File: | clang/lib/AST/DeclCXX.cpp |
Warning: | line 2294, column 38 Called C++ object pointer is null |
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1 | //===- DeclCXX.cpp - C++ Declaration AST Node Implementation --------------===// | |||
2 | // | |||
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |||
4 | // See https://llvm.org/LICENSE.txt for license information. | |||
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |||
6 | // | |||
7 | //===----------------------------------------------------------------------===// | |||
8 | // | |||
9 | // This file implements the C++ related Decl classes. | |||
10 | // | |||
11 | //===----------------------------------------------------------------------===// | |||
12 | ||||
13 | #include "clang/AST/DeclCXX.h" | |||
14 | #include "clang/AST/ASTContext.h" | |||
15 | #include "clang/AST/ASTLambda.h" | |||
16 | #include "clang/AST/ASTMutationListener.h" | |||
17 | #include "clang/AST/ASTUnresolvedSet.h" | |||
18 | #include "clang/AST/CXXInheritance.h" | |||
19 | #include "clang/AST/DeclBase.h" | |||
20 | #include "clang/AST/DeclTemplate.h" | |||
21 | #include "clang/AST/DeclarationName.h" | |||
22 | #include "clang/AST/Expr.h" | |||
23 | #include "clang/AST/ExprCXX.h" | |||
24 | #include "clang/AST/LambdaCapture.h" | |||
25 | #include "clang/AST/NestedNameSpecifier.h" | |||
26 | #include "clang/AST/ODRHash.h" | |||
27 | #include "clang/AST/Type.h" | |||
28 | #include "clang/AST/TypeLoc.h" | |||
29 | #include "clang/AST/UnresolvedSet.h" | |||
30 | #include "clang/Basic/Diagnostic.h" | |||
31 | #include "clang/Basic/IdentifierTable.h" | |||
32 | #include "clang/Basic/LLVM.h" | |||
33 | #include "clang/Basic/LangOptions.h" | |||
34 | #include "clang/Basic/OperatorKinds.h" | |||
35 | #include "clang/Basic/PartialDiagnostic.h" | |||
36 | #include "clang/Basic/SourceLocation.h" | |||
37 | #include "clang/Basic/Specifiers.h" | |||
38 | #include "llvm/ADT/None.h" | |||
39 | #include "llvm/ADT/SmallPtrSet.h" | |||
40 | #include "llvm/ADT/SmallVector.h" | |||
41 | #include "llvm/ADT/iterator_range.h" | |||
42 | #include "llvm/Support/Casting.h" | |||
43 | #include "llvm/Support/ErrorHandling.h" | |||
44 | #include "llvm/Support/raw_ostream.h" | |||
45 | #include <algorithm> | |||
46 | #include <cassert> | |||
47 | #include <cstddef> | |||
48 | #include <cstdint> | |||
49 | ||||
50 | using namespace clang; | |||
51 | ||||
52 | //===----------------------------------------------------------------------===// | |||
53 | // Decl Allocation/Deallocation Method Implementations | |||
54 | //===----------------------------------------------------------------------===// | |||
55 | ||||
56 | void AccessSpecDecl::anchor() {} | |||
57 | ||||
58 | AccessSpecDecl *AccessSpecDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
59 | return new (C, ID) AccessSpecDecl(EmptyShell()); | |||
60 | } | |||
61 | ||||
62 | void LazyASTUnresolvedSet::getFromExternalSource(ASTContext &C) const { | |||
63 | ExternalASTSource *Source = C.getExternalSource(); | |||
64 | assert(Impl.Decls.isLazy() && "getFromExternalSource for non-lazy set")((Impl.Decls.isLazy() && "getFromExternalSource for non-lazy set" ) ? static_cast<void> (0) : __assert_fail ("Impl.Decls.isLazy() && \"getFromExternalSource for non-lazy set\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 64, __PRETTY_FUNCTION__)); | |||
65 | assert(Source && "getFromExternalSource with no external source")((Source && "getFromExternalSource with no external source" ) ? static_cast<void> (0) : __assert_fail ("Source && \"getFromExternalSource with no external source\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 65, __PRETTY_FUNCTION__)); | |||
66 | ||||
67 | for (ASTUnresolvedSet::iterator I = Impl.begin(); I != Impl.end(); ++I) | |||
68 | I.setDecl(cast<NamedDecl>(Source->GetExternalDecl( | |||
69 | reinterpret_cast<uintptr_t>(I.getDecl()) >> 2))); | |||
70 | Impl.Decls.setLazy(false); | |||
71 | } | |||
72 | ||||
73 | CXXRecordDecl::DefinitionData::DefinitionData(CXXRecordDecl *D) | |||
74 | : UserDeclaredConstructor(false), UserDeclaredSpecialMembers(0), | |||
75 | Aggregate(true), PlainOldData(true), Empty(true), Polymorphic(false), | |||
76 | Abstract(false), IsStandardLayout(true), IsCXX11StandardLayout(true), | |||
77 | HasBasesWithFields(false), HasBasesWithNonStaticDataMembers(false), | |||
78 | HasPrivateFields(false), HasProtectedFields(false), | |||
79 | HasPublicFields(false), HasMutableFields(false), HasVariantMembers(false), | |||
80 | HasOnlyCMembers(true), HasInClassInitializer(false), | |||
81 | HasUninitializedReferenceMember(false), HasUninitializedFields(false), | |||
82 | HasInheritedConstructor(false), HasInheritedAssignment(false), | |||
83 | NeedOverloadResolutionForCopyConstructor(false), | |||
84 | NeedOverloadResolutionForMoveConstructor(false), | |||
85 | NeedOverloadResolutionForMoveAssignment(false), | |||
86 | NeedOverloadResolutionForDestructor(false), | |||
87 | DefaultedCopyConstructorIsDeleted(false), | |||
88 | DefaultedMoveConstructorIsDeleted(false), | |||
89 | DefaultedMoveAssignmentIsDeleted(false), | |||
90 | DefaultedDestructorIsDeleted(false), HasTrivialSpecialMembers(SMF_All), | |||
91 | HasTrivialSpecialMembersForCall(SMF_All), | |||
92 | DeclaredNonTrivialSpecialMembers(0), | |||
93 | DeclaredNonTrivialSpecialMembersForCall(0), HasIrrelevantDestructor(true), | |||
94 | HasConstexprNonCopyMoveConstructor(false), | |||
95 | HasDefaultedDefaultConstructor(false), | |||
96 | DefaultedDefaultConstructorIsConstexpr(true), | |||
97 | HasConstexprDefaultConstructor(false), | |||
98 | DefaultedDestructorIsConstexpr(true), | |||
99 | HasNonLiteralTypeFieldsOrBases(false), | |||
100 | UserProvidedDefaultConstructor(false), DeclaredSpecialMembers(0), | |||
101 | ImplicitCopyConstructorCanHaveConstParamForVBase(true), | |||
102 | ImplicitCopyConstructorCanHaveConstParamForNonVBase(true), | |||
103 | ImplicitCopyAssignmentHasConstParam(true), | |||
104 | HasDeclaredCopyConstructorWithConstParam(false), | |||
105 | HasDeclaredCopyAssignmentWithConstParam(false), IsLambda(false), | |||
106 | IsParsingBaseSpecifiers(false), ComputedVisibleConversions(false), | |||
107 | HasODRHash(false), Definition(D) {} | |||
108 | ||||
109 | CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getBasesSlowCase() const { | |||
110 | return Bases.get(Definition->getASTContext().getExternalSource()); | |||
111 | } | |||
112 | ||||
113 | CXXBaseSpecifier *CXXRecordDecl::DefinitionData::getVBasesSlowCase() const { | |||
114 | return VBases.get(Definition->getASTContext().getExternalSource()); | |||
115 | } | |||
116 | ||||
117 | CXXRecordDecl::CXXRecordDecl(Kind K, TagKind TK, const ASTContext &C, | |||
118 | DeclContext *DC, SourceLocation StartLoc, | |||
119 | SourceLocation IdLoc, IdentifierInfo *Id, | |||
120 | CXXRecordDecl *PrevDecl) | |||
121 | : RecordDecl(K, TK, C, DC, StartLoc, IdLoc, Id, PrevDecl), | |||
122 | DefinitionData(PrevDecl ? PrevDecl->DefinitionData | |||
123 | : nullptr) {} | |||
124 | ||||
125 | CXXRecordDecl *CXXRecordDecl::Create(const ASTContext &C, TagKind TK, | |||
126 | DeclContext *DC, SourceLocation StartLoc, | |||
127 | SourceLocation IdLoc, IdentifierInfo *Id, | |||
128 | CXXRecordDecl *PrevDecl, | |||
129 | bool DelayTypeCreation) { | |||
130 | auto *R = new (C, DC) CXXRecordDecl(CXXRecord, TK, C, DC, StartLoc, IdLoc, Id, | |||
131 | PrevDecl); | |||
132 | R->setMayHaveOutOfDateDef(C.getLangOpts().Modules); | |||
133 | ||||
134 | // FIXME: DelayTypeCreation seems like such a hack | |||
135 | if (!DelayTypeCreation) | |||
136 | C.getTypeDeclType(R, PrevDecl); | |||
137 | return R; | |||
138 | } | |||
139 | ||||
140 | CXXRecordDecl * | |||
141 | CXXRecordDecl::CreateLambda(const ASTContext &C, DeclContext *DC, | |||
142 | TypeSourceInfo *Info, SourceLocation Loc, | |||
143 | bool Dependent, bool IsGeneric, | |||
144 | LambdaCaptureDefault CaptureDefault) { | |||
145 | auto *R = new (C, DC) CXXRecordDecl(CXXRecord, TTK_Class, C, DC, Loc, Loc, | |||
146 | nullptr, nullptr); | |||
147 | R->setBeingDefined(true); | |||
148 | R->DefinitionData = | |||
149 | new (C) struct LambdaDefinitionData(R, Info, Dependent, IsGeneric, | |||
150 | CaptureDefault); | |||
151 | R->setMayHaveOutOfDateDef(false); | |||
152 | R->setImplicit(true); | |||
153 | C.getTypeDeclType(R, /*PrevDecl=*/nullptr); | |||
154 | return R; | |||
155 | } | |||
156 | ||||
157 | CXXRecordDecl * | |||
158 | CXXRecordDecl::CreateDeserialized(const ASTContext &C, unsigned ID) { | |||
159 | auto *R = new (C, ID) CXXRecordDecl( | |||
160 | CXXRecord, TTK_Struct, C, nullptr, SourceLocation(), SourceLocation(), | |||
161 | nullptr, nullptr); | |||
162 | R->setMayHaveOutOfDateDef(false); | |||
163 | return R; | |||
164 | } | |||
165 | ||||
166 | /// Determine whether a class has a repeated base class. This is intended for | |||
167 | /// use when determining if a class is standard-layout, so makes no attempt to | |||
168 | /// handle virtual bases. | |||
169 | static bool hasRepeatedBaseClass(const CXXRecordDecl *StartRD) { | |||
170 | llvm::SmallPtrSet<const CXXRecordDecl*, 8> SeenBaseTypes; | |||
171 | SmallVector<const CXXRecordDecl*, 8> WorkList = {StartRD}; | |||
172 | while (!WorkList.empty()) { | |||
173 | const CXXRecordDecl *RD = WorkList.pop_back_val(); | |||
174 | for (const CXXBaseSpecifier &BaseSpec : RD->bases()) { | |||
175 | if (const CXXRecordDecl *B = BaseSpec.getType()->getAsCXXRecordDecl()) { | |||
176 | if (!SeenBaseTypes.insert(B).second) | |||
177 | return true; | |||
178 | WorkList.push_back(B); | |||
179 | } | |||
180 | } | |||
181 | } | |||
182 | return false; | |||
183 | } | |||
184 | ||||
185 | void | |||
186 | CXXRecordDecl::setBases(CXXBaseSpecifier const * const *Bases, | |||
187 | unsigned NumBases) { | |||
188 | ASTContext &C = getASTContext(); | |||
189 | ||||
190 | if (!data().Bases.isOffset() && data().NumBases > 0) | |||
191 | C.Deallocate(data().getBases()); | |||
192 | ||||
193 | if (NumBases) { | |||
194 | if (!C.getLangOpts().CPlusPlus17) { | |||
195 | // C++ [dcl.init.aggr]p1: | |||
196 | // An aggregate is [...] a class with [...] no base classes [...]. | |||
197 | data().Aggregate = false; | |||
198 | } | |||
199 | ||||
200 | // C++ [class]p4: | |||
201 | // A POD-struct is an aggregate class... | |||
202 | data().PlainOldData = false; | |||
203 | } | |||
204 | ||||
205 | // The set of seen virtual base types. | |||
206 | llvm::SmallPtrSet<CanQualType, 8> SeenVBaseTypes; | |||
207 | ||||
208 | // The virtual bases of this class. | |||
209 | SmallVector<const CXXBaseSpecifier *, 8> VBases; | |||
210 | ||||
211 | data().Bases = new(C) CXXBaseSpecifier [NumBases]; | |||
212 | data().NumBases = NumBases; | |||
213 | for (unsigned i = 0; i < NumBases; ++i) { | |||
214 | data().getBases()[i] = *Bases[i]; | |||
215 | // Keep track of inherited vbases for this base class. | |||
216 | const CXXBaseSpecifier *Base = Bases[i]; | |||
217 | QualType BaseType = Base->getType(); | |||
218 | // Skip dependent types; we can't do any checking on them now. | |||
219 | if (BaseType->isDependentType()) | |||
220 | continue; | |||
221 | auto *BaseClassDecl = | |||
222 | cast<CXXRecordDecl>(BaseType->castAs<RecordType>()->getDecl()); | |||
223 | ||||
224 | // C++2a [class]p7: | |||
225 | // A standard-layout class is a class that: | |||
226 | // [...] | |||
227 | // -- has all non-static data members and bit-fields in the class and | |||
228 | // its base classes first declared in the same class | |||
229 | if (BaseClassDecl->data().HasBasesWithFields || | |||
230 | !BaseClassDecl->field_empty()) { | |||
231 | if (data().HasBasesWithFields) | |||
232 | // Two bases have members or bit-fields: not standard-layout. | |||
233 | data().IsStandardLayout = false; | |||
234 | data().HasBasesWithFields = true; | |||
235 | } | |||
236 | ||||
237 | // C++11 [class]p7: | |||
238 | // A standard-layout class is a class that: | |||
239 | // -- [...] has [...] at most one base class with non-static data | |||
240 | // members | |||
241 | if (BaseClassDecl->data().HasBasesWithNonStaticDataMembers || | |||
242 | BaseClassDecl->hasDirectFields()) { | |||
243 | if (data().HasBasesWithNonStaticDataMembers) | |||
244 | data().IsCXX11StandardLayout = false; | |||
245 | data().HasBasesWithNonStaticDataMembers = true; | |||
246 | } | |||
247 | ||||
248 | if (!BaseClassDecl->isEmpty()) { | |||
249 | // C++14 [meta.unary.prop]p4: | |||
250 | // T is a class type [...] with [...] no base class B for which | |||
251 | // is_empty<B>::value is false. | |||
252 | data().Empty = false; | |||
253 | } | |||
254 | ||||
255 | // C++1z [dcl.init.agg]p1: | |||
256 | // An aggregate is a class with [...] no private or protected base classes | |||
257 | if (Base->getAccessSpecifier() != AS_public) | |||
258 | data().Aggregate = false; | |||
259 | ||||
260 | // C++ [class.virtual]p1: | |||
261 | // A class that declares or inherits a virtual function is called a | |||
262 | // polymorphic class. | |||
263 | if (BaseClassDecl->isPolymorphic()) { | |||
264 | data().Polymorphic = true; | |||
265 | ||||
266 | // An aggregate is a class with [...] no virtual functions. | |||
267 | data().Aggregate = false; | |||
268 | } | |||
269 | ||||
270 | // C++0x [class]p7: | |||
271 | // A standard-layout class is a class that: [...] | |||
272 | // -- has no non-standard-layout base classes | |||
273 | if (!BaseClassDecl->isStandardLayout()) | |||
274 | data().IsStandardLayout = false; | |||
275 | if (!BaseClassDecl->isCXX11StandardLayout()) | |||
276 | data().IsCXX11StandardLayout = false; | |||
277 | ||||
278 | // Record if this base is the first non-literal field or base. | |||
279 | if (!hasNonLiteralTypeFieldsOrBases() && !BaseType->isLiteralType(C)) | |||
280 | data().HasNonLiteralTypeFieldsOrBases = true; | |||
281 | ||||
282 | // Now go through all virtual bases of this base and add them. | |||
283 | for (const auto &VBase : BaseClassDecl->vbases()) { | |||
284 | // Add this base if it's not already in the list. | |||
285 | if (SeenVBaseTypes.insert(C.getCanonicalType(VBase.getType())).second) { | |||
286 | VBases.push_back(&VBase); | |||
287 | ||||
288 | // C++11 [class.copy]p8: | |||
289 | // The implicitly-declared copy constructor for a class X will have | |||
290 | // the form 'X::X(const X&)' if each [...] virtual base class B of X | |||
291 | // has a copy constructor whose first parameter is of type | |||
292 | // 'const B&' or 'const volatile B&' [...] | |||
293 | if (CXXRecordDecl *VBaseDecl = VBase.getType()->getAsCXXRecordDecl()) | |||
294 | if (!VBaseDecl->hasCopyConstructorWithConstParam()) | |||
295 | data().ImplicitCopyConstructorCanHaveConstParamForVBase = false; | |||
296 | ||||
297 | // C++1z [dcl.init.agg]p1: | |||
298 | // An aggregate is a class with [...] no virtual base classes | |||
299 | data().Aggregate = false; | |||
300 | } | |||
301 | } | |||
302 | ||||
303 | if (Base->isVirtual()) { | |||
304 | // Add this base if it's not already in the list. | |||
305 | if (SeenVBaseTypes.insert(C.getCanonicalType(BaseType)).second) | |||
306 | VBases.push_back(Base); | |||
307 | ||||
308 | // C++14 [meta.unary.prop] is_empty: | |||
309 | // T is a class type, but not a union type, with ... no virtual base | |||
310 | // classes | |||
311 | data().Empty = false; | |||
312 | ||||
313 | // C++1z [dcl.init.agg]p1: | |||
314 | // An aggregate is a class with [...] no virtual base classes | |||
315 | data().Aggregate = false; | |||
316 | ||||
317 | // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25: | |||
318 | // A [default constructor, copy/move constructor, or copy/move assignment | |||
319 | // operator for a class X] is trivial [...] if: | |||
320 | // -- class X has [...] no virtual base classes | |||
321 | data().HasTrivialSpecialMembers &= SMF_Destructor; | |||
322 | data().HasTrivialSpecialMembersForCall &= SMF_Destructor; | |||
323 | ||||
324 | // C++0x [class]p7: | |||
325 | // A standard-layout class is a class that: [...] | |||
326 | // -- has [...] no virtual base classes | |||
327 | data().IsStandardLayout = false; | |||
328 | data().IsCXX11StandardLayout = false; | |||
329 | ||||
330 | // C++20 [dcl.constexpr]p3: | |||
331 | // In the definition of a constexpr function [...] | |||
332 | // -- if the function is a constructor or destructor, | |||
333 | // its class shall not have any virtual base classes | |||
334 | data().DefaultedDefaultConstructorIsConstexpr = false; | |||
335 | data().DefaultedDestructorIsConstexpr = false; | |||
336 | ||||
337 | // C++1z [class.copy]p8: | |||
338 | // The implicitly-declared copy constructor for a class X will have | |||
339 | // the form 'X::X(const X&)' if each potentially constructed subobject | |||
340 | // has a copy constructor whose first parameter is of type | |||
341 | // 'const B&' or 'const volatile B&' [...] | |||
342 | if (!BaseClassDecl->hasCopyConstructorWithConstParam()) | |||
343 | data().ImplicitCopyConstructorCanHaveConstParamForVBase = false; | |||
344 | } else { | |||
345 | // C++ [class.ctor]p5: | |||
346 | // A default constructor is trivial [...] if: | |||
347 | // -- all the direct base classes of its class have trivial default | |||
348 | // constructors. | |||
349 | if (!BaseClassDecl->hasTrivialDefaultConstructor()) | |||
350 | data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor; | |||
351 | ||||
352 | // C++0x [class.copy]p13: | |||
353 | // A copy/move constructor for class X is trivial if [...] | |||
354 | // [...] | |||
355 | // -- the constructor selected to copy/move each direct base class | |||
356 | // subobject is trivial, and | |||
357 | if (!BaseClassDecl->hasTrivialCopyConstructor()) | |||
358 | data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor; | |||
359 | ||||
360 | if (!BaseClassDecl->hasTrivialCopyConstructorForCall()) | |||
361 | data().HasTrivialSpecialMembersForCall &= ~SMF_CopyConstructor; | |||
362 | ||||
363 | // If the base class doesn't have a simple move constructor, we'll eagerly | |||
364 | // declare it and perform overload resolution to determine which function | |||
365 | // it actually calls. If it does have a simple move constructor, this | |||
366 | // check is correct. | |||
367 | if (!BaseClassDecl->hasTrivialMoveConstructor()) | |||
368 | data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor; | |||
369 | ||||
370 | if (!BaseClassDecl->hasTrivialMoveConstructorForCall()) | |||
371 | data().HasTrivialSpecialMembersForCall &= ~SMF_MoveConstructor; | |||
372 | ||||
373 | // C++0x [class.copy]p27: | |||
374 | // A copy/move assignment operator for class X is trivial if [...] | |||
375 | // [...] | |||
376 | // -- the assignment operator selected to copy/move each direct base | |||
377 | // class subobject is trivial, and | |||
378 | if (!BaseClassDecl->hasTrivialCopyAssignment()) | |||
379 | data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment; | |||
380 | // If the base class doesn't have a simple move assignment, we'll eagerly | |||
381 | // declare it and perform overload resolution to determine which function | |||
382 | // it actually calls. If it does have a simple move assignment, this | |||
383 | // check is correct. | |||
384 | if (!BaseClassDecl->hasTrivialMoveAssignment()) | |||
385 | data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment; | |||
386 | ||||
387 | // C++11 [class.ctor]p6: | |||
388 | // If that user-written default constructor would satisfy the | |||
389 | // requirements of a constexpr constructor, the implicitly-defined | |||
390 | // default constructor is constexpr. | |||
391 | if (!BaseClassDecl->hasConstexprDefaultConstructor()) | |||
392 | data().DefaultedDefaultConstructorIsConstexpr = false; | |||
393 | ||||
394 | // C++1z [class.copy]p8: | |||
395 | // The implicitly-declared copy constructor for a class X will have | |||
