in "id" type, etc. |
803 | Scope *TUScope; |
804 | |
805 | /// \brief The C++ "std" namespace, where the standard library resides. |
806 | LazyDeclPtr StdNamespace; |
807 | |
808 | /// \brief The C++ "std::bad_alloc" class, which is defined by the C++ |
809 | /// standard library. |
810 | LazyDeclPtr StdBadAlloc; |
811 | |
812 | /// \brief The C++ "std::align_val_t" enum class, which is defined by the C++ |
813 | /// standard library. |
814 | LazyDeclPtr StdAlignValT; |
815 | |
816 | /// \brief The C++ "std::experimental" namespace, where the experimental parts |
817 | /// of the standard library resides. |
818 | NamespaceDecl *StdExperimentalNamespaceCache; |
819 | |
820 | /// \brief The C++ "std::initializer_list" template, which is defined in |
821 | /// \<initializer_list>. |
822 | ClassTemplateDecl *StdInitializerList; |
823 | |
824 | /// \brief The C++ "type_info" declaration, which is defined in \<typeinfo>. |
825 | RecordDecl *CXXTypeInfoDecl; |
826 | |
827 | /// \brief The MSVC "_GUID" struct, which is defined in MSVC header files. |
828 | RecordDecl *MSVCGuidDecl; |
829 | |
830 | /// \brief Caches identifiers/selectors for NSFoundation APIs. |
831 | std::unique_ptr<NSAPI> NSAPIObj; |
832 | |
833 | /// \brief The declaration of the Objective-C NSNumber class. |
834 | ObjCInterfaceDecl *NSNumberDecl; |
835 | |
836 | /// \brief The declaration of the Objective-C NSValue class. |
837 | ObjCInterfaceDecl *NSValueDecl; |
838 | |
839 | /// \brief Pointer to NSNumber type (NSNumber *). |
840 | QualType NSNumberPointer; |
841 | |
842 | /// \brief Pointer to NSValue type (NSValue *). |
843 | QualType NSValuePointer; |
844 | |
845 | /// \brief The Objective-C NSNumber methods used to create NSNumber literals. |
846 | ObjCMethodDecl *NSNumberLiteralMethods[NSAPI::NumNSNumberLiteralMethods]; |
847 | |
848 | /// \brief The declaration of the Objective-C NSString class. |
849 | ObjCInterfaceDecl *NSStringDecl; |
850 | |
851 | /// \brief Pointer to NSString type (NSString *). |
852 | QualType NSStringPointer; |
853 | |
854 | /// \brief The declaration of the stringWithUTF8String: method. |
855 | ObjCMethodDecl *StringWithUTF8StringMethod; |
856 | |
857 | /// \brief The declaration of the valueWithBytes:objCType: method. |
858 | ObjCMethodDecl *ValueWithBytesObjCTypeMethod; |
859 | |
860 | /// \brief The declaration of the Objective-C NSArray class. |
861 | ObjCInterfaceDecl *NSArrayDecl; |
862 | |
863 | /// \brief The declaration of the arrayWithObjects:count: method. |
864 | ObjCMethodDecl *ArrayWithObjectsMethod; |
865 | |
866 | /// \brief The declaration of the Objective-C NSDictionary class. |
867 | ObjCInterfaceDecl *NSDictionaryDecl; |
868 | |
869 | /// \brief The declaration of the dictionaryWithObjects:forKeys:count: method. |
870 | ObjCMethodDecl *DictionaryWithObjectsMethod; |
871 | |
872 | /// \brief id<NSCopying> type. |
873 | QualType QIDNSCopying; |
874 | |
875 | /// \brief will hold 'respondsToSelector:' |
876 | Selector RespondsToSelectorSel; |
877 | |
878 | /// A flag to remember whether the implicit forms of operator new and delete |
879 | /// have been declared. |
880 | bool GlobalNewDeleteDeclared; |
881 | |
882 | /// A flag to indicate that we're in a context that permits abstract |
883 | /// references to fields. This is really a |
884 | bool AllowAbstractFieldReference; |
885 | |
886 | /// \brief Describes how the expressions currently being parsed are |
887 | /// evaluated at run-time, if at all. |
888 | enum class ExpressionEvaluationContext { |
889 | /// \brief The current expression and its subexpressions occur within an |
890 | /// unevaluated operand (C++11 [expr]p7), such as the subexpression of |
891 | /// \c sizeof, where the type of the expression may be significant but |
892 | /// no code will be generated to evaluate the value of the expression at |
893 | /// run time. |
894 | Unevaluated, |
895 | |
896 | /// \brief The current expression occurs within a braced-init-list within |
897 | /// an unevaluated operand. This is mostly like a regular unevaluated |
898 | /// context, except that we still instantiate constexpr functions that are |
899 | /// referenced here so that we can perform narrowing checks correctly. |
900 | UnevaluatedList, |
901 | |
902 | /// \brief The current expression occurs within a discarded statement. |
903 | /// This behaves largely similarly to an unevaluated operand in preventing |
904 | /// definitions from being required, but not in other ways. |
905 | DiscardedStatement, |
906 | |
907 | /// \brief The current expression occurs within an unevaluated |
908 | /// operand that unconditionally permits abstract references to |
909 | /// fields, such as a SIZE operator in MS-style inline assembly. |
910 | UnevaluatedAbstract, |
911 | |
912 | /// \brief The current context is "potentially evaluated" in C++11 terms, |
913 | /// but the expression is evaluated at compile-time (like the values of |
914 | /// cases in a switch statement). |
915 | ConstantEvaluated, |
916 | |
917 | /// \brief The current expression is potentially evaluated at run time, |
918 | /// which means that code may be generated to evaluate the value of the |
919 | /// expression at run time. |
920 | PotentiallyEvaluated, |
921 | |
922 | /// \brief The current expression is potentially evaluated, but any |
923 | /// declarations referenced inside that expression are only used if |
924 | /// in fact the current expression is used. |
925 | /// |
926 | /// This value is used when parsing default function arguments, for which |
927 | /// we would like to provide diagnostics (e.g., passing non-POD arguments |
928 | /// through varargs) but do not want to mark declarations as "referenced" |
929 | /// until the default argument is used. |
930 | PotentiallyEvaluatedIfUsed |
931 | }; |
932 | |
933 | /// \brief Data structure used to record current or nested |
934 | /// expression evaluation contexts. |
935 | struct ExpressionEvaluationContextRecord { |
936 | /// \brief The expression evaluation context. |
937 | ExpressionEvaluationContext Context; |
938 | |
939 | /// \brief Whether the enclosing context needed a cleanup. |
940 | CleanupInfo ParentCleanup; |
941 | |
942 | /// \brief Whether we are in a decltype expression. |
943 | bool IsDecltype; |
944 | |
945 | /// \brief The number of active cleanup objects when we entered |
946 | /// this expression evaluation context. |
947 | unsigned NumCleanupObjects; |
948 | |
949 | /// \brief The number of typos encountered during this expression evaluation |
950 | /// context (i.e. the number of TypoExprs created). |
951 | unsigned NumTypos; |
952 | |
953 | llvm::SmallPtrSet<Expr*, 2> SavedMaybeODRUseExprs; |
954 | |
955 | /// \brief The lambdas that are present within this context, if it |
956 | /// is indeed an unevaluated context. |
957 | SmallVector<LambdaExpr *, 2> Lambdas; |
958 | |
959 | /// \brief The declaration that provides context for lambda expressions |
960 | /// and block literals if the normal declaration context does not |
961 | /// suffice, e.g., in a default function argument. |
962 | Decl *ManglingContextDecl; |
963 | |
964 | /// \brief The context information used to mangle lambda expressions |
965 | /// and block literals within this context. |
966 | /// |
967 | /// This mangling information is allocated lazily, since most contexts |
968 | /// do not have lambda expressions or block literals. |
969 | std::unique_ptr<MangleNumberingContext> MangleNumbering; |
970 | |
971 | /// \brief If we are processing a decltype type, a set of call expressions |
972 | /// for which we have deferred checking the completeness of the return type. |
973 | SmallVector<CallExpr *, 8> DelayedDecltypeCalls; |
974 | |
975 | /// \brief If we are processing a decltype type, a set of temporary binding |
976 | /// expressions for which we have deferred checking the destructor. |
977 | SmallVector<CXXBindTemporaryExpr *, 8> DelayedDecltypeBinds; |
978 | |
979 | ExpressionEvaluationContextRecord(ExpressionEvaluationContext Context, |
980 | unsigned NumCleanupObjects, |
981 | CleanupInfo ParentCleanup, |
982 | Decl *ManglingContextDecl, |
983 | bool IsDecltype) |
984 | : Context(Context), ParentCleanup(ParentCleanup), |
985 | IsDecltype(IsDecltype), NumCleanupObjects(NumCleanupObjects), |
986 | NumTypos(0), |
987 | ManglingContextDecl(ManglingContextDecl), MangleNumbering() { } |
988 | |
989 | /// \brief Retrieve the mangling numbering context, used to consistently |
990 | /// number constructs like lambdas for mangling. |
991 | MangleNumberingContext &getMangleNumberingContext(ASTContext &Ctx); |
992 | |
993 | bool isUnevaluated() const { |
994 | return Context == ExpressionEvaluationContext::Unevaluated || |
995 | Context == ExpressionEvaluationContext::UnevaluatedAbstract || |
996 | Context == ExpressionEvaluationContext::UnevaluatedList; |
997 | } |
998 | bool isConstantEvaluated() const { |
999 | return Context == ExpressionEvaluationContext::ConstantEvaluated; |
1000 | } |
1001 | }; |
1002 | |
1003 | /// A stack of expression evaluation contexts. |
1004 | SmallVector<ExpressionEvaluationContextRecord, 8> ExprEvalContexts; |
1005 | |
1006 | /// \brief Compute the mangling number context for a lambda expression or |
1007 | /// block literal. |
1008 | /// |
1009 | /// \param DC - The DeclContext containing the lambda expression or |
1010 | /// block literal. |
1011 | /// \param[out] ManglingContextDecl - Returns the ManglingContextDecl |
1012 | /// associated with the context, if relevant. |
1013 | MangleNumberingContext *getCurrentMangleNumberContext( |
1014 | const DeclContext *DC, |
1015 | Decl *&ManglingContextDecl); |
1016 | |
1017 | |
1018 | /// SpecialMemberOverloadResult - The overloading result for a special member |
1019 | /// function. |
1020 | /// |
1021 | /// This is basically a wrapper around PointerIntPair. The lowest bits of the |
1022 | /// integer are used to determine whether overload resolution succeeded. |
1023 | class SpecialMemberOverloadResult { |
1024 | public: |
1025 | enum Kind { |
1026 | NoMemberOrDeleted, |
1027 | Ambiguous, |
1028 | Success |
1029 | }; |
1030 | |
1031 | private: |
1032 | llvm::PointerIntPair<CXXMethodDecl*, 2> Pair; |
1033 | |
1034 | public: |
1035 | SpecialMemberOverloadResult() : Pair() {} |
1036 | SpecialMemberOverloadResult(CXXMethodDecl *MD) |
1037 | : Pair(MD, MD->isDeleted() ? NoMemberOrDeleted : Success) {} |
1038 | |
1039 | CXXMethodDecl *getMethod() const { return Pair.getPointer(); } |
1040 | void setMethod(CXXMethodDecl *MD) { Pair.setPointer(MD); } |
1041 | |
1042 | Kind getKind() const { return static_cast<Kind>(Pair.getInt()); } |
1043 | void setKind(Kind K) { Pair.setInt(K); } |
1044 | }; |
1045 | |
1046 | class SpecialMemberOverloadResultEntry |
1047 | : public llvm::FastFoldingSetNode, |
1048 | public SpecialMemberOverloadResult { |
1049 | public: |
1050 | SpecialMemberOverloadResultEntry(const llvm::FoldingSetNodeID &ID) |
1051 | : FastFoldingSetNode(ID) |
1052 | {} |
1053 | }; |
1054 | |
1055 | /// \brief A cache of special member function overload resolution results |
1056 | /// for C++ records. |
1057 | llvm::FoldingSet<SpecialMemberOverloadResultEntry> SpecialMemberCache; |
1058 | |
1059 | /// \brief A cache of the flags available in enumerations with the flag_bits |
1060 | /// attribute. |
1061 | mutable llvm::DenseMap<const EnumDecl*, llvm::APInt> FlagBitsCache; |
1062 | |
1063 | /// \brief The kind of translation unit we are processing. |
1064 | /// |
1065 | /// When we're processing a complete translation unit, Sema will perform |
1066 | /// end-of-translation-unit semantic tasks (such as creating |
1067 | /// initializers for tentative definitions in C) once parsing has |
1068 | /// completed. Modules and precompiled headers perform different kinds of |
1069 | /// checks. |
1070 | TranslationUnitKind TUKind; |
1071 | |
1072 | llvm::BumpPtrAllocator BumpAlloc; |
1073 | |
1074 | /// \brief The number of SFINAE diagnostics that have been trapped. |
1075 | unsigned NumSFINAEErrors; |
1076 | |
1077 | typedef llvm::DenseMap<ParmVarDecl *, llvm::TinyPtrVector<ParmVarDecl *>> |
1078 | UnparsedDefaultArgInstantiationsMap; |
1079 | |
1080 | /// \brief A mapping from parameters with unparsed default arguments to the |
1081 | /// set of instantiations of each parameter. |
1082 | /// |
1083 | /// This mapping is a temporary data structure used when parsing |
1084 | /// nested class templates or nested classes of class templates, |
1085 | /// where we might end up instantiating an inner class before the |
1086 | /// default arguments of its methods have been parsed. |
1087 | UnparsedDefaultArgInstantiationsMap UnparsedDefaultArgInstantiations; |
1088 | |
1089 | // Contains the locations of the beginning of unparsed default |
1090 | // argument locations. |
1091 | llvm::DenseMap<ParmVarDecl *, SourceLocation> UnparsedDefaultArgLocs; |
1092 | |
1093 | /// UndefinedInternals - all the used, undefined objects which require a |
1094 | /// definition in this translation unit. |
1095 | llvm::MapVector<NamedDecl *, SourceLocation> UndefinedButUsed; |
1096 | |
1097 | /// Determine if VD, which must be a variable or function, is an external |
1098 | /// symbol that nonetheless can't be referenced from outside this translation |
1099 | /// unit because its type has no linkage and it's not extern "C". |
1100 | bool isExternalWithNoLinkageType(ValueDecl *VD); |
1101 | |
1102 | /// Obtain a sorted list of functions that are undefined but ODR-used. |
1103 | void getUndefinedButUsed( |
1104 | SmallVectorImpl<std::pair<NamedDecl *, SourceLocation> > &Undefined); |
1105 | |
1106 | /// Retrieves list of suspicious delete-expressions that will be checked at |
1107 | /// the end of translation unit. |
1108 | const llvm::MapVector<FieldDecl *, DeleteLocs> & |
1109 | getMismatchingDeleteExpressions() const; |
1110 | |
1111 | typedef std::pair<ObjCMethodList, ObjCMethodList> GlobalMethods; |
1112 | typedef llvm::DenseMap<Selector, GlobalMethods> GlobalMethodPool; |
1113 | |
1114 | /// Method Pool - allows efficient lookup when typechecking messages to "id". |
1115 | /// We need to maintain a list, since selectors can have differing signatures |
1116 | /// across classes. In Cocoa, this happens to be extremely uncommon (only 1% |
1117 | /// of selectors are "overloaded"). |
1118 | /// At the head of the list it is recorded whether there were 0, 1, or >= 2 |
1119 | /// methods inside categories with a particular selector. |
1120 | GlobalMethodPool MethodPool; |
1121 | |
1122 | /// Method selectors used in a \@selector expression. Used for implementation |
1123 | /// of -Wselector. |
1124 | llvm::MapVector<Selector, SourceLocation> ReferencedSelectors; |
1125 | |
1126 | /// Kinds of C++ special members. |
1127 | enum CXXSpecialMember { |
1128 | CXXDefaultConstructor, |
1129 | CXXCopyConstructor, |
1130 | CXXMoveConstructor, |
1131 | CXXCopyAssignment, |
1132 | CXXMoveAssignment, |
1133 | CXXDestructor, |
1134 | CXXInvalid |
1135 | }; |
1136 | |
1137 | typedef llvm::PointerIntPair<CXXRecordDecl *, 3, CXXSpecialMember> |
1138 | SpecialMemberDecl; |
1139 | |
1140 | /// The C++ special members which we are currently in the process of |
1141 | /// declaring. If this process recursively triggers the declaration of the |
1142 | /// same special member, we should act as if it is not yet declared. |
1143 | llvm::SmallPtrSet<SpecialMemberDecl, 4> SpecialMembersBeingDeclared; |
1144 | |
1145 | /// The function definitions which were renamed as part of typo-correction |
1146 | /// to match their respective declarations. We want to keep track of them |
1147 | /// to ensure that we don't emit a "redefinition" error if we encounter a |
1148 | /// correctly named definition after the renamed definition. |
1149 | llvm::SmallPtrSet<const NamedDecl *, 4> TypoCorrectedFunctionDefinitions; |
1150 | |
1151 | /// Stack of types that correspond to the parameter entities that are |
1152 | /// currently being copy-initialized. Can be empty. |
1153 | llvm::SmallVector<QualType, 4> CurrentParameterCopyTypes; |
1154 | |
1155 | void ReadMethodPool(Selector Sel); |
1156 | void updateOutOfDateSelector(Selector Sel); |
1157 | |
1158 | /// Private Helper predicate to check for 'self'. |
1159 | bool isSelfExpr(Expr *RExpr); |
1160 | bool isSelfExpr(Expr *RExpr, const ObjCMethodDecl *Method); |
1161 | |
1162 | /// \brief Cause the active diagnostic on the DiagosticsEngine to be |
1163 | /// emitted. This is closely coupled to the SemaDiagnosticBuilder class and |
1164 | /// should not be used elsewhere. |
1165 | void EmitCurrentDiagnostic(unsigned DiagID); |
1166 | |
1167 | /// Records and restores the FP_CONTRACT state on entry/exit of compound |
1168 | /// statements. |
1169 | class FPContractStateRAII { |
1170 | public: |
1171 | FPContractStateRAII(Sema &S) : S(S), OldFPFeaturesState(S.FPFeatures) {} |
1172 | ~FPContractStateRAII() { S.FPFeatures = OldFPFeaturesState; } |
1173 | |
1174 | private: |
1175 | Sema& S; |
1176 | FPOptions OldFPFeaturesState; |
1177 | }; |
1178 | |
1179 | void addImplicitTypedef(StringRef Name, QualType T); |
1180 | |
1181 | public: |
1182 | Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer, |
1183 | TranslationUnitKind TUKind = TU_Complete, |
1184 | CodeCompleteConsumer *CompletionConsumer = nullptr); |
1185 | ~Sema(); |
1186 | |
1187 | /// \brief Perform initialization that occurs after the parser has been |
1188 | /// initialized but before it parses anything. |
1189 | void Initialize(); |
1190 | |
1191 | const LangOptions &getLangOpts() const { return LangOpts; } |
1192 | OpenCLOptions &getOpenCLOptions() { return OpenCLFeatures; } |
1193 | FPOptions &getFPOptions() { return FPFeatures; } |
1194 | |
1195 | DiagnosticsEngine &getDiagnostics() const { return Diags; } |
1196 | SourceManager &getSourceManager() const { return SourceMgr; } |
1197 | Preprocessor &getPreprocessor() const { return PP; } |
1198 | ASTContext &getASTContext() const { return Context; } |
1199 | ASTConsumer &getASTConsumer() const { return Consumer; } |
1200 | ASTMutationListener *getASTMutationListener() const; |
1201 | ExternalSemaSource* getExternalSource() const { return ExternalSource; } |
1202 | |
1203 | ///\brief Registers an external source. If an external source already exists, |
1204 | /// creates a multiplex external source and appends to it. |
1205 | /// |
1206 | ///\param[in] E - A non-null external sema source. |
1207 | /// |
1208 | void addExternalSource(ExternalSemaSource *E); |
1209 | |
1210 | void PrintStats() const; |
1211 | |
1212 | /// \brief Helper class that creates diagnostics with optional |
1213 | /// template instantiation stacks. |
1214 | /// |
1215 | /// This class provides a wrapper around the basic DiagnosticBuilder |
1216 | /// class that emits diagnostics. SemaDiagnosticBuilder is |
1217 | /// responsible for emitting the diagnostic (as DiagnosticBuilder |
1218 | /// does) and, if the diagnostic comes from inside a template |
1219 | /// instantiation, printing the template instantiation stack as |
1220 | /// well. |
1221 | class SemaDiagnosticBuilder : public DiagnosticBuilder { |
1222 | Sema &SemaRef; |
1223 | unsigned DiagID; |
1224 | |
1225 | public: |
1226 | SemaDiagnosticBuilder(DiagnosticBuilder &DB, Sema &SemaRef, unsigned DiagID) |
1227 | : DiagnosticBuilder(DB), SemaRef(SemaRef), DiagID(DiagID) { } |
1228 | |
1229 | // This is a cunning lie. DiagnosticBuilder actually performs move |
1230 | // construction in its copy constructor (but due to varied uses, it's not |
1231 | // possible to conveniently express this as actual move construction). So |
1232 | // the default copy ctor here is fine, because the base class disables the |
1233 | // source anyway, so the user-defined ~SemaDiagnosticBuilder is a safe no-op |
1234 | // in that case anwyay. |
1235 | SemaDiagnosticBuilder(const SemaDiagnosticBuilder&) = default; |
1236 | |
1237 | ~SemaDiagnosticBuilder() { |
1238 | // If we aren't active, there is nothing to do. |
1239 | if (!isActive()) return; |
1240 | |
1241 | // Otherwise, we need to emit the diagnostic. First flush the underlying |
1242 | // DiagnosticBuilder data, and clear the diagnostic builder itself so it |
1243 | // won't emit the diagnostic in its own destructor. |
1244 | // |
1245 | // This seems wasteful, in that as written the DiagnosticBuilder dtor will |
1246 | // do its own needless checks to see if the diagnostic needs to be |
1247 | // emitted. However, because we take care to ensure that the builder |
1248 | // objects never escape, a sufficiently smart compiler will be able to |
1249 | // eliminate that code. |
1250 | FlushCounts(); |
1251 | Clear(); |
1252 | |
1253 | // Dispatch to Sema to emit the diagnostic. |
1254 | SemaRef.EmitCurrentDiagnostic(DiagID); |
1255 | } |
1256 | |
1257 | /// Teach operator<< to produce an object of the correct type. |
1258 | template<typename T> |
1259 | friend const SemaDiagnosticBuilder &operator<<( |
1260 | const SemaDiagnosticBuilder &Diag, const T &Value) { |
1261 | const DiagnosticBuilder &BaseDiag = Diag; |
1262 | BaseDiag << Value; |
1263 | return Diag; |
1264 | } |
1265 | }; |
1266 | |
1267 | /// \brief Emit a diagnostic. |
1268 | SemaDiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID) { |
1269 | DiagnosticBuilder DB = Diags.Report(Loc, DiagID); |
1270 | return SemaDiagnosticBuilder(DB, *this, DiagID); |
1271 | } |
1272 | |
1273 | /// \brief Emit a partial diagnostic. |
1274 | SemaDiagnosticBuilder Diag(SourceLocation Loc, const PartialDiagnostic& PD); |
1275 | |
1276 | /// \brief Build a partial diagnostic. |
1277 | PartialDiagnostic PDiag(unsigned DiagID = 0); // in SemaInternal.h |
1278 | |
1279 | bool findMacroSpelling(SourceLocation &loc, StringRef name); |
1280 | |
1281 | /// \brief Get a string to suggest for zero-initialization of a type. |
1282 | std::string |
1283 | getFixItZeroInitializerForType(QualType T, SourceLocation Loc) const; |
1284 | std::string getFixItZeroLiteralForType(QualType T, SourceLocation Loc) const; |
1285 | |
1286 | /// \brief Calls \c Lexer::getLocForEndOfToken() |
1287 | SourceLocation getLocForEndOfToken(SourceLocation Loc, unsigned Offset = 0); |
1288 | |
1289 | /// \brief Retrieve the module loader associated with the preprocessor. |
1290 | ModuleLoader &getModuleLoader() const; |
1291 | |
1292 | void emitAndClearUnusedLocalTypedefWarnings(); |
1293 | |
1294 | void ActOnStartOfTranslationUnit(); |
1295 | void ActOnEndOfTranslationUnit(); |
1296 | |
1297 | void CheckDelegatingCtorCycles(); |
1298 | |
1299 | Scope *getScopeForContext(DeclContext *Ctx); |
1300 | |
1301 | void PushFunctionScope(); |
1302 | void PushBlockScope(Scope *BlockScope, BlockDecl *Block); |
1303 | sema::LambdaScopeInfo *PushLambdaScope(); |
1304 | |
1305 | /// \brief This is used to inform Sema what the current TemplateParameterDepth |
1306 | /// is during Parsing. Currently it is used to pass on the depth |
1307 | /// when parsing generic lambda 'auto' parameters. |
1308 | void RecordParsingTemplateParameterDepth(unsigned Depth); |
1309 | |
1310 | void PushCapturedRegionScope(Scope *RegionScope, CapturedDecl *CD, |
1311 | RecordDecl *RD, |
1312 | CapturedRegionKind K); |
1313 | void |
1314 | PopFunctionScopeInfo(const sema::AnalysisBasedWarnings::Policy *WP = nullptr, |
1315 | const Decl *D = nullptr, |
1316 | const BlockExpr *blkExpr = nullptr); |
1317 | |
1318 | sema::FunctionScopeInfo *getCurFunction() const { |
1319 | return FunctionScopes.empty() ? nullptr : FunctionScopes.back(); |
1320 | } |
1321 | |
1322 | sema::FunctionScopeInfo *getEnclosingFunction() const; |
1323 | |
1324 | void setFunctionHasBranchIntoScope(); |
1325 | void setFunctionHasBranchProtectedScope(); |
1326 | void setFunctionHasIndirectGoto(); |
1327 | |
1328 | void PushCompoundScope(bool IsStmtExpr); |
1329 | void PopCompoundScope(); |
1330 | |
1331 | sema::CompoundScopeInfo &getCurCompoundScope() const; |
1332 | |
1333 | bool hasAnyUnrecoverableErrorsInThisFunction() const; |
1334 | |
1335 | /// \brief Retrieve the current block, if any. |
1336 | sema::BlockScopeInfo *getCurBlock(); |
1337 | |
1338 | /// Retrieve the current lambda scope info, if any. |
1339 | /// \param IgnoreNonLambdaCapturingScope true if should find the top-most |
1340 | /// lambda scope info ignoring all inner capturing scopes that are not |
1341 | /// lambda scopes. |
1342 | sema::LambdaScopeInfo * |
1343 | getCurLambda(bool IgnoreNonLambdaCapturingScope = false); |
1344 | |
1345 | /// \brief Retrieve the current generic lambda info, if any. |
1346 | sema::LambdaScopeInfo *getCurGenericLambda(); |
1347 | |
1348 | /// \brief Retrieve the current captured region, if any. |
1349 | sema::CapturedRegionScopeInfo *getCurCapturedRegion(); |
1350 | |
1351 | /// WeakTopLevelDeclDecls - access to \#pragma weak-generated Decls |
1352 | SmallVectorImpl<Decl *> &WeakTopLevelDecls() { return WeakTopLevelDecl; } |
1353 | |
1354 | void ActOnComment(SourceRange Comment); |
1355 | |
1356 | //===--------------------------------------------------------------------===// |
1357 | // Type Analysis / Processing: SemaType.cpp. |
1358 | // |
1359 | |
1360 | QualType BuildQualifiedType(QualType T, SourceLocation Loc, Qualifiers Qs, |
1361 | const DeclSpec *DS = nullptr); |
1362 | QualType BuildQualifiedType(QualType T, SourceLocation Loc, unsigned CVRA, |
1363 | const DeclSpec *DS = nullptr); |
1364 | QualType BuildPointerType(QualType T, |
1365 | SourceLocation Loc, DeclarationName Entity); |
1366 | QualType BuildReferenceType(QualType T, bool LValueRef, |
1367 | SourceLocation Loc, DeclarationName Entity); |
1368 | QualType BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, |
1369 | Expr *ArraySize, unsigned Quals, |
