1//===- ASTImporter.cpp - Importing ASTs from other Contexts ---------------===//
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 defines the ASTImporter class which imports AST nodes from one
10// context into another context.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/AST/ASTImporter.h"
15#include "clang/AST/ASTContext.h"
16#include "clang/AST/ASTDiagnostic.h"
17#include "clang/AST/ASTImporterSharedState.h"
18#include "clang/AST/ASTLambda.h"
19#include "clang/AST/ASTStructuralEquivalence.h"
20#include "clang/AST/Attr.h"
21#include "clang/AST/Decl.h"
22#include "clang/AST/DeclAccessPair.h"
23#include "clang/AST/DeclBase.h"
24#include "clang/AST/DeclCXX.h"
25#include "clang/AST/DeclFriend.h"
26#include "clang/AST/DeclGroup.h"
27#include "clang/AST/DeclObjC.h"
28#include "clang/AST/DeclTemplate.h"
29#include "clang/AST/DeclVisitor.h"
30#include "clang/AST/DeclarationName.h"
31#include "clang/AST/Expr.h"
32#include "clang/AST/ExprCXX.h"
33#include "clang/AST/ExprObjC.h"
34#include "clang/AST/ExternalASTSource.h"
35#include "clang/AST/LambdaCapture.h"
36#include "clang/AST/NestedNameSpecifier.h"
37#include "clang/AST/OperationKinds.h"
38#include "clang/AST/Stmt.h"
39#include "clang/AST/StmtCXX.h"
40#include "clang/AST/StmtObjC.h"
41#include "clang/AST/StmtVisitor.h"
42#include "clang/AST/TemplateBase.h"
43#include "clang/AST/TemplateName.h"
44#include "clang/AST/Type.h"
45#include "clang/AST/TypeLoc.h"
46#include "clang/AST/TypeVisitor.h"
47#include "clang/AST/UnresolvedSet.h"
48#include "clang/Basic/Builtins.h"
49#include "clang/Basic/ExceptionSpecificationType.h"
50#include "clang/Basic/FileManager.h"
51#include "clang/Basic/IdentifierTable.h"
52#include "clang/Basic/LLVM.h"
53#include "clang/Basic/LangOptions.h"
54#include "clang/Basic/SourceLocation.h"
55#include "clang/Basic/SourceManager.h"
56#include "clang/Basic/Specifiers.h"
57#include "llvm/ADT/ArrayRef.h"
58#include "llvm/ADT/DenseMap.h"
59#include "llvm/ADT/STLExtras.h"
60#include "llvm/ADT/ScopeExit.h"
61#include "llvm/ADT/SmallVector.h"
62#include "llvm/Support/ErrorHandling.h"
63#include "llvm/Support/MemoryBuffer.h"
64#include <algorithm>
65#include <cassert>
66#include <cstddef>
67#include <memory>
68#include <optional>
69#include <type_traits>
70#include <utility>
71
72namespace clang {
73
74 using llvm::make_error;
75 using llvm::Error;
76 using llvm::Expected;
77 using ExpectedTypePtr = llvm::Expected<const Type *>;
78 using ExpectedType = llvm::Expected<QualType>;
79 using ExpectedStmt = llvm::Expected<Stmt *>;
80 using ExpectedExpr = llvm::Expected<Expr *>;
81 using ExpectedDecl = llvm::Expected<Decl *>;
82 using ExpectedSLoc = llvm::Expected<SourceLocation>;
83 using ExpectedName = llvm::Expected<DeclarationName>;
84
85 std::string ASTImportError::toString() const {
86 // FIXME: Improve error texts.
87 switch (Error) {
88 case NameConflict:
89 return "NameConflict";
90 case UnsupportedConstruct:
91 return "UnsupportedConstruct";
92 case Unknown:
93 return "Unknown error";
94 }
95 llvm_unreachable("Invalid error code.");
96 return "Invalid error code.";
97 }
98
99 void ASTImportError::log(raw_ostream &OS) const { OS << toString(); }
100
101 std::error_code ASTImportError::convertToErrorCode() const {
102 llvm_unreachable("Function not implemented.");
103 }
104
105 char ASTImportError::ID;
106
107 template <class T>
108 static SmallVector<Decl *, 2>
109 getCanonicalForwardRedeclChain(Redeclarable<T> *D) {
110 SmallVector<Decl *, 2> Redecls;
111 for (auto *R : D->getFirstDecl()->redecls()) {
112 if (R != D->getFirstDecl())
113 Redecls.push_back(Elt: R);
114 }
115 Redecls.push_back(Elt: D->getFirstDecl());
116 std::reverse(first: Redecls.begin(), last: Redecls.end());
117 return Redecls;
118 }
119
120 SmallVector<Decl*, 2> getCanonicalForwardRedeclChain(Decl* D) {
121 if (auto *FD = dyn_cast<FunctionDecl>(Val: D))
122 return getCanonicalForwardRedeclChain<FunctionDecl>(D: FD);
123 if (auto *VD = dyn_cast<VarDecl>(Val: D))
124 return getCanonicalForwardRedeclChain<VarDecl>(D: VD);
125 if (auto *TD = dyn_cast<TagDecl>(Val: D))
126 return getCanonicalForwardRedeclChain<TagDecl>(D: TD);
127 llvm_unreachable("Bad declaration kind");
128 }
129
130 static void updateFlags(const Decl *From, Decl *To) {
131 // Check if some flags or attrs are new in 'From' and copy into 'To'.
132 // FIXME: Other flags or attrs?
133 if (From->isUsed(CheckUsedAttr: false) && !To->isUsed(CheckUsedAttr: false))
134 To->setIsUsed();
135 }
136
137 /// How to handle import errors that occur when import of a child declaration
138 /// of a DeclContext fails.
139 class ChildErrorHandlingStrategy {
140 /// This context is imported (in the 'from' domain).
141 /// It is nullptr if a non-DeclContext is imported.
142 const DeclContext *const FromDC;
143 /// Ignore import errors of the children.
144 /// If true, the context can be imported successfully if a child
145 /// of it failed to import. Otherwise the import errors of the child nodes
146 /// are accumulated (joined) into the import error object of the parent.
147 /// (Import of a parent can fail in other ways.)
148 bool const IgnoreChildErrors;
149
150 public:
151 ChildErrorHandlingStrategy(const DeclContext *FromDC)
152 : FromDC(FromDC), IgnoreChildErrors(!isa<TagDecl>(Val: FromDC)) {}
153 ChildErrorHandlingStrategy(const Decl *FromD)
154 : FromDC(dyn_cast<DeclContext>(Val: FromD)),
155 IgnoreChildErrors(!isa<TagDecl>(Val: FromD)) {}
156
157 /// Process the import result of a child (of the current declaration).
158 /// \param ResultErr The import error that can be used as result of
159 /// importing the parent. This may be changed by the function.
160 /// \param ChildErr Result of importing a child. Can be success or error.
161 void handleChildImportResult(Error &ResultErr, Error &&ChildErr) {
162 if (ChildErr && !IgnoreChildErrors)
163 ResultErr = joinErrors(E1: std::move(ResultErr), E2: std::move(ChildErr));
164 else
165 consumeError(Err: std::move(ChildErr));
166 }
167
168 /// Determine if import failure of a child does not cause import failure of
169 /// its parent.
170 bool ignoreChildErrorOnParent(Decl *FromChildD) const {
171 if (!IgnoreChildErrors || !FromDC)
172 return false;
173 return FromDC->containsDecl(D: FromChildD);
174 }
175 };
176
177 class ASTNodeImporter : public TypeVisitor<ASTNodeImporter, ExpectedType>,
178 public DeclVisitor<ASTNodeImporter, ExpectedDecl>,
179 public StmtVisitor<ASTNodeImporter, ExpectedStmt> {
180 ASTImporter &Importer;
181
182 // Use this instead of Importer.importInto .
183 template <typename ImportT>
184 [[nodiscard]] Error importInto(ImportT &To, const ImportT &From) {
185 return Importer.importInto(To, From);
186 }
187
188 // Use this to import pointers of specific type.
189 template <typename ImportT>
190 [[nodiscard]] Error importInto(ImportT *&To, ImportT *From) {
191 auto ToOrErr = Importer.Import(From);
192 if (ToOrErr)
193 To = cast_or_null<ImportT>(*ToOrErr);
194 return ToOrErr.takeError();
195 }
196
197 // Call the import function of ASTImporter for a baseclass of type `T` and
198 // cast the return value to `T`.
199 template <typename T>
200 auto import(T *From)
201 -> std::conditional_t<std::is_base_of_v<Type, T>, Expected<const T *>,
202 Expected<T *>> {
203 auto ToOrErr = Importer.Import(From);
204 if (!ToOrErr)
205 return ToOrErr.takeError();
206 return cast_or_null<T>(*ToOrErr);
207 }
208
209 template <typename T>
210 auto import(const T *From) {
211 return import(const_cast<T *>(From));
212 }
213
214 // Call the import function of ASTImporter for type `T`.
215 template <typename T>
216 Expected<T> import(const T &From) {
217 return Importer.Import(From);
218 }
219
220 // Import an std::optional<T> by importing the contained T, if any.
221 template <typename T>
222 Expected<std::optional<T>> import(std::optional<T> From) {
223 if (!From)
224 return std::nullopt;
225 return import(*From);
226 }
227
228 ExplicitSpecifier importExplicitSpecifier(Error &Err,
229 ExplicitSpecifier ESpec);
230
231 // Wrapper for an overload set.
232 template <typename ToDeclT> struct CallOverloadedCreateFun {
233 template <typename... Args> decltype(auto) operator()(Args &&... args) {
234 return ToDeclT::Create(std::forward<Args>(args)...);
235 }
236 };
237
238 // Always use these functions to create a Decl during import. There are
239 // certain tasks which must be done after the Decl was created, e.g. we
240 // must immediately register that as an imported Decl. The parameter `ToD`
241 // will be set to the newly created Decl or if had been imported before
242 // then to the already imported Decl. Returns a bool value set to true if
243 // the `FromD` had been imported before.
244 template <typename ToDeclT, typename FromDeclT, typename... Args>
245 [[nodiscard]] bool GetImportedOrCreateDecl(ToDeclT *&ToD, FromDeclT *FromD,
246 Args &&...args) {
247 // There may be several overloads of ToDeclT::Create. We must make sure
248 // to call the one which would be chosen by the arguments, thus we use a
249 // wrapper for the overload set.
250 CallOverloadedCreateFun<ToDeclT> OC;
251 return GetImportedOrCreateSpecialDecl(ToD, OC, FromD,
252 std::forward<Args>(args)...);
253 }
254 // Use this overload if a special Type is needed to be created. E.g if we
255 // want to create a `TypeAliasDecl` and assign that to a `TypedefNameDecl`
256 // then:
257 // TypedefNameDecl *ToTypedef;
258 // GetImportedOrCreateDecl<TypeAliasDecl>(ToTypedef, FromD, ...);
259 template <typename NewDeclT, typename ToDeclT, typename FromDeclT,
260 typename... Args>
261 [[nodiscard]] bool GetImportedOrCreateDecl(ToDeclT *&ToD, FromDeclT *FromD,
262 Args &&...args) {
263 CallOverloadedCreateFun<NewDeclT> OC;
264 return GetImportedOrCreateSpecialDecl(ToD, OC, FromD,
265 std::forward<Args>(args)...);
266 }
267 // Use this version if a special create function must be
268 // used, e.g. CXXRecordDecl::CreateLambda .
269 template <typename ToDeclT, typename CreateFunT, typename FromDeclT,
270 typename... Args>
271 [[nodiscard]] bool
272 GetImportedOrCreateSpecialDecl(ToDeclT *&ToD, CreateFunT CreateFun,
273 FromDeclT *FromD, Args &&...args) {
274 if (Importer.getImportDeclErrorIfAny(FromD)) {
275 ToD = nullptr;
276 return true; // Already imported but with error.
277 }
278 ToD = cast_or_null<ToDeclT>(Importer.GetAlreadyImportedOrNull(FromD));
279 if (ToD)
280 return true; // Already imported.
281 ToD = CreateFun(std::forward<Args>(args)...);
282 // Keep track of imported Decls.
283 Importer.RegisterImportedDecl(FromD, ToD);
284 Importer.SharedState->markAsNewDecl(ToD);
285 InitializeImportedDecl(FromD, ToD);
286 return false; // A new Decl is created.
287 }
288
289 void InitializeImportedDecl(Decl *FromD, Decl *ToD) {
290 ToD->IdentifierNamespace = FromD->IdentifierNamespace;
291 if (FromD->isUsed())
292 ToD->setIsUsed();
293 if (FromD->isImplicit())
294 ToD->setImplicit();
295 }
296
297 // Check if we have found an existing definition. Returns with that
298 // definition if yes, otherwise returns null.
299 Decl *FindAndMapDefinition(FunctionDecl *D, FunctionDecl *FoundFunction) {
300 const FunctionDecl *Definition = nullptr;
301 if (D->doesThisDeclarationHaveABody() &&
302 FoundFunction->hasBody(Definition))
303 return Importer.MapImported(From: D, To: const_cast<FunctionDecl *>(Definition));
304 return nullptr;
305 }
306
307 void addDeclToContexts(Decl *FromD, Decl *ToD) {
308 if (Importer.isMinimalImport()) {
309 // In minimal import case the decl must be added even if it is not
310 // contained in original context, for LLDB compatibility.
311 // FIXME: Check if a better solution is possible.
312 if (!FromD->getDescribedTemplate() &&
313 FromD->getFriendObjectKind() == Decl::FOK_None)
314 ToD->getLexicalDeclContext()->addDeclInternal(D: ToD);
315 return;
316 }
317
318 DeclContext *FromDC = FromD->getDeclContext();
319 DeclContext *FromLexicalDC = FromD->getLexicalDeclContext();
320 DeclContext *ToDC = ToD->getDeclContext();
321 DeclContext *ToLexicalDC = ToD->getLexicalDeclContext();
322
323 bool Visible = false;
324 if (FromDC->containsDeclAndLoad(D: FromD)) {
325 ToDC->addDeclInternal(D: ToD);
326 Visible = true;
327 }
328 if (ToDC != ToLexicalDC && FromLexicalDC->containsDeclAndLoad(D: FromD)) {
329 ToLexicalDC->addDeclInternal(D: ToD);
330 Visible = true;
331 }
332
333 // If the Decl was added to any context, it was made already visible.
334 // Otherwise it is still possible that it should be visible.
335 if (!Visible) {
336 if (auto *FromNamed = dyn_cast<NamedDecl>(Val: FromD)) {
337 auto *ToNamed = cast<NamedDecl>(Val: ToD);
338 DeclContextLookupResult FromLookup =
339 FromDC->lookup(Name: FromNamed->getDeclName());
340 if (llvm::is_contained(Range&: FromLookup, Element: FromNamed))
341 ToDC->makeDeclVisibleInContext(D: ToNamed);
342 }
343 }
344 }
345
346 void updateLookupTableForTemplateParameters(TemplateParameterList &Params,
347 DeclContext *OldDC) {
348 ASTImporterLookupTable *LT = Importer.SharedState->getLookupTable();
349 if (!LT)
350 return;
351
352 for (NamedDecl *TP : Params)
353 LT->update(ND: TP, OldDC);
354 }
355
356 void updateLookupTableForTemplateParameters(TemplateParameterList &Params) {
357 updateLookupTableForTemplateParameters(
358 Params, OldDC: Importer.getToContext().getTranslationUnitDecl());
359 }
360
361 template <typename TemplateParmDeclT>
362 Error importTemplateParameterDefaultArgument(const TemplateParmDeclT *D,
363 TemplateParmDeclT *ToD) {
364 if (D->hasDefaultArgument()) {
365 if (D->defaultArgumentWasInherited()) {
366 Expected<TemplateParmDeclT *> ToInheritedFromOrErr =
367 import(D->getDefaultArgStorage().getInheritedFrom());
368 if (!ToInheritedFromOrErr)
369 return ToInheritedFromOrErr.takeError();
370 TemplateParmDeclT *ToInheritedFrom = *ToInheritedFromOrErr;
371 if (!ToInheritedFrom->hasDefaultArgument()) {
372 // Resolve possible circular dependency between default value of the
373 // template argument and the template declaration.
374 Expected<TemplateArgumentLoc> ToInheritedDefaultArgOrErr =
375 import(D->getDefaultArgStorage()
376 .getInheritedFrom()
377 ->getDefaultArgument());
378 if (!ToInheritedDefaultArgOrErr)
379 return ToInheritedDefaultArgOrErr.takeError();
380 ToInheritedFrom->setDefaultArgument(Importer.getToContext(),
381 *ToInheritedDefaultArgOrErr);
382 }
383 ToD->setInheritedDefaultArgument(ToD->getASTContext(),
384 ToInheritedFrom);
385 } else {
386 Expected<TemplateArgumentLoc> ToDefaultArgOrErr =
387 import(D->getDefaultArgument());
388 if (!ToDefaultArgOrErr)
389 return ToDefaultArgOrErr.takeError();
390 // Default argument could have been set in the
391 // '!ToInheritedFrom->hasDefaultArgument()' branch above.
392 if (!ToD->hasDefaultArgument())
393 ToD->setDefaultArgument(Importer.getToContext(),
394 *ToDefaultArgOrErr);
395 }
396 }
397 return Error::success();
398 }
399
400 public:
401 explicit ASTNodeImporter(ASTImporter &Importer) : Importer(Importer) {}
402
403 using TypeVisitor<ASTNodeImporter, ExpectedType>::Visit;
404 using DeclVisitor<ASTNodeImporter, ExpectedDecl>::Visit;
405 using StmtVisitor<ASTNodeImporter, ExpectedStmt>::Visit;
406
407 // Importing types
408 ExpectedType VisitType(const Type *T);
409#define TYPE(Class, Base) \
410 ExpectedType Visit##Class##Type(const Class##Type *T);
411#include "clang/AST/TypeNodes.inc"
412
413 // Importing declarations
414 Error ImportDeclParts(NamedDecl *D, DeclarationName &Name, NamedDecl *&ToD,
415 SourceLocation &Loc);
416 Error ImportDeclParts(
417 NamedDecl *D, DeclContext *&DC, DeclContext *&LexicalDC,
418 DeclarationName &Name, NamedDecl *&ToD, SourceLocation &Loc);
419 Error ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD = nullptr);
420 Error ImportDeclarationNameLoc(
421 const DeclarationNameInfo &From, DeclarationNameInfo &To);
422 Error ImportDeclContext(DeclContext *FromDC, bool ForceImport = false);
423 Error ImportDeclContext(
424 Decl *From, DeclContext *&ToDC, DeclContext *&ToLexicalDC);
425 Error ImportImplicitMethods(const CXXRecordDecl *From, CXXRecordDecl *To);
426
427 Error ImportFieldDeclDefinition(const FieldDecl *From, const FieldDecl *To);
428 Expected<CXXCastPath> ImportCastPath(CastExpr *E);
429 Expected<APValue> ImportAPValue(const APValue &FromValue);
430
431 using Designator = DesignatedInitExpr::Designator;
432
433 /// What we should import from the definition.
434 enum ImportDefinitionKind {
435 /// Import the default subset of the definition, which might be
436 /// nothing (if minimal import is set) or might be everything (if minimal
437 /// import is not set).
438 IDK_Default,
439 /// Import everything.
440 IDK_Everything,
441 /// Import only the bare bones needed to establish a valid
442 /// DeclContext.
443 IDK_Basic
444 };
445
446 bool shouldForceImportDeclContext(ImportDefinitionKind IDK) {
447 return IDK == IDK_Everything ||
448 (IDK == IDK_Default && !Importer.isMinimalImport());
449 }
450
451 Error ImportInitializer(VarDecl *From, VarDecl *To);
452 Error ImportDefinition(
453 RecordDecl *From, RecordDecl *To,
454 ImportDefinitionKind Kind = IDK_Default);
455 Error ImportDefinition(
456 EnumDecl *From, EnumDecl *To,
457 ImportDefinitionKind Kind = IDK_Default);
458 Error ImportDefinition(
459 ObjCInterfaceDecl *From, ObjCInterfaceDecl *To,
460 ImportDefinitionKind Kind = IDK_Default);
461 Error ImportDefinition(
462 ObjCProtocolDecl *From, ObjCProtocolDecl *To,
463 ImportDefinitionKind Kind = IDK_Default);
464 Error ImportTemplateArguments(ArrayRef<TemplateArgument> FromArgs,
465 SmallVectorImpl<TemplateArgument> &ToArgs);
466 Expected<TemplateArgument>
467 ImportTemplateArgument(const TemplateArgument &From);
468
469 template <typename InContainerTy>
470 Error ImportTemplateArgumentListInfo(
471 const InContainerTy &Container, TemplateArgumentListInfo &ToTAInfo);
472
473 template<typename InContainerTy>
474 Error ImportTemplateArgumentListInfo(
475 SourceLocation FromLAngleLoc, SourceLocation FromRAngleLoc,
476 const InContainerTy &Container, TemplateArgumentListInfo &Result);
477
478 using TemplateArgsTy = SmallVector<TemplateArgument, 8>;
479 using FunctionTemplateAndArgsTy =
480 std::tuple<FunctionTemplateDecl *, TemplateArgsTy>;
481 Expected<FunctionTemplateAndArgsTy>
482 ImportFunctionTemplateWithTemplateArgsFromSpecialization(
483 FunctionDecl *FromFD);
484
485 template <typename DeclTy>
486 Error ImportTemplateParameterLists(const DeclTy *FromD, DeclTy *ToD);
487
488 Error ImportTemplateInformation(FunctionDecl *FromFD, FunctionDecl *ToFD);
489
490 Error ImportFunctionDeclBody(FunctionDecl *FromFD, FunctionDecl *ToFD);
491
492 Error ImportDefaultArgOfParmVarDecl(const ParmVarDecl *FromParam,
493 ParmVarDecl *ToParam);
494
495 Expected<InheritedConstructor>
496 ImportInheritedConstructor(const InheritedConstructor &From);
497
498 // Use for allocating string for newly imported object.
499 StringRef ImportASTStringRef(StringRef FromStr);
500 Error ImportConstraintSatisfaction(const ASTConstraintSatisfaction &FromSat,
501 ConstraintSatisfaction &ToSat);
502 Expected<concepts::Requirement *>
503 ImportTypeRequirement(concepts::TypeRequirement *From);
504 Expected<concepts::Requirement *>
505 ImportExprRequirement(concepts::ExprRequirement *From);
506 Expected<concepts::Requirement *>
507 ImportNestedRequirement(concepts::NestedRequirement *From);
508
509 template <typename T>
510 bool hasSameVisibilityContextAndLinkage(T *Found, T *From);
511
512 bool IsStructuralMatch(Decl *From, Decl *To, bool Complain = true,
513 bool IgnoreTemplateParmDepth = false);
514 ExpectedDecl VisitDecl(Decl *D);
515 ExpectedDecl VisitImportDecl(ImportDecl *D);
516 ExpectedDecl VisitEmptyDecl(EmptyDecl *D);
517 ExpectedDecl VisitAccessSpecDecl(AccessSpecDecl *D);
518 ExpectedDecl VisitStaticAssertDecl(StaticAssertDecl *D);
519 ExpectedDecl VisitTranslationUnitDecl(TranslationUnitDecl *D);
520 ExpectedDecl VisitBindingDecl(BindingDecl *D);
521 ExpectedDecl VisitNamespaceDecl(NamespaceDecl *D);
522 ExpectedDecl VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
523 ExpectedDecl VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias);
524 ExpectedDecl VisitTypedefDecl(TypedefDecl *D);
525 ExpectedDecl VisitTypeAliasDecl(TypeAliasDecl *D);
526 ExpectedDecl VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
527 ExpectedDecl VisitLabelDecl(LabelDecl *D);
528 ExpectedDecl VisitEnumDecl(EnumDecl *D);
529 ExpectedDecl VisitRecordDecl(RecordDecl *D);
530 ExpectedDecl VisitEnumConstantDecl(EnumConstantDecl *D);
531 ExpectedDecl VisitFunctionDecl(FunctionDecl *D);
532 ExpectedDecl VisitCXXMethodDecl(CXXMethodDecl *D);
533 ExpectedDecl VisitCXXConstructorDecl(CXXConstructorDecl *D);
534 ExpectedDecl VisitCXXDestructorDecl(CXXDestructorDecl *D);
535 ExpectedDecl VisitCXXConversionDecl(CXXConversionDecl *D);
536 ExpectedDecl VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D);
537 ExpectedDecl VisitFieldDecl(FieldDecl *D);
538 ExpectedDecl VisitIndirectFieldDecl(IndirectFieldDecl *D);
539 ExpectedDecl VisitFriendDecl(FriendDecl *D);
540 ExpectedDecl VisitObjCIvarDecl(ObjCIvarDecl *D);
541 ExpectedDecl VisitVarDecl(VarDecl *D);
542 ExpectedDecl VisitImplicitParamDecl(ImplicitParamDecl *D);
543 ExpectedDecl VisitParmVarDecl(ParmVarDecl *D);
544 ExpectedDecl VisitObjCMethodDecl(ObjCMethodDecl *D);
545 ExpectedDecl VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
546 ExpectedDecl VisitObjCCategoryDecl(ObjCCategoryDecl *D);
547 ExpectedDecl VisitObjCProtocolDecl(ObjCProtocolDecl *D);
548 ExpectedDecl VisitLinkageSpecDecl(LinkageSpecDecl *D);
549 ExpectedDecl VisitUsingDecl(UsingDecl *D);
550 ExpectedDecl VisitUsingShadowDecl(UsingShadowDecl *D);
551 ExpectedDecl VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
552 ExpectedDecl VisitUsingPackDecl(UsingPackDecl *D);
553 ExpectedDecl ImportUsingShadowDecls(BaseUsingDecl *D, BaseUsingDecl *ToSI);
554 ExpectedDecl VisitUsingEnumDecl(UsingEnumDecl *D);
555 ExpectedDecl VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
556 ExpectedDecl VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
557 ExpectedDecl VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D);
558 ExpectedDecl
559 VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
560
561 Expected<ObjCTypeParamList *>
562 ImportObjCTypeParamList(ObjCTypeParamList *list);
563
564 ExpectedDecl VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
565 ExpectedDecl VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
566 ExpectedDecl VisitObjCImplementationDecl(ObjCImplementationDecl *D);
567 ExpectedDecl VisitObjCPropertyDecl(ObjCPropertyDecl *D);
568 ExpectedDecl VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
569 ExpectedDecl VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
570 ExpectedDecl VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
571 ExpectedDecl VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
572 ExpectedDecl VisitClassTemplateDecl(ClassTemplateDecl *D);
573 ExpectedDecl VisitClassTemplateSpecializationDecl(
574 ClassTemplateSpecializationDecl *D);
575 ExpectedDecl VisitVarTemplateDecl(VarTemplateDecl *D);
576 ExpectedDecl VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
577 ExpectedDecl VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
578 ExpectedDecl VisitConceptDecl(ConceptDecl* D);
579 ExpectedDecl VisitRequiresExprBodyDecl(RequiresExprBodyDecl* E);
580 ExpectedDecl VisitImplicitConceptSpecializationDecl(ImplicitConceptSpecializationDecl* D);
581
582 // Importing statements
583 ExpectedStmt VisitStmt(Stmt *S);
584 ExpectedStmt VisitGCCAsmStmt(GCCAsmStmt *S);
585 ExpectedStmt VisitDeclStmt(DeclStmt *S);
586 ExpectedStmt VisitNullStmt(NullStmt *S);
587 ExpectedStmt VisitCompoundStmt(CompoundStmt *S);
588 ExpectedStmt VisitCaseStmt(CaseStmt *S);
589 ExpectedStmt VisitDefaultStmt(DefaultStmt *S);
590 ExpectedStmt VisitLabelStmt(LabelStmt *S);
591 ExpectedStmt VisitAttributedStmt(AttributedStmt *S);
592 ExpectedStmt VisitIfStmt(IfStmt *S);
593 ExpectedStmt VisitSwitchStmt(SwitchStmt *S);
594 ExpectedStmt VisitWhileStmt(WhileStmt *S);
595 ExpectedStmt VisitDoStmt(DoStmt *S);
596 ExpectedStmt VisitForStmt(ForStmt *S);
597 ExpectedStmt VisitGotoStmt(GotoStmt *S);
598 ExpectedStmt VisitIndirectGotoStmt(IndirectGotoStmt *S);
599 ExpectedStmt VisitContinueStmt(ContinueStmt *S);
600 ExpectedStmt VisitBreakStmt(BreakStmt *S);
601 ExpectedStmt VisitReturnStmt(ReturnStmt *S);
602 // FIXME: MSAsmStmt
603 // FIXME: SEHExceptStmt
604 // FIXME: SEHFinallyStmt
605 // FIXME: SEHTryStmt
606 // FIXME: SEHLeaveStmt
607 // FIXME: CapturedStmt
608 ExpectedStmt VisitCXXCatchStmt(CXXCatchStmt *S);
609 ExpectedStmt VisitCXXTryStmt(CXXTryStmt *S);
610 ExpectedStmt VisitCXXForRangeStmt(CXXForRangeStmt *S);
611 // FIXME: MSDependentExistsStmt
612 ExpectedStmt VisitObjCForCollectionStmt(ObjCForCollectionStmt *S);
613 ExpectedStmt VisitObjCAtCatchStmt(ObjCAtCatchStmt *S);
614 ExpectedStmt VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S);
615 ExpectedStmt VisitObjCAtTryStmt(ObjCAtTryStmt *S);
616 ExpectedStmt VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S);
617 ExpectedStmt VisitObjCAtThrowStmt(ObjCAtThrowStmt *S);
618 ExpectedStmt VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S);
619
620 // Importing expressions
621 ExpectedStmt VisitExpr(Expr *E);
622 ExpectedStmt VisitSourceLocExpr(SourceLocExpr *E);
623 ExpectedStmt VisitVAArgExpr(VAArgExpr *E);
624 ExpectedStmt VisitChooseExpr(ChooseExpr *E);
625 ExpectedStmt VisitConvertVectorExpr(ConvertVectorExpr *E);
626 ExpectedStmt VisitShuffleVectorExpr(ShuffleVectorExpr *E);
627 ExpectedStmt VisitGNUNullExpr(GNUNullExpr *E);
628 ExpectedStmt VisitGenericSelectionExpr(GenericSelectionExpr *E);
629 ExpectedStmt VisitPredefinedExpr(PredefinedExpr *E);
630 ExpectedStmt VisitDeclRefExpr(DeclRefExpr *E);
631 ExpectedStmt VisitImplicitValueInitExpr(ImplicitValueInitExpr *E);
632 ExpectedStmt VisitDesignatedInitExpr(DesignatedInitExpr *E);
633 ExpectedStmt VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E);
634 ExpectedStmt VisitIntegerLiteral(IntegerLiteral *E);
635 ExpectedStmt VisitFloatingLiteral(FloatingLiteral *E);
636 ExpectedStmt VisitImaginaryLiteral(ImaginaryLiteral *E);
637 ExpectedStmt VisitFixedPointLiteral(FixedPointLiteral *E);
638 ExpectedStmt VisitCharacterLiteral(CharacterLiteral *E);
639 ExpectedStmt VisitStringLiteral(StringLiteral *E);
640 ExpectedStmt VisitCompoundLiteralExpr(CompoundLiteralExpr *E);
641 ExpectedStmt VisitAtomicExpr(AtomicExpr *E);
642 ExpectedStmt VisitAddrLabelExpr(AddrLabelExpr *E);
643 ExpectedStmt VisitConstantExpr(ConstantExpr *E);
644 ExpectedStmt VisitParenExpr(ParenExpr *E);
645 ExpectedStmt VisitParenListExpr(ParenListExpr *E);
646 ExpectedStmt VisitStmtExpr(StmtExpr *E);
647 ExpectedStmt VisitUnaryOperator(UnaryOperator *E);
648 ExpectedStmt VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E);
649 ExpectedStmt VisitBinaryOperator(BinaryOperator *E);
650 ExpectedStmt VisitConditionalOperator(ConditionalOperator *E);
651 ExpectedStmt VisitBinaryConditionalOperator(BinaryConditionalOperator *E);
652 ExpectedStmt VisitCXXRewrittenBinaryOperator(CXXRewrittenBinaryOperator *E);
653 ExpectedStmt VisitOpaqueValueExpr(OpaqueValueExpr *E);
654 ExpectedStmt VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E);
655 ExpectedStmt VisitExpressionTraitExpr(ExpressionTraitExpr *E);
656 ExpectedStmt VisitArraySubscriptExpr(ArraySubscriptExpr *E);
657 ExpectedStmt VisitCompoundAssignOperator(CompoundAssignOperator *E);
658 ExpectedStmt VisitImplicitCastExpr(ImplicitCastExpr *E);
659 ExpectedStmt VisitExplicitCastExpr(ExplicitCastExpr *E);
660 ExpectedStmt VisitOffsetOfExpr(OffsetOfExpr *OE);
661 ExpectedStmt VisitCXXThrowExpr(CXXThrowExpr *E);
662 ExpectedStmt VisitCXXNoexceptExpr(CXXNoexceptExpr *E);
663 ExpectedStmt VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E);
664 ExpectedStmt VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E);
665 ExpectedStmt VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E);
666 ExpectedStmt VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E);
667 ExpectedStmt VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E);
668 ExpectedStmt VisitPackExpansionExpr(PackExpansionExpr *E);
669 ExpectedStmt VisitSizeOfPackExpr(SizeOfPackExpr *E);
670 ExpectedStmt VisitCXXNewExpr(CXXNewExpr *E);
671 ExpectedStmt VisitCXXDeleteExpr(CXXDeleteExpr *E);
672 ExpectedStmt VisitCXXConstructExpr(CXXConstructExpr *E);
673 ExpectedStmt VisitCXXMemberCallExpr(CXXMemberCallExpr *E);
674 ExpectedStmt VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E);
675 ExpectedStmt VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E);
676 ExpectedStmt VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E);
677 ExpectedStmt VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E);
678 ExpectedStmt VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E);
679 ExpectedStmt VisitExprWithCleanups(ExprWithCleanups *E);
680 ExpectedStmt VisitCXXThisExpr(CXXThisExpr *E);
681 ExpectedStmt VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E);
682 ExpectedStmt VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E);
683 ExpectedStmt VisitMemberExpr(MemberExpr *E);
684 ExpectedStmt VisitCallExpr(CallExpr *E);
685 ExpectedStmt VisitLambdaExpr(LambdaExpr *LE);
686 ExpectedStmt VisitInitListExpr(InitListExpr *E);
687 ExpectedStmt VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E);
688 ExpectedStmt VisitCXXInheritedCtorInitExpr(CXXInheritedCtorInitExpr *E);
689 ExpectedStmt VisitArrayInitLoopExpr(ArrayInitLoopExpr *E);
690 ExpectedStmt VisitArrayInitIndexExpr(ArrayInitIndexExpr *E);
691 ExpectedStmt VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E);
692 ExpectedStmt VisitCXXNamedCastExpr(CXXNamedCastExpr *E);
693 ExpectedStmt VisitSubstNonTypeTemplateParmExpr(SubstNonTypeTemplateParmExpr *E);
694 ExpectedStmt VisitTypeTraitExpr(TypeTraitExpr *E);
695 ExpectedStmt VisitCXXTypeidExpr(CXXTypeidExpr *E);
696 ExpectedStmt VisitCXXFoldExpr(CXXFoldExpr *E);
697 ExpectedStmt VisitRequiresExpr(RequiresExpr* E);
698 ExpectedStmt VisitConceptSpecializationExpr(ConceptSpecializationExpr* E);
699 ExpectedStmt
700 VisitSubstNonTypeTemplateParmPackExpr(SubstNonTypeTemplateParmPackExpr *E);
701 ExpectedStmt VisitPseudoObjectExpr(PseudoObjectExpr *E);
702 ExpectedStmt VisitCXXParenListInitExpr(CXXParenListInitExpr *E);
703
704 // Helper for chaining together multiple imports. If an error is detected,
705 // subsequent imports will return default constructed nodes, so that failure
706 // can be detected with a single conditional branch after a sequence of
707 // imports.
708 template <typename T> T importChecked(Error &Err, const T &From) {
709 // Don't attempt to import nodes if we hit an error earlier.
710 if (Err)
711 return T{};
712 Expected<T> MaybeVal = import(From);
713 if (!MaybeVal) {
714 Err = MaybeVal.takeError();
715 return T{};
716 }
717 return *MaybeVal;
718 }
719
720 template<typename IIter, typename OIter>
721 Error ImportArrayChecked(IIter Ibegin, IIter Iend, OIter Obegin) {
722 using ItemT = std::remove_reference_t<decltype(*Obegin)>;
723 for (; Ibegin != Iend; ++Ibegin, ++Obegin) {
724 Expected<ItemT> ToOrErr = import(*Ibegin);
725 if (!ToOrErr)
726 return ToOrErr.takeError();
727 *Obegin = *ToOrErr;
728 }
729 return Error::success();
730 }
731
732 // Import every item from a container structure into an output container.
733 // If error occurs, stops at first error and returns the error.
734 // The output container should have space for all needed elements (it is not
735 // expanded, new items are put into from the beginning).
736 template<typename InContainerTy, typename OutContainerTy>
737 Error ImportContainerChecked(
738 const InContainerTy &InContainer, OutContainerTy &OutContainer) {
739 return ImportArrayChecked(
740 InContainer.begin(), InContainer.end(), OutContainer.begin());
741 }
742
743 template<typename InContainerTy, typename OIter>
744 Error ImportArrayChecked(const InContainerTy &InContainer, OIter Obegin) {
745 return ImportArrayChecked(InContainer.begin(), InContainer.end(), Obegin);
746 }
747
748 Error ImportOverriddenMethods(CXXMethodDecl *ToMethod,
749 CXXMethodDecl *FromMethod);
750
751 Expected<FunctionDecl *> FindFunctionTemplateSpecialization(
752 FunctionDecl *FromFD);
753
754 // Returns true if the given function has a placeholder return type and
755 // that type is declared inside the body of the function.
756 // E.g. auto f() { struct X{}; return X(); }
757 bool hasReturnTypeDeclaredInside(FunctionDecl *D);
758 };
759
760template <typename InContainerTy>
761Error ASTNodeImporter::ImportTemplateArgumentListInfo(
762 SourceLocation FromLAngleLoc, SourceLocation FromRAngleLoc,
763 const InContainerTy &Container, TemplateArgumentListInfo &Result) {
764 auto ToLAngleLocOrErr = import(From: FromLAngleLoc);
765 if (!ToLAngleLocOrErr)
766 return ToLAngleLocOrErr.takeError();
767 auto ToRAngleLocOrErr = import(From: FromRAngleLoc);
768 if (!ToRAngleLocOrErr)
769 return ToRAngleLocOrErr.takeError();
770
771 TemplateArgumentListInfo ToTAInfo(*ToLAngleLocOrErr, *ToRAngleLocOrErr);
772 if (auto Err = ImportTemplateArgumentListInfo(Container, ToTAInfo))
773 return Err;
774 Result = ToTAInfo;
775 return Error::success();
776}
777
778template <>
779Error ASTNodeImporter::ImportTemplateArgumentListInfo<TemplateArgumentListInfo>(
780 const TemplateArgumentListInfo &From, TemplateArgumentListInfo &Result) {
781 return ImportTemplateArgumentListInfo(
782 FromLAngleLoc: From.getLAngleLoc(), FromRAngleLoc: From.getRAngleLoc(), Container: From.arguments(), Result);
783}
784
785template <>
786Error ASTNodeImporter::ImportTemplateArgumentListInfo<
787 ASTTemplateArgumentListInfo>(
788 const ASTTemplateArgumentListInfo &From,
789 TemplateArgumentListInfo &Result) {
790 return ImportTemplateArgumentListInfo(
791 FromLAngleLoc: From.LAngleLoc, FromRAngleLoc: From.RAngleLoc, Container: From.arguments(), Result);
792}
793
794Expected<ASTNodeImporter::FunctionTemplateAndArgsTy>
795ASTNodeImporter::ImportFunctionTemplateWithTemplateArgsFromSpecialization(
796 FunctionDecl *FromFD) {
797 assert(FromFD->getTemplatedKind() ==
798 FunctionDecl::TK_FunctionTemplateSpecialization);
799
800 FunctionTemplateAndArgsTy Result;
801
802 auto *FTSInfo = FromFD->getTemplateSpecializationInfo();
803 if (Error Err = importInto(To&: std::get<0>(t&: Result), From: FTSInfo->getTemplate()))
804 return std::move(Err);
805
806 // Import template arguments.