396 | // the form 'X::X(const X&)' if each potentially constructed subobject | |||
397 | // has a copy constructor whose first parameter is of type | |||
398 | // 'const B&' or 'const volatile B&' [...] | |||
399 | if (!BaseClassDecl->hasCopyConstructorWithConstParam()) | |||
400 | data().ImplicitCopyConstructorCanHaveConstParamForNonVBase = false; | |||
401 | } | |||
402 | ||||
403 | // C++ [class.ctor]p3: | |||
404 | // A destructor is trivial if all the direct base classes of its class | |||
405 | // have trivial destructors. | |||
406 | if (!BaseClassDecl->hasTrivialDestructor()) | |||
407 | data().HasTrivialSpecialMembers &= ~SMF_Destructor; | |||
408 | ||||
409 | if (!BaseClassDecl->hasTrivialDestructorForCall()) | |||
410 | data().HasTrivialSpecialMembersForCall &= ~SMF_Destructor; | |||
411 | ||||
412 | if (!BaseClassDecl->hasIrrelevantDestructor()) | |||
413 | data().HasIrrelevantDestructor = false; | |||
414 | ||||
415 | // C++11 [class.copy]p18: | |||
416 | // The implicitly-declared copy assignment operator for a class X will | |||
417 | // have the form 'X& X::operator=(const X&)' if each direct base class B | |||
418 | // of X has a copy assignment operator whose parameter is of type 'const | |||
419 | // B&', 'const volatile B&', or 'B' [...] | |||
420 | if (!BaseClassDecl->hasCopyAssignmentWithConstParam()) | |||
421 | data().ImplicitCopyAssignmentHasConstParam = false; | |||
422 | ||||
423 | // A class has an Objective-C object member if... or any of its bases | |||
424 | // has an Objective-C object member. | |||
425 | if (BaseClassDecl->hasObjectMember()) | |||
426 | setHasObjectMember(true); | |||
427 | ||||
428 | if (BaseClassDecl->hasVolatileMember()) | |||
429 | setHasVolatileMember(true); | |||
430 | ||||
431 | if (BaseClassDecl->getArgPassingRestrictions() == | |||
432 | RecordDecl::APK_CanNeverPassInRegs) | |||
433 | setArgPassingRestrictions(RecordDecl::APK_CanNeverPassInRegs); | |||
434 | ||||
435 | // Keep track of the presence of mutable fields. | |||
436 | if (BaseClassDecl->hasMutableFields()) { | |||
437 | data().HasMutableFields = true; | |||
438 | data().NeedOverloadResolutionForCopyConstructor = true; | |||
439 | } | |||
440 | ||||
441 | if (BaseClassDecl->hasUninitializedReferenceMember()) | |||
442 | data().HasUninitializedReferenceMember = true; | |||
443 | ||||
444 | if (!BaseClassDecl->allowConstDefaultInit()) | |||
445 | data().HasUninitializedFields = true; | |||
446 | ||||
447 | addedClassSubobject(BaseClassDecl); | |||
448 | } | |||
449 | ||||
450 | // C++2a [class]p7: | |||
451 | // A class S is a standard-layout class if it: | |||
452 | // -- has at most one base class subobject of any given type | |||
453 | // | |||
454 | // Note that we only need to check this for classes with more than one base | |||
455 | // class. If there's only one base class, and it's standard layout, then | |||
456 | // we know there are no repeated base classes. | |||
457 | if (data().IsStandardLayout && NumBases > 1 && hasRepeatedBaseClass(this)) | |||
458 | data().IsStandardLayout = false; | |||
459 | ||||
460 | if (VBases.empty()) { | |||
461 | data().IsParsingBaseSpecifiers = false; | |||
462 | return; | |||
463 | } | |||
464 | ||||
465 | // Create base specifier for any direct or indirect virtual bases. | |||
466 | data().VBases = new (C) CXXBaseSpecifier[VBases.size()]; | |||
467 | data().NumVBases = VBases.size(); | |||
468 | for (int I = 0, E = VBases.size(); I != E; ++I) { | |||
469 | QualType Type = VBases[I]->getType(); | |||
470 | if (!Type->isDependentType()) | |||
471 | addedClassSubobject(Type->getAsCXXRecordDecl()); | |||
472 | data().getVBases()[I] = *VBases[I]; | |||
473 | } | |||
474 | ||||
475 | data().IsParsingBaseSpecifiers = false; | |||
476 | } | |||
477 | ||||
478 | unsigned CXXRecordDecl::getODRHash() const { | |||
479 | assert(hasDefinition() && "ODRHash only for records with definitions")((hasDefinition() && "ODRHash only for records with definitions" ) ? static_cast<void> (0) : __assert_fail ("hasDefinition() && \"ODRHash only for records with definitions\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 479, __PRETTY_FUNCTION__)); | |||
480 | ||||
481 | // Previously calculated hash is stored in DefinitionData. | |||
482 | if (DefinitionData->HasODRHash) | |||
483 | return DefinitionData->ODRHash; | |||
484 | ||||
485 | // Only calculate hash on first call of getODRHash per record. | |||
486 | ODRHash Hash; | |||
487 | Hash.AddCXXRecordDecl(getDefinition()); | |||
488 | DefinitionData->HasODRHash = true; | |||
489 | DefinitionData->ODRHash = Hash.CalculateHash(); | |||
490 | ||||
491 | return DefinitionData->ODRHash; | |||
492 | } | |||
493 | ||||
494 | void CXXRecordDecl::addedClassSubobject(CXXRecordDecl *Subobj) { | |||
495 | // C++11 [class.copy]p11: | |||
496 | // A defaulted copy/move constructor for a class X is defined as | |||
497 | // deleted if X has: | |||
498 | // -- a direct or virtual base class B that cannot be copied/moved [...] | |||
499 | // -- a non-static data member of class type M (or array thereof) | |||
500 | // that cannot be copied or moved [...] | |||
501 | if (!Subobj->hasSimpleCopyConstructor()) | |||
502 | data().NeedOverloadResolutionForCopyConstructor = true; | |||
503 | if (!Subobj->hasSimpleMoveConstructor()) | |||
504 | data().NeedOverloadResolutionForMoveConstructor = true; | |||
505 | ||||
506 | // C++11 [class.copy]p23: | |||
507 | // A defaulted copy/move assignment operator for a class X is defined as | |||
508 | // deleted if X has: | |||
509 | // -- a direct or virtual base class B that cannot be copied/moved [...] | |||
510 | // -- a non-static data member of class type M (or array thereof) | |||
511 | // that cannot be copied or moved [...] | |||
512 | if (!Subobj->hasSimpleMoveAssignment()) | |||
513 | data().NeedOverloadResolutionForMoveAssignment = true; | |||
514 | ||||
515 | // C++11 [class.ctor]p5, C++11 [class.copy]p11, C++11 [class.dtor]p5: | |||
516 | // A defaulted [ctor or dtor] for a class X is defined as | |||
517 | // deleted if X has: | |||
518 | // -- any direct or virtual base class [...] has a type with a destructor | |||
519 | // that is deleted or inaccessible from the defaulted [ctor or dtor]. | |||
520 | // -- any non-static data member has a type with a destructor | |||
521 | // that is deleted or inaccessible from the defaulted [ctor or dtor]. | |||
522 | if (!Subobj->hasSimpleDestructor()) { | |||
523 | data().NeedOverloadResolutionForCopyConstructor = true; | |||
524 | data().NeedOverloadResolutionForMoveConstructor = true; | |||
525 | data().NeedOverloadResolutionForDestructor = true; | |||
526 | } | |||
527 | ||||
528 | // C++2a [dcl.constexpr]p4: | |||
529 | // The definition of a constexpr destructor [shall] satisfy the | |||
530 | // following requirement: | |||
531 | // -- for every subobject of class type or (possibly multi-dimensional) | |||
532 | // array thereof, that class type shall have a constexpr destructor | |||
533 | if (!Subobj->hasConstexprDestructor()) | |||
534 | data().DefaultedDestructorIsConstexpr = false; | |||
535 | } | |||
536 | ||||
537 | bool CXXRecordDecl::hasConstexprDestructor() const { | |||
538 | auto *Dtor = getDestructor(); | |||
539 | return Dtor ? Dtor->isConstexpr() : defaultedDestructorIsConstexpr(); | |||
540 | } | |||
541 | ||||
542 | bool CXXRecordDecl::hasAnyDependentBases() const { | |||
543 | if (!isDependentContext()) | |||
544 | return false; | |||
545 | ||||
546 | return !forallBases([](const CXXRecordDecl *) { return true; }); | |||
547 | } | |||
548 | ||||
549 | bool CXXRecordDecl::isTriviallyCopyable() const { | |||
550 | // C++0x [class]p5: | |||
551 | // A trivially copyable class is a class that: | |||
552 | // -- has no non-trivial copy constructors, | |||
553 | if (hasNonTrivialCopyConstructor()) return false; | |||
554 | // -- has no non-trivial move constructors, | |||
555 | if (hasNonTrivialMoveConstructor()) return false; | |||
556 | // -- has no non-trivial copy assignment operators, | |||
557 | if (hasNonTrivialCopyAssignment()) return false; | |||
558 | // -- has no non-trivial move assignment operators, and | |||
559 | if (hasNonTrivialMoveAssignment()) return false; | |||
560 | // -- has a trivial destructor. | |||
561 | if (!hasTrivialDestructor()) return false; | |||
562 | ||||
563 | return true; | |||
564 | } | |||
565 | ||||
566 | void CXXRecordDecl::markedVirtualFunctionPure() { | |||
567 | // C++ [class.abstract]p2: | |||
568 | // A class is abstract if it has at least one pure virtual function. | |||
569 | data().Abstract = true; | |||
570 | } | |||
571 | ||||
572 | bool CXXRecordDecl::hasSubobjectAtOffsetZeroOfEmptyBaseType( | |||
573 | ASTContext &Ctx, const CXXRecordDecl *XFirst) { | |||
574 | if (!getNumBases()) | |||
575 | return false; | |||
576 | ||||
577 | llvm::SmallPtrSet<const CXXRecordDecl*, 8> Bases; | |||
578 | llvm::SmallPtrSet<const CXXRecordDecl*, 8> M; | |||
579 | SmallVector<const CXXRecordDecl*, 8> WorkList; | |||
580 | ||||
581 | // Visit a type that we have determined is an element of M(S). | |||
582 | auto Visit = [&](const CXXRecordDecl *RD) -> bool { | |||
583 | RD = RD->getCanonicalDecl(); | |||
584 | ||||
585 | // C++2a [class]p8: | |||
586 | // A class S is a standard-layout class if it [...] has no element of the | |||
587 | // set M(S) of types as a base class. | |||
588 | // | |||
589 | // If we find a subobject of an empty type, it might also be a base class, | |||
590 | // so we'll need to walk the base classes to check. | |||
591 | if (!RD->data().HasBasesWithFields) { | |||
592 | // Walk the bases the first time, stopping if we find the type. Build a | |||
593 | // set of them so we don't need to walk them again. | |||
594 | if (Bases.empty()) { | |||
595 | bool RDIsBase = !forallBases([&](const CXXRecordDecl *Base) -> bool { | |||
596 | Base = Base->getCanonicalDecl(); | |||
597 | if (RD == Base) | |||
598 | return false; | |||
599 | Bases.insert(Base); | |||
600 | return true; | |||
601 | }); | |||
602 | if (RDIsBase) | |||
603 | return true; | |||
604 | } else { | |||
605 | if (Bases.count(RD)) | |||
606 | return true; | |||
607 | } | |||
608 | } | |||
609 | ||||
610 | if (M.insert(RD).second) | |||
611 | WorkList.push_back(RD); | |||
612 | return false; | |||
613 | }; | |||
614 | ||||
615 | if (Visit(XFirst)) | |||
616 | return true; | |||
617 | ||||
618 | while (!WorkList.empty()) { | |||
619 | const CXXRecordDecl *X = WorkList.pop_back_val(); | |||
620 | ||||
621 | // FIXME: We don't check the bases of X. That matches the standard, but | |||
622 | // that sure looks like a wording bug. | |||
623 | ||||
624 | // -- If X is a non-union class type with a non-static data member | |||
625 | // [recurse to each field] that is either of zero size or is the | |||
626 | // first non-static data member of X | |||
627 | // -- If X is a union type, [recurse to union members] | |||
628 | bool IsFirstField = true; | |||
629 | for (auto *FD : X->fields()) { | |||
630 | // FIXME: Should we really care about the type of the first non-static | |||
631 | // data member of a non-union if there are preceding unnamed bit-fields? | |||
632 | if (FD->isUnnamedBitfield()) | |||
633 | continue; | |||
634 | ||||
635 | if (!IsFirstField && !FD->isZeroSize(Ctx)) | |||
636 | continue; | |||
637 | ||||
638 | // -- If X is n array type, [visit the element type] | |||
639 | QualType T = Ctx.getBaseElementType(FD->getType()); | |||
640 | if (auto *RD = T->getAsCXXRecordDecl()) | |||
641 | if (Visit(RD)) | |||
642 | return true; | |||
643 | ||||
644 | if (!X->isUnion()) | |||
645 | IsFirstField = false; | |||
646 | } | |||
647 | } | |||
648 | ||||
649 | return false; | |||
650 | } | |||
651 | ||||
652 | bool CXXRecordDecl::lambdaIsDefaultConstructibleAndAssignable() const { | |||
653 | assert(isLambda() && "not a lambda")((isLambda() && "not a lambda") ? static_cast<void > (0) : __assert_fail ("isLambda() && \"not a lambda\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 653, __PRETTY_FUNCTION__)); | |||
654 | ||||
655 | // C++2a [expr.prim.lambda.capture]p11: | |||
656 | // The closure type associated with a lambda-expression has no default | |||
657 | // constructor if the lambda-expression has a lambda-capture and a | |||
658 | // defaulted default constructor otherwise. It has a deleted copy | |||
659 | // assignment operator if the lambda-expression has a lambda-capture and | |||
660 | // defaulted copy and move assignment operators otherwise. | |||
661 | // | |||
662 | // C++17 [expr.prim.lambda]p21: | |||
663 | // The closure type associated with a lambda-expression has no default | |||
664 | // constructor and a deleted copy assignment operator. | |||
665 | if (getLambdaCaptureDefault() != LCD_None || | |||
666 | getLambdaData().NumCaptures != 0) | |||
667 | return false; | |||
668 | return getASTContext().getLangOpts().CPlusPlus2a; | |||
669 | } | |||
670 | ||||
671 | void CXXRecordDecl::addedMember(Decl *D) { | |||
672 | if (!D->isImplicit() && | |||
673 | !isa<FieldDecl>(D) && | |||
674 | !isa<IndirectFieldDecl>(D) && | |||
675 | (!isa<TagDecl>(D) || cast<TagDecl>(D)->getTagKind() == TTK_Class || | |||
676 | cast<TagDecl>(D)->getTagKind() == TTK_Interface)) | |||
677 | data().HasOnlyCMembers = false; | |||
678 | ||||
679 | // Ignore friends and invalid declarations. | |||
680 | if (D->getFriendObjectKind() || D->isInvalidDecl()) | |||
681 | return; | |||
682 | ||||
683 | auto *FunTmpl = dyn_cast<FunctionTemplateDecl>(D); | |||
684 | if (FunTmpl) | |||
685 | D = FunTmpl->getTemplatedDecl(); | |||
686 | ||||
687 | // FIXME: Pass NamedDecl* to addedMember? | |||
688 | Decl *DUnderlying = D; | |||
689 | if (auto *ND = dyn_cast<NamedDecl>(DUnderlying)) { | |||
690 | DUnderlying = ND->getUnderlyingDecl(); | |||
691 | if (auto *UnderlyingFunTmpl = dyn_cast<FunctionTemplateDecl>(DUnderlying)) | |||
692 | DUnderlying = UnderlyingFunTmpl->getTemplatedDecl(); | |||
693 | } | |||
694 | ||||
695 | if (const auto *Method = dyn_cast<CXXMethodDecl>(D)) { | |||
696 | if (Method->isVirtual()) { | |||
697 | // C++ [dcl.init.aggr]p1: | |||
698 | // An aggregate is an array or a class with [...] no virtual functions. | |||
699 | data().Aggregate = false; | |||
700 | ||||
701 | // C++ [class]p4: | |||
702 | // A POD-struct is an aggregate class... | |||
703 | data().PlainOldData = false; | |||
704 | ||||
705 | // C++14 [meta.unary.prop]p4: | |||
706 | // T is a class type [...] with [...] no virtual member functions... | |||
707 | data().Empty = false; | |||
708 | ||||
709 | // C++ [class.virtual]p1: | |||
710 | // A class that declares or inherits a virtual function is called a | |||
711 | // polymorphic class. | |||
712 | data().Polymorphic = true; | |||
713 | ||||
714 | // C++11 [class.ctor]p5, C++11 [class.copy]p12, C++11 [class.copy]p25: | |||
715 | // A [default constructor, copy/move constructor, or copy/move | |||
716 | // assignment operator for a class X] is trivial [...] if: | |||
717 | // -- class X has no virtual functions [...] | |||
718 | data().HasTrivialSpecialMembers &= SMF_Destructor; | |||
719 | data().HasTrivialSpecialMembersForCall &= SMF_Destructor; | |||
720 | ||||
721 | // C++0x [class]p7: | |||
722 | // A standard-layout class is a class that: [...] | |||
723 | // -- has no virtual functions | |||
724 | data().IsStandardLayout = false; | |||
725 | data().IsCXX11StandardLayout = false; | |||
726 | } | |||
727 | } | |||
728 | ||||
729 | // Notify the listener if an implicit member was added after the definition | |||
730 | // was completed. | |||
731 | if (!isBeingDefined() && D->isImplicit()) | |||
732 | if (ASTMutationListener *L = getASTMutationListener()) | |||
733 | L->AddedCXXImplicitMember(data().Definition, D); | |||
734 | ||||
735 | // The kind of special member this declaration is, if any. | |||
736 | unsigned SMKind = 0; | |||
737 | ||||
738 | // Handle constructors. | |||
739 | if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(D)) { | |||
740 | if (!Constructor->isImplicit()) { | |||
741 | // Note that we have a user-declared constructor. | |||
742 | data().UserDeclaredConstructor = true; | |||
743 | ||||
744 | // C++ [class]p4: | |||
745 | // A POD-struct is an aggregate class [...] | |||
746 | // Since the POD bit is meant to be C++03 POD-ness, clear it even if the | |||
747 | // type is technically an aggregate in C++0x since it wouldn't be in 03. | |||
748 | data().PlainOldData = false; | |||
749 | } | |||
750 | ||||
751 | if (Constructor->isDefaultConstructor()) { | |||
752 | SMKind |= SMF_DefaultConstructor; | |||
753 | ||||
754 | if (Constructor->isUserProvided()) | |||
755 | data().UserProvidedDefaultConstructor = true; | |||
756 | if (Constructor->isConstexpr()) | |||
757 | data().HasConstexprDefaultConstructor = true; | |||
758 | if (Constructor->isDefaulted()) | |||
759 | data().HasDefaultedDefaultConstructor = true; | |||
760 | } | |||
761 | ||||
762 | if (!FunTmpl) { | |||
763 | unsigned Quals; | |||
764 | if (Constructor->isCopyConstructor(Quals)) { | |||
765 | SMKind |= SMF_CopyConstructor; | |||
766 | ||||
767 | if (Quals & Qualifiers::Const) | |||
768 | data().HasDeclaredCopyConstructorWithConstParam = true; | |||
769 | } else if (Constructor->isMoveConstructor()) | |||
770 | SMKind |= SMF_MoveConstructor; | |||
771 | } | |||
772 | ||||
773 | // C++11 [dcl.init.aggr]p1: DR1518 | |||
774 | // An aggregate is an array or a class with no user-provided [or] | |||
775 | // explicit [...] constructors | |||
776 | // C++20 [dcl.init.aggr]p1: | |||
777 | // An aggregate is an array or a class with no user-declared [...] | |||
778 | // constructors | |||
779 | if (getASTContext().getLangOpts().CPlusPlus2a | |||
780 | ? !Constructor->isImplicit() | |||
781 | : (Constructor->isUserProvided() || Constructor->isExplicit())) | |||
782 | data().Aggregate = false; | |||
783 | } | |||
784 | ||||
785 | // Handle constructors, including those inherited from base classes. | |||
786 | if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(DUnderlying)) { | |||
787 | // Record if we see any constexpr constructors which are neither copy | |||
788 | // nor move constructors. | |||
789 | // C++1z [basic.types]p10: | |||
790 | // [...] has at least one constexpr constructor or constructor template | |||
791 | // (possibly inherited from a base class) that is not a copy or move | |||
792 | // constructor [...] | |||
793 | if (Constructor->isConstexpr() && !Constructor->isCopyOrMoveConstructor()) | |||
794 | data().HasConstexprNonCopyMoveConstructor = true; | |||
795 | } | |||
796 | ||||
797 | // Handle destructors. | |||
798 | if (const auto *DD = dyn_cast<CXXDestructorDecl>(D)) { | |||
799 | SMKind |= SMF_Destructor; | |||
800 | ||||
801 | if (DD->isUserProvided()) | |||
802 | data().HasIrrelevantDestructor = false; | |||
803 | // If the destructor is explicitly defaulted and not trivial or not public | |||
804 | // or if the destructor is deleted, we clear HasIrrelevantDestructor in | |||
805 | // finishedDefaultedOrDeletedMember. | |||
806 | ||||
807 | // C++11 [class.dtor]p5: | |||
808 | // A destructor is trivial if [...] the destructor is not virtual. | |||
809 | if (DD->isVirtual()) { | |||
810 | data().HasTrivialSpecialMembers &= ~SMF_Destructor; | |||
811 | data().HasTrivialSpecialMembersForCall &= ~SMF_Destructor; | |||
812 | } | |||
813 | } | |||
814 | ||||
815 | // Handle member functions. | |||
816 | if (const auto *Method = dyn_cast<CXXMethodDecl>(D)) { | |||
817 | if (Method->isCopyAssignmentOperator()) { | |||
818 | SMKind |= SMF_CopyAssignment; | |||
819 | ||||
820 | const auto *ParamTy = | |||
821 | Method->getParamDecl(0)->getType()->getAs<ReferenceType>(); | |||
822 | if (!ParamTy || ParamTy->getPointeeType().isConstQualified()) | |||
823 | data().HasDeclaredCopyAssignmentWithConstParam = true; | |||