1370 | SourceRange Brackets, DeclarationName Entity); |
1371 | QualType BuildExtVectorType(QualType T, Expr *ArraySize, |
1372 | SourceLocation AttrLoc); |
1373 | QualType BuildAddressSpaceAttr(QualType &T, Expr *AddrSpace, |
1374 | SourceLocation AttrLoc); |
1375 | |
1376 | bool CheckFunctionReturnType(QualType T, SourceLocation Loc); |
1377 | |
1378 | /// \brief Build a function type. |
1379 | /// |
1380 | /// This routine checks the function type according to C++ rules and |
1381 | /// under the assumption that the result type and parameter types have |
1382 | /// just been instantiated from a template. It therefore duplicates |
1383 | /// some of the behavior of GetTypeForDeclarator, but in a much |
1384 | /// simpler form that is only suitable for this narrow use case. |
1385 | /// |
1386 | /// \param T The return type of the function. |
1387 | /// |
1388 | /// \param ParamTypes The parameter types of the function. This array |
1389 | /// will be modified to account for adjustments to the types of the |
1390 | /// function parameters. |
1391 | /// |
1392 | /// \param Loc The location of the entity whose type involves this |
1393 | /// function type or, if there is no such entity, the location of the |
1394 | /// type that will have function type. |
1395 | /// |
1396 | /// \param Entity The name of the entity that involves the function |
1397 | /// type, if known. |
1398 | /// |
1399 | /// \param EPI Extra information about the function type. Usually this will |
1400 | /// be taken from an existing function with the same prototype. |
1401 | /// |
1402 | /// \returns A suitable function type, if there are no errors. The |
1403 | /// unqualified type will always be a FunctionProtoType. |
1404 | /// Otherwise, returns a NULL type. |
1405 | QualType BuildFunctionType(QualType T, |
1406 | MutableArrayRef<QualType> ParamTypes, |
1407 | SourceLocation Loc, DeclarationName Entity, |
1408 | const FunctionProtoType::ExtProtoInfo &EPI); |
1409 | |
1410 | QualType BuildMemberPointerType(QualType T, QualType Class, |
1411 | SourceLocation Loc, |
1412 | DeclarationName Entity); |
1413 | QualType BuildBlockPointerType(QualType T, |
1414 | SourceLocation Loc, DeclarationName Entity); |
1415 | QualType BuildParenType(QualType T); |
1416 | QualType BuildAtomicType(QualType T, SourceLocation Loc); |
1417 | QualType BuildReadPipeType(QualType T, |
1418 | SourceLocation Loc); |
1419 | QualType BuildWritePipeType(QualType T, |
1420 | SourceLocation Loc); |
1421 | |
1422 | TypeSourceInfo *GetTypeForDeclarator(Declarator &D, Scope *S); |
1423 | TypeSourceInfo *GetTypeForDeclaratorCast(Declarator &D, QualType FromTy); |
1424 | TypeSourceInfo *GetTypeSourceInfoForDeclarator(Declarator &D, QualType T, |
1425 | TypeSourceInfo *ReturnTypeInfo); |
1426 | |
1427 | /// \brief Package the given type and TSI into a ParsedType. |
1428 | ParsedType CreateParsedType(QualType T, TypeSourceInfo *TInfo); |
1429 | DeclarationNameInfo GetNameForDeclarator(Declarator &D); |
1430 | DeclarationNameInfo GetNameFromUnqualifiedId(const UnqualifiedId &Name); |
1431 | static QualType GetTypeFromParser(ParsedType Ty, |
1432 | TypeSourceInfo **TInfo = nullptr); |
1433 | CanThrowResult canThrow(const Expr *E); |
1434 | const FunctionProtoType *ResolveExceptionSpec(SourceLocation Loc, |
1435 | const FunctionProtoType *FPT); |
1436 | void UpdateExceptionSpec(FunctionDecl *FD, |
1437 | const FunctionProtoType::ExceptionSpecInfo &ESI); |
1438 | bool CheckSpecifiedExceptionType(QualType &T, SourceRange Range); |
1439 | bool CheckDistantExceptionSpec(QualType T); |
1440 | bool CheckEquivalentExceptionSpec(FunctionDecl *Old, FunctionDecl *New); |
1441 | bool CheckEquivalentExceptionSpec( |
1442 | const FunctionProtoType *Old, SourceLocation OldLoc, |
1443 | const FunctionProtoType *New, SourceLocation NewLoc); |
1444 | bool CheckEquivalentExceptionSpec( |
1445 | const PartialDiagnostic &DiagID, const PartialDiagnostic & NoteID, |
1446 | const FunctionProtoType *Old, SourceLocation OldLoc, |
1447 | const FunctionProtoType *New, SourceLocation NewLoc); |
1448 | bool handlerCanCatch(QualType HandlerType, QualType ExceptionType); |
1449 | bool CheckExceptionSpecSubset(const PartialDiagnostic &DiagID, |
1450 | const PartialDiagnostic &NestedDiagID, |
1451 | const PartialDiagnostic &NoteID, |
1452 | const FunctionProtoType *Superset, |
1453 | SourceLocation SuperLoc, |
1454 | const FunctionProtoType *Subset, |
1455 | SourceLocation SubLoc); |
1456 | bool CheckParamExceptionSpec(const PartialDiagnostic &NestedDiagID, |
1457 | const PartialDiagnostic &NoteID, |
1458 | const FunctionProtoType *Target, |
1459 | SourceLocation TargetLoc, |
1460 | const FunctionProtoType *Source, |
1461 | SourceLocation SourceLoc); |
1462 | |
1463 | TypeResult ActOnTypeName(Scope *S, Declarator &D); |
1464 | |
1465 | /// \brief The parser has parsed the context-sensitive type 'instancetype' |
1466 | /// in an Objective-C message declaration. Return the appropriate type. |
1467 | ParsedType ActOnObjCInstanceType(SourceLocation Loc); |
1468 | |
1469 | /// \brief Abstract class used to diagnose incomplete types. |
1470 | struct TypeDiagnoser { |
1471 | TypeDiagnoser() {} |
1472 | |
1473 | virtual void diagnose(Sema &S, SourceLocation Loc, QualType T) = 0; |
1474 | virtual ~TypeDiagnoser() {} |
1475 | }; |
1476 | |
1477 | static int getPrintable(int I) { return I; } |
1478 | static unsigned getPrintable(unsigned I) { return I; } |
1479 | static bool getPrintable(bool B) { return B; } |
1480 | static const char * getPrintable(const char *S) { return S; } |
1481 | static StringRef getPrintable(StringRef S) { return S; } |
1482 | static const std::string &getPrintable(const std::string &S) { return S; } |
1483 | static const IdentifierInfo *getPrintable(const IdentifierInfo *II) { |
1484 | return II; |
1485 | } |
1486 | static DeclarationName getPrintable(DeclarationName N) { return N; } |
1487 | static QualType getPrintable(QualType T) { return T; } |
1488 | static SourceRange getPrintable(SourceRange R) { return R; } |
1489 | static SourceRange getPrintable(SourceLocation L) { return L; } |
1490 | static SourceRange getPrintable(const Expr *E) { return E->getSourceRange(); } |
1491 | static SourceRange getPrintable(TypeLoc TL) { return TL.getSourceRange();} |
1492 | |
1493 | template <typename... Ts> class BoundTypeDiagnoser : public TypeDiagnoser { |
1494 | unsigned DiagID; |
1495 | std::tuple<const Ts &...> Args; |
1496 | |
1497 | template <std::size_t... Is> |
1498 | void emit(const SemaDiagnosticBuilder &DB, |
1499 | llvm::index_sequence<Is...>) const { |
1500 | // Apply all tuple elements to the builder in order. |
1501 | bool Dummy[] = {false, (DB << getPrintable(std::get<Is>(Args)))...}; |
1502 | (void)Dummy; |
1503 | } |
1504 | |
1505 | public: |
1506 | BoundTypeDiagnoser(unsigned DiagID, const Ts &...Args) |
1507 | : TypeDiagnoser(), DiagID(DiagID), Args(Args...) { |
1508 | assert(DiagID != 0 && "no diagnostic for type diagnoser")(static_cast <bool> (DiagID != 0 && "no diagnostic for type diagnoser" ) ? void (0) : __assert_fail ("DiagID != 0 && \"no diagnostic for type diagnoser\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 1508, __extension__ __PRETTY_FUNCTION__)); |
1509 | } |
1510 | |
1511 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { |
1512 | const SemaDiagnosticBuilder &DB = S.Diag(Loc, DiagID); |
1513 | emit(DB, llvm::index_sequence_for<Ts...>()); |
1514 | DB << T; |
1515 | } |
1516 | }; |
1517 | |
1518 | private: |
1519 | bool RequireCompleteTypeImpl(SourceLocation Loc, QualType T, |
1520 | TypeDiagnoser *Diagnoser); |
1521 | |
1522 | struct ModuleScope { |
1523 | clang::Module *Module = nullptr; |
1524 | bool ModuleInterface = false; |
1525 | VisibleModuleSet OuterVisibleModules; |
1526 | }; |
1527 | /// The modules we're currently parsing. |
1528 | llvm::SmallVector<ModuleScope, 16> ModuleScopes; |
1529 | |
1530 | /// Get the module whose scope we are currently within. |
1531 | Module *getCurrentModule() const { |
1532 | return ModuleScopes.empty() ? nullptr : ModuleScopes.back().Module; |
1533 | } |
1534 | |
1535 | VisibleModuleSet VisibleModules; |
1536 | |
1537 | public: |
1538 | /// \brief Get the module owning an entity. |
1539 | Module *getOwningModule(Decl *Entity) { return Entity->getOwningModule(); } |
1540 | |
1541 | /// \brief Make a merged definition of an existing hidden definition \p ND |
1542 | /// visible at the specified location. |
1543 | void makeMergedDefinitionVisible(NamedDecl *ND); |
1544 | |
1545 | bool isModuleVisible(const Module *M) { return VisibleModules.isVisible(M); } |
1546 | |
1547 | /// Determine whether a declaration is visible to name lookup. |
1548 | bool isVisible(const NamedDecl *D) { |
1549 | return !D->isHidden() || isVisibleSlow(D); |
1550 | } |
1551 | |
1552 | /// Determine whether any declaration of an entity is visible. |
1553 | bool |
1554 | hasVisibleDeclaration(const NamedDecl *D, |
1555 | llvm::SmallVectorImpl<Module *> *Modules = nullptr) { |
1556 | return isVisible(D) || hasVisibleDeclarationSlow(D, Modules); |
1557 | } |
1558 | bool hasVisibleDeclarationSlow(const NamedDecl *D, |
1559 | llvm::SmallVectorImpl<Module *> *Modules); |
1560 | |
1561 | bool hasVisibleMergedDefinition(NamedDecl *Def); |
1562 | bool hasMergedDefinitionInCurrentModule(NamedDecl *Def); |
1563 | |
1564 | /// Determine if \p D and \p Suggested have a structurally compatible |
1565 | /// layout as described in C11 6.2.7/1. |
1566 | bool hasStructuralCompatLayout(Decl *D, Decl *Suggested); |
1567 | |
1568 | /// Determine if \p D has a visible definition. If not, suggest a declaration |
1569 | /// that should be made visible to expose the definition. |
1570 | bool hasVisibleDefinition(NamedDecl *D, NamedDecl **Suggested, |
1571 | bool OnlyNeedComplete = false); |
1572 | bool hasVisibleDefinition(const NamedDecl *D) { |
1573 | NamedDecl *Hidden; |
1574 | return hasVisibleDefinition(const_cast<NamedDecl*>(D), &Hidden); |
1575 | } |
1576 | |
1577 | /// Determine if the template parameter \p D has a visible default argument. |
1578 | bool |
1579 | hasVisibleDefaultArgument(const NamedDecl *D, |
1580 | llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1581 | |
1582 | /// Determine if there is a visible declaration of \p D that is an explicit |
1583 | /// specialization declaration for a specialization of a template. (For a |
1584 | /// member specialization, use hasVisibleMemberSpecialization.) |
1585 | bool hasVisibleExplicitSpecialization( |
1586 | const NamedDecl *D, llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1587 | |
1588 | /// Determine if there is a visible declaration of \p D that is a member |
1589 | /// specialization declaration (as opposed to an instantiated declaration). |
1590 | bool hasVisibleMemberSpecialization( |
1591 | const NamedDecl *D, llvm::SmallVectorImpl<Module *> *Modules = nullptr); |
1592 | |
1593 | /// Determine if \p A and \p B are equivalent internal linkage declarations |
1594 | /// from different modules, and thus an ambiguity error can be downgraded to |
1595 | /// an extension warning. |
1596 | bool isEquivalentInternalLinkageDeclaration(const NamedDecl *A, |
1597 | const NamedDecl *B); |
1598 | void diagnoseEquivalentInternalLinkageDeclarations( |
1599 | SourceLocation Loc, const NamedDecl *D, |
1600 | ArrayRef<const NamedDecl *> Equiv); |
1601 | |
1602 | bool isCompleteType(SourceLocation Loc, QualType T) { |
1603 | return !RequireCompleteTypeImpl(Loc, T, nullptr); |
1604 | } |
1605 | bool RequireCompleteType(SourceLocation Loc, QualType T, |
1606 | TypeDiagnoser &Diagnoser); |
1607 | bool RequireCompleteType(SourceLocation Loc, QualType T, |
1608 | unsigned DiagID); |
1609 | |
1610 | template <typename... Ts> |
1611 | bool RequireCompleteType(SourceLocation Loc, QualType T, unsigned DiagID, |
1612 | const Ts &...Args) { |
1613 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1614 | return RequireCompleteType(Loc, T, Diagnoser); |
1615 | } |
1616 | |
1617 | void completeExprArrayBound(Expr *E); |
1618 | bool RequireCompleteExprType(Expr *E, TypeDiagnoser &Diagnoser); |
1619 | bool RequireCompleteExprType(Expr *E, unsigned DiagID); |
1620 | |
1621 | template <typename... Ts> |
1622 | bool RequireCompleteExprType(Expr *E, unsigned DiagID, const Ts &...Args) { |
1623 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1624 | return RequireCompleteExprType(E, Diagnoser); |
1625 | } |
1626 | |
1627 | bool RequireLiteralType(SourceLocation Loc, QualType T, |
1628 | TypeDiagnoser &Diagnoser); |
1629 | bool RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID); |
1630 | |
1631 | template <typename... Ts> |
1632 | bool RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID, |
1633 | const Ts &...Args) { |
1634 | BoundTypeDiagnoser<Ts...> Diagnoser(DiagID, Args...); |
1635 | return RequireLiteralType(Loc, T, Diagnoser); |
1636 | } |
1637 | |
1638 | QualType getElaboratedType(ElaboratedTypeKeyword Keyword, |
1639 | const CXXScopeSpec &SS, QualType T); |
1640 | |
1641 | QualType BuildTypeofExprType(Expr *E, SourceLocation Loc); |
1642 | /// If AsUnevaluated is false, E is treated as though it were an evaluated |
1643 | /// context, such as when building a type for decltype(auto). |
1644 | QualType BuildDecltypeType(Expr *E, SourceLocation Loc, |
1645 | bool AsUnevaluated = true); |
1646 | QualType BuildUnaryTransformType(QualType BaseType, |
1647 | UnaryTransformType::UTTKind UKind, |
1648 | SourceLocation Loc); |
1649 | |
1650 | //===--------------------------------------------------------------------===// |
1651 | // Symbol table / Decl tracking callbacks: SemaDecl.cpp. |
1652 | // |
1653 | |
1654 | struct SkipBodyInfo { |
1655 | SkipBodyInfo() |
1656 | : ShouldSkip(false), CheckSameAsPrevious(false), Previous(nullptr), |
1657 | New(nullptr) {} |
1658 | bool ShouldSkip; |
1659 | bool CheckSameAsPrevious; |
1660 | NamedDecl *Previous; |
1661 | NamedDecl *New; |
1662 | }; |
1663 | |
1664 | DeclGroupPtrTy ConvertDeclToDeclGroup(Decl *Ptr, Decl *OwnedType = nullptr); |
1665 | |
1666 | void DiagnoseUseOfUnimplementedSelectors(); |
1667 | |
1668 | bool isSimpleTypeSpecifier(tok::TokenKind Kind) const; |
1669 | |
1670 | ParsedType getTypeName(const IdentifierInfo &II, SourceLocation NameLoc, |
1671 | Scope *S, CXXScopeSpec *SS = nullptr, |
1672 | bool isClassName = false, bool HasTrailingDot = false, |
1673 | ParsedType ObjectType = nullptr, |
1674 | bool IsCtorOrDtorName = false, |
1675 | bool WantNontrivialTypeSourceInfo = false, |
1676 | bool IsClassTemplateDeductionContext = true, |
1677 | IdentifierInfo **CorrectedII = nullptr); |
1678 | TypeSpecifierType isTagName(IdentifierInfo &II, Scope *S); |
1679 | bool isMicrosoftMissingTypename(const CXXScopeSpec *SS, Scope *S); |
1680 | void DiagnoseUnknownTypeName(IdentifierInfo *&II, |
1681 | SourceLocation IILoc, |
1682 | Scope *S, |
1683 | CXXScopeSpec *SS, |
1684 | ParsedType &SuggestedType, |
1685 | bool IsTemplateName = false); |
1686 | |
1687 | /// Attempt to behave like MSVC in situations where lookup of an unqualified |
1688 | /// type name has failed in a dependent context. In these situations, we |
1689 | /// automatically form a DependentTypeName that will retry lookup in a related |
1690 | /// scope during instantiation. |
1691 | ParsedType ActOnMSVCUnknownTypeName(const IdentifierInfo &II, |
1692 | SourceLocation NameLoc, |
1693 | bool IsTemplateTypeArg); |
1694 | |
1695 | /// \brief Describes the result of the name lookup and resolution performed |
1696 | /// by \c ClassifyName(). |
1697 | enum NameClassificationKind { |
1698 | NC_Unknown, |
1699 | NC_Error, |
1700 | NC_Keyword, |
1701 | NC_Type, |
1702 | NC_Expression, |
1703 | NC_NestedNameSpecifier, |
1704 | NC_TypeTemplate, |
1705 | NC_VarTemplate, |
1706 | NC_FunctionTemplate |
1707 | }; |
1708 | |
1709 | class NameClassification { |
1710 | NameClassificationKind Kind; |
1711 | ExprResult Expr; |
1712 | TemplateName Template; |
1713 | ParsedType Type; |
1714 | |
1715 | explicit NameClassification(NameClassificationKind Kind) : Kind(Kind) {} |
1716 | |
1717 | public: |
1718 | NameClassification(ExprResult Expr) : Kind(NC_Expression), Expr(Expr) {} |
1719 | |
1720 | NameClassification(ParsedType Type) : Kind(NC_Type), Type(Type) {} |
1721 | |
1722 | NameClassification(const IdentifierInfo *Keyword) : Kind(NC_Keyword) {} |
1723 | |
1724 | static NameClassification Error() { |
1725 | return NameClassification(NC_Error); |
1726 | } |
1727 | |
1728 | static NameClassification Unknown() { |
1729 | return NameClassification(NC_Unknown); |
1730 | } |
1731 | |
1732 | static NameClassification NestedNameSpecifier() { |
1733 | return NameClassification(NC_NestedNameSpecifier); |
1734 | } |
1735 | |
1736 | static NameClassification TypeTemplate(TemplateName Name) { |
1737 | NameClassification Result(NC_TypeTemplate); |
1738 | Result.Template = Name; |
1739 | return Result; |
1740 | } |
1741 | |
1742 | static NameClassification VarTemplate(TemplateName Name) { |
1743 | NameClassification Result(NC_VarTemplate); |
1744 | Result.Template = Name; |
1745 | return Result; |
1746 | } |
1747 | |
1748 | static NameClassification FunctionTemplate(TemplateName Name) { |
1749 | NameClassification Result(NC_FunctionTemplate); |
1750 | Result.Template = Name; |
1751 | return Result; |
1752 | } |
1753 | |
1754 | NameClassificationKind getKind() const { return Kind; } |
1755 | |
1756 | ParsedType getType() const { |
1757 | assert(Kind == NC_Type)(static_cast <bool> (Kind == NC_Type) ? void (0) : __assert_fail ("Kind == NC_Type", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 1757, __extension__ __PRETTY_FUNCTION__)); |
1758 | return Type; |
1759 | } |
1760 | |
1761 | ExprResult getExpression() const { |
1762 | assert(Kind == NC_Expression)(static_cast <bool> (Kind == NC_Expression) ? void (0) : __assert_fail ("Kind == NC_Expression", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 1762, __extension__ __PRETTY_FUNCTION__)); |
1763 | return Expr; |
1764 | } |
1765 | |
1766 | TemplateName getTemplateName() const { |
1767 | assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate ||(static_cast <bool> (Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate) ? void (0) : __assert_fail ("Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 1768, __extension__ __PRETTY_FUNCTION__)) |
1768 | Kind == NC_VarTemplate)(static_cast <bool> (Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate) ? void (0) : __assert_fail ("Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate || Kind == NC_VarTemplate" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 1768, __extension__ __PRETTY_FUNCTION__)); |
1769 | return Template; |
1770 | } |
1771 | |
1772 | TemplateNameKind getTemplateNameKind() const { |
1773 | switch (Kind) { |
1774 | case NC_TypeTemplate: |
1775 | return TNK_Type_template; |
1776 | case NC_FunctionTemplate: |
1777 | return TNK_Function_template; |
1778 | case NC_VarTemplate: |
1779 | return TNK_Var_template; |
1780 | default: |
1781 | llvm_unreachable("unsupported name classification.")::llvm::llvm_unreachable_internal("unsupported name classification." , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 1781); |
1782 | } |
1783 | } |
1784 | }; |
1785 | |
1786 | /// \brief Perform name lookup on the given name, classifying it based on |
1787 | /// the results of name lookup and the following token. |
1788 | /// |
1789 | /// This routine is used by the parser to resolve identifiers and help direct |
1790 | /// parsing. When the identifier cannot be found, this routine will attempt |
1791 | /// to correct the typo and classify based on the resulting name. |
1792 | /// |
1793 | /// \param S The scope in which we're performing name lookup. |
1794 | /// |
1795 | /// \param SS The nested-name-specifier that precedes the name. |
1796 | /// |
1797 | /// \param Name The identifier. If typo correction finds an alternative name, |
1798 | /// this pointer parameter will be updated accordingly. |
1799 | /// |
1800 | /// \param NameLoc The location of the identifier. |
1801 | /// |
1802 | /// \param NextToken The token following the identifier. Used to help |
1803 | /// disambiguate the name. |
1804 | /// |
1805 | /// \param IsAddressOfOperand True if this name is the operand of a unary |
1806 | /// address of ('&') expression, assuming it is classified as an |
1807 | /// expression. |
1808 | /// |
1809 | /// \param CCC The correction callback, if typo correction is desired. |
1810 | NameClassification |
1811 | ClassifyName(Scope *S, CXXScopeSpec &SS, IdentifierInfo *&Name, |
1812 | SourceLocation NameLoc, const Token &NextToken, |
1813 | bool IsAddressOfOperand, |
1814 | std::unique_ptr<CorrectionCandidateCallback> CCC = nullptr); |
1815 | |
1816 | /// Describes the detailed kind of a template name. Used in diagnostics. |
1817 | enum class TemplateNameKindForDiagnostics { |
1818 | ClassTemplate, |
1819 | FunctionTemplate, |
1820 | VarTemplate, |
1821 | AliasTemplate, |
1822 | TemplateTemplateParam, |
1823 | DependentTemplate |
1824 | }; |
1825 | TemplateNameKindForDiagnostics |
1826 | getTemplateNameKindForDiagnostics(TemplateName Name); |
1827 | |
1828 | /// Determine whether it's plausible that E was intended to be a |
1829 | /// template-name. |
1830 | bool mightBeIntendedToBeTemplateName(ExprResult E) { |
1831 | if (!getLangOpts().CPlusPlus || E.isInvalid()) |
1832 | return false; |
1833 | if (auto *DRE = dyn_cast<DeclRefExpr>(E.get())) |
1834 | return !DRE->hasExplicitTemplateArgs(); |
1835 | if (auto *ME = dyn_cast<MemberExpr>(E.get())) |
1836 | return !ME->hasExplicitTemplateArgs(); |
1837 | // Any additional cases recognized here should also be handled by |
1838 | // diagnoseExprIntendedAsTemplateName. |
1839 | return false; |
1840 | } |
1841 | void diagnoseExprIntendedAsTemplateName(Scope *S, ExprResult TemplateName, |
1842 | SourceLocation Less, |
1843 | SourceLocation Greater); |
1844 | |
1845 | Decl *ActOnDeclarator(Scope *S, Declarator &D); |
1846 | |
1847 | NamedDecl *HandleDeclarator(Scope *S, Declarator &D, |
1848 | MultiTemplateParamsArg TemplateParameterLists); |
1849 | void RegisterLocallyScopedExternCDecl(NamedDecl *ND, Scope *S); |
1850 | bool DiagnoseClassNameShadow(DeclContext *DC, DeclarationNameInfo Info); |
1851 | bool diagnoseQualifiedDeclaration(CXXScopeSpec &SS, DeclContext *DC, |
1852 | DeclarationName Name, SourceLocation Loc, |
1853 | bool IsTemplateId); |
1854 | void |
1855 | diagnoseIgnoredQualifiers(unsigned DiagID, unsigned Quals, |
1856 | SourceLocation FallbackLoc, |
1857 | SourceLocation ConstQualLoc = SourceLocation(), |
1858 | SourceLocation VolatileQualLoc = SourceLocation(), |
1859 | SourceLocation RestrictQualLoc = SourceLocation(), |
1860 | SourceLocation AtomicQualLoc = SourceLocation(), |
1861 | SourceLocation UnalignedQualLoc = SourceLocation()); |
1862 | |
1863 | static bool adjustContextForLocalExternDecl(DeclContext *&DC); |
1864 | void DiagnoseFunctionSpecifiers(const DeclSpec &DS); |
1865 | NamedDecl *getShadowedDeclaration(const TypedefNameDecl *D, |
1866 | const LookupResult &R); |
1867 | NamedDecl *getShadowedDeclaration(const VarDecl *D, const LookupResult &R); |
1868 | void CheckShadow(NamedDecl *D, NamedDecl *ShadowedDecl, |
1869 | const LookupResult &R); |
1870 | void CheckShadow(Scope *S, VarDecl *D); |
1871 | |
1872 | /// Warn if 'E', which is an expression that is about to be modified, refers |
1873 | /// to a shadowing declaration. |
1874 | void CheckShadowingDeclModification(Expr *E, SourceLocation Loc); |
1875 | |
1876 | void DiagnoseShadowingLambdaDecls(const sema::LambdaScopeInfo *LSI); |
1877 | |
1878 | private: |
1879 | /// Map of current shadowing declarations to shadowed declarations. Warn if |
1880 | /// it looks like the user is trying to modify the shadowing declaration. |
1881 | llvm::DenseMap<const NamedDecl *, const NamedDecl *> ShadowingDecls; |
1882 | |
1883 | public: |
1884 | void CheckCastAlign(Expr *Op, QualType T, SourceRange TRange); |
1885 | void handleTagNumbering(const TagDecl *Tag, Scope *TagScope); |
1886 | void setTagNameForLinkagePurposes(TagDecl *TagFromDeclSpec, |
1887 | TypedefNameDecl *NewTD); |
1888 | void CheckTypedefForVariablyModifiedType(Scope *S, TypedefNameDecl *D); |
1889 | NamedDecl* ActOnTypedefDeclarator(Scope* S, Declarator& D, DeclContext* DC, |
1890 | TypeSourceInfo *TInfo, |
1891 | LookupResult &Previous); |
1892 | NamedDecl* ActOnTypedefNameDecl(Scope* S, DeclContext* DC, TypedefNameDecl *D, |
1893 | LookupResult &Previous, bool &Redeclaration); |
1894 | NamedDecl *ActOnVariableDeclarator(Scope *S, Declarator &D, DeclContext *DC, |
1895 | TypeSourceInfo *TInfo, |
1896 | LookupResult &Previous, |
1897 | MultiTemplateParamsArg TemplateParamLists, |
1898 | bool &AddToScope, |
1899 | ArrayRef<BindingDecl *> Bindings = None); |
1900 | NamedDecl * |
1901 | ActOnDecompositionDeclarator(Scope *S, Declarator &D, |
1902 | MultiTemplateParamsArg TemplateParamLists); |
1903 | // Returns true if the variable declaration is a redeclaration |
1904 | bool CheckVariableDeclaration(VarDecl *NewVD, LookupResult &Previous); |
1905 | void CheckVariableDeclarationType(VarDecl *NewVD); |
1906 | bool DeduceVariableDeclarationType(VarDecl *VDecl, bool DirectInit, |
1907 | Expr *Init); |
1908 | void CheckCompleteVariableDeclaration(VarDecl *VD); |
1909 | void CheckCompleteDecompositionDeclaration(DecompositionDecl *DD); |
1910 | void MaybeSuggestAddingStaticToDecl(const FunctionDecl *D); |
1911 | |
1912 | NamedDecl* ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC, |
1913 | TypeSourceInfo *TInfo, |
1914 | LookupResult &Previous, |
1915 | MultiTemplateParamsArg TemplateParamLists, |