807 if (Error Err = ImportTemplateArguments(FromArgs: FTSInfo->TemplateArguments->asArray(),
808 ToArgs&: std::get<1>(t&: Result)))
809 return std::move(Err);
810
811 return Result;
812}
813
814template <>
815Expected<TemplateParameterList *>
816ASTNodeImporter::import(TemplateParameterList *From) {
817 SmallVector<NamedDecl *, 4> To(From->size());
818 if (Error Err = ImportContainerChecked(InContainer: *From, OutContainer&: To))
819 return std::move(Err);
820
821 ExpectedExpr ToRequiresClause = import(From: From->getRequiresClause());
822 if (!ToRequiresClause)
823 return ToRequiresClause.takeError();
824
825 auto ToTemplateLocOrErr = import(From: From->getTemplateLoc());
826 if (!ToTemplateLocOrErr)
827 return ToTemplateLocOrErr.takeError();
828 auto ToLAngleLocOrErr = import(From: From->getLAngleLoc());
829 if (!ToLAngleLocOrErr)
830 return ToLAngleLocOrErr.takeError();
831 auto ToRAngleLocOrErr = import(From: From->getRAngleLoc());
832 if (!ToRAngleLocOrErr)
833 return ToRAngleLocOrErr.takeError();
834
835 return TemplateParameterList::Create(
836 C: Importer.getToContext(),
837 TemplateLoc: *ToTemplateLocOrErr,
838 LAngleLoc: *ToLAngleLocOrErr,
839 Params: To,
840 RAngleLoc: *ToRAngleLocOrErr,
841 RequiresClause: *ToRequiresClause);
842}
843
844template <>
845Expected<TemplateArgument>
846ASTNodeImporter::import(const TemplateArgument &From) {
847 switch (From.getKind()) {
848 case TemplateArgument::Null:
849 return TemplateArgument();
850
851 case TemplateArgument::Type: {
852 ExpectedType ToTypeOrErr = import(From: From.getAsType());
853 if (!ToTypeOrErr)
854 return ToTypeOrErr.takeError();
855 return TemplateArgument(*ToTypeOrErr, /*isNullPtr*/ false,
856 From.getIsDefaulted());
857 }
858
859 case TemplateArgument::Integral: {
860 ExpectedType ToTypeOrErr = import(From: From.getIntegralType());
861 if (!ToTypeOrErr)
862 return ToTypeOrErr.takeError();
863 return TemplateArgument(From, *ToTypeOrErr);
864 }
865
866 case TemplateArgument::Declaration: {
867 Expected<ValueDecl *> ToOrErr = import(From: From.getAsDecl());
868 if (!ToOrErr)
869 return ToOrErr.takeError();
870 ExpectedType ToTypeOrErr = import(From: From.getParamTypeForDecl());
871 if (!ToTypeOrErr)
872 return ToTypeOrErr.takeError();
873 return TemplateArgument(dyn_cast<ValueDecl>(Val: (*ToOrErr)->getCanonicalDecl()),
874 *ToTypeOrErr, From.getIsDefaulted());
875 }
876
877 case TemplateArgument::NullPtr: {
878 ExpectedType ToTypeOrErr = import(From: From.getNullPtrType());
879 if (!ToTypeOrErr)
880 return ToTypeOrErr.takeError();
881 return TemplateArgument(*ToTypeOrErr, /*isNullPtr*/ true,
882 From.getIsDefaulted());
883 }
884
885 case TemplateArgument::StructuralValue: {
886 ExpectedType ToTypeOrErr = import(From: From.getStructuralValueType());
887 if (!ToTypeOrErr)
888 return ToTypeOrErr.takeError();
889 Expected<APValue> ToValueOrErr = import(From: From.getAsStructuralValue());
890 if (!ToValueOrErr)
891 return ToValueOrErr.takeError();
892 return TemplateArgument(Importer.getToContext(), *ToTypeOrErr,
893 *ToValueOrErr);
894 }
895
896 case TemplateArgument::Template: {
897 Expected<TemplateName> ToTemplateOrErr = import(From: From.getAsTemplate());
898 if (!ToTemplateOrErr)
899 return ToTemplateOrErr.takeError();
900
901 return TemplateArgument(*ToTemplateOrErr, From.getIsDefaulted());
902 }
903
904 case TemplateArgument::TemplateExpansion: {
905 Expected<TemplateName> ToTemplateOrErr =
906 import(From: From.getAsTemplateOrTemplatePattern());
907 if (!ToTemplateOrErr)
908 return ToTemplateOrErr.takeError();
909
910 return TemplateArgument(*ToTemplateOrErr, From.getNumTemplateExpansions(),
911 From.getIsDefaulted());
912 }
913
914 case TemplateArgument::Expression:
915 if (ExpectedExpr ToExpr = import(From: From.getAsExpr()))
916 return TemplateArgument(*ToExpr, From.isCanonicalExpr(),
917 From.getIsDefaulted());
918 else
919 return ToExpr.takeError();
920
921 case TemplateArgument::Pack: {
922 SmallVector<TemplateArgument, 2> ToPack;
923 ToPack.reserve(N: From.pack_size());
924 if (Error Err = ImportTemplateArguments(FromArgs: From.pack_elements(), ToArgs&: ToPack))
925 return std::move(Err);
926
927 return TemplateArgument(ArrayRef(ToPack).copy(A&: Importer.getToContext()));
928 }
929 }
930
931 llvm_unreachable("Invalid template argument kind");
932}
933
934template <>
935Expected<TemplateArgumentLoc>
936ASTNodeImporter::import(const TemplateArgumentLoc &TALoc) {
937 Expected<TemplateArgument> ArgOrErr = import(From: TALoc.getArgument());
938 if (!ArgOrErr)
939 return ArgOrErr.takeError();
940 TemplateArgument Arg = *ArgOrErr;
941
942 TemplateArgumentLocInfo FromInfo = TALoc.getLocInfo();
943
944 TemplateArgumentLocInfo ToInfo;
945 if (Arg.getKind() == TemplateArgument::Expression) {
946 ExpectedExpr E = import(From: FromInfo.getAsExpr());
947 if (!E)
948 return E.takeError();
949 ToInfo = TemplateArgumentLocInfo(*E);
950 } else if (Arg.getKind() == TemplateArgument::Type) {
951 if (auto TSIOrErr = import(From: FromInfo.getAsTypeSourceInfo()))
952 ToInfo = TemplateArgumentLocInfo(*TSIOrErr);
953 else
954 return TSIOrErr.takeError();
955 } else {
956 auto ToTemplateKWLocOrErr = import(From: FromInfo.getTemplateKwLoc());
957 if (!ToTemplateKWLocOrErr)
958 return ToTemplateKWLocOrErr.takeError();
959 auto ToTemplateQualifierLocOrErr = import(From: TALoc.getTemplateQualifierLoc());
960 if (!ToTemplateQualifierLocOrErr)
961 return ToTemplateQualifierLocOrErr.takeError();
962 auto ToTemplateNameLocOrErr = import(From: FromInfo.getTemplateNameLoc());
963 if (!ToTemplateNameLocOrErr)
964 return ToTemplateNameLocOrErr.takeError();
965 auto ToTemplateEllipsisLocOrErr =
966 import(From: FromInfo.getTemplateEllipsisLoc());
967 if (!ToTemplateEllipsisLocOrErr)
968 return ToTemplateEllipsisLocOrErr.takeError();
969 ToInfo = TemplateArgumentLocInfo(
970 Importer.getToContext(), *ToTemplateKWLocOrErr,
971 *ToTemplateQualifierLocOrErr, *ToTemplateNameLocOrErr,
972 *ToTemplateEllipsisLocOrErr);
973 }
974
975 return TemplateArgumentLoc(Arg, ToInfo);
976}
977
978template <>
979Expected<DeclGroupRef> ASTNodeImporter::import(const DeclGroupRef &DG) {
980 if (DG.isNull())
981 return DeclGroupRef::Create(C&: Importer.getToContext(), Decls: nullptr, NumDecls: 0);
982 size_t NumDecls = DG.end() - DG.begin();
983 SmallVector<Decl *, 1> ToDecls;
984 ToDecls.reserve(N: NumDecls);
985 for (Decl *FromD : DG) {
986 if (auto ToDOrErr = import(From: FromD))
987 ToDecls.push_back(Elt: *ToDOrErr);
988 else
989 return ToDOrErr.takeError();
990 }
991 return DeclGroupRef::Create(C&: Importer.getToContext(),
992 Decls: ToDecls.begin(),
993 NumDecls);
994}
995
996template <>
997Expected<ASTNodeImporter::Designator>
998ASTNodeImporter::import(const Designator &D) {
999 if (D.isFieldDesignator()) {
1000 IdentifierInfo *ToFieldName = Importer.Import(FromId: D.getFieldName());
1001
1002 ExpectedSLoc ToDotLocOrErr = import(From: D.getDotLoc());
1003 if (!ToDotLocOrErr)
1004 return ToDotLocOrErr.takeError();
1005
1006 ExpectedSLoc ToFieldLocOrErr = import(From: D.getFieldLoc());
1007 if (!ToFieldLocOrErr)
1008 return ToFieldLocOrErr.takeError();
1009
1010 return DesignatedInitExpr::Designator::CreateFieldDesignator(
1011 FieldName: ToFieldName, DotLoc: *ToDotLocOrErr, FieldLoc: *ToFieldLocOrErr);
1012 }
1013
1014 ExpectedSLoc ToLBracketLocOrErr = import(From: D.getLBracketLoc());
1015 if (!ToLBracketLocOrErr)
1016 return ToLBracketLocOrErr.takeError();
1017
1018 ExpectedSLoc ToRBracketLocOrErr = import(From: D.getRBracketLoc());
1019 if (!ToRBracketLocOrErr)
1020 return ToRBracketLocOrErr.takeError();
1021
1022 if (D.isArrayDesignator())
1023 return Designator::CreateArrayDesignator(Index: D.getArrayIndex(),
1024 LBracketLoc: *ToLBracketLocOrErr,
1025 RBracketLoc: *ToRBracketLocOrErr);
1026
1027 ExpectedSLoc ToEllipsisLocOrErr = import(From: D.getEllipsisLoc());
1028 if (!ToEllipsisLocOrErr)
1029 return ToEllipsisLocOrErr.takeError();
1030
1031 assert(D.isArrayRangeDesignator());
1032 return Designator::CreateArrayRangeDesignator(
1033 Index: D.getArrayIndex(), LBracketLoc: *ToLBracketLocOrErr, EllipsisLoc: *ToEllipsisLocOrErr,
1034 RBracketLoc: *ToRBracketLocOrErr);
1035}
1036
1037template <>
1038Expected<ConceptReference *> ASTNodeImporter::import(ConceptReference *From) {
1039 Error Err = Error::success();
1040 auto ToNNS = importChecked(Err, From: From->getNestedNameSpecifierLoc());
1041 auto ToTemplateKWLoc = importChecked(Err, From: From->getTemplateKWLoc());
1042 auto ToConceptNameLoc =
1043 importChecked(Err, From: From->getConceptNameInfo().getLoc());
1044 auto ToConceptName = importChecked(Err, From: From->getConceptNameInfo().getName());
1045 auto ToFoundDecl = importChecked(Err, From: From->getFoundDecl());
1046 auto ToNamedConcept = importChecked(Err, From: From->getNamedConcept());
1047 if (Err)
1048 return std::move(Err);
1049 TemplateArgumentListInfo ToTAInfo;
1050 const auto *ASTTemplateArgs = From->getTemplateArgsAsWritten();
1051 if (ASTTemplateArgs)
1052 if (Error Err = ImportTemplateArgumentListInfo(From: *ASTTemplateArgs, Result&: ToTAInfo))
1053 return std::move(Err);
1054 auto *ConceptRef = ConceptReference::Create(
1055 C: Importer.getToContext(), NNS: ToNNS, TemplateKWLoc: ToTemplateKWLoc,
1056 ConceptNameInfo: DeclarationNameInfo(ToConceptName, ToConceptNameLoc), FoundDecl: ToFoundDecl,
1057 NamedConcept: ToNamedConcept,
1058 ArgsAsWritten: ASTTemplateArgs ? ASTTemplateArgumentListInfo::Create(
1059 C: Importer.getToContext(), List: ToTAInfo)
1060 : nullptr);
1061 return ConceptRef;
1062}
1063
1064StringRef ASTNodeImporter::ImportASTStringRef(StringRef FromStr) {
1065 char *ToStore = new (Importer.getToContext()) char[FromStr.size()];
1066 std::copy(first: FromStr.begin(), last: FromStr.end(), result: ToStore);
1067 return StringRef(ToStore, FromStr.size());
1068}
1069
1070Error ASTNodeImporter::ImportConstraintSatisfaction(
1071 const ASTConstraintSatisfaction &FromSat, ConstraintSatisfaction &ToSat) {
1072 ToSat.IsSatisfied = FromSat.IsSatisfied;
1073 ToSat.ContainsErrors = FromSat.ContainsErrors;
1074 if (!ToSat.IsSatisfied) {
1075 for (auto Record = FromSat.begin(); Record != FromSat.end(); ++Record) {
1076 if (const Expr *E = Record->dyn_cast<const Expr *>()) {
1077 ExpectedExpr ToSecondExpr = import(From: E);
1078 if (!ToSecondExpr)
1079 return ToSecondExpr.takeError();
1080 ToSat.Details.emplace_back(Args&: ToSecondExpr.get());
1081 } else {
1082 auto Pair =
1083 Record->dyn_cast<const ConstraintSubstitutionDiagnostic *>();
1084
1085 ExpectedSLoc ToPairFirst = import(From: Pair->first);
1086 if (!ToPairFirst)
1087 return ToPairFirst.takeError();
1088 StringRef ToPairSecond = ImportASTStringRef(FromStr: Pair->second);
1089 ToSat.Details.emplace_back(Args: new (Importer.getToContext())
1090 ConstraintSubstitutionDiagnostic{
1091 ToPairFirst.get(), ToPairSecond});
1092 }
1093 }
1094 }
1095 return Error::success();
1096}
1097
1098template <>
1099Expected<concepts::Requirement::SubstitutionDiagnostic *>
1100ASTNodeImporter::import(
1101 concepts::Requirement::SubstitutionDiagnostic *FromDiag) {
1102 StringRef ToEntity = ImportASTStringRef(FromStr: FromDiag->SubstitutedEntity);
1103 ExpectedSLoc ToLoc = import(From: FromDiag->DiagLoc);
1104 if (!ToLoc)
1105 return ToLoc.takeError();
1106 StringRef ToDiagMessage = ImportASTStringRef(FromStr: FromDiag->DiagMessage);
1107 return new (Importer.getToContext())
1108 concepts::Requirement::SubstitutionDiagnostic{.SubstitutedEntity: ToEntity, .DiagLoc: ToLoc.get(),
1109 .DiagMessage: ToDiagMessage};
1110}
1111
1112Expected<concepts::Requirement *>
1113ASTNodeImporter::ImportTypeRequirement(concepts::TypeRequirement *From) {
1114 using namespace concepts;
1115
1116 if (From->isSubstitutionFailure()) {
1117 auto DiagOrErr = import(FromDiag: From->getSubstitutionDiagnostic());
1118 if (!DiagOrErr)
1119 return DiagOrErr.takeError();
1120 return new (Importer.getToContext()) TypeRequirement(*DiagOrErr);
1121 } else {
1122 Expected<TypeSourceInfo *> ToType = import(From: From->getType());
1123 if (!ToType)
1124 return ToType.takeError();
1125 return new (Importer.getToContext()) TypeRequirement(*ToType);
1126 }
1127}
1128
1129Expected<concepts::Requirement *>
1130ASTNodeImporter::ImportExprRequirement(concepts::ExprRequirement *From) {
1131 using namespace concepts;
1132
1133 bool IsRKSimple = From->getKind() == Requirement::RK_Simple;
1134 ExprRequirement::SatisfactionStatus Status = From->getSatisfactionStatus();
1135
1136 std::optional<ExprRequirement::ReturnTypeRequirement> Req;
1137 ConceptSpecializationExpr *SubstitutedConstraintExpr = nullptr;
1138
1139 if (IsRKSimple) {
1140 Req.emplace();
1141 } else {
1142 const ExprRequirement::ReturnTypeRequirement &FromTypeRequirement =
1143 From->getReturnTypeRequirement();
1144
1145 if (FromTypeRequirement.isTypeConstraint()) {
1146 const bool IsDependent = FromTypeRequirement.isDependent();
1147 auto ParamsOrErr =
1148 import(From: FromTypeRequirement.getTypeConstraintTemplateParameterList());
1149 if (!ParamsOrErr)
1150 return ParamsOrErr.takeError();
1151 if (Status >= ExprRequirement::SS_ConstraintsNotSatisfied) {
1152 auto SubstConstraintExprOrErr =
1153 import(From: From->getReturnTypeRequirementSubstitutedConstraintExpr());
1154 if (!SubstConstraintExprOrErr)
1155 return SubstConstraintExprOrErr.takeError();
1156 SubstitutedConstraintExpr = SubstConstraintExprOrErr.get();
1157 }
1158 Req.emplace(args&: ParamsOrErr.get(), args: IsDependent);
1159 } else if (FromTypeRequirement.isSubstitutionFailure()) {
1160 auto DiagOrErr = import(FromDiag: FromTypeRequirement.getSubstitutionDiagnostic());
1161 if (!DiagOrErr)
1162 return DiagOrErr.takeError();
1163 Req.emplace(args&: DiagOrErr.get());
1164 } else {
1165 Req.emplace();
1166 }
1167 }
1168
1169 ExpectedSLoc NoexceptLocOrErr = import(From: From->getNoexceptLoc());
1170 if (!NoexceptLocOrErr)
1171 return NoexceptLocOrErr.takeError();
1172
1173 if (Status == ExprRequirement::SS_ExprSubstitutionFailure) {
1174 auto DiagOrErr = import(FromDiag: From->getExprSubstitutionDiagnostic());
1175 if (!DiagOrErr)
1176 return DiagOrErr.takeError();
1177 return new (Importer.getToContext()) ExprRequirement(
1178 *DiagOrErr, IsRKSimple, *NoexceptLocOrErr, std::move(*Req));
1179 } else {
1180 Expected<Expr *> ExprOrErr = import(From: From->getExpr());
1181 if (!ExprOrErr)
1182 return ExprOrErr.takeError();
1183 return new (Importer.getToContext()) concepts::ExprRequirement(
1184 *ExprOrErr, IsRKSimple, *NoexceptLocOrErr, std::move(*Req), Status,
1185 SubstitutedConstraintExpr);
1186 }
1187}
1188
1189Expected<concepts::Requirement *>
1190ASTNodeImporter::ImportNestedRequirement(concepts::NestedRequirement *From) {
1191 using namespace concepts;
1192
1193 const ASTConstraintSatisfaction &FromSatisfaction =
1194 From->getConstraintSatisfaction();
1195 if (From->hasInvalidConstraint()) {
1196 StringRef ToEntity = ImportASTStringRef(FromStr: From->getInvalidConstraintEntity());
1197 ASTConstraintSatisfaction *ToSatisfaction =
1198 ASTConstraintSatisfaction::Rebuild(C: Importer.getToContext(),
1199 Satisfaction: FromSatisfaction);
1200 return new (Importer.getToContext())
1201 NestedRequirement(ToEntity, ToSatisfaction);
1202 } else {
1203 ExpectedExpr ToExpr = import(From: From->getConstraintExpr());
1204 if (!ToExpr)
1205 return ToExpr.takeError();
1206 if (ToExpr.get()->isInstantiationDependent()) {
1207 return new (Importer.getToContext()) NestedRequirement(ToExpr.get());
1208 } else {
1209 ConstraintSatisfaction Satisfaction;
1210 if (Error Err =
1211 ImportConstraintSatisfaction(FromSat: FromSatisfaction, ToSat&: Satisfaction))
1212 return std::move(Err);
1213 return new (Importer.getToContext()) NestedRequirement(
1214 Importer.getToContext(), ToExpr.get(), Satisfaction);
1215 }
1216 }
1217}
1218
1219template <>
1220Expected<concepts::Requirement *>
1221ASTNodeImporter::import(concepts::Requirement *FromRequire) {
1222 switch (FromRequire->getKind()) {
1223 case concepts::Requirement::RequirementKind::RK_Type:
1224 return ImportTypeRequirement(From: cast<concepts::TypeRequirement>(Val: FromRequire));
1225 case concepts::Requirement::RequirementKind::RK_Compound:
1226 case concepts::Requirement::RequirementKind::RK_Simple:
1227 return ImportExprRequirement(From: cast<concepts::ExprRequirement>(Val: FromRequire));
1228 case concepts::Requirement::RequirementKind::RK_Nested:
1229 return ImportNestedRequirement(
1230 From: cast<concepts::NestedRequirement>(Val: FromRequire));
1231 }
1232 llvm_unreachable("Unhandled requirement kind");
1233}
1234
1235template <>
1236Expected<LambdaCapture> ASTNodeImporter::import(const LambdaCapture &From) {
1237 ValueDecl *Var = nullptr;
1238 if (From.capturesVariable()) {
1239 if (auto VarOrErr = import(From: From.getCapturedVar()))
1240 Var = *VarOrErr;
1241 else
1242 return VarOrErr.takeError();
1243 }
1244
1245 auto LocationOrErr = import(From: From.getLocation());
1246 if (!LocationOrErr)
1247 return LocationOrErr.takeError();
1248
1249 SourceLocation EllipsisLoc;
1250 if (From.isPackExpansion())
1251 if (Error Err = importInto(To&: EllipsisLoc, From: From.getEllipsisLoc()))
1252 return std::move(Err);
1253
1254 return LambdaCapture(
1255 *LocationOrErr, From.isImplicit(), From.getCaptureKind(), Var,
1256 EllipsisLoc);
1257}
1258
1259template <typename T>
1260bool ASTNodeImporter::hasSameVisibilityContextAndLinkage(T *Found, T *From) {
1261 if (Found->getLinkageInternal() != From->getLinkageInternal())
1262 return false;
1263
1264 if (From->hasExternalFormalLinkage())
1265 return Found->hasExternalFormalLinkage();
1266 if (Importer.GetFromTU(ToD: Found) != From->getTranslationUnitDecl())
1267 return false;
1268 if (From->isInAnonymousNamespace())
1269 return Found->isInAnonymousNamespace();
1270 else
1271 return !Found->isInAnonymousNamespace() &&
1272 !Found->hasExternalFormalLinkage();
1273}
1274
1275template <>
1276bool ASTNodeImporter::hasSameVisibilityContextAndLinkage(TypedefNameDecl *Found,
1277 TypedefNameDecl *From) {
1278 if (Found->getLinkageInternal() != From->getLinkageInternal())
1279 return false;
1280
1281 if (From->isInAnonymousNamespace() && Found->isInAnonymousNamespace())
1282 return Importer.GetFromTU(ToD: Found) == From->getTranslationUnitDecl();
1283 return From->isInAnonymousNamespace() == Found->isInAnonymousNamespace();
1284}
1285
1286} // namespace clang
1287
1288//----------------------------------------------------------------------------
1289// Import Types
1290//----------------------------------------------------------------------------
1291
1292using namespace clang;
1293
1294auto ASTImporter::FunctionDeclImportCycleDetector::makeScopedCycleDetection(
1295 const FunctionDecl *D) {
1296 const FunctionDecl *LambdaD = nullptr;
1297 if (!isCycle(D) && D) {
1298 FunctionDeclsWithImportInProgress.insert(V: D);
1299 LambdaD = D;
1300 }
1301 return llvm::scope_exit([this, LambdaD]() {
1302 if (LambdaD) {
1303 FunctionDeclsWithImportInProgress.erase(V: LambdaD);
1304 }
1305 });
1306}
1307
1308bool ASTImporter::FunctionDeclImportCycleDetector::isCycle(
1309 const FunctionDecl *D) const {
1310 return FunctionDeclsWithImportInProgress.find(V: D) !=
1311 FunctionDeclsWithImportInProgress.end();
1312}
1313
1314ExpectedType ASTNodeImporter::VisitType(const Type *T) {
1315 Importer.FromDiag(Loc: SourceLocation(), DiagID: diag::err_unsupported_ast_node)
1316 << T->getTypeClassName();
1317 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
1318}
1319
1320ExpectedType ASTNodeImporter::VisitAtomicType(const AtomicType *T){
1321 ExpectedType UnderlyingTypeOrErr = import(From: T->getValueType());
1322 if (!UnderlyingTypeOrErr)
1323 return UnderlyingTypeOrErr.takeError();
1324
1325 return Importer.getToContext().getAtomicType(T: *UnderlyingTypeOrErr);
1326}
1327
1328ExpectedType ASTNodeImporter::VisitBuiltinType(const BuiltinType *T) {
1329 switch (T->getKind()) {
1330#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
1331 case BuiltinType::Id: \
1332 return Importer.getToContext().SingletonId;
1333#include "clang/Basic/OpenCLImageTypes.def"
1334#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
1335 case BuiltinType::Id: \
1336 return Importer.getToContext().Id##Ty;
1337#include "clang/Basic/OpenCLExtensionTypes.def"
1338#define SVE_TYPE(Name, Id, SingletonId) \
1339 case BuiltinType::Id: \
1340 return Importer.getToContext().SingletonId;
1341#include "clang/Basic/AArch64ACLETypes.def"
1342#define PPC_VECTOR_TYPE(Name, Id, Size) \
1343 case BuiltinType::Id: \
1344 return Importer.getToContext().Id##Ty;
1345#include "clang/Basic/PPCTypes.def"
1346#define RVV_TYPE(Name, Id, SingletonId) \
1347 case BuiltinType::Id: \
1348 return Importer.getToContext().SingletonId;
1349#include "clang/Basic/RISCVVTypes.def"
1350#define WASM_TYPE(Name, Id, SingletonId) \
1351 case BuiltinType::Id: \
1352 return Importer.getToContext().SingletonId;
1353#include "clang/Basic/WebAssemblyReferenceTypes.def"
1354#define AMDGPU_TYPE(Name, Id, SingletonId, Width, Align) \
1355 case BuiltinType::Id: \
1356 return Importer.getToContext().SingletonId;
1357#include "clang/Basic/AMDGPUTypes.def"
1358#define HLSL_INTANGIBLE_TYPE(Name, Id, SingletonId) \
1359 case BuiltinType::Id: \
1360 return Importer.getToContext().SingletonId;
1361#include "clang/Basic/HLSLIntangibleTypes.def"
1362#define SHARED_SINGLETON_TYPE(Expansion)
1363#define BUILTIN_TYPE(Id, SingletonId) \
1364 case BuiltinType::Id: return Importer.getToContext().SingletonId;
1365#include "clang/AST/BuiltinTypes.def"
1366
1367 // FIXME: for Char16, Char32, and NullPtr, make sure that the "to"
1368 // context supports C++.
1369
1370 // FIXME: for ObjCId, ObjCClass, and ObjCSel, make sure that the "to"
1371 // context supports ObjC.
1372
1373 case BuiltinType::Char_U:
1374 // The context we're importing from has an unsigned 'char'. If we're
1375 // importing into a context with a signed 'char', translate to
1376 // 'unsigned char' instead.
1377 if (Importer.getToContext().getLangOpts().CharIsSigned)
1378 return Importer.getToContext().UnsignedCharTy;
1379
1380 return Importer.getToContext().CharTy;
1381
1382 case BuiltinType::Char_S:
1383 // The context we're importing from has an unsigned 'char'. If we're
1384 // importing into a context with a signed 'char', translate to
1385 // 'unsigned char' instead.
1386 if (!Importer.getToContext().getLangOpts().CharIsSigned)
1387 return Importer.getToContext().SignedCharTy;
1388
1389 return Importer.getToContext().CharTy;
1390
1391 case BuiltinType::WChar_S:
1392 case BuiltinType::WChar_U:
1393 // FIXME: If not in C++, shall we translate to the C equivalent of
1394 // wchar_t?
1395 return Importer.getToContext().WCharTy;
1396 }
1397
1398 llvm_unreachable("Invalid BuiltinType Kind!");
1399}
1400
1401ExpectedType ASTNodeImporter::VisitDecayedType(const DecayedType *T) {
1402 ExpectedType ToOriginalTypeOrErr = import(From: T->getOriginalType());
1403 if (!ToOriginalTypeOrErr)
1404 return ToOriginalTypeOrErr.takeError();
1405
1406 return Importer.getToContext().getDecayedType(T: *ToOriginalTypeOrErr);
1407}
1408
1409ExpectedType ASTNodeImporter::VisitComplexType(const ComplexType *T) {
1410 ExpectedType ToElementTypeOrErr = import(From: T->getElementType());
1411 if (!ToElementTypeOrErr)
1412 return ToElementTypeOrErr.takeError();
1413
1414 return Importer.getToContext().getComplexType(T: *ToElementTypeOrErr);
1415}
1416
1417ExpectedType ASTNodeImporter::VisitPointerType(const PointerType *T) {
1418 ExpectedType ToPointeeTypeOrErr = import(From: T->getPointeeType());
1419 if (!ToPointeeTypeOrErr)
1420 return ToPointeeTypeOrErr.takeError();
1421
1422 return Importer.getToContext().getPointerType(T: *ToPointeeTypeOrErr);
1423}
1424
1425ExpectedType ASTNodeImporter::VisitBlockPointerType(const BlockPointerType *T) {
1426 // FIXME: Check for blocks support in "to" context.
1427 ExpectedType ToPointeeTypeOrErr = import(From: T->getPointeeType());
1428 if (!ToPointeeTypeOrErr)
1429 return ToPointeeTypeOrErr.takeError();
1430
1431 return Importer.getToContext().getBlockPointerType(T: *ToPointeeTypeOrErr);
1432}
1433
1434ExpectedType
1435ASTNodeImporter::VisitLValueReferenceType(const LValueReferenceType *T) {
1436 // FIXME: Check for C++ support in "to" context.
1437 ExpectedType ToPointeeTypeOrErr = import(From: T->getPointeeTypeAsWritten());
1438 if (!ToPointeeTypeOrErr)
1439 return ToPointeeTypeOrErr.takeError();
1440
1441 return Importer.getToContext().getLValueReferenceType(T: *ToPointeeTypeOrErr);
1442}
1443
1444ExpectedType
1445ASTNodeImporter::VisitRValueReferenceType(const RValueReferenceType *T) {
1446 // FIXME: Check for C++0x support in "to" context.
1447 ExpectedType ToPointeeTypeOrErr = import(From: T->getPointeeTypeAsWritten());
1448 if (!ToPointeeTypeOrErr)
1449 return ToPointeeTypeOrErr.takeError();
1450
1451 return Importer.getToContext().getRValueReferenceType(T: *ToPointeeTypeOrErr);
1452}
1453
1454ExpectedType
1455ASTNodeImporter::VisitMemberPointerType(const MemberPointerType *T) {
1456 // FIXME: Check for C++ support in "to" context.
1457 ExpectedType ToPointeeTypeOrErr = import(From: T->getPointeeType());
1458 if (!ToPointeeTypeOrErr)
1459 return ToPointeeTypeOrErr.takeError();
1460
1461 auto QualifierOrErr = import(From: T->getQualifier());
1462 if (!QualifierOrErr)
1463 return QualifierOrErr.takeError();
1464
1465 auto ClsOrErr = import(From: T->getMostRecentCXXRecordDecl());
1466 if (!ClsOrErr)
1467 return ClsOrErr.takeError();
1468
1469 return Importer.getToContext().getMemberPointerType(
1470 T: *ToPointeeTypeOrErr, Qualifier: *QualifierOrErr, Cls: *ClsOrErr);
1471}
1472
1473ExpectedType
1474ASTNodeImporter::VisitConstantArrayType(const ConstantArrayType *T) {
1475 Error Err = Error::success();
1476 auto ToElementType = importChecked(Err, From: T->getElementType());
1477 auto ToSizeExpr = importChecked(Err, From: T->getSizeExpr());
1478 if (Err)
1479 return std::move(Err);
1480
1481 return Importer.getToContext().getConstantArrayType(
1482 EltTy: ToElementType, ArySize: T->getSize(), SizeExpr: ToSizeExpr, ASM: T->getSizeModifier(),
1483 IndexTypeQuals: T->getIndexTypeCVRQualifiers());
1484}
1485
1486ExpectedType
1487ASTNodeImporter::VisitArrayParameterType(const ArrayParameterType *T) {
1488 ExpectedType ToArrayTypeOrErr = VisitConstantArrayType(T);
1489 if (!ToArrayTypeOrErr)
1490 return ToArrayTypeOrErr.takeError();
1491
1492 return Importer.getToContext().getArrayParameterType(Ty: *ToArrayTypeOrErr);
1493}
1494
1495ExpectedType
1496ASTNodeImporter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
1497 ExpectedType ToElementTypeOrErr = import(From: T->getElementType());
1498 if (!ToElementTypeOrErr)
1499 return ToElementTypeOrErr.takeError();
1500
1501 return Importer.getToContext().getIncompleteArrayType(EltTy: *ToElementTypeOrErr,
1502 ASM: T->getSizeModifier(),
1503 IndexTypeQuals: T->getIndexTypeCVRQualifiers());
1504}
1505
1506ExpectedType
1507ASTNodeImporter::VisitVariableArrayType(const VariableArrayType *T) {
1508 Error Err = Error::success();
1509 QualType ToElementType = importChecked(Err, From: T->getElementType());
1510 Expr *ToSizeExpr = importChecked(Err, From: T->getSizeExpr());
1511 if (Err)
1512 return std::move(Err);
1513 return Importer.getToContext().getVariableArrayType(
1514 EltTy: ToElementType, NumElts: ToSizeExpr, ASM: T->getSizeModifier(),
1515 IndexTypeQuals: T->getIndexTypeCVRQualifiers());
1516}
1517
1518ExpectedType ASTNodeImporter::VisitDependentSizedArrayType(
1519 const DependentSizedArrayType *T) {
1520 Error Err = Error::success();
1521 QualType ToElementType = importChecked(Err, From: T->getElementType());
1522 Expr *ToSizeExpr = importChecked(Err, From: T->getSizeExpr());
1523 if (Err)
1524 return std::move(Err);
1525 // SizeExpr may be null if size is not specified directly.
1526 // For example, 'int a[]'.
1527
1528 return Importer.getToContext().getDependentSizedArrayType(
1529 EltTy: ToElementType, NumElts: ToSizeExpr, ASM: T->getSizeModifier(),
1530 IndexTypeQuals: T->getIndexTypeCVRQualifiers());
1531}
1532
1533ExpectedType ASTNodeImporter::VisitDependentSizedExtVectorType(
1534 const DependentSizedExtVectorType *T) {
1535 Error Err = Error::success();
1536 QualType ToElementType = importChecked(Err, From: T->getElementType());
1537 Expr *ToSizeExpr = importChecked(Err, From: T->getSizeExpr());
1538 SourceLocation ToAttrLoc = importChecked(Err, From: T->getAttributeLoc());
1539 if (Err)
1540 return std::move(Err);
1541 return Importer.getToContext().getDependentSizedExtVectorType(
1542 VectorType: ToElementType, SizeExpr: ToSizeExpr, AttrLoc: ToAttrLoc);
1543}
1544
1545ExpectedType ASTNodeImporter::VisitVectorType(const VectorType *T) {
1546 ExpectedType ToElementTypeOrErr = import(From: T->getElementType());
1547 if (!ToElementTypeOrErr)
1548 return ToElementTypeOrErr.takeError();
1549
1550 return Importer.getToContext().getVectorType(VectorType: *ToElementTypeOrErr,
1551 NumElts: T->getNumElements(),
1552 VecKind: T->getVectorKind());
1553}
1554
1555ExpectedType ASTNodeImporter::VisitExtVectorType(const ExtVectorType *T) {
1556 ExpectedType ToElementTypeOrErr = import(From: T->getElementType());
1557 if (!ToElementTypeOrErr)
1558 return ToElementTypeOrErr.takeError();
1559
1560 return Importer.getToContext().getExtVectorType(VectorType: *ToElementTypeOrErr,
1561 NumElts: T->getNumElements());
1562}
1563
1564ExpectedType
1565ASTNodeImporter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
1566 // FIXME: What happens if we're importing a function without a prototype
1567 // into C++? Should we make it variadic?
1568 ExpectedType ToReturnTypeOrErr = import(From: T->getReturnType());
1569 if (!ToReturnTypeOrErr)
1570 return ToReturnTypeOrErr.takeError();
1571
1572 return Importer.getToContext().getFunctionNoProtoType(ResultTy: *ToReturnTypeOrErr,
1573 Info: T->getExtInfo());
1574}
1575
1576ExpectedType
1577ASTNodeImporter::VisitFunctionProtoType(const FunctionProtoType *T) {
1578 ExpectedType ToReturnTypeOrErr = import(From: T->getReturnType());
1579 if (!ToReturnTypeOrErr)
1580 return ToReturnTypeOrErr.takeError();
1581
1582 // Import argument types
1583 SmallVector<QualType, 4> ArgTypes;
1584 for (const auto &A : T->param_types()) {
1585 ExpectedType TyOrErr = import(From: A);
1586 if (!TyOrErr)
1587 return TyOrErr.takeError();
1588 ArgTypes.push_back(Elt: *TyOrErr);
1589 }
1590
1591 // Import exception types
1592 SmallVector<QualType, 4> ExceptionTypes;
1593 for (const auto &E : T->exceptions()) {
1594 ExpectedType TyOrErr = import(From: E);
1595 if (!TyOrErr)
1596 return TyOrErr.takeError();
1597 ExceptionTypes.push_back(Elt: *TyOrErr);
1598 }
1599
1600 FunctionProtoType::ExtProtoInfo FromEPI = T->getExtProtoInfo();
1601 Error Err = Error::success();
1602 FunctionProtoType::ExtProtoInfo ToEPI;
1603 ToEPI.ExtInfo = FromEPI.ExtInfo;
1604 ToEPI.Variadic = FromEPI.Variadic;
1605 ToEPI.HasTrailingReturn = FromEPI.HasTrailingReturn;
1606 ToEPI.TypeQuals = FromEPI.TypeQuals;
1607 ToEPI.RefQualifier = FromEPI.RefQualifier;
1608 ToEPI.ExceptionSpec.Type = FromEPI.ExceptionSpec.Type;
1609 ToEPI.ExceptionSpec.NoexceptExpr =
1610 importChecked(Err, From: FromEPI.ExceptionSpec.NoexceptExpr);
1611 ToEPI.ExceptionSpec.SourceDecl =
1612 importChecked(Err, From: FromEPI.ExceptionSpec.SourceDecl);
1613 ToEPI.ExceptionSpec.SourceTemplate =
1614 importChecked(Err, From: FromEPI.ExceptionSpec.SourceTemplate);
1615 ToEPI.ExceptionSpec.Exceptions = ExceptionTypes;
1616
1617 if (Err)
1618 return std::move(Err);
1619
1620 return Importer.getToContext().getFunctionType(
1621 ResultTy: *ToReturnTypeOrErr, Args: ArgTypes, EPI: ToEPI);
1622}
1623
1624ExpectedType ASTNodeImporter::VisitUnresolvedUsingType(
1625 const UnresolvedUsingType *T) {
1626 Error Err = Error::success();
1627 auto ToQualifier = importChecked(Err, From: T->getQualifier());
1628 auto *ToD = importChecked(Err, From: T->getDecl());
1629 if (Err)
1630 return std::move(Err);
1631
1632 if (T->isCanonicalUnqualified())
1633 return Importer.getToContext().getCanonicalUnresolvedUsingType(D: ToD);
1634 return Importer.getToContext().getUnresolvedUsingType(Keyword: T->getKeyword(),
1635 Qualifier: ToQualifier, D: ToD);
1636}
1637
1638ExpectedType ASTNodeImporter::VisitParenType(const ParenType *T) {
1639 ExpectedType ToInnerTypeOrErr = import(From: T->getInnerType());
1640 if (!ToInnerTypeOrErr)
1641 return ToInnerTypeOrErr.takeError();
1642
1643 return Importer.getToContext().getParenType(NamedType: *ToInnerTypeOrErr);
1644}
1645
1646ExpectedType
1647ASTNodeImporter::VisitPackIndexingType(clang::PackIndexingType const *T) {
1648
1649 ExpectedType Pattern = import(From: T->getPattern());
1650 if (!Pattern)
1651 return Pattern.takeError();
1652 ExpectedExpr Index = import(From: T->getIndexExpr());
1653 if (!Index)
1654 return Index.takeError();
1655 return Importer.getToContext().getPackIndexingType(Pattern: *Pattern, IndexExpr: *Index);
1656}
1657
1658ExpectedType ASTNodeImporter::VisitTypedefType(const TypedefType *T) {
1659 Expected<TypedefNameDecl *> ToDeclOrErr = import(From: T->getDecl());
1660 if (!ToDeclOrErr)
1661 return ToDeclOrErr.takeError();
1662
1663 auto ToQualifierOrErr = import(From: T->getQualifier());
1664 if (!ToQualifierOrErr)
1665 return ToQualifierOrErr.takeError();
1666
1667 ExpectedType ToUnderlyingTypeOrErr =
1668 T->typeMatchesDecl() ? QualType() : import(From: T->desugar());
1669 if (!ToUnderlyingTypeOrErr)
1670 return ToUnderlyingTypeOrErr.takeError();
1671
1672 return Importer.getToContext().getTypedefType(
1673 Keyword: T->getKeyword(), Qualifier: *ToQualifierOrErr, Decl: *ToDeclOrErr, UnderlyingType: *ToUnderlyingTypeOrErr);
1674}
1675
1676ExpectedType ASTNodeImporter::VisitTypeOfExprType(const TypeOfExprType *T) {
1677 ExpectedExpr ToExprOrErr = import(From: T->getUnderlyingExpr());
1678 if (!ToExprOrErr)
1679 return ToExprOrErr.takeError();
1680 return Importer.getToContext().getTypeOfExprType(E: *ToExprOrErr, Kind: T->getKind());
1681}
1682
1683ExpectedType ASTNodeImporter::VisitTypeOfType(const TypeOfType *T) {
1684 ExpectedType ToUnderlyingTypeOrErr = import(From: T->getUnmodifiedType());
1685 if (!ToUnderlyingTypeOrErr)
1686 return ToUnderlyingTypeOrErr.takeError();
1687 return Importer.getToContext().getTypeOfType(QT: *ToUnderlyingTypeOrErr,
1688 Kind: T->getKind());
1689}
1690
1691ExpectedType ASTNodeImporter::VisitUsingType(const UsingType *T) {
1692 Error Err = Error::success();
1693 auto ToQualifier = importChecked(Err, From: T->getQualifier());
1694 auto *ToD = importChecked(Err, From: T->getDecl());
1695 QualType ToT = importChecked(Err, From: T->desugar());
1696 if (Err)
1697 return std::move(Err);
1698 return Importer.getToContext().getUsingType(Keyword: T->getKeyword(), Qualifier: ToQualifier, D: ToD,
1699 UnderlyingType: ToT);
1700}
1701
1702ExpectedType ASTNodeImporter::VisitDecltypeType(const DecltypeType *T) {
1703 // FIXME: Make sure that the "to" context supports C++0x!
1704 ExpectedExpr ToExprOrErr = import(From: T->getUnderlyingExpr());
1705 if (!ToExprOrErr)
1706 return ToExprOrErr.takeError();
1707
1708 ExpectedType ToUnderlyingTypeOrErr = import(From: T->getUnderlyingType());
1709 if (!ToUnderlyingTypeOrErr)
1710 return ToUnderlyingTypeOrErr.takeError();
1711
1712 return Importer.getToContext().getDecltypeType(
1713 e: *ToExprOrErr, UnderlyingType: *ToUnderlyingTypeOrErr);
1714}
1715
1716ExpectedType
1717ASTNodeImporter::VisitUnaryTransformType(const UnaryTransformType *T) {
1718 ExpectedType ToBaseTypeOrErr = import(From: T->getBaseType());
1719 if (!ToBaseTypeOrErr)
1720 return ToBaseTypeOrErr.takeError();
1721
1722 ExpectedType ToUnderlyingTypeOrErr = import(From: T->getUnderlyingType());
1723 if (!ToUnderlyingTypeOrErr)
1724 return ToUnderlyingTypeOrErr.takeError();
1725
1726 return Importer.getToContext().getUnaryTransformType(
1727 BaseType: *ToBaseTypeOrErr, UnderlyingType: *ToUnderlyingTypeOrErr, UKind: T->getUTTKind());
1728}
1729
1730ExpectedType ASTNodeImporter::VisitAutoType(const AutoType *T) {
1731 // FIXME: Make sure that the "to" context supports C++11!
1732 ExpectedType ToDeducedTypeOrErr = import(From: T->getDeducedType());
1733 if (!ToDeducedTypeOrErr)
1734 return ToDeducedTypeOrErr.takeError();
1735
1736 ExpectedDecl ToTypeConstraintConcept = import(From: T->getTypeConstraintConcept());
1737 if (!ToTypeConstraintConcept)
1738 return ToTypeConstraintConcept.takeError();
1739
1740 SmallVector<TemplateArgument, 2> ToTemplateArgs;
1741 if (Error Err = ImportTemplateArguments(FromArgs: T->getTypeConstraintArguments(),
1742 ToArgs&: ToTemplateArgs))
1743 return std::move(Err);
1744
1745 return Importer.getToContext().getAutoType(
1746 DeducedType: *ToDeducedTypeOrErr, Keyword: T->getKeyword(), /*IsDependent*/false,
1747 /*IsPack=*/false, TypeConstraintConcept: cast_or_null<ConceptDecl>(Val: *ToTypeConstraintConcept),
1748 TypeConstraintArgs: ToTemplateArgs);
1749}
1750
1751ExpectedType ASTNodeImporter::VisitDeducedTemplateSpecializationType(
1752 const DeducedTemplateSpecializationType *T) {
1753 // FIXME: Make sure that the "to" context supports C++17!
1754 Expected<TemplateName> ToTemplateNameOrErr = import(From: T->getTemplateName());
1755 if (!ToTemplateNameOrErr)
1756 return ToTemplateNameOrErr.takeError();
1757 ExpectedType ToDeducedTypeOrErr = import(From: T->getDeducedType());
1758 if (!ToDeducedTypeOrErr)
1759 return ToDeducedTypeOrErr.takeError();
1760
1761 return Importer.getToContext().getDeducedTemplateSpecializationType(
1762 Keyword: T->getKeyword(), Template: *ToTemplateNameOrErr, DeducedType: *ToDeducedTypeOrErr,
1763 IsDependent: T->isDependentType());
1764}
1765
1766ExpectedType ASTNodeImporter::VisitTagType(const TagType *T) {
1767 TagDecl *DeclForType = T->getDecl();
1768 Expected<TagDecl *> ToDeclOrErr = import(From: DeclForType);
1769 if (!ToDeclOrErr)
1770 return ToDeclOrErr.takeError();
1771
1772 // If there is a definition of the 'OriginalDecl', it should be imported to
1773 // have all information for the type in the "To" AST. (In some cases no
1774 // other reference may exist to the definition decl and it would not be
1775 // imported otherwise.)
1776 Expected<TagDecl *> ToDefDeclOrErr = import(From: DeclForType->getDefinition());
1777 if (!ToDefDeclOrErr)
1778 return ToDefDeclOrErr.takeError();
1779
1780 if (T->isCanonicalUnqualified())
1781 return Importer.getToContext().getCanonicalTagType(TD: *ToDeclOrErr);
1782
1783 auto ToQualifierOrErr = import(From: T->getQualifier());
1784 if (!ToQualifierOrErr)
1785 return ToQualifierOrErr.takeError();
1786
1787 return Importer.getToContext().getTagType(Keyword: T->getKeyword(), Qualifier: *ToQualifierOrErr,
1788 TD: *ToDeclOrErr, OwnsTag: T->isTagOwned());
1789}
1790
1791ExpectedType ASTNodeImporter::VisitEnumType(const EnumType *T) {
1792 return VisitTagType(T);
1793}
1794
1795ExpectedType ASTNodeImporter::VisitRecordType(const RecordType *T) {
1796 return VisitTagType(T);
1797}
1798
1799ExpectedType
1800ASTNodeImporter::VisitInjectedClassNameType(const InjectedClassNameType *T) {
1801 return VisitTagType(T);
1802}
1803
1804ExpectedType ASTNodeImporter::VisitAttributedType(const AttributedType *T) {
1805 ExpectedType ToModifiedTypeOrErr = import(From: T->getModifiedType());
1806 if (!ToModifiedTypeOrErr)
1807 return ToModifiedTypeOrErr.takeError();
1808 ExpectedType ToEquivalentTypeOrErr = import(From: T->getEquivalentType());
1809 if (!ToEquivalentTypeOrErr)
1810 return ToEquivalentTypeOrErr.takeError();
1811
1812 return Importer.getToContext().getAttributedType(
1813 attrKind: T->getAttrKind(), modifiedType: *ToModifiedTypeOrErr, equivalentType: *ToEquivalentTypeOrErr,
1814 attr: T->getAttr());
1815}
1816
1817ExpectedType
1818ASTNodeImporter::VisitCountAttributedType(const CountAttributedType *T) {
1819 ExpectedType ToWrappedTypeOrErr = import(From: T->desugar());
1820 if (!ToWrappedTypeOrErr)
1821 return ToWrappedTypeOrErr.takeError();
1822
1823 Error Err = Error::success();
1824 Expr *CountExpr = importChecked(Err, From: T->getCountExpr());
1825
1826 SmallVector<TypeCoupledDeclRefInfo, 1> CoupledDecls;
1827 for (const TypeCoupledDeclRefInfo &TI : T->dependent_decls()) {
1828 Expected<ValueDecl *> ToDeclOrErr = import(From: TI.getDecl());
1829 if (!ToDeclOrErr)
1830 return ToDeclOrErr.takeError();
1831 CoupledDecls.emplace_back(Args&: *ToDeclOrErr, Args: TI.isDeref());
1832 }
1833
1834 return Importer.getToContext().getCountAttributedType(
1835 T: *ToWrappedTypeOrErr, CountExpr, CountInBytes: T->isCountInBytes(), OrNull: T->isOrNull(),
1836 DependentDecls: ArrayRef(CoupledDecls));
1837}
1838
1839ExpectedType ASTNodeImporter::VisitTemplateTypeParmType(
1840 const TemplateTypeParmType *T) {
1841 Expected<TemplateTypeParmDecl *> ToDeclOrErr = import(From: T->getDecl());
1842 if (!ToDeclOrErr)
1843 return ToDeclOrErr.takeError();
1844
1845 return Importer.getToContext().getTemplateTypeParmType(
1846 Depth: T->getDepth(), Index: T->getIndex(), ParameterPack: T->isParameterPack(), ParmDecl: *ToDeclOrErr);
1847}
1848
1849ExpectedType ASTNodeImporter::VisitSubstTemplateTypeParmType(
1850 const SubstTemplateTypeParmType *T) {
1851 Expected<Decl *> ReplacedOrErr = import(From: T->getAssociatedDecl());
1852 if (!ReplacedOrErr)
1853 return ReplacedOrErr.takeError();
1854
1855 ExpectedType ToReplacementTypeOrErr = import(From: T->getReplacementType());
1856 if (!ToReplacementTypeOrErr)
1857 return ToReplacementTypeOrErr.takeError();
1858
1859 return Importer.getToContext().getSubstTemplateTypeParmType(
1860 Replacement: *ToReplacementTypeOrErr, AssociatedDecl: *ReplacedOrErr, Index: T->getIndex(), PackIndex: T->getPackIndex(),
1861 Final: T->getFinal());
1862}
1863
1864ExpectedType ASTNodeImporter::VisitSubstTemplateTypeParmPackType(
1865 const SubstTemplateTypeParmPackType *T) {
1866 Expected<Decl *> ReplacedOrErr = import(From: T->getAssociatedDecl());
1867 if (!ReplacedOrErr)
1868 return ReplacedOrErr.takeError();
1869
1870 Expected<TemplateArgument> ToArgumentPack = import(From: T->getArgumentPack());
1871 if (!ToArgumentPack)
1872 return ToArgumentPack.takeError();
1873
1874 return Importer.getToContext().getSubstTemplateTypeParmPackType(
1875 AssociatedDecl: *ReplacedOrErr, Index: T->getIndex(), Final: T->getFinal(), ArgPack: *ToArgumentPack);
1876}
1877
1878ExpectedType ASTNodeImporter::VisitSubstBuiltinTemplatePackType(
1879 const SubstBuiltinTemplatePackType *T) {
1880 Expected<TemplateArgument> ToArgumentPack = import(From: T->getArgumentPack());
1881 if (!ToArgumentPack)
1882 return ToArgumentPack.takeError();
1883 return Importer.getToContext().getSubstBuiltinTemplatePack(ArgPack: *ToArgumentPack);
1884}
1885
1886ExpectedType ASTNodeImporter::VisitTemplateSpecializationType(
1887 const TemplateSpecializationType *T) {
1888 auto ToTemplateOrErr = import(From: T->getTemplateName());
1889 if (!ToTemplateOrErr)
1890 return ToTemplateOrErr.takeError();
1891
1892 SmallVector<TemplateArgument, 2> ToTemplateArgs;
1893 if (Error Err =
1894 ImportTemplateArguments(FromArgs: T->template_arguments(), ToArgs&: ToTemplateArgs))
1895 return std::move(Err);
1896
1897 ExpectedType ToUnderlyingOrErr =
1898 T->isCanonicalUnqualified() ? QualType() : import(From: T->desugar());
1899 if (!ToUnderlyingOrErr)
1900 return ToUnderlyingOrErr.takeError();
1901 return Importer.getToContext().getTemplateSpecializationType(
1902 Keyword: T->getKeyword(), T: *ToTemplateOrErr, SpecifiedArgs: ToTemplateArgs, CanonicalArgs: {},
1903 Underlying: *ToUnderlyingOrErr);
1904}
1905
1906ExpectedType
1907ASTNodeImporter::VisitPackExpansionType(const PackExpansionType *T) {
1908 ExpectedType ToPatternOrErr = import(From: T->getPattern());
1909 if (!ToPatternOrErr)
1910 return ToPatternOrErr.takeError();
1911
1912 return Importer.getToContext().getPackExpansionType(Pattern: *ToPatternOrErr,
1913 NumExpansions: T->getNumExpansions(),
1914 /*ExpactPack=*/ExpectPackInType: false);
1915}
1916
1917ExpectedType
1918ASTNodeImporter::VisitDependentNameType(const DependentNameType *T) {
1919 auto ToQualifierOrErr = import(From: T->getQualifier());
1920 if (!ToQualifierOrErr)
1921 return ToQualifierOrErr.takeError();
1922
1923 IdentifierInfo *Name = Importer.Import(FromId: T->getIdentifier());
1924 return Importer.getToContext().getDependentNameType(Keyword: T->getKeyword(),
1925 NNS: *ToQualifierOrErr, Name);
1926}
1927
1928ExpectedType
1929ASTNodeImporter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
1930 Expected<ObjCInterfaceDecl *> ToDeclOrErr = import(From: T->getDecl());
1931 if (!ToDeclOrErr)
1932 return ToDeclOrErr.takeError();
1933
1934 return Importer.getToContext().getObjCInterfaceType(Decl: *ToDeclOrErr);
1935}
1936
1937ExpectedType ASTNodeImporter::VisitObjCObjectType(const ObjCObjectType *T) {
1938 ExpectedType ToBaseTypeOrErr = import(From: T->getBaseType());
1939 if (!ToBaseTypeOrErr)
1940 return ToBaseTypeOrErr.takeError();
1941
1942 SmallVector<QualType, 4> TypeArgs;
1943 for (auto TypeArg : T->getTypeArgsAsWritten()) {
1944 if (ExpectedType TyOrErr = import(From: TypeArg))
1945 TypeArgs.push_back(Elt: *TyOrErr);
1946 else
1947 return TyOrErr.takeError();
1948 }
1949
1950 SmallVector<ObjCProtocolDecl *, 4> Protocols;
1951 for (auto *P : T->quals()) {
1952 if (Expected<ObjCProtocolDecl *> ProtocolOrErr = import(From: P))
1953 Protocols.push_back(Elt: *ProtocolOrErr);
1954 else
1955 return ProtocolOrErr.takeError();
1956
1957 }
1958
1959 return Importer.getToContext().getObjCObjectType(Base: *ToBaseTypeOrErr, typeArgs: TypeArgs,
1960 protocols: Protocols,
1961 isKindOf: T->isKindOfTypeAsWritten());
1962}
1963
1964ExpectedType
1965ASTNodeImporter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
1966 ExpectedType ToPointeeTypeOrErr = import(From: T->getPointeeType());
1967 if (!ToPointeeTypeOrErr)
1968 return ToPointeeTypeOrErr.takeError();
1969
1970 return Importer.getToContext().getObjCObjectPointerType(OIT: *ToPointeeTypeOrErr);
1971}
1972
1973ExpectedType
1974ASTNodeImporter::VisitMacroQualifiedType(const MacroQualifiedType *T) {
1975 ExpectedType ToUnderlyingTypeOrErr = import(From: T->getUnderlyingType());
1976 if (!ToUnderlyingTypeOrErr)
1977 return ToUnderlyingTypeOrErr.takeError();
1978
1979 IdentifierInfo *ToIdentifier = Importer.Import(FromId: T->getMacroIdentifier());
1980 return Importer.getToContext().getMacroQualifiedType(UnderlyingTy: *ToUnderlyingTypeOrErr,
1981 MacroII: ToIdentifier);
1982}
1983
1984ExpectedType clang::ASTNodeImporter::VisitAdjustedType(const AdjustedType *T) {
1985 Error Err = Error::success();
1986 QualType ToOriginalType = importChecked(Err, From: T->getOriginalType());
1987 QualType ToAdjustedType = importChecked(Err, From: T->getAdjustedType());
1988 if (Err)
1989 return std::move(Err);
1990
1991 return Importer.getToContext().getAdjustedType(Orig: ToOriginalType,
1992 New: ToAdjustedType);
1993}
1994
1995ExpectedType clang::ASTNodeImporter::VisitBitIntType(const BitIntType *T) {
1996 return Importer.getToContext().getBitIntType(Unsigned: T->isUnsigned(),
1997 NumBits: T->getNumBits());
1998}
1999
2000ExpectedType clang::ASTNodeImporter::VisitBTFTagAttributedType(
2001 const clang::BTFTagAttributedType *T) {
2002 Error Err = Error::success();
2003 const BTFTypeTagAttr *ToBTFAttr = importChecked(Err, From: T->getAttr());
2004 QualType ToWrappedType = importChecked(Err, From: T->getWrappedType());
2005 if (Err)
2006 return std::move(Err);
2007
2008 return Importer.getToContext().getBTFTagAttributedType(BTFAttr: ToBTFAttr,
2009 Wrapped: ToWrappedType);
2010}
2011
2012ExpectedType clang::ASTNodeImporter::VisitOverflowBehaviorType(
2013 const clang::OverflowBehaviorType *T) {
2014 Error Err = Error::success();
2015 OverflowBehaviorType::OverflowBehaviorKind ToKind = T->getBehaviorKind();
2016 QualType ToUnderlyingType = importChecked(Err, From: T->getUnderlyingType());
2017 if (Err)
2018 return std::move(Err);
2019
2020 return Importer.getToContext().getOverflowBehaviorType(Kind: ToKind,
2021 Wrapped: ToUnderlyingType);
2022}
2023
2024ExpectedType clang::ASTNodeImporter::VisitHLSLAttributedResourceType(
2025 const clang::HLSLAttributedResourceType *T) {
2026 Error Err = Error::success();
2027 const HLSLAttributedResourceType::Attributes &ToAttrs = T->getAttrs();
2028 QualType ToWrappedType = importChecked(Err, From: T->getWrappedType());
2029 QualType ToContainedType = importChecked(Err, From: T->getContainedType());
2030 if (Err)
2031 return std::move(Err);
2032
2033 return Importer.getToContext().getHLSLAttributedResourceType(
2034 Wrapped: ToWrappedType, Contained: ToContainedType, Attrs: ToAttrs);
2035}
2036
2037ExpectedType clang::ASTNodeImporter::VisitHLSLInlineSpirvType(
2038 const clang::HLSLInlineSpirvType *T) {
2039 Error Err = Error::success();
2040
2041 uint32_t ToOpcode = T->getOpcode();
2042 uint32_t ToSize = T->getSize();
2043 uint32_t ToAlignment = T->getAlignment();
2044
2045 llvm::SmallVector<SpirvOperand> ToOperands;
2046
2047 for (auto &Operand : T->getOperands()) {
2048 using SpirvOperandKind = SpirvOperand::SpirvOperandKind;
2049
2050 switch (Operand.getKind()) {
2051 case SpirvOperandKind::ConstantId:
2052 ToOperands.push_back(Elt: SpirvOperand::createConstant(
2053 ResultType: importChecked(Err, From: Operand.getResultType()), Val: Operand.getValue()));
2054 break;
2055 case SpirvOperandKind::Literal:
2056 ToOperands.push_back(Elt: SpirvOperand::createLiteral(Val: Operand.getValue()));
2057 break;
2058 case SpirvOperandKind::TypeId:
2059 ToOperands.push_back(Elt: SpirvOperand::createType(
2060 T: importChecked(Err, From: Operand.getResultType())));
2061 break;
2062 default:
2063 llvm_unreachable("Invalid SpirvOperand kind");
2064 }
2065
2066 if (Err)
2067 return std::move(Err);
2068 }
2069
2070 return Importer.getToContext().getHLSLInlineSpirvType(
2071 Opcode: ToOpcode, Size: ToSize, Alignment: ToAlignment, Operands: ToOperands);
2072}
2073
2074ExpectedType clang::ASTNodeImporter::VisitConstantMatrixType(
2075 const clang::ConstantMatrixType *T) {
2076 ExpectedType ToElementTypeOrErr = import(From: T->getElementType());
2077 if (!ToElementTypeOrErr)
2078 return ToElementTypeOrErr.takeError();
2079
2080 return Importer.getToContext().getConstantMatrixType(
2081 ElementType: *ToElementTypeOrErr, NumRows: T->getNumRows(), NumColumns: T->getNumColumns());
2082}
2083
2084ExpectedType clang::ASTNodeImporter::VisitDependentAddressSpaceType(
2085 const clang::DependentAddressSpaceType *T) {
2086 Error Err = Error::success();
2087 QualType ToPointeeType = importChecked(Err, From: T->getPointeeType());
2088 Expr *ToAddrSpaceExpr = importChecked(Err, From: T->getAddrSpaceExpr());
2089 SourceLocation ToAttrLoc = importChecked(Err, From: T->getAttributeLoc());
2090 if (Err)
2091 return std::move(Err);
2092
2093 return Importer.getToContext().getDependentAddressSpaceType(
2094 PointeeType: ToPointeeType, AddrSpaceExpr: ToAddrSpaceExpr, AttrLoc: ToAttrLoc);
2095}
2096
2097ExpectedType clang::ASTNodeImporter::VisitDependentBitIntType(
2098 const clang::DependentBitIntType *T) {
2099 ExpectedExpr ToNumBitsExprOrErr = import(From: T->getNumBitsExpr());
2100 if (!ToNumBitsExprOrErr)
2101 return ToNumBitsExprOrErr.takeError();
2102 return Importer.getToContext().getDependentBitIntType(Unsigned: T->isUnsigned(),
2103 BitsExpr: *ToNumBitsExprOrErr);
2104}
2105
2106ExpectedType clang::ASTNodeImporter::VisitPredefinedSugarType(
2107 const clang::PredefinedSugarType *T) {
2108 return Importer.getToContext().getPredefinedSugarType(KD: T->getKind());
2109}
2110
2111ExpectedType clang::ASTNodeImporter::VisitDependentSizedMatrixType(
2112 const clang::DependentSizedMatrixType *T) {
2113 Error Err = Error::success();
2114 QualType ToElementType = importChecked(Err, From: T->getElementType());
2115 Expr *ToRowExpr = importChecked(Err, From: T->getRowExpr());
2116 Expr *ToColumnExpr = importChecked(Err, From: T->getColumnExpr());
2117 SourceLocation ToAttrLoc = importChecked(Err, From: T->getAttributeLoc());
2118 if (Err)
2119 return std::move(Err);
2120
2121 return Importer.getToContext().getDependentSizedMatrixType(
2122 ElementType: ToElementType, RowExpr: ToRowExpr, ColumnExpr: ToColumnExpr, AttrLoc: ToAttrLoc);
2123}
2124
2125ExpectedType clang::ASTNodeImporter::VisitDependentVectorType(
2126 const clang::DependentVectorType *T) {
2127 Error Err = Error::success();
2128 QualType ToElementType = importChecked(Err, From: T->getElementType());
2129 Expr *ToSizeExpr = importChecked(Err, From: T->getSizeExpr());
2130 SourceLocation ToAttrLoc = importChecked(Err, From: T->getAttributeLoc());
2131 if (Err)
2132 return std::move(Err);
2133
2134 return Importer.getToContext().getDependentVectorType(
2135 VectorType: ToElementType, SizeExpr: ToSizeExpr, AttrLoc: ToAttrLoc, VecKind: T->getVectorKind());
2136}
2137
2138ExpectedType clang::ASTNodeImporter::VisitObjCTypeParamType(
2139 const clang::ObjCTypeParamType *T) {
2140 Expected<ObjCTypeParamDecl *> ToDeclOrErr = import(From: T->getDecl());
2141 if (!ToDeclOrErr)
2142 return ToDeclOrErr.takeError();
2143
2144 SmallVector<ObjCProtocolDecl *, 4> ToProtocols;
2145 for (ObjCProtocolDecl *FromProtocol : T->getProtocols()) {
2146 Expected<ObjCProtocolDecl *> ToProtocolOrErr = import(From: FromProtocol);
2147 if (!ToProtocolOrErr)
2148 return ToProtocolOrErr.takeError();
2149 ToProtocols.push_back(Elt: *ToProtocolOrErr);
2150 }
2151
2152 return Importer.getToContext().getObjCTypeParamType(Decl: *ToDeclOrErr,
2153 protocols: ToProtocols);
2154}
2155
2156ExpectedType clang::ASTNodeImporter::VisitPipeType(const clang::PipeType *T) {
2157 ExpectedType ToElementTypeOrErr = import(From: T->getElementType());
2158 if (!ToElementTypeOrErr)
2159 return ToElementTypeOrErr.takeError();
2160
2161 ASTContext &ToCtx = Importer.getToContext();
2162 if (T->isReadOnly())
2163 return ToCtx.getReadPipeType(T: *ToElementTypeOrErr);
2164 else
2165 return ToCtx.getWritePipeType(T: *ToElementTypeOrErr);
2166}
2167
2168//----------------------------------------------------------------------------
2169// Import Declarations
2170//----------------------------------------------------------------------------
2171Error ASTNodeImporter::ImportDeclParts(
2172 NamedDecl *D, DeclContext *&DC, DeclContext *&LexicalDC,
2173 DeclarationName &Name, NamedDecl *&ToD, SourceLocation &Loc) {
2174 // Check if RecordDecl is in FunctionDecl parameters to avoid infinite loop.