824 | } | |||
825 | ||||
826 | if (Method->isMoveAssignmentOperator()) | |||
827 | SMKind |= SMF_MoveAssignment; | |||
828 | ||||
829 | // Keep the list of conversion functions up-to-date. | |||
830 | if (auto *Conversion = dyn_cast<CXXConversionDecl>(D)) { | |||
831 | // FIXME: We use the 'unsafe' accessor for the access specifier here, | |||
832 | // because Sema may not have set it yet. That's really just a misdesign | |||
833 | // in Sema. However, LLDB *will* have set the access specifier correctly, | |||
834 | // and adds declarations after the class is technically completed, | |||
835 | // so completeDefinition()'s overriding of the access specifiers doesn't | |||
836 | // work. | |||
837 | AccessSpecifier AS = Conversion->getAccessUnsafe(); | |||
838 | ||||
839 | if (Conversion->getPrimaryTemplate()) { | |||
840 | // We don't record specializations. | |||
841 | } else { | |||
842 | ASTContext &Ctx = getASTContext(); | |||
843 | ASTUnresolvedSet &Conversions = data().Conversions.get(Ctx); | |||
844 | NamedDecl *Primary = | |||
845 | FunTmpl ? cast<NamedDecl>(FunTmpl) : cast<NamedDecl>(Conversion); | |||
846 | if (Primary->getPreviousDecl()) | |||
847 | Conversions.replace(cast<NamedDecl>(Primary->getPreviousDecl()), | |||
848 | Primary, AS); | |||
849 | else | |||
850 | Conversions.addDecl(Ctx, Primary, AS); | |||
851 | } | |||
852 | } | |||
853 | ||||
854 | if (SMKind) { | |||
855 | // If this is the first declaration of a special member, we no longer have | |||
856 | // an implicit trivial special member. | |||
857 | data().HasTrivialSpecialMembers &= | |||
858 | data().DeclaredSpecialMembers | ~SMKind; | |||
859 | data().HasTrivialSpecialMembersForCall &= | |||
860 | data().DeclaredSpecialMembers | ~SMKind; | |||
861 | ||||
862 | if (!Method->isImplicit() && !Method->isUserProvided()) { | |||
863 | // This method is user-declared but not user-provided. We can't work out | |||
864 | // whether it's trivial yet (not until we get to the end of the class). | |||
865 | // We'll handle this method in finishedDefaultedOrDeletedMember. | |||
866 | } else if (Method->isTrivial()) { | |||
867 | data().HasTrivialSpecialMembers |= SMKind; | |||
868 | data().HasTrivialSpecialMembersForCall |= SMKind; | |||
869 | } else if (Method->isTrivialForCall()) { | |||
870 | data().HasTrivialSpecialMembersForCall |= SMKind; | |||
871 | data().DeclaredNonTrivialSpecialMembers |= SMKind; | |||
872 | } else { | |||
873 | data().DeclaredNonTrivialSpecialMembers |= SMKind; | |||
874 | // If this is a user-provided function, do not set | |||
875 | // DeclaredNonTrivialSpecialMembersForCall here since we don't know | |||
876 | // yet whether the method would be considered non-trivial for the | |||
877 | // purpose of calls (attribute "trivial_abi" can be dropped from the | |||
878 | // class later, which can change the special method's triviality). | |||
879 | if (!Method->isUserProvided()) | |||
880 | data().DeclaredNonTrivialSpecialMembersForCall |= SMKind; | |||
881 | } | |||
882 | ||||
883 | // Note when we have declared a declared special member, and suppress the | |||
884 | // implicit declaration of this special member. | |||
885 | data().DeclaredSpecialMembers |= SMKind; | |||
886 | ||||
887 | if (!Method->isImplicit()) { | |||
888 | data().UserDeclaredSpecialMembers |= SMKind; | |||
889 | ||||
890 | // C++03 [class]p4: | |||
891 | // A POD-struct is an aggregate class that has [...] no user-defined | |||
892 | // copy assignment operator and no user-defined destructor. | |||
893 | // | |||
894 | // Since the POD bit is meant to be C++03 POD-ness, and in C++03, | |||
895 | // aggregates could not have any constructors, clear it even for an | |||
896 | // explicitly defaulted or deleted constructor. | |||
897 | // type is technically an aggregate in C++0x since it wouldn't be in 03. | |||
898 | // | |||
899 | // Also, a user-declared move assignment operator makes a class non-POD. | |||
900 | // This is an extension in C++03. | |||
901 | data().PlainOldData = false; | |||
902 | } | |||
903 | } | |||
904 | ||||
905 | return; | |||
906 | } | |||
907 | ||||
908 | // Handle non-static data members. | |||
909 | if (const auto *Field = dyn_cast<FieldDecl>(D)) { | |||
910 | ASTContext &Context = getASTContext(); | |||
911 | ||||
912 | // C++2a [class]p7: | |||
913 | // A standard-layout class is a class that: | |||
914 | // [...] | |||
915 | // -- has all non-static data members and bit-fields in the class and | |||
916 | // its base classes first declared in the same class | |||
917 | if (data().HasBasesWithFields) | |||
918 | data().IsStandardLayout = false; | |||
919 | ||||
920 | // C++ [class.bit]p2: | |||
921 | // A declaration for a bit-field that omits the identifier declares an | |||
922 | // unnamed bit-field. Unnamed bit-fields are not members and cannot be | |||
923 | // initialized. | |||
924 | if (Field->isUnnamedBitfield()) { | |||
925 | // C++ [meta.unary.prop]p4: [LWG2358] | |||
926 | // T is a class type [...] with [...] no unnamed bit-fields of non-zero | |||
927 | // length | |||
928 | if (data().Empty && !Field->isZeroLengthBitField(Context) && | |||
929 | Context.getLangOpts().getClangABICompat() > | |||
930 | LangOptions::ClangABI::Ver6) | |||
931 | data().Empty = false; | |||
932 | return; | |||
933 | } | |||
934 | ||||
935 | // C++11 [class]p7: | |||
936 | // A standard-layout class is a class that: | |||
937 | // -- either has no non-static data members in the most derived class | |||
938 | // [...] or has no base classes with non-static data members | |||
939 | if (data().HasBasesWithNonStaticDataMembers) | |||
940 | data().IsCXX11StandardLayout = false; | |||
941 | ||||
942 | // C++ [dcl.init.aggr]p1: | |||
943 | // An aggregate is an array or a class (clause 9) with [...] no | |||
944 | // private or protected non-static data members (clause 11). | |||
945 | // | |||
946 | // A POD must be an aggregate. | |||
947 | if (D->getAccess() == AS_private || D->getAccess() == AS_protected) { | |||
948 | data().Aggregate = false; | |||
949 | data().PlainOldData = false; | |||
950 | } | |||
951 | ||||
952 | // Track whether this is the first field. We use this when checking | |||
953 | // whether the class is standard-layout below. | |||
954 | bool IsFirstField = !data().HasPrivateFields && | |||
955 | !data().HasProtectedFields && !data().HasPublicFields; | |||
956 | ||||
957 | // C++0x [class]p7: | |||
958 | // A standard-layout class is a class that: | |||
959 | // [...] | |||
960 | // -- has the same access control for all non-static data members, | |||
961 | switch (D->getAccess()) { | |||
962 | case AS_private: data().HasPrivateFields = true; break; | |||
963 | case AS_protected: data().HasProtectedFields = true; break; | |||
964 | case AS_public: data().HasPublicFields = true; break; | |||
965 | case AS_none: llvm_unreachable("Invalid access specifier")::llvm::llvm_unreachable_internal("Invalid access specifier", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 965); | |||
966 | }; | |||
967 | if ((data().HasPrivateFields + data().HasProtectedFields + | |||
968 | data().HasPublicFields) > 1) { | |||
969 | data().IsStandardLayout = false; | |||
970 | data().IsCXX11StandardLayout = false; | |||
971 | } | |||
972 | ||||
973 | // Keep track of the presence of mutable fields. | |||
974 | if (Field->isMutable()) { | |||
975 | data().HasMutableFields = true; | |||
976 | data().NeedOverloadResolutionForCopyConstructor = true; | |||
977 | } | |||
978 | ||||
979 | // C++11 [class.union]p8, DR1460: | |||
980 | // If X is a union, a non-static data member of X that is not an anonymous | |||
981 | // union is a variant member of X. | |||
982 | if (isUnion() && !Field->isAnonymousStructOrUnion()) | |||
983 | data().HasVariantMembers = true; | |||
984 | ||||
985 | // C++0x [class]p9: | |||
986 | // A POD struct is a class that is both a trivial class and a | |||
987 | // standard-layout class, and has no non-static data members of type | |||
988 | // non-POD struct, non-POD union (or array of such types). | |||
989 | // | |||
990 | // Automatic Reference Counting: the presence of a member of Objective-C pointer type | |||
991 | // that does not explicitly have no lifetime makes the class a non-POD. | |||
992 | QualType T = Context.getBaseElementType(Field->getType()); | |||
993 | if (T->isObjCRetainableType() || T.isObjCGCStrong()) { | |||
994 | if (T.hasNonTrivialObjCLifetime()) { | |||
995 | // Objective-C Automatic Reference Counting: | |||
996 | // If a class has a non-static data member of Objective-C pointer | |||
997 | // type (or array thereof), it is a non-POD type and its | |||
998 | // default constructor (if any), copy constructor, move constructor, | |||
999 | // copy assignment operator, move assignment operator, and destructor are | |||
1000 | // non-trivial. | |||
1001 | setHasObjectMember(true); | |||
1002 | struct DefinitionData &Data = data(); | |||
1003 | Data.PlainOldData = false; | |||
1004 | Data.HasTrivialSpecialMembers = 0; | |||
1005 | ||||
1006 | // __strong or __weak fields do not make special functions non-trivial | |||
1007 | // for the purpose of calls. | |||
1008 | Qualifiers::ObjCLifetime LT = T.getQualifiers().getObjCLifetime(); | |||
1009 | if (LT != Qualifiers::OCL_Strong && LT != Qualifiers::OCL_Weak) | |||
1010 | data().HasTrivialSpecialMembersForCall = 0; | |||
1011 | ||||
1012 | // Structs with __weak fields should never be passed directly. | |||
1013 | if (LT == Qualifiers::OCL_Weak) | |||
1014 | setArgPassingRestrictions(RecordDecl::APK_CanNeverPassInRegs); | |||
1015 | ||||
1016 | Data.HasIrrelevantDestructor = false; | |||
1017 | ||||
1018 | if (isUnion()) { | |||
1019 | data().DefaultedCopyConstructorIsDeleted = true; | |||
1020 | data().DefaultedMoveConstructorIsDeleted = true; | |||
1021 | data().DefaultedMoveAssignmentIsDeleted = true; | |||
1022 | data().DefaultedDestructorIsDeleted = true; | |||
1023 | data().NeedOverloadResolutionForCopyConstructor = true; | |||
1024 | data().NeedOverloadResolutionForMoveConstructor = true; | |||
1025 | data().NeedOverloadResolutionForMoveAssignment = true; | |||
1026 | data().NeedOverloadResolutionForDestructor = true; | |||
1027 | } | |||
1028 | } else if (!Context.getLangOpts().ObjCAutoRefCount) { | |||
1029 | setHasObjectMember(true); | |||
1030 | } | |||
1031 | } else if (!T.isCXX98PODType(Context)) | |||
1032 | data().PlainOldData = false; | |||
1033 | ||||
1034 | if (T->isReferenceType()) { | |||
1035 | if (!Field->hasInClassInitializer()) | |||
1036 | data().HasUninitializedReferenceMember = true; | |||
1037 | ||||
1038 | // C++0x [class]p7: | |||
1039 | // A standard-layout class is a class that: | |||
1040 | // -- has no non-static data members of type [...] reference, | |||
1041 | data().IsStandardLayout = false; | |||
1042 | data().IsCXX11StandardLayout = false; | |||
1043 | ||||
1044 | // C++1z [class.copy.ctor]p10: | |||
1045 | // A defaulted copy constructor for a class X is defined as deleted if X has: | |||
1046 | // -- a non-static data member of rvalue reference type | |||
1047 | if (T->isRValueReferenceType()) | |||
1048 | data().DefaultedCopyConstructorIsDeleted = true; | |||
1049 | } | |||
1050 | ||||
1051 | if (!Field->hasInClassInitializer() && !Field->isMutable()) { | |||
1052 | if (CXXRecordDecl *FieldType = T->getAsCXXRecordDecl()) { | |||
1053 | if (FieldType->hasDefinition() && !FieldType->allowConstDefaultInit()) | |||
1054 | data().HasUninitializedFields = true; | |||
1055 | } else { | |||
1056 | data().HasUninitializedFields = true; | |||
1057 | } | |||
1058 | } | |||
1059 | ||||
1060 | // Record if this field is the first non-literal or volatile field or base. | |||
1061 | if (!T->isLiteralType(Context) || T.isVolatileQualified()) | |||
1062 | data().HasNonLiteralTypeFieldsOrBases = true; | |||
1063 | ||||
1064 | if (Field->hasInClassInitializer() || | |||
1065 | (Field->isAnonymousStructOrUnion() && | |||
1066 | Field->getType()->getAsCXXRecordDecl()->hasInClassInitializer())) { | |||
1067 | data().HasInClassInitializer = true; | |||
1068 | ||||
1069 | // C++11 [class]p5: | |||
1070 | // A default constructor is trivial if [...] no non-static data member | |||
1071 | // of its class has a brace-or-equal-initializer. | |||
1072 | data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor; | |||
1073 | ||||
1074 | // C++11 [dcl.init.aggr]p1: | |||
1075 | // An aggregate is a [...] class with [...] no | |||
1076 | // brace-or-equal-initializers for non-static data members. | |||
1077 | // | |||
1078 | // This rule was removed in C++14. | |||
1079 | if (!getASTContext().getLangOpts().CPlusPlus14) | |||
1080 | data().Aggregate = false; | |||
1081 | ||||
1082 | // C++11 [class]p10: | |||
1083 | // A POD struct is [...] a trivial class. | |||
1084 | data().PlainOldData = false; | |||
1085 | } | |||
1086 | ||||
1087 | // C++11 [class.copy]p23: | |||
1088 | // A defaulted copy/move assignment operator for a class X is defined | |||
1089 | // as deleted if X has: | |||
1090 | // -- a non-static data member of reference type | |||
1091 | if (T->isReferenceType()) | |||
1092 | data().DefaultedMoveAssignmentIsDeleted = true; | |||
1093 | ||||
1094 | // Bitfields of length 0 are also zero-sized, but we already bailed out for | |||
1095 | // those because they are always unnamed. | |||
1096 | bool IsZeroSize = Field->isZeroSize(Context); | |||
1097 | ||||
1098 | if (const auto *RecordTy = T->getAs<RecordType>()) { | |||
1099 | auto *FieldRec = cast<CXXRecordDecl>(RecordTy->getDecl()); | |||
1100 | if (FieldRec->getDefinition()) { | |||
1101 | addedClassSubobject(FieldRec); | |||
1102 | ||||
1103 | // We may need to perform overload resolution to determine whether a | |||
1104 | // field can be moved if it's const or volatile qualified. | |||
1105 | if (T.getCVRQualifiers() & (Qualifiers::Const | Qualifiers::Volatile)) { | |||
1106 | // We need to care about 'const' for the copy constructor because an | |||
1107 | // implicit copy constructor might be declared with a non-const | |||
1108 | // parameter. | |||
1109 | data().NeedOverloadResolutionForCopyConstructor = true; | |||
1110 | data().NeedOverloadResolutionForMoveConstructor = true; | |||
1111 | data().NeedOverloadResolutionForMoveAssignment = true; | |||
1112 | } | |||
1113 | ||||
1114 | // C++11 [class.ctor]p5, C++11 [class.copy]p11: | |||
1115 | // A defaulted [special member] for a class X is defined as | |||
1116 | // deleted if: | |||
1117 | // -- X is a union-like class that has a variant member with a | |||
1118 | // non-trivial [corresponding special member] | |||
1119 | if (isUnion()) { | |||
1120 | if (FieldRec->hasNonTrivialCopyConstructor()) | |||
1121 | data().DefaultedCopyConstructorIsDeleted = true; | |||
1122 | if (FieldRec->hasNonTrivialMoveConstructor()) | |||
1123 | data().DefaultedMoveConstructorIsDeleted = true; | |||
1124 | if (FieldRec->hasNonTrivialMoveAssignment()) | |||
1125 | data().DefaultedMoveAssignmentIsDeleted = true; | |||
1126 | if (FieldRec->hasNonTrivialDestructor()) | |||
1127 | data().DefaultedDestructorIsDeleted = true; | |||
1128 | } | |||
1129 | ||||
1130 | // For an anonymous union member, our overload resolution will perform | |||
1131 | // overload resolution for its members. | |||
1132 | if (Field->isAnonymousStructOrUnion()) { | |||
1133 | data().NeedOverloadResolutionForCopyConstructor |= | |||
1134 | FieldRec->data().NeedOverloadResolutionForCopyConstructor; | |||
1135 | data().NeedOverloadResolutionForMoveConstructor |= | |||
1136 | FieldRec->data().NeedOverloadResolutionForMoveConstructor; | |||
1137 | data().NeedOverloadResolutionForMoveAssignment |= | |||
1138 | FieldRec->data().NeedOverloadResolutionForMoveAssignment; | |||
1139 | data().NeedOverloadResolutionForDestructor |= | |||
1140 | FieldRec->data().NeedOverloadResolutionForDestructor; | |||
1141 | } | |||
1142 | ||||
1143 | // C++0x [class.ctor]p5: | |||
1144 | // A default constructor is trivial [...] if: | |||
1145 | // -- for all the non-static data members of its class that are of | |||
1146 | // class type (or array thereof), each such class has a trivial | |||
1147 | // default constructor. | |||
1148 | if (!FieldRec->hasTrivialDefaultConstructor()) | |||
1149 | data().HasTrivialSpecialMembers &= ~SMF_DefaultConstructor; | |||
1150 | ||||
1151 | // C++0x [class.copy]p13: | |||
1152 | // A copy/move constructor for class X is trivial if [...] | |||
1153 | // [...] | |||
1154 | // -- for each non-static data member of X that is of class type (or | |||
1155 | // an array thereof), the constructor selected to copy/move that | |||
1156 | // member is trivial; | |||
1157 | if (!FieldRec->hasTrivialCopyConstructor()) | |||
1158 | data().HasTrivialSpecialMembers &= ~SMF_CopyConstructor; | |||
1159 | ||||
1160 | if (!FieldRec->hasTrivialCopyConstructorForCall()) | |||
1161 | data().HasTrivialSpecialMembersForCall &= ~SMF_CopyConstructor; | |||
1162 | ||||
1163 | // If the field doesn't have a simple move constructor, we'll eagerly | |||
1164 | // declare the move constructor for this class and we'll decide whether | |||
1165 | // it's trivial then. | |||
1166 | if (!FieldRec->hasTrivialMoveConstructor()) | |||
1167 | data().HasTrivialSpecialMembers &= ~SMF_MoveConstructor; | |||
1168 | ||||
1169 | if (!FieldRec->hasTrivialMoveConstructorForCall()) | |||
1170 | data().HasTrivialSpecialMembersForCall &= ~SMF_MoveConstructor; | |||
1171 | ||||
1172 | // C++0x [class.copy]p27: | |||
1173 | // A copy/move assignment operator for class X is trivial if [...] | |||
1174 | // [...] | |||
1175 | // -- for each non-static data member of X that is of class type (or | |||
1176 | // an array thereof), the assignment operator selected to | |||
1177 | // copy/move that member is trivial; | |||
1178 | if (!FieldRec->hasTrivialCopyAssignment()) | |||
1179 | data().HasTrivialSpecialMembers &= ~SMF_CopyAssignment; | |||
1180 | // If the field doesn't have a simple move assignment, we'll eagerly | |||
1181 | // declare the move assignment for this class and we'll decide whether | |||
1182 | // it's trivial then. | |||
1183 | if (!FieldRec->hasTrivialMoveAssignment()) | |||
1184 | data().HasTrivialSpecialMembers &= ~SMF_MoveAssignment; | |||
1185 | ||||
1186 | if (!FieldRec->hasTrivialDestructor()) | |||
1187 | data().HasTrivialSpecialMembers &= ~SMF_Destructor; | |||
1188 | if (!FieldRec->hasTrivialDestructorForCall()) | |||
1189 | data().HasTrivialSpecialMembersForCall &= ~SMF_Destructor; | |||
1190 | if (!FieldRec->hasIrrelevantDestructor()) | |||
1191 | data().HasIrrelevantDestructor = false; | |||
1192 | if (FieldRec->hasObjectMember()) | |||
1193 | setHasObjectMember(true); | |||
1194 | if (FieldRec->hasVolatileMember()) | |||
1195 | setHasVolatileMember(true); | |||
1196 | if (FieldRec->getArgPassingRestrictions() == | |||
1197 | RecordDecl::APK_CanNeverPassInRegs) | |||
1198 | setArgPassingRestrictions(RecordDecl::APK_CanNeverPassInRegs); | |||
1199 | ||||
1200 | // C++0x [class]p7: | |||
1201 | // A standard-layout class is a class that: | |||
1202 | // -- has no non-static data members of type non-standard-layout | |||
1203 | // class (or array of such types) [...] | |||
1204 | if (!FieldRec->isStandardLayout()) | |||
1205 | data().IsStandardLayout = false; | |||
1206 | if (!FieldRec->isCXX11StandardLayout()) | |||
1207 | data().IsCXX11StandardLayout = false; | |||
1208 | ||||
1209 | // C++2a [class]p7: | |||
1210 | // A standard-layout class is a class that: | |||
1211 | // [...] | |||
1212 | // -- has no element of the set M(S) of types as a base class. | |||
1213 | if (data().IsStandardLayout && | |||
1214 | (isUnion() || IsFirstField || IsZeroSize) && | |||
1215 | hasSubobjectAtOffsetZeroOfEmptyBaseType(Context, FieldRec)) | |||
1216 | data().IsStandardLayout = false; | |||
1217 | ||||