1916 | bool &AddToScope); |
1917 | bool AddOverriddenMethods(CXXRecordDecl *DC, CXXMethodDecl *MD); |
1918 | |
1919 | bool CheckConstexprFunctionDecl(const FunctionDecl *FD); |
1920 | bool CheckConstexprFunctionBody(const FunctionDecl *FD, Stmt *Body); |
1921 | |
1922 | void DiagnoseHiddenVirtualMethods(CXXMethodDecl *MD); |
1923 | void FindHiddenVirtualMethods(CXXMethodDecl *MD, |
1924 | SmallVectorImpl<CXXMethodDecl*> &OverloadedMethods); |
1925 | void NoteHiddenVirtualMethods(CXXMethodDecl *MD, |
1926 | SmallVectorImpl<CXXMethodDecl*> &OverloadedMethods); |
1927 | // Returns true if the function declaration is a redeclaration |
1928 | bool CheckFunctionDeclaration(Scope *S, |
1929 | FunctionDecl *NewFD, LookupResult &Previous, |
1930 | bool IsMemberSpecialization); |
1931 | bool shouldLinkDependentDeclWithPrevious(Decl *D, Decl *OldDecl); |
1932 | void CheckMain(FunctionDecl *FD, const DeclSpec &D); |
1933 | void CheckMSVCRTEntryPoint(FunctionDecl *FD); |
1934 | Decl *ActOnParamDeclarator(Scope *S, Declarator &D); |
1935 | ParmVarDecl *BuildParmVarDeclForTypedef(DeclContext *DC, |
1936 | SourceLocation Loc, |
1937 | QualType T); |
1938 | ParmVarDecl *CheckParameter(DeclContext *DC, SourceLocation StartLoc, |
1939 | SourceLocation NameLoc, IdentifierInfo *Name, |
1940 | QualType T, TypeSourceInfo *TSInfo, |
1941 | StorageClass SC); |
1942 | void ActOnParamDefaultArgument(Decl *param, |
1943 | SourceLocation EqualLoc, |
1944 | Expr *defarg); |
1945 | void ActOnParamUnparsedDefaultArgument(Decl *param, |
1946 | SourceLocation EqualLoc, |
1947 | SourceLocation ArgLoc); |
1948 | void ActOnParamDefaultArgumentError(Decl *param, SourceLocation EqualLoc); |
1949 | bool SetParamDefaultArgument(ParmVarDecl *Param, Expr *DefaultArg, |
1950 | SourceLocation EqualLoc); |
1951 | |
1952 | void AddInitializerToDecl(Decl *dcl, Expr *init, bool DirectInit); |
1953 | void ActOnUninitializedDecl(Decl *dcl); |
1954 | void ActOnInitializerError(Decl *Dcl); |
1955 | |
1956 | void ActOnPureSpecifier(Decl *D, SourceLocation PureSpecLoc); |
1957 | void ActOnCXXForRangeDecl(Decl *D); |
1958 | StmtResult ActOnCXXForRangeIdentifier(Scope *S, SourceLocation IdentLoc, |
1959 | IdentifierInfo *Ident, |
1960 | ParsedAttributes &Attrs, |
1961 | SourceLocation AttrEnd); |
1962 | void SetDeclDeleted(Decl *dcl, SourceLocation DelLoc); |
1963 | void SetDeclDefaulted(Decl *dcl, SourceLocation DefaultLoc); |
1964 | void FinalizeDeclaration(Decl *D); |
1965 | DeclGroupPtrTy FinalizeDeclaratorGroup(Scope *S, const DeclSpec &DS, |
1966 | ArrayRef<Decl *> Group); |
1967 | DeclGroupPtrTy BuildDeclaratorGroup(MutableArrayRef<Decl *> Group); |
1968 | |
1969 | /// Should be called on all declarations that might have attached |
1970 | /// documentation comments. |
1971 | void ActOnDocumentableDecl(Decl *D); |
1972 | void ActOnDocumentableDecls(ArrayRef<Decl *> Group); |
1973 | |
1974 | void ActOnFinishKNRParamDeclarations(Scope *S, Declarator &D, |
1975 | SourceLocation LocAfterDecls); |
1976 | void CheckForFunctionRedefinition( |
1977 | FunctionDecl *FD, const FunctionDecl *EffectiveDefinition = nullptr, |
1978 | SkipBodyInfo *SkipBody = nullptr); |
1979 | Decl *ActOnStartOfFunctionDef(Scope *S, Declarator &D, |
1980 | MultiTemplateParamsArg TemplateParamLists, |
1981 | SkipBodyInfo *SkipBody = nullptr); |
1982 | Decl *ActOnStartOfFunctionDef(Scope *S, Decl *D, |
1983 | SkipBodyInfo *SkipBody = nullptr); |
1984 | void ActOnStartOfObjCMethodDef(Scope *S, Decl *D); |
1985 | bool isObjCMethodDecl(Decl *D) { |
1986 | return D && isa<ObjCMethodDecl>(D); |
1987 | } |
1988 | |
1989 | /// \brief Determine whether we can delay parsing the body of a function or |
1990 | /// function template until it is used, assuming we don't care about emitting |
1991 | /// code for that function. |
1992 | /// |
1993 | /// This will be \c false if we may need the body of the function in the |
1994 | /// middle of parsing an expression (where it's impractical to switch to |
1995 | /// parsing a different function), for instance, if it's constexpr in C++11 |
1996 | /// or has an 'auto' return type in C++14. These cases are essentially bugs. |
1997 | bool canDelayFunctionBody(const Declarator &D); |
1998 | |
1999 | /// \brief Determine whether we can skip parsing the body of a function |
2000 | /// definition, assuming we don't care about analyzing its body or emitting |
2001 | /// code for that function. |
2002 | /// |
2003 | /// This will be \c false only if we may need the body of the function in |
2004 | /// order to parse the rest of the program (for instance, if it is |
2005 | /// \c constexpr in C++11 or has an 'auto' return type in C++14). |
2006 | bool canSkipFunctionBody(Decl *D); |
2007 | |
2008 | void computeNRVO(Stmt *Body, sema::FunctionScopeInfo *Scope); |
2009 | Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body); |
2010 | Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body, bool IsInstantiation); |
2011 | Decl *ActOnSkippedFunctionBody(Decl *Decl); |
2012 | void ActOnFinishInlineFunctionDef(FunctionDecl *D); |
2013 | |
2014 | /// ActOnFinishDelayedAttribute - Invoked when we have finished parsing an |
2015 | /// attribute for which parsing is delayed. |
2016 | void ActOnFinishDelayedAttribute(Scope *S, Decl *D, ParsedAttributes &Attrs); |
2017 | |
2018 | /// \brief Diagnose any unused parameters in the given sequence of |
2019 | /// ParmVarDecl pointers. |
2020 | void DiagnoseUnusedParameters(ArrayRef<ParmVarDecl *> Parameters); |
2021 | |
2022 | /// \brief Diagnose whether the size of parameters or return value of a |
2023 | /// function or obj-c method definition is pass-by-value and larger than a |
2024 | /// specified threshold. |
2025 | void |
2026 | DiagnoseSizeOfParametersAndReturnValue(ArrayRef<ParmVarDecl *> Parameters, |
2027 | QualType ReturnTy, NamedDecl *D); |
2028 | |
2029 | void DiagnoseInvalidJumps(Stmt *Body); |
2030 | Decl *ActOnFileScopeAsmDecl(Expr *expr, |
2031 | SourceLocation AsmLoc, |
2032 | SourceLocation RParenLoc); |
2033 | |
2034 | /// \brief Handle a C++11 empty-declaration and attribute-declaration. |
2035 | Decl *ActOnEmptyDeclaration(Scope *S, |
2036 | AttributeList *AttrList, |
2037 | SourceLocation SemiLoc); |
2038 | |
2039 | enum class ModuleDeclKind { |
2040 | Interface, ///< 'export module X;' |
2041 | Implementation, ///< 'module X;' |
2042 | Partition, ///< 'module partition X;' |
2043 | }; |
2044 | |
2045 | /// The parser has processed a module-declaration that begins the definition |
2046 | /// of a module interface or implementation. |
2047 | DeclGroupPtrTy ActOnModuleDecl(SourceLocation StartLoc, |
2048 | SourceLocation ModuleLoc, ModuleDeclKind MDK, |
2049 | ModuleIdPath Path); |
2050 | |
2051 | /// \brief The parser has processed a module import declaration. |
2052 | /// |
2053 | /// \param AtLoc The location of the '@' symbol, if any. |
2054 | /// |
2055 | /// \param ImportLoc The location of the 'import' keyword. |
2056 | /// |
2057 | /// \param Path The module access path. |
2058 | DeclResult ActOnModuleImport(SourceLocation AtLoc, SourceLocation ImportLoc, |
2059 | ModuleIdPath Path); |
2060 | |
2061 | /// \brief The parser has processed a module import translated from a |
2062 | /// #include or similar preprocessing directive. |
2063 | void ActOnModuleInclude(SourceLocation DirectiveLoc, Module *Mod); |
2064 | void BuildModuleInclude(SourceLocation DirectiveLoc, Module *Mod); |
2065 | |
2066 | /// \brief The parsed has entered a submodule. |
2067 | void ActOnModuleBegin(SourceLocation DirectiveLoc, Module *Mod); |
2068 | /// \brief The parser has left a submodule. |
2069 | void ActOnModuleEnd(SourceLocation DirectiveLoc, Module *Mod); |
2070 | |
2071 | /// \brief Create an implicit import of the given module at the given |
2072 | /// source location, for error recovery, if possible. |
2073 | /// |
2074 | /// This routine is typically used when an entity found by name lookup |
2075 | /// is actually hidden within a module that we know about but the user |
2076 | /// has forgotten to import. |
2077 | void createImplicitModuleImportForErrorRecovery(SourceLocation Loc, |
2078 | Module *Mod); |
2079 | |
2080 | /// Kinds of missing import. Note, the values of these enumerators correspond |
2081 | /// to %select values in diagnostics. |
2082 | enum class MissingImportKind { |
2083 | Declaration, |
2084 | Definition, |
2085 | DefaultArgument, |
2086 | ExplicitSpecialization, |
2087 | PartialSpecialization |
2088 | }; |
2089 | |
2090 | /// \brief Diagnose that the specified declaration needs to be visible but |
2091 | /// isn't, and suggest a module import that would resolve the problem. |
2092 | void diagnoseMissingImport(SourceLocation Loc, NamedDecl *Decl, |
2093 | MissingImportKind MIK, bool Recover = true); |
2094 | void diagnoseMissingImport(SourceLocation Loc, NamedDecl *Decl, |
2095 | SourceLocation DeclLoc, ArrayRef<Module *> Modules, |
2096 | MissingImportKind MIK, bool Recover); |
2097 | |
2098 | Decl *ActOnStartExportDecl(Scope *S, SourceLocation ExportLoc, |
2099 | SourceLocation LBraceLoc); |
2100 | Decl *ActOnFinishExportDecl(Scope *S, Decl *ExportDecl, |
2101 | SourceLocation RBraceLoc); |
2102 | |
2103 | /// \brief We've found a use of a templated declaration that would trigger an |
2104 | /// implicit instantiation. Check that any relevant explicit specializations |
2105 | /// and partial specializations are visible, and diagnose if not. |
2106 | void checkSpecializationVisibility(SourceLocation Loc, NamedDecl *Spec); |
2107 | |
2108 | /// \brief We've found a use of a template specialization that would select a |
2109 | /// partial specialization. Check that the partial specialization is visible, |
2110 | /// and diagnose if not. |
2111 | void checkPartialSpecializationVisibility(SourceLocation Loc, |
2112 | NamedDecl *Spec); |
2113 | |
2114 | /// \brief Retrieve a suitable printing policy. |
2115 | PrintingPolicy getPrintingPolicy() const { |
2116 | return getPrintingPolicy(Context, PP); |
2117 | } |
2118 | |
2119 | /// \brief Retrieve a suitable printing policy. |
2120 | static PrintingPolicy getPrintingPolicy(const ASTContext &Ctx, |
2121 | const Preprocessor &PP); |
2122 | |
2123 | /// Scope actions. |
2124 | void ActOnPopScope(SourceLocation Loc, Scope *S); |
2125 | void ActOnTranslationUnitScope(Scope *S); |
2126 | |
2127 | Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, |
2128 | RecordDecl *&AnonRecord); |
2129 | Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, |
2130 | MultiTemplateParamsArg TemplateParams, |
2131 | bool IsExplicitInstantiation, |
2132 | RecordDecl *&AnonRecord); |
2133 | |
2134 | Decl *BuildAnonymousStructOrUnion(Scope *S, DeclSpec &DS, |
2135 | AccessSpecifier AS, |
2136 | RecordDecl *Record, |
2137 | const PrintingPolicy &Policy); |
2138 | |
2139 | Decl *BuildMicrosoftCAnonymousStruct(Scope *S, DeclSpec &DS, |
2140 | RecordDecl *Record); |
2141 | |
2142 | /// Common ways to introduce type names without a tag for use in diagnostics. |
2143 | /// Keep in sync with err_tag_reference_non_tag. |
2144 | enum NonTagKind { |
2145 | NTK_NonStruct, |
2146 | NTK_NonClass, |
2147 | NTK_NonUnion, |
2148 | NTK_NonEnum, |
2149 | NTK_Typedef, |
2150 | NTK_TypeAlias, |
2151 | NTK_Template, |
2152 | NTK_TypeAliasTemplate, |
2153 | NTK_TemplateTemplateArgument, |
2154 | }; |
2155 | |
2156 | /// Given a non-tag type declaration, returns an enum useful for indicating |
2157 | /// what kind of non-tag type this is. |
2158 | NonTagKind getNonTagTypeDeclKind(const Decl *D, TagTypeKind TTK); |
2159 | |
2160 | bool isAcceptableTagRedeclaration(const TagDecl *Previous, |
2161 | TagTypeKind NewTag, bool isDefinition, |
2162 | SourceLocation NewTagLoc, |
2163 | const IdentifierInfo *Name); |
2164 | |
2165 | enum TagUseKind { |
2166 | TUK_Reference, // Reference to a tag: 'struct foo *X;' |
2167 | TUK_Declaration, // Fwd decl of a tag: 'struct foo;' |
2168 | TUK_Definition, // Definition of a tag: 'struct foo { int X; } Y;' |
2169 | TUK_Friend // Friend declaration: 'friend struct foo;' |
2170 | }; |
2171 | |
2172 | Decl *ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, |
2173 | SourceLocation KWLoc, CXXScopeSpec &SS, IdentifierInfo *Name, |
2174 | SourceLocation NameLoc, AttributeList *Attr, |
2175 | AccessSpecifier AS, SourceLocation ModulePrivateLoc, |
2176 | MultiTemplateParamsArg TemplateParameterLists, bool &OwnedDecl, |
2177 | bool &IsDependent, SourceLocation ScopedEnumKWLoc, |
2178 | bool ScopedEnumUsesClassTag, TypeResult UnderlyingType, |
2179 | bool IsTypeSpecifier, bool IsTemplateParamOrArg, |
2180 | SkipBodyInfo *SkipBody = nullptr); |
2181 | |
2182 | Decl *ActOnTemplatedFriendTag(Scope *S, SourceLocation FriendLoc, |
2183 | unsigned TagSpec, SourceLocation TagLoc, |
2184 | CXXScopeSpec &SS, |
2185 | IdentifierInfo *Name, SourceLocation NameLoc, |
2186 | AttributeList *Attr, |
2187 | MultiTemplateParamsArg TempParamLists); |
2188 | |
2189 | TypeResult ActOnDependentTag(Scope *S, |
2190 | unsigned TagSpec, |
2191 | TagUseKind TUK, |
2192 | const CXXScopeSpec &SS, |
2193 | IdentifierInfo *Name, |
2194 | SourceLocation TagLoc, |
2195 | SourceLocation NameLoc); |
2196 | |
2197 | void ActOnDefs(Scope *S, Decl *TagD, SourceLocation DeclStart, |
2198 | IdentifierInfo *ClassName, |
2199 | SmallVectorImpl<Decl *> &Decls); |
2200 | Decl *ActOnField(Scope *S, Decl *TagD, SourceLocation DeclStart, |
2201 | Declarator &D, Expr *BitfieldWidth); |
2202 | |
2203 | FieldDecl *HandleField(Scope *S, RecordDecl *TagD, SourceLocation DeclStart, |
2204 | Declarator &D, Expr *BitfieldWidth, |
2205 | InClassInitStyle InitStyle, |
2206 | AccessSpecifier AS); |
2207 | MSPropertyDecl *HandleMSProperty(Scope *S, RecordDecl *TagD, |
2208 | SourceLocation DeclStart, |
2209 | Declarator &D, Expr *BitfieldWidth, |
2210 | InClassInitStyle InitStyle, |
2211 | AccessSpecifier AS, |
2212 | AttributeList *MSPropertyAttr); |
2213 | |
2214 | FieldDecl *CheckFieldDecl(DeclarationName Name, QualType T, |
2215 | TypeSourceInfo *TInfo, |
2216 | RecordDecl *Record, SourceLocation Loc, |
2217 | bool Mutable, Expr *BitfieldWidth, |
2218 | InClassInitStyle InitStyle, |
2219 | SourceLocation TSSL, |
2220 | AccessSpecifier AS, NamedDecl *PrevDecl, |
2221 | Declarator *D = nullptr); |
2222 | |
2223 | bool CheckNontrivialField(FieldDecl *FD); |
2224 | void DiagnoseNontrivial(const CXXRecordDecl *Record, CXXSpecialMember CSM); |
2225 | |
2226 | enum TrivialABIHandling { |
2227 | /// The triviality of a method unaffected by "trivial_abi". |
2228 | TAH_IgnoreTrivialABI, |
2229 | |
2230 | /// The triviality of a method affected by "trivial_abi". |
2231 | TAH_ConsiderTrivialABI |
2232 | }; |
2233 | |
2234 | bool SpecialMemberIsTrivial(CXXMethodDecl *MD, CXXSpecialMember CSM, |
2235 | TrivialABIHandling TAH = TAH_IgnoreTrivialABI, |
2236 | bool Diagnose = false); |
2237 | CXXSpecialMember getSpecialMember(const CXXMethodDecl *MD); |
2238 | void ActOnLastBitfield(SourceLocation DeclStart, |
2239 | SmallVectorImpl<Decl *> &AllIvarDecls); |
2240 | Decl *ActOnIvar(Scope *S, SourceLocation DeclStart, |
2241 | Declarator &D, Expr *BitfieldWidth, |
2242 | tok::ObjCKeywordKind visibility); |
2243 | |
2244 | // This is used for both record definitions and ObjC interface declarations. |
2245 | void ActOnFields(Scope* S, SourceLocation RecLoc, Decl *TagDecl, |
2246 | ArrayRef<Decl *> Fields, |
2247 | SourceLocation LBrac, SourceLocation RBrac, |
2248 | AttributeList *AttrList); |
2249 | |
2250 | /// ActOnTagStartDefinition - Invoked when we have entered the |
2251 | /// scope of a tag's definition (e.g., for an enumeration, class, |
2252 | /// struct, or union). |
2253 | void ActOnTagStartDefinition(Scope *S, Decl *TagDecl); |
2254 | |
2255 | /// Perform ODR-like check for C/ObjC when merging tag types from modules. |
2256 | /// Differently from C++, actually parse the body and reject / error out |
2257 | /// in case of a structural mismatch. |
2258 | bool ActOnDuplicateDefinition(DeclSpec &DS, Decl *Prev, |
2259 | SkipBodyInfo &SkipBody); |
2260 | |
2261 | typedef void *SkippedDefinitionContext; |
2262 | |
2263 | /// \brief Invoked when we enter a tag definition that we're skipping. |
2264 | SkippedDefinitionContext ActOnTagStartSkippedDefinition(Scope *S, Decl *TD); |
2265 | |
2266 | Decl *ActOnObjCContainerStartDefinition(Decl *IDecl); |
2267 | |
2268 | /// ActOnStartCXXMemberDeclarations - Invoked when we have parsed a |
2269 | /// C++ record definition's base-specifiers clause and are starting its |
2270 | /// member declarations. |
2271 | void ActOnStartCXXMemberDeclarations(Scope *S, Decl *TagDecl, |
2272 | SourceLocation FinalLoc, |
2273 | bool IsFinalSpelledSealed, |
2274 | SourceLocation LBraceLoc); |
2275 | |
2276 | /// ActOnTagFinishDefinition - Invoked once we have finished parsing |
2277 | /// the definition of a tag (enumeration, class, struct, or union). |
2278 | void ActOnTagFinishDefinition(Scope *S, Decl *TagDecl, |
2279 | SourceRange BraceRange); |
2280 | |
2281 | void ActOnTagFinishSkippedDefinition(SkippedDefinitionContext Context); |
2282 | |
2283 | void ActOnObjCContainerFinishDefinition(); |
2284 | |
2285 | /// \brief Invoked when we must temporarily exit the objective-c container |
2286 | /// scope for parsing/looking-up C constructs. |
2287 | /// |
2288 | /// Must be followed by a call to \see ActOnObjCReenterContainerContext |
2289 | void ActOnObjCTemporaryExitContainerContext(DeclContext *DC); |
2290 | void ActOnObjCReenterContainerContext(DeclContext *DC); |
2291 | |
2292 | /// ActOnTagDefinitionError - Invoked when there was an unrecoverable |
2293 | /// error parsing the definition of a tag. |
2294 | void ActOnTagDefinitionError(Scope *S, Decl *TagDecl); |
2295 | |
2296 | EnumConstantDecl *CheckEnumConstant(EnumDecl *Enum, |
2297 | EnumConstantDecl *LastEnumConst, |
2298 | SourceLocation IdLoc, |
2299 | IdentifierInfo *Id, |
2300 | Expr *val); |
2301 | bool CheckEnumUnderlyingType(TypeSourceInfo *TI); |
2302 | bool CheckEnumRedeclaration(SourceLocation EnumLoc, bool IsScoped, |
2303 | QualType EnumUnderlyingTy, bool IsFixed, |
2304 | const EnumDecl *Prev); |
2305 | |
2306 | /// Determine whether the body of an anonymous enumeration should be skipped. |
2307 | /// \param II The name of the first enumerator. |
2308 | SkipBodyInfo shouldSkipAnonEnumBody(Scope *S, IdentifierInfo *II, |
2309 | SourceLocation IILoc); |
2310 | |
2311 | Decl *ActOnEnumConstant(Scope *S, Decl *EnumDecl, Decl *LastEnumConstant, |
2312 | SourceLocation IdLoc, IdentifierInfo *Id, |
2313 | AttributeList *Attrs, SourceLocation EqualLoc, |
2314 | Expr *Val); |
2315 | void ActOnEnumBody(SourceLocation EnumLoc, SourceRange BraceRange, |
2316 | Decl *EnumDecl, |
2317 | ArrayRef<Decl *> Elements, |
2318 | Scope *S, AttributeList *Attr); |
2319 | |
2320 | DeclContext *getContainingDC(DeclContext *DC); |
2321 | |
2322 | /// Set the current declaration context until it gets popped. |
2323 | void PushDeclContext(Scope *S, DeclContext *DC); |
2324 | void PopDeclContext(); |
2325 | |
2326 | /// EnterDeclaratorContext - Used when we must lookup names in the context |
2327 | /// of a declarator's nested name specifier. |
2328 | void EnterDeclaratorContext(Scope *S, DeclContext *DC); |
2329 | void ExitDeclaratorContext(Scope *S); |
2330 | |
2331 | /// Push the parameters of D, which must be a function, into scope. |
2332 | void ActOnReenterFunctionContext(Scope* S, Decl* D); |
2333 | void ActOnExitFunctionContext(); |
2334 | |
2335 | DeclContext *getFunctionLevelDeclContext(); |
2336 | |
2337 | /// getCurFunctionDecl - If inside of a function body, this returns a pointer |
2338 | /// to the function decl for the function being parsed. If we're currently |
2339 | /// in a 'block', this returns the containing context. |
2340 | FunctionDecl *getCurFunctionDecl(); |
2341 | |
2342 | /// getCurMethodDecl - If inside of a method body, this returns a pointer to |
2343 | /// the method decl for the method being parsed. If we're currently |
2344 | /// in a 'block', this returns the containing context. |
2345 | ObjCMethodDecl *getCurMethodDecl(); |
2346 | |
2347 | /// getCurFunctionOrMethodDecl - Return the Decl for the current ObjC method |
2348 | /// or C function we're in, otherwise return null. If we're currently |
2349 | /// in a 'block', this returns the containing context. |
2350 | NamedDecl *getCurFunctionOrMethodDecl(); |
2351 | |
2352 | /// Add this decl to the scope shadowed decl chains. |
2353 | void PushOnScopeChains(NamedDecl *D, Scope *S, bool AddToContext = true); |
2354 | |
2355 | /// \brief Make the given externally-produced declaration visible at the |
2356 | /// top level scope. |
2357 | /// |
2358 | /// \param D The externally-produced declaration to push. |
2359 | /// |
2360 | /// \param Name The name of the externally-produced declaration. |
2361 | void pushExternalDeclIntoScope(NamedDecl *D, DeclarationName Name); |
2362 | |
2363 | /// isDeclInScope - If 'Ctx' is a function/method, isDeclInScope returns true |
2364 | /// if 'D' is in Scope 'S', otherwise 'S' is ignored and isDeclInScope returns |
2365 | /// true if 'D' belongs to the given declaration context. |
2366 | /// |
2367 | /// \param AllowInlineNamespace If \c true, allow the declaration to be in the |
2368 | /// enclosing namespace set of the context, rather than contained |
2369 | /// directly within it. |
2370 | bool isDeclInScope(NamedDecl *D, DeclContext *Ctx, Scope *S = nullptr, |
2371 | bool AllowInlineNamespace = false); |
2372 | |
2373 | /// Finds the scope corresponding to the given decl context, if it |
2374 | /// happens to be an enclosing scope. Otherwise return NULL. |
2375 | static Scope *getScopeForDeclContext(Scope *S, DeclContext *DC); |
2376 | |
2377 | /// Subroutines of ActOnDeclarator(). |
2378 | TypedefDecl *ParseTypedefDecl(Scope *S, Declarator &D, QualType T, |
2379 | TypeSourceInfo *TInfo); |
2380 | bool isIncompatibleTypedef(TypeDecl *Old, TypedefNameDecl *New); |
2381 | |
2382 | /// \brief Describes the kind of merge to perform for availability |
2383 | /// attributes (including "deprecated", "unavailable", and "availability"). |
2384 | enum AvailabilityMergeKind { |
2385 | /// \brief Don't merge availability attributes at all. |
2386 | AMK_None, |
2387 | /// \brief Merge availability attributes for a redeclaration, which requires |
2388 | /// an exact match. |
2389 | AMK_Redeclaration, |
2390 | /// \brief Merge availability attributes for an override, which requires |
2391 | /// an exact match or a weakening of constraints. |
2392 | AMK_Override, |
2393 | /// \brief Merge availability attributes for an implementation of |
2394 | /// a protocol requirement. |
2395 | AMK_ProtocolImplementation, |
2396 | }; |
2397 | |
2398 | /// Attribute merging methods. Return true if a new attribute was added. |
2399 | AvailabilityAttr *mergeAvailabilityAttr(NamedDecl *D, SourceRange Range, |
2400 | IdentifierInfo *Platform, |
2401 | bool Implicit, |
2402 | VersionTuple Introduced, |
2403 | VersionTuple Deprecated, |
2404 | VersionTuple Obsoleted, |
2405 | bool IsUnavailable, |
2406 | StringRef Message, |
2407 | bool IsStrict, StringRef Replacement, |
2408 | AvailabilityMergeKind AMK, |
2409 | unsigned AttrSpellingListIndex); |
2410 | TypeVisibilityAttr *mergeTypeVisibilityAttr(Decl *D, SourceRange Range, |
2411 | TypeVisibilityAttr::VisibilityType Vis, |
2412 | unsigned AttrSpellingListIndex); |
2413 | VisibilityAttr *mergeVisibilityAttr(Decl *D, SourceRange Range, |
2414 | VisibilityAttr::VisibilityType Vis, |
2415 | unsigned AttrSpellingListIndex); |
2416 | UuidAttr *mergeUuidAttr(Decl *D, SourceRange Range, |
2417 | unsigned AttrSpellingListIndex, StringRef Uuid); |
2418 | DLLImportAttr *mergeDLLImportAttr(Decl *D, SourceRange Range, |
2419 | unsigned AttrSpellingListIndex); |
2420 | DLLExportAttr *mergeDLLExportAttr(Decl *D, SourceRange Range, |
2421 | unsigned AttrSpellingListIndex); |
2422 | MSInheritanceAttr * |
2423 | mergeMSInheritanceAttr(Decl *D, SourceRange Range, bool BestCase, |
2424 | unsigned AttrSpellingListIndex, |
2425 | MSInheritanceAttr::Spelling SemanticSpelling); |
2426 | FormatAttr *mergeFormatAttr(Decl *D, SourceRange Range, |
2427 | IdentifierInfo *Format, int FormatIdx, |
2428 | int FirstArg, unsigned AttrSpellingListIndex); |
2429 | SectionAttr *mergeSectionAttr(Decl *D, SourceRange Range, StringRef Name, |
2430 | unsigned AttrSpellingListIndex); |
2431 | AlwaysInlineAttr *mergeAlwaysInlineAttr(Decl *D, SourceRange Range, |
2432 | IdentifierInfo *Ident, |
2433 | unsigned AttrSpellingListIndex); |
2434 | MinSizeAttr *mergeMinSizeAttr(Decl *D, SourceRange Range, |
2435 | unsigned AttrSpellingListIndex); |
2436 | OptimizeNoneAttr *mergeOptimizeNoneAttr(Decl *D, SourceRange Range, |
2437 | unsigned AttrSpellingListIndex); |
2438 | InternalLinkageAttr *mergeInternalLinkageAttr(Decl *D, SourceRange Range, |
2439 | IdentifierInfo *Ident, |
2440 | unsigned AttrSpellingListIndex); |
2441 | CommonAttr *mergeCommonAttr(Decl *D, SourceRange Range, IdentifierInfo *Ident, |
2442 | unsigned AttrSpellingListIndex); |
2443 | |
2444 | void mergeDeclAttributes(NamedDecl *New, Decl *Old, |
2445 | AvailabilityMergeKind AMK = AMK_Redeclaration); |
2446 | void MergeTypedefNameDecl(Scope *S, TypedefNameDecl *New, |
2447 | LookupResult &OldDecls); |
2448 | bool MergeFunctionDecl(FunctionDecl *New, NamedDecl *&Old, Scope *S, |
2449 | bool MergeTypeWithOld); |
2450 | bool MergeCompatibleFunctionDecls(FunctionDecl *New, FunctionDecl *Old, |
2451 | Scope *S, bool MergeTypeWithOld); |
2452 | void mergeObjCMethodDecls(ObjCMethodDecl *New, ObjCMethodDecl *Old); |
2453 | void MergeVarDecl(VarDecl *New, LookupResult &Previous); |