2175 // example: int struct_in_proto(struct data_t{int a;int b;} *d);
2176 // FIXME: We could support these constructs by importing a different type of
2177 // this parameter and by importing the original type of the parameter only
2178 // after the FunctionDecl is created. See
2179 // VisitFunctionDecl::UsedDifferentProtoType.
2180 DeclContext *OrigDC = D->getDeclContext();
2181 FunctionDecl *FunDecl;
2182 if (isa<RecordDecl>(Val: D) && (FunDecl = dyn_cast<FunctionDecl>(Val: OrigDC)) &&
2183 FunDecl->hasBody()) {
2184 auto getLeafPointeeType = [](const Type *T) {
2185 while (T->isPointerType() || T->isArrayType()) {
2186 T = T->getPointeeOrArrayElementType();
2187 }
2188 return T;
2189 };
2190 for (const ParmVarDecl *P : FunDecl->parameters()) {
2191 const Type *LeafT =
2192 getLeafPointeeType(P->getType().getCanonicalType().getTypePtr());
2193 auto *RT = dyn_cast<RecordType>(Val: LeafT);
2194 if (RT && RT->getDecl() == D) {
2195 Importer.FromDiag(Loc: D->getLocation(), DiagID: diag::err_unsupported_ast_node)
2196 << D->getDeclKindName();
2197 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
2198 }
2199 }
2200 }
2201
2202 // Import the context of this declaration.
2203 if (Error Err = ImportDeclContext(From: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
2204 return Err;
2205
2206 // Import the name of this declaration.
2207 if (Error Err = importInto(To&: Name, From: D->getDeclName()))
2208 return Err;
2209
2210 // Import the location of this declaration.
2211 if (Error Err = importInto(To&: Loc, From: D->getLocation()))
2212 return Err;
2213
2214 ToD = cast_or_null<NamedDecl>(Val: Importer.GetAlreadyImportedOrNull(FromD: D));
2215 if (ToD)
2216 if (Error Err = ASTNodeImporter(*this).ImportDefinitionIfNeeded(FromD: D, ToD))
2217 return Err;
2218
2219 return Error::success();
2220}
2221
2222Error ASTNodeImporter::ImportDeclParts(NamedDecl *D, DeclarationName &Name,
2223 NamedDecl *&ToD, SourceLocation &Loc) {
2224
2225 // Import the name of this declaration.
2226 if (Error Err = importInto(To&: Name, From: D->getDeclName()))
2227 return Err;
2228
2229 // Import the location of this declaration.
2230 if (Error Err = importInto(To&: Loc, From: D->getLocation()))
2231 return Err;
2232
2233 ToD = cast_or_null<NamedDecl>(Val: Importer.GetAlreadyImportedOrNull(FromD: D));
2234 if (ToD)
2235 if (Error Err = ASTNodeImporter(*this).ImportDefinitionIfNeeded(FromD: D, ToD))
2236 return Err;
2237
2238 return Error::success();
2239}
2240
2241Error ASTNodeImporter::ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD) {
2242 if (!FromD)
2243 return Error::success();
2244
2245 if (!ToD)
2246 if (Error Err = importInto(To&: ToD, From: FromD))
2247 return Err;
2248
2249 if (RecordDecl *FromRecord = dyn_cast<RecordDecl>(Val: FromD)) {
2250 if (RecordDecl *ToRecord = cast<RecordDecl>(Val: ToD)) {
2251 if (FromRecord->getDefinition() && FromRecord->isCompleteDefinition() &&
2252 !ToRecord->getDefinition()) {
2253 if (Error Err = ImportDefinition(From: FromRecord, To: ToRecord))
2254 return Err;
2255 }
2256 }
2257 return Error::success();
2258 }
2259
2260 if (EnumDecl *FromEnum = dyn_cast<EnumDecl>(Val: FromD)) {
2261 if (EnumDecl *ToEnum = cast<EnumDecl>(Val: ToD)) {
2262 if (FromEnum->getDefinition() && !ToEnum->getDefinition()) {
2263 if (Error Err = ImportDefinition(From: FromEnum, To: ToEnum))
2264 return Err;
2265 }
2266 }
2267 return Error::success();
2268 }
2269
2270 return Error::success();
2271}
2272
2273Error
2274ASTNodeImporter::ImportDeclarationNameLoc(
2275 const DeclarationNameInfo &From, DeclarationNameInfo& To) {
2276 // NOTE: To.Name and To.Loc are already imported.
2277 // We only have to import To.LocInfo.
2278 switch (To.getName().getNameKind()) {
2279 case DeclarationName::Identifier:
2280 case DeclarationName::ObjCZeroArgSelector:
2281 case DeclarationName::ObjCOneArgSelector:
2282 case DeclarationName::ObjCMultiArgSelector:
2283 case DeclarationName::CXXUsingDirective:
2284 case DeclarationName::CXXDeductionGuideName:
2285 return Error::success();
2286
2287 case DeclarationName::CXXOperatorName: {
2288 if (auto ToRangeOrErr = import(From: From.getCXXOperatorNameRange()))
2289 To.setCXXOperatorNameRange(*ToRangeOrErr);
2290 else
2291 return ToRangeOrErr.takeError();
2292 return Error::success();
2293 }
2294 case DeclarationName::CXXLiteralOperatorName: {
2295 if (ExpectedSLoc LocOrErr = import(From: From.getCXXLiteralOperatorNameLoc()))
2296 To.setCXXLiteralOperatorNameLoc(*LocOrErr);
2297 else
2298 return LocOrErr.takeError();
2299 return Error::success();
2300 }
2301 case DeclarationName::CXXConstructorName:
2302 case DeclarationName::CXXDestructorName:
2303 case DeclarationName::CXXConversionFunctionName: {
2304 if (auto ToTInfoOrErr = import(From: From.getNamedTypeInfo()))
2305 To.setNamedTypeInfo(*ToTInfoOrErr);
2306 else
2307 return ToTInfoOrErr.takeError();
2308 return Error::success();
2309 }
2310 }
2311 llvm_unreachable("Unknown name kind.");
2312}
2313
2314Error
2315ASTNodeImporter::ImportDeclContext(DeclContext *FromDC, bool ForceImport) {
2316 if (Importer.isMinimalImport() && !ForceImport) {
2317 auto ToDCOrErr = Importer.ImportContext(FromDC);
2318 return ToDCOrErr.takeError();
2319 }
2320
2321 // We use strict error handling in case of records and enums, but not
2322 // with e.g. namespaces.
2323 //
2324 // FIXME Clients of the ASTImporter should be able to choose an
2325 // appropriate error handling strategy for their needs. For instance,
2326 // they may not want to mark an entire namespace as erroneous merely
2327 // because there is an ODR error with two typedefs. As another example,
2328 // the client may allow EnumConstantDecls with same names but with
2329 // different values in two distinct translation units.
2330 ChildErrorHandlingStrategy HandleChildErrors(FromDC);
2331
2332 auto MightNeedReordering = [](const Decl *D) {
2333 return isa<FieldDecl>(Val: D) || isa<IndirectFieldDecl>(Val: D) || isa<FriendDecl>(Val: D);
2334 };
2335
2336 // Import everything that might need reordering first.
2337 Error ChildErrors = Error::success();
2338 for (auto *From : FromDC->decls()) {
2339 if (!MightNeedReordering(From))
2340 continue;
2341
2342 ExpectedDecl ImportedOrErr = import(From);
2343
2344 // If we are in the process of ImportDefinition(...) for a RecordDecl we
2345 // want to make sure that we are also completing each FieldDecl. There
2346 // are currently cases where this does not happen and this is correctness
2347 // fix since operations such as code generation will expect this to be so.
2348 if (!ImportedOrErr) {
2349 HandleChildErrors.handleChildImportResult(ResultErr&: ChildErrors,
2350 ChildErr: ImportedOrErr.takeError());
2351 continue;
2352 }
2353 FieldDecl *FieldFrom = dyn_cast_or_null<FieldDecl>(Val: From);
2354 Decl *ImportedDecl = *ImportedOrErr;
2355 FieldDecl *FieldTo = dyn_cast_or_null<FieldDecl>(Val: ImportedDecl);
2356 if (FieldFrom && FieldTo) {
2357 Error Err = ImportFieldDeclDefinition(From: FieldFrom, To: FieldTo);
2358 HandleChildErrors.handleChildImportResult(ResultErr&: ChildErrors, ChildErr: std::move(Err));
2359 }
2360 }
2361
2362 // We reorder declarations in RecordDecls because they may have another order
2363 // in the "to" context than they have in the "from" context. This may happen
2364 // e.g when we import a class like this:
2365 // struct declToImport {
2366 // int a = c + b;
2367 // int b = 1;
2368 // int c = 2;
2369 // };
2370 // During the import of `a` we import first the dependencies in sequence,
2371 // thus the order would be `c`, `b`, `a`. We will get the normal order by
2372 // first removing the already imported members and then adding them in the
2373 // order as they appear in the "from" context.
2374 //
2375 // Keeping field order is vital because it determines structure layout.
2376 //
2377 // Here and below, we cannot call field_begin() method and its callers on
2378 // ToDC if it has an external storage. Calling field_begin() will
2379 // automatically load all the fields by calling
2380 // LoadFieldsFromExternalStorage(). LoadFieldsFromExternalStorage() would
2381 // call ASTImporter::Import(). This is because the ExternalASTSource
2382 // interface in LLDB is implemented by the means of the ASTImporter. However,
2383 // calling an import at this point would result in an uncontrolled import, we
2384 // must avoid that.
2385
2386 auto ToDCOrErr = Importer.ImportContext(FromDC);
2387 if (!ToDCOrErr) {
2388 consumeError(Err: std::move(ChildErrors));
2389 return ToDCOrErr.takeError();
2390 }
2391
2392 if (const auto *FromRD = dyn_cast<RecordDecl>(Val: FromDC)) {
2393 DeclContext *ToDC = *ToDCOrErr;
2394 // Remove all declarations, which may be in wrong order in the
2395 // lexical DeclContext and then add them in the proper order.
2396 for (auto *D : FromRD->decls()) {
2397 if (!MightNeedReordering(D))
2398 continue;
2399
2400 assert(D && "DC contains a null decl");
2401 if (Decl *ToD = Importer.GetAlreadyImportedOrNull(FromD: D)) {
2402 // Remove only the decls which we successfully imported.
2403 assert(ToDC == ToD->getLexicalDeclContext() && ToDC->containsDecl(ToD));
2404 // Remove the decl from its wrong place in the linked list.
2405 ToDC->removeDecl(D: ToD);
2406 // Add the decl to the end of the linked list.
2407 // This time it will be at the proper place because the enclosing for
2408 // loop iterates in the original (good) order of the decls.
2409 ToDC->addDeclInternal(D: ToD);
2410 }
2411 }
2412 }
2413
2414 // Import everything else.
2415 for (auto *From : FromDC->decls()) {
2416 if (MightNeedReordering(From))
2417 continue;
2418
2419 ExpectedDecl ImportedOrErr = import(From);
2420 if (!ImportedOrErr)
2421 HandleChildErrors.handleChildImportResult(ResultErr&: ChildErrors,
2422 ChildErr: ImportedOrErr.takeError());
2423 }
2424
2425 return ChildErrors;
2426}
2427
2428Error ASTNodeImporter::ImportFieldDeclDefinition(const FieldDecl *From,
2429 const FieldDecl *To) {
2430 RecordDecl *FromRecordDecl = nullptr;
2431 RecordDecl *ToRecordDecl = nullptr;
2432 // If we have a field that is an ArrayType we need to check if the array
2433 // element is a RecordDecl and if so we need to import the definition.
2434 QualType FromType = From->getType();
2435 QualType ToType = To->getType();
2436 if (FromType->isArrayType()) {
2437 // getBaseElementTypeUnsafe(...) handles multi-dimensional arrays for us.
2438 FromRecordDecl = FromType->getBaseElementTypeUnsafe()->getAsRecordDecl();
2439 ToRecordDecl = ToType->getBaseElementTypeUnsafe()->getAsRecordDecl();
2440 }
2441
2442 if (!FromRecordDecl || !ToRecordDecl) {
2443 const RecordType *RecordFrom = FromType->getAs<RecordType>();
2444 const RecordType *RecordTo = ToType->getAs<RecordType>();
2445
2446 if (RecordFrom && RecordTo) {
2447 FromRecordDecl = RecordFrom->getDecl();
2448 ToRecordDecl = RecordTo->getDecl();
2449 }
2450 }
2451
2452 if (FromRecordDecl && ToRecordDecl) {
2453 if (FromRecordDecl->isCompleteDefinition() &&
2454 !ToRecordDecl->isCompleteDefinition())
2455 return ImportDefinition(From: FromRecordDecl, To: ToRecordDecl);
2456 }
2457
2458 return Error::success();
2459}
2460
2461Error ASTNodeImporter::ImportDeclContext(
2462 Decl *FromD, DeclContext *&ToDC, DeclContext *&ToLexicalDC) {
2463 auto ToDCOrErr = Importer.ImportContext(FromDC: FromD->getDeclContext());
2464 if (!ToDCOrErr)
2465 return ToDCOrErr.takeError();
2466 ToDC = *ToDCOrErr;
2467
2468 if (FromD->getDeclContext() != FromD->getLexicalDeclContext()) {
2469 auto ToLexicalDCOrErr = Importer.ImportContext(
2470 FromDC: FromD->getLexicalDeclContext());
2471 if (!ToLexicalDCOrErr)
2472 return ToLexicalDCOrErr.takeError();
2473 ToLexicalDC = *ToLexicalDCOrErr;
2474 } else
2475 ToLexicalDC = ToDC;
2476
2477 return Error::success();
2478}
2479
2480Error ASTNodeImporter::ImportImplicitMethods(
2481 const CXXRecordDecl *From, CXXRecordDecl *To) {
2482 assert(From->isCompleteDefinition() && To->getDefinition() == To &&
2483 "Import implicit methods to or from non-definition");
2484
2485 for (CXXMethodDecl *FromM : From->methods())
2486 if (FromM->isImplicit()) {
2487 Expected<CXXMethodDecl *> ToMOrErr = import(From: FromM);
2488 if (!ToMOrErr)
2489 return ToMOrErr.takeError();
2490 }
2491
2492 return Error::success();
2493}
2494
2495static Error setTypedefNameForAnonDecl(TagDecl *From, TagDecl *To,
2496 ASTImporter &Importer) {
2497 if (TypedefNameDecl *FromTypedef = From->getTypedefNameForAnonDecl()) {
2498 if (ExpectedDecl ToTypedefOrErr = Importer.Import(FromD: FromTypedef))
2499 To->setTypedefNameForAnonDecl(cast<TypedefNameDecl>(Val: *ToTypedefOrErr));
2500 else
2501 return ToTypedefOrErr.takeError();
2502 }
2503 return Error::success();
2504}
2505
2506Error ASTNodeImporter::ImportDefinition(
2507 RecordDecl *From, RecordDecl *To, ImportDefinitionKind Kind) {
2508 auto DefinitionCompleter = [To]() {
2509 // There are cases in LLDB when we first import a class without its
2510 // members. The class will have DefinitionData, but no members. Then,
2511 // importDefinition is called from LLDB, which tries to get the members, so
2512 // when we get here, the class already has the DefinitionData set, so we
2513 // must unset the CompleteDefinition here to be able to complete again the
2514 // definition.
2515 To->setCompleteDefinition(false);
2516 To->completeDefinition();
2517 };
2518
2519 if (To->getDefinition() || To->isBeingDefined()) {
2520 if (Kind == IDK_Everything ||
2521 // In case of lambdas, the class already has a definition ptr set, but
2522 // the contained decls are not imported yet. Also, isBeingDefined was
2523 // set in CXXRecordDecl::CreateLambda. We must import the contained
2524 // decls here and finish the definition.
2525 (To->isLambda() && shouldForceImportDeclContext(IDK: Kind))) {
2526 if (To->isLambda()) {
2527 auto *FromCXXRD = cast<CXXRecordDecl>(Val: From);
2528 SmallVector<LambdaCapture, 8> ToCaptures;
2529 ToCaptures.reserve(N: FromCXXRD->capture_size());
2530 for (const auto &FromCapture : FromCXXRD->captures()) {
2531 if (auto ToCaptureOrErr = import(From: FromCapture))
2532 ToCaptures.push_back(Elt: *ToCaptureOrErr);
2533 else
2534 return ToCaptureOrErr.takeError();
2535 }
2536 cast<CXXRecordDecl>(Val: To)->setCaptures(Context&: Importer.getToContext(),
2537 Captures: ToCaptures);
2538 }
2539
2540 Error Result = ImportDeclContext(FromDC: From, /*ForceImport=*/true);
2541 // Finish the definition of the lambda, set isBeingDefined to false.
2542 if (To->isLambda())
2543 DefinitionCompleter();
2544 return Result;
2545 }
2546
2547 return Error::success();
2548 }
2549
2550 To->startDefinition();
2551 // Set the definition to complete even if it is really not complete during
2552 // import. Some AST constructs (expressions) require the record layout
2553 // to be calculated (see 'clang::computeDependence') at the time they are
2554 // constructed. Import of such AST node is possible during import of the
2555 // same record, there is no way to have a completely defined record (all
2556 // fields imported) at that time without multiple AST import passes.
2557 if (!Importer.isMinimalImport())
2558 To->setCompleteDefinition(true);
2559 // Complete the definition even if error is returned.
2560 // The RecordDecl may be already part of the AST so it is better to
2561 // have it in complete state even if something is wrong with it.
2562 llvm::scope_exit DefinitionCompleterScopeExit(DefinitionCompleter);
2563
2564 if (Error Err = setTypedefNameForAnonDecl(From, To, Importer))
2565 return Err;
2566
2567 // Add base classes.
2568 auto *ToCXX = dyn_cast<CXXRecordDecl>(Val: To);
2569 auto *FromCXX = dyn_cast<CXXRecordDecl>(Val: From);
2570 if (ToCXX && FromCXX && ToCXX->dataPtr() && FromCXX->dataPtr()) {
2571
2572 struct CXXRecordDecl::DefinitionData &ToData = ToCXX->data();
2573 struct CXXRecordDecl::DefinitionData &FromData = FromCXX->data();
2574
2575 #define FIELD(Name, Width, Merge) \
2576 ToData.Name = FromData.Name;
2577 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
2578
2579 // Copy over the data stored in RecordDeclBits
2580 ToCXX->setArgPassingRestrictions(FromCXX->getArgPassingRestrictions());
2581
2582 SmallVector<CXXBaseSpecifier *, 4> Bases;
2583 for (const auto &Base1 : FromCXX->bases()) {
2584 ExpectedType TyOrErr = import(From: Base1.getType());
2585 if (!TyOrErr)
2586 return TyOrErr.takeError();
2587
2588 SourceLocation EllipsisLoc;
2589 if (Base1.isPackExpansion()) {
2590 if (ExpectedSLoc LocOrErr = import(From: Base1.getEllipsisLoc()))
2591 EllipsisLoc = *LocOrErr;
2592 else
2593 return LocOrErr.takeError();
2594 }
2595
2596 // Ensure that we have a definition for the base.
2597 if (Error Err =
2598 ImportDefinitionIfNeeded(FromD: Base1.getType()->getAsCXXRecordDecl()))
2599 return Err;
2600
2601 auto RangeOrErr = import(From: Base1.getSourceRange());
2602 if (!RangeOrErr)
2603 return RangeOrErr.takeError();
2604
2605 auto TSIOrErr = import(From: Base1.getTypeSourceInfo());
2606 if (!TSIOrErr)
2607 return TSIOrErr.takeError();
2608
2609 Bases.push_back(
2610 Elt: new (Importer.getToContext()) CXXBaseSpecifier(
2611 *RangeOrErr,
2612 Base1.isVirtual(),
2613 Base1.isBaseOfClass(),
2614 Base1.getAccessSpecifierAsWritten(),
2615 *TSIOrErr,
2616 EllipsisLoc));
2617 }
2618 if (!Bases.empty())
2619 ToCXX->setBases(Bases: Bases.data(), NumBases: Bases.size());
2620 }
2621
2622 if (shouldForceImportDeclContext(IDK: Kind)) {
2623 if (Error Err = ImportDeclContext(FromDC: From, /*ForceImport=*/true))
2624 return Err;
2625 }
2626
2627 return Error::success();
2628}
2629
2630Error ASTNodeImporter::ImportInitializer(VarDecl *From, VarDecl *To) {
2631 if (To->getAnyInitializer())
2632 return Error::success();
2633
2634 Expr *FromInit = From->getInit();
2635 if (!FromInit)
2636 return Error::success();
2637
2638 ExpectedExpr ToInitOrErr = import(From: FromInit);
2639 if (!ToInitOrErr)
2640 return ToInitOrErr.takeError();
2641
2642 To->setInit(*ToInitOrErr);
2643 if (EvaluatedStmt *FromEval = From->getEvaluatedStmt()) {
2644 EvaluatedStmt *ToEval = To->ensureEvaluatedStmt();
2645 ToEval->HasConstantInitialization = FromEval->HasConstantInitialization;
2646 ToEval->HasConstantDestruction = FromEval->HasConstantDestruction;
2647 // FIXME: Also import the initializer value.
2648 }
2649
2650 // FIXME: Other bits to merge?
2651 return Error::success();
2652}
2653
2654Error ASTNodeImporter::ImportDefinition(
2655 EnumDecl *From, EnumDecl *To, ImportDefinitionKind Kind) {
2656 if (To->getDefinition() || To->isBeingDefined()) {
2657 if (Kind == IDK_Everything)
2658 return ImportDeclContext(FromDC: From, /*ForceImport=*/true);
2659 return Error::success();
2660 }
2661
2662 To->startDefinition();
2663
2664 if (Error Err = setTypedefNameForAnonDecl(From, To, Importer))
2665 return Err;
2666
2667 ExpectedType ToTypeOrErr =
2668 import(From: QualType(Importer.getFromContext().getCanonicalTagType(TD: From)));
2669 if (!ToTypeOrErr)
2670 return ToTypeOrErr.takeError();
2671
2672 ExpectedType ToPromotionTypeOrErr = import(From: From->getPromotionType());
2673 if (!ToPromotionTypeOrErr)
2674 return ToPromotionTypeOrErr.takeError();
2675
2676 if (shouldForceImportDeclContext(IDK: Kind))
2677 if (Error Err = ImportDeclContext(FromDC: From, /*ForceImport=*/true))
2678 return Err;
2679
2680 // FIXME: we might need to merge the number of positive or negative bits
2681 // if the enumerator lists don't match.
2682 To->completeDefinition(NewType: *ToTypeOrErr, PromotionType: *ToPromotionTypeOrErr,
2683 NumPositiveBits: From->getNumPositiveBits(),
2684 NumNegativeBits: From->getNumNegativeBits());
2685 return Error::success();
2686}
2687
2688Error ASTNodeImporter::ImportTemplateArguments(
2689 ArrayRef<TemplateArgument> FromArgs,
2690 SmallVectorImpl<TemplateArgument> &ToArgs) {
2691 for (const auto &Arg : FromArgs) {
2692 if (auto ToOrErr = import(From: Arg))
2693 ToArgs.push_back(Elt: *ToOrErr);
2694 else
2695 return ToOrErr.takeError();
2696 }
2697
2698 return Error::success();
2699}
2700
2701// FIXME: Do not forget to remove this and use only 'import'.
2702Expected<TemplateArgument>
2703ASTNodeImporter::ImportTemplateArgument(const TemplateArgument &From) {
2704 return import(From);
2705}
2706
2707template <typename InContainerTy>
2708Error ASTNodeImporter::ImportTemplateArgumentListInfo(
2709 const InContainerTy &Container, TemplateArgumentListInfo &ToTAInfo) {
2710 for (const auto &FromLoc : Container) {
2711 if (auto ToLocOrErr = import(FromLoc))
2712 ToTAInfo.addArgument(Loc: *ToLocOrErr);
2713 else
2714 return ToLocOrErr.takeError();
2715 }
2716 return Error::success();
2717}
2718
2719static StructuralEquivalenceKind
2720getStructuralEquivalenceKind(const ASTImporter &Importer) {
2721 return Importer.isMinimalImport() ? StructuralEquivalenceKind::Minimal
2722 : StructuralEquivalenceKind::Default;
2723}
2724
2725bool ASTNodeImporter::IsStructuralMatch(Decl *From, Decl *To, bool Complain,
2726 bool IgnoreTemplateParmDepth) {
2727 // Eliminate a potential failure point where we attempt to re-import
2728 // something we're trying to import while completing ToRecord.
2729 Decl *ToOrigin = Importer.GetOriginalDecl(To);
2730 if (ToOrigin) {
2731 To = ToOrigin;
2732 }
2733
2734 StructuralEquivalenceContext Ctx(
2735 Importer.getToContext().getLangOpts(), Importer.getFromContext(),
2736 Importer.getToContext(), Importer.getNonEquivalentDecls(),
2737 getStructuralEquivalenceKind(Importer),
2738 /*StrictTypeSpelling=*/false, Complain, /*ErrorOnTagTypeMismatch=*/false,
2739 IgnoreTemplateParmDepth);
2740 return Ctx.IsEquivalent(D1: From, D2: To);
2741}
2742
2743ExpectedDecl ASTNodeImporter::VisitDecl(Decl *D) {
2744 Importer.FromDiag(Loc: D->getLocation(), DiagID: diag::err_unsupported_ast_node)
2745 << D->getDeclKindName();
2746 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
2747}
2748
2749ExpectedDecl ASTNodeImporter::VisitImportDecl(ImportDecl *D) {
2750 Importer.FromDiag(Loc: D->getLocation(), DiagID: diag::err_unsupported_ast_node)
2751 << D->getDeclKindName();
2752 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
2753}
2754
2755ExpectedDecl ASTNodeImporter::VisitEmptyDecl(EmptyDecl *D) {
2756 // Import the context of this declaration.
2757 DeclContext *DC, *LexicalDC;
2758 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
2759 return std::move(Err);
2760
2761 // Import the location of this declaration.
2762 ExpectedSLoc LocOrErr = import(From: D->getLocation());
2763 if (!LocOrErr)
2764 return LocOrErr.takeError();
2765
2766 EmptyDecl *ToD;
2767 if (GetImportedOrCreateDecl(ToD, FromD: D, args&: Importer.getToContext(), args&: DC, args&: *LocOrErr))
2768 return ToD;
2769
2770 ToD->setLexicalDeclContext(LexicalDC);
2771 LexicalDC->addDeclInternal(D: ToD);
2772 return ToD;
2773}
2774
2775ExpectedDecl ASTNodeImporter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
2776 TranslationUnitDecl *ToD =
2777 Importer.getToContext().getTranslationUnitDecl();
2778
2779 Importer.MapImported(From: D, To: ToD);
2780
2781 return ToD;
2782}
2783
2784ExpectedDecl ASTNodeImporter::VisitBindingDecl(BindingDecl *D) {
2785 DeclContext *DC, *LexicalDC;
2786 DeclarationName Name;
2787 SourceLocation Loc;
2788 NamedDecl *ToND;
2789 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD&: ToND, Loc))
2790 return std::move(Err);
2791 if (ToND)
2792 return ToND;
2793
2794 BindingDecl *ToD;
2795 if (GetImportedOrCreateDecl(ToD, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc,
2796 args: Name.getAsIdentifierInfo(), args: D->getType()))
2797 return ToD;
2798
2799 Error Err = Error::success();
2800 QualType ToType = importChecked(Err, From: D->getType());
2801 Expr *ToBinding = importChecked(Err, From: D->getBinding());
2802 ValueDecl *ToDecomposedDecl = importChecked(Err, From: D->getDecomposedDecl());
2803 if (Err)
2804 return std::move(Err);
2805
2806 ToD->setBinding(DeclaredType: ToType, Binding: ToBinding);
2807 ToD->setDecomposedDecl(ToDecomposedDecl);
2808 addDeclToContexts(FromD: D, ToD);
2809
2810 return ToD;
2811}
2812
2813ExpectedDecl ASTNodeImporter::VisitAccessSpecDecl(AccessSpecDecl *D) {
2814 ExpectedSLoc LocOrErr = import(From: D->getLocation());
2815 if (!LocOrErr)
2816 return LocOrErr.takeError();
2817 auto ColonLocOrErr = import(From: D->getColonLoc());
2818 if (!ColonLocOrErr)
2819 return ColonLocOrErr.takeError();
2820
2821 // Import the context of this declaration.
2822 auto DCOrErr = Importer.ImportContext(FromDC: D->getDeclContext());
2823 if (!DCOrErr)
2824 return DCOrErr.takeError();
2825 DeclContext *DC = *DCOrErr;
2826
2827 AccessSpecDecl *ToD;
2828 if (GetImportedOrCreateDecl(ToD, FromD: D, args&: Importer.getToContext(), args: D->getAccess(),
2829 args&: DC, args&: *LocOrErr, args&: *ColonLocOrErr))
2830 return ToD;
2831
2832 // Lexical DeclContext and Semantic DeclContext
2833 // is always the same for the accessSpec.
2834 ToD->setLexicalDeclContext(DC);
2835 DC->addDeclInternal(D: ToD);
2836
2837 return ToD;
2838}
2839
2840ExpectedDecl ASTNodeImporter::VisitStaticAssertDecl(StaticAssertDecl *D) {
2841 auto DCOrErr = Importer.ImportContext(FromDC: D->getDeclContext());
2842 if (!DCOrErr)
2843 return DCOrErr.takeError();
2844 DeclContext *DC = *DCOrErr;
2845 DeclContext *LexicalDC = DC;
2846
2847 Error Err = Error::success();
2848 auto ToLocation = importChecked(Err, From: D->getLocation());
2849 auto ToRParenLoc = importChecked(Err, From: D->getRParenLoc());
2850 auto ToAssertExpr = importChecked(Err, From: D->getAssertExpr());
2851 auto ToMessage = importChecked(Err, From: D->getMessage());
2852 if (Err)
2853 return std::move(Err);
2854
2855 StaticAssertDecl *ToD;
2856 if (GetImportedOrCreateDecl(
2857 ToD, FromD: D, args&: Importer.getToContext(), args&: DC, args&: ToLocation, args&: ToAssertExpr, args&: ToMessage,
2858 args&: ToRParenLoc, args: D->isFailed()))
2859 return ToD;
2860
2861 ToD->setLexicalDeclContext(LexicalDC);
2862 LexicalDC->addDeclInternal(D: ToD);
2863 return ToD;
2864}
2865
2866ExpectedDecl ASTNodeImporter::VisitNamespaceDecl(NamespaceDecl *D) {
2867 // Import the major distinguishing characteristics of this namespace.
2868 DeclContext *DC, *LexicalDC;
2869 DeclarationName Name;
2870 SourceLocation Loc;
2871 NamedDecl *ToD;
2872 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
2873 return std::move(Err);
2874 if (ToD)
2875 return ToD;
2876
2877 NamespaceDecl *MergeWithNamespace = nullptr;
2878 if (!Name) {
2879 // This is an anonymous namespace. Adopt an existing anonymous
2880 // namespace if we can.
2881 DeclContext *EnclosingDC = DC->getEnclosingNamespaceContext();
2882 if (auto *TU = dyn_cast<TranslationUnitDecl>(Val: EnclosingDC))
2883 MergeWithNamespace = TU->getAnonymousNamespace();
2884 else
2885 MergeWithNamespace =
2886 cast<NamespaceDecl>(Val: EnclosingDC)->getAnonymousNamespace();
2887 } else {
2888 SmallVector<NamedDecl *, 4> ConflictingDecls;
2889 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
2890 for (auto *FoundDecl : FoundDecls) {
2891 if (!FoundDecl->isInIdentifierNamespace(NS: Decl::IDNS_Namespace))
2892 continue;
2893
2894 if (auto *FoundNS = dyn_cast<NamespaceDecl>(Val: FoundDecl)) {
2895 MergeWithNamespace = FoundNS;
2896 ConflictingDecls.clear();
2897 break;
2898 }
2899
2900 ConflictingDecls.push_back(Elt: FoundDecl);
2901 }
2902
2903 if (!ConflictingDecls.empty()) {
2904 ExpectedName NameOrErr = Importer.HandleNameConflict(
2905 Name, DC, IDNS: Decl::IDNS_Namespace, Decls: ConflictingDecls.data(),
2906 NumDecls: ConflictingDecls.size());
2907 if (NameOrErr)
2908 Name = NameOrErr.get();
2909 else
2910 return NameOrErr.takeError();
2911 }
2912 }
2913
2914 ExpectedSLoc BeginLocOrErr = import(From: D->getBeginLoc());
2915 if (!BeginLocOrErr)
2916 return BeginLocOrErr.takeError();
2917 ExpectedSLoc RBraceLocOrErr = import(From: D->getRBraceLoc());
2918 if (!RBraceLocOrErr)
2919 return RBraceLocOrErr.takeError();
2920
2921 // Create the "to" namespace, if needed.
2922 NamespaceDecl *ToNamespace = MergeWithNamespace;
2923 if (!ToNamespace) {
2924 if (GetImportedOrCreateDecl(ToD&: ToNamespace, FromD: D, args&: Importer.getToContext(), args&: DC,
2925 args: D->isInline(), args&: *BeginLocOrErr, args&: Loc,
2926 args: Name.getAsIdentifierInfo(),
2927 /*PrevDecl=*/args: nullptr, args: D->isNested()))
2928 return ToNamespace;
2929 ToNamespace->setRBraceLoc(*RBraceLocOrErr);
2930 ToNamespace->setLexicalDeclContext(LexicalDC);
2931 LexicalDC->addDeclInternal(D: ToNamespace);
2932
2933 // If this is an anonymous namespace, register it as the anonymous
2934 // namespace within its context.
2935 if (!Name) {
2936 if (auto *TU = dyn_cast<TranslationUnitDecl>(Val: DC))
2937 TU->setAnonymousNamespace(ToNamespace);
2938 else
2939 cast<NamespaceDecl>(Val: DC)->setAnonymousNamespace(ToNamespace);
2940 }
2941 }
2942 Importer.MapImported(From: D, To: ToNamespace);
2943
2944 if (Error Err = ImportDeclContext(FromDC: D))
2945 return std::move(Err);
2946
2947 return ToNamespace;
2948}
2949
2950ExpectedDecl ASTNodeImporter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
2951 // Import the major distinguishing characteristics of this namespace.
2952 DeclContext *DC, *LexicalDC;
2953 DeclarationName Name;
2954 SourceLocation Loc;
2955 NamedDecl *LookupD;
2956 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD&: LookupD, Loc))
2957 return std::move(Err);
2958 if (LookupD)
2959 return LookupD;
2960
2961 // NOTE: No conflict resolution is done for namespace aliases now.
2962
2963 Error Err = Error::success();
2964 auto ToNamespaceLoc = importChecked(Err, From: D->getNamespaceLoc());
2965 auto ToAliasLoc = importChecked(Err, From: D->getAliasLoc());
2966 auto ToQualifierLoc = importChecked(Err, From: D->getQualifierLoc());
2967 auto ToTargetNameLoc = importChecked(Err, From: D->getTargetNameLoc());
2968 auto ToNamespace = importChecked(Err, From: D->getNamespace());
2969 if (Err)
2970 return std::move(Err);
2971
2972 IdentifierInfo *ToIdentifier = Importer.Import(FromId: D->getIdentifier());
2973
2974 NamespaceAliasDecl *ToD;
2975 if (GetImportedOrCreateDecl(
2976 ToD, FromD: D, args&: Importer.getToContext(), args&: DC, args&: ToNamespaceLoc, args&: ToAliasLoc,
2977 args&: ToIdentifier, args&: ToQualifierLoc, args&: ToTargetNameLoc, args&: ToNamespace))
2978 return ToD;
2979
2980 ToD->setLexicalDeclContext(LexicalDC);
2981 LexicalDC->addDeclInternal(D: ToD);
2982
2983 return ToD;
2984}
2985
2986ExpectedDecl
2987ASTNodeImporter::VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias) {
2988 // Import the major distinguishing characteristics of this typedef.
2989 DeclarationName Name;
2990 SourceLocation Loc;
2991 NamedDecl *ToD;
2992 // Do not import the DeclContext, we will import it once the TypedefNameDecl
2993 // is created.
2994 if (Error Err = ImportDeclParts(D, Name, ToD, Loc))
2995 return std::move(Err);
2996 if (ToD)
2997 return ToD;
2998
2999 DeclContext *DC = cast_or_null<DeclContext>(
3000 Val: Importer.GetAlreadyImportedOrNull(FromD: cast<Decl>(Val: D->getDeclContext())));
3001 DeclContext *LexicalDC =
3002 cast_or_null<DeclContext>(Val: Importer.GetAlreadyImportedOrNull(
3003 FromD: cast<Decl>(Val: D->getLexicalDeclContext())));
3004
3005 // If this typedef is not in block scope, determine whether we've
3006 // seen a typedef with the same name (that we can merge with) or any
3007 // other entity by that name (which name lookup could conflict with).
3008 // Note: Repeated typedefs are not valid in C99:
3009 // 'typedef int T; typedef int T;' is invalid
3010 // We do not care about this now.
3011 if (DC && !DC->isFunctionOrMethod()) {
3012 SmallVector<NamedDecl *, 4> ConflictingDecls;
3013 unsigned IDNS = Decl::IDNS_Ordinary;
3014 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
3015 for (auto *FoundDecl : FoundDecls) {
3016 if (!FoundDecl->isInIdentifierNamespace(NS: IDNS))
3017 continue;
3018 if (auto *FoundTypedef = dyn_cast<TypedefNameDecl>(Val: FoundDecl)) {
3019 if (!hasSameVisibilityContextAndLinkage(Found: FoundTypedef, From: D))
3020 continue;
3021
3022 QualType FromUT = D->getUnderlyingType();
3023 QualType FoundUT = FoundTypedef->getUnderlyingType();
3024 if (Importer.IsStructurallyEquivalent(From: FromUT, To: FoundUT)) {
3025 // If the underlying declarations are unnamed records these can be
3026 // imported as different types. We should create a distinct typedef
3027 // node in this case.
3028 // If we found an existing underlying type with a record in a
3029 // different context (than the imported), this is already reason for
3030 // having distinct typedef nodes for these.
3031 // Again this can create situation like
3032 // 'typedef int T; typedef int T;' but this is hard to avoid without
3033 // a rename strategy at import.
3034 if (!FromUT.isNull() && !FoundUT.isNull()) {
3035 RecordDecl *FromR = FromUT->getAsRecordDecl();
3036 RecordDecl *FoundR = FoundUT->getAsRecordDecl();
3037 if (FromR && FoundR &&
3038 !hasSameVisibilityContextAndLinkage(Found: FoundR, From: FromR))
3039 continue;
3040 }
3041 // If the "From" context has a complete underlying type but we
3042 // already have a complete underlying type then return with that.
3043 if (!FromUT->isIncompleteType() && !FoundUT->isIncompleteType())
3044 return Importer.MapImported(From: D, To: FoundTypedef);
3045 // FIXME Handle redecl chain. When you do that make consistent changes
3046 // in ASTImporterLookupTable too.
3047 } else {
3048 ConflictingDecls.push_back(Elt: FoundDecl);
3049 }
3050 }
3051 }
3052
3053 if (!ConflictingDecls.empty()) {
3054 ExpectedName NameOrErr = Importer.HandleNameConflict(
3055 Name, DC, IDNS, Decls: ConflictingDecls.data(), NumDecls: ConflictingDecls.size());
3056 if (NameOrErr)
3057 Name = NameOrErr.get();
3058 else
3059 return NameOrErr.takeError();
3060 }
3061 }
3062
3063 Error Err = Error::success();
3064 auto ToUnderlyingType = importChecked(Err, From: D->getUnderlyingType());
3065 auto ToTypeSourceInfo = importChecked(Err, From: D->getTypeSourceInfo());
3066 auto ToBeginLoc = importChecked(Err, From: D->getBeginLoc());
3067 if (Err)
3068 return std::move(Err);
3069
3070 // Create the new typedef node.
3071 // FIXME: ToUnderlyingType is not used.
3072 (void)ToUnderlyingType;
3073 TypedefNameDecl *ToTypedef;
3074 if (IsAlias) {
3075 if (GetImportedOrCreateDecl<TypeAliasDecl>(
3076 ToD&: ToTypedef, FromD: D, args&: Importer.getToContext(), args&: DC, args&: ToBeginLoc, args&: Loc,
3077 args: Name.getAsIdentifierInfo(), args&: ToTypeSourceInfo))
3078 return ToTypedef;
3079 } else if (GetImportedOrCreateDecl<TypedefDecl>(
3080 ToD&: ToTypedef, FromD: D, args&: Importer.getToContext(), args&: DC, args&: ToBeginLoc, args&: Loc,
3081 args: Name.getAsIdentifierInfo(), args&: ToTypeSourceInfo))
3082 return ToTypedef;
3083
3084 // Import the DeclContext and set it to the Typedef.
3085 if ((Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC)))
3086 return std::move(Err);
3087 ToTypedef->setDeclContext(DC);
3088 ToTypedef->setLexicalDeclContext(LexicalDC);
3089 // Add to the lookupTable because we could not do that in MapImported.
3090 Importer.AddToLookupTable(ToD: ToTypedef);
3091
3092 ToTypedef->setAccess(D->getAccess());
3093
3094 // Templated declarations should not appear in DeclContext.
3095 TypeAliasDecl *FromAlias = IsAlias ? cast<TypeAliasDecl>(Val: D) : nullptr;
3096 if (!FromAlias || !FromAlias->getDescribedAliasTemplate())
3097 LexicalDC->addDeclInternal(D: ToTypedef);
3098
3099 return ToTypedef;
3100}
3101
3102ExpectedDecl ASTNodeImporter::VisitTypedefDecl(TypedefDecl *D) {
3103 return VisitTypedefNameDecl(D, /*IsAlias=*/false);
3104}
3105
3106ExpectedDecl ASTNodeImporter::VisitTypeAliasDecl(TypeAliasDecl *D) {
3107 return VisitTypedefNameDecl(D, /*IsAlias=*/true);
3108}
3109
3110ExpectedDecl
3111ASTNodeImporter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
3112 // Import the major distinguishing characteristics of this typedef.
3113 DeclContext *DC, *LexicalDC;
3114 DeclarationName Name;
3115 SourceLocation Loc;
3116 NamedDecl *FoundD;
3117 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD&: FoundD, Loc))
3118 return std::move(Err);
3119 if (FoundD)
3120 return FoundD;
3121
3122 // If this typedef is not in block scope, determine whether we've
3123 // seen a typedef with the same name (that we can merge with) or any
3124 // other entity by that name (which name lookup could conflict with).
3125 if (!DC->isFunctionOrMethod()) {
3126 SmallVector<NamedDecl *, 4> ConflictingDecls;
3127 unsigned IDNS = Decl::IDNS_Ordinary;
3128 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
3129 for (auto *FoundDecl : FoundDecls) {
3130 if (!FoundDecl->isInIdentifierNamespace(NS: IDNS))
3131 continue;
3132 if (auto *FoundAlias = dyn_cast<TypeAliasTemplateDecl>(Val: FoundDecl)) {
3133 if (IsStructuralMatch(From: D, To: FoundAlias))
3134 return Importer.MapImported(From: D, To: FoundAlias);
3135 ConflictingDecls.push_back(Elt: FoundDecl);
3136 }
3137 }
3138
3139 if (!ConflictingDecls.empty()) {
3140 ExpectedName NameOrErr = Importer.HandleNameConflict(
3141 Name, DC, IDNS, Decls: ConflictingDecls.data(), NumDecls: ConflictingDecls.size());
3142 if (NameOrErr)
3143 Name = NameOrErr.get();
3144 else
3145 return NameOrErr.takeError();
3146 }
3147 }
3148
3149 Error Err = Error::success();
3150 auto ToTemplateParameters = importChecked(Err, From: D->getTemplateParameters());
3151 auto ToTemplatedDecl = importChecked(Err, From: D->getTemplatedDecl());
3152 if (Err)
3153 return std::move(Err);
3154
3155 TypeAliasTemplateDecl *ToAlias;
3156 if (GetImportedOrCreateDecl(ToD&: ToAlias, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc,
3157 args&: Name, args&: ToTemplateParameters, args&: ToTemplatedDecl))
3158 return ToAlias;
3159
3160 ToTemplatedDecl->setDescribedAliasTemplate(ToAlias);
3161
3162 ToAlias->setAccess(D->getAccess());
3163 ToAlias->setLexicalDeclContext(LexicalDC);
3164 LexicalDC->addDeclInternal(D: ToAlias);
3165 if (DC != Importer.getToContext().getTranslationUnitDecl())
3166 updateLookupTableForTemplateParameters(Params&: *ToTemplateParameters);
3167 return ToAlias;
3168}
3169
3170ExpectedDecl ASTNodeImporter::VisitLabelDecl(LabelDecl *D) {
3171 // Import the major distinguishing characteristics of this label.
3172 DeclContext *DC, *LexicalDC;
3173 DeclarationName Name;
3174 SourceLocation Loc;
3175 NamedDecl *ToD;
3176 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3177 return std::move(Err);
3178 if (ToD)
3179 return ToD;
3180
3181 assert(LexicalDC->isFunctionOrMethod());
3182
3183 LabelDecl *ToLabel;
3184 if (D->isGnuLocal()) {
3185 ExpectedSLoc BeginLocOrErr = import(From: D->getBeginLoc());
3186 if (!BeginLocOrErr)
3187 return BeginLocOrErr.takeError();
3188 if (GetImportedOrCreateDecl(ToD&: ToLabel, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc,
3189 args: Name.getAsIdentifierInfo(), args&: *BeginLocOrErr))
3190 return ToLabel;
3191
3192 } else {
3193 if (GetImportedOrCreateDecl(ToD&: ToLabel, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc,
3194 args: Name.getAsIdentifierInfo()))
3195 return ToLabel;
3196
3197 }
3198
3199 Expected<LabelStmt *> ToStmtOrErr = import(From: D->getStmt());
3200 if (!ToStmtOrErr)
3201 return ToStmtOrErr.takeError();
3202
3203 ToLabel->setStmt(*ToStmtOrErr);
3204 ToLabel->setLexicalDeclContext(LexicalDC);
3205 LexicalDC->addDeclInternal(D: ToLabel);
3206 return ToLabel;
3207}
3208
3209ExpectedDecl ASTNodeImporter::VisitEnumDecl(EnumDecl *D) {
3210 // Import the major distinguishing characteristics of this enum.
3211 DeclContext *DC, *LexicalDC;
3212 DeclarationName Name;
3213 SourceLocation Loc;
3214 NamedDecl *ToD;
3215 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3216 return std::move(Err);
3217 if (ToD)
3218 return ToD;
3219
3220 // Figure out what enum name we're looking for.
3221 unsigned IDNS = Decl::IDNS_Tag;
3222 DeclarationName SearchName = Name;
3223 if (!SearchName && D->getTypedefNameForAnonDecl()) {
3224 if (Error Err = importInto(
3225 To&: SearchName, From: D->getTypedefNameForAnonDecl()->getDeclName()))
3226 return std::move(Err);
3227 IDNS = Decl::IDNS_Ordinary;
3228 } else if (Importer.getToContext().getLangOpts().CPlusPlus)
3229 IDNS |= Decl::IDNS_Ordinary;
3230
3231 // We may already have an enum of the same name; try to find and match it.
3232 EnumDecl *PrevDecl = nullptr;
3233 if (!DC->isFunctionOrMethod()) {
3234 SmallVector<NamedDecl *, 4> ConflictingDecls;
3235 auto FoundDecls =
3236 Importer.findDeclsInToCtx(DC, Name: SearchName);
3237 for (auto *FoundDecl : FoundDecls) {
3238 if (!FoundDecl->isInIdentifierNamespace(NS: IDNS))
3239 continue;
3240
3241 if (auto *Typedef = dyn_cast<TypedefNameDecl>(Val: FoundDecl)) {
3242 if (const auto *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
3243 FoundDecl = Tag->getDecl();
3244 }
3245
3246 if (auto *FoundEnum = dyn_cast<EnumDecl>(Val: FoundDecl)) {
3247 if (!hasSameVisibilityContextAndLinkage(Found: FoundEnum, From: D))
3248 continue;
3249 if (IsStructuralMatch(From: D, To: FoundEnum, Complain: !SearchName.isEmpty())) {
3250 EnumDecl *FoundDef = FoundEnum->getDefinition();
3251 if (D->isThisDeclarationADefinition() && FoundDef)
3252 return Importer.MapImported(From: D, To: FoundDef);
3253 PrevDecl = FoundEnum->getMostRecentDecl();
3254 break;
3255 }
3256 ConflictingDecls.push_back(Elt: FoundDecl);
3257 }
3258 }
3259
3260 // In case of unnamed enums, we try to find an existing similar one, if none
3261 // was found, perform the import always.
3262 // Structural in-equivalence is not detected in this way here, but it may
3263 // be found when the parent decl is imported (if the enum is part of a
3264 // class). To make this totally exact a more difficult solution is needed.
3265 if (SearchName && !ConflictingDecls.empty()) {
3266 ExpectedName NameOrErr = Importer.HandleNameConflict(
3267 Name: SearchName, DC, IDNS, Decls: ConflictingDecls.data(),
3268 NumDecls: ConflictingDecls.size());
3269 if (NameOrErr)
3270 Name = NameOrErr.get();
3271 else
3272 return NameOrErr.takeError();
3273 }
3274 }
3275
3276 Error Err = Error::success();
3277 auto ToBeginLoc = importChecked(Err, From: D->getBeginLoc());
3278 auto ToQualifierLoc = importChecked(Err, From: D->getQualifierLoc());
3279 auto ToIntegerType = importChecked(Err, From: D->getIntegerType());
3280 auto ToBraceRange = importChecked(Err, From: D->getBraceRange());
3281 if (Err)
3282 return std::move(Err);
3283
3284 // Create the enum declaration.