1218 | // C++11 [class]p7: | |||
1219 | // A standard-layout class is a class that: | |||
1220 | // -- has no base classes of the same type as the first non-static | |||
1221 | // data member | |||
1222 | if (data().IsCXX11StandardLayout && IsFirstField) { | |||
1223 | // FIXME: We should check all base classes here, not just direct | |||
1224 | // base classes. | |||
1225 | for (const auto &BI : bases()) { | |||
1226 | if (Context.hasSameUnqualifiedType(BI.getType(), T)) { | |||
1227 | data().IsCXX11StandardLayout = false; | |||
1228 | break; | |||
1229 | } | |||
1230 | } | |||
1231 | } | |||
1232 | ||||
1233 | // Keep track of the presence of mutable fields. | |||
1234 | if (FieldRec->hasMutableFields()) { | |||
1235 | data().HasMutableFields = true; | |||
1236 | data().NeedOverloadResolutionForCopyConstructor = true; | |||
1237 | } | |||
1238 | ||||
1239 | // C++11 [class.copy]p13: | |||
1240 | // If the implicitly-defined constructor would satisfy the | |||
1241 | // requirements of a constexpr constructor, the implicitly-defined | |||
1242 | // constructor is constexpr. | |||
1243 | // C++11 [dcl.constexpr]p4: | |||
1244 | // -- every constructor involved in initializing non-static data | |||
1245 | // members [...] shall be a constexpr constructor | |||
1246 | if (!Field->hasInClassInitializer() && | |||
1247 | !FieldRec->hasConstexprDefaultConstructor() && !isUnion()) | |||
1248 | // The standard requires any in-class initializer to be a constant | |||
1249 | // expression. We consider this to be a defect. | |||
1250 | data().DefaultedDefaultConstructorIsConstexpr = false; | |||
1251 | ||||
1252 | // C++11 [class.copy]p8: | |||
1253 | // The implicitly-declared copy constructor for a class X will have | |||
1254 | // the form 'X::X(const X&)' if each potentially constructed subobject | |||
1255 | // of a class type M (or array thereof) has a copy constructor whose | |||
1256 | // first parameter is of type 'const M&' or 'const volatile M&'. | |||
1257 | if (!FieldRec->hasCopyConstructorWithConstParam()) | |||
1258 | data().ImplicitCopyConstructorCanHaveConstParamForNonVBase = false; | |||
1259 | ||||
1260 | // C++11 [class.copy]p18: | |||
1261 | // The implicitly-declared copy assignment oeprator for a class X will | |||
1262 | // have the form 'X& X::operator=(const X&)' if [...] for all the | |||
1263 | // non-static data members of X that are of a class type M (or array | |||
1264 | // thereof), each such class type has a copy assignment operator whose | |||
1265 | // parameter is of type 'const M&', 'const volatile M&' or 'M'. | |||
1266 | if (!FieldRec->hasCopyAssignmentWithConstParam()) | |||
1267 | data().ImplicitCopyAssignmentHasConstParam = false; | |||
1268 | ||||
1269 | if (FieldRec->hasUninitializedReferenceMember() && | |||
1270 | !Field->hasInClassInitializer()) | |||
1271 | data().HasUninitializedReferenceMember = true; | |||
1272 | ||||
1273 | // C++11 [class.union]p8, DR1460: | |||
1274 | // a non-static data member of an anonymous union that is a member of | |||
1275 | // X is also a variant member of X. | |||
1276 | if (FieldRec->hasVariantMembers() && | |||
1277 | Field->isAnonymousStructOrUnion()) | |||
1278 | data().HasVariantMembers = true; | |||
1279 | } | |||
1280 | } else { | |||
1281 | // Base element type of field is a non-class type. | |||
1282 | if (!T->isLiteralType(Context) || | |||
1283 | (!Field->hasInClassInitializer() && !isUnion() && | |||
1284 | !Context.getLangOpts().CPlusPlus2a)) | |||
1285 | data().DefaultedDefaultConstructorIsConstexpr = false; | |||
1286 | ||||
1287 | // C++11 [class.copy]p23: | |||
1288 | // A defaulted copy/move assignment operator for a class X is defined | |||
1289 | // as deleted if X has: | |||
1290 | // -- a non-static data member of const non-class type (or array | |||
1291 | // thereof) | |||
1292 | if (T.isConstQualified()) | |||
1293 | data().DefaultedMoveAssignmentIsDeleted = true; | |||
1294 | } | |||
1295 | ||||
1296 | // C++14 [meta.unary.prop]p4: | |||
1297 | // T is a class type [...] with [...] no non-static data members other | |||
1298 | // than subobjects of zero size | |||
1299 | if (data().Empty && !IsZeroSize) | |||
1300 | data().Empty = false; | |||
1301 | } | |||
1302 | ||||
1303 | // Handle using declarations of conversion functions. | |||
1304 | if (auto *Shadow = dyn_cast<UsingShadowDecl>(D)) { | |||
1305 | if (Shadow->getDeclName().getNameKind() | |||
1306 | == DeclarationName::CXXConversionFunctionName) { | |||
1307 | ASTContext &Ctx = getASTContext(); | |||
1308 | data().Conversions.get(Ctx).addDecl(Ctx, Shadow, Shadow->getAccess()); | |||
1309 | } | |||
1310 | } | |||
1311 | ||||
1312 | if (const auto *Using = dyn_cast<UsingDecl>(D)) { | |||
1313 | if (Using->getDeclName().getNameKind() == | |||
1314 | DeclarationName::CXXConstructorName) { | |||
1315 | data().HasInheritedConstructor = true; | |||
1316 | // C++1z [dcl.init.aggr]p1: | |||
1317 | // An aggregate is [...] a class [...] with no inherited constructors | |||
1318 | data().Aggregate = false; | |||
1319 | } | |||
1320 | ||||
1321 | if (Using->getDeclName().getCXXOverloadedOperator() == OO_Equal) | |||
1322 | data().HasInheritedAssignment = true; | |||
1323 | } | |||
1324 | } | |||
1325 | ||||
1326 | void CXXRecordDecl::finishedDefaultedOrDeletedMember(CXXMethodDecl *D) { | |||
1327 | assert(!D->isImplicit() && !D->isUserProvided())((!D->isImplicit() && !D->isUserProvided()) ? static_cast <void> (0) : __assert_fail ("!D->isImplicit() && !D->isUserProvided()" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1327, __PRETTY_FUNCTION__)); | |||
1328 | ||||
1329 | // The kind of special member this declaration is, if any. | |||
1330 | unsigned SMKind = 0; | |||
1331 | ||||
1332 | if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(D)) { | |||
1333 | if (Constructor->isDefaultConstructor()) { | |||
1334 | SMKind |= SMF_DefaultConstructor; | |||
1335 | if (Constructor->isConstexpr()) | |||
1336 | data().HasConstexprDefaultConstructor = true; | |||
1337 | } | |||
1338 | if (Constructor->isCopyConstructor()) | |||
1339 | SMKind |= SMF_CopyConstructor; | |||
1340 | else if (Constructor->isMoveConstructor()) | |||
1341 | SMKind |= SMF_MoveConstructor; | |||
1342 | else if (Constructor->isConstexpr()) | |||
1343 | // We may now know that the constructor is constexpr. | |||
1344 | data().HasConstexprNonCopyMoveConstructor = true; | |||
1345 | } else if (isa<CXXDestructorDecl>(D)) { | |||
1346 | SMKind |= SMF_Destructor; | |||
1347 | if (!D->isTrivial() || D->getAccess() != AS_public || D->isDeleted()) | |||
1348 | data().HasIrrelevantDestructor = false; | |||
1349 | } else if (D->isCopyAssignmentOperator()) | |||
1350 | SMKind |= SMF_CopyAssignment; | |||
1351 | else if (D->isMoveAssignmentOperator()) | |||
1352 | SMKind |= SMF_MoveAssignment; | |||
1353 | ||||
1354 | // Update which trivial / non-trivial special members we have. | |||
1355 | // addedMember will have skipped this step for this member. | |||
1356 | if (D->isTrivial()) | |||
1357 | data().HasTrivialSpecialMembers |= SMKind; | |||
1358 | else | |||
1359 | data().DeclaredNonTrivialSpecialMembers |= SMKind; | |||
1360 | } | |||
1361 | ||||
1362 | void CXXRecordDecl::setTrivialForCallFlags(CXXMethodDecl *D) { | |||
1363 | unsigned SMKind = 0; | |||
1364 | ||||
1365 | if (const auto *Constructor = dyn_cast<CXXConstructorDecl>(D)) { | |||
1366 | if (Constructor->isCopyConstructor()) | |||
1367 | SMKind = SMF_CopyConstructor; | |||
1368 | else if (Constructor->isMoveConstructor()) | |||
1369 | SMKind = SMF_MoveConstructor; | |||
1370 | } else if (isa<CXXDestructorDecl>(D)) | |||
1371 | SMKind = SMF_Destructor; | |||
1372 | ||||
1373 | if (D->isTrivialForCall()) | |||
1374 | data().HasTrivialSpecialMembersForCall |= SMKind; | |||
1375 | else | |||
1376 | data().DeclaredNonTrivialSpecialMembersForCall |= SMKind; | |||
1377 | } | |||
1378 | ||||
1379 | bool CXXRecordDecl::isCLike() const { | |||
1380 | if (getTagKind() == TTK_Class || getTagKind() == TTK_Interface || | |||
1381 | !TemplateOrInstantiation.isNull()) | |||
1382 | return false; | |||
1383 | if (!hasDefinition()) | |||
1384 | return true; | |||
1385 | ||||
1386 | return isPOD() && data().HasOnlyCMembers; | |||
1387 | } | |||
1388 | ||||
1389 | bool CXXRecordDecl::isGenericLambda() const { | |||
1390 | if (!isLambda()) return false; | |||
1391 | return getLambdaData().IsGenericLambda; | |||
1392 | } | |||
1393 | ||||
1394 | #ifndef NDEBUG | |||
1395 | static bool allLookupResultsAreTheSame(const DeclContext::lookup_result &R) { | |||
1396 | for (auto *D : R) | |||
1397 | if (!declaresSameEntity(D, R.front())) | |||
1398 | return false; | |||
1399 | return true; | |||
1400 | } | |||
1401 | #endif | |||
1402 | ||||
1403 | static NamedDecl* getLambdaCallOperatorHelper(const CXXRecordDecl &RD) { | |||
1404 | if (!RD.isLambda()) return nullptr; | |||
1405 | DeclarationName Name = | |||
1406 | RD.getASTContext().DeclarationNames.getCXXOperatorName(OO_Call); | |||
1407 | DeclContext::lookup_result Calls = RD.lookup(Name); | |||
1408 | ||||
1409 | assert(!Calls.empty() && "Missing lambda call operator!")((!Calls.empty() && "Missing lambda call operator!") ? static_cast<void> (0) : __assert_fail ("!Calls.empty() && \"Missing lambda call operator!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1409, __PRETTY_FUNCTION__)); | |||
1410 | assert(allLookupResultsAreTheSame(Calls) &&((allLookupResultsAreTheSame(Calls) && "More than one lambda call operator!" ) ? static_cast<void> (0) : __assert_fail ("allLookupResultsAreTheSame(Calls) && \"More than one lambda call operator!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1411, __PRETTY_FUNCTION__)) | |||
1411 | "More than one lambda call operator!")((allLookupResultsAreTheSame(Calls) && "More than one lambda call operator!" ) ? static_cast<void> (0) : __assert_fail ("allLookupResultsAreTheSame(Calls) && \"More than one lambda call operator!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1411, __PRETTY_FUNCTION__)); | |||
1412 | return Calls.front(); | |||
1413 | } | |||
1414 | ||||
1415 | FunctionTemplateDecl* CXXRecordDecl::getDependentLambdaCallOperator() const { | |||
1416 | NamedDecl *CallOp = getLambdaCallOperatorHelper(*this); | |||
1417 | return dyn_cast_or_null<FunctionTemplateDecl>(CallOp); | |||
1418 | } | |||
1419 | ||||
1420 | CXXMethodDecl *CXXRecordDecl::getLambdaCallOperator() const { | |||
1421 | NamedDecl *CallOp = getLambdaCallOperatorHelper(*this); | |||
1422 | ||||
1423 | if (CallOp == nullptr) | |||
1424 | return nullptr; | |||
1425 | ||||
1426 | if (const auto *CallOpTmpl = dyn_cast<FunctionTemplateDecl>(CallOp)) | |||
1427 | return cast<CXXMethodDecl>(CallOpTmpl->getTemplatedDecl()); | |||
1428 | ||||
1429 | return cast<CXXMethodDecl>(CallOp); | |||
1430 | } | |||
1431 | ||||
1432 | CXXMethodDecl* CXXRecordDecl::getLambdaStaticInvoker() const { | |||
1433 | if (!isLambda()) return nullptr; | |||
1434 | DeclarationName Name = | |||
1435 | &getASTContext().Idents.get(getLambdaStaticInvokerName()); | |||
1436 | DeclContext::lookup_result Invoker = lookup(Name); | |||
1437 | if (Invoker.empty()) return nullptr; | |||
1438 | assert(allLookupResultsAreTheSame(Invoker) &&((allLookupResultsAreTheSame(Invoker) && "More than one static invoker operator!" ) ? static_cast<void> (0) : __assert_fail ("allLookupResultsAreTheSame(Invoker) && \"More than one static invoker operator!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1439, __PRETTY_FUNCTION__)) | |||
1439 | "More than one static invoker operator!")((allLookupResultsAreTheSame(Invoker) && "More than one static invoker operator!" ) ? static_cast<void> (0) : __assert_fail ("allLookupResultsAreTheSame(Invoker) && \"More than one static invoker operator!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1439, __PRETTY_FUNCTION__)); | |||
1440 | NamedDecl *InvokerFun = Invoker.front(); | |||
1441 | if (const auto *InvokerTemplate = dyn_cast<FunctionTemplateDecl>(InvokerFun)) | |||
1442 | return cast<CXXMethodDecl>(InvokerTemplate->getTemplatedDecl()); | |||
1443 | ||||
1444 | return cast<CXXMethodDecl>(InvokerFun); | |||
1445 | } | |||
1446 | ||||
1447 | void CXXRecordDecl::getCaptureFields( | |||
1448 | llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures, | |||
1449 | FieldDecl *&ThisCapture) const { | |||
1450 | Captures.clear(); | |||
1451 | ThisCapture = nullptr; | |||
1452 | ||||
1453 | LambdaDefinitionData &Lambda = getLambdaData(); | |||
1454 | RecordDecl::field_iterator Field = field_begin(); | |||
1455 | for (const LambdaCapture *C = Lambda.Captures, *CEnd = C + Lambda.NumCaptures; | |||
1456 | C != CEnd; ++C, ++Field) { | |||
1457 | if (C->capturesThis()) | |||
1458 | ThisCapture = *Field; | |||
1459 | else if (C->capturesVariable()) | |||
1460 | Captures[C->getCapturedVar()] = *Field; | |||
1461 | } | |||
1462 | assert(Field == field_end())((Field == field_end()) ? static_cast<void> (0) : __assert_fail ("Field == field_end()", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1462, __PRETTY_FUNCTION__)); | |||
1463 | } | |||
1464 | ||||
1465 | TemplateParameterList * | |||
1466 | CXXRecordDecl::getGenericLambdaTemplateParameterList() const { | |||
1467 | if (!isGenericLambda()) return nullptr; | |||
1468 | CXXMethodDecl *CallOp = getLambdaCallOperator(); | |||
1469 | if (FunctionTemplateDecl *Tmpl = CallOp->getDescribedFunctionTemplate()) | |||
1470 | return Tmpl->getTemplateParameters(); | |||
1471 | return nullptr; | |||
1472 | } | |||
1473 | ||||
1474 | ArrayRef<NamedDecl *> | |||
1475 | CXXRecordDecl::getLambdaExplicitTemplateParameters() const { | |||
1476 | TemplateParameterList *List = getGenericLambdaTemplateParameterList(); | |||
1477 | if (!List) | |||
1478 | return {}; | |||
1479 | ||||
1480 | assert(std::is_partitioned(List->begin(), List->end(),((std::is_partitioned(List->begin(), List->end(), [](const NamedDecl *D) { return !D->isImplicit(); }) && "Explicit template params should be ordered before implicit ones" ) ? static_cast<void> (0) : __assert_fail ("std::is_partitioned(List->begin(), List->end(), [](const NamedDecl *D) { return !D->isImplicit(); }) && \"Explicit template params should be ordered before implicit ones\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1482, __PRETTY_FUNCTION__)) | |||
1481 | [](const NamedDecl *D) { return !D->isImplicit(); })((std::is_partitioned(List->begin(), List->end(), [](const NamedDecl *D) { return !D->isImplicit(); }) && "Explicit template params should be ordered before implicit ones" ) ? static_cast<void> (0) : __assert_fail ("std::is_partitioned(List->begin(), List->end(), [](const NamedDecl *D) { return !D->isImplicit(); }) && \"Explicit template params should be ordered before implicit ones\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1482, __PRETTY_FUNCTION__)) | |||
1482 | && "Explicit template params should be ordered before implicit ones")((std::is_partitioned(List->begin(), List->end(), [](const NamedDecl *D) { return !D->isImplicit(); }) && "Explicit template params should be ordered before implicit ones" ) ? static_cast<void> (0) : __assert_fail ("std::is_partitioned(List->begin(), List->end(), [](const NamedDecl *D) { return !D->isImplicit(); }) && \"Explicit template params should be ordered before implicit ones\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1482, __PRETTY_FUNCTION__)); | |||
1483 | ||||
1484 | const auto ExplicitEnd = llvm::partition_point( | |||
1485 | *List, [](const NamedDecl *D) { return !D->isImplicit(); }); | |||
1486 | return llvm::makeArrayRef(List->begin(), ExplicitEnd); | |||
1487 | } | |||
1488 | ||||
1489 | Decl *CXXRecordDecl::getLambdaContextDecl() const { | |||
1490 | assert(isLambda() && "Not a lambda closure type!")((isLambda() && "Not a lambda closure type!") ? static_cast <void> (0) : __assert_fail ("isLambda() && \"Not a lambda closure type!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1490, __PRETTY_FUNCTION__)); | |||
1491 | ExternalASTSource *Source = getParentASTContext().getExternalSource(); | |||
1492 | return getLambdaData().ContextDecl.get(Source); | |||
1493 | } | |||
1494 | ||||
1495 | static CanQualType GetConversionType(ASTContext &Context, NamedDecl *Conv) { | |||
1496 | QualType T = | |||
1497 | cast<CXXConversionDecl>(Conv->getUnderlyingDecl()->getAsFunction()) | |||
1498 | ->getConversionType(); | |||
1499 | return Context.getCanonicalType(T); | |||
1500 | } | |||
1501 | ||||
1502 | /// Collect the visible conversions of a base class. | |||
1503 | /// | |||
1504 | /// \param Record a base class of the class we're considering | |||
1505 | /// \param InVirtual whether this base class is a virtual base (or a base | |||
1506 | /// of a virtual base) | |||
1507 | /// \param Access the access along the inheritance path to this base | |||
1508 | /// \param ParentHiddenTypes the conversions provided by the inheritors | |||
1509 | /// of this base | |||
1510 | /// \param Output the set to which to add conversions from non-virtual bases | |||
1511 | /// \param VOutput the set to which to add conversions from virtual bases | |||
1512 | /// \param HiddenVBaseCs the set of conversions which were hidden in a | |||
1513 | /// virtual base along some inheritance path | |||
1514 | static void CollectVisibleConversions(ASTContext &Context, | |||
1515 | CXXRecordDecl *Record, | |||
1516 | bool InVirtual, | |||
1517 | AccessSpecifier Access, | |||
1518 | const llvm::SmallPtrSet<CanQualType, 8> &ParentHiddenTypes, | |||
1519 | ASTUnresolvedSet &Output, | |||
1520 | UnresolvedSetImpl &VOutput, | |||
1521 | llvm::SmallPtrSet<NamedDecl*, 8> &HiddenVBaseCs) { | |||
1522 | // The set of types which have conversions in this class or its | |||
1523 | // subclasses. As an optimization, we don't copy the derived set | |||
1524 | // unless it might change. | |||
1525 | const llvm::SmallPtrSet<CanQualType, 8> *HiddenTypes = &ParentHiddenTypes; | |||
1526 | llvm::SmallPtrSet<CanQualType, 8> HiddenTypesBuffer; | |||
1527 | ||||
1528 | // Collect the direct conversions and figure out which conversions | |||
1529 | // will be hidden in the subclasses. | |||
1530 | CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin(); | |||
1531 | CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end(); | |||
1532 | if (ConvI != ConvE) { | |||
1533 | HiddenTypesBuffer = ParentHiddenTypes; | |||
1534 | HiddenTypes = &HiddenTypesBuffer; | |||
1535 | ||||
1536 | for (CXXRecordDecl::conversion_iterator I = ConvI; I != ConvE; ++I) { | |||
1537 | CanQualType ConvType(GetConversionType(Context, I.getDecl())); | |||
1538 | bool Hidden = ParentHiddenTypes.count(ConvType); | |||
1539 | if (!Hidden) | |||
1540 | HiddenTypesBuffer.insert(ConvType); | |||
1541 | ||||
1542 | // If this conversion is hidden and we're in a virtual base, | |||
1543 | // remember that it's hidden along some inheritance path. | |||
1544 | if (Hidden && InVirtual) | |||
1545 | HiddenVBaseCs.insert(cast<NamedDecl>(I.getDecl()->getCanonicalDecl())); | |||
1546 | ||||
1547 | // If this conversion isn't hidden, add it to the appropriate output. | |||
1548 | else if (!Hidden) { | |||
1549 | AccessSpecifier IAccess | |||
1550 | = CXXRecordDecl::MergeAccess(Access, I.getAccess()); | |||
1551 | ||||
1552 | if (InVirtual) | |||
1553 | VOutput.addDecl(I.getDecl(), IAccess); | |||
1554 | else | |||
1555 | Output.addDecl(Context, I.getDecl(), IAccess); | |||
1556 | } | |||
1557 | } | |||
1558 | } | |||
1559 | ||||
1560 | // Collect information recursively from any base classes. | |||
1561 | for (const auto &I : Record->bases()) { | |||
1562 | const RecordType *RT = I.getType()->getAs<RecordType>(); | |||
1563 | if (!RT) continue; | |||
1564 | ||||
1565 | AccessSpecifier BaseAccess | |||
1566 | = CXXRecordDecl::MergeAccess(Access, I.getAccessSpecifier()); | |||
1567 | bool BaseInVirtual = InVirtual || I.isVirtual(); | |||