2454 | void MergeVarDeclTypes(VarDecl *New, VarDecl *Old, bool MergeTypeWithOld); |
2455 | void MergeVarDeclExceptionSpecs(VarDecl *New, VarDecl *Old); |
2456 | bool checkVarDeclRedefinition(VarDecl *OldDefn, VarDecl *NewDefn); |
2457 | void notePreviousDefinition(const NamedDecl *Old, SourceLocation New); |
2458 | bool MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old, Scope *S); |
2459 | |
2460 | // AssignmentAction - This is used by all the assignment diagnostic functions |
2461 | // to represent what is actually causing the operation |
2462 | enum AssignmentAction { |
2463 | AA_Assigning, |
2464 | AA_Passing, |
2465 | AA_Returning, |
2466 | AA_Converting, |
2467 | AA_Initializing, |
2468 | AA_Sending, |
2469 | AA_Casting, |
2470 | AA_Passing_CFAudited |
2471 | }; |
2472 | |
2473 | /// C++ Overloading. |
2474 | enum OverloadKind { |
2475 | /// This is a legitimate overload: the existing declarations are |
2476 | /// functions or function templates with different signatures. |
2477 | Ovl_Overload, |
2478 | |
2479 | /// This is not an overload because the signature exactly matches |
2480 | /// an existing declaration. |
2481 | Ovl_Match, |
2482 | |
2483 | /// This is not an overload because the lookup results contain a |
2484 | /// non-function. |
2485 | Ovl_NonFunction |
2486 | }; |
2487 | OverloadKind CheckOverload(Scope *S, |
2488 | FunctionDecl *New, |
2489 | const LookupResult &OldDecls, |
2490 | NamedDecl *&OldDecl, |
2491 | bool IsForUsingDecl); |
2492 | bool IsOverload(FunctionDecl *New, FunctionDecl *Old, bool IsForUsingDecl, |
2493 | bool ConsiderCudaAttrs = true); |
2494 | |
2495 | /// \brief Checks availability of the function depending on the current |
2496 | /// function context.Inside an unavailable function,unavailability is ignored. |
2497 | /// |
2498 | /// \returns true if \p FD is unavailable and current context is inside |
2499 | /// an available function, false otherwise. |
2500 | bool isFunctionConsideredUnavailable(FunctionDecl *FD); |
2501 | |
2502 | ImplicitConversionSequence |
2503 | TryImplicitConversion(Expr *From, QualType ToType, |
2504 | bool SuppressUserConversions, |
2505 | bool AllowExplicit, |
2506 | bool InOverloadResolution, |
2507 | bool CStyle, |
2508 | bool AllowObjCWritebackConversion); |
2509 | |
2510 | bool IsIntegralPromotion(Expr *From, QualType FromType, QualType ToType); |
2511 | bool IsFloatingPointPromotion(QualType FromType, QualType ToType); |
2512 | bool IsComplexPromotion(QualType FromType, QualType ToType); |
2513 | bool IsPointerConversion(Expr *From, QualType FromType, QualType ToType, |
2514 | bool InOverloadResolution, |
2515 | QualType& ConvertedType, bool &IncompatibleObjC); |
2516 | bool isObjCPointerConversion(QualType FromType, QualType ToType, |
2517 | QualType& ConvertedType, bool &IncompatibleObjC); |
2518 | bool isObjCWritebackConversion(QualType FromType, QualType ToType, |
2519 | QualType &ConvertedType); |
2520 | bool IsBlockPointerConversion(QualType FromType, QualType ToType, |
2521 | QualType& ConvertedType); |
2522 | bool FunctionParamTypesAreEqual(const FunctionProtoType *OldType, |
2523 | const FunctionProtoType *NewType, |
2524 | unsigned *ArgPos = nullptr); |
2525 | void HandleFunctionTypeMismatch(PartialDiagnostic &PDiag, |
2526 | QualType FromType, QualType ToType); |
2527 | |
2528 | void maybeExtendBlockObject(ExprResult &E); |
2529 | CastKind PrepareCastToObjCObjectPointer(ExprResult &E); |
2530 | bool CheckPointerConversion(Expr *From, QualType ToType, |
2531 | CastKind &Kind, |
2532 | CXXCastPath& BasePath, |
2533 | bool IgnoreBaseAccess, |
2534 | bool Diagnose = true); |
2535 | bool IsMemberPointerConversion(Expr *From, QualType FromType, QualType ToType, |
2536 | bool InOverloadResolution, |
2537 | QualType &ConvertedType); |
2538 | bool CheckMemberPointerConversion(Expr *From, QualType ToType, |
2539 | CastKind &Kind, |
2540 | CXXCastPath &BasePath, |
2541 | bool IgnoreBaseAccess); |
2542 | bool IsQualificationConversion(QualType FromType, QualType ToType, |
2543 | bool CStyle, bool &ObjCLifetimeConversion); |
2544 | bool IsFunctionConversion(QualType FromType, QualType ToType, |
2545 | QualType &ResultTy); |
2546 | bool DiagnoseMultipleUserDefinedConversion(Expr *From, QualType ToType); |
2547 | bool isSameOrCompatibleFunctionType(CanQualType Param, CanQualType Arg); |
2548 | |
2549 | ExprResult PerformMoveOrCopyInitialization(const InitializedEntity &Entity, |
2550 | const VarDecl *NRVOCandidate, |
2551 | QualType ResultType, |
2552 | Expr *Value, |
2553 | bool AllowNRVO = true); |
2554 | |
2555 | bool CanPerformCopyInitialization(const InitializedEntity &Entity, |
2556 | ExprResult Init); |
2557 | ExprResult PerformCopyInitialization(const InitializedEntity &Entity, |
2558 | SourceLocation EqualLoc, |
2559 | ExprResult Init, |
2560 | bool TopLevelOfInitList = false, |
2561 | bool AllowExplicit = false); |
2562 | ExprResult PerformObjectArgumentInitialization(Expr *From, |
2563 | NestedNameSpecifier *Qualifier, |
2564 | NamedDecl *FoundDecl, |
2565 | CXXMethodDecl *Method); |
2566 | |
2567 | ExprResult PerformContextuallyConvertToBool(Expr *From); |
2568 | ExprResult PerformContextuallyConvertToObjCPointer(Expr *From); |
2569 | |
2570 | /// Contexts in which a converted constant expression is required. |
2571 | enum CCEKind { |
2572 | CCEK_CaseValue, ///< Expression in a case label. |
2573 | CCEK_Enumerator, ///< Enumerator value with fixed underlying type. |
2574 | CCEK_TemplateArg, ///< Value of a non-type template parameter. |
2575 | CCEK_NewExpr, ///< Constant expression in a noptr-new-declarator. |
2576 | CCEK_ConstexprIf ///< Condition in a constexpr if statement. |
2577 | }; |
2578 | ExprResult CheckConvertedConstantExpression(Expr *From, QualType T, |
2579 | llvm::APSInt &Value, CCEKind CCE); |
2580 | ExprResult CheckConvertedConstantExpression(Expr *From, QualType T, |
2581 | APValue &Value, CCEKind CCE); |
2582 | |
2583 | /// \brief Abstract base class used to perform a contextual implicit |
2584 | /// conversion from an expression to any type passing a filter. |
2585 | class ContextualImplicitConverter { |
2586 | public: |
2587 | bool Suppress; |
2588 | bool SuppressConversion; |
2589 | |
2590 | ContextualImplicitConverter(bool Suppress = false, |
2591 | bool SuppressConversion = false) |
2592 | : Suppress(Suppress), SuppressConversion(SuppressConversion) {} |
2593 | |
2594 | /// \brief Determine whether the specified type is a valid destination type |
2595 | /// for this conversion. |
2596 | virtual bool match(QualType T) = 0; |
2597 | |
2598 | /// \brief Emits a diagnostic complaining that the expression does not have |
2599 | /// integral or enumeration type. |
2600 | virtual SemaDiagnosticBuilder |
2601 | diagnoseNoMatch(Sema &S, SourceLocation Loc, QualType T) = 0; |
2602 | |
2603 | /// \brief Emits a diagnostic when the expression has incomplete class type. |
2604 | virtual SemaDiagnosticBuilder |
2605 | diagnoseIncomplete(Sema &S, SourceLocation Loc, QualType T) = 0; |
2606 | |
2607 | /// \brief Emits a diagnostic when the only matching conversion function |
2608 | /// is explicit. |
2609 | virtual SemaDiagnosticBuilder diagnoseExplicitConv( |
2610 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) = 0; |
2611 | |
2612 | /// \brief Emits a note for the explicit conversion function. |
2613 | virtual SemaDiagnosticBuilder |
2614 | noteExplicitConv(Sema &S, CXXConversionDecl *Conv, QualType ConvTy) = 0; |
2615 | |
2616 | /// \brief Emits a diagnostic when there are multiple possible conversion |
2617 | /// functions. |
2618 | virtual SemaDiagnosticBuilder |
2619 | diagnoseAmbiguous(Sema &S, SourceLocation Loc, QualType T) = 0; |
2620 | |
2621 | /// \brief Emits a note for one of the candidate conversions. |
2622 | virtual SemaDiagnosticBuilder |
2623 | noteAmbiguous(Sema &S, CXXConversionDecl *Conv, QualType ConvTy) = 0; |
2624 | |
2625 | /// \brief Emits a diagnostic when we picked a conversion function |
2626 | /// (for cases when we are not allowed to pick a conversion function). |
2627 | virtual SemaDiagnosticBuilder diagnoseConversion( |
2628 | Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) = 0; |
2629 | |
2630 | virtual ~ContextualImplicitConverter() {} |
2631 | }; |
2632 | |
2633 | class ICEConvertDiagnoser : public ContextualImplicitConverter { |
2634 | bool AllowScopedEnumerations; |
2635 | |
2636 | public: |
2637 | ICEConvertDiagnoser(bool AllowScopedEnumerations, |
2638 | bool Suppress, bool SuppressConversion) |
2639 | : ContextualImplicitConverter(Suppress, SuppressConversion), |
2640 | AllowScopedEnumerations(AllowScopedEnumerations) {} |
2641 | |
2642 | /// Match an integral or (possibly scoped) enumeration type. |
2643 | bool match(QualType T) override; |
2644 | |
2645 | SemaDiagnosticBuilder |
2646 | diagnoseNoMatch(Sema &S, SourceLocation Loc, QualType T) override { |
2647 | return diagnoseNotInt(S, Loc, T); |
2648 | } |
2649 | |
2650 | /// \brief Emits a diagnostic complaining that the expression does not have |
2651 | /// integral or enumeration type. |
2652 | virtual SemaDiagnosticBuilder |
2653 | diagnoseNotInt(Sema &S, SourceLocation Loc, QualType T) = 0; |
2654 | }; |
2655 | |
2656 | /// Perform a contextual implicit conversion. |
2657 | ExprResult PerformContextualImplicitConversion( |
2658 | SourceLocation Loc, Expr *FromE, ContextualImplicitConverter &Converter); |
2659 | |
2660 | |
2661 | enum ObjCSubscriptKind { |
2662 | OS_Array, |
2663 | OS_Dictionary, |
2664 | OS_Error |
2665 | }; |
2666 | ObjCSubscriptKind CheckSubscriptingKind(Expr *FromE); |
2667 | |
2668 | // Note that LK_String is intentionally after the other literals, as |
2669 | // this is used for diagnostics logic. |
2670 | enum ObjCLiteralKind { |
2671 | LK_Array, |
2672 | LK_Dictionary, |
2673 | LK_Numeric, |
2674 | LK_Boxed, |
2675 | LK_String, |
2676 | LK_Block, |
2677 | LK_None |
2678 | }; |
2679 | ObjCLiteralKind CheckLiteralKind(Expr *FromE); |
2680 | |
2681 | ExprResult PerformObjectMemberConversion(Expr *From, |
2682 | NestedNameSpecifier *Qualifier, |
2683 | NamedDecl *FoundDecl, |
2684 | NamedDecl *Member); |
2685 | |
2686 | // Members have to be NamespaceDecl* or TranslationUnitDecl*. |
2687 | // TODO: make this is a typesafe union. |
2688 | typedef llvm::SmallSetVector<DeclContext *, 16> AssociatedNamespaceSet; |
2689 | typedef llvm::SmallSetVector<CXXRecordDecl *, 16> AssociatedClassSet; |
2690 | |
2691 | void AddOverloadCandidate(FunctionDecl *Function, |
2692 | DeclAccessPair FoundDecl, |
2693 | ArrayRef<Expr *> Args, |
2694 | OverloadCandidateSet &CandidateSet, |
2695 | bool SuppressUserConversions = false, |
2696 | bool PartialOverloading = false, |
2697 | bool AllowExplicit = false, |
2698 | ConversionSequenceList EarlyConversions = None); |
2699 | void AddFunctionCandidates(const UnresolvedSetImpl &Functions, |
2700 | ArrayRef<Expr *> Args, |
2701 | OverloadCandidateSet &CandidateSet, |
2702 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr, |
2703 | bool SuppressUserConversions = false, |
2704 | bool PartialOverloading = false, |
2705 | bool FirstArgumentIsBase = false); |
2706 | void AddMethodCandidate(DeclAccessPair FoundDecl, |
2707 | QualType ObjectType, |
2708 | Expr::Classification ObjectClassification, |
2709 | ArrayRef<Expr *> Args, |
2710 | OverloadCandidateSet& CandidateSet, |
2711 | bool SuppressUserConversion = false); |
2712 | void AddMethodCandidate(CXXMethodDecl *Method, |
2713 | DeclAccessPair FoundDecl, |
2714 | CXXRecordDecl *ActingContext, QualType ObjectType, |
2715 | Expr::Classification ObjectClassification, |
2716 | ArrayRef<Expr *> Args, |
2717 | OverloadCandidateSet& CandidateSet, |
2718 | bool SuppressUserConversions = false, |
2719 | bool PartialOverloading = false, |
2720 | ConversionSequenceList EarlyConversions = None); |
2721 | void AddMethodTemplateCandidate(FunctionTemplateDecl *MethodTmpl, |
2722 | DeclAccessPair FoundDecl, |
2723 | CXXRecordDecl *ActingContext, |
2724 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
2725 | QualType ObjectType, |
2726 | Expr::Classification ObjectClassification, |
2727 | ArrayRef<Expr *> Args, |
2728 | OverloadCandidateSet& CandidateSet, |
2729 | bool SuppressUserConversions = false, |
2730 | bool PartialOverloading = false); |
2731 | void AddTemplateOverloadCandidate(FunctionTemplateDecl *FunctionTemplate, |
2732 | DeclAccessPair FoundDecl, |
2733 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
2734 | ArrayRef<Expr *> Args, |
2735 | OverloadCandidateSet& CandidateSet, |
2736 | bool SuppressUserConversions = false, |
2737 | bool PartialOverloading = false); |
2738 | bool CheckNonDependentConversions(FunctionTemplateDecl *FunctionTemplate, |
2739 | ArrayRef<QualType> ParamTypes, |
2740 | ArrayRef<Expr *> Args, |
2741 | OverloadCandidateSet &CandidateSet, |
2742 | ConversionSequenceList &Conversions, |
2743 | bool SuppressUserConversions, |
2744 | CXXRecordDecl *ActingContext = nullptr, |
2745 | QualType ObjectType = QualType(), |
2746 | Expr::Classification |
2747 | ObjectClassification = {}); |
2748 | void AddConversionCandidate(CXXConversionDecl *Conversion, |
2749 | DeclAccessPair FoundDecl, |
2750 | CXXRecordDecl *ActingContext, |
2751 | Expr *From, QualType ToType, |
2752 | OverloadCandidateSet& CandidateSet, |
2753 | bool AllowObjCConversionOnExplicit, |
2754 | bool AllowResultConversion = true); |
2755 | void AddTemplateConversionCandidate(FunctionTemplateDecl *FunctionTemplate, |
2756 | DeclAccessPair FoundDecl, |
2757 | CXXRecordDecl *ActingContext, |
2758 | Expr *From, QualType ToType, |
2759 | OverloadCandidateSet &CandidateSet, |
2760 | bool AllowObjCConversionOnExplicit, |
2761 | bool AllowResultConversion = true); |
2762 | void AddSurrogateCandidate(CXXConversionDecl *Conversion, |
2763 | DeclAccessPair FoundDecl, |
2764 | CXXRecordDecl *ActingContext, |
2765 | const FunctionProtoType *Proto, |
2766 | Expr *Object, ArrayRef<Expr *> Args, |
2767 | OverloadCandidateSet& CandidateSet); |
2768 | void AddMemberOperatorCandidates(OverloadedOperatorKind Op, |
2769 | SourceLocation OpLoc, ArrayRef<Expr *> Args, |
2770 | OverloadCandidateSet& CandidateSet, |
2771 | SourceRange OpRange = SourceRange()); |
2772 | void AddBuiltinCandidate(QualType *ParamTys, ArrayRef<Expr *> Args, |
2773 | OverloadCandidateSet& CandidateSet, |
2774 | bool IsAssignmentOperator = false, |
2775 | unsigned NumContextualBoolArguments = 0); |
2776 | void AddBuiltinOperatorCandidates(OverloadedOperatorKind Op, |
2777 | SourceLocation OpLoc, ArrayRef<Expr *> Args, |
2778 | OverloadCandidateSet& CandidateSet); |
2779 | void AddArgumentDependentLookupCandidates(DeclarationName Name, |
2780 | SourceLocation Loc, |
2781 | ArrayRef<Expr *> Args, |
2782 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
2783 | OverloadCandidateSet& CandidateSet, |
2784 | bool PartialOverloading = false); |
2785 | |
2786 | // Emit as a 'note' the specific overload candidate |
2787 | void NoteOverloadCandidate(NamedDecl *Found, FunctionDecl *Fn, |
2788 | QualType DestType = QualType(), |
2789 | bool TakingAddress = false); |
2790 | |
2791 | // Emit as a series of 'note's all template and non-templates identified by |
2792 | // the expression Expr |
2793 | void NoteAllOverloadCandidates(Expr *E, QualType DestType = QualType(), |
2794 | bool TakingAddress = false); |
2795 | |
2796 | /// Check the enable_if expressions on the given function. Returns the first |
2797 | /// failing attribute, or NULL if they were all successful. |
2798 | EnableIfAttr *CheckEnableIf(FunctionDecl *Function, ArrayRef<Expr *> Args, |
2799 | bool MissingImplicitThis = false); |
2800 | |
2801 | /// Find the failed Boolean condition within a given Boolean |
2802 | /// constant expression, and describe it with a string. |
2803 | /// |
2804 | /// \param AllowTopLevelCond Whether to allow the result to be the |
2805 | /// complete top-level condition. |
2806 | std::pair<Expr *, std::string> |
2807 | findFailedBooleanCondition(Expr *Cond, bool AllowTopLevelCond); |
2808 | |
2809 | /// Emit diagnostics for the diagnose_if attributes on Function, ignoring any |
2810 | /// non-ArgDependent DiagnoseIfAttrs. |
2811 | /// |
2812 | /// Argument-dependent diagnose_if attributes should be checked each time a |
2813 | /// function is used as a direct callee of a function call. |
2814 | /// |
2815 | /// Returns true if any errors were emitted. |
2816 | bool diagnoseArgDependentDiagnoseIfAttrs(const FunctionDecl *Function, |
2817 | const Expr *ThisArg, |
2818 | ArrayRef<const Expr *> Args, |
2819 | SourceLocation Loc); |
2820 | |
2821 | /// Emit diagnostics for the diagnose_if attributes on Function, ignoring any |
2822 | /// ArgDependent DiagnoseIfAttrs. |
2823 | /// |
2824 | /// Argument-independent diagnose_if attributes should be checked on every use |
2825 | /// of a function. |
2826 | /// |
2827 | /// Returns true if any errors were emitted. |
2828 | bool diagnoseArgIndependentDiagnoseIfAttrs(const NamedDecl *ND, |
2829 | SourceLocation Loc); |
2830 | |
2831 | /// Returns whether the given function's address can be taken or not, |
2832 | /// optionally emitting a diagnostic if the address can't be taken. |
2833 | /// |
2834 | /// Returns false if taking the address of the function is illegal. |
2835 | bool checkAddressOfFunctionIsAvailable(const FunctionDecl *Function, |
2836 | bool Complain = false, |
2837 | SourceLocation Loc = SourceLocation()); |
2838 | |
2839 | // [PossiblyAFunctionType] --> [Return] |
2840 | // NonFunctionType --> NonFunctionType |
2841 | // R (A) --> R(A) |
2842 | // R (*)(A) --> R (A) |
2843 | // R (&)(A) --> R (A) |
2844 | // R (S::*)(A) --> R (A) |
2845 | QualType ExtractUnqualifiedFunctionType(QualType PossiblyAFunctionType); |
2846 | |
2847 | FunctionDecl * |
2848 | ResolveAddressOfOverloadedFunction(Expr *AddressOfExpr, |
2849 | QualType TargetType, |
2850 | bool Complain, |
2851 | DeclAccessPair &Found, |
2852 | bool *pHadMultipleCandidates = nullptr); |
2853 | |
2854 | FunctionDecl * |
2855 | resolveAddressOfOnlyViableOverloadCandidate(Expr *E, |
2856 | DeclAccessPair &FoundResult); |
2857 | |
2858 | bool resolveAndFixAddressOfOnlyViableOverloadCandidate( |
2859 | ExprResult &SrcExpr, bool DoFunctionPointerConversion = false); |
2860 | |
2861 | FunctionDecl * |
2862 | ResolveSingleFunctionTemplateSpecialization(OverloadExpr *ovl, |
2863 | bool Complain = false, |
2864 | DeclAccessPair *Found = nullptr); |
2865 | |
2866 | bool ResolveAndFixSingleFunctionTemplateSpecialization( |
2867 | ExprResult &SrcExpr, |
2868 | bool DoFunctionPointerConverion = false, |
2869 | bool Complain = false, |
2870 | SourceRange OpRangeForComplaining = SourceRange(), |
2871 | QualType DestTypeForComplaining = QualType(), |
2872 | unsigned DiagIDForComplaining = 0); |
2873 | |
2874 | |
2875 | Expr *FixOverloadedFunctionReference(Expr *E, |
2876 | DeclAccessPair FoundDecl, |
2877 | FunctionDecl *Fn); |
2878 | ExprResult FixOverloadedFunctionReference(ExprResult, |
2879 | DeclAccessPair FoundDecl, |
2880 | FunctionDecl *Fn); |
2881 | |
2882 | void AddOverloadedCallCandidates(UnresolvedLookupExpr *ULE, |
2883 | ArrayRef<Expr *> Args, |
2884 | OverloadCandidateSet &CandidateSet, |
2885 | bool PartialOverloading = false); |
2886 | |
2887 | // An enum used to represent the different possible results of building a |
2888 | // range-based for loop. |
2889 | enum ForRangeStatus { |
2890 | FRS_Success, |
2891 | FRS_NoViableFunction, |
2892 | FRS_DiagnosticIssued |
2893 | }; |
2894 | |
2895 | ForRangeStatus BuildForRangeBeginEndCall(SourceLocation Loc, |
2896 | SourceLocation RangeLoc, |
2897 | const DeclarationNameInfo &NameInfo, |
2898 | LookupResult &MemberLookup, |
2899 | OverloadCandidateSet *CandidateSet, |
2900 | Expr *Range, ExprResult *CallExpr); |
2901 | |
2902 | ExprResult BuildOverloadedCallExpr(Scope *S, Expr *Fn, |
2903 | UnresolvedLookupExpr *ULE, |
2904 | SourceLocation LParenLoc, |
2905 | MultiExprArg Args, |
2906 | SourceLocation RParenLoc, |
2907 | Expr *ExecConfig, |
2908 | bool AllowTypoCorrection=true, |
2909 | bool CalleesAddressIsTaken=false); |
2910 | |
2911 | bool buildOverloadedCallSet(Scope *S, Expr *Fn, UnresolvedLookupExpr *ULE, |
2912 | MultiExprArg Args, SourceLocation RParenLoc, |
2913 | OverloadCandidateSet *CandidateSet, |
2914 | ExprResult *Result); |
2915 | |
2916 | ExprResult CreateOverloadedUnaryOp(SourceLocation OpLoc, |
2917 | UnaryOperatorKind Opc, |
2918 | const UnresolvedSetImpl &Fns, |
2919 | Expr *input, bool RequiresADL = true); |
2920 | |
2921 | ExprResult CreateOverloadedBinOp(SourceLocation OpLoc, |
2922 | BinaryOperatorKind Opc, |
2923 | const UnresolvedSetImpl &Fns, |
2924 | Expr *LHS, Expr *RHS, |
2925 | bool RequiresADL = true); |
2926 | |
2927 | ExprResult CreateOverloadedArraySubscriptExpr(SourceLocation LLoc, |
2928 | SourceLocation RLoc, |
2929 | Expr *Base,Expr *Idx); |
2930 | |
2931 | ExprResult |
2932 | BuildCallToMemberFunction(Scope *S, Expr *MemExpr, |
2933 | SourceLocation LParenLoc, |
2934 | MultiExprArg Args, |
2935 | SourceLocation RParenLoc); |
2936 | ExprResult |
2937 | BuildCallToObjectOfClassType(Scope *S, Expr *Object, SourceLocation LParenLoc, |
2938 | MultiExprArg Args, |
2939 | SourceLocation RParenLoc); |
2940 | |
2941 | ExprResult BuildOverloadedArrowExpr(Scope *S, Expr *Base, |
2942 | SourceLocation OpLoc, |
2943 | bool *NoArrowOperatorFound = nullptr); |
2944 | |
2945 | /// CheckCallReturnType - Checks that a call expression's return type is |
2946 | /// complete. Returns true on failure. The location passed in is the location |
2947 | /// that best represents the call. |
2948 | bool CheckCallReturnType(QualType ReturnType, SourceLocation Loc, |
2949 | CallExpr *CE, FunctionDecl *FD); |
2950 | |
2951 | /// Helpers for dealing with blocks and functions. |
2952 | bool CheckParmsForFunctionDef(ArrayRef<ParmVarDecl *> Parameters, |
2953 | bool CheckParameterNames); |
2954 | void CheckCXXDefaultArguments(FunctionDecl *FD); |
2955 | void CheckExtraCXXDefaultArguments(Declarator &D); |
2956 | Scope *getNonFieldDeclScope(Scope *S); |
2957 | |
2958 | /// \name Name lookup |
2959 | /// |
2960 | /// These routines provide name lookup that is used during semantic |
2961 | /// analysis to resolve the various kinds of names (identifiers, |
2962 | /// overloaded operator names, constructor names, etc.) into zero or |
2963 | /// more declarations within a particular scope. The major entry |
2964 | /// points are LookupName, which performs unqualified name lookup, |
2965 | /// and LookupQualifiedName, which performs qualified name lookup. |
2966 | /// |
2967 | /// All name lookup is performed based on some specific criteria, |
2968 | /// which specify what names will be visible to name lookup and how |
2969 | /// far name lookup should work. These criteria are important both |
2970 | /// for capturing language semantics (certain lookups will ignore |
2971 | /// certain names, for example) and for performance, since name |
2972 | /// lookup is often a bottleneck in the compilation of C++. Name |
2973 | /// lookup criteria is specified via the LookupCriteria enumeration. |
2974 | /// |
2975 | /// The results of name lookup can vary based on the kind of name |
2976 | /// lookup performed, the current language, and the translation |
2977 | /// unit. In C, for example, name lookup will either return nothing |
2978 | /// (no entity found) or a single declaration. In C++, name lookup |
2979 | /// can additionally refer to a set of overloaded functions or |
2980 | /// result in an ambiguity. All of the possible results of name |
2981 | /// lookup are captured by the LookupResult class, which provides |
2982 | /// the ability to distinguish among them. |
2983 | //@{ |
2984 | |
2985 | /// @brief Describes the kind of name lookup to perform. |
2986 | enum LookupNameKind { |
2987 | /// Ordinary name lookup, which finds ordinary names (functions, |
2988 | /// variables, typedefs, etc.) in C and most kinds of names |
2989 | /// (functions, variables, members, types, etc.) in C++. |
2990 | LookupOrdinaryName = 0, |
2991 | /// Tag name lookup, which finds the names of enums, classes, |
2992 | /// structs, and unions. |
2993 | LookupTagName, |
2994 | /// Label name lookup. |
2995 | LookupLabel, |
2996 | /// Member name lookup, which finds the names of |
2997 | /// class/struct/union members. |
2998 | LookupMemberName, |
2999 | /// Look up of an operator name (e.g., operator+) for use with |
3000 | /// operator overloading. This lookup is similar to ordinary name |
3001 | /// lookup, but will ignore any declarations that are class members. |
3002 | LookupOperatorName, |
3003 | /// Look up of a name that precedes the '::' scope resolution |
3004 | /// operator in C++. This lookup completely ignores operator, object, |
3005 | /// function, and enumerator names (C++ [basic.lookup.qual]p1). |
3006 | LookupNestedNameSpecifierName, |
3007 | /// Look up a namespace name within a C++ using directive or |
3008 | /// namespace alias definition, ignoring non-namespace names (C++ |
3009 | /// [basic.lookup.udir]p1). |
3010 | LookupNamespaceName, |
3011 | /// Look up all declarations in a scope with the given name, |
3012 | /// including resolved using declarations. This is appropriate |
3013 | /// for checking redeclarations for a using declaration. |
3014 | LookupUsingDeclName, |
3015 | /// Look up an ordinary name that is going to be redeclared as a |
3016 | /// name with linkage. This lookup ignores any declarations that |
3017 | /// are outside of the current scope unless they have linkage. See |
3018 | /// C99 6.2.2p4-5 and C++ [basic.link]p6. |
3019 | LookupRedeclarationWithLinkage, |
3020 | /// Look up a friend of a local class. This lookup does not look |