3285 EnumDecl *D2;
3286 if (GetImportedOrCreateDecl(
3287 ToD&: D2, FromD: D, args&: Importer.getToContext(), args&: DC, args&: ToBeginLoc,
3288 args&: Loc, args: Name.getAsIdentifierInfo(), args&: PrevDecl, args: D->isScoped(),
3289 args: D->isScopedUsingClassTag(), args: D->isFixed()))
3290 return D2;
3291
3292 D2->setQualifierInfo(ToQualifierLoc);
3293 D2->setIntegerType(ToIntegerType);
3294 D2->setBraceRange(ToBraceRange);
3295 D2->setAccess(D->getAccess());
3296 D2->setLexicalDeclContext(LexicalDC);
3297 addDeclToContexts(FromD: D, ToD: D2);
3298
3299 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) {
3300 TemplateSpecializationKind SK = MemberInfo->getTemplateSpecializationKind();
3301 EnumDecl *FromInst = D->getInstantiatedFromMemberEnum();
3302 if (Expected<EnumDecl *> ToInstOrErr = import(From: FromInst))
3303 D2->setInstantiationOfMemberEnum(ED: *ToInstOrErr, TSK: SK);
3304 else
3305 return ToInstOrErr.takeError();
3306 if (ExpectedSLoc POIOrErr = import(From: MemberInfo->getPointOfInstantiation()))
3307 D2->getMemberSpecializationInfo()->setPointOfInstantiation(*POIOrErr);
3308 else
3309 return POIOrErr.takeError();
3310 }
3311
3312 // Import the definition
3313 if (D->isCompleteDefinition())
3314 if (Error Err = ImportDefinition(From: D, To: D2))
3315 return std::move(Err);
3316
3317 return D2;
3318}
3319
3320ExpectedDecl ASTNodeImporter::VisitRecordDecl(RecordDecl *D) {
3321 bool IsFriendTemplate = false;
3322 if (auto *DCXX = dyn_cast<CXXRecordDecl>(Val: D)) {
3323 IsFriendTemplate =
3324 DCXX->getDescribedClassTemplate() &&
3325 DCXX->getDescribedClassTemplate()->getFriendObjectKind() !=
3326 Decl::FOK_None;
3327 }
3328
3329 // Import the major distinguishing characteristics of this record.
3330 DeclContext *DC = nullptr, *LexicalDC = nullptr;
3331 DeclarationName Name;
3332 SourceLocation Loc;
3333 NamedDecl *ToD = nullptr;
3334 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3335 return std::move(Err);
3336 if (ToD)
3337 return ToD;
3338
3339 // Figure out what structure name we're looking for.
3340 unsigned IDNS = Decl::IDNS_Tag;
3341 DeclarationName SearchName = Name;
3342 if (!SearchName && D->getTypedefNameForAnonDecl()) {
3343 if (Error Err = importInto(
3344 To&: SearchName, From: D->getTypedefNameForAnonDecl()->getDeclName()))
3345 return std::move(Err);
3346 IDNS = Decl::IDNS_Ordinary;
3347 } else if (Importer.getToContext().getLangOpts().CPlusPlus)
3348 IDNS |= Decl::IDNS_Ordinary | Decl::IDNS_TagFriend;
3349
3350 bool IsDependentContext = DC != LexicalDC ? LexicalDC->isDependentContext()
3351 : DC->isDependentContext();
3352 bool DependentFriend = IsFriendTemplate && IsDependentContext;
3353
3354 // We may already have a record of the same name; try to find and match it.
3355 RecordDecl *PrevDecl = nullptr;
3356 if (!DependentFriend && !DC->isFunctionOrMethod() && !D->isLambda()) {
3357 SmallVector<NamedDecl *, 4> ConflictingDecls;
3358 auto FoundDecls =
3359 Importer.findDeclsInToCtx(DC, Name: SearchName);
3360 if (!FoundDecls.empty()) {
3361 // We're going to have to compare D against potentially conflicting Decls,
3362 // so complete it.
3363 if (D->hasExternalLexicalStorage() && !D->isCompleteDefinition())
3364 D->getASTContext().getExternalSource()->CompleteType(Tag: D);
3365 }
3366
3367 for (auto *FoundDecl : FoundDecls) {
3368 if (!FoundDecl->isInIdentifierNamespace(NS: IDNS))
3369 continue;
3370
3371 Decl *Found = FoundDecl;
3372 if (auto *Typedef = dyn_cast<TypedefNameDecl>(Val: Found)) {
3373 if (const auto *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
3374 Found = Tag->getDecl();
3375 }
3376
3377 if (auto *FoundRecord = dyn_cast<RecordDecl>(Val: Found)) {
3378 // Do not emit false positive diagnostic in case of unnamed
3379 // struct/union and in case of anonymous structs. Would be false
3380 // because there may be several anonymous/unnamed structs in a class.
3381 // E.g. these are both valid:
3382 // struct A { // unnamed structs
3383 // struct { struct A *next; } entry0;
3384 // struct { struct A *next; } entry1;
3385 // };
3386 // struct X { struct { int a; }; struct { int b; }; }; // anon structs
3387 if (!SearchName)
3388 if (!IsStructuralMatch(From: D, To: FoundRecord, Complain: false))
3389 continue;
3390
3391 if (!hasSameVisibilityContextAndLinkage(Found: FoundRecord, From: D))
3392 continue;
3393
3394 if (IsStructuralMatch(From: D, To: FoundRecord)) {
3395 RecordDecl *FoundDef = FoundRecord->getDefinition();
3396 if (D->isThisDeclarationADefinition() && FoundDef) {
3397 // FIXME: Structural equivalence check should check for same
3398 // user-defined methods.
3399 Importer.MapImported(From: D, To: FoundDef);
3400 if (const auto *DCXX = dyn_cast<CXXRecordDecl>(Val: D)) {
3401 auto *FoundCXX = dyn_cast<CXXRecordDecl>(Val: FoundDef);
3402 assert(FoundCXX && "Record type mismatch");
3403
3404 if (!Importer.isMinimalImport())
3405 // FoundDef may not have every implicit method that D has
3406 // because implicit methods are created only if they are used.
3407 if (Error Err = ImportImplicitMethods(From: DCXX, To: FoundCXX))
3408 return std::move(Err);
3409 }
3410 // FIXME: We can return FoundDef here.
3411 }
3412 PrevDecl = FoundRecord->getMostRecentDecl();
3413 break;
3414 }
3415 ConflictingDecls.push_back(Elt: FoundDecl);
3416 } // kind is RecordDecl
3417 } // for
3418
3419 if (!ConflictingDecls.empty() && SearchName) {
3420 ExpectedName NameOrErr = Importer.HandleNameConflict(
3421 Name: SearchName, DC, IDNS, Decls: ConflictingDecls.data(),
3422 NumDecls: ConflictingDecls.size());
3423 if (NameOrErr)
3424 Name = NameOrErr.get();
3425 else
3426 return NameOrErr.takeError();
3427 }
3428 }
3429
3430 ExpectedSLoc BeginLocOrErr = import(From: D->getBeginLoc());
3431 if (!BeginLocOrErr)
3432 return BeginLocOrErr.takeError();
3433
3434 // Create the record declaration.
3435 RecordDecl *D2 = nullptr;
3436 CXXRecordDecl *D2CXX = nullptr;
3437 if (auto *DCXX = dyn_cast<CXXRecordDecl>(Val: D)) {
3438 if (DCXX->isLambda()) {
3439 auto TInfoOrErr = import(From: DCXX->getLambdaTypeInfo());
3440 if (!TInfoOrErr)
3441 return TInfoOrErr.takeError();
3442 if (GetImportedOrCreateSpecialDecl(
3443 ToD&: D2CXX, CreateFun: CXXRecordDecl::CreateLambda, FromD: D, args&: Importer.getToContext(),
3444 args&: DC, args&: *TInfoOrErr, args&: Loc, args: DCXX->getLambdaDependencyKind(),
3445 args: DCXX->isGenericLambda(), args: DCXX->getLambdaCaptureDefault()))
3446 return D2CXX;
3447 CXXRecordDecl::LambdaNumbering Numbering = DCXX->getLambdaNumbering();
3448 ExpectedDecl CDeclOrErr = import(From: Numbering.ContextDecl);
3449 if (!CDeclOrErr)
3450 return CDeclOrErr.takeError();
3451 Numbering.ContextDecl = *CDeclOrErr;
3452 D2CXX->setLambdaNumbering(Numbering);
3453 } else {
3454 if (GetImportedOrCreateDecl(ToD&: D2CXX, FromD: D, args&: Importer.getToContext(),
3455 args: D->getTagKind(), args&: DC, args&: *BeginLocOrErr, args&: Loc,
3456 args: Name.getAsIdentifierInfo(),
3457 args: cast_or_null<CXXRecordDecl>(Val: PrevDecl)))
3458 return D2CXX;
3459 }
3460
3461 D2 = D2CXX;
3462 D2->setAccess(D->getAccess());
3463 D2->setLexicalDeclContext(LexicalDC);
3464 addDeclToContexts(FromD: D, ToD: D2);
3465
3466 if (ClassTemplateDecl *FromDescribed =
3467 DCXX->getDescribedClassTemplate()) {
3468 ClassTemplateDecl *ToDescribed;
3469 if (Error Err = importInto(To&: ToDescribed, From: FromDescribed))
3470 return std::move(Err);
3471 D2CXX->setDescribedClassTemplate(ToDescribed);
3472 } else if (MemberSpecializationInfo *MemberInfo =
3473 DCXX->getMemberSpecializationInfo()) {
3474 TemplateSpecializationKind SK =
3475 MemberInfo->getTemplateSpecializationKind();
3476 CXXRecordDecl *FromInst = DCXX->getInstantiatedFromMemberClass();
3477
3478 if (Expected<CXXRecordDecl *> ToInstOrErr = import(From: FromInst))
3479 D2CXX->setInstantiationOfMemberClass(RD: *ToInstOrErr, TSK: SK);
3480 else
3481 return ToInstOrErr.takeError();
3482
3483 if (ExpectedSLoc POIOrErr =
3484 import(From: MemberInfo->getPointOfInstantiation()))
3485 D2CXX->getMemberSpecializationInfo()->setPointOfInstantiation(
3486 *POIOrErr);
3487 else
3488 return POIOrErr.takeError();
3489 }
3490
3491 } else {
3492 if (GetImportedOrCreateDecl(ToD&: D2, FromD: D, args&: Importer.getToContext(),
3493 args: D->getTagKind(), args&: DC, args&: *BeginLocOrErr, args&: Loc,
3494 args: Name.getAsIdentifierInfo(), args&: PrevDecl))
3495 return D2;
3496 D2->setLexicalDeclContext(LexicalDC);
3497 addDeclToContexts(FromD: D, ToD: D2);
3498 }
3499
3500 if (auto BraceRangeOrErr = import(From: D->getBraceRange()))
3501 D2->setBraceRange(*BraceRangeOrErr);
3502 else
3503 return BraceRangeOrErr.takeError();
3504 if (auto QualifierLocOrErr = import(From: D->getQualifierLoc()))
3505 D2->setQualifierInfo(*QualifierLocOrErr);
3506 else
3507 return QualifierLocOrErr.takeError();
3508
3509 if (D->isAnonymousStructOrUnion())
3510 D2->setAnonymousStructOrUnion(true);
3511
3512 if (D->isCompleteDefinition())
3513 if (Error Err = ImportDefinition(From: D, To: D2, Kind: IDK_Default))
3514 return std::move(Err);
3515
3516 return D2;
3517}
3518
3519ExpectedDecl ASTNodeImporter::VisitEnumConstantDecl(EnumConstantDecl *D) {
3520 // Import the major distinguishing characteristics of this enumerator.
3521 DeclContext *DC, *LexicalDC;
3522 DeclarationName Name;
3523 SourceLocation Loc;
3524 NamedDecl *ToD;
3525 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3526 return std::move(Err);
3527 if (ToD)
3528 return ToD;
3529
3530 // Determine whether there are any other declarations with the same name and
3531 // in the same context.
3532 if (!LexicalDC->isFunctionOrMethod()) {
3533 SmallVector<NamedDecl *, 4> ConflictingDecls;
3534 unsigned IDNS = Decl::IDNS_Ordinary;
3535 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
3536 for (auto *FoundDecl : FoundDecls) {
3537 if (!FoundDecl->isInIdentifierNamespace(NS: IDNS))
3538 continue;
3539
3540 if (auto *FoundEnumConstant = dyn_cast<EnumConstantDecl>(Val: FoundDecl)) {
3541 if (IsStructuralMatch(From: D, To: FoundEnumConstant))
3542 return Importer.MapImported(From: D, To: FoundEnumConstant);
3543 ConflictingDecls.push_back(Elt: FoundDecl);
3544 }
3545 }
3546
3547 if (!ConflictingDecls.empty()) {
3548 ExpectedName NameOrErr = Importer.HandleNameConflict(
3549 Name, DC, IDNS, Decls: ConflictingDecls.data(), NumDecls: ConflictingDecls.size());
3550 if (NameOrErr)
3551 Name = NameOrErr.get();
3552 else
3553 return NameOrErr.takeError();
3554 }
3555 }
3556
3557 ExpectedType TypeOrErr = import(From: D->getType());
3558 if (!TypeOrErr)
3559 return TypeOrErr.takeError();
3560
3561 ExpectedExpr InitOrErr = import(From: D->getInitExpr());
3562 if (!InitOrErr)
3563 return InitOrErr.takeError();
3564
3565 EnumConstantDecl *ToEnumerator;
3566 if (GetImportedOrCreateDecl(
3567 ToD&: ToEnumerator, FromD: D, args&: Importer.getToContext(), args: cast<EnumDecl>(Val: DC), args&: Loc,
3568 args: Name.getAsIdentifierInfo(), args&: *TypeOrErr, args&: *InitOrErr, args: D->getInitVal()))
3569 return ToEnumerator;
3570
3571 ToEnumerator->setAccess(D->getAccess());
3572 ToEnumerator->setLexicalDeclContext(LexicalDC);
3573 LexicalDC->addDeclInternal(D: ToEnumerator);
3574 return ToEnumerator;
3575}
3576
3577template <typename DeclTy>
3578Error ASTNodeImporter::ImportTemplateParameterLists(const DeclTy *FromD,
3579 DeclTy *ToD) {
3580 unsigned int Num = FromD->getNumTemplateParameterLists();
3581 if (Num == 0)
3582 return Error::success();
3583 SmallVector<TemplateParameterList *, 2> ToTPLists(Num);
3584 for (unsigned int I = 0; I < Num; ++I)
3585 if (Expected<TemplateParameterList *> ToTPListOrErr =
3586 import(FromD->getTemplateParameterList(I)))
3587 ToTPLists[I] = *ToTPListOrErr;
3588 else
3589 return ToTPListOrErr.takeError();
3590 ToD->setTemplateParameterListsInfo(Importer.ToContext, ToTPLists);
3591 return Error::success();
3592}
3593
3594Error ASTNodeImporter::ImportTemplateInformation(
3595 FunctionDecl *FromFD, FunctionDecl *ToFD) {
3596 switch (FromFD->getTemplatedKind()) {
3597 case FunctionDecl::TK_NonTemplate:
3598 case FunctionDecl::TK_FunctionTemplate:
3599 return Error::success();
3600
3601 case FunctionDecl::TK_DependentNonTemplate:
3602 if (Expected<FunctionDecl *> InstFDOrErr =
3603 import(From: FromFD->getInstantiatedFromDecl()))
3604 ToFD->setInstantiatedFromDecl(*InstFDOrErr);
3605 return Error::success();
3606 case FunctionDecl::TK_MemberSpecialization: {
3607 TemplateSpecializationKind TSK = FromFD->getTemplateSpecializationKind();
3608
3609 if (Expected<FunctionDecl *> InstFDOrErr =
3610 import(From: FromFD->getInstantiatedFromMemberFunction()))
3611 ToFD->setInstantiationOfMemberFunction(FD: *InstFDOrErr, TSK);
3612 else
3613 return InstFDOrErr.takeError();
3614
3615 if (ExpectedSLoc POIOrErr = import(
3616 From: FromFD->getMemberSpecializationInfo()->getPointOfInstantiation()))
3617 ToFD->getMemberSpecializationInfo()->setPointOfInstantiation(*POIOrErr);
3618 else
3619 return POIOrErr.takeError();
3620
3621 return Error::success();
3622 }
3623
3624 case FunctionDecl::TK_FunctionTemplateSpecialization: {
3625 auto FunctionAndArgsOrErr =
3626 ImportFunctionTemplateWithTemplateArgsFromSpecialization(FromFD);
3627 if (!FunctionAndArgsOrErr)
3628 return FunctionAndArgsOrErr.takeError();
3629
3630 TemplateArgumentList *ToTAList = TemplateArgumentList::CreateCopy(
3631 Context&: Importer.getToContext(), Args: std::get<1>(t&: *FunctionAndArgsOrErr));
3632
3633 auto *FTSInfo = FromFD->getTemplateSpecializationInfo();
3634 TemplateArgumentListInfo ToTAInfo;
3635 const auto *FromTAArgsAsWritten = FTSInfo->TemplateArgumentsAsWritten;
3636 if (FromTAArgsAsWritten)
3637 if (Error Err = ImportTemplateArgumentListInfo(
3638 From: *FromTAArgsAsWritten, Result&: ToTAInfo))
3639 return Err;
3640
3641 ExpectedSLoc POIOrErr = import(From: FTSInfo->getPointOfInstantiation());
3642 if (!POIOrErr)
3643 return POIOrErr.takeError();
3644
3645 if (Error Err = ImportTemplateParameterLists(FromD: FromFD, ToD: ToFD))
3646 return Err;
3647
3648 TemplateSpecializationKind TSK = FTSInfo->getTemplateSpecializationKind();
3649 ToFD->setFunctionTemplateSpecialization(
3650 Template: std::get<0>(t&: *FunctionAndArgsOrErr), TemplateArgs: ToTAList, /* InsertPos= */ nullptr,
3651 TSK, TemplateArgsAsWritten: FromTAArgsAsWritten ? &ToTAInfo : nullptr, PointOfInstantiation: *POIOrErr);
3652 return Error::success();
3653 }
3654
3655 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
3656 auto *FromInfo = FromFD->getDependentSpecializationInfo();
3657 UnresolvedSet<8> Candidates;
3658 for (FunctionTemplateDecl *FTD : FromInfo->getCandidates()) {
3659 if (Expected<FunctionTemplateDecl *> ToFTDOrErr = import(From: FTD))
3660 Candidates.addDecl(D: *ToFTDOrErr);
3661 else
3662 return ToFTDOrErr.takeError();
3663 }
3664
3665 // Import TemplateArgumentListInfo.
3666 TemplateArgumentListInfo ToTAInfo;
3667 const auto *FromTAArgsAsWritten = FromInfo->TemplateArgumentsAsWritten;
3668 if (FromTAArgsAsWritten)
3669 if (Error Err =
3670 ImportTemplateArgumentListInfo(From: *FromTAArgsAsWritten, Result&: ToTAInfo))
3671 return Err;
3672
3673 ToFD->setDependentTemplateSpecialization(
3674 Context&: Importer.getToContext(), Templates: Candidates,
3675 TemplateArgs: FromTAArgsAsWritten ? &ToTAInfo : nullptr);
3676 return Error::success();
3677 }
3678 }
3679 llvm_unreachable("All cases should be covered!");
3680}
3681
3682Expected<FunctionDecl *>
3683ASTNodeImporter::FindFunctionTemplateSpecialization(FunctionDecl *FromFD) {
3684 auto FunctionAndArgsOrErr =
3685 ImportFunctionTemplateWithTemplateArgsFromSpecialization(FromFD);
3686 if (!FunctionAndArgsOrErr)
3687 return FunctionAndArgsOrErr.takeError();
3688
3689 FunctionTemplateDecl *Template;
3690 TemplateArgsTy ToTemplArgs;
3691 std::tie(args&: Template, args&: ToTemplArgs) = *FunctionAndArgsOrErr;
3692 void *InsertPos = nullptr;
3693 auto *FoundSpec = Template->findSpecialization(Args: ToTemplArgs, InsertPos);
3694 return FoundSpec;
3695}
3696
3697Error ASTNodeImporter::ImportFunctionDeclBody(FunctionDecl *FromFD,
3698 FunctionDecl *ToFD) {
3699 if (Stmt *FromBody = FromFD->getBody()) {
3700 if (ExpectedStmt ToBodyOrErr = import(From: FromBody))
3701 ToFD->setBody(*ToBodyOrErr);
3702 else
3703 return ToBodyOrErr.takeError();
3704 }
3705 return Error::success();
3706}
3707
3708// Returns true if the given D has a DeclContext up to the TranslationUnitDecl
3709// which is equal to the given DC, or D is equal to DC.
3710static bool isAncestorDeclContextOf(const DeclContext *DC, const Decl *D) {
3711 const DeclContext *DCi = dyn_cast<DeclContext>(Val: D);
3712 if (!DCi)
3713 DCi = D->getDeclContext();
3714 assert(DCi && "Declaration should have a context");
3715 while (DCi != D->getTranslationUnitDecl()) {
3716 if (DCi == DC)
3717 return true;
3718 DCi = DCi->getParent();
3719 }
3720 return false;
3721}
3722
3723// Check if there is a declaration that has 'DC' as parent context and is
3724// referenced from statement 'S' or one of its children. The search is done in
3725// BFS order through children of 'S'.
3726static bool isAncestorDeclContextOf(const DeclContext *DC, const Stmt *S) {
3727 SmallVector<const Stmt *> ToProcess;
3728 ToProcess.push_back(Elt: S);
3729 while (!ToProcess.empty()) {
3730 const Stmt *CurrentS = ToProcess.pop_back_val();
3731 ToProcess.append(in_start: CurrentS->child_begin(), in_end: CurrentS->child_end());
3732 if (const auto *DeclRef = dyn_cast<DeclRefExpr>(Val: CurrentS)) {
3733 if (const Decl *D = DeclRef->getDecl())
3734 if (isAncestorDeclContextOf(DC, D))
3735 return true;
3736 } else if (const auto *E =
3737 dyn_cast_or_null<SubstNonTypeTemplateParmExpr>(Val: CurrentS)) {
3738 if (const Decl *D = E->getAssociatedDecl())
3739 if (isAncestorDeclContextOf(DC, D))
3740 return true;
3741 }
3742 }
3743 return false;
3744}
3745
3746namespace {
3747/// Check if a type has any reference to a declaration that is inside the body
3748/// of a function.
3749/// The \c CheckType(QualType) function should be used to determine
3750/// this property.
3751///
3752/// The type visitor visits one type object only (not recursive).
3753/// To find all referenced declarations we must discover all type objects until
3754/// the canonical type is reached (walk over typedef and similar objects). This
3755/// is done by loop over all "sugar" type objects. For every such type we must
3756/// check all declarations that are referenced from it. For this check the
3757/// visitor is used. In the visit functions all referenced declarations except
3758/// the one that follows in the sugar chain (if any) must be checked. For this
3759/// check the same visitor is re-used (it has no state-dependent data).
3760///
3761/// The visit functions have 3 possible return values:
3762/// - True, found a declaration inside \c ParentDC.
3763/// - False, found declarations only outside \c ParentDC and it is not possible
3764/// to find more declarations (the "sugar" chain does not continue).
3765/// - Empty optional value, found no declarations or only outside \c ParentDC,
3766/// but it is possible to find more declarations in the type "sugar" chain.
3767/// The loop over the "sugar" types can be implemented by using type visit
3768/// functions only (call \c CheckType with the desugared type). With the current
3769/// solution no visit function is needed if the type has only a desugared type
3770/// as data.
3771class IsTypeDeclaredInsideVisitor
3772 : public TypeVisitor<IsTypeDeclaredInsideVisitor, std::optional<bool>> {
3773public:
3774 IsTypeDeclaredInsideVisitor(const FunctionDecl *ParentDC)
3775 : ParentDC(ParentDC) {}
3776
3777 bool CheckType(QualType T) {
3778 // Check the chain of "sugar" types.
3779 // The "sugar" types are typedef or similar types that have the same
3780 // canonical type.
3781 if (std::optional<bool> Res = Visit(T: T.getTypePtr()))
3782 return *Res;
3783 QualType DsT =
3784 T.getSingleStepDesugaredType(Context: ParentDC->getParentASTContext());
3785 while (DsT != T) {
3786 if (std::optional<bool> Res = Visit(T: DsT.getTypePtr()))
3787 return *Res;
3788 T = DsT;
3789 DsT = T.getSingleStepDesugaredType(Context: ParentDC->getParentASTContext());
3790 }
3791 return false;
3792 }
3793
3794 std::optional<bool> VisitTagType(const TagType *T) {
3795 if (auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(Val: T->getDecl()))
3796 for (const auto &Arg : Spec->getTemplateArgs().asArray())
3797 if (checkTemplateArgument(Arg))
3798 return true;
3799 return isAncestorDeclContextOf(DC: ParentDC, D: T->getDecl());
3800 }
3801
3802 std::optional<bool> VisitPointerType(const PointerType *T) {
3803 return CheckType(T: T->getPointeeType());
3804 }
3805
3806 std::optional<bool> VisitReferenceType(const ReferenceType *T) {
3807 return CheckType(T: T->getPointeeTypeAsWritten());
3808 }
3809
3810 std::optional<bool> VisitTypedefType(const TypedefType *T) {
3811 return isAncestorDeclContextOf(DC: ParentDC, D: T->getDecl());
3812 }
3813
3814 std::optional<bool> VisitUsingType(const UsingType *T) {
3815 return isAncestorDeclContextOf(DC: ParentDC, D: T->getDecl());
3816 }
3817
3818 std::optional<bool>
3819 VisitTemplateSpecializationType(const TemplateSpecializationType *T) {
3820 for (const auto &Arg : T->template_arguments())
3821 if (checkTemplateArgument(Arg))
3822 return true;
3823 // This type is a "sugar" to a record type, it can have a desugared type.
3824 return {};
3825 }
3826
3827 std::optional<bool> VisitUnaryTransformType(const UnaryTransformType *T) {
3828 return CheckType(T: T->getBaseType());
3829 }
3830
3831 std::optional<bool>
3832 VisitSubstTemplateTypeParmType(const SubstTemplateTypeParmType *T) {
3833 // The "associated declaration" can be the same as ParentDC.
3834 if (isAncestorDeclContextOf(DC: ParentDC, D: T->getAssociatedDecl()))
3835 return true;
3836 return {};
3837 }
3838
3839 std::optional<bool> VisitConstantArrayType(const ConstantArrayType *T) {
3840 if (T->getSizeExpr() && isAncestorDeclContextOf(DC: ParentDC, S: T->getSizeExpr()))
3841 return true;
3842
3843 return CheckType(T: T->getElementType());
3844 }
3845
3846 std::optional<bool> VisitVariableArrayType(const VariableArrayType *T) {
3847 llvm_unreachable(
3848 "Variable array should not occur in deduced return type of a function");
3849 }
3850
3851 std::optional<bool> VisitIncompleteArrayType(const IncompleteArrayType *T) {
3852 llvm_unreachable("Incomplete array should not occur in deduced return type "
3853 "of a function");
3854 }
3855
3856 std::optional<bool> VisitDependentArrayType(const IncompleteArrayType *T) {
3857 llvm_unreachable("Dependent array should not occur in deduced return type "
3858 "of a function");
3859 }
3860
3861private:
3862 const DeclContext *const ParentDC;
3863
3864 bool checkTemplateArgument(const TemplateArgument &Arg) {
3865 switch (Arg.getKind()) {
3866 case TemplateArgument::Null:
3867 return false;
3868 case TemplateArgument::Integral:
3869 return CheckType(T: Arg.getIntegralType());
3870 case TemplateArgument::Type:
3871 return CheckType(T: Arg.getAsType());
3872 case TemplateArgument::Expression:
3873 return isAncestorDeclContextOf(DC: ParentDC, S: Arg.getAsExpr());
3874 case TemplateArgument::Declaration:
3875 // FIXME: The declaration in this case is not allowed to be in a function?
3876 return isAncestorDeclContextOf(DC: ParentDC, D: Arg.getAsDecl());
3877 case TemplateArgument::NullPtr:
3878 // FIXME: The type is not allowed to be in the function?
3879 return CheckType(T: Arg.getNullPtrType());
3880 case TemplateArgument::StructuralValue:
3881 return CheckType(T: Arg.getStructuralValueType());
3882 case TemplateArgument::Pack:
3883 for (const auto &PackArg : Arg.getPackAsArray())
3884 if (checkTemplateArgument(Arg: PackArg))
3885 return true;
3886 return false;
3887 case TemplateArgument::Template:
3888 // Templates can not be defined locally in functions.
3889 // A template passed as argument can be not in ParentDC.
3890 return false;
3891 case TemplateArgument::TemplateExpansion:
3892 // Templates can not be defined locally in functions.
3893 // A template passed as argument can be not in ParentDC.
3894 return false;
3895 }
3896 llvm_unreachable("Unknown TemplateArgument::ArgKind enum");
3897 };
3898};
3899} // namespace
3900
3901/// This function checks if the given function has a return type that contains
3902/// a reference (in any way) to a declaration inside the same function.
3903bool ASTNodeImporter::hasReturnTypeDeclaredInside(FunctionDecl *D) {
3904 QualType FromTy = D->getType();
3905 const auto *FromFPT = FromTy->getAs<FunctionProtoType>();
3906 assert(FromFPT && "Must be called on FunctionProtoType");
3907
3908 auto IsCXX11Lambda = [&]() {
3909 if (Importer.FromContext.getLangOpts().CPlusPlus14) // C++14 or later
3910 return false;
3911
3912 return isLambdaMethod(DC: D);
3913 };
3914
3915 QualType RetT = FromFPT->getReturnType();
3916 if (isa<AutoType>(Val: RetT.getTypePtr()) || IsCXX11Lambda()) {
3917 FunctionDecl *Def = D->getDefinition();
3918 IsTypeDeclaredInsideVisitor Visitor(Def ? Def : D);
3919 return Visitor.CheckType(T: RetT);
3920 }
3921
3922 return false;
3923}
3924
3925ExplicitSpecifier
3926ASTNodeImporter::importExplicitSpecifier(Error &Err, ExplicitSpecifier ESpec) {
3927 Expr *ExplicitExpr = ESpec.getExpr();
3928 if (ExplicitExpr)
3929 ExplicitExpr = importChecked(Err, From: ESpec.getExpr());
3930 return ExplicitSpecifier(ExplicitExpr, ESpec.getKind());
3931}
3932
3933ExpectedDecl ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) {
3934
3935 SmallVector<Decl *, 2> Redecls = getCanonicalForwardRedeclChain(D);
3936 auto RedeclIt = Redecls.begin();
3937 // Import the first part of the decl chain. I.e. import all previous
3938 // declarations starting from the canonical decl.
3939 for (; RedeclIt != Redecls.end() && *RedeclIt != D; ++RedeclIt) {
3940 ExpectedDecl ToRedeclOrErr = import(From: *RedeclIt);
3941 if (!ToRedeclOrErr)
3942 return ToRedeclOrErr.takeError();
3943 }
3944 assert(*RedeclIt == D);
3945
3946 // Import the major distinguishing characteristics of this function.
3947 DeclContext *DC, *LexicalDC;
3948 DeclarationName Name;
3949 SourceLocation Loc;
3950 NamedDecl *ToD;
3951 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
3952 return std::move(Err);
3953 if (ToD)
3954 return ToD;
3955
3956 FunctionDecl *FoundByLookup = nullptr;
3957 FunctionTemplateDecl *FromFT = D->getDescribedFunctionTemplate();
3958
3959 // If this is a function template specialization, then try to find the same
3960 // existing specialization in the "to" context. The lookup below will not
3961 // find any specialization, but would find the primary template; thus, we
3962 // have to skip normal lookup in case of specializations.
3963 // FIXME handle member function templates (TK_MemberSpecialization) similarly?
3964 if (D->getTemplatedKind() ==
3965 FunctionDecl::TK_FunctionTemplateSpecialization) {
3966 auto FoundFunctionOrErr = FindFunctionTemplateSpecialization(FromFD: D);
3967 if (!FoundFunctionOrErr)
3968 return FoundFunctionOrErr.takeError();
3969 if (FunctionDecl *FoundFunction = *FoundFunctionOrErr) {
3970 if (Decl *Def = FindAndMapDefinition(D, FoundFunction))
3971 return Def;
3972 FoundByLookup = FoundFunction;
3973 }
3974 }
3975 // Try to find a function in our own ("to") context with the same name, same
3976 // type, and in the same context as the function we're importing.
3977 else if (!LexicalDC->isFunctionOrMethod()) {
3978 SmallVector<NamedDecl *, 4> ConflictingDecls;
3979 unsigned IDNS = Decl::IDNS_Ordinary | Decl::IDNS_OrdinaryFriend;
3980 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
3981 for (auto *FoundDecl : FoundDecls) {
3982 if (!FoundDecl->isInIdentifierNamespace(NS: IDNS))
3983 continue;
3984
3985 if (auto *FoundFunction = dyn_cast<FunctionDecl>(Val: FoundDecl)) {
3986 if (!hasSameVisibilityContextAndLinkage(Found: FoundFunction, From: D))
3987 continue;
3988
3989 if (IsStructuralMatch(From: D, To: FoundFunction)) {
3990 if (Decl *Def = FindAndMapDefinition(D, FoundFunction))
3991 return Def;
3992 FoundByLookup = FoundFunction;
3993 break;
3994 }
3995 // FIXME: Check for overloading more carefully, e.g., by boosting
3996 // Sema::IsOverload out to the AST library.
3997
3998 // Function overloading is okay in C++.
3999 if (Importer.getToContext().getLangOpts().CPlusPlus)
4000 continue;
4001
4002 // Complain about inconsistent function types.
4003 Importer.ToDiag(Loc, DiagID: diag::warn_odr_function_type_inconsistent)
4004 << Name << D->getType() << FoundFunction->getType();
4005 Importer.ToDiag(Loc: FoundFunction->getLocation(), DiagID: diag::note_odr_value_here)
4006 << FoundFunction->getType();
4007 ConflictingDecls.push_back(Elt: FoundDecl);
4008 }
4009 }
4010
4011 if (!ConflictingDecls.empty()) {
4012 ExpectedName NameOrErr = Importer.HandleNameConflict(
4013 Name, DC, IDNS, Decls: ConflictingDecls.data(), NumDecls: ConflictingDecls.size());
4014 if (NameOrErr)
4015 Name = NameOrErr.get();
4016 else
4017 return NameOrErr.takeError();
4018 }
4019 }
4020
4021 // We do not allow more than one in-class declaration of a function. This is
4022 // because AST clients like VTableBuilder asserts on this. VTableBuilder
4023 // assumes there is only one in-class declaration. Building a redecl
4024 // chain would result in more than one in-class declaration for
4025 // overrides (even if they are part of the same redecl chain inside the
4026 // derived class.)
4027 if (FoundByLookup) {
4028 if (isa<CXXMethodDecl>(Val: FoundByLookup)) {
4029 if (D->getLexicalDeclContext() == D->getDeclContext()) {
4030 if (!D->doesThisDeclarationHaveABody()) {
4031 if (FunctionTemplateDecl *DescribedD =
4032 D->getDescribedFunctionTemplate()) {
4033 // Handle a "templated" function together with its described
4034 // template. This avoids need for a similar check at import of the
4035 // described template.
4036 assert(FoundByLookup->getDescribedFunctionTemplate() &&
4037 "Templated function mapped to non-templated?");
4038 Importer.MapImported(From: DescribedD,
4039 To: FoundByLookup->getDescribedFunctionTemplate());
4040 }
4041 return Importer.MapImported(From: D, To: FoundByLookup);
4042 } else {
4043 // Let's continue and build up the redecl chain in this case.
4044 // FIXME Merge the functions into one decl.
4045 }
4046 }
4047 }
4048 }
4049
4050 DeclarationNameInfo NameInfo(Name, Loc);
4051 // Import additional name location/type info.
4052 if (Error Err = ImportDeclarationNameLoc(From: D->getNameInfo(), To&: NameInfo))
4053 return std::move(Err);
4054
4055 QualType FromTy = D->getType();
4056 TypeSourceInfo *FromTSI = D->getTypeSourceInfo();
4057 // Set to true if we do not import the type of the function as is. There are
4058 // cases when the original type would result in an infinite recursion during
4059 // the import. To avoid an infinite recursion when importing, we create the
4060 // FunctionDecl with a simplified function type and update it only after the
4061 // relevant AST nodes are already imported.
4062 // The type is related to TypeSourceInfo (it references the type), so we must
4063 // do the same with TypeSourceInfo.
4064 bool UsedDifferentProtoType = false;
4065 if (const auto *FromFPT = FromTy->getAs<FunctionProtoType>()) {
4066 QualType FromReturnTy = FromFPT->getReturnType();
4067 // Functions with auto return type may define a struct inside their body
4068 // and the return type could refer to that struct.
4069 // E.g.: auto foo() { struct X{}; return X(); }
4070 // To avoid an infinite recursion when importing, create the FunctionDecl
4071 // with a simplified return type.
4072 // Reuse this approach for auto return types declared as typenames from
4073 // template params, tracked in FindFunctionDeclImportCycle.
4074 if (hasReturnTypeDeclaredInside(D) ||
4075 Importer.FindFunctionDeclImportCycle.isCycle(D)) {
4076 FromReturnTy = Importer.getFromContext().VoidTy;
4077 UsedDifferentProtoType = true;
4078 }
4079 FunctionProtoType::ExtProtoInfo FromEPI = FromFPT->getExtProtoInfo();
4080 // FunctionProtoType::ExtProtoInfo's ExceptionSpecDecl can point to the
4081 // FunctionDecl that we are importing the FunctionProtoType for.
4082 // To avoid an infinite recursion when importing, create the FunctionDecl
4083 // with a simplified function type.
4084 if (FromEPI.ExceptionSpec.SourceDecl ||
4085 FromEPI.ExceptionSpec.SourceTemplate ||
4086 FromEPI.ExceptionSpec.NoexceptExpr) {
4087 FunctionProtoType::ExtProtoInfo DefaultEPI;
4088 FromEPI = DefaultEPI;
4089 UsedDifferentProtoType = true;
4090 }
4091 FromTy = Importer.getFromContext().getFunctionType(
4092 ResultTy: FromReturnTy, Args: FromFPT->getParamTypes(), EPI: FromEPI);
4093 FromTSI = Importer.getFromContext().getTrivialTypeSourceInfo(
4094 T: FromTy, Loc: D->getBeginLoc());
4095 }
4096
4097 Error Err = Error::success();
4098 auto ScopedReturnTypeDeclCycleDetector =
4099 Importer.FindFunctionDeclImportCycle.makeScopedCycleDetection(D);
4100 auto T = importChecked(Err, From: FromTy);
4101 auto TInfo = importChecked(Err, From: FromTSI);
4102 auto ToInnerLocStart = importChecked(Err, From: D->getInnerLocStart());
4103 auto ToEndLoc = importChecked(Err, From: D->getEndLoc());
4104 auto ToDefaultLoc = importChecked(Err, From: D->getDefaultLoc());
4105 auto ToQualifierLoc = importChecked(Err, From: D->getQualifierLoc());
4106 AssociatedConstraint TrailingRequiresClause = D->getTrailingRequiresClause();
4107 TrailingRequiresClause.ConstraintExpr =
4108 importChecked(Err, From: TrailingRequiresClause.ConstraintExpr);
4109 if (Err)
4110 return std::move(Err);
4111
4112 // Import the function parameters.
4113 SmallVector<ParmVarDecl *, 8> Parameters;
4114 for (auto *P : D->parameters()) {
4115 if (Expected<ParmVarDecl *> ToPOrErr = import(From: P))
4116 Parameters.push_back(Elt: *ToPOrErr);
4117 else
4118 return ToPOrErr.takeError();
4119 }
4120
4121 // Create the imported function.
4122 FunctionDecl *ToFunction = nullptr;
4123 if (auto *FromConstructor = dyn_cast<CXXConstructorDecl>(Val: D)) {
4124 ExplicitSpecifier ESpec =
4125 importExplicitSpecifier(Err, ESpec: FromConstructor->getExplicitSpecifier());
4126 if (Err)
4127 return std::move(Err);
4128 auto ToInheritedConstructor = InheritedConstructor();
4129 if (FromConstructor->isInheritingConstructor()) {
4130 Expected<InheritedConstructor> ImportedInheritedCtor =
4131 import(From: FromConstructor->getInheritedConstructor());
4132 if (!ImportedInheritedCtor)
4133 return ImportedInheritedCtor.takeError();
4134 ToInheritedConstructor = *ImportedInheritedCtor;
4135 }
4136 if (GetImportedOrCreateDecl<CXXConstructorDecl>(
4137 ToD&: ToFunction, FromD: D, args&: Importer.getToContext(), args: cast<CXXRecordDecl>(Val: DC),
4138 args&: ToInnerLocStart, args&: NameInfo, args&: T, args&: TInfo, args&: ESpec, args: D->UsesFPIntrin(),
4139 args: D->isInlineSpecified(), args: D->isImplicit(), args: D->getConstexprKind(),
4140 args&: ToInheritedConstructor, args&: TrailingRequiresClause))
4141 return ToFunction;
4142 } else if (CXXDestructorDecl *FromDtor = dyn_cast<CXXDestructorDecl>(Val: D)) {
4143
4144 Error Err = Error::success();
4145 auto ToOperatorDelete = importChecked(
4146 Err, From: const_cast<FunctionDecl *>(FromDtor->getOperatorDelete()));
4147 auto ToThisArg = importChecked(Err, From: FromDtor->getOperatorDeleteThisArg());
4148 if (Err)
4149 return std::move(Err);
4150
4151 if (GetImportedOrCreateDecl<CXXDestructorDecl>(
4152 ToD&: ToFunction, FromD: D, args&: Importer.getToContext(), args: cast<CXXRecordDecl>(Val: DC),
4153 args&: ToInnerLocStart, args&: NameInfo, args&: T, args&: TInfo, args: D->UsesFPIntrin(),
4154 args: D->isInlineSpecified(), args: D->isImplicit(), args: D->getConstexprKind(),
4155 args&: TrailingRequiresClause))
4156 return ToFunction;
4157
4158 CXXDestructorDecl *ToDtor = cast<CXXDestructorDecl>(Val: ToFunction);
4159
4160 ToDtor->setOperatorDelete(OD: ToOperatorDelete, ThisArg: ToThisArg);
4161 } else if (CXXConversionDecl *FromConversion =
4162 dyn_cast<CXXConversionDecl>(Val: D)) {
4163 ExplicitSpecifier ESpec =
4164 importExplicitSpecifier(Err, ESpec: FromConversion->getExplicitSpecifier());
4165 if (Err)
4166 return std::move(Err);
4167 if (GetImportedOrCreateDecl<CXXConversionDecl>(
4168 ToD&: ToFunction, FromD: D, args&: Importer.getToContext(), args: cast<CXXRecordDecl>(Val: DC),
4169 args&: ToInnerLocStart, args&: NameInfo, args&: T, args&: TInfo, args: D->UsesFPIntrin(),
4170 args: D->isInlineSpecified(), args&: ESpec, args: D->getConstexprKind(),
4171 args: SourceLocation(), args&: TrailingRequiresClause))
4172 return ToFunction;
4173 } else if (auto *Method = dyn_cast<CXXMethodDecl>(Val: D)) {
4174 if (GetImportedOrCreateDecl<CXXMethodDecl>(
4175 ToD&: ToFunction, FromD: D, args&: Importer.getToContext(), args: cast<CXXRecordDecl>(Val: DC),
4176 args&: ToInnerLocStart, args&: NameInfo, args&: T, args&: TInfo, args: Method->getStorageClass(),
4177 args: Method->UsesFPIntrin(), args: Method->isInlineSpecified(),
4178 args: D->getConstexprKind(), args: SourceLocation(), args&: TrailingRequiresClause))
4179 return ToFunction;
4180 } else if (auto *Guide = dyn_cast<CXXDeductionGuideDecl>(Val: D)) {
4181 ExplicitSpecifier ESpec =
4182 importExplicitSpecifier(Err, ESpec: Guide->getExplicitSpecifier());
4183 CXXConstructorDecl *Ctor =
4184 importChecked(Err, From: Guide->getCorrespondingConstructor());
4185 const CXXDeductionGuideDecl *SourceDG =
4186 importChecked(Err, From: Guide->getSourceDeductionGuide());
4187 if (Err)
4188 return std::move(Err);
4189 if (GetImportedOrCreateDecl<CXXDeductionGuideDecl>(
4190 ToD&: ToFunction, FromD: D, args&: Importer.getToContext(), args&: DC, args&: ToInnerLocStart, args&: ESpec,
4191 args&: NameInfo, args&: T, args&: TInfo, args&: ToEndLoc, args&: Ctor,
4192 args: Guide->getDeductionCandidateKind(), args&: TrailingRequiresClause,
4193 args&: SourceDG, args: Guide->getSourceDeductionGuideKind()))
4194 return ToFunction;
4195 } else {
4196 if (GetImportedOrCreateDecl(
4197 ToD&: ToFunction, FromD: D, args&: Importer.getToContext(), args&: DC, args&: ToInnerLocStart,
4198 args&: NameInfo, args&: T, args&: TInfo, args: D->getStorageClass(), args: D->UsesFPIntrin(),
4199 args: D->isInlineSpecified(), args: D->hasWrittenPrototype(),
4200 args: D->getConstexprKind(), args&: TrailingRequiresClause))
4201 return ToFunction;
4202 }
4203
4204 // Connect the redecl chain.
4205 if (FoundByLookup) {
4206 auto *Recent = const_cast<FunctionDecl *>(
4207 FoundByLookup->getMostRecentDecl());
4208 ToFunction->setPreviousDecl(Recent);
4209 // FIXME Probably we should merge exception specifications. E.g. In the
4210 // "To" context the existing function may have exception specification with
4211 // noexcept-unevaluated, while the newly imported function may have an
4212 // evaluated noexcept. A call to adjustExceptionSpec() on the imported
4213 // decl and its redeclarations may be required.
4214 }
4215
4216 StringLiteral *Msg = D->getDeletedMessage();
4217 if (Msg) {
4218 auto Imported = import(From: Msg);
4219 if (!Imported)
4220 return Imported.takeError();
4221 Msg = *Imported;
4222 }
4223
4224 ToFunction->setQualifierInfo(ToQualifierLoc);
4225 ToFunction->setAccess(D->getAccess());
4226 ToFunction->setLexicalDeclContext(LexicalDC);
4227 ToFunction->setVirtualAsWritten(D->isVirtualAsWritten());
4228 ToFunction->setTrivial(D->isTrivial());
4229 ToFunction->setIsPureVirtual(D->isPureVirtual());
4230 ToFunction->setDefaulted(D->isDefaulted());
4231 ToFunction->setExplicitlyDefaulted(D->isExplicitlyDefaulted());
4232 ToFunction->setDeletedAsWritten(D: D->isDeletedAsWritten());
4233 ToFunction->setFriendConstraintRefersToEnclosingTemplate(
4234 D->FriendConstraintRefersToEnclosingTemplate());
4235 ToFunction->setIsDestroyingOperatorDelete(D->isDestroyingOperatorDelete());
4236 ToFunction->setIsTypeAwareOperatorNewOrDelete(
4237 D->isTypeAwareOperatorNewOrDelete());
4238 ToFunction->setRangeEnd(ToEndLoc);
4239 ToFunction->setDefaultLoc(ToDefaultLoc);
4240
4241 if (Msg)
4242 ToFunction->setDefaultedOrDeletedInfo(
4243 FunctionDecl::DefaultedOrDeletedFunctionInfo::Create(
4244 Context&: Importer.getToContext(), Lookups: {}, DeletedMessage: Msg));
4245
4246 // Set the parameters.
4247 for (auto *Param : Parameters) {
4248 Param->setOwningFunction(ToFunction);
4249 ToFunction->addDeclInternal(D: Param);
4250 if (ASTImporterLookupTable *LT = Importer.SharedState->getLookupTable())
4251 LT->update(ND: Param, OldDC: Importer.getToContext().getTranslationUnitDecl());
4252 }
4253 ToFunction->setParams(Parameters);
4254
4255 // We need to complete creation of FunctionProtoTypeLoc manually with setting
4256 // params it refers to.
4257 if (TInfo) {
4258 if (auto ProtoLoc =
4259 TInfo->getTypeLoc().IgnoreParens().getAs<FunctionProtoTypeLoc>()) {
4260 for (unsigned I = 0, N = Parameters.size(); I != N; ++I)
4261 ProtoLoc.setParam(i: I, VD: Parameters[I]);
4262 }
4263 }
4264
4265 // Import the describing template function, if any.
4266 if (FromFT) {
4267 auto ToFTOrErr = import(From: FromFT);
4268 if (!ToFTOrErr)
4269 return ToFTOrErr.takeError();
4270 }
4271
4272 // Import Ctor initializers.
4273 if (auto *FromConstructor = dyn_cast<CXXConstructorDecl>(Val: D)) {
4274 if (unsigned NumInitializers = FromConstructor->getNumCtorInitializers()) {
4275 SmallVector<CXXCtorInitializer *, 4> CtorInitializers(NumInitializers);
4276 // Import first, then allocate memory and copy if there was no error.
4277 if (Error Err = ImportContainerChecked(
4278 InContainer: FromConstructor->inits(), OutContainer&: CtorInitializers))
4279 return std::move(Err);
4280 auto **Memory =
4281 new (Importer.getToContext()) CXXCtorInitializer *[NumInitializers];
4282 llvm::copy(Range&: CtorInitializers, Out: Memory);
4283 auto *ToCtor = cast<CXXConstructorDecl>(Val: ToFunction);
4284 ToCtor->setCtorInitializers(Memory);
4285 ToCtor->setNumCtorInitializers(NumInitializers);
4286 }
4287 }
4288
4289 // If it is a template, import all related things.
4290 if (Error Err = ImportTemplateInformation(FromFD: D, ToFD: ToFunction))
4291 return std::move(Err);
4292
4293 if (auto *FromCXXMethod = dyn_cast<CXXMethodDecl>(Val: D))
4294 if (Error Err = ImportOverriddenMethods(ToMethod: cast<CXXMethodDecl>(Val: ToFunction),
4295 FromMethod: FromCXXMethod))
4296 return std::move(Err);
4297
4298 if (D->doesThisDeclarationHaveABody()) {
4299 Error Err = ImportFunctionDeclBody(FromFD: D, ToFD: ToFunction);
4300
4301 if (Err)
4302 return std::move(Err);
4303 }
4304
4305 // Import and set the original type in case we used another type.
4306 if (UsedDifferentProtoType) {
4307 if (ExpectedType TyOrErr = import(From: D->getType()))
4308 ToFunction->setType(*TyOrErr);
4309 else
4310 return TyOrErr.takeError();
4311 if (Expected<TypeSourceInfo *> TSIOrErr = import(From: D->getTypeSourceInfo()))
4312 ToFunction->setTypeSourceInfo(*TSIOrErr);
4313 else
4314 return TSIOrErr.takeError();
4315 }
4316
4317 // FIXME: Other bits to merge?
4318
4319 addDeclToContexts(FromD: D, ToD: ToFunction);
4320
4321 // Import the rest of the chain. I.e. import all subsequent declarations.
4322 for (++RedeclIt; RedeclIt != Redecls.end(); ++RedeclIt) {
4323 ExpectedDecl ToRedeclOrErr = import(From: *RedeclIt);
4324 if (!ToRedeclOrErr)
4325 return ToRedeclOrErr.takeError();
4326 }
4327
4328 return ToFunction;
4329}
4330
4331ExpectedDecl ASTNodeImporter::VisitCXXMethodDecl(CXXMethodDecl *D) {
4332 return VisitFunctionDecl(D);
4333}
4334
4335ExpectedDecl ASTNodeImporter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
4336 return VisitCXXMethodDecl(D);
4337}
4338
4339ExpectedDecl ASTNodeImporter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
4340 return VisitCXXMethodDecl(D);
4341}
4342
4343ExpectedDecl ASTNodeImporter::VisitCXXConversionDecl(CXXConversionDecl *D) {
4344 return VisitCXXMethodDecl(D);
4345}
4346
4347ExpectedDecl
4348ASTNodeImporter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
4349 return VisitFunctionDecl(D);
4350}
4351
4352ExpectedDecl ASTNodeImporter::VisitFieldDecl(FieldDecl *D) {
4353 // Import the major distinguishing characteristics of a variable.