1568 | ||||
1569 | auto *Base = cast<CXXRecordDecl>(RT->getDecl()); | |||
1570 | CollectVisibleConversions(Context, Base, BaseInVirtual, BaseAccess, | |||
1571 | *HiddenTypes, Output, VOutput, HiddenVBaseCs); | |||
1572 | } | |||
1573 | } | |||
1574 | ||||
1575 | /// Collect the visible conversions of a class. | |||
1576 | /// | |||
1577 | /// This would be extremely straightforward if it weren't for virtual | |||
1578 | /// bases. It might be worth special-casing that, really. | |||
1579 | static void CollectVisibleConversions(ASTContext &Context, | |||
1580 | CXXRecordDecl *Record, | |||
1581 | ASTUnresolvedSet &Output) { | |||
1582 | // The collection of all conversions in virtual bases that we've | |||
1583 | // found. These will be added to the output as long as they don't | |||
1584 | // appear in the hidden-conversions set. | |||
1585 | UnresolvedSet<8> VBaseCs; | |||
1586 | ||||
1587 | // The set of conversions in virtual bases that we've determined to | |||
1588 | // be hidden. | |||
1589 | llvm::SmallPtrSet<NamedDecl*, 8> HiddenVBaseCs; | |||
1590 | ||||
1591 | // The set of types hidden by classes derived from this one. | |||
1592 | llvm::SmallPtrSet<CanQualType, 8> HiddenTypes; | |||
1593 | ||||
1594 | // Go ahead and collect the direct conversions and add them to the | |||
1595 | // hidden-types set. | |||
1596 | CXXRecordDecl::conversion_iterator ConvI = Record->conversion_begin(); | |||
1597 | CXXRecordDecl::conversion_iterator ConvE = Record->conversion_end(); | |||
1598 | Output.append(Context, ConvI, ConvE); | |||
1599 | for (; ConvI != ConvE; ++ConvI) | |||
1600 | HiddenTypes.insert(GetConversionType(Context, ConvI.getDecl())); | |||
1601 | ||||
1602 | // Recursively collect conversions from base classes. | |||
1603 | for (const auto &I : Record->bases()) { | |||
1604 | const RecordType *RT = I.getType()->getAs<RecordType>(); | |||
1605 | if (!RT) continue; | |||
1606 | ||||
1607 | CollectVisibleConversions(Context, cast<CXXRecordDecl>(RT->getDecl()), | |||
1608 | I.isVirtual(), I.getAccessSpecifier(), | |||
1609 | HiddenTypes, Output, VBaseCs, HiddenVBaseCs); | |||
1610 | } | |||
1611 | ||||
1612 | // Add any unhidden conversions provided by virtual bases. | |||
1613 | for (UnresolvedSetIterator I = VBaseCs.begin(), E = VBaseCs.end(); | |||
1614 | I != E; ++I) { | |||
1615 | if (!HiddenVBaseCs.count(cast<NamedDecl>(I.getDecl()->getCanonicalDecl()))) | |||
1616 | Output.addDecl(Context, I.getDecl(), I.getAccess()); | |||
1617 | } | |||
1618 | } | |||
1619 | ||||
1620 | /// getVisibleConversionFunctions - get all conversion functions visible | |||
1621 | /// in current class; including conversion function templates. | |||
1622 | llvm::iterator_range<CXXRecordDecl::conversion_iterator> | |||
1623 | CXXRecordDecl::getVisibleConversionFunctions() { | |||
1624 | ASTContext &Ctx = getASTContext(); | |||
1625 | ||||
1626 | ASTUnresolvedSet *Set; | |||
1627 | if (bases_begin() == bases_end()) { | |||
1628 | // If root class, all conversions are visible. | |||
1629 | Set = &data().Conversions.get(Ctx); | |||
1630 | } else { | |||
1631 | Set = &data().VisibleConversions.get(Ctx); | |||
1632 | // If visible conversion list is not evaluated, evaluate it. | |||
1633 | if (!data().ComputedVisibleConversions) { | |||
1634 | CollectVisibleConversions(Ctx, this, *Set); | |||
1635 | data().ComputedVisibleConversions = true; | |||
1636 | } | |||
1637 | } | |||
1638 | return llvm::make_range(Set->begin(), Set->end()); | |||
1639 | } | |||
1640 | ||||
1641 | void CXXRecordDecl::removeConversion(const NamedDecl *ConvDecl) { | |||
1642 | // This operation is O(N) but extremely rare. Sema only uses it to | |||
1643 | // remove UsingShadowDecls in a class that were followed by a direct | |||
1644 | // declaration, e.g.: | |||
1645 | // class A : B { | |||
1646 | // using B::operator int; | |||
1647 | // operator int(); | |||
1648 | // }; | |||
1649 | // This is uncommon by itself and even more uncommon in conjunction | |||
1650 | // with sufficiently large numbers of directly-declared conversions | |||
1651 | // that asymptotic behavior matters. | |||
1652 | ||||
1653 | ASTUnresolvedSet &Convs = data().Conversions.get(getASTContext()); | |||
1654 | for (unsigned I = 0, E = Convs.size(); I != E; ++I) { | |||
1655 | if (Convs[I].getDecl() == ConvDecl) { | |||
1656 | Convs.erase(I); | |||
1657 | assert(llvm::find(Convs, ConvDecl) == Convs.end() &&((llvm::find(Convs, ConvDecl) == Convs.end() && "conversion was found multiple times in unresolved set" ) ? static_cast<void> (0) : __assert_fail ("llvm::find(Convs, ConvDecl) == Convs.end() && \"conversion was found multiple times in unresolved set\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1658, __PRETTY_FUNCTION__)) | |||
1658 | "conversion was found multiple times in unresolved set")((llvm::find(Convs, ConvDecl) == Convs.end() && "conversion was found multiple times in unresolved set" ) ? static_cast<void> (0) : __assert_fail ("llvm::find(Convs, ConvDecl) == Convs.end() && \"conversion was found multiple times in unresolved set\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1658, __PRETTY_FUNCTION__)); | |||
1659 | return; | |||
1660 | } | |||
1661 | } | |||
1662 | ||||
1663 | llvm_unreachable("conversion not found in set!")::llvm::llvm_unreachable_internal("conversion not found in set!" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1663); | |||
1664 | } | |||
1665 | ||||
1666 | CXXRecordDecl *CXXRecordDecl::getInstantiatedFromMemberClass() const { | |||
1667 | if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) | |||
1668 | return cast<CXXRecordDecl>(MSInfo->getInstantiatedFrom()); | |||
1669 | ||||
1670 | return nullptr; | |||
1671 | } | |||
1672 | ||||
1673 | MemberSpecializationInfo *CXXRecordDecl::getMemberSpecializationInfo() const { | |||
1674 | return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>(); | |||
1675 | } | |||
1676 | ||||
1677 | void | |||
1678 | CXXRecordDecl::setInstantiationOfMemberClass(CXXRecordDecl *RD, | |||
1679 | TemplateSpecializationKind TSK) { | |||
1680 | assert(TemplateOrInstantiation.isNull() &&((TemplateOrInstantiation.isNull() && "Previous template or instantiation?" ) ? static_cast<void> (0) : __assert_fail ("TemplateOrInstantiation.isNull() && \"Previous template or instantiation?\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1681, __PRETTY_FUNCTION__)) | |||
1681 | "Previous template or instantiation?")((TemplateOrInstantiation.isNull() && "Previous template or instantiation?" ) ? static_cast<void> (0) : __assert_fail ("TemplateOrInstantiation.isNull() && \"Previous template or instantiation?\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1681, __PRETTY_FUNCTION__)); | |||
1682 | assert(!isa<ClassTemplatePartialSpecializationDecl>(this))((!isa<ClassTemplatePartialSpecializationDecl>(this)) ? static_cast<void> (0) : __assert_fail ("!isa<ClassTemplatePartialSpecializationDecl>(this)" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1682, __PRETTY_FUNCTION__)); | |||
1683 | TemplateOrInstantiation | |||
1684 | = new (getASTContext()) MemberSpecializationInfo(RD, TSK); | |||
1685 | } | |||
1686 | ||||
1687 | ClassTemplateDecl *CXXRecordDecl::getDescribedClassTemplate() const { | |||
1688 | return TemplateOrInstantiation.dyn_cast<ClassTemplateDecl *>(); | |||
1689 | } | |||
1690 | ||||
1691 | void CXXRecordDecl::setDescribedClassTemplate(ClassTemplateDecl *Template) { | |||
1692 | TemplateOrInstantiation = Template; | |||
1693 | } | |||
1694 | ||||
1695 | TemplateSpecializationKind CXXRecordDecl::getTemplateSpecializationKind() const{ | |||
1696 | if (const auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(this)) | |||
1697 | return Spec->getSpecializationKind(); | |||
1698 | ||||
1699 | if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) | |||
1700 | return MSInfo->getTemplateSpecializationKind(); | |||
1701 | ||||
1702 | return TSK_Undeclared; | |||
1703 | } | |||
1704 | ||||
1705 | void | |||
1706 | CXXRecordDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK) { | |||
1707 | if (auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(this)) { | |||
1708 | Spec->setSpecializationKind(TSK); | |||
1709 | return; | |||
1710 | } | |||
1711 | ||||
1712 | if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) { | |||
1713 | MSInfo->setTemplateSpecializationKind(TSK); | |||
1714 | return; | |||
1715 | } | |||
1716 | ||||
1717 | llvm_unreachable("Not a class template or member class specialization")::llvm::llvm_unreachable_internal("Not a class template or member class specialization" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1717); | |||
1718 | } | |||
1719 | ||||
1720 | const CXXRecordDecl *CXXRecordDecl::getTemplateInstantiationPattern() const { | |||
1721 | auto GetDefinitionOrSelf = | |||
1722 | [](const CXXRecordDecl *D) -> const CXXRecordDecl * { | |||
1723 | if (auto *Def = D->getDefinition()) | |||
1724 | return Def; | |||
1725 | return D; | |||
1726 | }; | |||
1727 | ||||
1728 | // If it's a class template specialization, find the template or partial | |||
1729 | // specialization from which it was instantiated. | |||
1730 | if (auto *TD = dyn_cast<ClassTemplateSpecializationDecl>(this)) { | |||
1731 | auto From = TD->getInstantiatedFrom(); | |||
1732 | if (auto *CTD = From.dyn_cast<ClassTemplateDecl *>()) { | |||
1733 | while (auto *NewCTD = CTD->getInstantiatedFromMemberTemplate()) { | |||
1734 | if (NewCTD->isMemberSpecialization()) | |||
1735 | break; | |||
1736 | CTD = NewCTD; | |||
1737 | } | |||
1738 | return GetDefinitionOrSelf(CTD->getTemplatedDecl()); | |||
1739 | } | |||
1740 | if (auto *CTPSD = | |||
1741 | From.dyn_cast<ClassTemplatePartialSpecializationDecl *>()) { | |||
1742 | while (auto *NewCTPSD = CTPSD->getInstantiatedFromMember()) { | |||
1743 | if (NewCTPSD->isMemberSpecialization()) | |||
1744 | break; | |||
1745 | CTPSD = NewCTPSD; | |||
1746 | } | |||
1747 | return GetDefinitionOrSelf(CTPSD); | |||
1748 | } | |||
1749 | } | |||
1750 | ||||
1751 | if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) { | |||
1752 | if (isTemplateInstantiation(MSInfo->getTemplateSpecializationKind())) { | |||
1753 | const CXXRecordDecl *RD = this; | |||
1754 | while (auto *NewRD = RD->getInstantiatedFromMemberClass()) | |||
1755 | RD = NewRD; | |||
1756 | return GetDefinitionOrSelf(RD); | |||
1757 | } | |||
1758 | } | |||
1759 | ||||
1760 | assert(!isTemplateInstantiation(this->getTemplateSpecializationKind()) &&((!isTemplateInstantiation(this->getTemplateSpecializationKind ()) && "couldn't find pattern for class template instantiation" ) ? static_cast<void> (0) : __assert_fail ("!isTemplateInstantiation(this->getTemplateSpecializationKind()) && \"couldn't find pattern for class template instantiation\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1761, __PRETTY_FUNCTION__)) | |||
1761 | "couldn't find pattern for class template instantiation")((!isTemplateInstantiation(this->getTemplateSpecializationKind ()) && "couldn't find pattern for class template instantiation" ) ? static_cast<void> (0) : __assert_fail ("!isTemplateInstantiation(this->getTemplateSpecializationKind()) && \"couldn't find pattern for class template instantiation\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1761, __PRETTY_FUNCTION__)); | |||
1762 | return nullptr; | |||
1763 | } | |||
1764 | ||||
1765 | CXXDestructorDecl *CXXRecordDecl::getDestructor() const { | |||
1766 | ASTContext &Context = getASTContext(); | |||
1767 | QualType ClassType = Context.getTypeDeclType(this); | |||
1768 | ||||
1769 | DeclarationName Name | |||
1770 | = Context.DeclarationNames.getCXXDestructorName( | |||
1771 | Context.getCanonicalType(ClassType)); | |||
1772 | ||||
1773 | DeclContext::lookup_result R = lookup(Name); | |||
1774 | ||||
1775 | return R.empty() ? nullptr : dyn_cast<CXXDestructorDecl>(R.front()); | |||
1776 | } | |||
1777 | ||||
1778 | bool CXXRecordDecl::isAnyDestructorNoReturn() const { | |||
1779 | // Destructor is noreturn. | |||
1780 | if (const CXXDestructorDecl *Destructor = getDestructor()) | |||
1781 | if (Destructor->isNoReturn()) | |||
1782 | return true; | |||
1783 | ||||
1784 | // Check base classes destructor for noreturn. | |||
1785 | for (const auto &Base : bases()) | |||
1786 | if (const CXXRecordDecl *RD = Base.getType()->getAsCXXRecordDecl()) | |||
1787 | if (RD->isAnyDestructorNoReturn()) | |||
1788 | return true; | |||
1789 | ||||
1790 | // Check fields for noreturn. | |||
1791 | for (const auto *Field : fields()) | |||
1792 | if (const CXXRecordDecl *RD = | |||
1793 | Field->getType()->getBaseElementTypeUnsafe()->getAsCXXRecordDecl()) | |||
1794 | if (RD->isAnyDestructorNoReturn()) | |||
1795 | return true; | |||
1796 | ||||
1797 | // All destructors are not noreturn. | |||
1798 | return false; | |||
1799 | } | |||
1800 | ||||
1801 | static bool isDeclContextInNamespace(const DeclContext *DC) { | |||
1802 | while (!DC->isTranslationUnit()) { | |||
1803 | if (DC->isNamespace()) | |||
1804 | return true; | |||
1805 | DC = DC->getParent(); | |||
1806 | } | |||
1807 | return false; | |||
1808 | } | |||
1809 | ||||
1810 | bool CXXRecordDecl::isInterfaceLike() const { | |||
1811 | assert(hasDefinition() && "checking for interface-like without a definition")((hasDefinition() && "checking for interface-like without a definition" ) ? static_cast<void> (0) : __assert_fail ("hasDefinition() && \"checking for interface-like without a definition\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1811, __PRETTY_FUNCTION__)); | |||
1812 | // All __interfaces are inheritently interface-like. | |||
1813 | if (isInterface()) | |||
1814 | return true; | |||
1815 | ||||
1816 | // Interface-like types cannot have a user declared constructor, destructor, | |||
1817 | // friends, VBases, conversion functions, or fields. Additionally, lambdas | |||
1818 | // cannot be interface types. | |||
1819 | if (isLambda() || hasUserDeclaredConstructor() || | |||
1820 | hasUserDeclaredDestructor() || !field_empty() || hasFriends() || | |||
1821 | getNumVBases() > 0 || conversion_end() - conversion_begin() > 0) | |||
1822 | return false; | |||
1823 | ||||
1824 | // No interface-like type can have a method with a definition. | |||
1825 | for (const auto *const Method : methods()) | |||
1826 | if (Method->isDefined() && !Method->isImplicit()) | |||
1827 | return false; | |||
1828 | ||||
1829 | // Check "Special" types. | |||
1830 | const auto *Uuid = getAttr<UuidAttr>(); | |||
1831 | // MS SDK declares IUnknown/IDispatch both in the root of a TU, or in an | |||
1832 | // extern C++ block directly in the TU. These are only valid if in one | |||
1833 | // of these two situations. | |||
1834 | if (Uuid && isStruct() && !getDeclContext()->isExternCContext() && | |||
1835 | !isDeclContextInNamespace(getDeclContext()) && | |||
1836 | ((getName() == "IUnknown" && | |||
1837 | Uuid->getGuid() == "00000000-0000-0000-C000-000000000046") || | |||
1838 | (getName() == "IDispatch" && | |||
1839 | Uuid->getGuid() == "00020400-0000-0000-C000-000000000046"))) { | |||
1840 | if (getNumBases() > 0) | |||
1841 | return false; | |||
1842 | return true; | |||
1843 | } | |||
1844 | ||||
1845 | // FIXME: Any access specifiers is supposed to make this no longer interface | |||
1846 | // like. | |||
1847 | ||||
1848 | // If this isn't a 'special' type, it must have a single interface-like base. | |||
1849 | if (getNumBases() != 1) | |||
1850 | return false; | |||
1851 | ||||
1852 | const auto BaseSpec = *bases_begin(); | |||
1853 | if (BaseSpec.isVirtual() || BaseSpec.getAccessSpecifier() != AS_public) | |||
1854 | return false; | |||
1855 | const auto *Base = BaseSpec.getType()->getAsCXXRecordDecl(); | |||
1856 | if (Base->isInterface() || !Base->isInterfaceLike()) | |||
1857 | return false; | |||
1858 | return true; | |||
1859 | } | |||
1860 | ||||
1861 | void CXXRecordDecl::completeDefinition() { | |||
1862 | completeDefinition(nullptr); | |||
1863 | } | |||
1864 | ||||
1865 | void CXXRecordDecl::completeDefinition(CXXFinalOverriderMap *FinalOverriders) { | |||
1866 | RecordDecl::completeDefinition(); | |||
1867 | ||||
1868 | // If the class may be abstract (but hasn't been marked as such), check for | |||
1869 | // any pure final overriders. | |||
1870 | if (mayBeAbstract()) { | |||
1871 | CXXFinalOverriderMap MyFinalOverriders; | |||
1872 | if (!FinalOverriders) { | |||
1873 | getFinalOverriders(MyFinalOverriders); | |||
1874 | FinalOverriders = &MyFinalOverriders; | |||
1875 | } | |||
1876 | ||||
1877 | bool Done = false; | |||
1878 | for (CXXFinalOverriderMap::iterator M = FinalOverriders->begin(), | |||
1879 | MEnd = FinalOverriders->end(); | |||
1880 | M != MEnd && !Done; ++M) { | |||
1881 | for (OverridingMethods::iterator SO = M->second.begin(), | |||
1882 | SOEnd = M->second.end(); | |||
1883 | SO != SOEnd && !Done; ++SO) { | |||
1884 | assert(SO->second.size() > 0 &&((SO->second.size() > 0 && "All virtual functions have overriding virtual functions" ) ? static_cast<void> (0) : __assert_fail ("SO->second.size() > 0 && \"All virtual functions have overriding virtual functions\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1885, __PRETTY_FUNCTION__)) | |||
1885 | "All virtual functions have overriding virtual functions")((SO->second.size() > 0 && "All virtual functions have overriding virtual functions" ) ? static_cast<void> (0) : __assert_fail ("SO->second.size() > 0 && \"All virtual functions have overriding virtual functions\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 1885, __PRETTY_FUNCTION__)); | |||
1886 | ||||
1887 | // C++ [class.abstract]p4: | |||
1888 | // A class is abstract if it contains or inherits at least one | |||
1889 | // pure virtual function for which the final overrider is pure | |||
1890 | // virtual. | |||
1891 | if (SO->second.front().Method->isPure()) { | |||
1892 | data().Abstract = true; | |||
1893 | Done = true; | |||
1894 | break; | |||
1895 | } | |||
1896 | } | |||
1897 | } | |||
1898 | } | |||
1899 | ||||
1900 | // Set access bits correctly on the directly-declared conversions. | |||
1901 | for (conversion_iterator I = conversion_begin(), E = conversion_end(); | |||
1902 | I != E; ++I) | |||
1903 | I.setAccess((*I)->getAccess()); | |||
1904 | } | |||
1905 | ||||
1906 | bool CXXRecordDecl::mayBeAbstract() const { | |||
1907 | if (data().Abstract || isInvalidDecl() || !data().Polymorphic || | |||
1908 | isDependentContext()) | |||
1909 | return false; | |||
1910 | ||||
1911 | for (const auto &B : bases()) { | |||
1912 | const auto *BaseDecl = | |||
1913 | cast<CXXRecordDecl>(B.getType()->castAs<RecordType>()->getDecl()); | |||
1914 | if (BaseDecl->isAbstract()) | |||
1915 | return true; | |||
1916 | } | |||
1917 | ||||
1918 | return false; | |||
1919 | } | |||
1920 | ||||
1921 | void CXXDeductionGuideDecl::anchor() {} | |||
1922 | ||||
1923 | bool ExplicitSpecifier::isEquivalent(const ExplicitSpecifier Other) const { | |||
1924 | if ((getKind() != Other.getKind() || | |||
1925 | getKind() == ExplicitSpecKind::Unresolved)) { | |||
1926 | if (getKind() == ExplicitSpecKind::Unresolved && | |||
1927 | Other.getKind() == ExplicitSpecKind::Unresolved) { | |||
1928 | ODRHash SelfHash, OtherHash; | |||
1929 | SelfHash.AddStmt(getExpr()); | |||
1930 | OtherHash.AddStmt(Other.getExpr()); | |||
1931 | return SelfHash.CalculateHash() == OtherHash.CalculateHash(); | |||
1932 | } else | |||
1933 | return false; | |||
1934 | } | |||
1935 | return true; | |||
1936 | } | |||
1937 | ||||
1938 | ExplicitSpecifier ExplicitSpecifier::getFromDecl(FunctionDecl *Function) { | |||
1939 | switch (Function->getDeclKind()) { | |||
1940 | case Decl::Kind::CXXConstructor: | |||
1941 | return cast<CXXConstructorDecl>(Function)->getExplicitSpecifier(); | |||
1942 | case Decl::Kind::CXXConversion: | |||