3021 | /// outside the innermost non-class scope. See C++11 [class.friend]p11. |
3022 | LookupLocalFriendName, |
3023 | /// Look up the name of an Objective-C protocol. |
3024 | LookupObjCProtocolName, |
3025 | /// Look up implicit 'self' parameter of an objective-c method. |
3026 | LookupObjCImplicitSelfParam, |
3027 | /// \brief Look up the name of an OpenMP user-defined reduction operation. |
3028 | LookupOMPReductionName, |
3029 | /// \brief Look up any declaration with any name. |
3030 | LookupAnyName |
3031 | }; |
3032 | |
3033 | /// \brief Specifies whether (or how) name lookup is being performed for a |
3034 | /// redeclaration (vs. a reference). |
3035 | enum RedeclarationKind { |
3036 | /// \brief The lookup is a reference to this name that is not for the |
3037 | /// purpose of redeclaring the name. |
3038 | NotForRedeclaration = 0, |
3039 | /// \brief The lookup results will be used for redeclaration of a name, |
3040 | /// if an entity by that name already exists and is visible. |
3041 | ForVisibleRedeclaration, |
3042 | /// \brief The lookup results will be used for redeclaration of a name |
3043 | /// with external linkage; non-visible lookup results with external linkage |
3044 | /// may also be found. |
3045 | ForExternalRedeclaration |
3046 | }; |
3047 | |
3048 | RedeclarationKind forRedeclarationInCurContext() { |
3049 | // A declaration with an owning module for linkage can never link against |
3050 | // anything that is not visible. We don't need to check linkage here; if |
3051 | // the context has internal linkage, redeclaration lookup won't find things |
3052 | // from other TUs, and we can't safely compute linkage yet in general. |
3053 | if (cast<Decl>(CurContext) |
3054 | ->getOwningModuleForLinkage(/*IgnoreLinkage*/true)) |
3055 | return ForVisibleRedeclaration; |
3056 | return ForExternalRedeclaration; |
3057 | } |
3058 | |
3059 | /// \brief The possible outcomes of name lookup for a literal operator. |
3060 | enum LiteralOperatorLookupResult { |
3061 | /// \brief The lookup resulted in an error. |
3062 | LOLR_Error, |
3063 | /// \brief The lookup found no match but no diagnostic was issued. |
3064 | LOLR_ErrorNoDiagnostic, |
3065 | /// \brief The lookup found a single 'cooked' literal operator, which |
3066 | /// expects a normal literal to be built and passed to it. |
3067 | LOLR_Cooked, |
3068 | /// \brief The lookup found a single 'raw' literal operator, which expects |
3069 | /// a string literal containing the spelling of the literal token. |
3070 | LOLR_Raw, |
3071 | /// \brief The lookup found an overload set of literal operator templates, |
3072 | /// which expect the characters of the spelling of the literal token to be |
3073 | /// passed as a non-type template argument pack. |
3074 | LOLR_Template, |
3075 | /// \brief The lookup found an overload set of literal operator templates, |
3076 | /// which expect the character type and characters of the spelling of the |
3077 | /// string literal token to be passed as template arguments. |
3078 | LOLR_StringTemplate |
3079 | }; |
3080 | |
3081 | SpecialMemberOverloadResult LookupSpecialMember(CXXRecordDecl *D, |
3082 | CXXSpecialMember SM, |
3083 | bool ConstArg, |
3084 | bool VolatileArg, |
3085 | bool RValueThis, |
3086 | bool ConstThis, |
3087 | bool VolatileThis); |
3088 | |
3089 | typedef std::function<void(const TypoCorrection &)> TypoDiagnosticGenerator; |
3090 | typedef std::function<ExprResult(Sema &, TypoExpr *, TypoCorrection)> |
3091 | TypoRecoveryCallback; |
3092 | |
3093 | private: |
3094 | bool CppLookupName(LookupResult &R, Scope *S); |
3095 | |
3096 | struct TypoExprState { |
3097 | std::unique_ptr<TypoCorrectionConsumer> Consumer; |
3098 | TypoDiagnosticGenerator DiagHandler; |
3099 | TypoRecoveryCallback RecoveryHandler; |
3100 | TypoExprState(); |
3101 | TypoExprState(TypoExprState &&other) noexcept; |
3102 | TypoExprState &operator=(TypoExprState &&other) noexcept; |
3103 | }; |
3104 | |
3105 | /// \brief The set of unhandled TypoExprs and their associated state. |
3106 | llvm::MapVector<TypoExpr *, TypoExprState> DelayedTypos; |
3107 | |
3108 | /// \brief Creates a new TypoExpr AST node. |
3109 | TypoExpr *createDelayedTypo(std::unique_ptr<TypoCorrectionConsumer> TCC, |
3110 | TypoDiagnosticGenerator TDG, |
3111 | TypoRecoveryCallback TRC); |
3112 | |
3113 | // \brief The set of known/encountered (unique, canonicalized) NamespaceDecls. |
3114 | // |
3115 | // The boolean value will be true to indicate that the namespace was loaded |
3116 | // from an AST/PCH file, or false otherwise. |
3117 | llvm::MapVector<NamespaceDecl*, bool> KnownNamespaces; |
3118 | |
3119 | /// \brief Whether we have already loaded known namespaces from an extenal |
3120 | /// source. |
3121 | bool LoadedExternalKnownNamespaces; |
3122 | |
3123 | /// \brief Helper for CorrectTypo and CorrectTypoDelayed used to create and |
3124 | /// populate a new TypoCorrectionConsumer. Returns nullptr if typo correction |
3125 | /// should be skipped entirely. |
3126 | std::unique_ptr<TypoCorrectionConsumer> |
3127 | makeTypoCorrectionConsumer(const DeclarationNameInfo &Typo, |
3128 | Sema::LookupNameKind LookupKind, Scope *S, |
3129 | CXXScopeSpec *SS, |
3130 | std::unique_ptr<CorrectionCandidateCallback> CCC, |
3131 | DeclContext *MemberContext, bool EnteringContext, |
3132 | const ObjCObjectPointerType *OPT, |
3133 | bool ErrorRecovery); |
3134 | |
3135 | public: |
3136 | const TypoExprState &getTypoExprState(TypoExpr *TE) const; |
3137 | |
3138 | /// \brief Clears the state of the given TypoExpr. |
3139 | void clearDelayedTypo(TypoExpr *TE); |
3140 | |
3141 | /// \brief Look up a name, looking for a single declaration. Return |
3142 | /// null if the results were absent, ambiguous, or overloaded. |
3143 | /// |
3144 | /// It is preferable to use the elaborated form and explicitly handle |
3145 | /// ambiguity and overloaded. |
3146 | NamedDecl *LookupSingleName(Scope *S, DeclarationName Name, |
3147 | SourceLocation Loc, |
3148 | LookupNameKind NameKind, |
3149 | RedeclarationKind Redecl |
3150 | = NotForRedeclaration); |
3151 | bool LookupName(LookupResult &R, Scope *S, |
3152 | bool AllowBuiltinCreation = false); |
3153 | bool LookupQualifiedName(LookupResult &R, DeclContext *LookupCtx, |
3154 | bool InUnqualifiedLookup = false); |
3155 | bool LookupQualifiedName(LookupResult &R, DeclContext *LookupCtx, |
3156 | CXXScopeSpec &SS); |
3157 | bool LookupParsedName(LookupResult &R, Scope *S, CXXScopeSpec *SS, |
3158 | bool AllowBuiltinCreation = false, |
3159 | bool EnteringContext = false); |
3160 | ObjCProtocolDecl *LookupProtocol(IdentifierInfo *II, SourceLocation IdLoc, |
3161 | RedeclarationKind Redecl |
3162 | = NotForRedeclaration); |
3163 | bool LookupInSuper(LookupResult &R, CXXRecordDecl *Class); |
3164 | |
3165 | void LookupOverloadedOperatorName(OverloadedOperatorKind Op, Scope *S, |
3166 | QualType T1, QualType T2, |
3167 | UnresolvedSetImpl &Functions); |
3168 | |
3169 | LabelDecl *LookupOrCreateLabel(IdentifierInfo *II, SourceLocation IdentLoc, |
3170 | SourceLocation GnuLabelLoc = SourceLocation()); |
3171 | |
3172 | DeclContextLookupResult LookupConstructors(CXXRecordDecl *Class); |
3173 | CXXConstructorDecl *LookupDefaultConstructor(CXXRecordDecl *Class); |
3174 | CXXConstructorDecl *LookupCopyingConstructor(CXXRecordDecl *Class, |
3175 | unsigned Quals); |
3176 | CXXMethodDecl *LookupCopyingAssignment(CXXRecordDecl *Class, unsigned Quals, |
3177 | bool RValueThis, unsigned ThisQuals); |
3178 | CXXConstructorDecl *LookupMovingConstructor(CXXRecordDecl *Class, |
3179 | unsigned Quals); |
3180 | CXXMethodDecl *LookupMovingAssignment(CXXRecordDecl *Class, unsigned Quals, |
3181 | bool RValueThis, unsigned ThisQuals); |
3182 | CXXDestructorDecl *LookupDestructor(CXXRecordDecl *Class); |
3183 | |
3184 | bool checkLiteralOperatorId(const CXXScopeSpec &SS, const UnqualifiedId &Id); |
3185 | LiteralOperatorLookupResult LookupLiteralOperator(Scope *S, LookupResult &R, |
3186 | ArrayRef<QualType> ArgTys, |
3187 | bool AllowRaw, |
3188 | bool AllowTemplate, |
3189 | bool AllowStringTemplate, |
3190 | bool DiagnoseMissing); |
3191 | bool isKnownName(StringRef name); |
3192 | |
3193 | void ArgumentDependentLookup(DeclarationName Name, SourceLocation Loc, |
3194 | ArrayRef<Expr *> Args, ADLResult &Functions); |
3195 | |
3196 | void LookupVisibleDecls(Scope *S, LookupNameKind Kind, |
3197 | VisibleDeclConsumer &Consumer, |
3198 | bool IncludeGlobalScope = true, |
3199 | bool LoadExternal = true); |
3200 | void LookupVisibleDecls(DeclContext *Ctx, LookupNameKind Kind, |
3201 | VisibleDeclConsumer &Consumer, |
3202 | bool IncludeGlobalScope = true, |
3203 | bool IncludeDependentBases = false, |
3204 | bool LoadExternal = true); |
3205 | |
3206 | enum CorrectTypoKind { |
3207 | CTK_NonError, // CorrectTypo used in a non error recovery situation. |
3208 | CTK_ErrorRecovery // CorrectTypo used in normal error recovery. |
3209 | }; |
3210 | |
3211 | TypoCorrection CorrectTypo(const DeclarationNameInfo &Typo, |
3212 | Sema::LookupNameKind LookupKind, |
3213 | Scope *S, CXXScopeSpec *SS, |
3214 | std::unique_ptr<CorrectionCandidateCallback> CCC, |
3215 | CorrectTypoKind Mode, |
3216 | DeclContext *MemberContext = nullptr, |
3217 | bool EnteringContext = false, |
3218 | const ObjCObjectPointerType *OPT = nullptr, |
3219 | bool RecordFailure = true); |
3220 | |
3221 | TypoExpr *CorrectTypoDelayed(const DeclarationNameInfo &Typo, |
3222 | Sema::LookupNameKind LookupKind, Scope *S, |
3223 | CXXScopeSpec *SS, |
3224 | std::unique_ptr<CorrectionCandidateCallback> CCC, |
3225 | TypoDiagnosticGenerator TDG, |
3226 | TypoRecoveryCallback TRC, CorrectTypoKind Mode, |
3227 | DeclContext *MemberContext = nullptr, |
3228 | bool EnteringContext = false, |
3229 | const ObjCObjectPointerType *OPT = nullptr); |
3230 | |
3231 | /// \brief Process any TypoExprs in the given Expr and its children, |
3232 | /// generating diagnostics as appropriate and returning a new Expr if there |
3233 | /// were typos that were all successfully corrected and ExprError if one or |
3234 | /// more typos could not be corrected. |
3235 | /// |
3236 | /// \param E The Expr to check for TypoExprs. |
3237 | /// |
3238 | /// \param InitDecl A VarDecl to avoid because the Expr being corrected is its |
3239 | /// initializer. |
3240 | /// |
3241 | /// \param Filter A function applied to a newly rebuilt Expr to determine if |
3242 | /// it is an acceptable/usable result from a single combination of typo |
3243 | /// corrections. As long as the filter returns ExprError, different |
3244 | /// combinations of corrections will be tried until all are exhausted. |
3245 | ExprResult |
3246 | CorrectDelayedTyposInExpr(Expr *E, VarDecl *InitDecl = nullptr, |
3247 | llvm::function_ref<ExprResult(Expr *)> Filter = |
3248 | [](Expr *E) -> ExprResult { return E; }); |
3249 | |
3250 | ExprResult |
3251 | CorrectDelayedTyposInExpr(Expr *E, |
3252 | llvm::function_ref<ExprResult(Expr *)> Filter) { |
3253 | return CorrectDelayedTyposInExpr(E, nullptr, Filter); |
3254 | } |
3255 | |
3256 | ExprResult |
3257 | CorrectDelayedTyposInExpr(ExprResult ER, VarDecl *InitDecl = nullptr, |
3258 | llvm::function_ref<ExprResult(Expr *)> Filter = |
3259 | [](Expr *E) -> ExprResult { return E; }) { |
3260 | return ER.isInvalid() ? ER : CorrectDelayedTyposInExpr(ER.get(), Filter); |
3261 | } |
3262 | |
3263 | ExprResult |
3264 | CorrectDelayedTyposInExpr(ExprResult ER, |
3265 | llvm::function_ref<ExprResult(Expr *)> Filter) { |
3266 | return CorrectDelayedTyposInExpr(ER, nullptr, Filter); |
3267 | } |
3268 | |
3269 | void diagnoseTypo(const TypoCorrection &Correction, |
3270 | const PartialDiagnostic &TypoDiag, |
3271 | bool ErrorRecovery = true); |
3272 | |
3273 | void diagnoseTypo(const TypoCorrection &Correction, |
3274 | const PartialDiagnostic &TypoDiag, |
3275 | const PartialDiagnostic &PrevNote, |
3276 | bool ErrorRecovery = true); |
3277 | |
3278 | void MarkTypoCorrectedFunctionDefinition(const NamedDecl *F); |
3279 | |
3280 | void FindAssociatedClassesAndNamespaces(SourceLocation InstantiationLoc, |
3281 | ArrayRef<Expr *> Args, |
3282 | AssociatedNamespaceSet &AssociatedNamespaces, |
3283 | AssociatedClassSet &AssociatedClasses); |
3284 | |
3285 | void FilterLookupForScope(LookupResult &R, DeclContext *Ctx, Scope *S, |
3286 | bool ConsiderLinkage, bool AllowInlineNamespace); |
3287 | |
3288 | bool CheckRedeclarationModuleOwnership(NamedDecl *New, NamedDecl *Old); |
3289 | |
3290 | void DiagnoseAmbiguousLookup(LookupResult &Result); |
3291 | //@} |
3292 | |
3293 | ObjCInterfaceDecl *getObjCInterfaceDecl(IdentifierInfo *&Id, |
3294 | SourceLocation IdLoc, |
3295 | bool TypoCorrection = false); |
3296 | NamedDecl *LazilyCreateBuiltin(IdentifierInfo *II, unsigned ID, |
3297 | Scope *S, bool ForRedeclaration, |
3298 | SourceLocation Loc); |
3299 | NamedDecl *ImplicitlyDefineFunction(SourceLocation Loc, IdentifierInfo &II, |
3300 | Scope *S); |
3301 | void AddKnownFunctionAttributes(FunctionDecl *FD); |
3302 | |
3303 | // More parsing and symbol table subroutines. |
3304 | |
3305 | void ProcessPragmaWeak(Scope *S, Decl *D); |
3306 | // Decl attributes - this routine is the top level dispatcher. |
3307 | void ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD); |
3308 | // Helper for delayed processing of attributes. |
3309 | void ProcessDeclAttributeDelayed(Decl *D, const AttributeList *AttrList); |
3310 | void ProcessDeclAttributeList(Scope *S, Decl *D, const AttributeList *AL, |
3311 | bool IncludeCXX11Attributes = true); |
3312 | bool ProcessAccessDeclAttributeList(AccessSpecDecl *ASDecl, |
3313 | const AttributeList *AttrList); |
3314 | |
3315 | void checkUnusedDeclAttributes(Declarator &D); |
3316 | |
3317 | /// Determine if type T is a valid subject for a nonnull and similar |
3318 | /// attributes. By default, we look through references (the behavior used by |
3319 | /// nonnull), but if the second parameter is true, then we treat a reference |
3320 | /// type as valid. |
3321 | bool isValidPointerAttrType(QualType T, bool RefOkay = false); |
3322 | |
3323 | bool CheckRegparmAttr(const AttributeList &attr, unsigned &value); |
3324 | bool CheckCallingConvAttr(const AttributeList &attr, CallingConv &CC, |
3325 | const FunctionDecl *FD = nullptr); |
3326 | bool CheckAttrTarget(const AttributeList &CurrAttr); |
3327 | bool CheckAttrNoArgs(const AttributeList &CurrAttr); |
3328 | bool checkStringLiteralArgumentAttr(const AttributeList &Attr, |
3329 | unsigned ArgNum, StringRef &Str, |
3330 | SourceLocation *ArgLocation = nullptr); |
3331 | bool checkSectionName(SourceLocation LiteralLoc, StringRef Str); |
3332 | bool checkTargetAttr(SourceLocation LiteralLoc, StringRef Str); |
3333 | bool checkMSInheritanceAttrOnDefinition( |
3334 | CXXRecordDecl *RD, SourceRange Range, bool BestCase, |
3335 | MSInheritanceAttr::Spelling SemanticSpelling); |
3336 | |
3337 | void CheckAlignasUnderalignment(Decl *D); |
3338 | |
3339 | /// Adjust the calling convention of a method to be the ABI default if it |
3340 | /// wasn't specified explicitly. This handles method types formed from |
3341 | /// function type typedefs and typename template arguments. |
3342 | void adjustMemberFunctionCC(QualType &T, bool IsStatic, bool IsCtorOrDtor, |
3343 | SourceLocation Loc); |
3344 | |
3345 | // Check if there is an explicit attribute, but only look through parens. |
3346 | // The intent is to look for an attribute on the current declarator, but not |
3347 | // one that came from a typedef. |
3348 | bool hasExplicitCallingConv(QualType &T); |
3349 | |
3350 | /// Get the outermost AttributedType node that sets a calling convention. |
3351 | /// Valid types should not have multiple attributes with different CCs. |
3352 | const AttributedType *getCallingConvAttributedType(QualType T) const; |
3353 | |
3354 | /// Check whether a nullability type specifier can be added to the given |
3355 | /// type. |
3356 | /// |
3357 | /// \param type The type to which the nullability specifier will be |
3358 | /// added. On success, this type will be updated appropriately. |
3359 | /// |
3360 | /// \param nullability The nullability specifier to add. |
3361 | /// |
3362 | /// \param nullabilityLoc The location of the nullability specifier. |
3363 | /// |
3364 | /// \param isContextSensitive Whether this nullability specifier was |
3365 | /// written as a context-sensitive keyword (in an Objective-C |
3366 | /// method) or an Objective-C property attribute, rather than as an |
3367 | /// underscored type specifier. |
3368 | /// |
3369 | /// \param allowArrayTypes Whether to accept nullability specifiers on an |
3370 | /// array type (e.g., because it will decay to a pointer). |
3371 | /// |
3372 | /// \returns true if nullability cannot be applied, false otherwise. |
3373 | bool checkNullabilityTypeSpecifier(QualType &type, NullabilityKind nullability, |
3374 | SourceLocation nullabilityLoc, |
3375 | bool isContextSensitive, |
3376 | bool allowArrayTypes); |
3377 | |
3378 | /// \brief Stmt attributes - this routine is the top level dispatcher. |
3379 | StmtResult ProcessStmtAttributes(Stmt *Stmt, AttributeList *Attrs, |
3380 | SourceRange Range); |
3381 | |
3382 | void WarnConflictingTypedMethods(ObjCMethodDecl *Method, |
3383 | ObjCMethodDecl *MethodDecl, |
3384 | bool IsProtocolMethodDecl); |
3385 | |
3386 | void CheckConflictingOverridingMethod(ObjCMethodDecl *Method, |
3387 | ObjCMethodDecl *Overridden, |
3388 | bool IsProtocolMethodDecl); |
3389 | |
3390 | /// WarnExactTypedMethods - This routine issues a warning if method |
3391 | /// implementation declaration matches exactly that of its declaration. |
3392 | void WarnExactTypedMethods(ObjCMethodDecl *Method, |
3393 | ObjCMethodDecl *MethodDecl, |
3394 | bool IsProtocolMethodDecl); |
3395 | |
3396 | typedef llvm::SmallPtrSet<Selector, 8> SelectorSet; |
3397 | |
3398 | /// CheckImplementationIvars - This routine checks if the instance variables |
3399 | /// listed in the implelementation match those listed in the interface. |
3400 | void CheckImplementationIvars(ObjCImplementationDecl *ImpDecl, |
3401 | ObjCIvarDecl **Fields, unsigned nIvars, |
3402 | SourceLocation Loc); |
3403 | |
3404 | /// ImplMethodsVsClassMethods - This is main routine to warn if any method |
3405 | /// remains unimplemented in the class or category \@implementation. |
3406 | void ImplMethodsVsClassMethods(Scope *S, ObjCImplDecl* IMPDecl, |
3407 | ObjCContainerDecl* IDecl, |
3408 | bool IncompleteImpl = false); |
3409 | |
3410 | /// DiagnoseUnimplementedProperties - This routine warns on those properties |
3411 | /// which must be implemented by this implementation. |
3412 | void DiagnoseUnimplementedProperties(Scope *S, ObjCImplDecl* IMPDecl, |
3413 | ObjCContainerDecl *CDecl, |
3414 | bool SynthesizeProperties); |
3415 | |
3416 | /// Diagnose any null-resettable synthesized setters. |
3417 | void diagnoseNullResettableSynthesizedSetters(const ObjCImplDecl *impDecl); |
3418 | |
3419 | /// DefaultSynthesizeProperties - This routine default synthesizes all |
3420 | /// properties which must be synthesized in the class's \@implementation. |
3421 | void DefaultSynthesizeProperties(Scope *S, ObjCImplDecl *IMPDecl, |
3422 | ObjCInterfaceDecl *IDecl, |
3423 | SourceLocation AtEnd); |
3424 | void DefaultSynthesizeProperties(Scope *S, Decl *D, SourceLocation AtEnd); |
3425 | |
3426 | /// IvarBacksCurrentMethodAccessor - This routine returns 'true' if 'IV' is |
3427 | /// an ivar synthesized for 'Method' and 'Method' is a property accessor |
3428 | /// declared in class 'IFace'. |
3429 | bool IvarBacksCurrentMethodAccessor(ObjCInterfaceDecl *IFace, |
3430 | ObjCMethodDecl *Method, ObjCIvarDecl *IV); |
3431 | |
3432 | /// DiagnoseUnusedBackingIvarInAccessor - Issue an 'unused' warning if ivar which |
3433 | /// backs the property is not used in the property's accessor. |
3434 | void DiagnoseUnusedBackingIvarInAccessor(Scope *S, |
3435 | const ObjCImplementationDecl *ImplD); |
3436 | |
3437 | /// GetIvarBackingPropertyAccessor - If method is a property setter/getter and |
3438 | /// it property has a backing ivar, returns this ivar; otherwise, returns NULL. |
3439 | /// It also returns ivar's property on success. |
3440 | ObjCIvarDecl *GetIvarBackingPropertyAccessor(const ObjCMethodDecl *Method, |
3441 | const ObjCPropertyDecl *&PDecl) const; |
3442 | |
3443 | /// Called by ActOnProperty to handle \@property declarations in |
3444 | /// class extensions. |
3445 | ObjCPropertyDecl *HandlePropertyInClassExtension(Scope *S, |
3446 | SourceLocation AtLoc, |
3447 | SourceLocation LParenLoc, |
3448 | FieldDeclarator &FD, |
3449 | Selector GetterSel, |
3450 | SourceLocation GetterNameLoc, |
3451 | Selector SetterSel, |
3452 | SourceLocation SetterNameLoc, |
3453 | const bool isReadWrite, |
3454 | unsigned &Attributes, |
3455 | const unsigned AttributesAsWritten, |
3456 | QualType T, |
3457 | TypeSourceInfo *TSI, |
3458 | tok::ObjCKeywordKind MethodImplKind); |
3459 | |
3460 | /// Called by ActOnProperty and HandlePropertyInClassExtension to |
3461 | /// handle creating the ObjcPropertyDecl for a category or \@interface. |
3462 | ObjCPropertyDecl *CreatePropertyDecl(Scope *S, |
3463 | ObjCContainerDecl *CDecl, |
3464 | SourceLocation AtLoc, |
3465 | SourceLocation LParenLoc, |
3466 | FieldDeclarator &FD, |
3467 | Selector GetterSel, |
3468 | SourceLocation GetterNameLoc, |
3469 | Selector SetterSel, |
3470 | SourceLocation SetterNameLoc, |
3471 | const bool isReadWrite, |
3472 | const unsigned Attributes, |
3473 | const unsigned AttributesAsWritten, |
3474 | QualType T, |
3475 | TypeSourceInfo *TSI, |
3476 | tok::ObjCKeywordKind MethodImplKind, |
3477 | DeclContext *lexicalDC = nullptr); |
3478 | |
3479 | /// AtomicPropertySetterGetterRules - This routine enforces the rule (via |
3480 | /// warning) when atomic property has one but not the other user-declared |
3481 | /// setter or getter. |
3482 | void AtomicPropertySetterGetterRules(ObjCImplDecl* IMPDecl, |
3483 | ObjCInterfaceDecl* IDecl); |
3484 | |
3485 | void DiagnoseOwningPropertyGetterSynthesis(const ObjCImplementationDecl *D); |
3486 | |
3487 | void DiagnoseMissingDesignatedInitOverrides( |
3488 | const ObjCImplementationDecl *ImplD, |
3489 | const ObjCInterfaceDecl *IFD); |
3490 | |
3491 | void DiagnoseDuplicateIvars(ObjCInterfaceDecl *ID, ObjCInterfaceDecl *SID); |
3492 | |
3493 | enum MethodMatchStrategy { |
3494 | MMS_loose, |
3495 | MMS_strict |
3496 | }; |
3497 | |
3498 | /// MatchTwoMethodDeclarations - Checks if two methods' type match and returns |
3499 | /// true, or false, accordingly. |
3500 | bool MatchTwoMethodDeclarations(const ObjCMethodDecl *Method, |
3501 | const ObjCMethodDecl *PrevMethod, |
3502 | MethodMatchStrategy strategy = MMS_strict); |
3503 | |
3504 | /// MatchAllMethodDeclarations - Check methods declaraed in interface or |
3505 | /// or protocol against those declared in their implementations. |
3506 | void MatchAllMethodDeclarations(const SelectorSet &InsMap, |
3507 | const SelectorSet &ClsMap, |
3508 | SelectorSet &InsMapSeen, |
3509 | SelectorSet &ClsMapSeen, |
3510 | ObjCImplDecl* IMPDecl, |
3511 | ObjCContainerDecl* IDecl, |
3512 | bool &IncompleteImpl, |
3513 | bool ImmediateClass, |
3514 | bool WarnCategoryMethodImpl=false); |
3515 | |
3516 | /// CheckCategoryVsClassMethodMatches - Checks that methods implemented in |
3517 | /// category matches with those implemented in its primary class and |
3518 | /// warns each time an exact match is found. |
3519 | void CheckCategoryVsClassMethodMatches(ObjCCategoryImplDecl *CatIMP); |
3520 | |
3521 | /// \brief Add the given method to the list of globally-known methods. |
3522 | void addMethodToGlobalList(ObjCMethodList *List, ObjCMethodDecl *Method); |
3523 | |
3524 | private: |
3525 | /// AddMethodToGlobalPool - Add an instance or factory method to the global |
3526 | /// pool. See descriptoin of AddInstanceMethodToGlobalPool. |
3527 | void AddMethodToGlobalPool(ObjCMethodDecl *Method, bool impl, bool instance); |
3528 | |
3529 | /// LookupMethodInGlobalPool - Returns the instance or factory method and |
3530 | /// optionally warns if there are multiple signatures. |
3531 | ObjCMethodDecl *LookupMethodInGlobalPool(Selector Sel, SourceRange R, |
3532 | bool receiverIdOrClass, |
3533 | bool instance); |
3534 | |
3535 | public: |
3536 | /// \brief - Returns instance or factory methods in global method pool for |
3537 | /// given selector. It checks the desired kind first, if none is found, and |
3538 | /// parameter checkTheOther is set, it then checks the other kind. If no such |
3539 | /// method or only one method is found, function returns false; otherwise, it |
3540 | /// returns true. |
3541 | bool |
3542 | CollectMultipleMethodsInGlobalPool(Selector Sel, |
3543 | SmallVectorImpl<ObjCMethodDecl*>& Methods, |
3544 | bool InstanceFirst, bool CheckTheOther, |
3545 | const ObjCObjectType *TypeBound = nullptr); |
3546 | |
3547 | bool |
3548 | AreMultipleMethodsInGlobalPool(Selector Sel, ObjCMethodDecl *BestMethod, |
3549 | SourceRange R, bool receiverIdOrClass, |
3550 | SmallVectorImpl<ObjCMethodDecl*>& Methods); |
3551 | |
3552 | void |
3553 | DiagnoseMultipleMethodInGlobalPool(SmallVectorImpl<ObjCMethodDecl*> &Methods, |
3554 | Selector Sel, SourceRange R, |
3555 | bool receiverIdOrClass); |
3556 | |
3557 | private: |
3558 | /// \brief - Returns a selector which best matches given argument list or |
3559 | /// nullptr if none could be found |
3560 | ObjCMethodDecl *SelectBestMethod(Selector Sel, MultiExprArg Args, |
3561 | bool IsInstance, |
3562 | SmallVectorImpl<ObjCMethodDecl*>& Methods); |
3563 | |
3564 | |