4354 DeclContext *DC, *LexicalDC;
4355 DeclarationName Name;
4356 SourceLocation Loc;
4357 NamedDecl *ToD;
4358 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4359 return std::move(Err);
4360 if (ToD)
4361 return ToD;
4362
4363 // Determine whether we've already imported this field.
4364 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
4365 for (auto *FoundDecl : FoundDecls) {
4366 if (FieldDecl *FoundField = dyn_cast<FieldDecl>(Val: FoundDecl)) {
4367 // For anonymous fields, match up by index.
4368 if (!Name &&
4369 ASTImporter::getFieldIndex(F: D) !=
4370 ASTImporter::getFieldIndex(F: FoundField))
4371 continue;
4372
4373 if (Importer.IsStructurallyEquivalent(From: D->getType(),
4374 To: FoundField->getType())) {
4375 Importer.MapImported(From: D, To: FoundField);
4376 // In case of a FieldDecl of a ClassTemplateSpecializationDecl, the
4377 // initializer of a FieldDecl might not had been instantiated in the
4378 // "To" context. However, the "From" context might instantiated that,
4379 // thus we have to merge that.
4380 // Note: `hasInClassInitializer()` is not the same as non-null
4381 // `getInClassInitializer()` value.
4382 if (Expr *FromInitializer = D->getInClassInitializer()) {
4383 if (ExpectedExpr ToInitializerOrErr = import(From: FromInitializer)) {
4384 // Import of the FromInitializer may result in the setting of
4385 // InClassInitializer. If not, set it here.
4386 assert(FoundField->hasInClassInitializer() &&
4387 "Field should have an in-class initializer if it has an "
4388 "expression for it.");
4389 if (!FoundField->getInClassInitializer())
4390 FoundField->setInClassInitializer(*ToInitializerOrErr);
4391 } else {
4392 return ToInitializerOrErr.takeError();
4393 }
4394 }
4395 return FoundField;
4396 }
4397
4398 // FIXME: Why is this case not handled with calling HandleNameConflict?
4399 Importer.ToDiag(Loc, DiagID: diag::warn_odr_field_type_inconsistent)
4400 << Name << D->getType() << FoundField->getType();
4401 Importer.ToDiag(Loc: FoundField->getLocation(), DiagID: diag::note_odr_value_here)
4402 << FoundField->getType();
4403
4404 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
4405 }
4406 }
4407
4408 Error Err = Error::success();
4409 auto ToType = importChecked(Err, From: D->getType());
4410 auto ToTInfo = importChecked(Err, From: D->getTypeSourceInfo());
4411 auto ToBitWidth = importChecked(Err, From: D->getBitWidth());
4412 auto ToInnerLocStart = importChecked(Err, From: D->getInnerLocStart());
4413 if (Err)
4414 return std::move(Err);
4415 const Type *ToCapturedVLAType = nullptr;
4416 if (Error Err = Importer.importInto(
4417 To&: ToCapturedVLAType, From: cast_or_null<Type>(Val: D->getCapturedVLAType())))
4418 return std::move(Err);
4419
4420 FieldDecl *ToField;
4421 if (GetImportedOrCreateDecl(ToD&: ToField, FromD: D, args&: Importer.getToContext(), args&: DC,
4422 args&: ToInnerLocStart, args&: Loc, args: Name.getAsIdentifierInfo(),
4423 args&: ToType, args&: ToTInfo, args&: ToBitWidth, args: D->isMutable(),
4424 args: D->getInClassInitStyle()))
4425 return ToField;
4426
4427 ToField->setAccess(D->getAccess());
4428 ToField->setLexicalDeclContext(LexicalDC);
4429 ToField->setImplicit(D->isImplicit());
4430 if (ToCapturedVLAType)
4431 ToField->setCapturedVLAType(cast<VariableArrayType>(Val: ToCapturedVLAType));
4432 LexicalDC->addDeclInternal(D: ToField);
4433 // Import initializer only after the field was created, it may have recursive
4434 // reference to the field.
4435 auto ToInitializer = importChecked(Err, From: D->getInClassInitializer());
4436 if (Err)
4437 return std::move(Err);
4438 if (ToInitializer) {
4439 auto *AlreadyImported = ToField->getInClassInitializer();
4440 if (AlreadyImported)
4441 assert(ToInitializer == AlreadyImported &&
4442 "Duplicate import of in-class initializer.");
4443 else
4444 ToField->setInClassInitializer(ToInitializer);
4445 }
4446
4447 return ToField;
4448}
4449
4450ExpectedDecl ASTNodeImporter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
4451 // Import the major distinguishing characteristics of a variable.
4452 DeclContext *DC, *LexicalDC;
4453 DeclarationName Name;
4454 SourceLocation Loc;
4455 NamedDecl *ToD;
4456 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4457 return std::move(Err);
4458 if (ToD)
4459 return ToD;
4460
4461 // Determine whether we've already imported this field.
4462 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
4463 for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
4464 if (auto *FoundField = dyn_cast<IndirectFieldDecl>(Val: FoundDecls[I])) {
4465 // For anonymous indirect fields, match up by index.
4466 if (!Name &&
4467 ASTImporter::getFieldIndex(F: D) !=
4468 ASTImporter::getFieldIndex(F: FoundField))
4469 continue;
4470
4471 if (Importer.IsStructurallyEquivalent(From: D->getType(),
4472 To: FoundField->getType(),
4473 Complain: !Name.isEmpty())) {
4474 Importer.MapImported(From: D, To: FoundField);
4475 return FoundField;
4476 }
4477
4478 // If there are more anonymous fields to check, continue.
4479 if (!Name && I < N-1)
4480 continue;
4481
4482 // FIXME: Why is this case not handled with calling HandleNameConflict?
4483 Importer.ToDiag(Loc, DiagID: diag::warn_odr_field_type_inconsistent)
4484 << Name << D->getType() << FoundField->getType();
4485 Importer.ToDiag(Loc: FoundField->getLocation(), DiagID: diag::note_odr_value_here)
4486 << FoundField->getType();
4487
4488 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
4489 }
4490 }
4491
4492 // Import the type.
4493 auto TypeOrErr = import(From: D->getType());
4494 if (!TypeOrErr)
4495 return TypeOrErr.takeError();
4496
4497 auto **NamedChain =
4498 new (Importer.getToContext()) NamedDecl*[D->getChainingSize()];
4499
4500 unsigned i = 0;
4501 for (auto *PI : D->chain())
4502 if (Expected<NamedDecl *> ToD = import(From: PI))
4503 NamedChain[i++] = *ToD;
4504 else
4505 return ToD.takeError();
4506
4507 MutableArrayRef<NamedDecl *> CH = {NamedChain, D->getChainingSize()};
4508 IndirectFieldDecl *ToIndirectField;
4509 if (GetImportedOrCreateDecl(ToD&: ToIndirectField, FromD: D, args&: Importer.getToContext(), args&: DC,
4510 args&: Loc, args: Name.getAsIdentifierInfo(), args&: *TypeOrErr, args&: CH))
4511 // FIXME here we leak `NamedChain` which is allocated before
4512 return ToIndirectField;
4513
4514 ToIndirectField->setAccess(D->getAccess());
4515 ToIndirectField->setLexicalDeclContext(LexicalDC);
4516 LexicalDC->addDeclInternal(D: ToIndirectField);
4517 return ToIndirectField;
4518}
4519
4520/// Used as return type of getFriendCountAndPosition.
4521struct FriendCountAndPosition {
4522 /// Number of similar looking friends.
4523 unsigned int TotalCount;
4524 /// Index of the specific FriendDecl.
4525 unsigned int IndexOfDecl;
4526};
4527
4528static bool IsEquivalentFriend(ASTImporter &Importer, FriendDecl *FD1,
4529 FriendDecl *FD2) {
4530 if ((!FD1->getFriendType()) != (!FD2->getFriendType()))
4531 return false;
4532
4533 if (const TypeSourceInfo *TSI = FD1->getFriendType())
4534 return Importer.IsStructurallyEquivalent(
4535 From: TSI->getType(), To: FD2->getFriendType()->getType(), /*Complain=*/false);
4536
4537 ASTImporter::NonEquivalentDeclSet NonEquivalentDecls;
4538 StructuralEquivalenceContext Ctx(
4539 Importer.getToContext().getLangOpts(), FD1->getASTContext(),
4540 FD2->getASTContext(), NonEquivalentDecls,
4541 StructuralEquivalenceKind::Default,
4542 /* StrictTypeSpelling = */ false, /* Complain = */ false);
4543 return Ctx.IsEquivalent(D1: FD1, D2: FD2);
4544}
4545
4546static FriendCountAndPosition getFriendCountAndPosition(ASTImporter &Importer,
4547 FriendDecl *FD) {
4548 unsigned int FriendCount = 0;
4549 UnsignedOrNone FriendPosition = std::nullopt;
4550 const auto *RD = cast<CXXRecordDecl>(Val: FD->getLexicalDeclContext());
4551
4552 for (FriendDecl *FoundFriend : RD->friends()) {
4553 if (FoundFriend == FD) {
4554 FriendPosition = FriendCount;
4555 ++FriendCount;
4556 } else if (IsEquivalentFriend(Importer, FD1: FD, FD2: FoundFriend)) {
4557 ++FriendCount;
4558 }
4559 }
4560
4561 assert(FriendPosition && "Friend decl not found in own parent.");
4562
4563 return {.TotalCount: FriendCount, .IndexOfDecl: *FriendPosition};
4564}
4565
4566ExpectedDecl ASTNodeImporter::VisitFriendDecl(FriendDecl *D) {
4567 // Import the major distinguishing characteristics of a declaration.
4568 DeclContext *DC, *LexicalDC;
4569 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
4570 return std::move(Err);
4571
4572 // Determine whether we've already imported this decl.
4573 // FriendDecl is not a NamedDecl so we cannot use lookup.
4574 // We try to maintain order and count of redundant friend declarations.
4575 const auto *RD = cast<CXXRecordDecl>(Val: DC);
4576 SmallVector<FriendDecl *, 2> ImportedEquivalentFriends;
4577 for (FriendDecl *ImportedFriend : RD->friends())
4578 if (IsEquivalentFriend(Importer, FD1: D, FD2: ImportedFriend))
4579 ImportedEquivalentFriends.push_back(Elt: ImportedFriend);
4580
4581 FriendCountAndPosition CountAndPosition =
4582 getFriendCountAndPosition(Importer, FD: D);
4583
4584 assert(ImportedEquivalentFriends.size() <= CountAndPosition.TotalCount &&
4585 "Class with non-matching friends is imported, ODR check wrong?");
4586 if (ImportedEquivalentFriends.size() == CountAndPosition.TotalCount)
4587 return Importer.MapImported(
4588 From: D, To: ImportedEquivalentFriends[CountAndPosition.IndexOfDecl]);
4589
4590 // Not found. Create it.
4591 // The declarations will be put into order later by ImportDeclContext.
4592 FriendDecl::FriendUnion ToFU;
4593 if (NamedDecl *FriendD = D->getFriendDecl()) {
4594 NamedDecl *ToFriendD;
4595 if (Error Err = importInto(To&: ToFriendD, From: FriendD))
4596 return std::move(Err);
4597
4598 if (FriendD->getFriendObjectKind() != Decl::FOK_None &&
4599 !(FriendD->isInIdentifierNamespace(NS: Decl::IDNS_NonMemberOperator)))
4600 ToFriendD->setObjectOfFriendDecl(false);
4601
4602 ToFU = ToFriendD;
4603 } else { // The friend is a type, not a decl.
4604 if (auto TSIOrErr = import(From: D->getFriendType()))
4605 ToFU = *TSIOrErr;
4606 else
4607 return TSIOrErr.takeError();
4608 }
4609
4610 SmallVector<TemplateParameterList *, 1> ToTPLists(D->NumTPLists);
4611 auto **FromTPLists = D->getTrailingObjects();
4612 for (unsigned I = 0; I < D->NumTPLists; I++) {
4613 if (auto ListOrErr = import(From: FromTPLists[I]))
4614 ToTPLists[I] = *ListOrErr;
4615 else
4616 return ListOrErr.takeError();
4617 }
4618
4619 auto LocationOrErr = import(From: D->getLocation());
4620 if (!LocationOrErr)
4621 return LocationOrErr.takeError();
4622 auto FriendLocOrErr = import(From: D->getFriendLoc());
4623 if (!FriendLocOrErr)
4624 return FriendLocOrErr.takeError();
4625 auto EllipsisLocOrErr = import(From: D->getEllipsisLoc());
4626 if (!EllipsisLocOrErr)
4627 return EllipsisLocOrErr.takeError();
4628
4629 FriendDecl *FrD;
4630 if (GetImportedOrCreateDecl(ToD&: FrD, FromD: D, args&: Importer.getToContext(), args&: DC,
4631 args&: *LocationOrErr, args&: ToFU, args&: *FriendLocOrErr,
4632 args&: *EllipsisLocOrErr, args&: ToTPLists))
4633 return FrD;
4634
4635 FrD->setAccess(D->getAccess());
4636 FrD->setLexicalDeclContext(LexicalDC);
4637 LexicalDC->addDeclInternal(D: FrD);
4638 return FrD;
4639}
4640
4641ExpectedDecl ASTNodeImporter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
4642 // Import the major distinguishing characteristics of an ivar.
4643 DeclContext *DC, *LexicalDC;
4644 DeclarationName Name;
4645 SourceLocation Loc;
4646 NamedDecl *ToD;
4647 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4648 return std::move(Err);
4649 if (ToD)
4650 return ToD;
4651
4652 // Determine whether we've already imported this ivar
4653 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
4654 for (auto *FoundDecl : FoundDecls) {
4655 if (ObjCIvarDecl *FoundIvar = dyn_cast<ObjCIvarDecl>(Val: FoundDecl)) {
4656 if (Importer.IsStructurallyEquivalent(From: D->getType(),
4657 To: FoundIvar->getType())) {
4658 Importer.MapImported(From: D, To: FoundIvar);
4659 return FoundIvar;
4660 }
4661
4662 Importer.ToDiag(Loc, DiagID: diag::warn_odr_ivar_type_inconsistent)
4663 << Name << D->getType() << FoundIvar->getType();
4664 Importer.ToDiag(Loc: FoundIvar->getLocation(), DiagID: diag::note_odr_value_here)
4665 << FoundIvar->getType();
4666
4667 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
4668 }
4669 }
4670
4671 Error Err = Error::success();
4672 auto ToType = importChecked(Err, From: D->getType());
4673 auto ToTypeSourceInfo = importChecked(Err, From: D->getTypeSourceInfo());
4674 auto ToBitWidth = importChecked(Err, From: D->getBitWidth());
4675 auto ToInnerLocStart = importChecked(Err, From: D->getInnerLocStart());
4676 if (Err)
4677 return std::move(Err);
4678
4679 ObjCIvarDecl *ToIvar;
4680 if (GetImportedOrCreateDecl(
4681 ToD&: ToIvar, FromD: D, args&: Importer.getToContext(), args: cast<ObjCContainerDecl>(Val: DC),
4682 args&: ToInnerLocStart, args&: Loc, args: Name.getAsIdentifierInfo(),
4683 args&: ToType, args&: ToTypeSourceInfo,
4684 args: D->getAccessControl(),args&: ToBitWidth, args: D->getSynthesize()))
4685 return ToIvar;
4686
4687 ToIvar->setLexicalDeclContext(LexicalDC);
4688 LexicalDC->addDeclInternal(D: ToIvar);
4689 return ToIvar;
4690}
4691
4692ExpectedDecl ASTNodeImporter::VisitVarDecl(VarDecl *D) {
4693
4694 SmallVector<Decl*, 2> Redecls = getCanonicalForwardRedeclChain(D);
4695 auto RedeclIt = Redecls.begin();
4696 // Import the first part of the decl chain. I.e. import all previous
4697 // declarations starting from the canonical decl.
4698 for (; RedeclIt != Redecls.end() && *RedeclIt != D; ++RedeclIt) {
4699 ExpectedDecl RedeclOrErr = import(From: *RedeclIt);
4700 if (!RedeclOrErr)
4701 return RedeclOrErr.takeError();
4702 }
4703 assert(*RedeclIt == D);
4704
4705 // Import the major distinguishing characteristics of a variable.
4706 DeclContext *DC, *LexicalDC;
4707 DeclarationName Name;
4708 SourceLocation Loc;
4709 NamedDecl *ToD;
4710 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4711 return std::move(Err);
4712 if (ToD)
4713 return ToD;
4714
4715 // Try to find a variable in our own ("to") context with the same name and
4716 // in the same context as the variable we're importing.
4717 VarDecl *FoundByLookup = nullptr;
4718 if (D->isFileVarDecl()) {
4719 SmallVector<NamedDecl *, 4> ConflictingDecls;
4720 unsigned IDNS = Decl::IDNS_Ordinary;
4721 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
4722 for (auto *FoundDecl : FoundDecls) {
4723 if (!FoundDecl->isInIdentifierNamespace(NS: IDNS))
4724 continue;
4725
4726 if (auto *FoundVar = dyn_cast<VarDecl>(Val: FoundDecl)) {
4727 if (!hasSameVisibilityContextAndLinkage(Found: FoundVar, From: D))
4728 continue;
4729 if (Importer.IsStructurallyEquivalent(From: D->getType(),
4730 To: FoundVar->getType())) {
4731
4732 // The VarDecl in the "From" context has a definition, but in the
4733 // "To" context we already have a definition.
4734 VarDecl *FoundDef = FoundVar->getDefinition();
4735 if (D->isThisDeclarationADefinition() && FoundDef)
4736 // FIXME Check for ODR error if the two definitions have
4737 // different initializers?
4738 return Importer.MapImported(From: D, To: FoundDef);
4739
4740 // The VarDecl in the "From" context has an initializer, but in the
4741 // "To" context we already have an initializer.
4742 const VarDecl *FoundDInit = nullptr;
4743 if (D->getInit() && FoundVar->getAnyInitializer(D&: FoundDInit))
4744 // FIXME Diagnose ODR error if the two initializers are different?
4745 return Importer.MapImported(From: D, To: const_cast<VarDecl*>(FoundDInit));
4746
4747 FoundByLookup = FoundVar;
4748 break;
4749 }
4750
4751 const ArrayType *FoundArray
4752 = Importer.getToContext().getAsArrayType(T: FoundVar->getType());
4753 const ArrayType *TArray
4754 = Importer.getToContext().getAsArrayType(T: D->getType());
4755 if (FoundArray && TArray) {
4756 if (isa<IncompleteArrayType>(Val: FoundArray) &&
4757 isa<ConstantArrayType>(Val: TArray)) {
4758 // Import the type.
4759 if (auto TyOrErr = import(From: D->getType()))
4760 FoundVar->setType(*TyOrErr);
4761 else
4762 return TyOrErr.takeError();
4763
4764 FoundByLookup = FoundVar;
4765 break;
4766 } else if (isa<IncompleteArrayType>(Val: TArray) &&
4767 isa<ConstantArrayType>(Val: FoundArray)) {
4768 FoundByLookup = FoundVar;
4769 break;
4770 }
4771 }
4772
4773 Importer.ToDiag(Loc, DiagID: diag::warn_odr_variable_type_inconsistent)
4774 << Name << D->getType() << FoundVar->getType();
4775 Importer.ToDiag(Loc: FoundVar->getLocation(), DiagID: diag::note_odr_value_here)
4776 << FoundVar->getType();
4777 ConflictingDecls.push_back(Elt: FoundDecl);
4778 }
4779 }
4780
4781 if (!ConflictingDecls.empty()) {
4782 ExpectedName NameOrErr = Importer.HandleNameConflict(
4783 Name, DC, IDNS, Decls: ConflictingDecls.data(), NumDecls: ConflictingDecls.size());
4784 if (NameOrErr)
4785 Name = NameOrErr.get();
4786 else
4787 return NameOrErr.takeError();
4788 }
4789 }
4790
4791 Error Err = Error::success();
4792 auto ToType = importChecked(Err, From: D->getType());
4793 auto ToTypeSourceInfo = importChecked(Err, From: D->getTypeSourceInfo());
4794 auto ToInnerLocStart = importChecked(Err, From: D->getInnerLocStart());
4795 auto ToQualifierLoc = importChecked(Err, From: D->getQualifierLoc());
4796 if (Err)
4797 return std::move(Err);
4798
4799 VarDecl *ToVar;
4800 if (auto *FromDecomp = dyn_cast<DecompositionDecl>(Val: D)) {
4801 SmallVector<BindingDecl *> Bindings(FromDecomp->bindings().size());
4802 if (Error Err =
4803 ImportArrayChecked(InContainer: FromDecomp->bindings(), Obegin: Bindings.begin()))
4804 return std::move(Err);
4805 DecompositionDecl *ToDecomp;
4806 if (GetImportedOrCreateDecl(
4807 ToD&: ToDecomp, FromD: FromDecomp, args&: Importer.getToContext(), args&: DC, args&: ToInnerLocStart,
4808 args&: Loc, args&: ToType, args&: ToTypeSourceInfo, args: D->getStorageClass(), args&: Bindings))
4809 return ToDecomp;
4810 ToVar = ToDecomp;
4811 } else {
4812 // Create the imported variable.
4813 if (GetImportedOrCreateDecl(ToD&: ToVar, FromD: D, args&: Importer.getToContext(), args&: DC,
4814 args&: ToInnerLocStart, args&: Loc,
4815 args: Name.getAsIdentifierInfo(), args&: ToType,
4816 args&: ToTypeSourceInfo, args: D->getStorageClass()))
4817 return ToVar;
4818 }
4819
4820 ToVar->setTSCSpec(D->getTSCSpec());
4821 ToVar->setQualifierInfo(ToQualifierLoc);
4822 ToVar->setAccess(D->getAccess());
4823 ToVar->setLexicalDeclContext(LexicalDC);
4824 if (D->isInlineSpecified())
4825 ToVar->setInlineSpecified();
4826 if (D->isInline())
4827 ToVar->setImplicitlyInline();
4828
4829 if (FoundByLookup) {
4830 auto *Recent = const_cast<VarDecl *>(FoundByLookup->getMostRecentDecl());
4831 ToVar->setPreviousDecl(Recent);
4832 }
4833
4834 // Import the described template, if any.
4835 if (D->getDescribedVarTemplate()) {
4836 auto ToVTOrErr = import(From: D->getDescribedVarTemplate());
4837 if (!ToVTOrErr)
4838 return ToVTOrErr.takeError();
4839 } else if (MemberSpecializationInfo *MSI = D->getMemberSpecializationInfo()) {
4840 TemplateSpecializationKind SK = MSI->getTemplateSpecializationKind();
4841 VarDecl *FromInst = D->getInstantiatedFromStaticDataMember();
4842 if (Expected<VarDecl *> ToInstOrErr = import(From: FromInst))
4843 ToVar->setInstantiationOfStaticDataMember(VD: *ToInstOrErr, TSK: SK);
4844 else
4845 return ToInstOrErr.takeError();
4846 if (ExpectedSLoc POIOrErr = import(From: MSI->getPointOfInstantiation()))
4847 ToVar->getMemberSpecializationInfo()->setPointOfInstantiation(*POIOrErr);
4848 else
4849 return POIOrErr.takeError();
4850 }
4851
4852 if (Error Err = ImportInitializer(From: D, To: ToVar))
4853 return std::move(Err);
4854
4855 if (D->isConstexpr())
4856 ToVar->setConstexpr(true);
4857
4858 addDeclToContexts(FromD: D, ToD: ToVar);
4859
4860 // Import the rest of the chain. I.e. import all subsequent declarations.
4861 for (++RedeclIt; RedeclIt != Redecls.end(); ++RedeclIt) {
4862 ExpectedDecl RedeclOrErr = import(From: *RedeclIt);
4863 if (!RedeclOrErr)
4864 return RedeclOrErr.takeError();
4865 }
4866
4867 return ToVar;
4868}
4869
4870ExpectedDecl ASTNodeImporter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
4871 // Parameters are created in the translation unit's context, then moved
4872 // into the function declaration's context afterward.
4873 DeclContext *DC = Importer.getToContext().getTranslationUnitDecl();
4874
4875 Error Err = Error::success();
4876 auto ToDeclName = importChecked(Err, From: D->getDeclName());
4877 auto ToLocation = importChecked(Err, From: D->getLocation());
4878 auto ToType = importChecked(Err, From: D->getType());
4879 if (Err)
4880 return std::move(Err);
4881
4882 // Create the imported parameter.
4883 ImplicitParamDecl *ToParm = nullptr;
4884 if (GetImportedOrCreateDecl(ToD&: ToParm, FromD: D, args&: Importer.getToContext(), args&: DC,
4885 args&: ToLocation, args: ToDeclName.getAsIdentifierInfo(),
4886 args&: ToType, args: D->getParameterKind()))
4887 return ToParm;
4888 return ToParm;
4889}
4890
4891Error ASTNodeImporter::ImportDefaultArgOfParmVarDecl(
4892 const ParmVarDecl *FromParam, ParmVarDecl *ToParam) {
4893
4894 if (auto LocOrErr = import(From: FromParam->getExplicitObjectParamThisLoc()))
4895 ToParam->setExplicitObjectParameterLoc(*LocOrErr);
4896 else
4897 return LocOrErr.takeError();
4898
4899 ToParam->setHasInheritedDefaultArg(FromParam->hasInheritedDefaultArg());
4900 ToParam->setKNRPromoted(FromParam->isKNRPromoted());
4901
4902 if (FromParam->hasUninstantiatedDefaultArg()) {
4903 if (auto ToDefArgOrErr = import(From: FromParam->getUninstantiatedDefaultArg()))
4904 ToParam->setUninstantiatedDefaultArg(*ToDefArgOrErr);
4905 else
4906 return ToDefArgOrErr.takeError();
4907 } else if (FromParam->hasUnparsedDefaultArg()) {
4908 ToParam->setUnparsedDefaultArg();
4909 } else if (FromParam->hasDefaultArg()) {
4910 if (auto ToDefArgOrErr = import(From: FromParam->getDefaultArg()))
4911 ToParam->setDefaultArg(*ToDefArgOrErr);
4912 else
4913 return ToDefArgOrErr.takeError();
4914 }
4915
4916 return Error::success();
4917}
4918
4919Expected<InheritedConstructor>
4920ASTNodeImporter::ImportInheritedConstructor(const InheritedConstructor &From) {
4921 Error Err = Error::success();
4922 CXXConstructorDecl *ToBaseCtor = importChecked(Err, From: From.getConstructor());
4923 ConstructorUsingShadowDecl *ToShadow =
4924 importChecked(Err, From: From.getShadowDecl());
4925 if (Err)
4926 return std::move(Err);
4927 return InheritedConstructor(ToShadow, ToBaseCtor);
4928}
4929
4930ExpectedDecl ASTNodeImporter::VisitParmVarDecl(ParmVarDecl *D) {
4931 // Parameters are created in the translation unit's context, then moved
4932 // into the function declaration's context afterward.
4933 DeclContext *DC = Importer.getToContext().getTranslationUnitDecl();
4934
4935 Error Err = Error::success();
4936 auto ToDeclName = importChecked(Err, From: D->getDeclName());
4937 auto ToLocation = importChecked(Err, From: D->getLocation());
4938 auto ToInnerLocStart = importChecked(Err, From: D->getInnerLocStart());
4939 auto ToType = importChecked(Err, From: D->getType());
4940 auto ToTypeSourceInfo = importChecked(Err, From: D->getTypeSourceInfo());
4941 if (Err)
4942 return std::move(Err);
4943
4944 ParmVarDecl *ToParm;
4945 if (GetImportedOrCreateDecl(ToD&: ToParm, FromD: D, args&: Importer.getToContext(), args&: DC,
4946 args&: ToInnerLocStart, args&: ToLocation,
4947 args: ToDeclName.getAsIdentifierInfo(), args&: ToType,
4948 args&: ToTypeSourceInfo, args: D->getStorageClass(),
4949 /*DefaultArg*/ args: nullptr))
4950 return ToParm;
4951
4952 // Set the default argument. It should be no problem if it was already done.
4953 // Do not import the default expression before GetImportedOrCreateDecl call
4954 // to avoid possible infinite import loop because circular dependency.
4955 if (Error Err = ImportDefaultArgOfParmVarDecl(FromParam: D, ToParam: ToParm))
4956 return std::move(Err);
4957
4958 if (D->isObjCMethodParameter()) {
4959 ToParm->setObjCMethodScopeInfo(D->getFunctionScopeIndex());
4960 ToParm->setObjCDeclQualifier(D->getObjCDeclQualifier());
4961 } else {
4962 ToParm->setScopeInfo(scopeDepth: D->getFunctionScopeDepth(),
4963 parameterIndex: D->getFunctionScopeIndex());
4964 }
4965
4966 return ToParm;
4967}
4968
4969ExpectedDecl ASTNodeImporter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
4970 // Import the major distinguishing characteristics of a method.
4971 DeclContext *DC, *LexicalDC;
4972 DeclarationName Name;
4973 SourceLocation Loc;
4974 NamedDecl *ToD;
4975 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
4976 return std::move(Err);
4977 if (ToD)
4978 return ToD;
4979
4980 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
4981 for (auto *FoundDecl : FoundDecls) {
4982 if (auto *FoundMethod = dyn_cast<ObjCMethodDecl>(Val: FoundDecl)) {
4983 if (FoundMethod->isInstanceMethod() != D->isInstanceMethod())
4984 continue;
4985
4986 // Check return types.
4987 if (!Importer.IsStructurallyEquivalent(From: D->getReturnType(),
4988 To: FoundMethod->getReturnType())) {
4989 Importer.ToDiag(Loc, DiagID: diag::warn_odr_objc_method_result_type_inconsistent)
4990 << D->isInstanceMethod() << Name << D->getReturnType()
4991 << FoundMethod->getReturnType();
4992 Importer.ToDiag(Loc: FoundMethod->getLocation(),
4993 DiagID: diag::note_odr_objc_method_here)
4994 << D->isInstanceMethod() << Name;
4995
4996 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
4997 }
4998
4999 // Check the number of parameters.
5000 if (D->param_size() != FoundMethod->param_size()) {
5001 Importer.ToDiag(Loc, DiagID: diag::warn_odr_objc_method_num_params_inconsistent)
5002 << D->isInstanceMethod() << Name
5003 << D->param_size() << FoundMethod->param_size();
5004 Importer.ToDiag(Loc: FoundMethod->getLocation(),
5005 DiagID: diag::note_odr_objc_method_here)
5006 << D->isInstanceMethod() << Name;
5007
5008 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
5009 }
5010
5011 // Check parameter types.
5012 for (ObjCMethodDecl::param_iterator P = D->param_begin(),
5013 PEnd = D->param_end(), FoundP = FoundMethod->param_begin();
5014 P != PEnd; ++P, ++FoundP) {
5015 if (!Importer.IsStructurallyEquivalent(From: (*P)->getType(),
5016 To: (*FoundP)->getType())) {
5017 Importer.FromDiag(Loc: (*P)->getLocation(),
5018 DiagID: diag::warn_odr_objc_method_param_type_inconsistent)
5019 << D->isInstanceMethod() << Name
5020 << (*P)->getType() << (*FoundP)->getType();
5021 Importer.ToDiag(Loc: (*FoundP)->getLocation(), DiagID: diag::note_odr_value_here)
5022 << (*FoundP)->getType();
5023
5024 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
5025 }
5026 }
5027
5028 // Check variadic/non-variadic.
5029 // Check the number of parameters.
5030 if (D->isVariadic() != FoundMethod->isVariadic()) {
5031 Importer.ToDiag(Loc, DiagID: diag::warn_odr_objc_method_variadic_inconsistent)
5032 << D->isInstanceMethod() << Name;
5033 Importer.ToDiag(Loc: FoundMethod->getLocation(),
5034 DiagID: diag::note_odr_objc_method_here)
5035 << D->isInstanceMethod() << Name;
5036
5037 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
5038 }
5039
5040 // FIXME: Any other bits we need to merge?
5041 return Importer.MapImported(From: D, To: FoundMethod);
5042 }
5043 }
5044
5045 Error Err = Error::success();
5046 auto ToEndLoc = importChecked(Err, From: D->getEndLoc());
5047 auto ToReturnType = importChecked(Err, From: D->getReturnType());
5048 auto ToReturnTypeSourceInfo =
5049 importChecked(Err, From: D->getReturnTypeSourceInfo());
5050 if (Err)
5051 return std::move(Err);
5052
5053 ObjCMethodDecl *ToMethod;
5054 if (GetImportedOrCreateDecl(
5055 ToD&: ToMethod, FromD: D, args&: Importer.getToContext(), args&: Loc, args&: ToEndLoc,
5056 args: Name.getObjCSelector(), args&: ToReturnType, args&: ToReturnTypeSourceInfo, args&: DC,
5057 args: D->isInstanceMethod(), args: D->isVariadic(), args: D->isPropertyAccessor(),
5058 args: D->isSynthesizedAccessorStub(), args: D->isImplicit(), args: D->isDefined(),
5059 args: D->getImplementationControl(), args: D->hasRelatedResultType()))
5060 return ToMethod;
5061
5062 // FIXME: When we decide to merge method definitions, we'll need to
5063 // deal with implicit parameters.
5064
5065 // Import the parameters
5066 SmallVector<ParmVarDecl *, 5> ToParams;
5067 for (auto *FromP : D->parameters()) {
5068 if (Expected<ParmVarDecl *> ToPOrErr = import(From: FromP))
5069 ToParams.push_back(Elt: *ToPOrErr);
5070 else
5071 return ToPOrErr.takeError();
5072 }
5073
5074 // Set the parameters.
5075 for (auto *ToParam : ToParams) {
5076 ToParam->setOwningFunction(ToMethod);
5077 ToMethod->addDeclInternal(D: ToParam);
5078 }
5079
5080 SmallVector<SourceLocation, 12> FromSelLocs;
5081 D->getSelectorLocs(SelLocs&: FromSelLocs);
5082 SmallVector<SourceLocation, 12> ToSelLocs(FromSelLocs.size());
5083 if (Error Err = ImportContainerChecked(InContainer: FromSelLocs, OutContainer&: ToSelLocs))
5084 return std::move(Err);
5085
5086 ToMethod->setMethodParams(C&: Importer.getToContext(), Params: ToParams, SelLocs: ToSelLocs);
5087
5088 ToMethod->setLexicalDeclContext(LexicalDC);
5089 LexicalDC->addDeclInternal(D: ToMethod);
5090
5091 // Implicit params are declared when Sema encounters the definition but this
5092 // never happens when the method is imported. Manually declare the implicit
5093 // params now that the MethodDecl knows its class interface.
5094 if (D->getSelfDecl())
5095 ToMethod->createImplicitParams(Context&: Importer.getToContext(),
5096 ID: ToMethod->getClassInterface());
5097
5098 return ToMethod;
5099}
5100
5101ExpectedDecl ASTNodeImporter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
5102 // Import the major distinguishing characteristics of a category.
5103 DeclContext *DC, *LexicalDC;
5104 DeclarationName Name;
5105 SourceLocation Loc;
5106 NamedDecl *ToD;
5107 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5108 return std::move(Err);
5109 if (ToD)
5110 return ToD;
5111
5112 Error Err = Error::success();
5113 auto ToVarianceLoc = importChecked(Err, From: D->getVarianceLoc());
5114 auto ToLocation = importChecked(Err, From: D->getLocation());
5115 auto ToColonLoc = importChecked(Err, From: D->getColonLoc());
5116 auto ToTypeSourceInfo = importChecked(Err, From: D->getTypeSourceInfo());
5117 if (Err)
5118 return std::move(Err);
5119
5120 ObjCTypeParamDecl *Result;
5121 if (GetImportedOrCreateDecl(
5122 ToD&: Result, FromD: D, args&: Importer.getToContext(), args&: DC, args: D->getVariance(),
5123 args&: ToVarianceLoc, args: D->getIndex(),
5124 args&: ToLocation, args: Name.getAsIdentifierInfo(),
5125 args&: ToColonLoc, args&: ToTypeSourceInfo))
5126 return Result;
5127
5128 // Only import 'ObjCTypeParamType' after the decl is created.
5129 auto ToTypeForDecl = importChecked(Err, From: D->getTypeForDecl());
5130 if (Err)
5131 return std::move(Err);
5132 Result->setTypeForDecl(ToTypeForDecl);
5133 Result->setLexicalDeclContext(LexicalDC);
5134 return Result;
5135}
5136
5137ExpectedDecl ASTNodeImporter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
5138 // Import the major distinguishing characteristics of a category.
5139 DeclContext *DC, *LexicalDC;
5140 DeclarationName Name;
5141 SourceLocation Loc;
5142 NamedDecl *ToD;
5143 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5144 return std::move(Err);
5145 if (ToD)
5146 return ToD;
5147
5148 ObjCInterfaceDecl *ToInterface;
5149 if (Error Err = importInto(To&: ToInterface, From: D->getClassInterface()))
5150 return std::move(Err);
5151
5152 // Determine if we've already encountered this category.
5153 ObjCCategoryDecl *MergeWithCategory
5154 = ToInterface->FindCategoryDeclaration(CategoryId: Name.getAsIdentifierInfo());
5155 ObjCCategoryDecl *ToCategory = MergeWithCategory;
5156 if (!ToCategory) {
5157
5158 Error Err = Error::success();
5159 auto ToAtStartLoc = importChecked(Err, From: D->getAtStartLoc());
5160 auto ToCategoryNameLoc = importChecked(Err, From: D->getCategoryNameLoc());
5161 auto ToIvarLBraceLoc = importChecked(Err, From: D->getIvarLBraceLoc());
5162 auto ToIvarRBraceLoc = importChecked(Err, From: D->getIvarRBraceLoc());
5163 if (Err)
5164 return std::move(Err);
5165
5166 if (GetImportedOrCreateDecl(ToD&: ToCategory, FromD: D, args&: Importer.getToContext(), args&: DC,
5167 args&: ToAtStartLoc, args&: Loc,
5168 args&: ToCategoryNameLoc,
5169 args: Name.getAsIdentifierInfo(), args&: ToInterface,
5170 /*TypeParamList=*/args: nullptr,
5171 args&: ToIvarLBraceLoc,
5172 args&: ToIvarRBraceLoc))
5173 return ToCategory;
5174
5175 ToCategory->setLexicalDeclContext(LexicalDC);
5176 LexicalDC->addDeclInternal(D: ToCategory);
5177 // Import the type parameter list after MapImported, to avoid
5178 // loops when bringing in their DeclContext.
5179 if (auto PListOrErr = ImportObjCTypeParamList(list: D->getTypeParamList()))
5180 ToCategory->setTypeParamList(*PListOrErr);
5181 else
5182 return PListOrErr.takeError();
5183
5184 // Import protocols
5185 SmallVector<ObjCProtocolDecl *, 4> Protocols;
5186 SmallVector<SourceLocation, 4> ProtocolLocs;
5187 ObjCCategoryDecl::protocol_loc_iterator FromProtoLoc
5188 = D->protocol_loc_begin();
5189 for (ObjCCategoryDecl::protocol_iterator FromProto = D->protocol_begin(),
5190 FromProtoEnd = D->protocol_end();
5191 FromProto != FromProtoEnd;
5192 ++FromProto, ++FromProtoLoc) {
5193 if (Expected<ObjCProtocolDecl *> ToProtoOrErr = import(From: *FromProto))
5194 Protocols.push_back(Elt: *ToProtoOrErr);
5195 else
5196 return ToProtoOrErr.takeError();
5197
5198 if (ExpectedSLoc ToProtoLocOrErr = import(From: *FromProtoLoc))
5199 ProtocolLocs.push_back(Elt: *ToProtoLocOrErr);
5200 else
5201 return ToProtoLocOrErr.takeError();
5202 }
5203
5204 // FIXME: If we're merging, make sure that the protocol list is the same.
5205 ToCategory->setProtocolList(List: Protocols.data(), Num: Protocols.size(),
5206 Locs: ProtocolLocs.data(), C&: Importer.getToContext());
5207
5208 } else {
5209 Importer.MapImported(From: D, To: ToCategory);
5210 }
5211
5212 // Import all of the members of this category.
5213 if (Error Err = ImportDeclContext(FromDC: D))
5214 return std::move(Err);
5215
5216 // If we have an implementation, import it as well.
5217 if (D->getImplementation()) {
5218 if (Expected<ObjCCategoryImplDecl *> ToImplOrErr =
5219 import(From: D->getImplementation()))
5220 ToCategory->setImplementation(*ToImplOrErr);
5221 else
5222 return ToImplOrErr.takeError();
5223 }
5224
5225 return ToCategory;
5226}
5227
5228Error ASTNodeImporter::ImportDefinition(
5229 ObjCProtocolDecl *From, ObjCProtocolDecl *To, ImportDefinitionKind Kind) {
5230 if (To->getDefinition()) {
5231 if (shouldForceImportDeclContext(IDK: Kind))
5232 if (Error Err = ImportDeclContext(FromDC: From))
5233 return Err;
5234 return Error::success();
5235 }
5236
5237 // Start the protocol definition
5238 To->startDefinition();
5239
5240 // Import protocols
5241 SmallVector<ObjCProtocolDecl *, 4> Protocols;
5242 SmallVector<SourceLocation, 4> ProtocolLocs;
5243 ObjCProtocolDecl::protocol_loc_iterator FromProtoLoc =
5244 From->protocol_loc_begin();
5245 for (ObjCProtocolDecl::protocol_iterator FromProto = From->protocol_begin(),
5246 FromProtoEnd = From->protocol_end();
5247 FromProto != FromProtoEnd;
5248 ++FromProto, ++FromProtoLoc) {
5249 if (Expected<ObjCProtocolDecl *> ToProtoOrErr = import(From: *FromProto))
5250 Protocols.push_back(Elt: *ToProtoOrErr);
5251 else
5252 return ToProtoOrErr.takeError();
5253
5254 if (ExpectedSLoc ToProtoLocOrErr = import(From: *FromProtoLoc))
5255 ProtocolLocs.push_back(Elt: *ToProtoLocOrErr);
5256 else
5257 return ToProtoLocOrErr.takeError();
5258
5259 }
5260
5261 // FIXME: If we're merging, make sure that the protocol list is the same.
5262 To->setProtocolList(List: Protocols.data(), Num: Protocols.size(),
5263 Locs: ProtocolLocs.data(), C&: Importer.getToContext());
5264
5265 if (shouldForceImportDeclContext(IDK: Kind)) {
5266 // Import all of the members of this protocol.
5267 if (Error Err = ImportDeclContext(FromDC: From, /*ForceImport=*/true))
5268 return Err;
5269 }
5270 return Error::success();
5271}
5272
5273ExpectedDecl ASTNodeImporter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
5274 // If this protocol has a definition in the translation unit we're coming
5275 // from, but this particular declaration is not that definition, import the
5276 // definition and map to that.
5277 ObjCProtocolDecl *Definition = D->getDefinition();
5278 if (Definition && Definition != D) {
5279 if (ExpectedDecl ImportedDefOrErr = import(From: Definition))
5280 return Importer.MapImported(From: D, To: *ImportedDefOrErr);
5281 else
5282 return ImportedDefOrErr.takeError();
5283 }
5284
5285 // Import the major distinguishing characteristics of a protocol.
5286 DeclContext *DC, *LexicalDC;
5287 DeclarationName Name;
5288 SourceLocation Loc;
5289 NamedDecl *ToD;
5290 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5291 return std::move(Err);
5292 if (ToD)
5293 return ToD;
5294
5295 ObjCProtocolDecl *MergeWithProtocol = nullptr;
5296 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
5297 for (auto *FoundDecl : FoundDecls) {
5298 if (!FoundDecl->isInIdentifierNamespace(NS: Decl::IDNS_ObjCProtocol))
5299 continue;
5300
5301 if ((MergeWithProtocol = dyn_cast<ObjCProtocolDecl>(Val: FoundDecl)))
5302 break;
5303 }
5304
5305 ObjCProtocolDecl *ToProto = MergeWithProtocol;
5306 if (!ToProto) {
5307 auto ToAtBeginLocOrErr = import(From: D->getAtStartLoc());
5308 if (!ToAtBeginLocOrErr)
5309 return ToAtBeginLocOrErr.takeError();
5310
5311 if (GetImportedOrCreateDecl(ToD&: ToProto, FromD: D, args&: Importer.getToContext(), args&: DC,
5312 args: Name.getAsIdentifierInfo(), args&: Loc,
5313 args&: *ToAtBeginLocOrErr,
5314 /*PrevDecl=*/args: nullptr))
5315 return ToProto;
5316 ToProto->setLexicalDeclContext(LexicalDC);
5317 LexicalDC->addDeclInternal(D: ToProto);
5318 }
5319
5320 Importer.MapImported(From: D, To: ToProto);
5321
5322 if (D->isThisDeclarationADefinition())
5323 if (Error Err = ImportDefinition(From: D, To: ToProto))
5324 return std::move(Err);
5325
5326 return ToProto;
5327}
5328
5329ExpectedDecl ASTNodeImporter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
5330 DeclContext *DC, *LexicalDC;
5331 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
5332 return std::move(Err);
5333
5334 ExpectedSLoc ExternLocOrErr = import(From: D->getExternLoc());
5335 if (!ExternLocOrErr)
5336 return ExternLocOrErr.takeError();
5337
5338 ExpectedSLoc LangLocOrErr = import(From: D->getLocation());
5339 if (!LangLocOrErr)
5340 return LangLocOrErr.takeError();
5341
5342 bool HasBraces = D->hasBraces();
5343
5344 LinkageSpecDecl *ToLinkageSpec;
5345 if (GetImportedOrCreateDecl(ToD&: ToLinkageSpec, FromD: D, args&: Importer.getToContext(), args&: DC,
5346 args&: *ExternLocOrErr, args&: *LangLocOrErr,
5347 args: D->getLanguage(), args&: HasBraces))
5348 return ToLinkageSpec;
5349
5350 if (HasBraces) {
5351 ExpectedSLoc RBraceLocOrErr = import(From: D->getRBraceLoc());
5352 if (!RBraceLocOrErr)
5353 return RBraceLocOrErr.takeError();
5354 ToLinkageSpec->setRBraceLoc(*RBraceLocOrErr);
5355 }
5356
5357 ToLinkageSpec->setLexicalDeclContext(LexicalDC);
5358 LexicalDC->addDeclInternal(D: ToLinkageSpec);
5359
5360 return ToLinkageSpec;
5361}
5362
5363ExpectedDecl ASTNodeImporter::ImportUsingShadowDecls(BaseUsingDecl *D,
5364 BaseUsingDecl *ToSI) {
5365 for (UsingShadowDecl *FromShadow : D->shadows()) {
5366 if (Expected<UsingShadowDecl *> ToShadowOrErr = import(From: FromShadow))
5367 ToSI->addShadowDecl(S: *ToShadowOrErr);
5368 else
5369 // FIXME: We return error here but the definition is already created
5370 // and available with lookups. How to fix this?..
5371 return ToShadowOrErr.takeError();
5372 }
5373 return ToSI;
5374}
5375
5376ExpectedDecl ASTNodeImporter::VisitUsingDecl(UsingDecl *D) {
5377 DeclContext *DC, *LexicalDC;
5378 DeclarationName Name;
5379 SourceLocation Loc;
5380 NamedDecl *ToD = nullptr;
5381 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5382 return std::move(Err);
5383 if (ToD)
5384 return ToD;
5385
5386 Error Err = Error::success();
5387 auto ToLoc = importChecked(Err, From: D->getNameInfo().getLoc());
5388 auto ToUsingLoc = importChecked(Err, From: D->getUsingLoc());
5389 auto ToQualifierLoc = importChecked(Err, From: D->getQualifierLoc());
5390 if (Err)
5391 return std::move(Err);
5392
5393 DeclarationNameInfo NameInfo(Name, ToLoc);
5394 if (Error Err = ImportDeclarationNameLoc(From: D->getNameInfo(), To&: NameInfo))
5395 return std::move(Err);
5396
5397 UsingDecl *ToUsing;
5398 if (GetImportedOrCreateDecl(ToD&: ToUsing, FromD: D, args&: Importer.getToContext(), args&: DC,
5399 args&: ToUsingLoc, args&: ToQualifierLoc, args&: NameInfo,
5400 args: D->hasTypename()))
5401 return ToUsing;
5402
5403 ToUsing->setLexicalDeclContext(LexicalDC);
5404 LexicalDC->addDeclInternal(D: ToUsing);
5405
5406 if (NamedDecl *FromPattern =
5407 Importer.getFromContext().getInstantiatedFromUsingDecl(Inst: D)) {
5408 if (Expected<NamedDecl *> ToPatternOrErr = import(From: FromPattern))
5409 Importer.getToContext().setInstantiatedFromUsingDecl(
5410 Inst: ToUsing, Pattern: *ToPatternOrErr);
5411 else
5412 return ToPatternOrErr.takeError();
5413 }
5414
5415 return ImportUsingShadowDecls(D, ToSI: ToUsing);
5416}
5417
5418ExpectedDecl ASTNodeImporter::VisitUsingEnumDecl(UsingEnumDecl *D) {
5419 DeclContext *DC, *LexicalDC;
5420 DeclarationName Name;
5421 SourceLocation Loc;
5422 NamedDecl *ToD = nullptr;
5423 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5424 return std::move(Err);
5425 if (ToD)
5426 return ToD;
5427
5428 Error Err = Error::success();
5429 auto ToUsingLoc = importChecked(Err, From: D->getUsingLoc());
5430 auto ToEnumLoc = importChecked(Err, From: D->getEnumLoc());
5431 auto ToNameLoc = importChecked(Err, From: D->getLocation());
5432 auto *ToEnumType = importChecked(Err, From: D->getEnumType());
5433 if (Err)
5434 return std::move(Err);
5435
5436 UsingEnumDecl *ToUsingEnum;
5437 if (GetImportedOrCreateDecl(ToD&: ToUsingEnum, FromD: D, args&: Importer.getToContext(), args&: DC,
5438 args&: ToUsingLoc, args&: ToEnumLoc, args&: ToNameLoc, args&: ToEnumType))
5439 return ToUsingEnum;
5440
5441 ToUsingEnum->setLexicalDeclContext(LexicalDC);
5442 LexicalDC->addDeclInternal(D: ToUsingEnum);
5443
5444 if (UsingEnumDecl *FromPattern =
5445 Importer.getFromContext().getInstantiatedFromUsingEnumDecl(Inst: D)) {
5446 if (Expected<UsingEnumDecl *> ToPatternOrErr = import(From: FromPattern))
5447 Importer.getToContext().setInstantiatedFromUsingEnumDecl(Inst: ToUsingEnum,
5448 Pattern: *ToPatternOrErr);
5449 else
5450 return ToPatternOrErr.takeError();
5451 }
5452
5453 return ImportUsingShadowDecls(D, ToSI: ToUsingEnum);
5454}
5455
5456ExpectedDecl ASTNodeImporter::VisitUsingShadowDecl(UsingShadowDecl *D) {
5457 DeclContext *DC, *LexicalDC;
5458 DeclarationName Name;
5459 SourceLocation Loc;
5460 NamedDecl *ToD = nullptr;
5461 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5462 return std::move(Err);
5463 if (ToD)
5464 return ToD;
5465
5466 Expected<BaseUsingDecl *> ToIntroducerOrErr = import(From: D->getIntroducer());
5467 if (!ToIntroducerOrErr)
5468 return ToIntroducerOrErr.takeError();
5469
5470 Expected<NamedDecl *> ToTargetOrErr = import(From: D->getTargetDecl());
5471 if (!ToTargetOrErr)
5472 return ToTargetOrErr.takeError();
5473
5474 UsingShadowDecl *ToShadow;
5475 if (auto *FromConstructorUsingShadow =
5476 dyn_cast<ConstructorUsingShadowDecl>(Val: D)) {
5477 Error Err = Error::success();
5478 ConstructorUsingShadowDecl *Nominated = importChecked(
5479 Err, From: FromConstructorUsingShadow->getNominatedBaseClassShadowDecl());
5480 if (Err)
5481 return std::move(Err);
5482 // The 'Target' parameter of ConstructorUsingShadowDecl constructor
5483 // is really the "NominatedBaseClassShadowDecl" value if it exists
5484 // (see code of ConstructorUsingShadowDecl::ConstructorUsingShadowDecl).
5485 // We should pass the NominatedBaseClassShadowDecl to it (if non-null) to
5486 // get the correct values.