1943 | return cast<CXXConversionDecl>(Function)->getExplicitSpecifier(); | |||
1944 | case Decl::Kind::CXXDeductionGuide: | |||
1945 | return cast<CXXDeductionGuideDecl>(Function)->getExplicitSpecifier(); | |||
1946 | default: | |||
1947 | return {}; | |||
1948 | } | |||
1949 | } | |||
1950 | ||||
1951 | CXXDeductionGuideDecl *CXXDeductionGuideDecl::Create( | |||
1952 | ASTContext &C, DeclContext *DC, SourceLocation StartLoc, | |||
1953 | ExplicitSpecifier ES, const DeclarationNameInfo &NameInfo, QualType T, | |||
1954 | TypeSourceInfo *TInfo, SourceLocation EndLocation) { | |||
1955 | return new (C, DC) CXXDeductionGuideDecl(C, DC, StartLoc, ES, NameInfo, T, | |||
1956 | TInfo, EndLocation); | |||
1957 | } | |||
1958 | ||||
1959 | CXXDeductionGuideDecl *CXXDeductionGuideDecl::CreateDeserialized(ASTContext &C, | |||
1960 | unsigned ID) { | |||
1961 | return new (C, ID) CXXDeductionGuideDecl( | |||
1962 | C, nullptr, SourceLocation(), ExplicitSpecifier(), DeclarationNameInfo(), | |||
1963 | QualType(), nullptr, SourceLocation()); | |||
1964 | } | |||
1965 | ||||
1966 | void CXXMethodDecl::anchor() {} | |||
1967 | ||||
1968 | bool CXXMethodDecl::isStatic() const { | |||
1969 | const CXXMethodDecl *MD = getCanonicalDecl(); | |||
1970 | ||||
1971 | if (MD->getStorageClass() == SC_Static) | |||
1972 | return true; | |||
1973 | ||||
1974 | OverloadedOperatorKind OOK = getDeclName().getCXXOverloadedOperator(); | |||
1975 | return isStaticOverloadedOperator(OOK); | |||
1976 | } | |||
1977 | ||||
1978 | static bool recursivelyOverrides(const CXXMethodDecl *DerivedMD, | |||
1979 | const CXXMethodDecl *BaseMD) { | |||
1980 | for (const CXXMethodDecl *MD : DerivedMD->overridden_methods()) { | |||
1981 | if (MD->getCanonicalDecl() == BaseMD->getCanonicalDecl()) | |||
1982 | return true; | |||
1983 | if (recursivelyOverrides(MD, BaseMD)) | |||
1984 | return true; | |||
1985 | } | |||
1986 | return false; | |||
1987 | } | |||
1988 | ||||
1989 | CXXMethodDecl * | |||
1990 | CXXMethodDecl::getCorrespondingMethodDeclaredInClass(const CXXRecordDecl *RD, | |||
1991 | bool MayBeBase) { | |||
1992 | if (this->getParent()->getCanonicalDecl() == RD->getCanonicalDecl()) | |||
1993 | return this; | |||
1994 | ||||
1995 | // Lookup doesn't work for destructors, so handle them separately. | |||
1996 | if (isa<CXXDestructorDecl>(this)) { | |||
1997 | CXXMethodDecl *MD = RD->getDestructor(); | |||
1998 | if (MD) { | |||
1999 | if (recursivelyOverrides(MD, this)) | |||
2000 | return MD; | |||
2001 | if (MayBeBase && recursivelyOverrides(this, MD)) | |||
2002 | return MD; | |||
2003 | } | |||
2004 | return nullptr; | |||
2005 | } | |||
2006 | ||||
2007 | for (auto *ND : RD->lookup(getDeclName())) { | |||
2008 | auto *MD = dyn_cast<CXXMethodDecl>(ND); | |||
2009 | if (!MD) | |||
2010 | continue; | |||
2011 | if (recursivelyOverrides(MD, this)) | |||
2012 | return MD; | |||
2013 | if (MayBeBase && recursivelyOverrides(this, MD)) | |||
2014 | return MD; | |||
2015 | } | |||
2016 | ||||
2017 | return nullptr; | |||
2018 | } | |||
2019 | ||||
2020 | CXXMethodDecl * | |||
2021 | CXXMethodDecl::getCorrespondingMethodInClass(const CXXRecordDecl *RD, | |||
2022 | bool MayBeBase) { | |||
2023 | if (auto *MD = getCorrespondingMethodDeclaredInClass(RD, MayBeBase)) | |||
2024 | return MD; | |||
2025 | ||||
2026 | for (const auto &I : RD->bases()) { | |||
2027 | const RecordType *RT = I.getType()->getAs<RecordType>(); | |||
2028 | if (!RT) | |||
2029 | continue; | |||
2030 | const auto *Base = cast<CXXRecordDecl>(RT->getDecl()); | |||
2031 | CXXMethodDecl *T = this->getCorrespondingMethodInClass(Base); | |||
2032 | if (T) | |||
2033 | return T; | |||
2034 | } | |||
2035 | ||||
2036 | return nullptr; | |||
2037 | } | |||
2038 | ||||
2039 | CXXMethodDecl *CXXMethodDecl::Create(ASTContext &C, CXXRecordDecl *RD, | |||
2040 | SourceLocation StartLoc, | |||
2041 | const DeclarationNameInfo &NameInfo, | |||
2042 | QualType T, TypeSourceInfo *TInfo, | |||
2043 | StorageClass SC, bool isInline, | |||
2044 | ConstexprSpecKind ConstexprKind, | |||
2045 | SourceLocation EndLocation) { | |||
2046 | return new (C, RD) | |||
2047 | CXXMethodDecl(CXXMethod, C, RD, StartLoc, NameInfo, T, TInfo, SC, | |||
2048 | isInline, ConstexprKind, EndLocation); | |||
2049 | } | |||
2050 | ||||
2051 | CXXMethodDecl *CXXMethodDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2052 | return new (C, ID) CXXMethodDecl( | |||
2053 | CXXMethod, C, nullptr, SourceLocation(), DeclarationNameInfo(), | |||
2054 | QualType(), nullptr, SC_None, false, CSK_unspecified, SourceLocation()); | |||
2055 | } | |||
2056 | ||||
2057 | CXXMethodDecl *CXXMethodDecl::getDevirtualizedMethod(const Expr *Base, | |||
2058 | bool IsAppleKext) { | |||
2059 | assert(isVirtual() && "this method is expected to be virtual")((isVirtual() && "this method is expected to be virtual" ) ? static_cast<void> (0) : __assert_fail ("isVirtual() && \"this method is expected to be virtual\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2059, __PRETTY_FUNCTION__)); | |||
2060 | ||||
2061 | // When building with -fapple-kext, all calls must go through the vtable since | |||
2062 | // the kernel linker can do runtime patching of vtables. | |||
2063 | if (IsAppleKext) | |||
2064 | return nullptr; | |||
2065 | ||||
2066 | // If the member function is marked 'final', we know that it can't be | |||
2067 | // overridden and can therefore devirtualize it unless it's pure virtual. | |||
2068 | if (hasAttr<FinalAttr>()) | |||
2069 | return isPure() ? nullptr : this; | |||
2070 | ||||
2071 | // If Base is unknown, we cannot devirtualize. | |||
2072 | if (!Base) | |||
2073 | return nullptr; | |||
2074 | ||||
2075 | // If the base expression (after skipping derived-to-base conversions) is a | |||
2076 | // class prvalue, then we can devirtualize. | |||
2077 | Base = Base->getBestDynamicClassTypeExpr(); | |||
2078 | if (Base->isRValue() && Base->getType()->isRecordType()) | |||
2079 | return this; | |||
2080 | ||||
2081 | // If we don't even know what we would call, we can't devirtualize. | |||
2082 | const CXXRecordDecl *BestDynamicDecl = Base->getBestDynamicClassType(); | |||
2083 | if (!BestDynamicDecl) | |||
2084 | return nullptr; | |||
2085 | ||||
2086 | // There may be a method corresponding to MD in a derived class. | |||
2087 | CXXMethodDecl *DevirtualizedMethod = | |||
2088 | getCorrespondingMethodInClass(BestDynamicDecl); | |||
2089 | ||||
2090 | // If that method is pure virtual, we can't devirtualize. If this code is | |||
2091 | // reached, the result would be UB, not a direct call to the derived class | |||
2092 | // function, and we can't assume the derived class function is defined. | |||
2093 | if (DevirtualizedMethod->isPure()) | |||
2094 | return nullptr; | |||
2095 | ||||
2096 | // If that method is marked final, we can devirtualize it. | |||
2097 | if (DevirtualizedMethod->hasAttr<FinalAttr>()) | |||
2098 | return DevirtualizedMethod; | |||
2099 | ||||
2100 | // Similarly, if the class itself or its destructor is marked 'final', | |||
2101 | // the class can't be derived from and we can therefore devirtualize the | |||
2102 | // member function call. | |||
2103 | if (BestDynamicDecl->hasAttr<FinalAttr>()) | |||
2104 | return DevirtualizedMethod; | |||
2105 | if (const auto *dtor = BestDynamicDecl->getDestructor()) { | |||
2106 | if (dtor->hasAttr<FinalAttr>()) | |||
2107 | return DevirtualizedMethod; | |||
2108 | } | |||
2109 | ||||
2110 | if (const auto *DRE = dyn_cast<DeclRefExpr>(Base)) { | |||
2111 | if (const auto *VD = dyn_cast<VarDecl>(DRE->getDecl())) | |||
2112 | if (VD->getType()->isRecordType()) | |||
2113 | // This is a record decl. We know the type and can devirtualize it. | |||
2114 | return DevirtualizedMethod; | |||
2115 | ||||
2116 | return nullptr; | |||
2117 | } | |||
2118 | ||||
2119 | // We can devirtualize calls on an object accessed by a class member access | |||
2120 | // expression, since by C++11 [basic.life]p6 we know that it can't refer to | |||
2121 | // a derived class object constructed in the same location. | |||
2122 | if (const auto *ME = dyn_cast<MemberExpr>(Base)) { | |||
2123 | const ValueDecl *VD = ME->getMemberDecl(); | |||
2124 | return VD->getType()->isRecordType() ? DevirtualizedMethod : nullptr; | |||
2125 | } | |||
2126 | ||||
2127 | // Likewise for calls on an object accessed by a (non-reference) pointer to | |||
2128 | // member access. | |||
2129 | if (auto *BO = dyn_cast<BinaryOperator>(Base)) { | |||
2130 | if (BO->isPtrMemOp()) { | |||
2131 | auto *MPT = BO->getRHS()->getType()->castAs<MemberPointerType>(); | |||
2132 | if (MPT->getPointeeType()->isRecordType()) | |||
2133 | return DevirtualizedMethod; | |||
2134 | } | |||
2135 | } | |||
2136 | ||||
2137 | // We can't devirtualize the call. | |||
2138 | return nullptr; | |||
2139 | } | |||
2140 | ||||
2141 | bool CXXMethodDecl::isUsualDeallocationFunction( | |||
2142 | SmallVectorImpl<const FunctionDecl *> &PreventedBy) const { | |||
2143 | assert(PreventedBy.empty() && "PreventedBy is expected to be empty")((PreventedBy.empty() && "PreventedBy is expected to be empty" ) ? static_cast<void> (0) : __assert_fail ("PreventedBy.empty() && \"PreventedBy is expected to be empty\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2143, __PRETTY_FUNCTION__)); | |||
2144 | if (getOverloadedOperator() != OO_Delete && | |||
2145 | getOverloadedOperator() != OO_Array_Delete) | |||
2146 | return false; | |||
2147 | ||||
2148 | // C++ [basic.stc.dynamic.deallocation]p2: | |||
2149 | // A template instance is never a usual deallocation function, | |||
2150 | // regardless of its signature. | |||
2151 | if (getPrimaryTemplate()) | |||
2152 | return false; | |||
2153 | ||||
2154 | // C++ [basic.stc.dynamic.deallocation]p2: | |||
2155 | // If a class T has a member deallocation function named operator delete | |||
2156 | // with exactly one parameter, then that function is a usual (non-placement) | |||
2157 | // deallocation function. [...] | |||
2158 | if (getNumParams() == 1) | |||
2159 | return true; | |||
2160 | unsigned UsualParams = 1; | |||
2161 | ||||
2162 | // C++ P0722: | |||
2163 | // A destroying operator delete is a usual deallocation function if | |||
2164 | // removing the std::destroying_delete_t parameter and changing the | |||
2165 | // first parameter type from T* to void* results in the signature of | |||
2166 | // a usual deallocation function. | |||
2167 | if (isDestroyingOperatorDelete()) | |||
2168 | ++UsualParams; | |||
2169 | ||||
2170 | // C++ <=14 [basic.stc.dynamic.deallocation]p2: | |||
2171 | // [...] If class T does not declare such an operator delete but does | |||
2172 | // declare a member deallocation function named operator delete with | |||
2173 | // exactly two parameters, the second of which has type std::size_t (18.1), | |||
2174 | // then this function is a usual deallocation function. | |||
2175 | // | |||
2176 | // C++17 says a usual deallocation function is one with the signature | |||
2177 | // (void* [, size_t] [, std::align_val_t] [, ...]) | |||
2178 | // and all such functions are usual deallocation functions. It's not clear | |||
2179 | // that allowing varargs functions was intentional. | |||
2180 | ASTContext &Context = getASTContext(); | |||
2181 | if (UsualParams < getNumParams() && | |||
2182 | Context.hasSameUnqualifiedType(getParamDecl(UsualParams)->getType(), | |||
2183 | Context.getSizeType())) | |||
2184 | ++UsualParams; | |||
2185 | ||||
2186 | if (UsualParams < getNumParams() && | |||
2187 | getParamDecl(UsualParams)->getType()->isAlignValT()) | |||
2188 | ++UsualParams; | |||
2189 | ||||
2190 | if (UsualParams != getNumParams()) | |||
2191 | return false; | |||
2192 | ||||
2193 | // In C++17 onwards, all potential usual deallocation functions are actual | |||
2194 | // usual deallocation functions. Honor this behavior when post-C++14 | |||
2195 | // deallocation functions are offered as extensions too. | |||
2196 | // FIXME(EricWF): Destrying Delete should be a language option. How do we | |||
2197 | // handle when destroying delete is used prior to C++17? | |||
2198 | if (Context.getLangOpts().CPlusPlus17 || | |||
2199 | Context.getLangOpts().AlignedAllocation || | |||
2200 | isDestroyingOperatorDelete()) | |||
2201 | return true; | |||
2202 | ||||
2203 | // This function is a usual deallocation function if there are no | |||
2204 | // single-parameter deallocation functions of the same kind. | |||
2205 | DeclContext::lookup_result R = getDeclContext()->lookup(getDeclName()); | |||
2206 | bool Result = true; | |||
2207 | for (const auto *D : R) { | |||
2208 | if (const auto *FD = dyn_cast<FunctionDecl>(D)) { | |||
2209 | if (FD->getNumParams() == 1) { | |||
2210 | PreventedBy.push_back(FD); | |||
2211 | Result = false; | |||
2212 | } | |||
2213 | } | |||
2214 | } | |||
2215 | return Result; | |||
2216 | } | |||
2217 | ||||
2218 | bool CXXMethodDecl::isCopyAssignmentOperator() const { | |||
2219 | // C++0x [class.copy]p17: | |||
2220 | // A user-declared copy assignment operator X::operator= is a non-static | |||
2221 | // non-template member function of class X with exactly one parameter of | |||
2222 | // type X, X&, const X&, volatile X& or const volatile X&. | |||
2223 | if (/*operator=*/getOverloadedOperator() != OO_Equal || | |||
2224 | /*non-static*/ isStatic() || | |||
2225 | /*non-template*/getPrimaryTemplate() || getDescribedFunctionTemplate() || | |||
2226 | getNumParams() != 1) | |||
2227 | return false; | |||
2228 | ||||
2229 | QualType ParamType = getParamDecl(0)->getType(); | |||
2230 | if (const auto *Ref = ParamType->getAs<LValueReferenceType>()) | |||
2231 | ParamType = Ref->getPointeeType(); | |||
2232 | ||||
2233 | ASTContext &Context = getASTContext(); | |||
2234 | QualType ClassType | |||
2235 | = Context.getCanonicalType(Context.getTypeDeclType(getParent())); | |||
2236 | return Context.hasSameUnqualifiedType(ClassType, ParamType); | |||
2237 | } | |||
2238 | ||||
2239 | bool CXXMethodDecl::isMoveAssignmentOperator() const { | |||
2240 | // C++0x [class.copy]p19: | |||
2241 | // A user-declared move assignment operator X::operator= is a non-static | |||
2242 | // non-template member function of class X with exactly one parameter of type | |||
2243 | // X&&, const X&&, volatile X&&, or const volatile X&&. | |||
2244 | if (getOverloadedOperator() != OO_Equal || isStatic() || | |||
2245 | getPrimaryTemplate() || getDescribedFunctionTemplate() || | |||
2246 | getNumParams() != 1) | |||
2247 | return false; | |||
2248 | ||||
2249 | QualType ParamType = getParamDecl(0)->getType(); | |||
2250 | if (!isa<RValueReferenceType>(ParamType)) | |||
2251 | return false; | |||
2252 | ParamType = ParamType->getPointeeType(); | |||
2253 | ||||
2254 | ASTContext &Context = getASTContext(); | |||
2255 | QualType ClassType | |||
2256 | = Context.getCanonicalType(Context.getTypeDeclType(getParent())); | |||
2257 | return Context.hasSameUnqualifiedType(ClassType, ParamType); | |||
2258 | } | |||
2259 | ||||
2260 | void CXXMethodDecl::addOverriddenMethod(const CXXMethodDecl *MD) { | |||
2261 | assert(MD->isCanonicalDecl() && "Method is not canonical!")((MD->isCanonicalDecl() && "Method is not canonical!" ) ? static_cast<void> (0) : __assert_fail ("MD->isCanonicalDecl() && \"Method is not canonical!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2261, __PRETTY_FUNCTION__)); | |||
2262 | assert(!MD->getParent()->isDependentContext() &&((!MD->getParent()->isDependentContext() && "Can't add an overridden method to a class template!" ) ? static_cast<void> (0) : __assert_fail ("!MD->getParent()->isDependentContext() && \"Can't add an overridden method to a class template!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2263, __PRETTY_FUNCTION__)) | |||
2263 | "Can't add an overridden method to a class template!")((!MD->getParent()->isDependentContext() && "Can't add an overridden method to a class template!" ) ? static_cast<void> (0) : __assert_fail ("!MD->getParent()->isDependentContext() && \"Can't add an overridden method to a class template!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2263, __PRETTY_FUNCTION__)); | |||
2264 | assert(MD->isVirtual() && "Method is not virtual!")((MD->isVirtual() && "Method is not virtual!") ? static_cast <void> (0) : __assert_fail ("MD->isVirtual() && \"Method is not virtual!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2264, __PRETTY_FUNCTION__)); | |||
2265 | ||||
2266 | getASTContext().addOverriddenMethod(this, MD); | |||
2267 | } | |||
2268 | ||||
2269 | CXXMethodDecl::method_iterator CXXMethodDecl::begin_overridden_methods() const { | |||
2270 | if (isa<CXXConstructorDecl>(this)) return nullptr; | |||
2271 | return getASTContext().overridden_methods_begin(this); | |||
2272 | } | |||
2273 | ||||
2274 | CXXMethodDecl::method_iterator CXXMethodDecl::end_overridden_methods() const { | |||
2275 | if (isa<CXXConstructorDecl>(this)) return nullptr; | |||
2276 | return getASTContext().overridden_methods_end(this); | |||
2277 | } | |||
2278 | ||||
2279 | unsigned CXXMethodDecl::size_overridden_methods() const { | |||
2280 | if (isa<CXXConstructorDecl>(this)) return 0; | |||
2281 | return getASTContext().overridden_methods_size(this); | |||
2282 | } | |||
2283 | ||||
2284 | CXXMethodDecl::overridden_method_range | |||
2285 | CXXMethodDecl::overridden_methods() const { | |||
2286 | if (isa<CXXConstructorDecl>(this)) | |||
2287 | return overridden_method_range(nullptr, nullptr); | |||
2288 | return getASTContext().overridden_methods(this); | |||
2289 | } | |||
2290 | ||||
2291 | static QualType getThisObjectType(ASTContext &C, const FunctionProtoType *FPT, | |||
2292 | const CXXRecordDecl *Decl) { | |||
2293 | QualType ClassTy = C.getTypeDeclType(Decl); | |||
2294 | return C.getQualifiedType(ClassTy, FPT->getMethodQuals()); | |||
| ||||
2295 | } | |||
2296 | ||||
2297 | QualType CXXMethodDecl::getThisType(const FunctionProtoType *FPT, | |||
2298 | const CXXRecordDecl *Decl) { | |||
2299 | ASTContext &C = Decl->getASTContext(); | |||
2300 | QualType ObjectTy = ::getThisObjectType(C, FPT, Decl); | |||
2301 | return C.getPointerType(ObjectTy); | |||
2302 | } | |||
2303 | ||||
2304 | QualType CXXMethodDecl::getThisObjectType(const FunctionProtoType *FPT, | |||
2305 | const CXXRecordDecl *Decl) { | |||
2306 | ASTContext &C = Decl->getASTContext(); | |||
2307 | return ::getThisObjectType(C, FPT, Decl); | |||
2308 | } | |||
2309 | ||||
2310 | QualType CXXMethodDecl::getThisType() const { | |||
2311 | // C++ 9.3.2p1: The type of this in a member function of a class X is X*. | |||
2312 | // If the member function is declared const, the type of this is const X*, | |||
2313 | // if the member function is declared volatile, the type of this is | |||
2314 | // volatile X*, and if the member function is declared const volatile, | |||
2315 | // the type of this is const volatile X*. | |||
2316 | assert(isInstance() && "No 'this' for static methods!")((isInstance() && "No 'this' for static methods!") ? static_cast <void> (0) : __assert_fail ("isInstance() && \"No 'this' for static methods!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2316, __PRETTY_FUNCTION__)); | |||
2317 | ||||
2318 | return CXXMethodDecl::getThisType(getType()->getAs<FunctionProtoType>(), | |||
2319 | getParent()); | |||
2320 | } | |||
2321 | ||||
2322 | QualType CXXMethodDecl::getThisObjectType() const { | |||
2323 | // Ditto getThisType. | |||
2324 | assert(isInstance() && "No 'this' for static methods!")((isInstance() && "No 'this' for static methods!") ? static_cast <void> (0) : __assert_fail ("isInstance() && \"No 'this' for static methods!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2324, __PRETTY_FUNCTION__)); | |||
| ||||
2325 | ||||
2326 | return CXXMethodDecl::getThisObjectType(getType()->getAs<FunctionProtoType>(), | |||