3565 | /// \brief Record the typo correction failure and return an empty correction. |
3566 | TypoCorrection FailedCorrection(IdentifierInfo *Typo, SourceLocation TypoLoc, |
3567 | bool RecordFailure = true) { |
3568 | if (RecordFailure) |
3569 | TypoCorrectionFailures[Typo].insert(TypoLoc); |
3570 | return TypoCorrection(); |
3571 | } |
3572 | |
3573 | public: |
3574 | /// AddInstanceMethodToGlobalPool - All instance methods in a translation |
3575 | /// unit are added to a global pool. This allows us to efficiently associate |
3576 | /// a selector with a method declaraation for purposes of typechecking |
3577 | /// messages sent to "id" (where the class of the object is unknown). |
3578 | void AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { |
3579 | AddMethodToGlobalPool(Method, impl, /*instance*/true); |
3580 | } |
3581 | |
3582 | /// AddFactoryMethodToGlobalPool - Same as above, but for factory methods. |
3583 | void AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { |
3584 | AddMethodToGlobalPool(Method, impl, /*instance*/false); |
3585 | } |
3586 | |
3587 | /// AddAnyMethodToGlobalPool - Add any method, instance or factory to global |
3588 | /// pool. |
3589 | void AddAnyMethodToGlobalPool(Decl *D); |
3590 | |
3591 | /// LookupInstanceMethodInGlobalPool - Returns the method and warns if |
3592 | /// there are multiple signatures. |
3593 | ObjCMethodDecl *LookupInstanceMethodInGlobalPool(Selector Sel, SourceRange R, |
3594 | bool receiverIdOrClass=false) { |
3595 | return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, |
3596 | /*instance*/true); |
3597 | } |
3598 | |
3599 | /// LookupFactoryMethodInGlobalPool - Returns the method and warns if |
3600 | /// there are multiple signatures. |
3601 | ObjCMethodDecl *LookupFactoryMethodInGlobalPool(Selector Sel, SourceRange R, |
3602 | bool receiverIdOrClass=false) { |
3603 | return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, |
3604 | /*instance*/false); |
3605 | } |
3606 | |
3607 | const ObjCMethodDecl *SelectorsForTypoCorrection(Selector Sel, |
3608 | QualType ObjectType=QualType()); |
3609 | /// LookupImplementedMethodInGlobalPool - Returns the method which has an |
3610 | /// implementation. |
3611 | ObjCMethodDecl *LookupImplementedMethodInGlobalPool(Selector Sel); |
3612 | |
3613 | /// CollectIvarsToConstructOrDestruct - Collect those ivars which require |
3614 | /// initialization. |
3615 | void CollectIvarsToConstructOrDestruct(ObjCInterfaceDecl *OI, |
3616 | SmallVectorImpl<ObjCIvarDecl*> &Ivars); |
3617 | |
3618 | //===--------------------------------------------------------------------===// |
3619 | // Statement Parsing Callbacks: SemaStmt.cpp. |
3620 | public: |
3621 | class FullExprArg { |
3622 | public: |
3623 | FullExprArg() : E(nullptr) { } |
3624 | FullExprArg(Sema &actions) : E(nullptr) { } |
3625 | |
3626 | ExprResult release() { |
3627 | return E; |
3628 | } |
3629 | |
3630 | Expr *get() const { return E; } |
3631 | |
3632 | Expr *operator->() { |
3633 | return E; |
3634 | } |
3635 | |
3636 | private: |
3637 | // FIXME: No need to make the entire Sema class a friend when it's just |
3638 | // Sema::MakeFullExpr that needs access to the constructor below. |
3639 | friend class Sema; |
3640 | |
3641 | explicit FullExprArg(Expr *expr) : E(expr) {} |
3642 | |
3643 | Expr *E; |
3644 | }; |
3645 | |
3646 | FullExprArg MakeFullExpr(Expr *Arg) { |
3647 | return MakeFullExpr(Arg, Arg ? Arg->getExprLoc() : SourceLocation()); |
3648 | } |
3649 | FullExprArg MakeFullExpr(Expr *Arg, SourceLocation CC) { |
3650 | return FullExprArg(ActOnFinishFullExpr(Arg, CC).get()); |
3651 | } |
3652 | FullExprArg MakeFullDiscardedValueExpr(Expr *Arg) { |
3653 | ExprResult FE = |
3654 | ActOnFinishFullExpr(Arg, Arg ? Arg->getExprLoc() : SourceLocation(), |
3655 | /*DiscardedValue*/ true); |
3656 | return FullExprArg(FE.get()); |
3657 | } |
3658 | |
3659 | StmtResult ActOnExprStmt(ExprResult Arg); |
3660 | StmtResult ActOnExprStmtError(); |
3661 | |
3662 | StmtResult ActOnNullStmt(SourceLocation SemiLoc, |
3663 | bool HasLeadingEmptyMacro = false); |
3664 | |
3665 | void ActOnStartOfCompoundStmt(bool IsStmtExpr); |
3666 | void ActOnFinishOfCompoundStmt(); |
3667 | StmtResult ActOnCompoundStmt(SourceLocation L, SourceLocation R, |
3668 | ArrayRef<Stmt *> Elts, bool isStmtExpr); |
3669 | |
3670 | /// \brief A RAII object to enter scope of a compound statement. |
3671 | class CompoundScopeRAII { |
3672 | public: |
3673 | CompoundScopeRAII(Sema &S, bool IsStmtExpr = false) : S(S) { |
3674 | S.ActOnStartOfCompoundStmt(IsStmtExpr); |
3675 | } |
3676 | |
3677 | ~CompoundScopeRAII() { |
3678 | S.ActOnFinishOfCompoundStmt(); |
3679 | } |
3680 | |
3681 | private: |
3682 | Sema &S; |
3683 | }; |
3684 | |
3685 | /// An RAII helper that pops function a function scope on exit. |
3686 | struct FunctionScopeRAII { |
3687 | Sema &S; |
3688 | bool Active; |
3689 | FunctionScopeRAII(Sema &S) : S(S), Active(true) {} |
3690 | ~FunctionScopeRAII() { |
3691 | if (Active) |
3692 | S.PopFunctionScopeInfo(); |
3693 | } |
3694 | void disable() { Active = false; } |
3695 | }; |
3696 | |
3697 | StmtResult ActOnDeclStmt(DeclGroupPtrTy Decl, |
3698 | SourceLocation StartLoc, |
3699 | SourceLocation EndLoc); |
3700 | void ActOnForEachDeclStmt(DeclGroupPtrTy Decl); |
3701 | StmtResult ActOnForEachLValueExpr(Expr *E); |
3702 | StmtResult ActOnCaseStmt(SourceLocation CaseLoc, Expr *LHSVal, |
3703 | SourceLocation DotDotDotLoc, Expr *RHSVal, |
3704 | SourceLocation ColonLoc); |
3705 | void ActOnCaseStmtBody(Stmt *CaseStmt, Stmt *SubStmt); |
3706 | |
3707 | StmtResult ActOnDefaultStmt(SourceLocation DefaultLoc, |
3708 | SourceLocation ColonLoc, |
3709 | Stmt *SubStmt, Scope *CurScope); |
3710 | StmtResult ActOnLabelStmt(SourceLocation IdentLoc, LabelDecl *TheDecl, |
3711 | SourceLocation ColonLoc, Stmt *SubStmt); |
3712 | |
3713 | StmtResult ActOnAttributedStmt(SourceLocation AttrLoc, |
3714 | ArrayRef<const Attr*> Attrs, |
3715 | Stmt *SubStmt); |
3716 | |
3717 | class ConditionResult; |
3718 | StmtResult ActOnIfStmt(SourceLocation IfLoc, bool IsConstexpr, |
3719 | Stmt *InitStmt, |
3720 | ConditionResult Cond, Stmt *ThenVal, |
3721 | SourceLocation ElseLoc, Stmt *ElseVal); |
3722 | StmtResult BuildIfStmt(SourceLocation IfLoc, bool IsConstexpr, |
3723 | Stmt *InitStmt, |
3724 | ConditionResult Cond, Stmt *ThenVal, |
3725 | SourceLocation ElseLoc, Stmt *ElseVal); |
3726 | StmtResult ActOnStartOfSwitchStmt(SourceLocation SwitchLoc, |
3727 | Stmt *InitStmt, |
3728 | ConditionResult Cond); |
3729 | StmtResult ActOnFinishSwitchStmt(SourceLocation SwitchLoc, |
3730 | Stmt *Switch, Stmt *Body); |
3731 | StmtResult ActOnWhileStmt(SourceLocation WhileLoc, ConditionResult Cond, |
3732 | Stmt *Body); |
3733 | StmtResult ActOnDoStmt(SourceLocation DoLoc, Stmt *Body, |
3734 | SourceLocation WhileLoc, SourceLocation CondLParen, |
3735 | Expr *Cond, SourceLocation CondRParen); |
3736 | |
3737 | StmtResult ActOnForStmt(SourceLocation ForLoc, |
3738 | SourceLocation LParenLoc, |
3739 | Stmt *First, |
3740 | ConditionResult Second, |
3741 | FullExprArg Third, |
3742 | SourceLocation RParenLoc, |
3743 | Stmt *Body); |
3744 | ExprResult CheckObjCForCollectionOperand(SourceLocation forLoc, |
3745 | Expr *collection); |
3746 | StmtResult ActOnObjCForCollectionStmt(SourceLocation ForColLoc, |
3747 | Stmt *First, Expr *collection, |
3748 | SourceLocation RParenLoc); |
3749 | StmtResult FinishObjCForCollectionStmt(Stmt *ForCollection, Stmt *Body); |
3750 | |
3751 | enum BuildForRangeKind { |
3752 | /// Initial building of a for-range statement. |
3753 | BFRK_Build, |
3754 | /// Instantiation or recovery rebuild of a for-range statement. Don't |
3755 | /// attempt any typo-correction. |
3756 | BFRK_Rebuild, |
3757 | /// Determining whether a for-range statement could be built. Avoid any |
3758 | /// unnecessary or irreversible actions. |
3759 | BFRK_Check |
3760 | }; |
3761 | |
3762 | StmtResult ActOnCXXForRangeStmt(Scope *S, SourceLocation ForLoc, |
3763 | SourceLocation CoawaitLoc, |
3764 | Stmt *LoopVar, |
3765 | SourceLocation ColonLoc, Expr *Collection, |
3766 | SourceLocation RParenLoc, |
3767 | BuildForRangeKind Kind); |
3768 | StmtResult BuildCXXForRangeStmt(SourceLocation ForLoc, |
3769 | SourceLocation CoawaitLoc, |
3770 | SourceLocation ColonLoc, |
3771 | Stmt *RangeDecl, Stmt *Begin, Stmt *End, |
3772 | Expr *Cond, Expr *Inc, |
3773 | Stmt *LoopVarDecl, |
3774 | SourceLocation RParenLoc, |
3775 | BuildForRangeKind Kind); |
3776 | StmtResult FinishCXXForRangeStmt(Stmt *ForRange, Stmt *Body); |
3777 | |
3778 | StmtResult ActOnGotoStmt(SourceLocation GotoLoc, |
3779 | SourceLocation LabelLoc, |
3780 | LabelDecl *TheDecl); |
3781 | StmtResult ActOnIndirectGotoStmt(SourceLocation GotoLoc, |
3782 | SourceLocation StarLoc, |
3783 | Expr *DestExp); |
3784 | StmtResult ActOnContinueStmt(SourceLocation ContinueLoc, Scope *CurScope); |
3785 | StmtResult ActOnBreakStmt(SourceLocation BreakLoc, Scope *CurScope); |
3786 | |
3787 | void ActOnCapturedRegionStart(SourceLocation Loc, Scope *CurScope, |
3788 | CapturedRegionKind Kind, unsigned NumParams); |
3789 | typedef std::pair<StringRef, QualType> CapturedParamNameType; |
3790 | void ActOnCapturedRegionStart(SourceLocation Loc, Scope *CurScope, |
3791 | CapturedRegionKind Kind, |
3792 | ArrayRef<CapturedParamNameType> Params); |
3793 | StmtResult ActOnCapturedRegionEnd(Stmt *S); |
3794 | void ActOnCapturedRegionError(); |
3795 | RecordDecl *CreateCapturedStmtRecordDecl(CapturedDecl *&CD, |
3796 | SourceLocation Loc, |
3797 | unsigned NumParams); |
3798 | |
3799 | enum CopyElisionSemanticsKind { |
3800 | CES_Strict = 0, |
3801 | CES_AllowParameters = 1, |
3802 | CES_AllowDifferentTypes = 2, |
3803 | CES_Default = (CES_AllowParameters | CES_AllowDifferentTypes), |
3804 | }; |
3805 | |
3806 | VarDecl *getCopyElisionCandidate(QualType ReturnType, Expr *E, |
3807 | CopyElisionSemanticsKind CESK); |
3808 | bool isCopyElisionCandidate(QualType ReturnType, const VarDecl *VD, |
3809 | CopyElisionSemanticsKind CESK); |
3810 | |
3811 | StmtResult ActOnReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp, |
3812 | Scope *CurScope); |
3813 | StmtResult BuildReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); |
3814 | StmtResult ActOnCapScopeReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); |
3815 | |
3816 | StmtResult ActOnGCCAsmStmt(SourceLocation AsmLoc, bool IsSimple, |
3817 | bool IsVolatile, unsigned NumOutputs, |
3818 | unsigned NumInputs, IdentifierInfo **Names, |
3819 | MultiExprArg Constraints, MultiExprArg Exprs, |
3820 | Expr *AsmString, MultiExprArg Clobbers, |
3821 | SourceLocation RParenLoc); |
3822 | |
3823 | void FillInlineAsmIdentifierInfo(Expr *Res, |
3824 | llvm::InlineAsmIdentifierInfo &Info); |
3825 | ExprResult LookupInlineAsmIdentifier(CXXScopeSpec &SS, |
3826 | SourceLocation TemplateKWLoc, |
3827 | UnqualifiedId &Id, |
3828 | bool IsUnevaluatedContext); |
3829 | bool LookupInlineAsmField(StringRef Base, StringRef Member, |
3830 | unsigned &Offset, SourceLocation AsmLoc); |
3831 | ExprResult LookupInlineAsmVarDeclField(Expr *RefExpr, StringRef Member, |
3832 | SourceLocation AsmLoc); |
3833 | StmtResult ActOnMSAsmStmt(SourceLocation AsmLoc, SourceLocation LBraceLoc, |
3834 | ArrayRef<Token> AsmToks, |
3835 | StringRef AsmString, |
3836 | unsigned NumOutputs, unsigned NumInputs, |
3837 | ArrayRef<StringRef> Constraints, |
3838 | ArrayRef<StringRef> Clobbers, |
3839 | ArrayRef<Expr*> Exprs, |
3840 | SourceLocation EndLoc); |
3841 | LabelDecl *GetOrCreateMSAsmLabel(StringRef ExternalLabelName, |
3842 | SourceLocation Location, |
3843 | bool AlwaysCreate); |
3844 | |
3845 | VarDecl *BuildObjCExceptionDecl(TypeSourceInfo *TInfo, QualType ExceptionType, |
3846 | SourceLocation StartLoc, |
3847 | SourceLocation IdLoc, IdentifierInfo *Id, |
3848 | bool Invalid = false); |
3849 | |
3850 | Decl *ActOnObjCExceptionDecl(Scope *S, Declarator &D); |
3851 | |
3852 | StmtResult ActOnObjCAtCatchStmt(SourceLocation AtLoc, SourceLocation RParen, |
3853 | Decl *Parm, Stmt *Body); |
3854 | |
3855 | StmtResult ActOnObjCAtFinallyStmt(SourceLocation AtLoc, Stmt *Body); |
3856 | |
3857 | StmtResult ActOnObjCAtTryStmt(SourceLocation AtLoc, Stmt *Try, |
3858 | MultiStmtArg Catch, Stmt *Finally); |
3859 | |
3860 | StmtResult BuildObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw); |
3861 | StmtResult ActOnObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw, |
3862 | Scope *CurScope); |
3863 | ExprResult ActOnObjCAtSynchronizedOperand(SourceLocation atLoc, |
3864 | Expr *operand); |
3865 | StmtResult ActOnObjCAtSynchronizedStmt(SourceLocation AtLoc, |
3866 | Expr *SynchExpr, |
3867 | Stmt *SynchBody); |
3868 | |
3869 | StmtResult ActOnObjCAutoreleasePoolStmt(SourceLocation AtLoc, Stmt *Body); |
3870 | |
3871 | VarDecl *BuildExceptionDeclaration(Scope *S, TypeSourceInfo *TInfo, |
3872 | SourceLocation StartLoc, |
3873 | SourceLocation IdLoc, |
3874 | IdentifierInfo *Id); |
3875 | |
3876 | Decl *ActOnExceptionDeclarator(Scope *S, Declarator &D); |
3877 | |
3878 | StmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc, |
3879 | Decl *ExDecl, Stmt *HandlerBlock); |
3880 | StmtResult ActOnCXXTryBlock(SourceLocation TryLoc, Stmt *TryBlock, |
3881 | ArrayRef<Stmt *> Handlers); |
3882 | |
3883 | StmtResult ActOnSEHTryBlock(bool IsCXXTry, // try (true) or __try (false) ? |
3884 | SourceLocation TryLoc, Stmt *TryBlock, |
3885 | Stmt *Handler); |
3886 | StmtResult ActOnSEHExceptBlock(SourceLocation Loc, |
3887 | Expr *FilterExpr, |
3888 | Stmt *Block); |
3889 | void ActOnStartSEHFinallyBlock(); |
3890 | void ActOnAbortSEHFinallyBlock(); |
3891 | StmtResult ActOnFinishSEHFinallyBlock(SourceLocation Loc, Stmt *Block); |
3892 | StmtResult ActOnSEHLeaveStmt(SourceLocation Loc, Scope *CurScope); |
3893 | |
3894 | void DiagnoseReturnInConstructorExceptionHandler(CXXTryStmt *TryBlock); |
3895 | |
3896 | bool ShouldWarnIfUnusedFileScopedDecl(const DeclaratorDecl *D) const; |
3897 | |
3898 | /// \brief If it's a file scoped decl that must warn if not used, keep track |
3899 | /// of it. |
3900 | void MarkUnusedFileScopedDecl(const DeclaratorDecl *D); |
3901 | |
3902 | /// DiagnoseUnusedExprResult - If the statement passed in is an expression |
3903 | /// whose result is unused, warn. |
3904 | void DiagnoseUnusedExprResult(const Stmt *S); |
3905 | void DiagnoseUnusedNestedTypedefs(const RecordDecl *D); |
3906 | void DiagnoseUnusedDecl(const NamedDecl *ND); |
3907 | |
3908 | /// Emit \p DiagID if statement located on \p StmtLoc has a suspicious null |
3909 | /// statement as a \p Body, and it is located on the same line. |
3910 | /// |
3911 | /// This helps prevent bugs due to typos, such as: |
3912 | /// if (condition); |
3913 | /// do_stuff(); |
3914 | void DiagnoseEmptyStmtBody(SourceLocation StmtLoc, |
3915 | const Stmt *Body, |
3916 | unsigned DiagID); |
3917 | |
3918 | /// Warn if a for/while loop statement \p S, which is followed by |
3919 | /// \p PossibleBody, has a suspicious null statement as a body. |
3920 | void DiagnoseEmptyLoopBody(const Stmt *S, |
3921 | const Stmt *PossibleBody); |
3922 | |
3923 | /// Warn if a value is moved to itself. |
3924 | void DiagnoseSelfMove(const Expr *LHSExpr, const Expr *RHSExpr, |
3925 | SourceLocation OpLoc); |
3926 | |
3927 | /// \brief Warn if we're implicitly casting from a _Nullable pointer type to a |
3928 | /// _Nonnull one. |
3929 | void diagnoseNullableToNonnullConversion(QualType DstType, QualType SrcType, |
3930 | SourceLocation Loc); |
3931 | |
3932 | /// Warn when implicitly casting 0 to nullptr. |
3933 | void diagnoseZeroToNullptrConversion(CastKind Kind, const Expr *E); |
3934 | |
3935 | ParsingDeclState PushParsingDeclaration(sema::DelayedDiagnosticPool &pool) { |
3936 | return DelayedDiagnostics.push(pool); |
3937 | } |
3938 | void PopParsingDeclaration(ParsingDeclState state, Decl *decl); |
3939 | |
3940 | typedef ProcessingContextState ParsingClassState; |
3941 | ParsingClassState PushParsingClass() { |
3942 | return DelayedDiagnostics.pushUndelayed(); |
3943 | } |
3944 | void PopParsingClass(ParsingClassState state) { |
3945 | DelayedDiagnostics.popUndelayed(state); |
3946 | } |
3947 | |
3948 | void redelayDiagnostics(sema::DelayedDiagnosticPool &pool); |
3949 | |
3950 | void DiagnoseAvailabilityOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, |
3951 | const ObjCInterfaceDecl *UnknownObjCClass, |
3952 | bool ObjCPropertyAccess, |
3953 | bool AvoidPartialAvailabilityChecks = false); |
3954 | |
3955 | bool makeUnavailableInSystemHeader(SourceLocation loc, |
3956 | UnavailableAttr::ImplicitReason reason); |
3957 | |
3958 | /// \brief Issue any -Wunguarded-availability warnings in \c FD |
3959 | void DiagnoseUnguardedAvailabilityViolations(Decl *FD); |
3960 | |
3961 | //===--------------------------------------------------------------------===// |
3962 | // Expression Parsing Callbacks: SemaExpr.cpp. |
3963 | |
3964 | bool CanUseDecl(NamedDecl *D, bool TreatUnavailableAsInvalid); |
3965 | bool DiagnoseUseOfDecl(NamedDecl *D, ArrayRef<SourceLocation> Locs, |
3966 | const ObjCInterfaceDecl *UnknownObjCClass = nullptr, |
3967 | bool ObjCPropertyAccess = false, |
3968 | bool AvoidPartialAvailabilityChecks = false); |
3969 | void NoteDeletedFunction(FunctionDecl *FD); |
3970 | void NoteDeletedInheritingConstructor(CXXConstructorDecl *CD); |
3971 | std::string getDeletedOrUnavailableSuffix(const FunctionDecl *FD); |
3972 | bool DiagnosePropertyAccessorMismatch(ObjCPropertyDecl *PD, |
3973 | ObjCMethodDecl *Getter, |
3974 | SourceLocation Loc); |
3975 | void DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, |
3976 | ArrayRef<Expr *> Args); |
3977 | |
3978 | void PushExpressionEvaluationContext(ExpressionEvaluationContext NewContext, |
3979 | Decl *LambdaContextDecl = nullptr, |
3980 | bool IsDecltype = false); |
3981 | enum ReuseLambdaContextDecl_t { ReuseLambdaContextDecl }; |
3982 | void PushExpressionEvaluationContext(ExpressionEvaluationContext NewContext, |
3983 | ReuseLambdaContextDecl_t, |
3984 | bool IsDecltype = false); |
3985 | void PopExpressionEvaluationContext(); |
3986 | |
3987 | void DiscardCleanupsInEvaluationContext(); |
3988 | |
3989 | ExprResult TransformToPotentiallyEvaluated(Expr *E); |
3990 | ExprResult HandleExprEvaluationContextForTypeof(Expr *E); |
3991 | |
3992 | ExprResult ActOnConstantExpression(ExprResult Res); |
3993 | |
3994 | // Functions for marking a declaration referenced. These functions also |
3995 | // contain the relevant logic for marking if a reference to a function or |
3996 | // variable is an odr-use (in the C++11 sense). There are separate variants |
3997 | // for expressions referring to a decl; these exist because odr-use marking |
3998 | // needs to be delayed for some constant variables when we build one of the |
3999 | // named expressions. |
4000 | // |
4001 | // MightBeOdrUse indicates whether the use could possibly be an odr-use, and |
4002 | // should usually be true. This only needs to be set to false if the lack of |
4003 | // odr-use cannot be determined from the current context (for instance, |
4004 | // because the name denotes a virtual function and was written without an |
4005 | // explicit nested-name-specifier). |
4006 | void MarkAnyDeclReferenced(SourceLocation Loc, Decl *D, bool MightBeOdrUse); |
4007 | void MarkFunctionReferenced(SourceLocation Loc, FunctionDecl *Func, |
4008 | bool MightBeOdrUse = true); |
4009 | void MarkVariableReferenced(SourceLocation Loc, VarDecl *Var); |
4010 | void MarkDeclRefReferenced(DeclRefExpr *E, const Expr *Base = nullptr); |
4011 | void MarkMemberReferenced(MemberExpr *E); |
4012 | |
4013 | void UpdateMarkingForLValueToRValue(Expr *E); |
4014 | void CleanupVarDeclMarking(); |
4015 | |
4016 | enum TryCaptureKind { |
4017 | TryCapture_Implicit, TryCapture_ExplicitByVal, TryCapture_ExplicitByRef |
4018 | }; |
4019 | |
4020 | /// \brief Try to capture the given variable. |
4021 | /// |
4022 | /// \param Var The variable to capture. |
4023 | /// |
4024 | /// \param Loc The location at which the capture occurs. |
4025 | /// |
4026 | /// \param Kind The kind of capture, which may be implicit (for either a |
4027 | /// block or a lambda), or explicit by-value or by-reference (for a lambda). |
4028 | /// |
4029 | /// \param EllipsisLoc The location of the ellipsis, if one is provided in |
4030 | /// an explicit lambda capture. |
4031 | /// |
4032 | /// \param BuildAndDiagnose Whether we are actually supposed to add the |
4033 | /// captures or diagnose errors. If false, this routine merely check whether |
4034 | /// the capture can occur without performing the capture itself or complaining |
4035 | /// if the variable cannot be captured. |
4036 | /// |
4037 | /// \param CaptureType Will be set to the type of the field used to capture |
4038 | /// this variable in the innermost block or lambda. Only valid when the |
4039 | /// variable can be captured. |
4040 | /// |
4041 | /// \param DeclRefType Will be set to the type of a reference to the capture |
4042 | /// from within the current scope. Only valid when the variable can be |
4043 | /// captured. |
4044 | /// |
4045 | /// \param FunctionScopeIndexToStopAt If non-null, it points to the index |
4046 | /// of the FunctionScopeInfo stack beyond which we do not attempt to capture. |
4047 | /// This is useful when enclosing lambdas must speculatively capture |
4048 | /// variables that may or may not be used in certain specializations of |
4049 | /// a nested generic lambda. |
4050 | /// |
4051 | /// \returns true if an error occurred (i.e., the variable cannot be |
4052 | /// captured) and false if the capture succeeded. |
4053 | bool tryCaptureVariable(VarDecl *Var, SourceLocation Loc, TryCaptureKind Kind, |
4054 | SourceLocation EllipsisLoc, bool BuildAndDiagnose, |
4055 | QualType &CaptureType, |
4056 | QualType &DeclRefType, |
4057 | const unsigned *const FunctionScopeIndexToStopAt); |
4058 | |
4059 | /// \brief Try to capture the given variable. |
4060 | bool tryCaptureVariable(VarDecl *Var, SourceLocation Loc, |
4061 | TryCaptureKind Kind = TryCapture_Implicit, |
4062 | SourceLocation EllipsisLoc = SourceLocation()); |
4063 | |
4064 | /// \brief Checks if the variable must be captured. |
4065 | bool NeedToCaptureVariable(VarDecl *Var, SourceLocation Loc); |
4066 | |
4067 | /// \brief Given a variable, determine the type that a reference to that |
4068 | /// variable will have in the given scope. |
4069 | QualType getCapturedDeclRefType(VarDecl *Var, SourceLocation Loc); |
4070 | |
4071 | /// Mark all of the declarations referenced within a particular AST node as |
4072 | /// referenced. Used when template instantiation instantiates a non-dependent |
4073 | /// type -- entities referenced by the type are now referenced. |
4074 | void MarkDeclarationsReferencedInType(SourceLocation Loc, QualType T); |
4075 | void MarkDeclarationsReferencedInExpr(Expr *E, |
4076 | bool SkipLocalVariables = false); |
4077 | |
4078 | /// \brief Try to recover by turning the given expression into a |
4079 | /// call. Returns true if recovery was attempted or an error was |
4080 | /// emitted; this may also leave the ExprResult invalid. |
4081 | bool tryToRecoverWithCall(ExprResult &E, const PartialDiagnostic &PD, |
4082 | bool ForceComplain = false, |
4083 | bool (*IsPlausibleResult)(QualType) = nullptr); |
4084 | |
4085 | /// \brief Figure out if an expression could be turned into a call. |
4086 | bool tryExprAsCall(Expr &E, QualType &ZeroArgCallReturnTy, |
4087 | UnresolvedSetImpl &NonTemplateOverloads); |
4088 | |
4089 | /// \brief Conditionally issue a diagnostic based on the current |
4090 | /// evaluation context. |
4091 | /// |
4092 | /// \param Statement If Statement is non-null, delay reporting the |
4093 | /// diagnostic until the function body is parsed, and then do a basic |
4094 | /// reachability analysis to determine if the statement is reachable. |
4095 | /// If it is unreachable, the diagnostic will not be emitted. |
4096 | bool DiagRuntimeBehavior(SourceLocation Loc, const Stmt *Statement, |
4097 | const PartialDiagnostic &PD); |
4098 | |
4099 | // Primary Expressions. |
4100 | SourceRange getExprRange(Expr *E) const; |
4101 | |
4102 | ExprResult ActOnIdExpression( |
4103 | Scope *S, CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
4104 | UnqualifiedId &Id, bool HasTrailingLParen, bool IsAddressOfOperand, |
4105 | std::unique_ptr<CorrectionCandidateCallback> CCC = nullptr, |
4106 | bool IsInlineAsmIdentifier = false, Token *KeywordReplacement = nullptr); |
4107 | |
4108 | void DecomposeUnqualifiedId(const UnqualifiedId &Id, |
4109 | TemplateArgumentListInfo &Buffer, |
4110 | DeclarationNameInfo &NameInfo, |
4111 | const TemplateArgumentListInfo *&TemplateArgs); |
4112 | |
4113 | bool |
4114 | DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, |
4115 | std::unique_ptr<CorrectionCandidateCallback> CCC, |
4116 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr, |
4117 | ArrayRef<Expr *> Args = None, TypoExpr **Out = nullptr); |
4118 | |
4119 | ExprResult LookupInObjCMethod(LookupResult &LookUp, Scope *S, |
4120 | IdentifierInfo *II, |
4121 | bool AllowBuiltinCreation=false); |
4122 | |
4123 | ExprResult ActOnDependentIdExpression(const CXXScopeSpec &SS, |
4124 | SourceLocation TemplateKWLoc, |
4125 | const DeclarationNameInfo &NameInfo, |
4126 | bool isAddressOfOperand, |
4127 | const TemplateArgumentListInfo *TemplateArgs); |
4128 | |
4129 | ExprResult BuildDeclRefExpr(ValueDecl *D, QualType Ty, |
4130 | ExprValueKind VK, |
4131 | SourceLocation Loc, |
4132 | const CXXScopeSpec *SS = nullptr); |
4133 | ExprResult |