5487 if (GetImportedOrCreateDecl<ConstructorUsingShadowDecl>(
5488 ToD&: ToShadow, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc,
5489 args: cast<UsingDecl>(Val: *ToIntroducerOrErr),
5490 args: Nominated ? Nominated : *ToTargetOrErr,
5491 args: FromConstructorUsingShadow->constructsVirtualBase()))
5492 return ToShadow;
5493 } else {
5494 if (GetImportedOrCreateDecl(ToD&: ToShadow, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc,
5495 args&: Name, args&: *ToIntroducerOrErr, args&: *ToTargetOrErr))
5496 return ToShadow;
5497 }
5498
5499 ToShadow->setLexicalDeclContext(LexicalDC);
5500 ToShadow->setAccess(D->getAccess());
5501
5502 if (UsingShadowDecl *FromPattern =
5503 Importer.getFromContext().getInstantiatedFromUsingShadowDecl(Inst: D)) {
5504 if (Expected<UsingShadowDecl *> ToPatternOrErr = import(From: FromPattern))
5505 Importer.getToContext().setInstantiatedFromUsingShadowDecl(
5506 Inst: ToShadow, Pattern: *ToPatternOrErr);
5507 else
5508 // FIXME: We return error here but the definition is already created
5509 // and available with lookups. How to fix this?..
5510 return ToPatternOrErr.takeError();
5511 }
5512
5513 LexicalDC->addDeclInternal(D: ToShadow);
5514
5515 return ToShadow;
5516}
5517
5518ExpectedDecl ASTNodeImporter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
5519 DeclContext *DC, *LexicalDC;
5520 DeclarationName Name;
5521 SourceLocation Loc;
5522 NamedDecl *ToD = nullptr;
5523 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5524 return std::move(Err);
5525 if (ToD)
5526 return ToD;
5527
5528 auto ToComAncestorOrErr = Importer.ImportContext(FromDC: D->getCommonAncestor());
5529 if (!ToComAncestorOrErr)
5530 return ToComAncestorOrErr.takeError();
5531
5532 Error Err = Error::success();
5533 auto ToNominatedNamespace = importChecked(Err, From: D->getNominatedNamespace());
5534 auto ToUsingLoc = importChecked(Err, From: D->getUsingLoc());
5535 auto ToNamespaceKeyLocation =
5536 importChecked(Err, From: D->getNamespaceKeyLocation());
5537 auto ToQualifierLoc = importChecked(Err, From: D->getQualifierLoc());
5538 auto ToIdentLocation = importChecked(Err, From: D->getIdentLocation());
5539 if (Err)
5540 return std::move(Err);
5541
5542 UsingDirectiveDecl *ToUsingDir;
5543 if (GetImportedOrCreateDecl(ToD&: ToUsingDir, FromD: D, args&: Importer.getToContext(), args&: DC,
5544 args&: ToUsingLoc,
5545 args&: ToNamespaceKeyLocation,
5546 args&: ToQualifierLoc,
5547 args&: ToIdentLocation,
5548 args&: ToNominatedNamespace, args&: *ToComAncestorOrErr))
5549 return ToUsingDir;
5550
5551 ToUsingDir->setLexicalDeclContext(LexicalDC);
5552 LexicalDC->addDeclInternal(D: ToUsingDir);
5553
5554 return ToUsingDir;
5555}
5556
5557ExpectedDecl ASTNodeImporter::VisitUsingPackDecl(UsingPackDecl *D) {
5558 DeclContext *DC, *LexicalDC;
5559 DeclarationName Name;
5560 SourceLocation Loc;
5561 NamedDecl *ToD = nullptr;
5562 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5563 return std::move(Err);
5564 if (ToD)
5565 return ToD;
5566
5567 auto ToInstantiatedFromUsingOrErr =
5568 Importer.Import(FromD: D->getInstantiatedFromUsingDecl());
5569 if (!ToInstantiatedFromUsingOrErr)
5570 return ToInstantiatedFromUsingOrErr.takeError();
5571 SmallVector<NamedDecl *, 4> Expansions(D->expansions().size());
5572 if (Error Err = ImportArrayChecked(InContainer: D->expansions(), Obegin: Expansions.begin()))
5573 return std::move(Err);
5574
5575 UsingPackDecl *ToUsingPack;
5576 if (GetImportedOrCreateDecl(ToD&: ToUsingPack, FromD: D, args&: Importer.getToContext(), args&: DC,
5577 args: cast<NamedDecl>(Val: *ToInstantiatedFromUsingOrErr),
5578 args&: Expansions))
5579 return ToUsingPack;
5580
5581 addDeclToContexts(FromD: D, ToD: ToUsingPack);
5582
5583 return ToUsingPack;
5584}
5585
5586ExpectedDecl ASTNodeImporter::VisitUnresolvedUsingValueDecl(
5587 UnresolvedUsingValueDecl *D) {
5588 DeclContext *DC, *LexicalDC;
5589 DeclarationName Name;
5590 SourceLocation Loc;
5591 NamedDecl *ToD = nullptr;
5592 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5593 return std::move(Err);
5594 if (ToD)
5595 return ToD;
5596
5597 Error Err = Error::success();
5598 auto ToLoc = importChecked(Err, From: D->getNameInfo().getLoc());
5599 auto ToUsingLoc = importChecked(Err, From: D->getUsingLoc());
5600 auto ToQualifierLoc = importChecked(Err, From: D->getQualifierLoc());
5601 auto ToEllipsisLoc = importChecked(Err, From: D->getEllipsisLoc());
5602 if (Err)
5603 return std::move(Err);
5604
5605 DeclarationNameInfo NameInfo(Name, ToLoc);
5606 if (Error Err = ImportDeclarationNameLoc(From: D->getNameInfo(), To&: NameInfo))
5607 return std::move(Err);
5608
5609 UnresolvedUsingValueDecl *ToUsingValue;
5610 if (GetImportedOrCreateDecl(ToD&: ToUsingValue, FromD: D, args&: Importer.getToContext(), args&: DC,
5611 args&: ToUsingLoc, args&: ToQualifierLoc, args&: NameInfo,
5612 args&: ToEllipsisLoc))
5613 return ToUsingValue;
5614
5615 ToUsingValue->setAccess(D->getAccess());
5616 ToUsingValue->setLexicalDeclContext(LexicalDC);
5617 LexicalDC->addDeclInternal(D: ToUsingValue);
5618
5619 return ToUsingValue;
5620}
5621
5622ExpectedDecl ASTNodeImporter::VisitUnresolvedUsingTypenameDecl(
5623 UnresolvedUsingTypenameDecl *D) {
5624 DeclContext *DC, *LexicalDC;
5625 DeclarationName Name;
5626 SourceLocation Loc;
5627 NamedDecl *ToD = nullptr;
5628 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5629 return std::move(Err);
5630 if (ToD)
5631 return ToD;
5632
5633 Error Err = Error::success();
5634 auto ToUsingLoc = importChecked(Err, From: D->getUsingLoc());
5635 auto ToTypenameLoc = importChecked(Err, From: D->getTypenameLoc());
5636 auto ToQualifierLoc = importChecked(Err, From: D->getQualifierLoc());
5637 auto ToEllipsisLoc = importChecked(Err, From: D->getEllipsisLoc());
5638 if (Err)
5639 return std::move(Err);
5640
5641 UnresolvedUsingTypenameDecl *ToUsing;
5642 if (GetImportedOrCreateDecl(ToD&: ToUsing, FromD: D, args&: Importer.getToContext(), args&: DC,
5643 args&: ToUsingLoc, args&: ToTypenameLoc,
5644 args&: ToQualifierLoc, args&: Loc, args&: Name, args&: ToEllipsisLoc))
5645 return ToUsing;
5646
5647 ToUsing->setAccess(D->getAccess());
5648 ToUsing->setLexicalDeclContext(LexicalDC);
5649 LexicalDC->addDeclInternal(D: ToUsing);
5650
5651 return ToUsing;
5652}
5653
5654ExpectedDecl ASTNodeImporter::VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D) {
5655 Decl* ToD = nullptr;
5656 switch (D->getBuiltinTemplateKind()) {
5657#define BuiltinTemplate(BTName) \
5658 case BuiltinTemplateKind::BTK##BTName: \
5659 ToD = Importer.getToContext().get##BTName##Decl(); \
5660 break;
5661#include "clang/Basic/BuiltinTemplates.inc"
5662 }
5663 assert(ToD && "BuiltinTemplateDecl of unsupported kind!");
5664 Importer.MapImported(From: D, To: ToD);
5665 return ToD;
5666}
5667
5668Error ASTNodeImporter::ImportDefinition(
5669 ObjCInterfaceDecl *From, ObjCInterfaceDecl *To, ImportDefinitionKind Kind) {
5670 if (To->getDefinition()) {
5671 // Check consistency of superclass.
5672 ObjCInterfaceDecl *FromSuper = From->getSuperClass();
5673 if (FromSuper) {
5674 if (auto FromSuperOrErr = import(From: FromSuper))
5675 FromSuper = *FromSuperOrErr;
5676 else
5677 return FromSuperOrErr.takeError();
5678 }
5679
5680 ObjCInterfaceDecl *ToSuper = To->getSuperClass();
5681 if ((bool)FromSuper != (bool)ToSuper ||
5682 (FromSuper && !declaresSameEntity(D1: FromSuper, D2: ToSuper))) {
5683 Importer.ToDiag(Loc: To->getLocation(),
5684 DiagID: diag::warn_odr_objc_superclass_inconsistent)
5685 << To->getDeclName();
5686 if (ToSuper)
5687 Importer.ToDiag(Loc: To->getSuperClassLoc(), DiagID: diag::note_odr_objc_superclass)
5688 << To->getSuperClass()->getDeclName();
5689 else
5690 Importer.ToDiag(Loc: To->getLocation(),
5691 DiagID: diag::note_odr_objc_missing_superclass);
5692 if (From->getSuperClass())
5693 Importer.FromDiag(Loc: From->getSuperClassLoc(),
5694 DiagID: diag::note_odr_objc_superclass)
5695 << From->getSuperClass()->getDeclName();
5696 else
5697 Importer.FromDiag(Loc: From->getLocation(),
5698 DiagID: diag::note_odr_objc_missing_superclass);
5699 }
5700
5701 if (shouldForceImportDeclContext(IDK: Kind))
5702 if (Error Err = ImportDeclContext(FromDC: From))
5703 return Err;
5704 return Error::success();
5705 }
5706
5707 // Start the definition.
5708 To->startDefinition();
5709
5710 // If this class has a superclass, import it.
5711 if (From->getSuperClass()) {
5712 if (auto SuperTInfoOrErr = import(From: From->getSuperClassTInfo()))
5713 To->setSuperClass(*SuperTInfoOrErr);
5714 else
5715 return SuperTInfoOrErr.takeError();
5716 }
5717
5718 // Import protocols
5719 SmallVector<ObjCProtocolDecl *, 4> Protocols;
5720 SmallVector<SourceLocation, 4> ProtocolLocs;
5721 ObjCInterfaceDecl::protocol_loc_iterator FromProtoLoc =
5722 From->protocol_loc_begin();
5723
5724 for (ObjCInterfaceDecl::protocol_iterator FromProto = From->protocol_begin(),
5725 FromProtoEnd = From->protocol_end();
5726 FromProto != FromProtoEnd;
5727 ++FromProto, ++FromProtoLoc) {
5728 if (Expected<ObjCProtocolDecl *> ToProtoOrErr = import(From: *FromProto))
5729 Protocols.push_back(Elt: *ToProtoOrErr);
5730 else
5731 return ToProtoOrErr.takeError();
5732
5733 if (ExpectedSLoc ToProtoLocOrErr = import(From: *FromProtoLoc))
5734 ProtocolLocs.push_back(Elt: *ToProtoLocOrErr);
5735 else
5736 return ToProtoLocOrErr.takeError();
5737
5738 }
5739
5740 // FIXME: If we're merging, make sure that the protocol list is the same.
5741 To->setProtocolList(List: Protocols.data(), Num: Protocols.size(),
5742 Locs: ProtocolLocs.data(), C&: Importer.getToContext());
5743
5744 // Import categories. When the categories themselves are imported, they'll
5745 // hook themselves into this interface.
5746 for (auto *Cat : From->known_categories()) {
5747 auto ToCatOrErr = import(From: Cat);
5748 if (!ToCatOrErr)
5749 return ToCatOrErr.takeError();
5750 }
5751
5752 // If we have an @implementation, import it as well.
5753 if (From->getImplementation()) {
5754 if (Expected<ObjCImplementationDecl *> ToImplOrErr =
5755 import(From: From->getImplementation()))
5756 To->setImplementation(*ToImplOrErr);
5757 else
5758 return ToImplOrErr.takeError();
5759 }
5760
5761 // Import all of the members of this class.
5762 if (Error Err = ImportDeclContext(FromDC: From, /*ForceImport=*/true))
5763 return Err;
5764
5765 return Error::success();
5766}
5767
5768Expected<ObjCTypeParamList *>
5769ASTNodeImporter::ImportObjCTypeParamList(ObjCTypeParamList *list) {
5770 if (!list)
5771 return nullptr;
5772
5773 SmallVector<ObjCTypeParamDecl *, 4> toTypeParams;
5774 for (auto *fromTypeParam : *list) {
5775 if (auto toTypeParamOrErr = import(From: fromTypeParam))
5776 toTypeParams.push_back(Elt: *toTypeParamOrErr);
5777 else
5778 return toTypeParamOrErr.takeError();
5779 }
5780
5781 auto LAngleLocOrErr = import(From: list->getLAngleLoc());
5782 if (!LAngleLocOrErr)
5783 return LAngleLocOrErr.takeError();
5784
5785 auto RAngleLocOrErr = import(From: list->getRAngleLoc());
5786 if (!RAngleLocOrErr)
5787 return RAngleLocOrErr.takeError();
5788
5789 return ObjCTypeParamList::create(ctx&: Importer.getToContext(),
5790 lAngleLoc: *LAngleLocOrErr,
5791 typeParams: toTypeParams,
5792 rAngleLoc: *RAngleLocOrErr);
5793}
5794
5795ExpectedDecl ASTNodeImporter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
5796 // If this class has a definition in the translation unit we're coming from,
5797 // but this particular declaration is not that definition, import the
5798 // definition and map to that.
5799 ObjCInterfaceDecl *Definition = D->getDefinition();
5800 if (Definition && Definition != D) {
5801 if (ExpectedDecl ImportedDefOrErr = import(From: Definition))
5802 return Importer.MapImported(From: D, To: *ImportedDefOrErr);
5803 else
5804 return ImportedDefOrErr.takeError();
5805 }
5806
5807 // Import the major distinguishing characteristics of an @interface.
5808 DeclContext *DC, *LexicalDC;
5809 DeclarationName Name;
5810 SourceLocation Loc;
5811 NamedDecl *ToD;
5812 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5813 return std::move(Err);
5814 if (ToD)
5815 return ToD;
5816
5817 // Look for an existing interface with the same name.
5818 ObjCInterfaceDecl *MergeWithIface = nullptr;
5819 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
5820 for (auto *FoundDecl : FoundDecls) {
5821 if (!FoundDecl->isInIdentifierNamespace(NS: Decl::IDNS_Ordinary))
5822 continue;
5823
5824 if ((MergeWithIface = dyn_cast<ObjCInterfaceDecl>(Val: FoundDecl)))
5825 break;
5826 }
5827
5828 // Create an interface declaration, if one does not already exist.
5829 ObjCInterfaceDecl *ToIface = MergeWithIface;
5830 if (!ToIface) {
5831 ExpectedSLoc AtBeginLocOrErr = import(From: D->getAtStartLoc());
5832 if (!AtBeginLocOrErr)
5833 return AtBeginLocOrErr.takeError();
5834
5835 if (GetImportedOrCreateDecl(
5836 ToD&: ToIface, FromD: D, args&: Importer.getToContext(), args&: DC,
5837 args&: *AtBeginLocOrErr, args: Name.getAsIdentifierInfo(),
5838 /*TypeParamList=*/args: nullptr,
5839 /*PrevDecl=*/args: nullptr, args&: Loc, args: D->isImplicitInterfaceDecl()))
5840 return ToIface;
5841 ToIface->setLexicalDeclContext(LexicalDC);
5842 LexicalDC->addDeclInternal(D: ToIface);
5843 }
5844 Importer.MapImported(From: D, To: ToIface);
5845 // Import the type parameter list after MapImported, to avoid
5846 // loops when bringing in their DeclContext.
5847 if (auto ToPListOrErr =
5848 ImportObjCTypeParamList(list: D->getTypeParamListAsWritten()))
5849 ToIface->setTypeParamList(*ToPListOrErr);
5850 else
5851 return ToPListOrErr.takeError();
5852
5853 if (D->isThisDeclarationADefinition())
5854 if (Error Err = ImportDefinition(From: D, To: ToIface))
5855 return std::move(Err);
5856
5857 return ToIface;
5858}
5859
5860ExpectedDecl
5861ASTNodeImporter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
5862 ObjCCategoryDecl *Category;
5863 if (Error Err = importInto(To&: Category, From: D->getCategoryDecl()))
5864 return std::move(Err);
5865
5866 ObjCCategoryImplDecl *ToImpl = Category->getImplementation();
5867 if (!ToImpl) {
5868 DeclContext *DC, *LexicalDC;
5869 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
5870 return std::move(Err);
5871
5872 Error Err = Error::success();
5873 auto ToLocation = importChecked(Err, From: D->getLocation());
5874 auto ToAtStartLoc = importChecked(Err, From: D->getAtStartLoc());
5875 auto ToCategoryNameLoc = importChecked(Err, From: D->getCategoryNameLoc());
5876 if (Err)
5877 return std::move(Err);
5878
5879 if (GetImportedOrCreateDecl(
5880 ToD&: ToImpl, FromD: D, args&: Importer.getToContext(), args&: DC,
5881 args: Importer.Import(FromId: D->getIdentifier()), args: Category->getClassInterface(),
5882 args&: ToLocation, args&: ToAtStartLoc, args&: ToCategoryNameLoc))
5883 return ToImpl;
5884
5885 ToImpl->setLexicalDeclContext(LexicalDC);
5886 LexicalDC->addDeclInternal(D: ToImpl);
5887 Category->setImplementation(ToImpl);
5888 }
5889
5890 Importer.MapImported(From: D, To: ToImpl);
5891 if (Error Err = ImportDeclContext(FromDC: D))
5892 return std::move(Err);
5893
5894 return ToImpl;
5895}
5896
5897ExpectedDecl
5898ASTNodeImporter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
5899 // Find the corresponding interface.
5900 ObjCInterfaceDecl *Iface;
5901 if (Error Err = importInto(To&: Iface, From: D->getClassInterface()))
5902 return std::move(Err);
5903
5904 // Import the superclass, if any.
5905 ObjCInterfaceDecl *Super;
5906 if (Error Err = importInto(To&: Super, From: D->getSuperClass()))
5907 return std::move(Err);
5908
5909 ObjCImplementationDecl *Impl = Iface->getImplementation();
5910 if (!Impl) {
5911 // We haven't imported an implementation yet. Create a new @implementation
5912 // now.
5913 DeclContext *DC, *LexicalDC;
5914 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
5915 return std::move(Err);
5916
5917 Error Err = Error::success();
5918 auto ToLocation = importChecked(Err, From: D->getLocation());
5919 auto ToAtStartLoc = importChecked(Err, From: D->getAtStartLoc());
5920 auto ToSuperClassLoc = importChecked(Err, From: D->getSuperClassLoc());
5921 auto ToIvarLBraceLoc = importChecked(Err, From: D->getIvarLBraceLoc());
5922 auto ToIvarRBraceLoc = importChecked(Err, From: D->getIvarRBraceLoc());
5923 if (Err)
5924 return std::move(Err);
5925
5926 if (GetImportedOrCreateDecl(ToD&: Impl, FromD: D, args&: Importer.getToContext(),
5927 args&: DC, args&: Iface, args&: Super,
5928 args&: ToLocation,
5929 args&: ToAtStartLoc,
5930 args&: ToSuperClassLoc,
5931 args&: ToIvarLBraceLoc,
5932 args&: ToIvarRBraceLoc))
5933 return Impl;
5934
5935 Impl->setLexicalDeclContext(LexicalDC);
5936
5937 // Associate the implementation with the class it implements.
5938 Iface->setImplementation(Impl);
5939 Importer.MapImported(From: D, To: Iface->getImplementation());
5940 } else {
5941 Importer.MapImported(From: D, To: Iface->getImplementation());
5942
5943 // Verify that the existing @implementation has the same superclass.
5944 if ((Super && !Impl->getSuperClass()) ||
5945 (!Super && Impl->getSuperClass()) ||
5946 (Super && Impl->getSuperClass() &&
5947 !declaresSameEntity(D1: Super->getCanonicalDecl(),
5948 D2: Impl->getSuperClass()))) {
5949 Importer.ToDiag(Loc: Impl->getLocation(),
5950 DiagID: diag::warn_odr_objc_superclass_inconsistent)
5951 << Iface->getDeclName();
5952 // FIXME: It would be nice to have the location of the superclass
5953 // below.
5954 if (Impl->getSuperClass())
5955 Importer.ToDiag(Loc: Impl->getLocation(),
5956 DiagID: diag::note_odr_objc_superclass)
5957 << Impl->getSuperClass()->getDeclName();
5958 else
5959 Importer.ToDiag(Loc: Impl->getLocation(),
5960 DiagID: diag::note_odr_objc_missing_superclass);
5961 if (D->getSuperClass())
5962 Importer.FromDiag(Loc: D->getLocation(),
5963 DiagID: diag::note_odr_objc_superclass)
5964 << D->getSuperClass()->getDeclName();
5965 else
5966 Importer.FromDiag(Loc: D->getLocation(),
5967 DiagID: diag::note_odr_objc_missing_superclass);
5968
5969 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
5970 }
5971 }
5972
5973 // Import all of the members of this @implementation.
5974 if (Error Err = ImportDeclContext(FromDC: D))
5975 return std::move(Err);
5976
5977 return Impl;
5978}
5979
5980ExpectedDecl ASTNodeImporter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
5981 // Import the major distinguishing characteristics of an @property.
5982 DeclContext *DC, *LexicalDC;
5983 DeclarationName Name;
5984 SourceLocation Loc;
5985 NamedDecl *ToD;
5986 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
5987 return std::move(Err);
5988 if (ToD)
5989 return ToD;
5990
5991 // Check whether we have already imported this property.
5992 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
5993 for (auto *FoundDecl : FoundDecls) {
5994 if (auto *FoundProp = dyn_cast<ObjCPropertyDecl>(Val: FoundDecl)) {
5995 // Instance and class properties can share the same name but are different
5996 // declarations.
5997 if (FoundProp->isInstanceProperty() != D->isInstanceProperty())
5998 continue;
5999
6000 // Check property types.
6001 if (!Importer.IsStructurallyEquivalent(From: D->getType(),
6002 To: FoundProp->getType())) {
6003 Importer.ToDiag(Loc, DiagID: diag::warn_odr_objc_property_type_inconsistent)
6004 << Name << D->getType() << FoundProp->getType();
6005 Importer.ToDiag(Loc: FoundProp->getLocation(), DiagID: diag::note_odr_value_here)
6006 << FoundProp->getType();
6007
6008 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
6009 }
6010
6011 // FIXME: Check property attributes, getters, setters, etc.?
6012
6013 // Consider these properties to be equivalent.
6014 Importer.MapImported(From: D, To: FoundProp);
6015 return FoundProp;
6016 }
6017 }
6018
6019 Error Err = Error::success();
6020 auto ToType = importChecked(Err, From: D->getType());
6021 auto ToTypeSourceInfo = importChecked(Err, From: D->getTypeSourceInfo());
6022 auto ToAtLoc = importChecked(Err, From: D->getAtLoc());
6023 auto ToLParenLoc = importChecked(Err, From: D->getLParenLoc());
6024 if (Err)
6025 return std::move(Err);
6026
6027 // Create the new property.
6028 ObjCPropertyDecl *ToProperty;
6029 if (GetImportedOrCreateDecl(
6030 ToD&: ToProperty, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc,
6031 args: Name.getAsIdentifierInfo(), args&: ToAtLoc,
6032 args&: ToLParenLoc, args&: ToType,
6033 args&: ToTypeSourceInfo, args: D->getPropertyImplementation()))
6034 return ToProperty;
6035
6036 auto ToGetterName = importChecked(Err, From: D->getGetterName());
6037 auto ToSetterName = importChecked(Err, From: D->getSetterName());
6038 auto ToGetterNameLoc = importChecked(Err, From: D->getGetterNameLoc());
6039 auto ToSetterNameLoc = importChecked(Err, From: D->getSetterNameLoc());
6040 auto ToGetterMethodDecl = importChecked(Err, From: D->getGetterMethodDecl());
6041 auto ToSetterMethodDecl = importChecked(Err, From: D->getSetterMethodDecl());
6042 auto ToPropertyIvarDecl = importChecked(Err, From: D->getPropertyIvarDecl());
6043 if (Err)
6044 return std::move(Err);
6045
6046 ToProperty->setLexicalDeclContext(LexicalDC);
6047 LexicalDC->addDeclInternal(D: ToProperty);
6048
6049 ToProperty->setPropertyAttributes(D->getPropertyAttributes());
6050 ToProperty->setPropertyAttributesAsWritten(
6051 D->getPropertyAttributesAsWritten());
6052 ToProperty->setGetterName(Sel: ToGetterName, Loc: ToGetterNameLoc);
6053 ToProperty->setSetterName(Sel: ToSetterName, Loc: ToSetterNameLoc);
6054 ToProperty->setGetterMethodDecl(ToGetterMethodDecl);
6055 ToProperty->setSetterMethodDecl(ToSetterMethodDecl);
6056 ToProperty->setPropertyIvarDecl(ToPropertyIvarDecl);
6057 return ToProperty;
6058}
6059
6060ExpectedDecl
6061ASTNodeImporter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
6062 ObjCPropertyDecl *Property;
6063 if (Error Err = importInto(To&: Property, From: D->getPropertyDecl()))
6064 return std::move(Err);
6065
6066 DeclContext *DC, *LexicalDC;
6067 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
6068 return std::move(Err);
6069
6070 auto *InImpl = cast<ObjCImplDecl>(Val: LexicalDC);
6071
6072 // Import the ivar (for an @synthesize).
6073 ObjCIvarDecl *Ivar = nullptr;
6074 if (Error Err = importInto(To&: Ivar, From: D->getPropertyIvarDecl()))
6075 return std::move(Err);
6076
6077 ObjCPropertyImplDecl *ToImpl
6078 = InImpl->FindPropertyImplDecl(propertyId: Property->getIdentifier(),
6079 queryKind: Property->getQueryKind());
6080 if (!ToImpl) {
6081
6082 Error Err = Error::success();
6083 auto ToBeginLoc = importChecked(Err, From: D->getBeginLoc());
6084 auto ToLocation = importChecked(Err, From: D->getLocation());
6085 auto ToPropertyIvarDeclLoc =
6086 importChecked(Err, From: D->getPropertyIvarDeclLoc());
6087 if (Err)
6088 return std::move(Err);
6089
6090 if (GetImportedOrCreateDecl(ToD&: ToImpl, FromD: D, args&: Importer.getToContext(), args&: DC,
6091 args&: ToBeginLoc,
6092 args&: ToLocation, args&: Property,
6093 args: D->getPropertyImplementation(), args&: Ivar,
6094 args&: ToPropertyIvarDeclLoc))
6095 return ToImpl;
6096
6097 ToImpl->setLexicalDeclContext(LexicalDC);
6098 LexicalDC->addDeclInternal(D: ToImpl);
6099 } else {
6100 // Check that we have the same kind of property implementation (@synthesize
6101 // vs. @dynamic).
6102 if (D->getPropertyImplementation() != ToImpl->getPropertyImplementation()) {
6103 Importer.ToDiag(Loc: ToImpl->getLocation(),
6104 DiagID: diag::warn_odr_objc_property_impl_kind_inconsistent)
6105 << Property->getDeclName()
6106 << (ToImpl->getPropertyImplementation()
6107 == ObjCPropertyImplDecl::Dynamic);
6108 Importer.FromDiag(Loc: D->getLocation(),
6109 DiagID: diag::note_odr_objc_property_impl_kind)
6110 << D->getPropertyDecl()->getDeclName()
6111 << (D->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic);
6112
6113 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
6114 }
6115
6116 // For @synthesize, check that we have the same
6117 if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize &&
6118 Ivar != ToImpl->getPropertyIvarDecl()) {
6119 Importer.ToDiag(Loc: ToImpl->getPropertyIvarDeclLoc(),
6120 DiagID: diag::warn_odr_objc_synthesize_ivar_inconsistent)
6121 << Property->getDeclName()
6122 << ToImpl->getPropertyIvarDecl()->getDeclName()
6123 << Ivar->getDeclName();
6124 Importer.FromDiag(Loc: D->getPropertyIvarDeclLoc(),
6125 DiagID: diag::note_odr_objc_synthesize_ivar_here)
6126 << D->getPropertyIvarDecl()->getDeclName();
6127
6128 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
6129 }
6130
6131 // Merge the existing implementation with the new implementation.
6132 Importer.MapImported(From: D, To: ToImpl);
6133 }
6134
6135 return ToImpl;
6136}
6137
6138ExpectedDecl
6139ASTNodeImporter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
6140 // For template arguments, we adopt the translation unit as our declaration
6141 // context. This context will be fixed when (during) the actual template
6142 // declaration is created.
6143
6144 ExpectedSLoc BeginLocOrErr = import(From: D->getBeginLoc());
6145 if (!BeginLocOrErr)
6146 return BeginLocOrErr.takeError();
6147
6148 ExpectedSLoc LocationOrErr = import(From: D->getLocation());
6149 if (!LocationOrErr)
6150 return LocationOrErr.takeError();
6151
6152 TemplateTypeParmDecl *ToD = nullptr;
6153 if (GetImportedOrCreateDecl(
6154 ToD, FromD: D, args&: Importer.getToContext(),
6155 args: Importer.getToContext().getTranslationUnitDecl(),
6156 args&: *BeginLocOrErr, args&: *LocationOrErr,
6157 args: D->getDepth(), args: D->getIndex(), args: Importer.Import(FromId: D->getIdentifier()),
6158 args: D->wasDeclaredWithTypename(), args: D->isParameterPack(),
6159 args: D->hasTypeConstraint()))
6160 return ToD;
6161
6162 // Import the type-constraint
6163 if (const TypeConstraint *TC = D->getTypeConstraint()) {
6164
6165 Error Err = Error::success();
6166 auto ToConceptRef = importChecked(Err, From: TC->getConceptReference());
6167 auto ToIDC = importChecked(Err, From: TC->getImmediatelyDeclaredConstraint());
6168 if (Err)
6169 return std::move(Err);
6170
6171 ToD->setTypeConstraint(CR: ToConceptRef, ImmediatelyDeclaredConstraint: ToIDC, ArgPackSubstIndex: TC->getArgPackSubstIndex());
6172 }
6173
6174 if (Error Err = importTemplateParameterDefaultArgument(D, ToD))
6175 return Err;
6176
6177 return ToD;
6178}
6179
6180ExpectedDecl
6181ASTNodeImporter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
6182
6183 Error Err = Error::success();
6184 auto ToDeclName = importChecked(Err, From: D->getDeclName());
6185 auto ToLocation = importChecked(Err, From: D->getLocation());
6186 auto ToType = importChecked(Err, From: D->getType());
6187 auto ToTypeSourceInfo = importChecked(Err, From: D->getTypeSourceInfo());
6188 auto ToInnerLocStart = importChecked(Err, From: D->getInnerLocStart());
6189 if (Err)
6190 return std::move(Err);
6191
6192 NonTypeTemplateParmDecl *ToD = nullptr;
6193 if (GetImportedOrCreateDecl(ToD, FromD: D, args&: Importer.getToContext(),
6194 args: Importer.getToContext().getTranslationUnitDecl(),
6195 args&: ToInnerLocStart, args&: ToLocation, args: D->getDepth(),
6196 args: D->getPosition(),
6197 args: ToDeclName.getAsIdentifierInfo(), args&: ToType,
6198 args: D->isParameterPack(), args&: ToTypeSourceInfo))
6199 return ToD;
6200
6201 Err = importTemplateParameterDefaultArgument(D, ToD);
6202 if (Err)
6203 return Err;
6204
6205 return ToD;
6206}
6207
6208ExpectedDecl
6209ASTNodeImporter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
6210 bool IsCanonical = false;
6211 if (auto *CanonD = Importer.getFromContext()
6212 .findCanonicalTemplateTemplateParmDeclInternal(TTP: D);
6213 CanonD == D)
6214 IsCanonical = true;
6215
6216 // Import the name of this declaration.
6217 auto NameOrErr = import(From: D->getDeclName());
6218 if (!NameOrErr)
6219 return NameOrErr.takeError();
6220
6221 // Import the location of this declaration.
6222 ExpectedSLoc LocationOrErr = import(From: D->getLocation());
6223 if (!LocationOrErr)
6224 return LocationOrErr.takeError();
6225
6226 // Import template parameters.
6227 auto TemplateParamsOrErr = import(From: D->getTemplateParameters());
6228 if (!TemplateParamsOrErr)
6229 return TemplateParamsOrErr.takeError();
6230
6231 TemplateTemplateParmDecl *ToD = nullptr;
6232 if (GetImportedOrCreateDecl(
6233 ToD, FromD: D, args&: Importer.getToContext(),
6234 args: Importer.getToContext().getTranslationUnitDecl(), args&: *LocationOrErr,
6235 args: D->getDepth(), args: D->getPosition(), args: D->isParameterPack(),
6236 args: (*NameOrErr).getAsIdentifierInfo(), args: D->templateParameterKind(),
6237 args: D->wasDeclaredWithTypename(), args&: *TemplateParamsOrErr))
6238 return ToD;
6239
6240 if (Error Err = importTemplateParameterDefaultArgument(D, ToD))
6241 return Err;
6242
6243 if (IsCanonical)
6244 return Importer.getToContext()
6245 .insertCanonicalTemplateTemplateParmDeclInternal(CanonTTP: ToD);
6246
6247 return ToD;
6248}
6249
6250// Returns the definition for a (forward) declaration of a TemplateDecl, if
6251// it has any definition in the redecl chain.
6252template <typename T> static auto getTemplateDefinition(T *D) -> T * {
6253 assert(D->getTemplatedDecl() && "Should be called on templates only");
6254 auto *ToTemplatedDef = D->getTemplatedDecl()->getDefinition();
6255 if (!ToTemplatedDef)
6256 return nullptr;
6257 auto *TemplateWithDef = ToTemplatedDef->getDescribedTemplate();
6258 return cast_or_null<T>(TemplateWithDef);
6259}
6260
6261ExpectedDecl ASTNodeImporter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
6262
6263 // Import the major distinguishing characteristics of this class template.
6264 DeclContext *DC, *LexicalDC;
6265 DeclarationName Name;
6266 SourceLocation Loc;
6267 NamedDecl *ToD;
6268 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
6269 return std::move(Err);
6270 if (ToD)
6271 return ToD;
6272
6273 // Should check if a declaration is friend in a dependent context.
6274 // Such templates are not linked together in a declaration chain.
6275 // The ASTImporter strategy is to map existing forward declarations to
6276 // imported ones only if strictly necessary, otherwise import these as new
6277 // forward declarations. In case of the "dependent friend" declarations, new
6278 // declarations are created, but not linked in a declaration chain.
6279 auto IsDependentFriend = [](ClassTemplateDecl *TD) {
6280 return TD->getFriendObjectKind() != Decl::FOK_None &&
6281 TD->getLexicalDeclContext()->isDependentContext();
6282 };
6283 bool DependentFriend = IsDependentFriend(D);
6284
6285 ClassTemplateDecl *FoundByLookup = nullptr;
6286
6287 // We may already have a template of the same name; try to find and match it.
6288 if (!DC->isFunctionOrMethod()) {
6289 SmallVector<NamedDecl *, 4> ConflictingDecls;
6290 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
6291 for (auto *FoundDecl : FoundDecls) {
6292 if (!FoundDecl->isInIdentifierNamespace(NS: Decl::IDNS_Ordinary |
6293 Decl::IDNS_TagFriend))
6294 continue;
6295
6296 auto *FoundTemplate = dyn_cast<ClassTemplateDecl>(Val: FoundDecl);
6297 if (FoundTemplate) {
6298 if (!hasSameVisibilityContextAndLinkage(Found: FoundTemplate, From: D))
6299 continue;
6300
6301 // FIXME: sufficient condition for 'IgnoreTemplateParmDepth'?
6302 bool IgnoreTemplateParmDepth =
6303 (FoundTemplate->getFriendObjectKind() != Decl::FOK_None) !=
6304 (D->getFriendObjectKind() != Decl::FOK_None);
6305 if (IsStructuralMatch(From: D, To: FoundTemplate, /*Complain=*/true,
6306 IgnoreTemplateParmDepth)) {
6307 if (DependentFriend || IsDependentFriend(FoundTemplate))
6308 continue;
6309
6310 ClassTemplateDecl *TemplateWithDef =
6311 getTemplateDefinition(D: FoundTemplate);
6312 if (D->isThisDeclarationADefinition() && TemplateWithDef)
6313 return Importer.MapImported(From: D, To: TemplateWithDef);
6314 if (!FoundByLookup)
6315 FoundByLookup = FoundTemplate;
6316 // Search in all matches because there may be multiple decl chains,
6317 // see ASTTests test ImportExistingFriendClassTemplateDef.
6318 continue;
6319 }
6320 // When importing a friend, it is possible that multiple declarations
6321 // with same name can co-exist in specific cases (if a template contains
6322 // a friend template and has a specialization). For this case the
6323 // declarations should match, except that the "template depth" is
6324 // different. No linking of previous declaration is needed in this case.
6325 // FIXME: This condition may need refinement.
6326 if (D->getFriendObjectKind() != Decl::FOK_None &&
6327 FoundTemplate->getFriendObjectKind() != Decl::FOK_None &&
6328 D->getFriendObjectKind() != FoundTemplate->getFriendObjectKind() &&
6329 IsStructuralMatch(From: D, To: FoundTemplate, /*Complain=*/false,
6330 /*IgnoreTemplateParmDepth=*/true))
6331 continue;
6332
6333 ConflictingDecls.push_back(Elt: FoundDecl);
6334 }
6335 }
6336
6337 if (!ConflictingDecls.empty()) {
6338 ExpectedName NameOrErr = Importer.HandleNameConflict(
6339 Name, DC, IDNS: Decl::IDNS_Ordinary, Decls: ConflictingDecls.data(),
6340 NumDecls: ConflictingDecls.size());
6341 if (NameOrErr)
6342 Name = NameOrErr.get();
6343 else
6344 return NameOrErr.takeError();
6345 }
6346 }
6347
6348 CXXRecordDecl *FromTemplated = D->getTemplatedDecl();
6349
6350 auto TemplateParamsOrErr = import(From: D->getTemplateParameters());
6351 if (!TemplateParamsOrErr)
6352 return TemplateParamsOrErr.takeError();
6353
6354 // Create the declaration that is being templated.
6355 CXXRecordDecl *ToTemplated;
6356 if (Error Err = importInto(To&: ToTemplated, From: FromTemplated))
6357 return std::move(Err);
6358
6359 // Create the class template declaration itself.
6360 ClassTemplateDecl *D2;
6361 if (GetImportedOrCreateDecl(ToD&: D2, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc, args&: Name,
6362 args&: *TemplateParamsOrErr, args&: ToTemplated))
6363 return D2;
6364
6365 ToTemplated->setDescribedClassTemplate(D2);
6366
6367 D2->setAccess(D->getAccess());
6368 D2->setLexicalDeclContext(LexicalDC);
6369
6370 addDeclToContexts(FromD: D, ToD: D2);
6371 updateLookupTableForTemplateParameters(Params&: **TemplateParamsOrErr);
6372
6373 if (FoundByLookup) {
6374 auto *Recent =
6375 const_cast<ClassTemplateDecl *>(FoundByLookup->getMostRecentDecl());
6376
6377 // It is possible that during the import of the class template definition
6378 // we start the import of a fwd friend decl of the very same class template
6379 // and we add the fwd friend decl to the lookup table. But the ToTemplated
6380 // had been created earlier and by that time the lookup could not find
6381 // anything existing, so it has no previous decl. Later, (still during the
6382 // import of the fwd friend decl) we start to import the definition again
6383 // and this time the lookup finds the previous fwd friend class template.
6384 // In this case we must set up the previous decl for the templated decl.
6385 if (!ToTemplated->getPreviousDecl()) {
6386 assert(FoundByLookup->getTemplatedDecl() &&
6387 "Found decl must have its templated decl set");
6388 CXXRecordDecl *PrevTemplated =
6389 FoundByLookup->getTemplatedDecl()->getMostRecentDecl();
6390 if (ToTemplated != PrevTemplated)
6391 ToTemplated->setPreviousDecl(PrevTemplated);
6392 }
6393
6394 D2->setPreviousDecl(Recent);
6395 }
6396
6397 return D2;
6398}
6399
6400ExpectedDecl ASTNodeImporter::VisitClassTemplateSpecializationDecl(
6401 ClassTemplateSpecializationDecl *D) {
6402 ClassTemplateDecl *ClassTemplate;
6403 if (Error Err = importInto(To&: ClassTemplate, From: D->getSpecializedTemplate()))
6404 return std::move(Err);
6405
6406 // Import the context of this declaration.
6407 DeclContext *DC, *LexicalDC;
6408 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
6409 return std::move(Err);
6410
6411 // Import template arguments.
6412 SmallVector<TemplateArgument, 2> TemplateArgs;
6413 if (Error Err =
6414 ImportTemplateArguments(FromArgs: D->getTemplateArgs().asArray(), ToArgs&: TemplateArgs))
6415 return std::move(Err);
6416 // Try to find an existing specialization with these template arguments and
6417 // template parameter list.
6418 void *InsertPos = nullptr;
6419 ClassTemplateSpecializationDecl *PrevDecl = nullptr;
6420 ClassTemplatePartialSpecializationDecl *PartialSpec =
6421 dyn_cast<ClassTemplatePartialSpecializationDecl>(Val: D);
6422
6423 // Import template parameters.
6424 TemplateParameterList *ToTPList = nullptr;
6425
6426 if (PartialSpec) {
6427 auto ToTPListOrErr = import(From: PartialSpec->getTemplateParameters());
6428 if (!ToTPListOrErr)
6429 return ToTPListOrErr.takeError();
6430 ToTPList = *ToTPListOrErr;
6431 PrevDecl = ClassTemplate->findPartialSpecialization(Args: TemplateArgs,
6432 TPL: *ToTPListOrErr,
6433 InsertPos);
6434 } else
6435 PrevDecl = ClassTemplate->findSpecialization(Args: TemplateArgs, InsertPos);
6436
6437 if (PrevDecl) {
6438 if (IsStructuralMatch(From: D, To: PrevDecl)) {
6439 CXXRecordDecl *PrevDefinition = PrevDecl->getDefinition();
6440 if (D->isThisDeclarationADefinition() && PrevDefinition) {
6441 Importer.MapImported(From: D, To: PrevDefinition);
6442 // Import those default field initializers which have been
6443 // instantiated in the "From" context, but not in the "To" context.
6444 for (auto *FromField : D->fields()) {
6445 auto ToOrErr = import(From: FromField);
6446 if (!ToOrErr)
6447 return ToOrErr.takeError();
6448 }
6449
6450 // Import those methods which have been instantiated in the
6451 // "From" context, but not in the "To" context.
6452 for (CXXMethodDecl *FromM : D->methods()) {
6453 auto ToOrErr = import(From: FromM);
6454 if (!ToOrErr)
6455 return ToOrErr.takeError();
6456 }
6457
6458 // TODO Import instantiated default arguments.
6459 // TODO Import instantiated exception specifications.
6460 //
6461 // Generally, ASTCommon.h/DeclUpdateKind enum gives a very good hint
6462 // what else could be fused during an AST merge.
6463 return PrevDefinition;
6464 }
6465 } else { // ODR violation.
6466 // FIXME HandleNameConflict
6467 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
6468 }
6469 }
6470
6471 // Import the location of this declaration.
6472 ExpectedSLoc BeginLocOrErr = import(From: D->getBeginLoc());
6473 if (!BeginLocOrErr)
6474 return BeginLocOrErr.takeError();
6475 ExpectedSLoc IdLocOrErr = import(From: D->getLocation());
6476 if (!IdLocOrErr)
6477 return IdLocOrErr.takeError();
6478
6479 // Import TemplateArgumentListInfo.
6480 TemplateArgumentListInfo ToTAInfo;
6481 if (const auto *ASTTemplateArgs = D->getTemplateArgsAsWritten()) {
6482 if (Error Err = ImportTemplateArgumentListInfo(From: *ASTTemplateArgs, Result&: ToTAInfo))
6483 return std::move(Err);
6484 }
6485
6486 // Create the specialization.
6487 ClassTemplateSpecializationDecl *D2 = nullptr;
6488 if (PartialSpec) {
6489 if (GetImportedOrCreateDecl<ClassTemplatePartialSpecializationDecl>(
6490 ToD&: D2, FromD: D, args&: Importer.getToContext(), args: D->getTagKind(), args&: DC, args&: *BeginLocOrErr,
6491 args&: *IdLocOrErr, args&: ToTPList, args&: ClassTemplate, args: ArrayRef(TemplateArgs),
6492 /*CanonInjectedTST=*/args: CanQualType(),
6493 args: cast_or_null<ClassTemplatePartialSpecializationDecl>(Val: PrevDecl)))
6494 return D2;
6495
6496 // Update InsertPos, because preceding import calls may have invalidated
6497 // it by adding new specializations.
6498 auto *PartSpec2 = cast<ClassTemplatePartialSpecializationDecl>(Val: D2);
6499 if (!ClassTemplate->findPartialSpecialization(Args: TemplateArgs, TPL: ToTPList,
6500 InsertPos))
6501 // Add this partial specialization to the class template.
6502 ClassTemplate->AddPartialSpecialization(D: PartSpec2, InsertPos);
6503 if (Expected<ClassTemplatePartialSpecializationDecl *> ToInstOrErr =
6504 import(From: PartialSpec->getInstantiatedFromMember()))
6505 PartSpec2->setInstantiatedFromMember(*ToInstOrErr);
6506 else
6507 return ToInstOrErr.takeError();
6508
6509 updateLookupTableForTemplateParameters(Params&: *ToTPList);
6510 } else { // Not a partial specialization.
6511 if (GetImportedOrCreateDecl(ToD&: D2, FromD: D, args&: Importer.getToContext(), args: D->getTagKind(),
6512 args&: DC, args&: *BeginLocOrErr, args&: *IdLocOrErr, args&: ClassTemplate,
6513 args&: TemplateArgs, args: D->hasStrictPackMatch(),
6514 args&: PrevDecl))
6515 return D2;
6516
6517 // Update InsertPos, because preceding import calls may have invalidated
6518 // it by adding new specializations.
6519 if (!ClassTemplate->findSpecialization(Args: TemplateArgs, InsertPos))
6520 // Add this specialization to the class template.
6521 ClassTemplate->AddSpecialization(D: D2, InsertPos);
6522 }
6523
6524 D2->setSpecializationKind(D->getSpecializationKind());
6525
6526 // Set the context of this specialization/instantiation.
6527 D2->setLexicalDeclContext(LexicalDC);
6528
6529 // Add to the DC only if it was an explicit specialization/instantiation.
6530 if (D2->isExplicitInstantiationOrSpecialization()) {
6531 LexicalDC->addDeclInternal(D: D2);
6532 }
6533
6534 if (auto BraceRangeOrErr = import(From: D->getBraceRange()))
6535 D2->setBraceRange(*BraceRangeOrErr);
6536 else
6537 return BraceRangeOrErr.takeError();
6538
6539 if (Error Err = ImportTemplateParameterLists(FromD: D, ToD: D2))
6540 return std::move(Err);
6541
6542 // Import the qualifier, if any.
6543 if (auto LocOrErr = import(From: D->getQualifierLoc()))
6544 D2->setQualifierInfo(*LocOrErr);
6545 else
6546 return LocOrErr.takeError();
6547
6548 if (D->getTemplateArgsAsWritten())
6549 D2->setTemplateArgsAsWritten(ToTAInfo);
6550
6551 if (auto LocOrErr = import(From: D->getTemplateKeywordLoc()))
6552 D2->setTemplateKeywordLoc(*LocOrErr);
6553 else
6554 return LocOrErr.takeError();
6555
6556 if (auto LocOrErr = import(From: D->getExternKeywordLoc()))
6557 D2->setExternKeywordLoc(*LocOrErr);
6558 else
6559 return LocOrErr.takeError();
6560
6561 if (D->getPointOfInstantiation().isValid()) {
6562 if (auto POIOrErr = import(From: D->getPointOfInstantiation()))
6563 D2->setPointOfInstantiation(*POIOrErr);
6564 else
6565 return POIOrErr.takeError();
6566 }
6567
6568 D2->setTemplateSpecializationKind(D->getTemplateSpecializationKind());
6569
6570 if (auto P = D->getInstantiatedFrom()) {
6571 if (auto *CTD = dyn_cast<ClassTemplateDecl *>(Val&: P)) {
6572 if (auto CTDorErr = import(From: CTD))
6573 D2->setInstantiationOf(*CTDorErr);
6574 } else {
6575 auto *CTPSD = cast<ClassTemplatePartialSpecializationDecl *>(Val&: P);
6576 auto CTPSDOrErr = import(From: CTPSD);
6577 if (!CTPSDOrErr)
6578 return CTPSDOrErr.takeError();
6579 const TemplateArgumentList &DArgs = D->getTemplateInstantiationArgs();
6580 SmallVector<TemplateArgument, 2> D2ArgsVec(DArgs.size());
6581 for (unsigned I = 0; I < DArgs.size(); ++I) {
6582 const TemplateArgument &DArg = DArgs[I];
6583 if (auto ArgOrErr = import(From: DArg))
6584 D2ArgsVec[I] = *ArgOrErr;
6585 else
6586 return ArgOrErr.takeError();
6587 }
6588 D2->setInstantiationOf(
6589 PartialSpec: *CTPSDOrErr,
6590 TemplateArgs: TemplateArgumentList::CreateCopy(Context&: Importer.getToContext(), Args: D2ArgsVec));
6591 }
6592 }
6593
6594 if (D->isCompleteDefinition())
6595 if (Error Err = ImportDefinition(From: D, To: D2))
6596 return std::move(Err);
6597
6598 return D2;
6599}
6600
6601ExpectedDecl ASTNodeImporter::VisitVarTemplateDecl(VarTemplateDecl *D) {
6602 // Import the major distinguishing characteristics of this variable template.
6603 DeclContext *DC, *LexicalDC;
6604 DeclarationName Name;
6605 SourceLocation Loc;
6606 NamedDecl *ToD;
6607 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
6608 return std::move(Err);
6609 if (ToD)
6610 return ToD;
6611
6612 // We may already have a template of the same name; try to find and match it.
6613 assert(!DC->isFunctionOrMethod() &&
6614 "Variable templates cannot be declared at function scope");
6615
6616 SmallVector<NamedDecl *, 4> ConflictingDecls;
6617 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
6618 VarTemplateDecl *FoundByLookup = nullptr;
6619 for (auto *FoundDecl : FoundDecls) {
6620 if (!FoundDecl->isInIdentifierNamespace(NS: Decl::IDNS_Ordinary))
6621 continue;
6622
6623 if (VarTemplateDecl *FoundTemplate = dyn_cast<VarTemplateDecl>(Val: FoundDecl)) {
6624 // Use the templated decl, some linkage flags are set only there.
6625 if (!hasSameVisibilityContextAndLinkage(Found: FoundTemplate->getTemplatedDecl(),
6626 From: D->getTemplatedDecl()))
6627 continue;
6628 if (IsStructuralMatch(From: D, To: FoundTemplate)) {
6629 // FIXME Check for ODR error if the two definitions have
6630 // different initializers?