2327 | getParent()); | |||
2328 | } | |||
2329 | ||||
2330 | bool CXXMethodDecl::hasInlineBody() const { | |||
2331 | // If this function is a template instantiation, look at the template from | |||
2332 | // which it was instantiated. | |||
2333 | const FunctionDecl *CheckFn = getTemplateInstantiationPattern(); | |||
2334 | if (!CheckFn) | |||
2335 | CheckFn = this; | |||
2336 | ||||
2337 | const FunctionDecl *fn; | |||
2338 | return CheckFn->isDefined(fn) && !fn->isOutOfLine() && | |||
2339 | (fn->doesThisDeclarationHaveABody() || fn->willHaveBody()); | |||
2340 | } | |||
2341 | ||||
2342 | bool CXXMethodDecl::isLambdaStaticInvoker() const { | |||
2343 | const CXXRecordDecl *P = getParent(); | |||
2344 | if (P->isLambda()) { | |||
2345 | if (const CXXMethodDecl *StaticInvoker = P->getLambdaStaticInvoker()) { | |||
2346 | if (StaticInvoker == this) return true; | |||
2347 | if (P->isGenericLambda() && this->isFunctionTemplateSpecialization()) | |||
2348 | return StaticInvoker == this->getPrimaryTemplate()->getTemplatedDecl(); | |||
2349 | } | |||
2350 | } | |||
2351 | return false; | |||
2352 | } | |||
2353 | ||||
2354 | CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, | |||
2355 | TypeSourceInfo *TInfo, bool IsVirtual, | |||
2356 | SourceLocation L, Expr *Init, | |||
2357 | SourceLocation R, | |||
2358 | SourceLocation EllipsisLoc) | |||
2359 | : Initializee(TInfo), MemberOrEllipsisLocation(EllipsisLoc), Init(Init), | |||
2360 | LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(IsVirtual), | |||
2361 | IsWritten(false), SourceOrder(0) {} | |||
2362 | ||||
2363 | CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, | |||
2364 | FieldDecl *Member, | |||
2365 | SourceLocation MemberLoc, | |||
2366 | SourceLocation L, Expr *Init, | |||
2367 | SourceLocation R) | |||
2368 | : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init), | |||
2369 | LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false), | |||
2370 | IsWritten(false), SourceOrder(0) {} | |||
2371 | ||||
2372 | CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, | |||
2373 | IndirectFieldDecl *Member, | |||
2374 | SourceLocation MemberLoc, | |||
2375 | SourceLocation L, Expr *Init, | |||
2376 | SourceLocation R) | |||
2377 | : Initializee(Member), MemberOrEllipsisLocation(MemberLoc), Init(Init), | |||
2378 | LParenLoc(L), RParenLoc(R), IsDelegating(false), IsVirtual(false), | |||
2379 | IsWritten(false), SourceOrder(0) {} | |||
2380 | ||||
2381 | CXXCtorInitializer::CXXCtorInitializer(ASTContext &Context, | |||
2382 | TypeSourceInfo *TInfo, | |||
2383 | SourceLocation L, Expr *Init, | |||
2384 | SourceLocation R) | |||
2385 | : Initializee(TInfo), Init(Init), LParenLoc(L), RParenLoc(R), | |||
2386 | IsDelegating(true), IsVirtual(false), IsWritten(false), SourceOrder(0) {} | |||
2387 | ||||
2388 | int64_t CXXCtorInitializer::getID(const ASTContext &Context) const { | |||
2389 | return Context.getAllocator() | |||
2390 | .identifyKnownAlignedObject<CXXCtorInitializer>(this); | |||
2391 | } | |||
2392 | ||||
2393 | TypeLoc CXXCtorInitializer::getBaseClassLoc() const { | |||
2394 | if (isBaseInitializer()) | |||
2395 | return Initializee.get<TypeSourceInfo*>()->getTypeLoc(); | |||
2396 | else | |||
2397 | return {}; | |||
2398 | } | |||
2399 | ||||
2400 | const Type *CXXCtorInitializer::getBaseClass() const { | |||
2401 | if (isBaseInitializer()) | |||
2402 | return Initializee.get<TypeSourceInfo*>()->getType().getTypePtr(); | |||
2403 | else | |||
2404 | return nullptr; | |||
2405 | } | |||
2406 | ||||
2407 | SourceLocation CXXCtorInitializer::getSourceLocation() const { | |||
2408 | if (isInClassMemberInitializer()) | |||
2409 | return getAnyMember()->getLocation(); | |||
2410 | ||||
2411 | if (isAnyMemberInitializer()) | |||
2412 | return getMemberLocation(); | |||
2413 | ||||
2414 | if (const auto *TSInfo = Initializee.get<TypeSourceInfo *>()) | |||
2415 | return TSInfo->getTypeLoc().getLocalSourceRange().getBegin(); | |||
2416 | ||||
2417 | return {}; | |||
2418 | } | |||
2419 | ||||
2420 | SourceRange CXXCtorInitializer::getSourceRange() const { | |||
2421 | if (isInClassMemberInitializer()) { | |||
2422 | FieldDecl *D = getAnyMember(); | |||
2423 | if (Expr *I = D->getInClassInitializer()) | |||
2424 | return I->getSourceRange(); | |||
2425 | return {}; | |||
2426 | } | |||
2427 | ||||
2428 | return SourceRange(getSourceLocation(), getRParenLoc()); | |||
2429 | } | |||
2430 | ||||
2431 | CXXConstructorDecl::CXXConstructorDecl( | |||
2432 | ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc, | |||
2433 | const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo, | |||
2434 | ExplicitSpecifier ES, bool isInline, bool isImplicitlyDeclared, | |||
2435 | ConstexprSpecKind ConstexprKind, InheritedConstructor Inherited) | |||
2436 | : CXXMethodDecl(CXXConstructor, C, RD, StartLoc, NameInfo, T, TInfo, | |||
2437 | SC_None, isInline, ConstexprKind, SourceLocation()) { | |||
2438 | setNumCtorInitializers(0); | |||
2439 | setInheritingConstructor(static_cast<bool>(Inherited)); | |||
2440 | setImplicit(isImplicitlyDeclared); | |||
2441 | CXXConstructorDeclBits.HasTrailingExplicitSpecifier = ES.getExpr() ? 1 : 0; | |||
2442 | if (Inherited) | |||
2443 | *getTrailingObjects<InheritedConstructor>() = Inherited; | |||
2444 | setExplicitSpecifier(ES); | |||
2445 | } | |||
2446 | ||||
2447 | void CXXConstructorDecl::anchor() {} | |||
2448 | ||||
2449 | CXXConstructorDecl *CXXConstructorDecl::CreateDeserialized(ASTContext &C, | |||
2450 | unsigned ID, | |||
2451 | uint64_t AllocKind) { | |||
2452 | bool hasTraillingExplicit = static_cast<bool>(AllocKind & TAKHasTailExplicit); | |||
2453 | bool isInheritingConstructor = | |||
2454 | static_cast<bool>(AllocKind & TAKInheritsConstructor); | |||
2455 | unsigned Extra = | |||
2456 | additionalSizeToAlloc<InheritedConstructor, ExplicitSpecifier>( | |||
2457 | isInheritingConstructor, hasTraillingExplicit); | |||
2458 | auto *Result = new (C, ID, Extra) | |||
2459 | CXXConstructorDecl(C, nullptr, SourceLocation(), DeclarationNameInfo(), | |||
2460 | QualType(), nullptr, ExplicitSpecifier(), false, false, | |||
2461 | CSK_unspecified, InheritedConstructor()); | |||
2462 | Result->setInheritingConstructor(isInheritingConstructor); | |||
2463 | Result->CXXConstructorDeclBits.HasTrailingExplicitSpecifier = | |||
2464 | hasTraillingExplicit; | |||
2465 | Result->setExplicitSpecifier(ExplicitSpecifier()); | |||
2466 | return Result; | |||
2467 | } | |||
2468 | ||||
2469 | CXXConstructorDecl *CXXConstructorDecl::Create( | |||
2470 | ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc, | |||
2471 | const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo, | |||
2472 | ExplicitSpecifier ES, bool isInline, bool isImplicitlyDeclared, | |||
2473 | ConstexprSpecKind ConstexprKind, InheritedConstructor Inherited) { | |||
2474 | assert(NameInfo.getName().getNameKind()((NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName && "Name must refer to a constructor") ? static_cast <void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName && \"Name must refer to a constructor\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2476, __PRETTY_FUNCTION__)) | |||
2475 | == DeclarationName::CXXConstructorName &&((NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName && "Name must refer to a constructor") ? static_cast <void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName && \"Name must refer to a constructor\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2476, __PRETTY_FUNCTION__)) | |||
2476 | "Name must refer to a constructor")((NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName && "Name must refer to a constructor") ? static_cast <void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXConstructorName && \"Name must refer to a constructor\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2476, __PRETTY_FUNCTION__)); | |||
2477 | unsigned Extra = | |||
2478 | additionalSizeToAlloc<InheritedConstructor, ExplicitSpecifier>( | |||
2479 | Inherited ? 1 : 0, ES.getExpr() ? 1 : 0); | |||
2480 | return new (C, RD, Extra) | |||
2481 | CXXConstructorDecl(C, RD, StartLoc, NameInfo, T, TInfo, ES, isInline, | |||
2482 | isImplicitlyDeclared, ConstexprKind, Inherited); | |||
2483 | } | |||
2484 | ||||
2485 | CXXConstructorDecl::init_const_iterator CXXConstructorDecl::init_begin() const { | |||
2486 | return CtorInitializers.get(getASTContext().getExternalSource()); | |||
2487 | } | |||
2488 | ||||
2489 | CXXConstructorDecl *CXXConstructorDecl::getTargetConstructor() const { | |||
2490 | assert(isDelegatingConstructor() && "Not a delegating constructor!")((isDelegatingConstructor() && "Not a delegating constructor!" ) ? static_cast<void> (0) : __assert_fail ("isDelegatingConstructor() && \"Not a delegating constructor!\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2490, __PRETTY_FUNCTION__)); | |||
2491 | Expr *E = (*init_begin())->getInit()->IgnoreImplicit(); | |||
2492 | if (const auto *Construct = dyn_cast<CXXConstructExpr>(E)) | |||
2493 | return Construct->getConstructor(); | |||
2494 | ||||
2495 | return nullptr; | |||
2496 | } | |||
2497 | ||||
2498 | bool CXXConstructorDecl::isDefaultConstructor() const { | |||
2499 | // C++ [class.ctor]p5: | |||
2500 | // A default constructor for a class X is a constructor of class | |||
2501 | // X that can be called without an argument. | |||
2502 | return (getNumParams() == 0) || | |||
2503 | (getNumParams() > 0 && getParamDecl(0)->hasDefaultArg()); | |||
2504 | } | |||
2505 | ||||
2506 | bool | |||
2507 | CXXConstructorDecl::isCopyConstructor(unsigned &TypeQuals) const { | |||
2508 | return isCopyOrMoveConstructor(TypeQuals) && | |||
2509 | getParamDecl(0)->getType()->isLValueReferenceType(); | |||
2510 | } | |||
2511 | ||||
2512 | bool CXXConstructorDecl::isMoveConstructor(unsigned &TypeQuals) const { | |||
2513 | return isCopyOrMoveConstructor(TypeQuals) && | |||
2514 | getParamDecl(0)->getType()->isRValueReferenceType(); | |||
2515 | } | |||
2516 | ||||
2517 | /// Determine whether this is a copy or move constructor. | |||
2518 | bool CXXConstructorDecl::isCopyOrMoveConstructor(unsigned &TypeQuals) const { | |||
2519 | // C++ [class.copy]p2: | |||
2520 | // A non-template constructor for class X is a copy constructor | |||
2521 | // if its first parameter is of type X&, const X&, volatile X& or | |||
2522 | // const volatile X&, and either there are no other parameters | |||
2523 | // or else all other parameters have default arguments (8.3.6). | |||
2524 | // C++0x [class.copy]p3: | |||
2525 | // A non-template constructor for class X is a move constructor if its | |||
2526 | // first parameter is of type X&&, const X&&, volatile X&&, or | |||
2527 | // const volatile X&&, and either there are no other parameters or else | |||
2528 | // all other parameters have default arguments. | |||
2529 | if ((getNumParams() < 1) || | |||
2530 | (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) || | |||
2531 | (getPrimaryTemplate() != nullptr) || | |||
2532 | (getDescribedFunctionTemplate() != nullptr)) | |||
2533 | return false; | |||
2534 | ||||
2535 | const ParmVarDecl *Param = getParamDecl(0); | |||
2536 | ||||
2537 | // Do we have a reference type? | |||
2538 | const auto *ParamRefType = Param->getType()->getAs<ReferenceType>(); | |||
2539 | if (!ParamRefType) | |||
2540 | return false; | |||
2541 | ||||
2542 | // Is it a reference to our class type? | |||
2543 | ASTContext &Context = getASTContext(); | |||
2544 | ||||
2545 | CanQualType PointeeType | |||
2546 | = Context.getCanonicalType(ParamRefType->getPointeeType()); | |||
2547 | CanQualType ClassTy | |||
2548 | = Context.getCanonicalType(Context.getTagDeclType(getParent())); | |||
2549 | if (PointeeType.getUnqualifiedType() != ClassTy) | |||
2550 | return false; | |||
2551 | ||||
2552 | // FIXME: other qualifiers? | |||
2553 | ||||
2554 | // We have a copy or move constructor. | |||
2555 | TypeQuals = PointeeType.getCVRQualifiers(); | |||
2556 | return true; | |||
2557 | } | |||
2558 | ||||
2559 | bool CXXConstructorDecl::isConvertingConstructor(bool AllowExplicit) const { | |||
2560 | // C++ [class.conv.ctor]p1: | |||
2561 | // A constructor declared without the function-specifier explicit | |||
2562 | // that can be called with a single parameter specifies a | |||
2563 | // conversion from the type of its first parameter to the type of | |||
2564 | // its class. Such a constructor is called a converting | |||
2565 | // constructor. | |||
2566 | if (isExplicit() && !AllowExplicit) | |||
2567 | return false; | |||
2568 | ||||
2569 | return (getNumParams() == 0 && | |||
2570 | getType()->castAs<FunctionProtoType>()->isVariadic()) || | |||
2571 | (getNumParams() == 1) || | |||
2572 | (getNumParams() > 1 && | |||
2573 | (getParamDecl(1)->hasDefaultArg() || | |||
2574 | getParamDecl(1)->isParameterPack())); | |||
2575 | } | |||
2576 | ||||
2577 | bool CXXConstructorDecl::isSpecializationCopyingObject() const { | |||
2578 | if ((getNumParams() < 1) || | |||
2579 | (getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) || | |||
2580 | (getDescribedFunctionTemplate() != nullptr)) | |||
2581 | return false; | |||
2582 | ||||
2583 | const ParmVarDecl *Param = getParamDecl(0); | |||
2584 | ||||
2585 | ASTContext &Context = getASTContext(); | |||
2586 | CanQualType ParamType = Context.getCanonicalType(Param->getType()); | |||
2587 | ||||
2588 | // Is it the same as our class type? | |||
2589 | CanQualType ClassTy | |||
2590 | = Context.getCanonicalType(Context.getTagDeclType(getParent())); | |||
2591 | if (ParamType.getUnqualifiedType() != ClassTy) | |||
2592 | return false; | |||
2593 | ||||
2594 | return true; | |||
2595 | } | |||
2596 | ||||
2597 | void CXXDestructorDecl::anchor() {} | |||
2598 | ||||
2599 | CXXDestructorDecl * | |||
2600 | CXXDestructorDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2601 | return new (C, ID) | |||
2602 | CXXDestructorDecl(C, nullptr, SourceLocation(), DeclarationNameInfo(), | |||
2603 | QualType(), nullptr, false, false, CSK_unspecified); | |||
2604 | } | |||
2605 | ||||
2606 | CXXDestructorDecl *CXXDestructorDecl::Create( | |||
2607 | ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc, | |||
2608 | const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo, | |||
2609 | bool isInline, bool isImplicitlyDeclared, ConstexprSpecKind ConstexprKind) { | |||
2610 | assert(NameInfo.getName().getNameKind()((NameInfo.getName().getNameKind() == DeclarationName::CXXDestructorName && "Name must refer to a destructor") ? static_cast< void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXDestructorName && \"Name must refer to a destructor\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2612, __PRETTY_FUNCTION__)) | |||
2611 | == DeclarationName::CXXDestructorName &&((NameInfo.getName().getNameKind() == DeclarationName::CXXDestructorName && "Name must refer to a destructor") ? static_cast< void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXDestructorName && \"Name must refer to a destructor\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2612, __PRETTY_FUNCTION__)) | |||
2612 | "Name must refer to a destructor")((NameInfo.getName().getNameKind() == DeclarationName::CXXDestructorName && "Name must refer to a destructor") ? static_cast< void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXDestructorName && \"Name must refer to a destructor\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2612, __PRETTY_FUNCTION__)); | |||
2613 | return new (C, RD) | |||
2614 | CXXDestructorDecl(C, RD, StartLoc, NameInfo, T, TInfo, isInline, | |||
2615 | isImplicitlyDeclared, ConstexprKind); | |||
2616 | } | |||
2617 | ||||
2618 | void CXXDestructorDecl::setOperatorDelete(FunctionDecl *OD, Expr *ThisArg) { | |||
2619 | auto *First = cast<CXXDestructorDecl>(getFirstDecl()); | |||
2620 | if (OD && !First->OperatorDelete) { | |||
2621 | First->OperatorDelete = OD; | |||
2622 | First->OperatorDeleteThisArg = ThisArg; | |||
2623 | if (auto *L = getASTMutationListener()) | |||
2624 | L->ResolvedOperatorDelete(First, OD, ThisArg); | |||
2625 | } | |||
2626 | } | |||
2627 | ||||
2628 | void CXXConversionDecl::anchor() {} | |||
2629 | ||||
2630 | CXXConversionDecl * | |||
2631 | CXXConversionDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2632 | return new (C, ID) CXXConversionDecl( | |||
2633 | C, nullptr, SourceLocation(), DeclarationNameInfo(), QualType(), nullptr, | |||
2634 | false, ExplicitSpecifier(), CSK_unspecified, SourceLocation()); | |||
2635 | } | |||
2636 | ||||
2637 | CXXConversionDecl *CXXConversionDecl::Create( | |||
2638 | ASTContext &C, CXXRecordDecl *RD, SourceLocation StartLoc, | |||
2639 | const DeclarationNameInfo &NameInfo, QualType T, TypeSourceInfo *TInfo, | |||
2640 | bool isInline, ExplicitSpecifier ES, ConstexprSpecKind ConstexprKind, | |||
2641 | SourceLocation EndLocation) { | |||
2642 | assert(NameInfo.getName().getNameKind()((NameInfo.getName().getNameKind() == DeclarationName::CXXConversionFunctionName && "Name must refer to a conversion function") ? static_cast <void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXConversionFunctionName && \"Name must refer to a conversion function\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2644, __PRETTY_FUNCTION__)) | |||
2643 | == DeclarationName::CXXConversionFunctionName &&((NameInfo.getName().getNameKind() == DeclarationName::CXXConversionFunctionName && "Name must refer to a conversion function") ? static_cast <void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXConversionFunctionName && \"Name must refer to a conversion function\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2644, __PRETTY_FUNCTION__)) | |||
2644 | "Name must refer to a conversion function")((NameInfo.getName().getNameKind() == DeclarationName::CXXConversionFunctionName && "Name must refer to a conversion function") ? static_cast <void> (0) : __assert_fail ("NameInfo.getName().getNameKind() == DeclarationName::CXXConversionFunctionName && \"Name must refer to a conversion function\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2644, __PRETTY_FUNCTION__)); | |||
2645 | return new (C, RD) | |||
2646 | CXXConversionDecl(C, RD, StartLoc, NameInfo, T, TInfo, isInline, ES, | |||
2647 | ConstexprKind, EndLocation); | |||
2648 | } | |||
2649 | ||||
2650 | bool CXXConversionDecl::isLambdaToBlockPointerConversion() const { | |||
2651 | return isImplicit() && getParent()->isLambda() && | |||
2652 | getConversionType()->isBlockPointerType(); | |||
2653 | } | |||
2654 | ||||
2655 | LinkageSpecDecl::LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc, | |||
2656 | SourceLocation LangLoc, LanguageIDs lang, | |||
2657 | bool HasBraces) | |||
2658 | : Decl(LinkageSpec, DC, LangLoc), DeclContext(LinkageSpec), | |||
2659 | ExternLoc(ExternLoc), RBraceLoc(SourceLocation()) { | |||
2660 | setLanguage(lang); | |||
2661 | LinkageSpecDeclBits.HasBraces = HasBraces; | |||
2662 | } | |||
2663 | ||||
2664 | void LinkageSpecDecl::anchor() {} | |||
2665 | ||||
2666 | LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C, | |||
2667 | DeclContext *DC, | |||
2668 | SourceLocation ExternLoc, | |||
2669 | SourceLocation LangLoc, | |||
2670 | LanguageIDs Lang, | |||
2671 | bool HasBraces) { | |||
2672 | return new (C, DC) LinkageSpecDecl(DC, ExternLoc, LangLoc, Lang, HasBraces); | |||
2673 | } | |||
2674 | ||||
2675 | LinkageSpecDecl *LinkageSpecDecl::CreateDeserialized(ASTContext &C, | |||
2676 | unsigned ID) { | |||
2677 | return new (C, ID) LinkageSpecDecl(nullptr, SourceLocation(), | |||
2678 | SourceLocation(), lang_c, false); | |||
2679 | } | |||
2680 | ||||
2681 | void UsingDirectiveDecl::anchor() {} | |||
2682 | ||||
2683 | UsingDirectiveDecl *UsingDirectiveDecl::Create(ASTContext &C, DeclContext *DC, | |||