4134 | BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, |
4135 | const DeclarationNameInfo &NameInfo, |
4136 | const CXXScopeSpec *SS = nullptr, |
4137 | NamedDecl *FoundD = nullptr, |
4138 | const TemplateArgumentListInfo *TemplateArgs = nullptr); |
4139 | ExprResult |
4140 | BuildAnonymousStructUnionMemberReference( |
4141 | const CXXScopeSpec &SS, |
4142 | SourceLocation nameLoc, |
4143 | IndirectFieldDecl *indirectField, |
4144 | DeclAccessPair FoundDecl = DeclAccessPair::make(nullptr, AS_none), |
4145 | Expr *baseObjectExpr = nullptr, |
4146 | SourceLocation opLoc = SourceLocation()); |
4147 | |
4148 | ExprResult BuildPossibleImplicitMemberExpr(const CXXScopeSpec &SS, |
4149 | SourceLocation TemplateKWLoc, |
4150 | LookupResult &R, |
4151 | const TemplateArgumentListInfo *TemplateArgs, |
4152 | const Scope *S); |
4153 | ExprResult BuildImplicitMemberExpr(const CXXScopeSpec &SS, |
4154 | SourceLocation TemplateKWLoc, |
4155 | LookupResult &R, |
4156 | const TemplateArgumentListInfo *TemplateArgs, |
4157 | bool IsDefiniteInstance, |
4158 | const Scope *S); |
4159 | bool UseArgumentDependentLookup(const CXXScopeSpec &SS, |
4160 | const LookupResult &R, |
4161 | bool HasTrailingLParen); |
4162 | |
4163 | ExprResult |
4164 | BuildQualifiedDeclarationNameExpr(CXXScopeSpec &SS, |
4165 | const DeclarationNameInfo &NameInfo, |
4166 | bool IsAddressOfOperand, const Scope *S, |
4167 | TypeSourceInfo **RecoveryTSI = nullptr); |
4168 | |
4169 | ExprResult BuildDependentDeclRefExpr(const CXXScopeSpec &SS, |
4170 | SourceLocation TemplateKWLoc, |
4171 | const DeclarationNameInfo &NameInfo, |
4172 | const TemplateArgumentListInfo *TemplateArgs); |
4173 | |
4174 | ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS, |
4175 | LookupResult &R, |
4176 | bool NeedsADL, |
4177 | bool AcceptInvalidDecl = false); |
4178 | ExprResult BuildDeclarationNameExpr( |
4179 | const CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, NamedDecl *D, |
4180 | NamedDecl *FoundD = nullptr, |
4181 | const TemplateArgumentListInfo *TemplateArgs = nullptr, |
4182 | bool AcceptInvalidDecl = false); |
4183 | |
4184 | ExprResult BuildLiteralOperatorCall(LookupResult &R, |
4185 | DeclarationNameInfo &SuffixInfo, |
4186 | ArrayRef<Expr *> Args, |
4187 | SourceLocation LitEndLoc, |
4188 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr); |
4189 | |
4190 | ExprResult BuildPredefinedExpr(SourceLocation Loc, |
4191 | PredefinedExpr::IdentType IT); |
4192 | ExprResult ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind); |
4193 | ExprResult ActOnIntegerConstant(SourceLocation Loc, uint64_t Val); |
4194 | |
4195 | bool CheckLoopHintExpr(Expr *E, SourceLocation Loc); |
4196 | |
4197 | ExprResult ActOnNumericConstant(const Token &Tok, Scope *UDLScope = nullptr); |
4198 | ExprResult ActOnCharacterConstant(const Token &Tok, |
4199 | Scope *UDLScope = nullptr); |
4200 | ExprResult ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *E); |
4201 | ExprResult ActOnParenListExpr(SourceLocation L, |
4202 | SourceLocation R, |
4203 | MultiExprArg Val); |
4204 | |
4205 | /// ActOnStringLiteral - The specified tokens were lexed as pasted string |
4206 | /// fragments (e.g. "foo" "bar" L"baz"). |
4207 | ExprResult ActOnStringLiteral(ArrayRef<Token> StringToks, |
4208 | Scope *UDLScope = nullptr); |
4209 | |
4210 | ExprResult ActOnGenericSelectionExpr(SourceLocation KeyLoc, |
4211 | SourceLocation DefaultLoc, |
4212 | SourceLocation RParenLoc, |
4213 | Expr *ControllingExpr, |
4214 | ArrayRef<ParsedType> ArgTypes, |
4215 | ArrayRef<Expr *> ArgExprs); |
4216 | ExprResult CreateGenericSelectionExpr(SourceLocation KeyLoc, |
4217 | SourceLocation DefaultLoc, |
4218 | SourceLocation RParenLoc, |
4219 | Expr *ControllingExpr, |
4220 | ArrayRef<TypeSourceInfo *> Types, |
4221 | ArrayRef<Expr *> Exprs); |
4222 | |
4223 | // Binary/Unary Operators. 'Tok' is the token for the operator. |
4224 | ExprResult CreateBuiltinUnaryOp(SourceLocation OpLoc, UnaryOperatorKind Opc, |
4225 | Expr *InputExpr); |
4226 | ExprResult BuildUnaryOp(Scope *S, SourceLocation OpLoc, |
4227 | UnaryOperatorKind Opc, Expr *Input); |
4228 | ExprResult ActOnUnaryOp(Scope *S, SourceLocation OpLoc, |
4229 | tok::TokenKind Op, Expr *Input); |
4230 | |
4231 | QualType CheckAddressOfOperand(ExprResult &Operand, SourceLocation OpLoc); |
4232 | |
4233 | ExprResult CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo, |
4234 | SourceLocation OpLoc, |
4235 | UnaryExprOrTypeTrait ExprKind, |
4236 | SourceRange R); |
4237 | ExprResult CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, |
4238 | UnaryExprOrTypeTrait ExprKind); |
4239 | ExprResult |
4240 | ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, |
4241 | UnaryExprOrTypeTrait ExprKind, |
4242 | bool IsType, void *TyOrEx, |
4243 | SourceRange ArgRange); |
4244 | |
4245 | ExprResult CheckPlaceholderExpr(Expr *E); |
4246 | bool CheckVecStepExpr(Expr *E); |
4247 | |
4248 | bool CheckUnaryExprOrTypeTraitOperand(Expr *E, UnaryExprOrTypeTrait ExprKind); |
4249 | bool CheckUnaryExprOrTypeTraitOperand(QualType ExprType, SourceLocation OpLoc, |
4250 | SourceRange ExprRange, |
4251 | UnaryExprOrTypeTrait ExprKind); |
4252 | ExprResult ActOnSizeofParameterPackExpr(Scope *S, |
4253 | SourceLocation OpLoc, |
4254 | IdentifierInfo &Name, |
4255 | SourceLocation NameLoc, |
4256 | SourceLocation RParenLoc); |
4257 | ExprResult ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, |
4258 | tok::TokenKind Kind, Expr *Input); |
4259 | |
4260 | ExprResult ActOnArraySubscriptExpr(Scope *S, Expr *Base, SourceLocation LLoc, |
4261 | Expr *Idx, SourceLocation RLoc); |
4262 | ExprResult CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, |
4263 | Expr *Idx, SourceLocation RLoc); |
4264 | ExprResult ActOnOMPArraySectionExpr(Expr *Base, SourceLocation LBLoc, |
4265 | Expr *LowerBound, SourceLocation ColonLoc, |
4266 | Expr *Length, SourceLocation RBLoc); |
4267 | |
4268 | // This struct is for use by ActOnMemberAccess to allow |
4269 | // BuildMemberReferenceExpr to be able to reinvoke ActOnMemberAccess after |
4270 | // changing the access operator from a '.' to a '->' (to see if that is the |
4271 | // change needed to fix an error about an unknown member, e.g. when the class |
4272 | // defines a custom operator->). |
4273 | struct ActOnMemberAccessExtraArgs { |
4274 | Scope *S; |
4275 | UnqualifiedId &Id; |
4276 | Decl *ObjCImpDecl; |
4277 | }; |
4278 | |
4279 | ExprResult BuildMemberReferenceExpr( |
4280 | Expr *Base, QualType BaseType, SourceLocation OpLoc, bool IsArrow, |
4281 | CXXScopeSpec &SS, SourceLocation TemplateKWLoc, |
4282 | NamedDecl *FirstQualifierInScope, const DeclarationNameInfo &NameInfo, |
4283 | const TemplateArgumentListInfo *TemplateArgs, |
4284 | const Scope *S, |
4285 | ActOnMemberAccessExtraArgs *ExtraArgs = nullptr); |
4286 | |
4287 | ExprResult |
4288 | BuildMemberReferenceExpr(Expr *Base, QualType BaseType, SourceLocation OpLoc, |
4289 | bool IsArrow, const CXXScopeSpec &SS, |
4290 | SourceLocation TemplateKWLoc, |
4291 | NamedDecl *FirstQualifierInScope, LookupResult &R, |
4292 | const TemplateArgumentListInfo *TemplateArgs, |
4293 | const Scope *S, |
4294 | bool SuppressQualifierCheck = false, |
4295 | ActOnMemberAccessExtraArgs *ExtraArgs = nullptr); |
4296 | |
4297 | ExprResult BuildFieldReferenceExpr(Expr *BaseExpr, bool IsArrow, |
4298 | SourceLocation OpLoc, |
4299 | const CXXScopeSpec &SS, FieldDecl *Field, |
4300 | DeclAccessPair FoundDecl, |
4301 | const DeclarationNameInfo &MemberNameInfo); |
4302 | |
4303 | ExprResult PerformMemberExprBaseConversion(Expr *Base, bool IsArrow); |
4304 | |
4305 | bool CheckQualifiedMemberReference(Expr *BaseExpr, QualType BaseType, |
4306 | const CXXScopeSpec &SS, |
4307 | const LookupResult &R); |
4308 | |
4309 | ExprResult ActOnDependentMemberExpr(Expr *Base, QualType BaseType, |
4310 | bool IsArrow, SourceLocation OpLoc, |
4311 | const CXXScopeSpec &SS, |
4312 | SourceLocation TemplateKWLoc, |
4313 | NamedDecl *FirstQualifierInScope, |
4314 | const DeclarationNameInfo &NameInfo, |
4315 | const TemplateArgumentListInfo *TemplateArgs); |
4316 | |
4317 | ExprResult ActOnMemberAccessExpr(Scope *S, Expr *Base, |
4318 | SourceLocation OpLoc, |
4319 | tok::TokenKind OpKind, |
4320 | CXXScopeSpec &SS, |
4321 | SourceLocation TemplateKWLoc, |
4322 | UnqualifiedId &Member, |
4323 | Decl *ObjCImpDecl); |
4324 | |
4325 | void ActOnDefaultCtorInitializers(Decl *CDtorDecl); |
4326 | bool ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, |
4327 | FunctionDecl *FDecl, |
4328 | const FunctionProtoType *Proto, |
4329 | ArrayRef<Expr *> Args, |
4330 | SourceLocation RParenLoc, |
4331 | bool ExecConfig = false); |
4332 | void CheckStaticArrayArgument(SourceLocation CallLoc, |
4333 | ParmVarDecl *Param, |
4334 | const Expr *ArgExpr); |
4335 | |
4336 | /// ActOnCallExpr - Handle a call to Fn with the specified array of arguments. |
4337 | /// This provides the location of the left/right parens and a list of comma |
4338 | /// locations. |
4339 | ExprResult ActOnCallExpr(Scope *S, Expr *Fn, SourceLocation LParenLoc, |
4340 | MultiExprArg ArgExprs, SourceLocation RParenLoc, |
4341 | Expr *ExecConfig = nullptr, |
4342 | bool IsExecConfig = false); |
4343 | ExprResult BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, |
4344 | SourceLocation LParenLoc, |
4345 | ArrayRef<Expr *> Arg, |
4346 | SourceLocation RParenLoc, |
4347 | Expr *Config = nullptr, |
4348 | bool IsExecConfig = false); |
4349 | |
4350 | ExprResult ActOnCUDAExecConfigExpr(Scope *S, SourceLocation LLLLoc, |
4351 | MultiExprArg ExecConfig, |
4352 | SourceLocation GGGLoc); |
4353 | |
4354 | ExprResult ActOnCastExpr(Scope *S, SourceLocation LParenLoc, |
4355 | Declarator &D, ParsedType &Ty, |
4356 | SourceLocation RParenLoc, Expr *CastExpr); |
4357 | ExprResult BuildCStyleCastExpr(SourceLocation LParenLoc, |
4358 | TypeSourceInfo *Ty, |
4359 | SourceLocation RParenLoc, |
4360 | Expr *Op); |
4361 | CastKind PrepareScalarCast(ExprResult &src, QualType destType); |
4362 | |
4363 | /// \brief Build an altivec or OpenCL literal. |
4364 | ExprResult BuildVectorLiteral(SourceLocation LParenLoc, |
4365 | SourceLocation RParenLoc, Expr *E, |
4366 | TypeSourceInfo *TInfo); |
4367 | |
4368 | ExprResult MaybeConvertParenListExprToParenExpr(Scope *S, Expr *ME); |
4369 | |
4370 | ExprResult ActOnCompoundLiteral(SourceLocation LParenLoc, |
4371 | ParsedType Ty, |
4372 | SourceLocation RParenLoc, |
4373 | Expr *InitExpr); |
4374 | |
4375 | ExprResult BuildCompoundLiteralExpr(SourceLocation LParenLoc, |
4376 | TypeSourceInfo *TInfo, |
4377 | SourceLocation RParenLoc, |
4378 | Expr *LiteralExpr); |
4379 | |
4380 | ExprResult ActOnInitList(SourceLocation LBraceLoc, |
4381 | MultiExprArg InitArgList, |
4382 | SourceLocation RBraceLoc); |
4383 | |
4384 | ExprResult ActOnDesignatedInitializer(Designation &Desig, |
4385 | SourceLocation Loc, |
4386 | bool GNUSyntax, |
4387 | ExprResult Init); |
4388 | |
4389 | private: |
4390 | static BinaryOperatorKind ConvertTokenKindToBinaryOpcode(tok::TokenKind Kind); |
4391 | |
4392 | public: |
4393 | ExprResult ActOnBinOp(Scope *S, SourceLocation TokLoc, |
4394 | tok::TokenKind Kind, Expr *LHSExpr, Expr *RHSExpr); |
4395 | ExprResult BuildBinOp(Scope *S, SourceLocation OpLoc, |
4396 | BinaryOperatorKind Opc, Expr *LHSExpr, Expr *RHSExpr); |
4397 | ExprResult CreateBuiltinBinOp(SourceLocation OpLoc, BinaryOperatorKind Opc, |
4398 | Expr *LHSExpr, Expr *RHSExpr); |
4399 | |
4400 | void DiagnoseCommaOperator(const Expr *LHS, SourceLocation Loc); |
4401 | |
4402 | /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null |
4403 | /// in the case of a the GNU conditional expr extension. |
4404 | ExprResult ActOnConditionalOp(SourceLocation QuestionLoc, |
4405 | SourceLocation ColonLoc, |
4406 | Expr *CondExpr, Expr *LHSExpr, Expr *RHSExpr); |
4407 | |
4408 | /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". |
4409 | ExprResult ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, |
4410 | LabelDecl *TheDecl); |
4411 | |
4412 | void ActOnStartStmtExpr(); |
4413 | ExprResult ActOnStmtExpr(SourceLocation LPLoc, Stmt *SubStmt, |
4414 | SourceLocation RPLoc); // "({..})" |
4415 | void ActOnStmtExprError(); |
4416 | |
4417 | // __builtin_offsetof(type, identifier(.identifier|[expr])*) |
4418 | struct OffsetOfComponent { |
4419 | SourceLocation LocStart, LocEnd; |
4420 | bool isBrackets; // true if [expr], false if .ident |
4421 | union { |
4422 | IdentifierInfo *IdentInfo; |
4423 | Expr *E; |
4424 | } U; |
4425 | }; |
4426 | |
4427 | /// __builtin_offsetof(type, a.b[123][456].c) |
4428 | ExprResult BuildBuiltinOffsetOf(SourceLocation BuiltinLoc, |
4429 | TypeSourceInfo *TInfo, |
4430 | ArrayRef<OffsetOfComponent> Components, |
4431 | SourceLocation RParenLoc); |
4432 | ExprResult ActOnBuiltinOffsetOf(Scope *S, |
4433 | SourceLocation BuiltinLoc, |
4434 | SourceLocation TypeLoc, |
4435 | ParsedType ParsedArgTy, |
4436 | ArrayRef<OffsetOfComponent> Components, |
4437 | SourceLocation RParenLoc); |
4438 | |
4439 | // __builtin_choose_expr(constExpr, expr1, expr2) |
4440 | ExprResult ActOnChooseExpr(SourceLocation BuiltinLoc, |
4441 | Expr *CondExpr, Expr *LHSExpr, |
4442 | Expr *RHSExpr, SourceLocation RPLoc); |
4443 | |
4444 | // __builtin_va_arg(expr, type) |
4445 | ExprResult ActOnVAArg(SourceLocation BuiltinLoc, Expr *E, ParsedType Ty, |
4446 | SourceLocation RPLoc); |
4447 | ExprResult BuildVAArgExpr(SourceLocation BuiltinLoc, Expr *E, |
4448 | TypeSourceInfo *TInfo, SourceLocation RPLoc); |
4449 | |
4450 | // __null |
4451 | ExprResult ActOnGNUNullExpr(SourceLocation TokenLoc); |
4452 | |
4453 | bool CheckCaseExpression(Expr *E); |
4454 | |
4455 | /// \brief Describes the result of an "if-exists" condition check. |
4456 | enum IfExistsResult { |
4457 | /// \brief The symbol exists. |
4458 | IER_Exists, |
4459 | |
4460 | /// \brief The symbol does not exist. |
4461 | IER_DoesNotExist, |
4462 | |
4463 | /// \brief The name is a dependent name, so the results will differ |
4464 | /// from one instantiation to the next. |
4465 | IER_Dependent, |
4466 | |
4467 | /// \brief An error occurred. |
4468 | IER_Error |
4469 | }; |
4470 | |
4471 | IfExistsResult |
4472 | CheckMicrosoftIfExistsSymbol(Scope *S, CXXScopeSpec &SS, |
4473 | const DeclarationNameInfo &TargetNameInfo); |
4474 | |
4475 | IfExistsResult |
4476 | CheckMicrosoftIfExistsSymbol(Scope *S, SourceLocation KeywordLoc, |
4477 | bool IsIfExists, CXXScopeSpec &SS, |
4478 | UnqualifiedId &Name); |
4479 | |
4480 | StmtResult BuildMSDependentExistsStmt(SourceLocation KeywordLoc, |
4481 | bool IsIfExists, |
4482 | NestedNameSpecifierLoc QualifierLoc, |
4483 | DeclarationNameInfo NameInfo, |
4484 | Stmt *Nested); |
4485 | StmtResult ActOnMSDependentExistsStmt(SourceLocation KeywordLoc, |
4486 | bool IsIfExists, |
4487 | CXXScopeSpec &SS, UnqualifiedId &Name, |
4488 | Stmt *Nested); |
4489 | |
4490 | //===------------------------- "Block" Extension ------------------------===// |
4491 | |
4492 | /// ActOnBlockStart - This callback is invoked when a block literal is |
4493 | /// started. |
4494 | void ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope); |
4495 | |
4496 | /// ActOnBlockArguments - This callback allows processing of block arguments. |
4497 | /// If there are no arguments, this is still invoked. |
4498 | void ActOnBlockArguments(SourceLocation CaretLoc, Declarator &ParamInfo, |
4499 | Scope *CurScope); |
4500 | |
4501 | /// ActOnBlockError - If there is an error parsing a block, this callback |
4502 | /// is invoked to pop the information about the block from the action impl. |
4503 | void ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope); |
4504 | |
4505 | /// ActOnBlockStmtExpr - This is called when the body of a block statement |
4506 | /// literal was successfully completed. ^(int x){...} |
4507 | ExprResult ActOnBlockStmtExpr(SourceLocation CaretLoc, Stmt *Body, |
4508 | Scope *CurScope); |
4509 | |
4510 | //===---------------------------- Clang Extensions ----------------------===// |
4511 | |
4512 | /// __builtin_convertvector(...) |
4513 | ExprResult ActOnConvertVectorExpr(Expr *E, ParsedType ParsedDestTy, |
4514 | SourceLocation BuiltinLoc, |
4515 | SourceLocation RParenLoc); |
4516 | |
4517 | //===---------------------------- OpenCL Features -----------------------===// |
4518 | |
4519 | /// __builtin_astype(...) |
4520 | ExprResult ActOnAsTypeExpr(Expr *E, ParsedType ParsedDestTy, |
4521 | SourceLocation BuiltinLoc, |
4522 | SourceLocation RParenLoc); |
4523 | |
4524 | //===---------------------------- C++ Features --------------------------===// |
4525 | |
4526 | // Act on C++ namespaces |
4527 | Decl *ActOnStartNamespaceDef(Scope *S, SourceLocation InlineLoc, |
4528 | SourceLocation NamespaceLoc, |
4529 | SourceLocation IdentLoc, |
4530 | IdentifierInfo *Ident, |
4531 | SourceLocation LBrace, |
4532 | AttributeList *AttrList, |
4533 | UsingDirectiveDecl * &UsingDecl); |
4534 | void ActOnFinishNamespaceDef(Decl *Dcl, SourceLocation RBrace); |
4535 | |
4536 | NamespaceDecl *getStdNamespace() const; |
4537 | NamespaceDecl *getOrCreateStdNamespace(); |
4538 | |
4539 | NamespaceDecl *lookupStdExperimentalNamespace(); |
4540 | |
4541 | CXXRecordDecl *getStdBadAlloc() const; |
4542 | EnumDecl *getStdAlignValT() const; |
4543 | |
4544 | /// \brief Tests whether Ty is an instance of std::initializer_list and, if |
4545 | /// it is and Element is not NULL, assigns the element type to Element. |
4546 | bool isStdInitializerList(QualType Ty, QualType *Element); |
4547 | |
4548 | /// \brief Looks for the std::initializer_list template and instantiates it |
4549 | /// with Element, or emits an error if it's not found. |
4550 | /// |
4551 | /// \returns The instantiated template, or null on error. |
4552 | QualType BuildStdInitializerList(QualType Element, SourceLocation Loc); |
4553 | |
4554 | /// \brief Determine whether Ctor is an initializer-list constructor, as |
4555 | /// defined in [dcl.init.list]p2. |
4556 | bool isInitListConstructor(const FunctionDecl *Ctor); |
4557 | |
4558 | Decl *ActOnUsingDirective(Scope *CurScope, |
4559 | SourceLocation UsingLoc, |
4560 | SourceLocation NamespcLoc, |
4561 | CXXScopeSpec &SS, |
4562 | SourceLocation IdentLoc, |
4563 | IdentifierInfo *NamespcName, |
4564 | AttributeList *AttrList); |
4565 | |
4566 | void PushUsingDirective(Scope *S, UsingDirectiveDecl *UDir); |
4567 | |
4568 | Decl *ActOnNamespaceAliasDef(Scope *CurScope, |
4569 | SourceLocation NamespaceLoc, |
4570 | SourceLocation AliasLoc, |
4571 | IdentifierInfo *Alias, |
4572 | CXXScopeSpec &SS, |
4573 | SourceLocation IdentLoc, |
4574 | IdentifierInfo *Ident); |
4575 | |
4576 | void HideUsingShadowDecl(Scope *S, UsingShadowDecl *Shadow); |
4577 | bool CheckUsingShadowDecl(UsingDecl *UD, NamedDecl *Target, |
4578 | const LookupResult &PreviousDecls, |
4579 | UsingShadowDecl *&PrevShadow); |
4580 | UsingShadowDecl *BuildUsingShadowDecl(Scope *S, UsingDecl *UD, |
4581 | NamedDecl *Target, |
4582 | UsingShadowDecl *PrevDecl); |
4583 | |
4584 | bool CheckUsingDeclRedeclaration(SourceLocation UsingLoc, |
4585 | bool HasTypenameKeyword, |
4586 | const CXXScopeSpec &SS, |
4587 | SourceLocation NameLoc, |
4588 | const LookupResult &Previous); |
4589 | bool CheckUsingDeclQualifier(SourceLocation UsingLoc, |
4590 | bool HasTypename, |
4591 | const CXXScopeSpec &SS, |
4592 | const DeclarationNameInfo &NameInfo, |
4593 | SourceLocation NameLoc); |
4594 | |
4595 | NamedDecl *BuildUsingDeclaration(Scope *S, AccessSpecifier AS, |
4596 | SourceLocation UsingLoc, |
4597 | bool HasTypenameKeyword, |
4598 | SourceLocation TypenameLoc, |
4599 | CXXScopeSpec &SS, |
4600 | DeclarationNameInfo NameInfo, |
4601 | SourceLocation EllipsisLoc, |
4602 | AttributeList *AttrList, |
4603 | bool IsInstantiation); |
4604 | NamedDecl *BuildUsingPackDecl(NamedDecl *InstantiatedFrom, |
4605 | ArrayRef<NamedDecl *> Expansions); |
4606 | |
4607 | bool CheckInheritingConstructorUsingDecl(UsingDecl *UD); |
4608 | |
4609 | /// Given a derived-class using shadow declaration for a constructor and the |
4610 | /// correspnding base class constructor, find or create the implicit |
4611 | /// synthesized derived class constructor to use for this initialization. |
4612 | CXXConstructorDecl * |
4613 | findInheritingConstructor(SourceLocation Loc, CXXConstructorDecl *BaseCtor, |
4614 | ConstructorUsingShadowDecl *DerivedShadow); |
4615 | |
4616 | Decl *ActOnUsingDeclaration(Scope *CurScope, |
4617 | AccessSpecifier AS, |
4618 | SourceLocation UsingLoc, |
4619 | SourceLocation TypenameLoc, |
4620 | CXXScopeSpec &SS, |
4621 | UnqualifiedId &Name, |
4622 | SourceLocation EllipsisLoc, |
4623 | AttributeList *AttrList); |
4624 | Decl *ActOnAliasDeclaration(Scope *CurScope, |
4625 | AccessSpecifier AS, |
4626 | MultiTemplateParamsArg TemplateParams, |
4627 | SourceLocation UsingLoc, |
4628 | UnqualifiedId &Name, |
4629 | AttributeList *AttrList, |
4630 | TypeResult Type, |
4631 | Decl *DeclFromDeclSpec); |
4632 | |
4633 | /// BuildCXXConstructExpr - Creates a complete call to a constructor, |
4634 | /// including handling of its default argument expressions. |
4635 | /// |
4636 | /// \param ConstructKind - a CXXConstructExpr::ConstructionKind |
4637 | ExprResult |
4638 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
4639 | NamedDecl *FoundDecl, |
4640 | CXXConstructorDecl *Constructor, MultiExprArg Exprs, |
4641 | bool HadMultipleCandidates, bool IsListInitialization, |
4642 | bool IsStdInitListInitialization, |
4643 | bool RequiresZeroInit, unsigned ConstructKind, |
4644 | SourceRange ParenRange); |
4645 | |
4646 | /// Build a CXXConstructExpr whose constructor has already been resolved if |
4647 | /// it denotes an inherited constructor. |
4648 | ExprResult |
4649 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
4650 | CXXConstructorDecl *Constructor, bool Elidable, |
4651 | MultiExprArg Exprs, |
4652 | bool HadMultipleCandidates, bool IsListInitialization, |
4653 | bool IsStdInitListInitialization, |
4654 | bool RequiresZeroInit, unsigned ConstructKind, |
4655 | SourceRange ParenRange); |
4656 | |
4657 | // FIXME: Can we remove this and have the above BuildCXXConstructExpr check if |
4658 | // the constructor can be elidable? |
4659 | ExprResult |
4660 | BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, |
4661 | NamedDecl *FoundDecl, |
4662 | CXXConstructorDecl *Constructor, bool Elidable, |
4663 | MultiExprArg Exprs, bool HadMultipleCandidates, |
4664 | bool IsListInitialization, |
4665 | bool IsStdInitListInitialization, bool RequiresZeroInit, |
4666 | unsigned ConstructKind, SourceRange ParenRange); |
4667 | |
4668 | ExprResult BuildCXXDefaultInitExpr(SourceLocation Loc, FieldDecl *Field); |
4669 | |
4670 | |
4671 | /// Instantiate or parse a C++ default argument expression as necessary. |
4672 | /// Return true on error. |
4673 | bool CheckCXXDefaultArgExpr(SourceLocation CallLoc, FunctionDecl *FD, |
4674 | ParmVarDecl *Param); |
4675 | |
4676 | /// BuildCXXDefaultArgExpr - Creates a CXXDefaultArgExpr, instantiating |
4677 | /// the default expr if needed. |
4678 | ExprResult BuildCXXDefaultArgExpr(SourceLocation CallLoc, |
4679 | FunctionDecl *FD, |
4680 | ParmVarDecl *Param); |
4681 | |
4682 | /// FinalizeVarWithDestructor - Prepare for calling destructor on the |
4683 | /// constructed variable. |
4684 | void FinalizeVarWithDestructor(VarDecl *VD, const RecordType *DeclInitType); |
4685 | |
4686 | /// \brief Helper class that collects exception specifications for |
4687 | /// implicitly-declared special member functions. |
4688 | class ImplicitExceptionSpecification { |
4689 | // Pointer to allow copying |
4690 | Sema *Self; |
4691 | // We order exception specifications thus: |
4692 | // noexcept is the most restrictive, but is only used in C++11. |
4693 | // throw() comes next. |
4694 | // Then a throw(collected exceptions) |
4695 | // Finally no specification, which is expressed as noexcept(false). |
4696 | // throw(...) is used instead if any called function uses it. |
4697 | ExceptionSpecificationType ComputedEST; |
4698 | llvm::SmallPtrSet<CanQualType, 4> ExceptionsSeen; |
4699 | SmallVector<QualType, 4> Exceptions; |
4700 | |
4701 | void ClearExceptions() { |
4702 | ExceptionsSeen.clear(); |
4703 | Exceptions.clear(); |
4704 | } |
4705 | |
4706 | public: |
4707 | explicit ImplicitExceptionSpecification(Sema &Self) |
4708 | : Self(&Self), ComputedEST(EST_BasicNoexcept) { |
4709 | if (!Self.getLangOpts().CPlusPlus11) |
4710 | ComputedEST = EST_DynamicNone; |
4711 | } |
4712 | |
4713 | /// \brief Get the computed exception specification type. |
4714 | ExceptionSpecificationType getExceptionSpecType() const { |
4715 | assert(ComputedEST != EST_ComputedNoexcept &&(static_cast <bool> (ComputedEST != EST_ComputedNoexcept && "noexcept(expr) should not be a possible result") ? void (0) : __assert_fail ("ComputedEST != EST_ComputedNoexcept && \"noexcept(expr) should not be a possible result\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 4716, __extension__ __PRETTY_FUNCTION__)) |
4716 | "noexcept(expr) should not be a possible result")(static_cast <bool> (ComputedEST != EST_ComputedNoexcept && "noexcept(expr) should not be a possible result") ? void (0) : __assert_fail ("ComputedEST != EST_ComputedNoexcept && \"noexcept(expr) should not be a possible result\"" , "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include/clang/Sema/Sema.h" , 4716, __extension__ __PRETTY_FUNCTION__)); |
4717 | return ComputedEST; |
4718 | } |
4719 | |
4720 | /// \brief The number of exceptions in the exception specification. |
4721 | unsigned size() const { return Exceptions.size(); } |