6631 VarTemplateDecl *FoundDef = getTemplateDefinition(D: FoundTemplate);
6632 if (D->getDeclContext()->isRecord()) {
6633 assert(FoundTemplate->getDeclContext()->isRecord() &&
6634 "Member variable template imported as non-member, "
6635 "inconsistent imported AST?");
6636 if (FoundDef)
6637 return Importer.MapImported(From: D, To: FoundDef);
6638 if (!D->isThisDeclarationADefinition())
6639 return Importer.MapImported(From: D, To: FoundTemplate);
6640 } else {
6641 if (FoundDef && D->isThisDeclarationADefinition())
6642 return Importer.MapImported(From: D, To: FoundDef);
6643 }
6644 FoundByLookup = FoundTemplate;
6645 break;
6646 }
6647 ConflictingDecls.push_back(Elt: FoundDecl);
6648 }
6649 }
6650
6651 if (!ConflictingDecls.empty()) {
6652 ExpectedName NameOrErr = Importer.HandleNameConflict(
6653 Name, DC, IDNS: Decl::IDNS_Ordinary, Decls: ConflictingDecls.data(),
6654 NumDecls: ConflictingDecls.size());
6655 if (NameOrErr)
6656 Name = NameOrErr.get();
6657 else
6658 return NameOrErr.takeError();
6659 }
6660
6661 VarDecl *DTemplated = D->getTemplatedDecl();
6662
6663 // Import the type.
6664 // FIXME: Value not used?
6665 ExpectedType TypeOrErr = import(From: DTemplated->getType());
6666 if (!TypeOrErr)
6667 return TypeOrErr.takeError();
6668
6669 // Create the declaration that is being templated.
6670 VarDecl *ToTemplated;
6671 if (Error Err = importInto(To&: ToTemplated, From: DTemplated))
6672 return std::move(Err);
6673
6674 // Create the variable template declaration itself.
6675 auto TemplateParamsOrErr = import(From: D->getTemplateParameters());
6676 if (!TemplateParamsOrErr)
6677 return TemplateParamsOrErr.takeError();
6678
6679 VarTemplateDecl *ToVarTD;
6680 if (GetImportedOrCreateDecl(ToD&: ToVarTD, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc,
6681 args&: Name, args&: *TemplateParamsOrErr, args&: ToTemplated))
6682 return ToVarTD;
6683
6684 ToTemplated->setDescribedVarTemplate(ToVarTD);
6685
6686 ToVarTD->setAccess(D->getAccess());
6687 ToVarTD->setLexicalDeclContext(LexicalDC);
6688 LexicalDC->addDeclInternal(D: ToVarTD);
6689 if (DC != Importer.getToContext().getTranslationUnitDecl())
6690 updateLookupTableForTemplateParameters(Params&: **TemplateParamsOrErr);
6691
6692 if (FoundByLookup) {
6693 auto *Recent =
6694 const_cast<VarTemplateDecl *>(FoundByLookup->getMostRecentDecl());
6695 if (!ToTemplated->getPreviousDecl()) {
6696 auto *PrevTemplated =
6697 FoundByLookup->getTemplatedDecl()->getMostRecentDecl();
6698 if (ToTemplated != PrevTemplated)
6699 ToTemplated->setPreviousDecl(PrevTemplated);
6700 }
6701 ToVarTD->setPreviousDecl(Recent);
6702 }
6703
6704 return ToVarTD;
6705}
6706
6707ExpectedDecl ASTNodeImporter::VisitVarTemplateSpecializationDecl(
6708 VarTemplateSpecializationDecl *D) {
6709 // A VarTemplateSpecializationDecl inherits from VarDecl, the import is done
6710 // in an analog way (but specialized for this case).
6711
6712 SmallVector<Decl *, 2> Redecls = getCanonicalForwardRedeclChain(D);
6713 auto RedeclIt = Redecls.begin();
6714 // Import the first part of the decl chain. I.e. import all previous
6715 // declarations starting from the canonical decl.
6716 for (; RedeclIt != Redecls.end() && *RedeclIt != D; ++RedeclIt) {
6717 ExpectedDecl RedeclOrErr = import(From: *RedeclIt);
6718 if (!RedeclOrErr)
6719 return RedeclOrErr.takeError();
6720 }
6721 assert(*RedeclIt == D);
6722
6723 VarTemplateDecl *VarTemplate = nullptr;
6724 if (Error Err = importInto(To&: VarTemplate, From: D->getSpecializedTemplate()))
6725 return std::move(Err);
6726
6727 // Import the context of this declaration.
6728 DeclContext *DC, *LexicalDC;
6729 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
6730 return std::move(Err);
6731
6732 // Import the location of this declaration.
6733 ExpectedSLoc BeginLocOrErr = import(From: D->getBeginLoc());
6734 if (!BeginLocOrErr)
6735 return BeginLocOrErr.takeError();
6736
6737 auto IdLocOrErr = import(From: D->getLocation());
6738 if (!IdLocOrErr)
6739 return IdLocOrErr.takeError();
6740
6741 // Import template arguments.
6742 SmallVector<TemplateArgument, 2> TemplateArgs;
6743 if (Error Err =
6744 ImportTemplateArguments(FromArgs: D->getTemplateArgs().asArray(), ToArgs&: TemplateArgs))
6745 return std::move(Err);
6746
6747 // Try to find an existing specialization with these template arguments.
6748 void *InsertPos = nullptr;
6749 VarTemplateSpecializationDecl *FoundSpecialization =
6750 VarTemplate->findSpecialization(Args: TemplateArgs, InsertPos);
6751 if (FoundSpecialization) {
6752 if (IsStructuralMatch(From: D, To: FoundSpecialization)) {
6753 VarDecl *FoundDef = FoundSpecialization->getDefinition();
6754 if (D->getDeclContext()->isRecord()) {
6755 // In a record, it is allowed only to have one optional declaration and
6756 // one definition of the (static or constexpr) variable template.
6757 assert(
6758 FoundSpecialization->getDeclContext()->isRecord() &&
6759 "Member variable template specialization imported as non-member, "
6760 "inconsistent imported AST?");
6761 if (FoundDef)
6762 return Importer.MapImported(From: D, To: FoundDef);
6763 if (!D->isThisDeclarationADefinition())
6764 return Importer.MapImported(From: D, To: FoundSpecialization);
6765 } else {
6766 // If definition is imported and there is already one, map to it.
6767 // Otherwise create a new variable and link it to the existing.
6768 if (FoundDef && D->isThisDeclarationADefinition())
6769 return Importer.MapImported(From: D, To: FoundDef);
6770 }
6771 } else {
6772 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
6773 }
6774 }
6775
6776 VarTemplateSpecializationDecl *D2 = nullptr;
6777
6778 TemplateArgumentListInfo ToTAInfo;
6779 if (const auto *Args = D->getTemplateArgsAsWritten()) {
6780 if (Error Err = ImportTemplateArgumentListInfo(From: *Args, Result&: ToTAInfo))
6781 return std::move(Err);
6782 }
6783
6784 using PartVarSpecDecl = VarTemplatePartialSpecializationDecl;
6785 // Create a new specialization.
6786 if (auto *FromPartial = dyn_cast<PartVarSpecDecl>(Val: D)) {
6787 auto ToTPListOrErr = import(From: FromPartial->getTemplateParameters());
6788 if (!ToTPListOrErr)
6789 return ToTPListOrErr.takeError();
6790
6791 PartVarSpecDecl *ToPartial;
6792 if (GetImportedOrCreateDecl(ToD&: ToPartial, FromD: D, args&: Importer.getToContext(), args&: DC,
6793 args&: *BeginLocOrErr, args&: *IdLocOrErr, args&: *ToTPListOrErr,
6794 args&: VarTemplate, args: QualType(), args: nullptr,
6795 args: D->getStorageClass(), args&: TemplateArgs))
6796 return ToPartial;
6797
6798 if (Expected<PartVarSpecDecl *> ToInstOrErr =
6799 import(From: FromPartial->getInstantiatedFromMember()))
6800 ToPartial->setInstantiatedFromMember(*ToInstOrErr);
6801 else
6802 return ToInstOrErr.takeError();
6803
6804 if (FromPartial->isMemberSpecialization())
6805 ToPartial->setMemberSpecialization();
6806
6807 D2 = ToPartial;
6808
6809 // FIXME: Use this update if VarTemplatePartialSpecializationDecl is fixed
6810 // to adopt template parameters.
6811 // updateLookupTableForTemplateParameters(**ToTPListOrErr);
6812 } else { // Full specialization
6813 if (GetImportedOrCreateDecl(ToD&: D2, FromD: D, args&: Importer.getToContext(), args&: DC,
6814 args&: *BeginLocOrErr, args&: *IdLocOrErr, args&: VarTemplate,
6815 args: QualType(), args: nullptr, args: D->getStorageClass(),
6816 args&: TemplateArgs))
6817 return D2;
6818 }
6819
6820 // Update InsertPos, because preceding import calls may have invalidated
6821 // it by adding new specializations.
6822 if (!VarTemplate->findSpecialization(Args: TemplateArgs, InsertPos))
6823 VarTemplate->AddSpecialization(D: D2, InsertPos);
6824
6825 QualType T;
6826 if (Error Err = importInto(To&: T, From: D->getType()))
6827 return std::move(Err);
6828 D2->setType(T);
6829
6830 auto TInfoOrErr = import(From: D->getTypeSourceInfo());
6831 if (!TInfoOrErr)
6832 return TInfoOrErr.takeError();
6833 D2->setTypeSourceInfo(*TInfoOrErr);
6834
6835 if (D->getPointOfInstantiation().isValid()) {
6836 if (ExpectedSLoc POIOrErr = import(From: D->getPointOfInstantiation()))
6837 D2->setPointOfInstantiation(*POIOrErr);
6838 else
6839 return POIOrErr.takeError();
6840 }
6841
6842 D2->setSpecializationKind(D->getSpecializationKind());
6843
6844 if (D->getTemplateArgsAsWritten())
6845 D2->setTemplateArgsAsWritten(ToTAInfo);
6846
6847 if (auto LocOrErr = import(From: D->getQualifierLoc()))
6848 D2->setQualifierInfo(*LocOrErr);
6849 else
6850 return LocOrErr.takeError();
6851
6852 if (D->isConstexpr())
6853 D2->setConstexpr(true);
6854
6855 D2->setAccess(D->getAccess());
6856
6857 if (Error Err = ImportInitializer(From: D, To: D2))
6858 return std::move(Err);
6859
6860 if (FoundSpecialization)
6861 D2->setPreviousDecl(FoundSpecialization->getMostRecentDecl());
6862
6863 addDeclToContexts(FromD: D, ToD: D2);
6864
6865 // Import the rest of the chain. I.e. import all subsequent declarations.
6866 for (++RedeclIt; RedeclIt != Redecls.end(); ++RedeclIt) {
6867 ExpectedDecl RedeclOrErr = import(From: *RedeclIt);
6868 if (!RedeclOrErr)
6869 return RedeclOrErr.takeError();
6870 }
6871
6872 return D2;
6873}
6874
6875ExpectedDecl
6876ASTNodeImporter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
6877 DeclContext *DC, *LexicalDC;
6878 DeclarationName Name;
6879 SourceLocation Loc;
6880 NamedDecl *ToD;
6881
6882 if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
6883 return std::move(Err);
6884
6885 if (ToD)
6886 return ToD;
6887
6888 const FunctionTemplateDecl *FoundByLookup = nullptr;
6889
6890 // Try to find a function in our own ("to") context with the same name, same
6891 // type, and in the same context as the function we're importing.
6892 // FIXME Split this into a separate function.
6893 if (!LexicalDC->isFunctionOrMethod()) {
6894 unsigned IDNS = Decl::IDNS_Ordinary | Decl::IDNS_OrdinaryFriend;
6895 auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
6896 for (auto *FoundDecl : FoundDecls) {
6897 if (!FoundDecl->isInIdentifierNamespace(NS: IDNS))
6898 continue;
6899
6900 if (auto *FoundTemplate = dyn_cast<FunctionTemplateDecl>(Val: FoundDecl)) {
6901 if (!hasSameVisibilityContextAndLinkage(Found: FoundTemplate, From: D))
6902 continue;
6903 if (IsStructuralMatch(From: D, To: FoundTemplate)) {
6904 FunctionTemplateDecl *TemplateWithDef =
6905 getTemplateDefinition(D: FoundTemplate);
6906 if (D->isThisDeclarationADefinition() && TemplateWithDef)
6907 return Importer.MapImported(From: D, To: TemplateWithDef);
6908
6909 FoundByLookup = FoundTemplate;
6910 break;
6911 // TODO: handle conflicting names
6912 }
6913 }
6914 }
6915 }
6916
6917 auto ParamsOrErr = import(From: D->getTemplateParameters());
6918 if (!ParamsOrErr)
6919 return ParamsOrErr.takeError();
6920 TemplateParameterList *Params = *ParamsOrErr;
6921
6922 FunctionDecl *TemplatedFD;
6923 if (Error Err = importInto(To&: TemplatedFD, From: D->getTemplatedDecl()))
6924 return std::move(Err);
6925
6926 // At creation of the template the template parameters are "adopted"
6927 // (DeclContext is changed). After this possible change the lookup table
6928 // must be updated.
6929 // At deduction guides the DeclContext of the template parameters may be
6930 // different from what we would expect, it may be the class template, or a
6931 // probably different CXXDeductionGuideDecl. This may come from the fact that
6932 // the template parameter objects may be shared between deduction guides or
6933 // the class template, and at creation of multiple FunctionTemplateDecl
6934 // objects (for deduction guides) the same parameters are re-used. The
6935 // "adoption" happens multiple times with different parent, even recursively
6936 // for TemplateTemplateParmDecl. The same happens at import when the
6937 // FunctionTemplateDecl objects are created, but in different order.
6938 // In this way the DeclContext of these template parameters is not necessarily
6939 // the same as in the "from" context.
6940 SmallVector<DeclContext *, 2> OldParamDC;
6941 OldParamDC.reserve(N: Params->size());
6942 llvm::transform(Range&: *Params, d_first: std::back_inserter(x&: OldParamDC),
6943 F: [](NamedDecl *ND) { return ND->getDeclContext(); });
6944
6945 FunctionTemplateDecl *ToFunc;
6946 if (GetImportedOrCreateDecl(ToD&: ToFunc, FromD: D, args&: Importer.getToContext(), args&: DC, args&: Loc, args&: Name,
6947 args&: Params, args&: TemplatedFD))
6948 return ToFunc;
6949
6950 // Fail if TemplatedFD is already part of a template.
6951 // The template should have been found by structural equivalence check before,
6952 // or ToFunc should be already imported.
6953 // If not, there is AST incompatibility that can be caused by previous import
6954 // errors. (NameConflict is not exact here.)
6955 if (TemplatedFD->getDescribedTemplate())
6956 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
6957
6958 TemplatedFD->setDescribedFunctionTemplate(ToFunc);
6959
6960 ToFunc->setAccess(D->getAccess());
6961 ToFunc->setLexicalDeclContext(LexicalDC);
6962 addDeclToContexts(FromD: D, ToD: ToFunc);
6963
6964 ASTImporterLookupTable *LT = Importer.SharedState->getLookupTable();
6965 if (LT && !OldParamDC.empty()) {
6966 for (unsigned int I = 0; I < OldParamDC.size(); ++I)
6967 LT->updateForced(ND: Params->getParam(Idx: I), OldDC: OldParamDC[I]);
6968 }
6969
6970 if (FoundByLookup) {
6971 auto *Recent =
6972 const_cast<FunctionTemplateDecl *>(FoundByLookup->getMostRecentDecl());
6973 if (!TemplatedFD->getPreviousDecl()) {
6974 assert(FoundByLookup->getTemplatedDecl() &&
6975 "Found decl must have its templated decl set");
6976 auto *PrevTemplated =
6977 FoundByLookup->getTemplatedDecl()->getMostRecentDecl();
6978 if (TemplatedFD != PrevTemplated)
6979 TemplatedFD->setPreviousDecl(PrevTemplated);
6980 }
6981 ToFunc->setPreviousDecl(Recent);
6982 }
6983
6984 return ToFunc;
6985}
6986
6987ExpectedDecl ASTNodeImporter::VisitConceptDecl(ConceptDecl *D) {
6988 DeclContext *DC, *LexicalDC;
6989 Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC);
6990 auto LocationOrErr = importChecked(Err, From: D->getLocation());
6991 auto NameDeclOrErr = importChecked(Err, From: D->getDeclName());
6992 auto ToTemplateParameters = importChecked(Err, From: D->getTemplateParameters());
6993 auto ConstraintExpr = importChecked(Err, From: D->getConstraintExpr());
6994 if (Err)
6995 return std::move(Err);
6996
6997 ConceptDecl *To;
6998 if (GetImportedOrCreateDecl(ToD&: To, FromD: D, args&: Importer.getToContext(), args&: DC, args&: LocationOrErr,
6999 args&: NameDeclOrErr, args&: ToTemplateParameters,
7000 args&: ConstraintExpr))
7001 return To;
7002 To->setLexicalDeclContext(LexicalDC);
7003 LexicalDC->addDeclInternal(D: To);
7004 return To;
7005}
7006
7007ExpectedDecl
7008ASTNodeImporter::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) {
7009 DeclContext *DC, *LexicalDC;
7010 Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC);
7011 auto RequiresLoc = importChecked(Err, From: D->getLocation());
7012 if (Err)
7013 return std::move(Err);
7014
7015 RequiresExprBodyDecl *To;
7016 if (GetImportedOrCreateDecl(ToD&: To, FromD: D, args&: Importer.getToContext(), args&: DC, args&: RequiresLoc))
7017 return To;
7018 To->setLexicalDeclContext(LexicalDC);
7019 LexicalDC->addDeclInternal(D: To);
7020 return To;
7021}
7022
7023ExpectedDecl ASTNodeImporter::VisitImplicitConceptSpecializationDecl(
7024 ImplicitConceptSpecializationDecl *D) {
7025 DeclContext *DC, *LexicalDC;
7026 Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC);
7027 auto ToSL = importChecked(Err, From: D->getLocation());
7028 if (Err)
7029 return std::move(Err);
7030
7031 SmallVector<TemplateArgument, 2> ToArgs(D->getTemplateArguments().size());
7032 if (Error Err = ImportTemplateArguments(FromArgs: D->getTemplateArguments(), ToArgs))
7033 return std::move(Err);
7034
7035 ImplicitConceptSpecializationDecl *To;
7036 if (GetImportedOrCreateDecl(ToD&: To, FromD: D, args&: Importer.getToContext(), args&: DC, args&: ToSL, args&: ToArgs))
7037 return To;
7038 To->setLexicalDeclContext(LexicalDC);
7039 LexicalDC->addDeclInternal(D: To);
7040 return To;
7041}
7042
7043//----------------------------------------------------------------------------
7044// Import Statements
7045//----------------------------------------------------------------------------
7046
7047ExpectedStmt ASTNodeImporter::VisitStmt(Stmt *S) {
7048 Importer.FromDiag(Loc: S->getBeginLoc(), DiagID: diag::err_unsupported_ast_node)
7049 << S->getStmtClassName();
7050 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
7051}
7052
7053
7054ExpectedStmt ASTNodeImporter::VisitGCCAsmStmt(GCCAsmStmt *S) {
7055 if (Importer.returnWithErrorInTest())
7056 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
7057 SmallVector<IdentifierInfo *, 4> Names;
7058 for (unsigned I = 0, E = S->getNumOutputs(); I != E; I++) {
7059 IdentifierInfo *ToII = Importer.Import(FromId: S->getOutputIdentifier(i: I));
7060 // ToII is nullptr when no symbolic name is given for output operand
7061 // see ParseStmtAsm::ParseAsmOperandsOpt
7062 Names.push_back(Elt: ToII);
7063 }
7064
7065 for (unsigned I = 0, E = S->getNumInputs(); I != E; I++) {
7066 IdentifierInfo *ToII = Importer.Import(FromId: S->getInputIdentifier(i: I));
7067 // ToII is nullptr when no symbolic name is given for input operand
7068 // see ParseStmtAsm::ParseAsmOperandsOpt
7069 Names.push_back(Elt: ToII);
7070 }
7071
7072 SmallVector<Expr *, 4> Clobbers;
7073 for (unsigned I = 0, E = S->getNumClobbers(); I != E; I++) {
7074 if (auto ClobberOrErr = import(From: S->getClobberExpr(i: I)))
7075 Clobbers.push_back(Elt: *ClobberOrErr);
7076 else
7077 return ClobberOrErr.takeError();
7078
7079 }
7080
7081 SmallVector<Expr *, 4> Constraints;
7082 for (unsigned I = 0, E = S->getNumOutputs(); I != E; I++) {
7083 if (auto OutputOrErr = import(From: S->getOutputConstraintExpr(i: I)))
7084 Constraints.push_back(Elt: *OutputOrErr);
7085 else
7086 return OutputOrErr.takeError();
7087 }
7088
7089 for (unsigned I = 0, E = S->getNumInputs(); I != E; I++) {
7090 if (auto InputOrErr = import(From: S->getInputConstraintExpr(i: I)))
7091 Constraints.push_back(Elt: *InputOrErr);
7092 else
7093 return InputOrErr.takeError();
7094 }
7095
7096 SmallVector<Expr *, 4> Exprs(S->getNumOutputs() + S->getNumInputs() +
7097 S->getNumLabels());
7098 if (Error Err = ImportContainerChecked(InContainer: S->outputs(), OutContainer&: Exprs))
7099 return std::move(Err);
7100
7101 if (Error Err =
7102 ImportArrayChecked(InContainer: S->inputs(), Obegin: Exprs.begin() + S->getNumOutputs()))
7103 return std::move(Err);
7104
7105 if (Error Err = ImportArrayChecked(
7106 InContainer: S->labels(), Obegin: Exprs.begin() + S->getNumOutputs() + S->getNumInputs()))
7107 return std::move(Err);
7108
7109 ExpectedSLoc AsmLocOrErr = import(From: S->getAsmLoc());
7110 if (!AsmLocOrErr)
7111 return AsmLocOrErr.takeError();
7112 auto AsmStrOrErr = import(From: S->getAsmStringExpr());
7113 if (!AsmStrOrErr)
7114 return AsmStrOrErr.takeError();
7115 ExpectedSLoc RParenLocOrErr = import(From: S->getRParenLoc());
7116 if (!RParenLocOrErr)
7117 return RParenLocOrErr.takeError();
7118
7119 return new (Importer.getToContext()) GCCAsmStmt(
7120 Importer.getToContext(),
7121 *AsmLocOrErr,
7122 S->isSimple(),
7123 S->isVolatile(),
7124 S->getNumOutputs(),
7125 S->getNumInputs(),
7126 Names.data(),
7127 Constraints.data(),
7128 Exprs.data(),
7129 *AsmStrOrErr,
7130 S->getNumClobbers(),
7131 Clobbers.data(),
7132 S->getNumLabels(),
7133 *RParenLocOrErr);
7134}
7135
7136ExpectedStmt ASTNodeImporter::VisitDeclStmt(DeclStmt *S) {
7137
7138 Error Err = Error::success();
7139 auto ToDG = importChecked(Err, From: S->getDeclGroup());
7140 auto ToBeginLoc = importChecked(Err, From: S->getBeginLoc());
7141 auto ToEndLoc = importChecked(Err, From: S->getEndLoc());
7142 if (Err)
7143 return std::move(Err);
7144 return new (Importer.getToContext()) DeclStmt(ToDG, ToBeginLoc, ToEndLoc);
7145}
7146
7147ExpectedStmt ASTNodeImporter::VisitNullStmt(NullStmt *S) {
7148 ExpectedSLoc ToSemiLocOrErr = import(From: S->getSemiLoc());
7149 if (!ToSemiLocOrErr)
7150 return ToSemiLocOrErr.takeError();
7151 return new (Importer.getToContext()) NullStmt(
7152 *ToSemiLocOrErr, S->hasLeadingEmptyMacro());
7153}
7154
7155ExpectedStmt ASTNodeImporter::VisitCompoundStmt(CompoundStmt *S) {
7156 SmallVector<Stmt *, 8> ToStmts(S->size());
7157
7158 if (Error Err = ImportContainerChecked(InContainer: S->body(), OutContainer&: ToStmts))
7159 return std::move(Err);
7160
7161 ExpectedSLoc ToLBracLocOrErr = import(From: S->getLBracLoc());
7162 if (!ToLBracLocOrErr)
7163 return ToLBracLocOrErr.takeError();
7164
7165 ExpectedSLoc ToRBracLocOrErr = import(From: S->getRBracLoc());
7166 if (!ToRBracLocOrErr)
7167 return ToRBracLocOrErr.takeError();
7168
7169 FPOptionsOverride FPO =
7170 S->hasStoredFPFeatures() ? S->getStoredFPFeatures() : FPOptionsOverride();
7171 return CompoundStmt::Create(C: Importer.getToContext(), Stmts: ToStmts, FPFeatures: FPO,
7172 LB: *ToLBracLocOrErr, RB: *ToRBracLocOrErr);
7173}
7174
7175ExpectedStmt ASTNodeImporter::VisitCaseStmt(CaseStmt *S) {
7176
7177 Error Err = Error::success();
7178 auto ToLHS = importChecked(Err, From: S->getLHS());
7179 auto ToRHS = importChecked(Err, From: S->getRHS());
7180 auto ToSubStmt = importChecked(Err, From: S->getSubStmt());
7181 auto ToCaseLoc = importChecked(Err, From: S->getCaseLoc());
7182 auto ToEllipsisLoc = importChecked(Err, From: S->getEllipsisLoc());
7183 auto ToColonLoc = importChecked(Err, From: S->getColonLoc());
7184 if (Err)
7185 return std::move(Err);
7186
7187 auto *ToStmt = CaseStmt::Create(Ctx: Importer.getToContext(), lhs: ToLHS, rhs: ToRHS,
7188 caseLoc: ToCaseLoc, ellipsisLoc: ToEllipsisLoc, colonLoc: ToColonLoc);
7189 ToStmt->setSubStmt(ToSubStmt);
7190
7191 return ToStmt;
7192}
7193
7194ExpectedStmt ASTNodeImporter::VisitDefaultStmt(DefaultStmt *S) {
7195
7196 Error Err = Error::success();
7197 auto ToDefaultLoc = importChecked(Err, From: S->getDefaultLoc());
7198 auto ToColonLoc = importChecked(Err, From: S->getColonLoc());
7199 auto ToSubStmt = importChecked(Err, From: S->getSubStmt());
7200 if (Err)
7201 return std::move(Err);
7202
7203 return new (Importer.getToContext()) DefaultStmt(
7204 ToDefaultLoc, ToColonLoc, ToSubStmt);
7205}
7206
7207ExpectedStmt ASTNodeImporter::VisitLabelStmt(LabelStmt *S) {
7208
7209 Error Err = Error::success();
7210 auto ToIdentLoc = importChecked(Err, From: S->getIdentLoc());
7211 auto ToLabelDecl = importChecked(Err, From: S->getDecl());
7212 auto ToSubStmt = importChecked(Err, From: S->getSubStmt());
7213 if (Err)
7214 return std::move(Err);
7215
7216 return new (Importer.getToContext()) LabelStmt(
7217 ToIdentLoc, ToLabelDecl, ToSubStmt);
7218}
7219
7220ExpectedStmt ASTNodeImporter::VisitAttributedStmt(AttributedStmt *S) {
7221 ExpectedSLoc ToAttrLocOrErr = import(From: S->getAttrLoc());
7222 if (!ToAttrLocOrErr)
7223 return ToAttrLocOrErr.takeError();
7224 ArrayRef<const Attr*> FromAttrs(S->getAttrs());
7225 SmallVector<const Attr *, 1> ToAttrs(FromAttrs.size());
7226 if (Error Err = ImportContainerChecked(InContainer: FromAttrs, OutContainer&: ToAttrs))
7227 return std::move(Err);
7228 ExpectedStmt ToSubStmtOrErr = import(From: S->getSubStmt());
7229 if (!ToSubStmtOrErr)
7230 return ToSubStmtOrErr.takeError();
7231
7232 return AttributedStmt::Create(
7233 C: Importer.getToContext(), Loc: *ToAttrLocOrErr, Attrs: ToAttrs, SubStmt: *ToSubStmtOrErr);
7234}
7235
7236ExpectedStmt ASTNodeImporter::VisitIfStmt(IfStmt *S) {
7237
7238 Error Err = Error::success();
7239 auto ToIfLoc = importChecked(Err, From: S->getIfLoc());
7240 auto ToInit = importChecked(Err, From: S->getInit());
7241 auto ToConditionVariable = importChecked(Err, From: S->getConditionVariable());
7242 auto ToCond = importChecked(Err, From: S->getCond());
7243 auto ToLParenLoc = importChecked(Err, From: S->getLParenLoc());
7244 auto ToRParenLoc = importChecked(Err, From: S->getRParenLoc());
7245 auto ToThen = importChecked(Err, From: S->getThen());
7246 auto ToElseLoc = importChecked(Err, From: S->getElseLoc());
7247 auto ToElse = importChecked(Err, From: S->getElse());
7248 if (Err)
7249 return std::move(Err);
7250
7251 return IfStmt::Create(Ctx: Importer.getToContext(), IL: ToIfLoc, Kind: S->getStatementKind(),
7252 Init: ToInit, Var: ToConditionVariable, Cond: ToCond, LPL: ToLParenLoc,
7253 RPL: ToRParenLoc, Then: ToThen, EL: ToElseLoc, Else: ToElse);
7254}
7255
7256ExpectedStmt ASTNodeImporter::VisitSwitchStmt(SwitchStmt *S) {
7257
7258 Error Err = Error::success();
7259 auto ToInit = importChecked(Err, From: S->getInit());
7260 auto ToConditionVariable = importChecked(Err, From: S->getConditionVariable());
7261 auto ToCond = importChecked(Err, From: S->getCond());
7262 auto ToLParenLoc = importChecked(Err, From: S->getLParenLoc());
7263 auto ToRParenLoc = importChecked(Err, From: S->getRParenLoc());
7264 auto ToBody = importChecked(Err, From: S->getBody());
7265 auto ToSwitchLoc = importChecked(Err, From: S->getSwitchLoc());
7266 if (Err)
7267 return std::move(Err);
7268
7269 auto *ToStmt =
7270 SwitchStmt::Create(Ctx: Importer.getToContext(), Init: ToInit, Var: ToConditionVariable,
7271 Cond: ToCond, LParenLoc: ToLParenLoc, RParenLoc: ToRParenLoc);
7272 ToStmt->setBody(ToBody);
7273 ToStmt->setSwitchLoc(ToSwitchLoc);
7274
7275 // Now we have to re-chain the cases.
7276 SwitchCase *LastChainedSwitchCase = nullptr;
7277 for (SwitchCase *SC = S->getSwitchCaseList(); SC != nullptr;
7278 SC = SC->getNextSwitchCase()) {
7279 Expected<SwitchCase *> ToSCOrErr = import(From: SC);
7280 if (!ToSCOrErr)
7281 return ToSCOrErr.takeError();
7282 if (LastChainedSwitchCase)
7283 LastChainedSwitchCase->setNextSwitchCase(*ToSCOrErr);
7284 else
7285 ToStmt->setSwitchCaseList(*ToSCOrErr);
7286 LastChainedSwitchCase = *ToSCOrErr;
7287 }
7288
7289 return ToStmt;
7290}
7291
7292ExpectedStmt ASTNodeImporter::VisitWhileStmt(WhileStmt *S) {
7293
7294 Error Err = Error::success();
7295 auto ToConditionVariable = importChecked(Err, From: S->getConditionVariable());
7296 auto ToCond = importChecked(Err, From: S->getCond());
7297 auto ToBody = importChecked(Err, From: S->getBody());
7298 auto ToWhileLoc = importChecked(Err, From: S->getWhileLoc());
7299 auto ToLParenLoc = importChecked(Err, From: S->getLParenLoc());
7300 auto ToRParenLoc = importChecked(Err, From: S->getRParenLoc());
7301 if (Err)
7302 return std::move(Err);
7303
7304 return WhileStmt::Create(Ctx: Importer.getToContext(), Var: ToConditionVariable, Cond: ToCond,
7305 Body: ToBody, WL: ToWhileLoc, LParenLoc: ToLParenLoc, RParenLoc: ToRParenLoc);
7306}
7307
7308ExpectedStmt ASTNodeImporter::VisitDoStmt(DoStmt *S) {
7309
7310 Error Err = Error::success();
7311 auto ToBody = importChecked(Err, From: S->getBody());
7312 auto ToCond = importChecked(Err, From: S->getCond());
7313 auto ToDoLoc = importChecked(Err, From: S->getDoLoc());
7314 auto ToWhileLoc = importChecked(Err, From: S->getWhileLoc());
7315 auto ToRParenLoc = importChecked(Err, From: S->getRParenLoc());
7316 if (Err)
7317 return std::move(Err);
7318
7319 return new (Importer.getToContext()) DoStmt(
7320 ToBody, ToCond, ToDoLoc, ToWhileLoc, ToRParenLoc);
7321}
7322
7323ExpectedStmt ASTNodeImporter::VisitForStmt(ForStmt *S) {
7324
7325 Error Err = Error::success();
7326 auto ToInit = importChecked(Err, From: S->getInit());
7327 auto ToCond = importChecked(Err, From: S->getCond());
7328 auto ToConditionVariable = importChecked(Err, From: S->getConditionVariable());
7329 auto ToInc = importChecked(Err, From: S->getInc());
7330 auto ToBody = importChecked(Err, From: S->getBody());
7331 auto ToForLoc = importChecked(Err, From: S->getForLoc());
7332 auto ToLParenLoc = importChecked(Err, From: S->getLParenLoc());
7333 auto ToRParenLoc = importChecked(Err, From: S->getRParenLoc());
7334 if (Err)
7335 return std::move(Err);
7336
7337 return new (Importer.getToContext()) ForStmt(
7338 Importer.getToContext(),
7339 ToInit, ToCond, ToConditionVariable, ToInc, ToBody, ToForLoc, ToLParenLoc,
7340 ToRParenLoc);
7341}
7342
7343ExpectedStmt ASTNodeImporter::VisitGotoStmt(GotoStmt *S) {
7344
7345 Error Err = Error::success();
7346 auto ToLabel = importChecked(Err, From: S->getLabel());
7347 auto ToGotoLoc = importChecked(Err, From: S->getGotoLoc());
7348 auto ToLabelLoc = importChecked(Err, From: S->getLabelLoc());
7349 if (Err)
7350 return std::move(Err);
7351
7352 return new (Importer.getToContext()) GotoStmt(
7353 ToLabel, ToGotoLoc, ToLabelLoc);
7354}
7355
7356ExpectedStmt ASTNodeImporter::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
7357
7358 Error Err = Error::success();
7359 auto ToGotoLoc = importChecked(Err, From: S->getGotoLoc());
7360 auto ToStarLoc = importChecked(Err, From: S->getStarLoc());
7361 auto ToTarget = importChecked(Err, From: S->getTarget());
7362 if (Err)
7363 return std::move(Err);
7364
7365 return new (Importer.getToContext()) IndirectGotoStmt(
7366 ToGotoLoc, ToStarLoc, ToTarget);
7367}
7368
7369template <typename StmtClass>
7370static ExpectedStmt ImportLoopControlStmt(ASTNodeImporter &NodeImporter,
7371 ASTImporter &Importer, StmtClass *S) {
7372 Error Err = Error::success();
7373 auto ToLoc = NodeImporter.importChecked(Err, S->getKwLoc());
7374 auto ToLabelLoc = S->hasLabelTarget()
7375 ? NodeImporter.importChecked(Err, S->getLabelLoc())
7376 : SourceLocation();
7377 auto ToDecl = S->hasLabelTarget()
7378 ? NodeImporter.importChecked(Err, S->getLabelDecl())
7379 : nullptr;
7380 if (Err)
7381 return std::move(Err);
7382 return new (Importer.getToContext()) StmtClass(ToLoc, ToLabelLoc, ToDecl);
7383}
7384
7385ExpectedStmt ASTNodeImporter::VisitContinueStmt(ContinueStmt *S) {
7386 return ImportLoopControlStmt(NodeImporter&: *this, Importer, S);
7387}
7388
7389ExpectedStmt ASTNodeImporter::VisitBreakStmt(BreakStmt *S) {
7390 return ImportLoopControlStmt(NodeImporter&: *this, Importer, S);
7391}
7392
7393ExpectedStmt ASTNodeImporter::VisitReturnStmt(ReturnStmt *S) {
7394
7395 Error Err = Error::success();
7396 auto ToReturnLoc = importChecked(Err, From: S->getReturnLoc());
7397 auto ToRetValue = importChecked(Err, From: S->getRetValue());
7398 auto ToNRVOCandidate = importChecked(Err, From: S->getNRVOCandidate());
7399 if (Err)
7400 return std::move(Err);
7401
7402 return ReturnStmt::Create(Ctx: Importer.getToContext(), RL: ToReturnLoc, E: ToRetValue,
7403 NRVOCandidate: ToNRVOCandidate);
7404}
7405
7406ExpectedStmt ASTNodeImporter::VisitCXXCatchStmt(CXXCatchStmt *S) {
7407
7408 Error Err = Error::success();
7409 auto ToCatchLoc = importChecked(Err, From: S->getCatchLoc());
7410 auto ToExceptionDecl = importChecked(Err, From: S->getExceptionDecl());
7411 auto ToHandlerBlock = importChecked(Err, From: S->getHandlerBlock());
7412 if (Err)
7413 return std::move(Err);
7414
7415 return new (Importer.getToContext()) CXXCatchStmt (
7416 ToCatchLoc, ToExceptionDecl, ToHandlerBlock);
7417}
7418
7419ExpectedStmt ASTNodeImporter::VisitCXXTryStmt(CXXTryStmt *S) {
7420 ExpectedSLoc ToTryLocOrErr = import(From: S->getTryLoc());
7421 if (!ToTryLocOrErr)
7422 return ToTryLocOrErr.takeError();
7423
7424 ExpectedStmt ToTryBlockOrErr = import(From: S->getTryBlock());
7425 if (!ToTryBlockOrErr)
7426 return ToTryBlockOrErr.takeError();
7427
7428 SmallVector<Stmt *, 1> ToHandlers(S->getNumHandlers());
7429 for (unsigned HI = 0, HE = S->getNumHandlers(); HI != HE; ++HI) {
7430 CXXCatchStmt *FromHandler = S->getHandler(i: HI);
7431 if (auto ToHandlerOrErr = import(From: FromHandler))
7432 ToHandlers[HI] = *ToHandlerOrErr;
7433 else
7434 return ToHandlerOrErr.takeError();
7435 }
7436
7437 return CXXTryStmt::Create(C: Importer.getToContext(), tryLoc: *ToTryLocOrErr,
7438 tryBlock: cast<CompoundStmt>(Val: *ToTryBlockOrErr), handlers: ToHandlers);
7439}
7440
7441ExpectedStmt ASTNodeImporter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
7442
7443 Error Err = Error::success();
7444 auto ToInit = importChecked(Err, From: S->getInit());
7445 auto ToRangeStmt = importChecked(Err, From: S->getRangeStmt());
7446 auto ToBeginStmt = importChecked(Err, From: S->getBeginStmt());
7447 auto ToEndStmt = importChecked(Err, From: S->getEndStmt());
7448 auto ToCond = importChecked(Err, From: S->getCond());
7449 auto ToInc = importChecked(Err, From: S->getInc());
7450 auto ToLoopVarStmt = importChecked(Err, From: S->getLoopVarStmt());
7451 auto ToBody = importChecked(Err, From: S->getBody());
7452 auto ToForLoc = importChecked(Err, From: S->getForLoc());
7453 auto ToCoawaitLoc = importChecked(Err, From: S->getCoawaitLoc());
7454 auto ToColonLoc = importChecked(Err, From: S->getColonLoc());
7455 auto ToRParenLoc = importChecked(Err, From: S->getRParenLoc());
7456 if (Err)
7457 return std::move(Err);
7458
7459 return new (Importer.getToContext()) CXXForRangeStmt(
7460 ToInit, ToRangeStmt, ToBeginStmt, ToEndStmt, ToCond, ToInc, ToLoopVarStmt,
7461 ToBody, ToForLoc, ToCoawaitLoc, ToColonLoc, ToRParenLoc);
7462}
7463
7464ExpectedStmt
7465ASTNodeImporter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
7466 Error Err = Error::success();
7467 auto ToElement = importChecked(Err, From: S->getElement());
7468 auto ToCollection = importChecked(Err, From: S->getCollection());
7469 auto ToBody = importChecked(Err, From: S->getBody());
7470 auto ToForLoc = importChecked(Err, From: S->getForLoc());
7471 auto ToRParenLoc = importChecked(Err, From: S->getRParenLoc());
7472 if (Err)
7473 return std::move(Err);
7474
7475 return new (Importer.getToContext()) ObjCForCollectionStmt(ToElement,
7476 ToCollection,
7477 ToBody,
7478 ToForLoc,
7479 ToRParenLoc);
7480}
7481
7482ExpectedStmt ASTNodeImporter::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
7483
7484 Error Err = Error::success();
7485 auto ToAtCatchLoc = importChecked(Err, From: S->getAtCatchLoc());
7486 auto ToRParenLoc = importChecked(Err, From: S->getRParenLoc());
7487 auto ToCatchParamDecl = importChecked(Err, From: S->getCatchParamDecl());
7488 auto ToCatchBody = importChecked(Err, From: S->getCatchBody());
7489 if (Err)
7490 return std::move(Err);
7491
7492 return new (Importer.getToContext()) ObjCAtCatchStmt (
7493 ToAtCatchLoc, ToRParenLoc, ToCatchParamDecl, ToCatchBody);
7494}
7495
7496ExpectedStmt ASTNodeImporter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
7497 ExpectedSLoc ToAtFinallyLocOrErr = import(From: S->getAtFinallyLoc());
7498 if (!ToAtFinallyLocOrErr)
7499 return ToAtFinallyLocOrErr.takeError();
7500 ExpectedStmt ToAtFinallyStmtOrErr = import(From: S->getFinallyBody());
7501 if (!ToAtFinallyStmtOrErr)
7502 return ToAtFinallyStmtOrErr.takeError();
7503 return new (Importer.getToContext()) ObjCAtFinallyStmt(*ToAtFinallyLocOrErr,
7504 *ToAtFinallyStmtOrErr);
7505}
7506
7507ExpectedStmt ASTNodeImporter::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
7508
7509 Error Err = Error::success();
7510 auto ToAtTryLoc = importChecked(Err, From: S->getAtTryLoc());
7511 auto ToTryBody = importChecked(Err, From: S->getTryBody());
7512 auto ToFinallyStmt = importChecked(Err, From: S->getFinallyStmt());
7513 if (Err)
7514 return std::move(Err);
7515
7516 SmallVector<Stmt *, 1> ToCatchStmts(S->getNumCatchStmts());
7517 for (unsigned CI = 0, CE = S->getNumCatchStmts(); CI != CE; ++CI) {
7518 ObjCAtCatchStmt *FromCatchStmt = S->getCatchStmt(I: CI);
7519 if (ExpectedStmt ToCatchStmtOrErr = import(From: FromCatchStmt))
7520 ToCatchStmts[CI] = *ToCatchStmtOrErr;
7521 else
7522 return ToCatchStmtOrErr.takeError();
7523 }
7524
7525 return ObjCAtTryStmt::Create(Context: Importer.getToContext(),
7526 atTryLoc: ToAtTryLoc, atTryStmt: ToTryBody,
7527 CatchStmts: ToCatchStmts.begin(), NumCatchStmts: ToCatchStmts.size(),
7528 atFinallyStmt: ToFinallyStmt);
7529}
7530
7531ExpectedStmt
7532ASTNodeImporter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
7533
7534 Error Err = Error::success();
7535 auto ToAtSynchronizedLoc = importChecked(Err, From: S->getAtSynchronizedLoc());
7536 auto ToSynchExpr = importChecked(Err, From: S->getSynchExpr());
7537 auto ToSynchBody = importChecked(Err, From: S->getSynchBody());
7538 if (Err)
7539 return std::move(Err);
7540
7541 return new (Importer.getToContext()) ObjCAtSynchronizedStmt(
7542 ToAtSynchronizedLoc, ToSynchExpr, ToSynchBody);
7543}
7544
7545ExpectedStmt ASTNodeImporter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
7546 ExpectedSLoc ToThrowLocOrErr = import(From: S->getThrowLoc());
7547 if (!ToThrowLocOrErr)
7548 return ToThrowLocOrErr.takeError();
7549 ExpectedExpr ToThrowExprOrErr = import(From: S->getThrowExpr());
7550 if (!ToThrowExprOrErr)
7551 return ToThrowExprOrErr.takeError();
7552 return new (Importer.getToContext()) ObjCAtThrowStmt(
7553 *ToThrowLocOrErr, *ToThrowExprOrErr);
7554}
7555
7556ExpectedStmt ASTNodeImporter::VisitObjCAutoreleasePoolStmt(
7557 ObjCAutoreleasePoolStmt *S) {
7558 ExpectedSLoc ToAtLocOrErr = import(From: S->getAtLoc());
7559 if (!ToAtLocOrErr)
7560 return ToAtLocOrErr.takeError();
7561 ExpectedStmt ToSubStmtOrErr = import(From: S->getSubStmt());
7562 if (!ToSubStmtOrErr)
7563 return ToSubStmtOrErr.takeError();
7564 return new (Importer.getToContext()) ObjCAutoreleasePoolStmt(*ToAtLocOrErr,
7565 *ToSubStmtOrErr);
7566}
7567
7568//----------------------------------------------------------------------------
7569// Import Expressions
7570//----------------------------------------------------------------------------
7571ExpectedStmt ASTNodeImporter::VisitExpr(Expr *E) {
7572 Importer.FromDiag(Loc: E->getBeginLoc(), DiagID: diag::err_unsupported_ast_node)
7573 << E->getStmtClassName();
7574 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
7575}
7576
7577ExpectedStmt ASTNodeImporter::VisitSourceLocExpr(SourceLocExpr *E) {
7578 Error Err = Error::success();
7579 auto ToType = importChecked(Err, From: E->getType());
7580 auto BLoc = importChecked(Err, From: E->getBeginLoc());
7581 auto RParenLoc = importChecked(Err, From: E->getEndLoc());
7582 if (Err)
7583 return std::move(Err);
7584 auto ParentContextOrErr = Importer.ImportContext(FromDC: E->getParentContext());
7585 if (!ParentContextOrErr)
7586 return ParentContextOrErr.takeError();
7587
7588 return new (Importer.getToContext())
7589 SourceLocExpr(Importer.getToContext(), E->getIdentKind(), ToType, BLoc,
7590 RParenLoc, *ParentContextOrErr);
7591}
7592
7593ExpectedStmt ASTNodeImporter::VisitVAArgExpr(VAArgExpr *E) {
7594
7595 Error Err = Error::success();
7596 auto ToBuiltinLoc = importChecked(Err, From: E->getBuiltinLoc());
7597 auto ToSubExpr = importChecked(Err, From: E->getSubExpr());
7598 auto ToWrittenTypeInfo = importChecked(Err, From: E->getWrittenTypeInfo());
7599 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
7600 auto ToType = importChecked(Err, From: E->getType());
7601 if (Err)
7602 return std::move(Err);
7603
7604 return new (Importer.getToContext()) VAArgExpr(
7605 ToBuiltinLoc, ToSubExpr, ToWrittenTypeInfo, ToRParenLoc, ToType,
7606 E->isMicrosoftABI());
7607}
7608
7609ExpectedStmt ASTNodeImporter::VisitChooseExpr(ChooseExpr *E) {
7610
7611 Error Err = Error::success();
7612 auto ToCond = importChecked(Err, From: E->getCond());
7613 auto ToLHS = importChecked(Err, From: E->getLHS());
7614 auto ToRHS = importChecked(Err, From: E->getRHS());
7615 auto ToBuiltinLoc = importChecked(Err, From: E->getBuiltinLoc());
7616 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
7617 auto ToType = importChecked(Err, From: E->getType());
7618 if (Err)
7619 return std::move(Err);
7620
7621 ExprValueKind VK = E->getValueKind();
7622 ExprObjectKind OK = E->getObjectKind();
7623
7624 // The value of CondIsTrue only matters if the value is not
7625 // condition-dependent.