2684 | SourceLocation L, | |||
2685 | SourceLocation NamespaceLoc, | |||
2686 | NestedNameSpecifierLoc QualifierLoc, | |||
2687 | SourceLocation IdentLoc, | |||
2688 | NamedDecl *Used, | |||
2689 | DeclContext *CommonAncestor) { | |||
2690 | if (auto *NS = dyn_cast_or_null<NamespaceDecl>(Used)) | |||
2691 | Used = NS->getOriginalNamespace(); | |||
2692 | return new (C, DC) UsingDirectiveDecl(DC, L, NamespaceLoc, QualifierLoc, | |||
2693 | IdentLoc, Used, CommonAncestor); | |||
2694 | } | |||
2695 | ||||
2696 | UsingDirectiveDecl *UsingDirectiveDecl::CreateDeserialized(ASTContext &C, | |||
2697 | unsigned ID) { | |||
2698 | return new (C, ID) UsingDirectiveDecl(nullptr, SourceLocation(), | |||
2699 | SourceLocation(), | |||
2700 | NestedNameSpecifierLoc(), | |||
2701 | SourceLocation(), nullptr, nullptr); | |||
2702 | } | |||
2703 | ||||
2704 | NamespaceDecl *UsingDirectiveDecl::getNominatedNamespace() { | |||
2705 | if (auto *NA = dyn_cast_or_null<NamespaceAliasDecl>(NominatedNamespace)) | |||
2706 | return NA->getNamespace(); | |||
2707 | return cast_or_null<NamespaceDecl>(NominatedNamespace); | |||
2708 | } | |||
2709 | ||||
2710 | NamespaceDecl::NamespaceDecl(ASTContext &C, DeclContext *DC, bool Inline, | |||
2711 | SourceLocation StartLoc, SourceLocation IdLoc, | |||
2712 | IdentifierInfo *Id, NamespaceDecl *PrevDecl) | |||
2713 | : NamedDecl(Namespace, DC, IdLoc, Id), DeclContext(Namespace), | |||
2714 | redeclarable_base(C), LocStart(StartLoc), | |||
2715 | AnonOrFirstNamespaceAndInline(nullptr, Inline) { | |||
2716 | setPreviousDecl(PrevDecl); | |||
2717 | ||||
2718 | if (PrevDecl) | |||
2719 | AnonOrFirstNamespaceAndInline.setPointer(PrevDecl->getOriginalNamespace()); | |||
2720 | } | |||
2721 | ||||
2722 | NamespaceDecl *NamespaceDecl::Create(ASTContext &C, DeclContext *DC, | |||
2723 | bool Inline, SourceLocation StartLoc, | |||
2724 | SourceLocation IdLoc, IdentifierInfo *Id, | |||
2725 | NamespaceDecl *PrevDecl) { | |||
2726 | return new (C, DC) NamespaceDecl(C, DC, Inline, StartLoc, IdLoc, Id, | |||
2727 | PrevDecl); | |||
2728 | } | |||
2729 | ||||
2730 | NamespaceDecl *NamespaceDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2731 | return new (C, ID) NamespaceDecl(C, nullptr, false, SourceLocation(), | |||
2732 | SourceLocation(), nullptr, nullptr); | |||
2733 | } | |||
2734 | ||||
2735 | NamespaceDecl *NamespaceDecl::getOriginalNamespace() { | |||
2736 | if (isFirstDecl()) | |||
2737 | return this; | |||
2738 | ||||
2739 | return AnonOrFirstNamespaceAndInline.getPointer(); | |||
2740 | } | |||
2741 | ||||
2742 | const NamespaceDecl *NamespaceDecl::getOriginalNamespace() const { | |||
2743 | if (isFirstDecl()) | |||
2744 | return this; | |||
2745 | ||||
2746 | return AnonOrFirstNamespaceAndInline.getPointer(); | |||
2747 | } | |||
2748 | ||||
2749 | bool NamespaceDecl::isOriginalNamespace() const { return isFirstDecl(); } | |||
2750 | ||||
2751 | NamespaceDecl *NamespaceDecl::getNextRedeclarationImpl() { | |||
2752 | return getNextRedeclaration(); | |||
2753 | } | |||
2754 | ||||
2755 | NamespaceDecl *NamespaceDecl::getPreviousDeclImpl() { | |||
2756 | return getPreviousDecl(); | |||
2757 | } | |||
2758 | ||||
2759 | NamespaceDecl *NamespaceDecl::getMostRecentDeclImpl() { | |||
2760 | return getMostRecentDecl(); | |||
2761 | } | |||
2762 | ||||
2763 | void NamespaceAliasDecl::anchor() {} | |||
2764 | ||||
2765 | NamespaceAliasDecl *NamespaceAliasDecl::getNextRedeclarationImpl() { | |||
2766 | return getNextRedeclaration(); | |||
2767 | } | |||
2768 | ||||
2769 | NamespaceAliasDecl *NamespaceAliasDecl::getPreviousDeclImpl() { | |||
2770 | return getPreviousDecl(); | |||
2771 | } | |||
2772 | ||||
2773 | NamespaceAliasDecl *NamespaceAliasDecl::getMostRecentDeclImpl() { | |||
2774 | return getMostRecentDecl(); | |||
2775 | } | |||
2776 | ||||
2777 | NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC, | |||
2778 | SourceLocation UsingLoc, | |||
2779 | SourceLocation AliasLoc, | |||
2780 | IdentifierInfo *Alias, | |||
2781 | NestedNameSpecifierLoc QualifierLoc, | |||
2782 | SourceLocation IdentLoc, | |||
2783 | NamedDecl *Namespace) { | |||
2784 | // FIXME: Preserve the aliased namespace as written. | |||
2785 | if (auto *NS = dyn_cast_or_null<NamespaceDecl>(Namespace)) | |||
2786 | Namespace = NS->getOriginalNamespace(); | |||
2787 | return new (C, DC) NamespaceAliasDecl(C, DC, UsingLoc, AliasLoc, Alias, | |||
2788 | QualifierLoc, IdentLoc, Namespace); | |||
2789 | } | |||
2790 | ||||
2791 | NamespaceAliasDecl * | |||
2792 | NamespaceAliasDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2793 | return new (C, ID) NamespaceAliasDecl(C, nullptr, SourceLocation(), | |||
2794 | SourceLocation(), nullptr, | |||
2795 | NestedNameSpecifierLoc(), | |||
2796 | SourceLocation(), nullptr); | |||
2797 | } | |||
2798 | ||||
2799 | void UsingShadowDecl::anchor() {} | |||
2800 | ||||
2801 | UsingShadowDecl::UsingShadowDecl(Kind K, ASTContext &C, DeclContext *DC, | |||
2802 | SourceLocation Loc, UsingDecl *Using, | |||
2803 | NamedDecl *Target) | |||
2804 | : NamedDecl(K, DC, Loc, Using ? Using->getDeclName() : DeclarationName()), | |||
2805 | redeclarable_base(C), UsingOrNextShadow(cast<NamedDecl>(Using)) { | |||
2806 | if (Target) | |||
2807 | setTargetDecl(Target); | |||
2808 | setImplicit(); | |||
2809 | } | |||
2810 | ||||
2811 | UsingShadowDecl::UsingShadowDecl(Kind K, ASTContext &C, EmptyShell Empty) | |||
2812 | : NamedDecl(K, nullptr, SourceLocation(), DeclarationName()), | |||
2813 | redeclarable_base(C) {} | |||
2814 | ||||
2815 | UsingShadowDecl * | |||
2816 | UsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2817 | return new (C, ID) UsingShadowDecl(UsingShadow, C, EmptyShell()); | |||
2818 | } | |||
2819 | ||||
2820 | UsingDecl *UsingShadowDecl::getUsingDecl() const { | |||
2821 | const UsingShadowDecl *Shadow = this; | |||
2822 | while (const auto *NextShadow = | |||
2823 | dyn_cast<UsingShadowDecl>(Shadow->UsingOrNextShadow)) | |||
2824 | Shadow = NextShadow; | |||
2825 | return cast<UsingDecl>(Shadow->UsingOrNextShadow); | |||
2826 | } | |||
2827 | ||||
2828 | void ConstructorUsingShadowDecl::anchor() {} | |||
2829 | ||||
2830 | ConstructorUsingShadowDecl * | |||
2831 | ConstructorUsingShadowDecl::Create(ASTContext &C, DeclContext *DC, | |||
2832 | SourceLocation Loc, UsingDecl *Using, | |||
2833 | NamedDecl *Target, bool IsVirtual) { | |||
2834 | return new (C, DC) ConstructorUsingShadowDecl(C, DC, Loc, Using, Target, | |||
2835 | IsVirtual); | |||
2836 | } | |||
2837 | ||||
2838 | ConstructorUsingShadowDecl * | |||
2839 | ConstructorUsingShadowDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2840 | return new (C, ID) ConstructorUsingShadowDecl(C, EmptyShell()); | |||
2841 | } | |||
2842 | ||||
2843 | CXXRecordDecl *ConstructorUsingShadowDecl::getNominatedBaseClass() const { | |||
2844 | return getUsingDecl()->getQualifier()->getAsRecordDecl(); | |||
2845 | } | |||
2846 | ||||
2847 | void UsingDecl::anchor() {} | |||
2848 | ||||
2849 | void UsingDecl::addShadowDecl(UsingShadowDecl *S) { | |||
2850 | assert(std::find(shadow_begin(), shadow_end(), S) == shadow_end() &&((std::find(shadow_begin(), shadow_end(), S) == shadow_end() && "declaration already in set") ? static_cast<void> (0) : __assert_fail ("std::find(shadow_begin(), shadow_end(), S) == shadow_end() && \"declaration already in set\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2851, __PRETTY_FUNCTION__)) | |||
2851 | "declaration already in set")((std::find(shadow_begin(), shadow_end(), S) == shadow_end() && "declaration already in set") ? static_cast<void> (0) : __assert_fail ("std::find(shadow_begin(), shadow_end(), S) == shadow_end() && \"declaration already in set\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2851, __PRETTY_FUNCTION__)); | |||
2852 | assert(S->getUsingDecl() == this)((S->getUsingDecl() == this) ? static_cast<void> (0) : __assert_fail ("S->getUsingDecl() == this", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2852, __PRETTY_FUNCTION__)); | |||
2853 | ||||
2854 | if (FirstUsingShadow.getPointer()) | |||
2855 | S->UsingOrNextShadow = FirstUsingShadow.getPointer(); | |||
2856 | FirstUsingShadow.setPointer(S); | |||
2857 | } | |||
2858 | ||||
2859 | void UsingDecl::removeShadowDecl(UsingShadowDecl *S) { | |||
2860 | assert(std::find(shadow_begin(), shadow_end(), S) != shadow_end() &&((std::find(shadow_begin(), shadow_end(), S) != shadow_end() && "declaration not in set") ? static_cast<void> (0) : __assert_fail ("std::find(shadow_begin(), shadow_end(), S) != shadow_end() && \"declaration not in set\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2861, __PRETTY_FUNCTION__)) | |||
2861 | "declaration not in set")((std::find(shadow_begin(), shadow_end(), S) != shadow_end() && "declaration not in set") ? static_cast<void> (0) : __assert_fail ("std::find(shadow_begin(), shadow_end(), S) != shadow_end() && \"declaration not in set\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2861, __PRETTY_FUNCTION__)); | |||
2862 | assert(S->getUsingDecl() == this)((S->getUsingDecl() == this) ? static_cast<void> (0) : __assert_fail ("S->getUsingDecl() == this", "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 2862, __PRETTY_FUNCTION__)); | |||
2863 | ||||
2864 | // Remove S from the shadow decl chain. This is O(n) but hopefully rare. | |||
2865 | ||||
2866 | if (FirstUsingShadow.getPointer() == S) { | |||
2867 | FirstUsingShadow.setPointer( | |||
2868 | dyn_cast<UsingShadowDecl>(S->UsingOrNextShadow)); | |||
2869 | S->UsingOrNextShadow = this; | |||
2870 | return; | |||
2871 | } | |||
2872 | ||||
2873 | UsingShadowDecl *Prev = FirstUsingShadow.getPointer(); | |||
2874 | while (Prev->UsingOrNextShadow != S) | |||
2875 | Prev = cast<UsingShadowDecl>(Prev->UsingOrNextShadow); | |||
2876 | Prev->UsingOrNextShadow = S->UsingOrNextShadow; | |||
2877 | S->UsingOrNextShadow = this; | |||
2878 | } | |||
2879 | ||||
2880 | UsingDecl *UsingDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation UL, | |||
2881 | NestedNameSpecifierLoc QualifierLoc, | |||
2882 | const DeclarationNameInfo &NameInfo, | |||
2883 | bool HasTypename) { | |||
2884 | return new (C, DC) UsingDecl(DC, UL, QualifierLoc, NameInfo, HasTypename); | |||
2885 | } | |||
2886 | ||||
2887 | UsingDecl *UsingDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2888 | return new (C, ID) UsingDecl(nullptr, SourceLocation(), | |||
2889 | NestedNameSpecifierLoc(), DeclarationNameInfo(), | |||
2890 | false); | |||
2891 | } | |||
2892 | ||||
2893 | SourceRange UsingDecl::getSourceRange() const { | |||
2894 | SourceLocation Begin = isAccessDeclaration() | |||
2895 | ? getQualifierLoc().getBeginLoc() : UsingLocation; | |||
2896 | return SourceRange(Begin, getNameInfo().getEndLoc()); | |||
2897 | } | |||
2898 | ||||
2899 | void UsingPackDecl::anchor() {} | |||
2900 | ||||
2901 | UsingPackDecl *UsingPackDecl::Create(ASTContext &C, DeclContext *DC, | |||
2902 | NamedDecl *InstantiatedFrom, | |||
2903 | ArrayRef<NamedDecl *> UsingDecls) { | |||
2904 | size_t Extra = additionalSizeToAlloc<NamedDecl *>(UsingDecls.size()); | |||
2905 | return new (C, DC, Extra) UsingPackDecl(DC, InstantiatedFrom, UsingDecls); | |||
2906 | } | |||
2907 | ||||
2908 | UsingPackDecl *UsingPackDecl::CreateDeserialized(ASTContext &C, unsigned ID, | |||
2909 | unsigned NumExpansions) { | |||
2910 | size_t Extra = additionalSizeToAlloc<NamedDecl *>(NumExpansions); | |||
2911 | auto *Result = new (C, ID, Extra) UsingPackDecl(nullptr, nullptr, None); | |||
2912 | Result->NumExpansions = NumExpansions; | |||
2913 | auto *Trail = Result->getTrailingObjects<NamedDecl *>(); | |||
2914 | for (unsigned I = 0; I != NumExpansions; ++I) | |||
2915 | new (Trail + I) NamedDecl*(nullptr); | |||
2916 | return Result; | |||
2917 | } | |||
2918 | ||||
2919 | void UnresolvedUsingValueDecl::anchor() {} | |||
2920 | ||||
2921 | UnresolvedUsingValueDecl * | |||
2922 | UnresolvedUsingValueDecl::Create(ASTContext &C, DeclContext *DC, | |||
2923 | SourceLocation UsingLoc, | |||
2924 | NestedNameSpecifierLoc QualifierLoc, | |||
2925 | const DeclarationNameInfo &NameInfo, | |||
2926 | SourceLocation EllipsisLoc) { | |||
2927 | return new (C, DC) UnresolvedUsingValueDecl(DC, C.DependentTy, UsingLoc, | |||
2928 | QualifierLoc, NameInfo, | |||
2929 | EllipsisLoc); | |||
2930 | } | |||
2931 | ||||
2932 | UnresolvedUsingValueDecl * | |||
2933 | UnresolvedUsingValueDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2934 | return new (C, ID) UnresolvedUsingValueDecl(nullptr, QualType(), | |||
2935 | SourceLocation(), | |||
2936 | NestedNameSpecifierLoc(), | |||
2937 | DeclarationNameInfo(), | |||
2938 | SourceLocation()); | |||
2939 | } | |||
2940 | ||||
2941 | SourceRange UnresolvedUsingValueDecl::getSourceRange() const { | |||
2942 | SourceLocation Begin = isAccessDeclaration() | |||
2943 | ? getQualifierLoc().getBeginLoc() : UsingLocation; | |||
2944 | return SourceRange(Begin, getNameInfo().getEndLoc()); | |||
2945 | } | |||
2946 | ||||
2947 | void UnresolvedUsingTypenameDecl::anchor() {} | |||
2948 | ||||
2949 | UnresolvedUsingTypenameDecl * | |||
2950 | UnresolvedUsingTypenameDecl::Create(ASTContext &C, DeclContext *DC, | |||
2951 | SourceLocation UsingLoc, | |||
2952 | SourceLocation TypenameLoc, | |||
2953 | NestedNameSpecifierLoc QualifierLoc, | |||
2954 | SourceLocation TargetNameLoc, | |||
2955 | DeclarationName TargetName, | |||
2956 | SourceLocation EllipsisLoc) { | |||
2957 | return new (C, DC) UnresolvedUsingTypenameDecl( | |||
2958 | DC, UsingLoc, TypenameLoc, QualifierLoc, TargetNameLoc, | |||
2959 | TargetName.getAsIdentifierInfo(), EllipsisLoc); | |||
2960 | } | |||
2961 | ||||
2962 | UnresolvedUsingTypenameDecl * | |||
2963 | UnresolvedUsingTypenameDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2964 | return new (C, ID) UnresolvedUsingTypenameDecl( | |||
2965 | nullptr, SourceLocation(), SourceLocation(), NestedNameSpecifierLoc(), | |||
2966 | SourceLocation(), nullptr, SourceLocation()); | |||
2967 | } | |||
2968 | ||||
2969 | void StaticAssertDecl::anchor() {} | |||
2970 | ||||
2971 | StaticAssertDecl *StaticAssertDecl::Create(ASTContext &C, DeclContext *DC, | |||
2972 | SourceLocation StaticAssertLoc, | |||
2973 | Expr *AssertExpr, | |||
2974 | StringLiteral *Message, | |||
2975 | SourceLocation RParenLoc, | |||
2976 | bool Failed) { | |||
2977 | return new (C, DC) StaticAssertDecl(DC, StaticAssertLoc, AssertExpr, Message, | |||
2978 | RParenLoc, Failed); | |||
2979 | } | |||
2980 | ||||
2981 | StaticAssertDecl *StaticAssertDecl::CreateDeserialized(ASTContext &C, | |||
2982 | unsigned ID) { | |||
2983 | return new (C, ID) StaticAssertDecl(nullptr, SourceLocation(), nullptr, | |||
2984 | nullptr, SourceLocation(), false); | |||
2985 | } | |||
2986 | ||||
2987 | void BindingDecl::anchor() {} | |||
2988 | ||||
2989 | BindingDecl *BindingDecl::Create(ASTContext &C, DeclContext *DC, | |||
2990 | SourceLocation IdLoc, IdentifierInfo *Id) { | |||
2991 | return new (C, DC) BindingDecl(DC, IdLoc, Id); | |||
2992 | } | |||
2993 | ||||
2994 | BindingDecl *BindingDecl::CreateDeserialized(ASTContext &C, unsigned ID) { | |||
2995 | return new (C, ID) BindingDecl(nullptr, SourceLocation(), nullptr); | |||
2996 | } | |||
2997 | ||||
2998 | ValueDecl *BindingDecl::getDecomposedDecl() const { | |||
2999 | ExternalASTSource *Source = | |||
3000 | Decomp.isOffset() ? getASTContext().getExternalSource() : nullptr; | |||
3001 | return cast_or_null<ValueDecl>(Decomp.get(Source)); | |||
3002 | } | |||
3003 | ||||
3004 | VarDecl *BindingDecl::getHoldingVar() const { | |||
3005 | Expr *B = getBinding(); | |||
3006 | if (!B) | |||
3007 | return nullptr; | |||
3008 | auto *DRE = dyn_cast<DeclRefExpr>(B->IgnoreImplicit()); | |||
3009 | if (!DRE) | |||
3010 | return nullptr; | |||
3011 | ||||
3012 | auto *VD = dyn_cast<VarDecl>(DRE->getDecl()); | |||
3013 | assert(VD->isImplicit() && "holding var for binding decl not implicit")((VD->isImplicit() && "holding var for binding decl not implicit" ) ? static_cast<void> (0) : __assert_fail ("VD->isImplicit() && \"holding var for binding decl not implicit\"" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 3013, __PRETTY_FUNCTION__)); | |||
3014 | return VD; | |||
3015 | } | |||
3016 | ||||
3017 | void DecompositionDecl::anchor() {} | |||
3018 | ||||
3019 | DecompositionDecl *DecompositionDecl::Create(ASTContext &C, DeclContext *DC, | |||
3020 | SourceLocation StartLoc, | |||
3021 | SourceLocation LSquareLoc, | |||
3022 | QualType T, TypeSourceInfo *TInfo, | |||
3023 | StorageClass SC, | |||
3024 | ArrayRef<BindingDecl *> Bindings) { | |||
3025 | size_t Extra = additionalSizeToAlloc<BindingDecl *>(Bindings.size()); | |||
3026 | return new (C, DC, Extra) | |||
3027 | DecompositionDecl(C, DC, StartLoc, LSquareLoc, T, TInfo, SC, Bindings); | |||
3028 | } | |||
3029 | ||||
3030 | DecompositionDecl *DecompositionDecl::CreateDeserialized(ASTContext &C, | |||
3031 | unsigned ID, | |||
3032 | unsigned NumBindings) { | |||
3033 | size_t Extra = additionalSizeToAlloc<BindingDecl *>(NumBindings); | |||
3034 | auto *Result = new (C, ID, Extra) | |||
3035 | DecompositionDecl(C, nullptr, SourceLocation(), SourceLocation(), | |||
3036 | QualType(), nullptr, StorageClass(), None); | |||
3037 | // Set up and clean out the bindings array. | |||
3038 | Result->NumBindings = NumBindings; | |||
3039 | auto *Trail = Result->getTrailingObjects<BindingDecl *>(); | |||
3040 | for (unsigned I = 0; I != NumBindings; ++I) | |||
3041 | new (Trail + I) BindingDecl*(nullptr); | |||
3042 | return Result; | |||
3043 | } | |||
3044 | ||||
3045 | void DecompositionDecl::printName(llvm::raw_ostream &os) const { | |||
3046 | os << '['; | |||
3047 | bool Comma = false; | |||
3048 | for (const auto *B : bindings()) { | |||
3049 | if (Comma) | |||
3050 | os << ", "; | |||
3051 | B->printName(os); | |||
3052 | Comma = true; | |||
3053 | } | |||
3054 | os << ']'; | |||
3055 | } | |||
3056 | ||||
3057 | void MSPropertyDecl::anchor() {} | |||
3058 | ||||
3059 | MSPropertyDecl *MSPropertyDecl::Create(ASTContext &C, DeclContext *DC, | |||
3060 | SourceLocation L, DeclarationName N, | |||
3061 | QualType T, TypeSourceInfo *TInfo, | |||
3062 | SourceLocation StartL, | |||
3063 | IdentifierInfo *Getter, | |||
3064 | IdentifierInfo *Setter) { | |||
3065 | return new (C, DC) MSPropertyDecl(DC, L, N, T, TInfo, StartL, Getter, Setter); | |||
3066 | } | |||
3067 | ||||
3068 | MSPropertyDecl *MSPropertyDecl::CreateDeserialized(ASTContext &C, | |||
3069 | unsigned ID) { | |||
3070 | return new (C, ID) MSPropertyDecl(nullptr, SourceLocation(), | |||
3071 | DeclarationName(), QualType(), nullptr, | |||
3072 | SourceLocation(), nullptr, nullptr); | |||
3073 | } | |||
3074 | ||||
3075 | static const char *getAccessName(AccessSpecifier AS) { | |||
3076 | switch (AS) { | |||
3077 | case AS_none: | |||
3078 | llvm_unreachable("Invalid access specifier!")::llvm::llvm_unreachable_internal("Invalid access specifier!" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 3078); | |||
3079 | case AS_public: | |||
3080 | return "public"; | |||
3081 | case AS_private: | |||
3082 | return "private"; | |||
3083 | case AS_protected: | |||
3084 | return "protected"; | |||
3085 | } | |||
3086 | llvm_unreachable("Invalid access specifier!")::llvm::llvm_unreachable_internal("Invalid access specifier!" , "/build/llvm-toolchain-snapshot-10~+201911111502510600c19528f1809/clang/lib/AST/DeclCXX.cpp" , 3086); | |||
3087 | } | |||
3088 | ||||
3089 | const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB, | |||
3090 | AccessSpecifier AS) { | |||
3091 | return DB << getAccessName(AS); | |||
3092 | } | |||
3093 | ||||
3094 | const PartialDiagnostic &clang::operator<<(const PartialDiagnostic &DB, | |||
3095 | AccessSpecifier AS) { | |||
3096 | return DB << getAccessName(AS); | |||
3097 | } |