4722 | |
4723 | /// \brief The set of exceptions in the exception specification. |
4724 | const QualType *data() const { return Exceptions.data(); } |
4725 | |
4726 | /// \brief Integrate another called method into the collected data. |
4727 | void CalledDecl(SourceLocation CallLoc, const CXXMethodDecl *Method); |
4728 | |
4729 | /// \brief Integrate an invoked expression into the collected data. |
4730 | void CalledExpr(Expr *E); |
4731 | |
4732 | /// \brief Overwrite an EPI's exception specification with this |
4733 | /// computed exception specification. |
4734 | FunctionProtoType::ExceptionSpecInfo getExceptionSpec() const { |
4735 | FunctionProtoType::ExceptionSpecInfo ESI; |
4736 | ESI.Type = getExceptionSpecType(); |
4737 | if (ESI.Type == EST_Dynamic) { |
4738 | ESI.Exceptions = Exceptions; |
4739 | } else if (ESI.Type == EST_None) { |
4740 | /// C++11 [except.spec]p14: |
4741 | /// The exception-specification is noexcept(false) if the set of |
4742 | /// potential exceptions of the special member function contains "any" |
4743 | ESI.Type = EST_ComputedNoexcept; |
4744 | ESI.NoexceptExpr = Self->ActOnCXXBoolLiteral(SourceLocation(), |
4745 | tok::kw_false).get(); |
4746 | } |
4747 | return ESI; |
4748 | } |
4749 | }; |
4750 | |
4751 | /// \brief Determine what sort of exception specification a defaulted |
4752 | /// copy constructor of a class will have. |
4753 | ImplicitExceptionSpecification |
4754 | ComputeDefaultedDefaultCtorExceptionSpec(SourceLocation Loc, |
4755 | CXXMethodDecl *MD); |
4756 | |
4757 | /// \brief Determine what sort of exception specification a defaulted |
4758 | /// default constructor of a class will have, and whether the parameter |
4759 | /// will be const. |
4760 | ImplicitExceptionSpecification |
4761 | ComputeDefaultedCopyCtorExceptionSpec(CXXMethodDecl *MD); |
4762 | |
4763 | /// \brief Determine what sort of exception specification a defautled |
4764 | /// copy assignment operator of a class will have, and whether the |
4765 | /// parameter will be const. |
4766 | ImplicitExceptionSpecification |
4767 | ComputeDefaultedCopyAssignmentExceptionSpec(CXXMethodDecl *MD); |
4768 | |
4769 | /// \brief Determine what sort of exception specification a defaulted move |
4770 | /// constructor of a class will have. |
4771 | ImplicitExceptionSpecification |
4772 | ComputeDefaultedMoveCtorExceptionSpec(CXXMethodDecl *MD); |
4773 | |
4774 | /// \brief Determine what sort of exception specification a defaulted move |
4775 | /// assignment operator of a class will have. |
4776 | ImplicitExceptionSpecification |
4777 | ComputeDefaultedMoveAssignmentExceptionSpec(CXXMethodDecl *MD); |
4778 | |
4779 | /// \brief Determine what sort of exception specification a defaulted |
4780 | /// destructor of a class will have. |
4781 | ImplicitExceptionSpecification |
4782 | ComputeDefaultedDtorExceptionSpec(CXXMethodDecl *MD); |
4783 | |
4784 | /// \brief Determine what sort of exception specification an inheriting |
4785 | /// constructor of a class will have. |
4786 | ImplicitExceptionSpecification |
4787 | ComputeInheritingCtorExceptionSpec(SourceLocation Loc, |
4788 | CXXConstructorDecl *CD); |
4789 | |
4790 | /// \brief Evaluate the implicit exception specification for a defaulted |
4791 | /// special member function. |
4792 | void EvaluateImplicitExceptionSpec(SourceLocation Loc, CXXMethodDecl *MD); |
4793 | |
4794 | /// \brief Check the given exception-specification and update the |
4795 | /// exception specification information with the results. |
4796 | void checkExceptionSpecification(bool IsTopLevel, |
4797 | ExceptionSpecificationType EST, |
4798 | ArrayRef<ParsedType> DynamicExceptions, |
4799 | ArrayRef<SourceRange> DynamicExceptionRanges, |
4800 | Expr *NoexceptExpr, |
4801 | SmallVectorImpl<QualType> &Exceptions, |
4802 | FunctionProtoType::ExceptionSpecInfo &ESI); |
4803 | |
4804 | /// \brief Determine if we're in a case where we need to (incorrectly) eagerly |
4805 | /// parse an exception specification to work around a libstdc++ bug. |
4806 | bool isLibstdcxxEagerExceptionSpecHack(const Declarator &D); |
4807 | |
4808 | /// \brief Add an exception-specification to the given member function |
4809 | /// (or member function template). The exception-specification was parsed |
4810 | /// after the method itself was declared. |
4811 | void actOnDelayedExceptionSpecification(Decl *Method, |
4812 | ExceptionSpecificationType EST, |
4813 | SourceRange SpecificationRange, |
4814 | ArrayRef<ParsedType> DynamicExceptions, |
4815 | ArrayRef<SourceRange> DynamicExceptionRanges, |
4816 | Expr *NoexceptExpr); |
4817 | |
4818 | class InheritedConstructorInfo; |
4819 | |
4820 | /// \brief Determine if a special member function should have a deleted |
4821 | /// definition when it is defaulted. |
4822 | bool ShouldDeleteSpecialMember(CXXMethodDecl *MD, CXXSpecialMember CSM, |
4823 | InheritedConstructorInfo *ICI = nullptr, |
4824 | bool Diagnose = false); |
4825 | |
4826 | /// \brief Declare the implicit default constructor for the given class. |
4827 | /// |
4828 | /// \param ClassDecl The class declaration into which the implicit |
4829 | /// default constructor will be added. |
4830 | /// |
4831 | /// \returns The implicitly-declared default constructor. |
4832 | CXXConstructorDecl *DeclareImplicitDefaultConstructor( |
4833 | CXXRecordDecl *ClassDecl); |
4834 | |
4835 | /// DefineImplicitDefaultConstructor - Checks for feasibility of |
4836 | /// defining this constructor as the default constructor. |
4837 | void DefineImplicitDefaultConstructor(SourceLocation CurrentLocation, |
4838 | CXXConstructorDecl *Constructor); |
4839 | |
4840 | /// \brief Declare the implicit destructor for the given class. |
4841 | /// |
4842 | /// \param ClassDecl The class declaration into which the implicit |
4843 | /// destructor will be added. |
4844 | /// |
4845 | /// \returns The implicitly-declared destructor. |
4846 | CXXDestructorDecl *DeclareImplicitDestructor(CXXRecordDecl *ClassDecl); |
4847 | |
4848 | /// DefineImplicitDestructor - Checks for feasibility of |
4849 | /// defining this destructor as the default destructor. |
4850 | void DefineImplicitDestructor(SourceLocation CurrentLocation, |
4851 | CXXDestructorDecl *Destructor); |
4852 | |
4853 | /// \brief Build an exception spec for destructors that don't have one. |
4854 | /// |
4855 | /// C++11 says that user-defined destructors with no exception spec get one |
4856 | /// that looks as if the destructor was implicitly declared. |
4857 | void AdjustDestructorExceptionSpec(CXXRecordDecl *ClassDecl, |
4858 | CXXDestructorDecl *Destructor); |
4859 | |
4860 | /// \brief Define the specified inheriting constructor. |
4861 | void DefineInheritingConstructor(SourceLocation UseLoc, |
4862 | CXXConstructorDecl *Constructor); |
4863 | |
4864 | /// \brief Declare the implicit copy constructor for the given class. |
4865 | /// |
4866 | /// \param ClassDecl The class declaration into which the implicit |
4867 | /// copy constructor will be added. |
4868 | /// |
4869 | /// \returns The implicitly-declared copy constructor. |
4870 | CXXConstructorDecl *DeclareImplicitCopyConstructor(CXXRecordDecl *ClassDecl); |
4871 | |
4872 | /// DefineImplicitCopyConstructor - Checks for feasibility of |
4873 | /// defining this constructor as the copy constructor. |
4874 | void DefineImplicitCopyConstructor(SourceLocation CurrentLocation, |
4875 | CXXConstructorDecl *Constructor); |
4876 | |
4877 | /// \brief Declare the implicit move constructor for the given class. |
4878 | /// |
4879 | /// \param ClassDecl The Class declaration into which the implicit |
4880 | /// move constructor will be added. |
4881 | /// |
4882 | /// \returns The implicitly-declared move constructor, or NULL if it wasn't |
4883 | /// declared. |
4884 | CXXConstructorDecl *DeclareImplicitMoveConstructor(CXXRecordDecl *ClassDecl); |
4885 | |
4886 | /// DefineImplicitMoveConstructor - Checks for feasibility of |
4887 | /// defining this constructor as the move constructor. |
4888 | void DefineImplicitMoveConstructor(SourceLocation CurrentLocation, |
4889 | CXXConstructorDecl *Constructor); |
4890 | |
4891 | /// \brief Declare the implicit copy assignment operator for the given class. |
4892 | /// |
4893 | /// \param ClassDecl The class declaration into which the implicit |
4894 | /// copy assignment operator will be added. |
4895 | /// |
4896 | /// \returns The implicitly-declared copy assignment operator. |
4897 | CXXMethodDecl *DeclareImplicitCopyAssignment(CXXRecordDecl *ClassDecl); |
4898 | |
4899 | /// \brief Defines an implicitly-declared copy assignment operator. |
4900 | void DefineImplicitCopyAssignment(SourceLocation CurrentLocation, |
4901 | CXXMethodDecl *MethodDecl); |
4902 | |
4903 | /// \brief Declare the implicit move assignment operator for the given class. |
4904 | /// |
4905 | /// \param ClassDecl The Class declaration into which the implicit |
4906 | /// move assignment operator will be added. |
4907 | /// |
4908 | /// \returns The implicitly-declared move assignment operator, or NULL if it |
4909 | /// wasn't declared. |
4910 | CXXMethodDecl *DeclareImplicitMoveAssignment(CXXRecordDecl *ClassDecl); |
4911 | |
4912 | /// \brief Defines an implicitly-declared move assignment operator. |
4913 | void DefineImplicitMoveAssignment(SourceLocation CurrentLocation, |
4914 | CXXMethodDecl *MethodDecl); |
4915 | |
4916 | /// \brief Force the declaration of any implicitly-declared members of this |
4917 | /// class. |
4918 | void ForceDeclarationOfImplicitMembers(CXXRecordDecl *Class); |
4919 | |
4920 | /// \brief Check a completed declaration of an implicit special member. |
4921 | void CheckImplicitSpecialMemberDeclaration(Scope *S, FunctionDecl *FD); |
4922 | |
4923 | /// \brief Determine whether the given function is an implicitly-deleted |
4924 | /// special member function. |
4925 | bool isImplicitlyDeleted(FunctionDecl *FD); |
4926 | |
4927 | /// \brief Check whether 'this' shows up in the type of a static member |
4928 | /// function after the (naturally empty) cv-qualifier-seq would be. |
4929 | /// |
4930 | /// \returns true if an error occurred. |
4931 | bool checkThisInStaticMemberFunctionType(CXXMethodDecl *Method); |
4932 | |
4933 | /// \brief Whether this' shows up in the exception specification of a static |
4934 | /// member function. |
4935 | bool checkThisInStaticMemberFunctionExceptionSpec(CXXMethodDecl *Method); |
4936 | |
4937 | /// \brief Check whether 'this' shows up in the attributes of the given |
4938 | /// static member function. |
4939 | /// |
4940 | /// \returns true if an error occurred. |
4941 | bool checkThisInStaticMemberFunctionAttributes(CXXMethodDecl *Method); |
4942 | |
4943 | /// MaybeBindToTemporary - If the passed in expression has a record type with |
4944 | /// a non-trivial destructor, this will return CXXBindTemporaryExpr. Otherwise |
4945 | /// it simply returns the passed in expression. |
4946 | ExprResult MaybeBindToTemporary(Expr *E); |
4947 | |
4948 | bool CompleteConstructorCall(CXXConstructorDecl *Constructor, |
4949 | MultiExprArg ArgsPtr, |
4950 | SourceLocation Loc, |
4951 | SmallVectorImpl<Expr*> &ConvertedArgs, |
4952 | bool AllowExplicit = false, |
4953 | bool IsListInitialization = false); |
4954 | |
4955 | ParsedType getInheritingConstructorName(CXXScopeSpec &SS, |
4956 | SourceLocation NameLoc, |
4957 | IdentifierInfo &Name); |
4958 | |
4959 | ParsedType getDestructorName(SourceLocation TildeLoc, |
4960 | IdentifierInfo &II, SourceLocation NameLoc, |
4961 | Scope *S, CXXScopeSpec &SS, |
4962 | ParsedType ObjectType, |
4963 | bool EnteringContext); |
4964 | |
4965 | ParsedType getDestructorTypeForDecltype(const DeclSpec &DS, |
4966 | ParsedType ObjectType); |
4967 | |
4968 | // Checks that reinterpret casts don't have undefined behavior. |
4969 | void CheckCompatibleReinterpretCast(QualType SrcType, QualType DestType, |
4970 | bool IsDereference, SourceRange Range); |
4971 | |
4972 | /// ActOnCXXNamedCast - Parse {dynamic,static,reinterpret,const}_cast's. |
4973 | ExprResult ActOnCXXNamedCast(SourceLocation OpLoc, |
4974 | tok::TokenKind Kind, |
4975 | SourceLocation LAngleBracketLoc, |
4976 | Declarator &D, |
4977 | SourceLocation RAngleBracketLoc, |
4978 | SourceLocation LParenLoc, |
4979 | Expr *E, |
4980 | SourceLocation RParenLoc); |
4981 | |
4982 | ExprResult BuildCXXNamedCast(SourceLocation OpLoc, |
4983 | tok::TokenKind Kind, |
4984 | TypeSourceInfo *Ty, |
4985 | Expr *E, |
4986 | SourceRange AngleBrackets, |
4987 | SourceRange Parens); |
4988 | |
4989 | ExprResult BuildCXXTypeId(QualType TypeInfoType, |
4990 | SourceLocation TypeidLoc, |
4991 | TypeSourceInfo *Operand, |
4992 | SourceLocation RParenLoc); |
4993 | ExprResult BuildCXXTypeId(QualType TypeInfoType, |
4994 | SourceLocation TypeidLoc, |
4995 | Expr *Operand, |
4996 | SourceLocation RParenLoc); |
4997 | |
4998 | /// ActOnCXXTypeid - Parse typeid( something ). |
4999 | ExprResult ActOnCXXTypeid(SourceLocation OpLoc, |
5000 | SourceLocation LParenLoc, bool isType, |
5001 | void *TyOrExpr, |
5002 | SourceLocation RParenLoc); |
5003 | |
5004 | ExprResult BuildCXXUuidof(QualType TypeInfoType, |
5005 | SourceLocation TypeidLoc, |
5006 | TypeSourceInfo *Operand, |
5007 | SourceLocation RParenLoc); |
5008 | ExprResult BuildCXXUuidof(QualType TypeInfoType, |
5009 | SourceLocation TypeidLoc, |
5010 | Expr *Operand, |
5011 | SourceLocation RParenLoc); |
5012 | |
5013 | /// ActOnCXXUuidof - Parse __uuidof( something ). |
5014 | ExprResult ActOnCXXUuidof(SourceLocation OpLoc, |
5015 | SourceLocation LParenLoc, bool isType, |
5016 | void *TyOrExpr, |
5017 | SourceLocation RParenLoc); |
5018 | |
5019 | /// \brief Handle a C++1z fold-expression: ( expr op ... op expr ). |
5020 | ExprResult ActOnCXXFoldExpr(SourceLocation LParenLoc, Expr *LHS, |
5021 | tok::TokenKind Operator, |
5022 | SourceLocation EllipsisLoc, Expr *RHS, |
5023 | SourceLocation RParenLoc); |
5024 | ExprResult BuildCXXFoldExpr(SourceLocation LParenLoc, Expr *LHS, |
5025 | BinaryOperatorKind Operator, |
5026 | SourceLocation EllipsisLoc, Expr *RHS, |
5027 | SourceLocation RParenLoc); |
5028 | ExprResult BuildEmptyCXXFoldExpr(SourceLocation EllipsisLoc, |
5029 | BinaryOperatorKind Operator); |
5030 | |
5031 | //// ActOnCXXThis - Parse 'this' pointer. |
5032 | ExprResult ActOnCXXThis(SourceLocation loc); |
5033 | |
5034 | /// \brief Try to retrieve the type of the 'this' pointer. |
5035 | /// |
5036 | /// \returns The type of 'this', if possible. Otherwise, returns a NULL type. |
5037 | QualType getCurrentThisType(); |
5038 | |
5039 | /// \brief When non-NULL, the C++ 'this' expression is allowed despite the |
5040 | /// current context not being a non-static member function. In such cases, |
5041 | /// this provides the type used for 'this'. |
5042 | QualType CXXThisTypeOverride; |
5043 | |
5044 | /// \brief RAII object used to temporarily allow the C++ 'this' expression |
5045 | /// to be used, with the given qualifiers on the current class type. |
5046 | class CXXThisScopeRAII { |
5047 | Sema &S; |
5048 | QualType OldCXXThisTypeOverride; |
5049 | bool Enabled; |
5050 | |
5051 | public: |
5052 | /// \brief Introduce a new scope where 'this' may be allowed (when enabled), |
5053 | /// using the given declaration (which is either a class template or a |
5054 | /// class) along with the given qualifiers. |
5055 | /// along with the qualifiers placed on '*this'. |
5056 | CXXThisScopeRAII(Sema &S, Decl *ContextDecl, unsigned CXXThisTypeQuals, |
5057 | bool Enabled = true); |
5058 | |
5059 | ~CXXThisScopeRAII(); |
5060 | }; |
5061 | |
5062 | /// \brief Make sure the value of 'this' is actually available in the current |
5063 | /// context, if it is a potentially evaluated context. |
5064 | /// |
5065 | /// \param Loc The location at which the capture of 'this' occurs. |
5066 | /// |
5067 | /// \param Explicit Whether 'this' is explicitly captured in a lambda |
5068 | /// capture list. |
5069 | /// |
5070 | /// \param FunctionScopeIndexToStopAt If non-null, it points to the index |
5071 | /// of the FunctionScopeInfo stack beyond which we do not attempt to capture. |
5072 | /// This is useful when enclosing lambdas must speculatively capture |
5073 | /// 'this' that may or may not be used in certain specializations of |
5074 | /// a nested generic lambda (depending on whether the name resolves to |
5075 | /// a non-static member function or a static function). |
5076 | /// \return returns 'true' if failed, 'false' if success. |
5077 | bool CheckCXXThisCapture(SourceLocation Loc, bool Explicit = false, |
5078 | bool BuildAndDiagnose = true, |
5079 | const unsigned *const FunctionScopeIndexToStopAt = nullptr, |
5080 | bool ByCopy = false); |
5081 | |
5082 | /// \brief Determine whether the given type is the type of *this that is used |
5083 | /// outside of the body of a member function for a type that is currently |
5084 | /// being defined. |
5085 | bool isThisOutsideMemberFunctionBody(QualType BaseType); |
5086 | |
5087 | /// ActOnCXXBoolLiteral - Parse {true,false} literals. |
5088 | ExprResult ActOnCXXBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind); |
5089 | |
5090 | |
5091 | /// ActOnObjCBoolLiteral - Parse {__objc_yes,__objc_no} literals. |
5092 | ExprResult ActOnObjCBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind); |
5093 | |
5094 | ExprResult |
5095 | ActOnObjCAvailabilityCheckExpr(llvm::ArrayRef<AvailabilitySpec> AvailSpecs, |
5096 | SourceLocation AtLoc, SourceLocation RParen); |
5097 | |
5098 | /// ActOnCXXNullPtrLiteral - Parse 'nullptr'. |
5099 | ExprResult ActOnCXXNullPtrLiteral(SourceLocation Loc); |
5100 | |
5101 | //// ActOnCXXThrow - Parse throw expressions. |
5102 | ExprResult ActOnCXXThrow(Scope *S, SourceLocation OpLoc, Expr *expr); |
5103 | ExprResult BuildCXXThrow(SourceLocation OpLoc, Expr *Ex, |
5104 | bool IsThrownVarInScope); |
5105 | bool CheckCXXThrowOperand(SourceLocation ThrowLoc, QualType ThrowTy, Expr *E); |
5106 | |
5107 | /// ActOnCXXTypeConstructExpr - Parse construction of a specified type. |
5108 | /// Can be interpreted either as function-style casting ("int(x)") |
5109 | /// or class type construction ("ClassType(x,y,z)") |
5110 | /// or creation of a value-initialized type ("int()"). |
5111 | ExprResult ActOnCXXTypeConstructExpr(ParsedType TypeRep, |
5112 | SourceLocation LParenOrBraceLoc, |
5113 | MultiExprArg Exprs, |
5114 | SourceLocation RParenOrBraceLoc, |
5115 | bool ListInitialization); |
5116 | |
5117 | ExprResult BuildCXXTypeConstructExpr(TypeSourceInfo *Type, |
5118 | SourceLocation LParenLoc, |
5119 | MultiExprArg Exprs, |
5120 | SourceLocation RParenLoc, |
5121 | bool ListInitialization); |
5122 | |
5123 | /// ActOnCXXNew - Parsed a C++ 'new' expression. |
5124 | ExprResult ActOnCXXNew(SourceLocation StartLoc, bool UseGlobal, |
5125 | SourceLocation PlacementLParen, |
5126 | MultiExprArg PlacementArgs, |
5127 | SourceLocation PlacementRParen, |
5128 | SourceRange TypeIdParens, Declarator &D, |
5129 | Expr *Initializer); |
5130 | ExprResult BuildCXXNew(SourceRange Range, bool UseGlobal, |
5131 | SourceLocation PlacementLParen, |
5132 | MultiExprArg PlacementArgs, |
5133 | SourceLocation PlacementRParen, |
5134 | SourceRange TypeIdParens, |
5135 | QualType AllocType, |
5136 | TypeSourceInfo *AllocTypeInfo, |
5137 | Expr *ArraySize, |
5138 | SourceRange DirectInitRange, |
5139 | Expr *Initializer); |
5140 | |
5141 | bool CheckAllocatedType(QualType AllocType, SourceLocation Loc, |
5142 | SourceRange R); |
5143 | |
5144 | /// \brief The scope in which to find allocation functions. |
5145 | enum AllocationFunctionScope { |
5146 | /// \brief Only look for allocation functions in the global scope. |
5147 | AFS_Global, |
5148 | /// \brief Only look for allocation functions in the scope of the |
5149 | /// allocated class. |
5150 | AFS_Class, |
5151 | /// \brief Look for allocation functions in both the global scope |
5152 | /// and in the scope of the allocated class. |
5153 | AFS_Both |
5154 | }; |
5155 | |
5156 | /// \brief Finds the overloads of operator new and delete that are appropriate |
5157 | /// for the allocation. |
5158 | bool FindAllocationFunctions(SourceLocation StartLoc, SourceRange Range, |
5159 | AllocationFunctionScope NewScope, |
5160 | AllocationFunctionScope DeleteScope, |
5161 | QualType AllocType, bool IsArray, |
5162 | bool &PassAlignment, MultiExprArg PlaceArgs, |
5163 | FunctionDecl *&OperatorNew, |
5164 | FunctionDecl *&OperatorDelete, |
5165 | bool Diagnose = true); |
5166 | void DeclareGlobalNewDelete(); |
5167 | void DeclareGlobalAllocationFunction(DeclarationName Name, QualType Return, |
5168 | ArrayRef<QualType> Params); |
5169 | |
5170 | bool FindDeallocationFunction(SourceLocation StartLoc, CXXRecordDecl *RD, |
5171 | DeclarationName Name, FunctionDecl* &Operator, |
5172 | bool Diagnose = true); |
5173 | FunctionDecl *FindUsualDeallocationFunction(SourceLocation StartLoc, |
5174 | bool CanProvideSize, |
5175 | bool Overaligned, |
5176 | DeclarationName Name); |
5177 | FunctionDecl *FindDeallocationFunctionForDestructor(SourceLocation StartLoc, |
5178 | CXXRecordDecl *RD); |
5179 | |
5180 | /// ActOnCXXDelete - Parsed a C++ 'delete' expression |
5181 | ExprResult ActOnCXXDelete(SourceLocation StartLoc, |
5182 | bool UseGlobal, bool ArrayForm, |
5183 | Expr *Operand); |
5184 | void CheckVirtualDtorCall(CXXDestructorDecl *dtor, SourceLocation Loc, |
5185 | bool IsDelete, bool CallCanBeVirtual, |
5186 | bool WarnOnNonAbstractTypes, |
5187 | SourceLocation DtorLoc); |
5188 | |
5189 | ExprResult ActOnNoexceptExpr(SourceLocation KeyLoc, SourceLocation LParen, |
5190 | Expr *Operand, SourceLocation RParen); |
5191 | ExprResult BuildCXXNoexceptExpr(SourceLocation KeyLoc, Expr *Operand, |
5192 | SourceLocation RParen); |
5193 | |
5194 | /// \brief Parsed one of the type trait support pseudo-functions. |
5195 | ExprResult ActOnTypeTrait(TypeTrait Kind, SourceLocation KWLoc, |
5196 | ArrayRef<ParsedType> Args, |
5197 | SourceLocation RParenLoc); |
5198 | ExprResult BuildTypeTrait(TypeTrait Kind, SourceLocation KWLoc, |
5199 | ArrayRef<TypeSourceInfo *> Args, |
5200 | SourceLocation RParenLoc); |
5201 | |
5202 | /// ActOnArrayTypeTrait - Parsed one of the binary type trait support |
5203 | /// pseudo-functions. |
5204 | ExprResult ActOnArrayTypeTrait(ArrayTypeTrait ATT, |
5205 | SourceLocation KWLoc, |
5206 | ParsedType LhsTy, |
5207 | Expr *DimExpr, |
5208 | SourceLocation RParen); |
5209 | |
5210 | ExprResult BuildArrayTypeTrait(ArrayTypeTrait ATT, |
5211 | SourceLocation KWLoc, |
5212 | TypeSourceInfo *TSInfo, |
5213 | Expr *DimExpr, |
5214 | SourceLocation RParen); |
5215 | |
5216 | /// ActOnExpressionTrait - Parsed one of the unary type trait support |
5217 | /// pseudo-functions. |
5218 | ExprResult ActOnExpressionTrait(ExpressionTrait OET, |
5219 | SourceLocation KWLoc, |
5220 | Expr *Queried, |
5221 | SourceLocation RParen); |
5222 | |
5223 | ExprResult BuildExpressionTrait(ExpressionTrait OET, |
5224 | SourceLocation KWLoc, |
5225 | Expr *Queried, |
5226 | SourceLocation RParen); |
5227 | |
5228 | ExprResult ActOnStartCXXMemberReference(Scope *S, |
5229 | Expr *Base, |
5230 | SourceLocation OpLoc, |
5231 | tok::TokenKind OpKind, |
5232 | ParsedType &ObjectType, |
5233 | bool &MayBePseudoDestructor); |
5234 | |
5235 | ExprResult BuildPseudoDestructorExpr(Expr *Base, |
5236 | SourceLocation OpLoc, |
5237 | tok::TokenKind OpKind, |
5238 | const CXXScopeSpec &SS, |
5239 | TypeSourceInfo *ScopeType, |
5240 | SourceLocation CCLoc, |
5241 | SourceLocation TildeLoc, |
5242 | PseudoDestructorTypeStorage DestroyedType); |
5243 | |
5244 | ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, |
5245 | SourceLocation OpLoc, |
5246 | tok::TokenKind OpKind, |
5247 | CXXScopeSpec &SS, |
5248 | UnqualifiedId &FirstTypeName, |
5249 | SourceLocation CCLoc, |
5250 | SourceLocation TildeLoc, |
5251 | UnqualifiedId &SecondTypeName); |
5252 | |
5253 | ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, |
5254 | SourceLocation OpLoc, |
5255 | tok::TokenKind OpKind, |
5256 | SourceLocation TildeLoc, |
5257 | const DeclSpec& DS); |
5258 | |
5259 | /// MaybeCreateExprWithCleanups - If the current full-expression |
5260 | /// requires any cleanups, surround it with a ExprWithCleanups node. |
5261 | /// Otherwise, just returns the passed-in expression. |
5262 | Expr *MaybeCreateExprWithCleanups(Expr *SubExpr); |
5263 | Stmt *MaybeCreateStmtWithCleanups(Stmt *SubStmt); |
5264 | ExprResult MaybeCreateExprWithCleanups(ExprResult SubExpr); |
5265 | |
5266 | MaterializeTemporaryExpr * |
5267 | CreateMaterializeTemporaryExpr(QualType T, Expr *Temporary, |
5268 | bool BoundToLvalueReference); |
5269 | |
5270 | ExprResult ActOnFinishFullExpr(Expr *Expr) { |
5271 | return ActOnFinishFullExpr(Expr, Expr ? Expr->getExprLoc() |
5272 | : SourceLocation()); |
5273 | } |
5274 | ExprResult ActOnFinishFullExpr(Expr *Expr, SourceLocation CC, |
5275 | bool DiscardedValue = false, |
5276 | bool IsConstexpr = false, |
5277 | bool IsLambdaInitCaptureInitializer = false); |
5278 | StmtResult ActOnFinishFullStmt(Stmt *Stmt); |
5279 | |
5280 | // Marks SS invalid if it represents an incomplete type. |
5281 | bool RequireCompleteDeclContext(CXXScopeSpec &SS, DeclContext *DC); |
5282 | |
5283 | DeclContext *computeDeclContext(QualType T); |
5284 | DeclContext *computeDeclContext(const CXXScopeSpec &SS, |
5285 | bool EnteringContext = false); |
5286 | bool isDependentScopeSpecifier(const CXXScopeSpec &SS); |
5287 | CXXRecordDecl *getCurrentInstantiationOf(NestedNameSpecifier *NNS); |
5288 | |
5289 | /// \brief The parser has parsed a global nested-name-specifier '::'. |
5290 | /// |