7626 bool CondIsTrue = !E->isConditionDependent() && E->isConditionTrue();
7627
7628 return new (Importer.getToContext())
7629 ChooseExpr(ToBuiltinLoc, ToCond, ToLHS, ToRHS, ToType, VK, OK,
7630 ToRParenLoc, CondIsTrue);
7631}
7632
7633ExpectedStmt ASTNodeImporter::VisitConvertVectorExpr(ConvertVectorExpr *E) {
7634 Error Err = Error::success();
7635 auto *ToSrcExpr = importChecked(Err, From: E->getSrcExpr());
7636 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
7637 auto ToBuiltinLoc = importChecked(Err, From: E->getBuiltinLoc());
7638 auto ToType = importChecked(Err, From: E->getType());
7639 auto *ToTSI = importChecked(Err, From: E->getTypeSourceInfo());
7640 if (Err)
7641 return std::move(Err);
7642
7643 return ConvertVectorExpr::Create(
7644 C: Importer.getToContext(), SrcExpr: ToSrcExpr, TI: ToTSI, DstType: ToType, VK: E->getValueKind(),
7645 OK: E->getObjectKind(), BuiltinLoc: ToBuiltinLoc, RParenLoc: ToRParenLoc,
7646 FPFeatures: E->getStoredFPFeaturesOrDefault());
7647}
7648
7649ExpectedStmt ASTNodeImporter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
7650 Error Err = Error::success();
7651 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
7652 auto ToBeginLoc = importChecked(Err, From: E->getBeginLoc());
7653 auto ToType = importChecked(Err, From: E->getType());
7654 const unsigned NumSubExprs = E->getNumSubExprs();
7655
7656 llvm::SmallVector<Expr *, 8> ToSubExprs;
7657 ArrayRef<Expr *> FromSubExprs(E->getSubExprs(), NumSubExprs);
7658 ToSubExprs.resize(N: NumSubExprs);
7659
7660 if ((Err = ImportContainerChecked(InContainer: FromSubExprs, OutContainer&: ToSubExprs)))
7661 return std::move(Err);
7662
7663 return new (Importer.getToContext()) ShuffleVectorExpr(
7664 Importer.getToContext(), ToSubExprs, ToType, ToBeginLoc, ToRParenLoc);
7665}
7666
7667ExpectedStmt ASTNodeImporter::VisitGNUNullExpr(GNUNullExpr *E) {
7668 ExpectedType TypeOrErr = import(From: E->getType());
7669 if (!TypeOrErr)
7670 return TypeOrErr.takeError();
7671
7672 ExpectedSLoc BeginLocOrErr = import(From: E->getBeginLoc());
7673 if (!BeginLocOrErr)
7674 return BeginLocOrErr.takeError();
7675
7676 return new (Importer.getToContext()) GNUNullExpr(*TypeOrErr, *BeginLocOrErr);
7677}
7678
7679ExpectedStmt
7680ASTNodeImporter::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
7681 Error Err = Error::success();
7682 auto ToGenericLoc = importChecked(Err, From: E->getGenericLoc());
7683 Expr *ToControllingExpr = nullptr;
7684 TypeSourceInfo *ToControllingType = nullptr;
7685 if (E->isExprPredicate())
7686 ToControllingExpr = importChecked(Err, From: E->getControllingExpr());
7687 else
7688 ToControllingType = importChecked(Err, From: E->getControllingType());
7689 assert((ToControllingExpr || ToControllingType) &&
7690 "Either the controlling expr or type must be nonnull");
7691 auto ToDefaultLoc = importChecked(Err, From: E->getDefaultLoc());
7692 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
7693 if (Err)
7694 return std::move(Err);
7695
7696 ArrayRef<const TypeSourceInfo *> FromAssocTypes(E->getAssocTypeSourceInfos());
7697 SmallVector<TypeSourceInfo *, 1> ToAssocTypes(FromAssocTypes.size());
7698 if (Error Err = ImportContainerChecked(InContainer: FromAssocTypes, OutContainer&: ToAssocTypes))
7699 return std::move(Err);
7700
7701 ArrayRef<const Expr *> FromAssocExprs(E->getAssocExprs());
7702 SmallVector<Expr *, 1> ToAssocExprs(FromAssocExprs.size());
7703 if (Error Err = ImportContainerChecked(InContainer: FromAssocExprs, OutContainer&: ToAssocExprs))
7704 return std::move(Err);
7705
7706 const ASTContext &ToCtx = Importer.getToContext();
7707 if (E->isResultDependent()) {
7708 if (ToControllingExpr) {
7709 return GenericSelectionExpr::Create(
7710 Context: ToCtx, GenericLoc: ToGenericLoc, ControllingExpr: ToControllingExpr, AssocTypes: ArrayRef(ToAssocTypes),
7711 AssocExprs: ArrayRef(ToAssocExprs), DefaultLoc: ToDefaultLoc, RParenLoc: ToRParenLoc,
7712 ContainsUnexpandedParameterPack: E->containsUnexpandedParameterPack());
7713 }
7714 return GenericSelectionExpr::Create(
7715 Context: ToCtx, GenericLoc: ToGenericLoc, ControllingType: ToControllingType, AssocTypes: ArrayRef(ToAssocTypes),
7716 AssocExprs: ArrayRef(ToAssocExprs), DefaultLoc: ToDefaultLoc, RParenLoc: ToRParenLoc,
7717 ContainsUnexpandedParameterPack: E->containsUnexpandedParameterPack());
7718 }
7719
7720 if (ToControllingExpr) {
7721 return GenericSelectionExpr::Create(
7722 Context: ToCtx, GenericLoc: ToGenericLoc, ControllingExpr: ToControllingExpr, AssocTypes: ArrayRef(ToAssocTypes),
7723 AssocExprs: ArrayRef(ToAssocExprs), DefaultLoc: ToDefaultLoc, RParenLoc: ToRParenLoc,
7724 ContainsUnexpandedParameterPack: E->containsUnexpandedParameterPack(), ResultIndex: E->getResultIndex());
7725 }
7726 return GenericSelectionExpr::Create(
7727 Context: ToCtx, GenericLoc: ToGenericLoc, ControllingType: ToControllingType, AssocTypes: ArrayRef(ToAssocTypes),
7728 AssocExprs: ArrayRef(ToAssocExprs), DefaultLoc: ToDefaultLoc, RParenLoc: ToRParenLoc,
7729 ContainsUnexpandedParameterPack: E->containsUnexpandedParameterPack(), ResultIndex: E->getResultIndex());
7730}
7731
7732ExpectedStmt ASTNodeImporter::VisitPredefinedExpr(PredefinedExpr *E) {
7733
7734 Error Err = Error::success();
7735 auto ToBeginLoc = importChecked(Err, From: E->getBeginLoc());
7736 auto ToType = importChecked(Err, From: E->getType());
7737 auto ToFunctionName = importChecked(Err, From: E->getFunctionName());
7738 if (Err)
7739 return std::move(Err);
7740
7741 return PredefinedExpr::Create(Ctx: Importer.getToContext(), L: ToBeginLoc, FNTy: ToType,
7742 IK: E->getIdentKind(), IsTransparent: E->isTransparent(),
7743 SL: ToFunctionName);
7744}
7745
7746ExpectedStmt ASTNodeImporter::VisitDeclRefExpr(DeclRefExpr *E) {
7747
7748 Error Err = Error::success();
7749 auto ToQualifierLoc = importChecked(Err, From: E->getQualifierLoc());
7750 auto ToTemplateKeywordLoc = importChecked(Err, From: E->getTemplateKeywordLoc());
7751 auto ToDecl = importChecked(Err, From: E->getDecl());
7752 auto ToLocation = importChecked(Err, From: E->getLocation());
7753 auto ToType = importChecked(Err, From: E->getType());
7754 if (Err)
7755 return std::move(Err);
7756
7757 NamedDecl *ToFoundD = nullptr;
7758 if (E->getDecl() != E->getFoundDecl()) {
7759 auto FoundDOrErr = import(From: E->getFoundDecl());
7760 if (!FoundDOrErr)
7761 return FoundDOrErr.takeError();
7762 ToFoundD = *FoundDOrErr;
7763 }
7764
7765 TemplateArgumentListInfo ToTAInfo;
7766 TemplateArgumentListInfo *ToResInfo = nullptr;
7767 if (E->hasExplicitTemplateArgs()) {
7768 if (Error Err =
7769 ImportTemplateArgumentListInfo(FromLAngleLoc: E->getLAngleLoc(), FromRAngleLoc: E->getRAngleLoc(),
7770 Container: E->template_arguments(), Result&: ToTAInfo))
7771 return std::move(Err);
7772 ToResInfo = &ToTAInfo;
7773 }
7774
7775 auto *ToE = DeclRefExpr::Create(
7776 Context: Importer.getToContext(), QualifierLoc: ToQualifierLoc, TemplateKWLoc: ToTemplateKeywordLoc, D: ToDecl,
7777 RefersToEnclosingVariableOrCapture: E->refersToEnclosingVariableOrCapture(), NameLoc: ToLocation, T: ToType,
7778 VK: E->getValueKind(), FoundD: ToFoundD, TemplateArgs: ToResInfo, NOUR: E->isNonOdrUse());
7779 if (E->hadMultipleCandidates())
7780 ToE->setHadMultipleCandidates(true);
7781 ToE->setIsImmediateEscalating(E->isImmediateEscalating());
7782 return ToE;
7783}
7784
7785ExpectedStmt ASTNodeImporter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
7786 ExpectedType TypeOrErr = import(From: E->getType());
7787 if (!TypeOrErr)
7788 return TypeOrErr.takeError();
7789
7790 return new (Importer.getToContext()) ImplicitValueInitExpr(*TypeOrErr);
7791}
7792
7793ExpectedStmt ASTNodeImporter::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
7794 ExpectedExpr ToInitOrErr = import(From: E->getInit());
7795 if (!ToInitOrErr)
7796 return ToInitOrErr.takeError();
7797
7798 ExpectedSLoc ToEqualOrColonLocOrErr = import(From: E->getEqualOrColonLoc());
7799 if (!ToEqualOrColonLocOrErr)
7800 return ToEqualOrColonLocOrErr.takeError();
7801
7802 SmallVector<Expr *, 4> ToIndexExprs(E->getNumSubExprs() - 1);
7803 // List elements from the second, the first is Init itself
7804 for (unsigned I = 1, N = E->getNumSubExprs(); I < N; I++) {
7805 if (ExpectedExpr ToArgOrErr = import(From: E->getSubExpr(Idx: I)))
7806 ToIndexExprs[I - 1] = *ToArgOrErr;
7807 else
7808 return ToArgOrErr.takeError();
7809 }
7810
7811 SmallVector<Designator, 4> ToDesignators(E->size());
7812 if (Error Err = ImportContainerChecked(InContainer: E->designators(), OutContainer&: ToDesignators))
7813 return std::move(Err);
7814
7815 return DesignatedInitExpr::Create(
7816 C: Importer.getToContext(), Designators: ToDesignators,
7817 IndexExprs: ToIndexExprs, EqualOrColonLoc: *ToEqualOrColonLocOrErr,
7818 GNUSyntax: E->usesGNUSyntax(), Init: *ToInitOrErr);
7819}
7820
7821ExpectedStmt
7822ASTNodeImporter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
7823 ExpectedType ToTypeOrErr = import(From: E->getType());
7824 if (!ToTypeOrErr)
7825 return ToTypeOrErr.takeError();
7826
7827 ExpectedSLoc ToLocationOrErr = import(From: E->getLocation());
7828 if (!ToLocationOrErr)
7829 return ToLocationOrErr.takeError();
7830
7831 return new (Importer.getToContext()) CXXNullPtrLiteralExpr(
7832 *ToTypeOrErr, *ToLocationOrErr);
7833}
7834
7835ExpectedStmt ASTNodeImporter::VisitIntegerLiteral(IntegerLiteral *E) {
7836 ExpectedType ToTypeOrErr = import(From: E->getType());
7837 if (!ToTypeOrErr)
7838 return ToTypeOrErr.takeError();
7839
7840 ExpectedSLoc ToLocationOrErr = import(From: E->getLocation());
7841 if (!ToLocationOrErr)
7842 return ToLocationOrErr.takeError();
7843
7844 return IntegerLiteral::Create(
7845 C: Importer.getToContext(), V: E->getValue(), type: *ToTypeOrErr, l: *ToLocationOrErr);
7846}
7847
7848
7849ExpectedStmt ASTNodeImporter::VisitFloatingLiteral(FloatingLiteral *E) {
7850 ExpectedType ToTypeOrErr = import(From: E->getType());
7851 if (!ToTypeOrErr)
7852 return ToTypeOrErr.takeError();
7853
7854 ExpectedSLoc ToLocationOrErr = import(From: E->getLocation());
7855 if (!ToLocationOrErr)
7856 return ToLocationOrErr.takeError();
7857
7858 return FloatingLiteral::Create(
7859 C: Importer.getToContext(), V: E->getValue(), isexact: E->isExact(),
7860 Type: *ToTypeOrErr, L: *ToLocationOrErr);
7861}
7862
7863ExpectedStmt ASTNodeImporter::VisitImaginaryLiteral(ImaginaryLiteral *E) {
7864 auto ToTypeOrErr = import(From: E->getType());
7865 if (!ToTypeOrErr)
7866 return ToTypeOrErr.takeError();
7867
7868 ExpectedExpr ToSubExprOrErr = import(From: E->getSubExpr());
7869 if (!ToSubExprOrErr)
7870 return ToSubExprOrErr.takeError();
7871
7872 return new (Importer.getToContext()) ImaginaryLiteral(
7873 *ToSubExprOrErr, *ToTypeOrErr);
7874}
7875
7876ExpectedStmt ASTNodeImporter::VisitFixedPointLiteral(FixedPointLiteral *E) {
7877 auto ToTypeOrErr = import(From: E->getType());
7878 if (!ToTypeOrErr)
7879 return ToTypeOrErr.takeError();
7880
7881 ExpectedSLoc ToLocationOrErr = import(From: E->getLocation());
7882 if (!ToLocationOrErr)
7883 return ToLocationOrErr.takeError();
7884
7885 return new (Importer.getToContext()) FixedPointLiteral(
7886 Importer.getToContext(), E->getValue(), *ToTypeOrErr, *ToLocationOrErr,
7887 Importer.getToContext().getFixedPointScale(Ty: *ToTypeOrErr));
7888}
7889
7890ExpectedStmt ASTNodeImporter::VisitCharacterLiteral(CharacterLiteral *E) {
7891 ExpectedType ToTypeOrErr = import(From: E->getType());
7892 if (!ToTypeOrErr)
7893 return ToTypeOrErr.takeError();
7894
7895 ExpectedSLoc ToLocationOrErr = import(From: E->getLocation());
7896 if (!ToLocationOrErr)
7897 return ToLocationOrErr.takeError();
7898
7899 return new (Importer.getToContext()) CharacterLiteral(
7900 E->getValue(), E->getKind(), *ToTypeOrErr, *ToLocationOrErr);
7901}
7902
7903ExpectedStmt ASTNodeImporter::VisitStringLiteral(StringLiteral *E) {
7904 ExpectedType ToTypeOrErr = import(From: E->getType());
7905 if (!ToTypeOrErr)
7906 return ToTypeOrErr.takeError();
7907
7908 SmallVector<SourceLocation, 4> ToLocations(E->getNumConcatenated());
7909 if (Error Err = ImportArrayChecked(
7910 Ibegin: E->tokloc_begin(), Iend: E->tokloc_end(), Obegin: ToLocations.begin()))
7911 return std::move(Err);
7912
7913 return StringLiteral::Create(Ctx: Importer.getToContext(), Str: E->getBytes(),
7914 Kind: E->getKind(), Pascal: E->isPascal(), Ty: *ToTypeOrErr,
7915 Locs: ToLocations);
7916}
7917
7918ExpectedStmt ASTNodeImporter::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
7919
7920 Error Err = Error::success();
7921 auto ToLParenLoc = importChecked(Err, From: E->getLParenLoc());
7922 auto ToTypeSourceInfo = importChecked(Err, From: E->getTypeSourceInfo());
7923 auto ToType = importChecked(Err, From: E->getType());
7924 auto ToInitializer = importChecked(Err, From: E->getInitializer());
7925 if (Err)
7926 return std::move(Err);
7927
7928 return new (Importer.getToContext()) CompoundLiteralExpr(
7929 ToLParenLoc, ToTypeSourceInfo, ToType, E->getValueKind(),
7930 ToInitializer, E->isFileScope());
7931}
7932
7933ExpectedStmt ASTNodeImporter::VisitAtomicExpr(AtomicExpr *E) {
7934
7935 Error Err = Error::success();
7936 auto ToBuiltinLoc = importChecked(Err, From: E->getBuiltinLoc());
7937 auto ToType = importChecked(Err, From: E->getType());
7938 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
7939 if (Err)
7940 return std::move(Err);
7941
7942 SmallVector<Expr *, 6> ToExprs(E->getNumSubExprs());
7943 if (Error Err = ImportArrayChecked(
7944 Ibegin: E->getSubExprs(), Iend: E->getSubExprs() + E->getNumSubExprs(),
7945 Obegin: ToExprs.begin()))
7946 return std::move(Err);
7947
7948 return new (Importer.getToContext()) AtomicExpr(
7949
7950 ToBuiltinLoc, ToExprs, ToType, E->getOp(), ToRParenLoc);
7951}
7952
7953ExpectedStmt ASTNodeImporter::VisitAddrLabelExpr(AddrLabelExpr *E) {
7954 Error Err = Error::success();
7955 auto ToAmpAmpLoc = importChecked(Err, From: E->getAmpAmpLoc());
7956 auto ToLabelLoc = importChecked(Err, From: E->getLabelLoc());
7957 auto ToLabel = importChecked(Err, From: E->getLabel());
7958 auto ToType = importChecked(Err, From: E->getType());
7959 if (Err)
7960 return std::move(Err);
7961
7962 return new (Importer.getToContext()) AddrLabelExpr(
7963 ToAmpAmpLoc, ToLabelLoc, ToLabel, ToType);
7964}
7965ExpectedStmt ASTNodeImporter::VisitConstantExpr(ConstantExpr *E) {
7966 Error Err = Error::success();
7967 auto ToSubExpr = importChecked(Err, From: E->getSubExpr());
7968 auto ToResult = importChecked(Err, From: E->getAPValueResult());
7969 if (Err)
7970 return std::move(Err);
7971
7972 return ConstantExpr::Create(Context: Importer.getToContext(), E: ToSubExpr, Result: ToResult);
7973}
7974ExpectedStmt ASTNodeImporter::VisitParenExpr(ParenExpr *E) {
7975 Error Err = Error::success();
7976 auto ToLParen = importChecked(Err, From: E->getLParen());
7977 auto ToRParen = importChecked(Err, From: E->getRParen());
7978 auto ToSubExpr = importChecked(Err, From: E->getSubExpr());
7979 if (Err)
7980 return std::move(Err);
7981
7982 return new (Importer.getToContext())
7983 ParenExpr(ToLParen, ToRParen, ToSubExpr);
7984}
7985
7986ExpectedStmt ASTNodeImporter::VisitParenListExpr(ParenListExpr *E) {
7987 SmallVector<Expr *, 4> ToExprs(E->getNumExprs());
7988 if (Error Err = ImportContainerChecked(InContainer: E->exprs(), OutContainer&: ToExprs))
7989 return std::move(Err);
7990
7991 ExpectedSLoc ToLParenLocOrErr = import(From: E->getLParenLoc());
7992 if (!ToLParenLocOrErr)
7993 return ToLParenLocOrErr.takeError();
7994
7995 ExpectedSLoc ToRParenLocOrErr = import(From: E->getRParenLoc());
7996 if (!ToRParenLocOrErr)
7997 return ToRParenLocOrErr.takeError();
7998
7999 return ParenListExpr::Create(Ctx: Importer.getToContext(), LParenLoc: *ToLParenLocOrErr,
8000 Exprs: ToExprs, RParenLoc: *ToRParenLocOrErr);
8001}
8002
8003ExpectedStmt ASTNodeImporter::VisitStmtExpr(StmtExpr *E) {
8004 Error Err = Error::success();
8005 auto ToSubStmt = importChecked(Err, From: E->getSubStmt());
8006 auto ToType = importChecked(Err, From: E->getType());
8007 auto ToLParenLoc = importChecked(Err, From: E->getLParenLoc());
8008 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
8009 if (Err)
8010 return std::move(Err);
8011
8012 return new (Importer.getToContext())
8013 StmtExpr(ToSubStmt, ToType, ToLParenLoc, ToRParenLoc,
8014 E->getTemplateDepth());
8015}
8016
8017ExpectedStmt ASTNodeImporter::VisitUnaryOperator(UnaryOperator *E) {
8018 Error Err = Error::success();
8019 auto ToSubExpr = importChecked(Err, From: E->getSubExpr());
8020 auto ToType = importChecked(Err, From: E->getType());
8021 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8022 if (Err)
8023 return std::move(Err);
8024
8025 auto *UO = UnaryOperator::CreateEmpty(C: Importer.getToContext(),
8026 hasFPFeatures: E->hasStoredFPFeatures());
8027 UO->setType(ToType);
8028 UO->setSubExpr(ToSubExpr);
8029 UO->setOpcode(E->getOpcode());
8030 UO->setOperatorLoc(ToOperatorLoc);
8031 UO->setCanOverflow(E->canOverflow());
8032 if (E->hasStoredFPFeatures())
8033 UO->setStoredFPFeatures(E->getStoredFPFeatures());
8034
8035 return UO;
8036}
8037
8038ExpectedStmt
8039
8040ASTNodeImporter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
8041 Error Err = Error::success();
8042 auto ToType = importChecked(Err, From: E->getType());
8043 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8044 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
8045 if (Err)
8046 return std::move(Err);
8047
8048 if (E->isArgumentType()) {
8049 Expected<TypeSourceInfo *> ToArgumentTypeInfoOrErr =
8050 import(From: E->getArgumentTypeInfo());
8051 if (!ToArgumentTypeInfoOrErr)
8052 return ToArgumentTypeInfoOrErr.takeError();
8053
8054 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(
8055 E->getKind(), *ToArgumentTypeInfoOrErr, ToType, ToOperatorLoc,
8056 ToRParenLoc);
8057 }
8058
8059 ExpectedExpr ToArgumentExprOrErr = import(From: E->getArgumentExpr());
8060 if (!ToArgumentExprOrErr)
8061 return ToArgumentExprOrErr.takeError();
8062
8063 return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(
8064 E->getKind(), *ToArgumentExprOrErr, ToType, ToOperatorLoc, ToRParenLoc);
8065}
8066
8067ExpectedStmt ASTNodeImporter::VisitBinaryOperator(BinaryOperator *E) {
8068 Error Err = Error::success();
8069 auto ToLHS = importChecked(Err, From: E->getLHS());
8070 auto ToRHS = importChecked(Err, From: E->getRHS());
8071 auto ToType = importChecked(Err, From: E->getType());
8072 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8073 if (Err)
8074 return std::move(Err);
8075
8076 return BinaryOperator::Create(
8077 C: Importer.getToContext(), lhs: ToLHS, rhs: ToRHS, opc: E->getOpcode(), ResTy: ToType,
8078 VK: E->getValueKind(), OK: E->getObjectKind(), opLoc: ToOperatorLoc,
8079 FPFeatures: E->getFPFeatures());
8080}
8081
8082ExpectedStmt ASTNodeImporter::VisitConditionalOperator(ConditionalOperator *E) {
8083 Error Err = Error::success();
8084 auto ToCond = importChecked(Err, From: E->getCond());
8085 auto ToQuestionLoc = importChecked(Err, From: E->getQuestionLoc());
8086 auto ToLHS = importChecked(Err, From: E->getLHS());
8087 auto ToColonLoc = importChecked(Err, From: E->getColonLoc());
8088 auto ToRHS = importChecked(Err, From: E->getRHS());
8089 auto ToType = importChecked(Err, From: E->getType());
8090 if (Err)
8091 return std::move(Err);
8092
8093 return new (Importer.getToContext()) ConditionalOperator(
8094 ToCond, ToQuestionLoc, ToLHS, ToColonLoc, ToRHS, ToType,
8095 E->getValueKind(), E->getObjectKind());
8096}
8097
8098ExpectedStmt
8099ASTNodeImporter::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
8100 Error Err = Error::success();
8101 auto ToCommon = importChecked(Err, From: E->getCommon());
8102 auto ToOpaqueValue = importChecked(Err, From: E->getOpaqueValue());
8103 auto ToCond = importChecked(Err, From: E->getCond());
8104 auto ToTrueExpr = importChecked(Err, From: E->getTrueExpr());
8105 auto ToFalseExpr = importChecked(Err, From: E->getFalseExpr());
8106 auto ToQuestionLoc = importChecked(Err, From: E->getQuestionLoc());
8107 auto ToColonLoc = importChecked(Err, From: E->getColonLoc());
8108 auto ToType = importChecked(Err, From: E->getType());
8109 if (Err)
8110 return std::move(Err);
8111
8112 return new (Importer.getToContext()) BinaryConditionalOperator(
8113 ToCommon, ToOpaqueValue, ToCond, ToTrueExpr, ToFalseExpr,
8114 ToQuestionLoc, ToColonLoc, ToType, E->getValueKind(),
8115 E->getObjectKind());
8116}
8117
8118ExpectedStmt ASTNodeImporter::VisitCXXRewrittenBinaryOperator(
8119 CXXRewrittenBinaryOperator *E) {
8120 Error Err = Error::success();
8121 auto ToSemanticForm = importChecked(Err, From: E->getSemanticForm());
8122 if (Err)
8123 return std::move(Err);
8124
8125 return new (Importer.getToContext())
8126 CXXRewrittenBinaryOperator(ToSemanticForm, E->isReversed());
8127}
8128
8129ExpectedStmt ASTNodeImporter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
8130 Error Err = Error::success();
8131 auto ToBeginLoc = importChecked(Err, From: E->getBeginLoc());
8132 auto ToQueriedTypeSourceInfo =
8133 importChecked(Err, From: E->getQueriedTypeSourceInfo());
8134 auto ToDimensionExpression = importChecked(Err, From: E->getDimensionExpression());
8135 auto ToEndLoc = importChecked(Err, From: E->getEndLoc());
8136 auto ToType = importChecked(Err, From: E->getType());
8137 if (Err)
8138 return std::move(Err);
8139
8140 return new (Importer.getToContext()) ArrayTypeTraitExpr(
8141 ToBeginLoc, E->getTrait(), ToQueriedTypeSourceInfo, E->getValue(),
8142 ToDimensionExpression, ToEndLoc, ToType);
8143}
8144
8145ExpectedStmt ASTNodeImporter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
8146 Error Err = Error::success();
8147 auto ToBeginLoc = importChecked(Err, From: E->getBeginLoc());
8148 auto ToQueriedExpression = importChecked(Err, From: E->getQueriedExpression());
8149 auto ToEndLoc = importChecked(Err, From: E->getEndLoc());
8150 auto ToType = importChecked(Err, From: E->getType());
8151 if (Err)
8152 return std::move(Err);
8153
8154 return new (Importer.getToContext()) ExpressionTraitExpr(
8155 ToBeginLoc, E->getTrait(), ToQueriedExpression, E->getValue(),
8156 ToEndLoc, ToType);
8157}
8158
8159ExpectedStmt ASTNodeImporter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
8160 Error Err = Error::success();
8161 auto ToLocation = importChecked(Err, From: E->getLocation());
8162 auto ToType = importChecked(Err, From: E->getType());
8163 auto ToSourceExpr = importChecked(Err, From: E->getSourceExpr());
8164 if (Err)
8165 return std::move(Err);
8166
8167 return new (Importer.getToContext()) OpaqueValueExpr(
8168 ToLocation, ToType, E->getValueKind(), E->getObjectKind(), ToSourceExpr);
8169}
8170
8171ExpectedStmt ASTNodeImporter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
8172 Error Err = Error::success();
8173 auto ToLHS = importChecked(Err, From: E->getLHS());
8174 auto ToRHS = importChecked(Err, From: E->getRHS());
8175 auto ToType = importChecked(Err, From: E->getType());
8176 auto ToRBracketLoc = importChecked(Err, From: E->getRBracketLoc());
8177 if (Err)
8178 return std::move(Err);
8179
8180 return new (Importer.getToContext()) ArraySubscriptExpr(
8181 ToLHS, ToRHS, ToType, E->getValueKind(), E->getObjectKind(),
8182 ToRBracketLoc);
8183}
8184
8185ExpectedStmt
8186ASTNodeImporter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
8187 Error Err = Error::success();
8188 auto ToLHS = importChecked(Err, From: E->getLHS());
8189 auto ToRHS = importChecked(Err, From: E->getRHS());
8190 auto ToType = importChecked(Err, From: E->getType());
8191 auto ToComputationLHSType = importChecked(Err, From: E->getComputationLHSType());
8192 auto ToComputationResultType =
8193 importChecked(Err, From: E->getComputationResultType());
8194 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8195 if (Err)
8196 return std::move(Err);
8197
8198 return CompoundAssignOperator::Create(
8199 C: Importer.getToContext(), lhs: ToLHS, rhs: ToRHS, opc: E->getOpcode(), ResTy: ToType,
8200 VK: E->getValueKind(), OK: E->getObjectKind(), opLoc: ToOperatorLoc,
8201 FPFeatures: E->getFPFeatures(),
8202 CompLHSType: ToComputationLHSType, CompResultType: ToComputationResultType);
8203}
8204
8205Expected<CXXCastPath>
8206ASTNodeImporter::ImportCastPath(CastExpr *CE) {
8207 CXXCastPath Path;
8208 for (auto I = CE->path_begin(), E = CE->path_end(); I != E; ++I) {
8209 if (auto SpecOrErr = import(From: *I))
8210 Path.push_back(Elt: *SpecOrErr);
8211 else
8212 return SpecOrErr.takeError();
8213 }
8214 return Path;
8215}
8216
8217ExpectedStmt ASTNodeImporter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
8218 ExpectedType ToTypeOrErr = import(From: E->getType());
8219 if (!ToTypeOrErr)
8220 return ToTypeOrErr.takeError();
8221
8222 ExpectedExpr ToSubExprOrErr = import(From: E->getSubExpr());
8223 if (!ToSubExprOrErr)
8224 return ToSubExprOrErr.takeError();
8225
8226 Expected<CXXCastPath> ToBasePathOrErr = ImportCastPath(CE: E);
8227 if (!ToBasePathOrErr)
8228 return ToBasePathOrErr.takeError();
8229
8230 return ImplicitCastExpr::Create(
8231 Context: Importer.getToContext(), T: *ToTypeOrErr, Kind: E->getCastKind(), Operand: *ToSubExprOrErr,
8232 BasePath: &(*ToBasePathOrErr), Cat: E->getValueKind(), FPO: E->getFPFeatures());
8233}
8234
8235ExpectedStmt ASTNodeImporter::VisitExplicitCastExpr(ExplicitCastExpr *E) {
8236 Error Err = Error::success();
8237 auto ToType = importChecked(Err, From: E->getType());
8238 auto ToSubExpr = importChecked(Err, From: E->getSubExpr());
8239 auto ToTypeInfoAsWritten = importChecked(Err, From: E->getTypeInfoAsWritten());
8240 if (Err)
8241 return std::move(Err);
8242
8243 Expected<CXXCastPath> ToBasePathOrErr = ImportCastPath(CE: E);
8244 if (!ToBasePathOrErr)
8245 return ToBasePathOrErr.takeError();
8246 CXXCastPath *ToBasePath = &(*ToBasePathOrErr);
8247
8248 switch (E->getStmtClass()) {
8249 case Stmt::CStyleCastExprClass: {
8250 auto *CCE = cast<CStyleCastExpr>(Val: E);
8251 ExpectedSLoc ToLParenLocOrErr = import(From: CCE->getLParenLoc());
8252 if (!ToLParenLocOrErr)
8253 return ToLParenLocOrErr.takeError();
8254 ExpectedSLoc ToRParenLocOrErr = import(From: CCE->getRParenLoc());
8255 if (!ToRParenLocOrErr)
8256 return ToRParenLocOrErr.takeError();
8257 return CStyleCastExpr::Create(
8258 Context: Importer.getToContext(), T: ToType, VK: E->getValueKind(), K: E->getCastKind(),
8259 Op: ToSubExpr, BasePath: ToBasePath, FPO: CCE->getFPFeatures(), WrittenTy: ToTypeInfoAsWritten,
8260 L: *ToLParenLocOrErr, R: *ToRParenLocOrErr);
8261 }
8262
8263 case Stmt::CXXFunctionalCastExprClass: {
8264 auto *FCE = cast<CXXFunctionalCastExpr>(Val: E);
8265 ExpectedSLoc ToLParenLocOrErr = import(From: FCE->getLParenLoc());
8266 if (!ToLParenLocOrErr)
8267 return ToLParenLocOrErr.takeError();
8268 ExpectedSLoc ToRParenLocOrErr = import(From: FCE->getRParenLoc());
8269 if (!ToRParenLocOrErr)
8270 return ToRParenLocOrErr.takeError();
8271 return CXXFunctionalCastExpr::Create(
8272 Context: Importer.getToContext(), T: ToType, VK: E->getValueKind(), Written: ToTypeInfoAsWritten,
8273 Kind: E->getCastKind(), Op: ToSubExpr, Path: ToBasePath, FPO: FCE->getFPFeatures(),
8274 LPLoc: *ToLParenLocOrErr, RPLoc: *ToRParenLocOrErr);
8275 }
8276
8277 case Stmt::ObjCBridgedCastExprClass: {
8278 auto *OCE = cast<ObjCBridgedCastExpr>(Val: E);
8279 ExpectedSLoc ToLParenLocOrErr = import(From: OCE->getLParenLoc());
8280 if (!ToLParenLocOrErr)
8281 return ToLParenLocOrErr.takeError();
8282 ExpectedSLoc ToBridgeKeywordLocOrErr = import(From: OCE->getBridgeKeywordLoc());
8283 if (!ToBridgeKeywordLocOrErr)
8284 return ToBridgeKeywordLocOrErr.takeError();
8285 return new (Importer.getToContext()) ObjCBridgedCastExpr(
8286 *ToLParenLocOrErr, OCE->getBridgeKind(), E->getCastKind(),
8287 *ToBridgeKeywordLocOrErr, ToTypeInfoAsWritten, ToSubExpr);
8288 }
8289 case Stmt::BuiltinBitCastExprClass: {
8290 auto *BBC = cast<BuiltinBitCastExpr>(Val: E);
8291 ExpectedSLoc ToKWLocOrErr = import(From: BBC->getBeginLoc());
8292 if (!ToKWLocOrErr)
8293 return ToKWLocOrErr.takeError();
8294 ExpectedSLoc ToRParenLocOrErr = import(From: BBC->getEndLoc());
8295 if (!ToRParenLocOrErr)
8296 return ToRParenLocOrErr.takeError();
8297 return new (Importer.getToContext()) BuiltinBitCastExpr(
8298 ToType, E->getValueKind(), E->getCastKind(), ToSubExpr,
8299 ToTypeInfoAsWritten, *ToKWLocOrErr, *ToRParenLocOrErr);
8300 }
8301 default:
8302 llvm_unreachable("Cast expression of unsupported type!");
8303 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
8304 }
8305}
8306
8307ExpectedStmt ASTNodeImporter::VisitOffsetOfExpr(OffsetOfExpr *E) {
8308 SmallVector<OffsetOfNode, 4> ToNodes;
8309 for (int I = 0, N = E->getNumComponents(); I < N; ++I) {
8310 const OffsetOfNode &FromNode = E->getComponent(Idx: I);
8311
8312 SourceLocation ToBeginLoc, ToEndLoc;
8313
8314 if (FromNode.getKind() != OffsetOfNode::Base) {
8315 Error Err = Error::success();
8316 ToBeginLoc = importChecked(Err, From: FromNode.getBeginLoc());
8317 ToEndLoc = importChecked(Err, From: FromNode.getEndLoc());
8318 if (Err)
8319 return std::move(Err);
8320 }
8321
8322 switch (FromNode.getKind()) {
8323 case OffsetOfNode::Array:
8324 ToNodes.push_back(
8325 Elt: OffsetOfNode(ToBeginLoc, FromNode.getArrayExprIndex(), ToEndLoc));
8326 break;
8327 case OffsetOfNode::Base: {
8328 auto ToBSOrErr = import(From: FromNode.getBase());
8329 if (!ToBSOrErr)
8330 return ToBSOrErr.takeError();
8331 ToNodes.push_back(Elt: OffsetOfNode(*ToBSOrErr));
8332 break;
8333 }
8334 case OffsetOfNode::Field: {
8335 auto ToFieldOrErr = import(From: FromNode.getField());
8336 if (!ToFieldOrErr)
8337 return ToFieldOrErr.takeError();
8338 ToNodes.push_back(Elt: OffsetOfNode(ToBeginLoc, *ToFieldOrErr, ToEndLoc));
8339 break;
8340 }
8341 case OffsetOfNode::Identifier: {
8342 IdentifierInfo *ToII = Importer.Import(FromId: FromNode.getFieldName());
8343 ToNodes.push_back(Elt: OffsetOfNode(ToBeginLoc, ToII, ToEndLoc));
8344 break;
8345 }
8346 }
8347 }
8348
8349 SmallVector<Expr *, 4> ToExprs(E->getNumExpressions());
8350 for (int I = 0, N = E->getNumExpressions(); I < N; ++I) {
8351 ExpectedExpr ToIndexExprOrErr = import(From: E->getIndexExpr(Idx: I));
8352 if (!ToIndexExprOrErr)
8353 return ToIndexExprOrErr.takeError();
8354 ToExprs[I] = *ToIndexExprOrErr;
8355 }
8356
8357 Error Err = Error::success();
8358 auto ToType = importChecked(Err, From: E->getType());
8359 auto ToTypeSourceInfo = importChecked(Err, From: E->getTypeSourceInfo());
8360 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8361 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
8362 if (Err)
8363 return std::move(Err);
8364
8365 return OffsetOfExpr::Create(
8366 C: Importer.getToContext(), type: ToType, OperatorLoc: ToOperatorLoc, tsi: ToTypeSourceInfo, comps: ToNodes,
8367 exprs: ToExprs, RParenLoc: ToRParenLoc);
8368}
8369
8370ExpectedStmt ASTNodeImporter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
8371 Error Err = Error::success();
8372 auto ToType = importChecked(Err, From: E->getType());
8373 auto ToOperand = importChecked(Err, From: E->getOperand());
8374 auto ToBeginLoc = importChecked(Err, From: E->getBeginLoc());
8375 auto ToEndLoc = importChecked(Err, From: E->getEndLoc());
8376 if (Err)
8377 return std::move(Err);
8378
8379 CanThrowResult ToCanThrow;
8380 if (E->isValueDependent())
8381 ToCanThrow = CT_Dependent;
8382 else
8383 ToCanThrow = E->getValue() ? CT_Can : CT_Cannot;
8384
8385 return new (Importer.getToContext()) CXXNoexceptExpr(
8386 ToType, ToOperand, ToCanThrow, ToBeginLoc, ToEndLoc);
8387}
8388
8389ExpectedStmt ASTNodeImporter::VisitCXXThrowExpr(CXXThrowExpr *E) {
8390 Error Err = Error::success();
8391 auto ToSubExpr = importChecked(Err, From: E->getSubExpr());
8392 auto ToType = importChecked(Err, From: E->getType());
8393 auto ToThrowLoc = importChecked(Err, From: E->getThrowLoc());
8394 if (Err)
8395 return std::move(Err);
8396
8397 return new (Importer.getToContext()) CXXThrowExpr(
8398 ToSubExpr, ToType, ToThrowLoc, E->isThrownVariableInScope());
8399}
8400
8401ExpectedStmt ASTNodeImporter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
8402 ExpectedSLoc ToUsedLocOrErr = import(From: E->getUsedLocation());
8403 if (!ToUsedLocOrErr)
8404 return ToUsedLocOrErr.takeError();
8405
8406 auto ToParamOrErr = import(From: E->getParam());
8407 if (!ToParamOrErr)
8408 return ToParamOrErr.takeError();
8409
8410 auto UsedContextOrErr = Importer.ImportContext(FromDC: E->getUsedContext());
8411 if (!UsedContextOrErr)
8412 return UsedContextOrErr.takeError();
8413
8414 // Import the default arg if it was not imported yet.
8415 // This is needed because it can happen that during the import of the
8416 // default expression (from VisitParmVarDecl) the same ParmVarDecl is
8417 // encountered here. The default argument for a ParmVarDecl is set in the
8418 // ParmVarDecl only after it is imported (set in VisitParmVarDecl if not here,
8419 // see VisitParmVarDecl).
8420 ParmVarDecl *ToParam = *ToParamOrErr;
8421 if (!ToParam->getDefaultArg()) {
8422 std::optional<ParmVarDecl *> FromParam =
8423 Importer.getImportedFromDecl(ToD: ToParam);
8424 assert(FromParam && "ParmVarDecl was not imported?");
8425
8426 if (Error Err = ImportDefaultArgOfParmVarDecl(FromParam: *FromParam, ToParam))
8427 return std::move(Err);
8428 }
8429 Expr *RewrittenInit = nullptr;
8430 if (E->hasRewrittenInit()) {
8431 ExpectedExpr ExprOrErr = import(From: E->getRewrittenExpr());
8432 if (!ExprOrErr)
8433 return ExprOrErr.takeError();
8434 RewrittenInit = ExprOrErr.get();
8435 }
8436 return CXXDefaultArgExpr::Create(C: Importer.getToContext(), Loc: *ToUsedLocOrErr,
8437 Param: *ToParamOrErr, RewrittenExpr: RewrittenInit,
8438 UsedContext: *UsedContextOrErr);
8439}
8440
8441ExpectedStmt
8442ASTNodeImporter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
8443 Error Err = Error::success();
8444 auto ToType = importChecked(Err, From: E->getType());
8445 auto ToTypeSourceInfo = importChecked(Err, From: E->getTypeSourceInfo());
8446 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
8447 if (Err)
8448 return std::move(Err);
8449
8450 return new (Importer.getToContext()) CXXScalarValueInitExpr(
8451 ToType, ToTypeSourceInfo, ToRParenLoc);
8452}
8453
8454ExpectedStmt
8455ASTNodeImporter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
8456 ExpectedExpr ToSubExprOrErr = import(From: E->getSubExpr());
8457 if (!ToSubExprOrErr)
8458 return ToSubExprOrErr.takeError();
8459
8460 auto ToDtorOrErr = import(From: E->getTemporary()->getDestructor());
8461 if (!ToDtorOrErr)
8462 return ToDtorOrErr.takeError();
8463
8464 ASTContext &ToCtx = Importer.getToContext();
8465 CXXTemporary *Temp = CXXTemporary::Create(C: ToCtx, Destructor: *ToDtorOrErr);
8466 return CXXBindTemporaryExpr::Create(C: ToCtx, Temp, SubExpr: *ToSubExprOrErr);
8467}
8468
8469ExpectedStmt
8470
8471ASTNodeImporter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
8472 Error Err = Error::success();
8473 auto ToConstructor = importChecked(Err, From: E->getConstructor());
8474 auto ToType = importChecked(Err, From: E->getType());
8475 auto ToTypeSourceInfo = importChecked(Err, From: E->getTypeSourceInfo());
8476 auto ToParenOrBraceRange = importChecked(Err, From: E->getParenOrBraceRange());
8477 if (Err)
8478 return std::move(Err);
8479
8480 SmallVector<Expr *, 8> ToArgs(E->getNumArgs());
8481 if (Error Err = ImportContainerChecked(InContainer: E->arguments(), OutContainer&: ToArgs))
8482 return std::move(Err);
8483
8484 return CXXTemporaryObjectExpr::Create(
8485 Ctx: Importer.getToContext(), Cons: ToConstructor, Ty: ToType, TSI: ToTypeSourceInfo, Args: ToArgs,
8486 ParenOrBraceRange: ToParenOrBraceRange, HadMultipleCandidates: E->hadMultipleCandidates(),
8487 ListInitialization: E->isListInitialization(), StdInitListInitialization: E->isStdInitListInitialization(),
8488 ZeroInitialization: E->requiresZeroInitialization());
8489}
8490
8491ExpectedDecl ASTNodeImporter::VisitLifetimeExtendedTemporaryDecl(
8492 LifetimeExtendedTemporaryDecl *D) {
8493 DeclContext *DC, *LexicalDC;
8494 if (Error Err = ImportDeclContext(FromD: D, ToDC&: DC, ToLexicalDC&: LexicalDC))
8495 return std::move(Err);
8496
8497 Error Err = Error::success();
8498 auto Temporary = importChecked(Err, From: D->getTemporaryExpr());
8499 auto ExtendingDecl = importChecked(Err, From: D->getExtendingDecl());
8500 if (Err)
8501 return std::move(Err);
8502 // FIXME: Should ManglingNumber get numbers associated with 'to' context?
8503
8504 LifetimeExtendedTemporaryDecl *To;
8505 if (GetImportedOrCreateDecl(ToD&: To, FromD: D, args&: Temporary, args&: ExtendingDecl,
8506 args: D->getManglingNumber()))
8507 return To;
8508
8509 To->setLexicalDeclContext(LexicalDC);
8510 LexicalDC->addDeclInternal(D: To);
8511 return To;
8512}
8513
8514ExpectedStmt
8515ASTNodeImporter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
8516 Error Err = Error::success();
8517 auto ToType = importChecked(Err, From: E->getType());
8518 Expr *ToTemporaryExpr = importChecked(
8519 Err, From: E->getLifetimeExtendedTemporaryDecl() ? nullptr : E->getSubExpr());
8520 auto ToMaterializedDecl =
8521 importChecked(Err, From: E->getLifetimeExtendedTemporaryDecl());
8522 if (Err)
8523 return std::move(Err);
8524
8525 if (!ToTemporaryExpr)
8526 ToTemporaryExpr = cast<Expr>(Val: ToMaterializedDecl->getTemporaryExpr());
8527
8528 auto *ToMTE = new (Importer.getToContext()) MaterializeTemporaryExpr(
8529 ToType, ToTemporaryExpr, E->isBoundToLvalueReference(),
8530 ToMaterializedDecl);
8531
8532 return ToMTE;
8533}
8534
8535ExpectedStmt ASTNodeImporter::VisitPackExpansionExpr(PackExpansionExpr *E) {
8536 Error Err = Error::success();
8537 auto *ToPattern = importChecked(Err, From: E->getPattern());
8538 auto ToEllipsisLoc = importChecked(Err, From: E->getEllipsisLoc());
8539 if (Err)
8540 return std::move(Err);
8541
8542 return new (Importer.getToContext())
8543 PackExpansionExpr(ToPattern, ToEllipsisLoc, E->getNumExpansions());
8544}
8545
8546ExpectedStmt ASTNodeImporter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
8547 Error Err = Error::success();
8548 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8549 auto ToPack = importChecked(Err, From: E->getPack());
8550 auto ToPackLoc = importChecked(Err, From: E->getPackLoc());
8551 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
8552 if (Err)
8553 return std::move(Err);
8554
8555 UnsignedOrNone Length = std::nullopt;
8556 if (!E->isValueDependent())
8557 Length = E->getPackLength();
8558
8559 SmallVector<TemplateArgument, 8> ToPartialArguments;
8560 if (E->isPartiallySubstituted()) {
8561 if (Error Err = ImportTemplateArguments(FromArgs: E->getPartialArguments(),
8562 ToArgs&: ToPartialArguments))
8563 return std::move(Err);
8564 }
8565
8566 return SizeOfPackExpr::Create(
8567 Context&: Importer.getToContext(), OperatorLoc: ToOperatorLoc, Pack: ToPack, PackLoc: ToPackLoc, RParenLoc: ToRParenLoc,
8568 Length, PartialArgs: ToPartialArguments);
8569}
8570
8571
8572ExpectedStmt ASTNodeImporter::VisitCXXNewExpr(CXXNewExpr *E) {
8573 Error Err = Error::success();
8574 auto ToOperatorNew = importChecked(Err, From: E->getOperatorNew());
8575 auto ToOperatorDelete = importChecked(Err, From: E->getOperatorDelete());
8576 auto ToTypeIdParens = importChecked(Err, From: E->getTypeIdParens());
8577 auto ToArraySize = importChecked(Err, From: E->getArraySize());
8578 auto ToInitializer = importChecked(Err, From: E->getInitializer());
8579 auto ToType = importChecked(Err, From: E->getType());
8580 auto ToAllocatedTypeSourceInfo =
8581 importChecked(Err, From: E->getAllocatedTypeSourceInfo());
8582 auto ToSourceRange = importChecked(Err, From: E->getSourceRange());
8583 auto ToDirectInitRange = importChecked(Err, From: E->getDirectInitRange());
8584 if (Err)
8585 return std::move(Err);
8586
8587 SmallVector<Expr *, 4> ToPlacementArgs(E->getNumPlacementArgs());
8588 if (Error Err =
8589 ImportContainerChecked(InContainer: E->placement_arguments(), OutContainer&: ToPlacementArgs))
8590 return std::move(Err);
8591
8592 return CXXNewExpr::Create(
8593 Ctx: Importer.getToContext(), IsGlobalNew: E->isGlobalNew(), OperatorNew: ToOperatorNew,
8594 OperatorDelete: ToOperatorDelete, IAP: E->implicitAllocationParameters(),
8595 UsualArrayDeleteWantsSize: E->doesUsualArrayDeleteWantSize(), PlacementArgs: ToPlacementArgs, TypeIdParens: ToTypeIdParens,
8596 ArraySize: ToArraySize, InitializationStyle: E->getInitializationStyle(), Initializer: ToInitializer, Ty: ToType,
8597 AllocatedTypeInfo: ToAllocatedTypeSourceInfo, Range: ToSourceRange, DirectInitRange: ToDirectInitRange);
8598}
8599
8600ExpectedStmt ASTNodeImporter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
8601 Error Err = Error::success();
8602 auto ToType = importChecked(Err, From: E->getType());
8603 auto ToOperatorDelete = importChecked(Err, From: E->getOperatorDelete());
8604 auto ToArgument = importChecked(Err, From: E->getArgument());
8605 auto ToBeginLoc = importChecked(Err, From: E->getBeginLoc());
8606 if (Err)
8607 return std::move(Err);
8608
8609 return new (Importer.getToContext()) CXXDeleteExpr(
8610 ToType, E->isGlobalDelete(), E->isArrayForm(), E->isArrayFormAsWritten(),
8611 E->doesUsualArrayDeleteWantSize(), ToOperatorDelete, ToArgument,
8612 ToBeginLoc);
8613}
8614
8615ExpectedStmt ASTNodeImporter::VisitCXXConstructExpr(CXXConstructExpr *E) {
8616 Error Err = Error::success();
8617 auto ToType = importChecked(Err, From: E->getType());
8618 auto ToLocation = importChecked(Err, From: E->getLocation());
8619 auto ToConstructor = importChecked(Err, From: E->getConstructor());
8620 auto ToParenOrBraceRange = importChecked(Err, From: E->getParenOrBraceRange());
8621 if (Err)
8622 return std::move(Err);
8623
8624 SmallVector<Expr *, 6> ToArgs(E->getNumArgs());
8625 if (Error Err = ImportContainerChecked(InContainer: E->arguments(), OutContainer&: ToArgs))
8626 return std::move(Err);
8627
8628 CXXConstructExpr *ToE = CXXConstructExpr::Create(
8629 Ctx: Importer.getToContext(), Ty: ToType, Loc: ToLocation, Ctor: ToConstructor,
8630 Elidable: E->isElidable(), Args: ToArgs, HadMultipleCandidates: E->hadMultipleCandidates(),
8631 ListInitialization: E->isListInitialization(), StdInitListInitialization: E->isStdInitListInitialization(),
8632 ZeroInitialization: E->requiresZeroInitialization(), ConstructKind: E->getConstructionKind(),
8633 ParenOrBraceRange: ToParenOrBraceRange);
8634 ToE->setIsImmediateEscalating(E->isImmediateEscalating());
8635 return ToE;
8636}
8637
8638ExpectedStmt ASTNodeImporter::VisitExprWithCleanups(ExprWithCleanups *E) {
8639 ExpectedExpr ToSubExprOrErr = import(From: E->getSubExpr());
8640 if (!ToSubExprOrErr)
8641 return ToSubExprOrErr.takeError();
8642
8643 SmallVector<ExprWithCleanups::CleanupObject, 8> ToObjects(E->getNumObjects());
8644 if (Error Err = ImportContainerChecked(InContainer: E->getObjects(), OutContainer&: ToObjects))
8645 return std::move(Err);
8646
8647 return ExprWithCleanups::Create(
8648 C: Importer.getToContext(), subexpr: *ToSubExprOrErr, CleanupsHaveSideEffects: E->cleanupsHaveSideEffects(),
8649 objects: ToObjects);
8650}
8651
8652ExpectedStmt ASTNodeImporter::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
8653 Error Err = Error::success();
8654 auto ToCallee = importChecked(Err, From: E->getCallee());
8655 auto ToType = importChecked(Err, From: E->getType());
8656 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
8657 if (Err)
8658 return std::move(Err);
8659
8660 SmallVector<Expr *, 4> ToArgs(E->getNumArgs());
8661 if (Error Err = ImportContainerChecked(InContainer: E->arguments(), OutContainer&: ToArgs))
8662 return std::move(Err);
8663
8664 return CXXMemberCallExpr::Create(Ctx: Importer.getToContext(), Fn: ToCallee, Args: ToArgs,
8665 Ty: ToType, VK: E->getValueKind(), RP: ToRParenLoc,
8666 FPFeatures: E->getFPFeatures());
8667}
8668
8669ExpectedStmt ASTNodeImporter::VisitCXXThisExpr(CXXThisExpr *E) {
8670 ExpectedType ToTypeOrErr = import(From: E->getType());
8671 if (!ToTypeOrErr)
8672 return ToTypeOrErr.takeError();
8673
8674 ExpectedSLoc ToLocationOrErr = import(From: E->getLocation());
8675 if (!ToLocationOrErr)
8676 return ToLocationOrErr.takeError();
8677
8678 return CXXThisExpr::Create(Ctx: Importer.getToContext(), L: *ToLocationOrErr,
8679 Ty: *ToTypeOrErr, IsImplicit: E->isImplicit());
8680}
8681
8682ExpectedStmt ASTNodeImporter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
8683 ExpectedType ToTypeOrErr = import(From: E->getType());
8684 if (!ToTypeOrErr)
8685 return ToTypeOrErr.takeError();
8686
8687 ExpectedSLoc ToLocationOrErr = import(From: E->getLocation());
8688 if (!ToLocationOrErr)
8689 return ToLocationOrErr.takeError();
8690
8691 return CXXBoolLiteralExpr::Create(C: Importer.getToContext(), Val: E->getValue(),
8692 Ty: *ToTypeOrErr, Loc: *ToLocationOrErr);
8693}
8694
8695ExpectedStmt ASTNodeImporter::VisitMemberExpr(MemberExpr *E) {
8696 Error Err = Error::success();
8697 auto ToBase = importChecked(Err, From: E->getBase());
8698 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8699 auto ToQualifierLoc = importChecked(Err, From: E->getQualifierLoc());
8700 auto ToTemplateKeywordLoc = importChecked(Err, From: E->getTemplateKeywordLoc());
8701 auto ToMemberDecl = importChecked(Err, From: E->getMemberDecl());
8702 auto ToType = importChecked(Err, From: E->getType());
8703 auto ToDecl = importChecked(Err, From: E->getFoundDecl().getDecl());
8704 auto ToName = importChecked(Err, From: E->getMemberNameInfo().getName());
8705 auto ToLoc = importChecked(Err, From: E->getMemberNameInfo().getLoc());
8706 if (Err)
8707 return std::move(Err);
8708
8709 DeclAccessPair ToFoundDecl =
8710 DeclAccessPair::make(D: ToDecl, AS: E->getFoundDecl().getAccess());
8711
8712 DeclarationNameInfo ToMemberNameInfo(ToName, ToLoc);
8713
8714 TemplateArgumentListInfo ToTAInfo, *ResInfo = nullptr;
8715 if (E->hasExplicitTemplateArgs()) {
8716 if (Error Err =
8717 ImportTemplateArgumentListInfo(FromLAngleLoc: E->getLAngleLoc(), FromRAngleLoc: E->getRAngleLoc(),
8718 Container: E->template_arguments(), Result&: ToTAInfo))
8719 return std::move(Err);
8720 ResInfo = &ToTAInfo;
8721 }
8722
8723 return MemberExpr::Create(C: Importer.getToContext(), Base: ToBase, IsArrow: E->isArrow(),
8724 OperatorLoc: ToOperatorLoc, QualifierLoc: ToQualifierLoc, TemplateKWLoc: ToTemplateKeywordLoc,
8725 MemberDecl: ToMemberDecl, FoundDecl: ToFoundDecl, MemberNameInfo: ToMemberNameInfo,
8726 TemplateArgs: ResInfo, T: ToType, VK: E->getValueKind(),
8727 OK: E->getObjectKind(), NOUR: E->isNonOdrUse());
8728}
8729
8730ExpectedStmt
8731ASTNodeImporter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
8732 Error Err = Error::success();
8733 auto ToBase = importChecked(Err, From: E->getBase());
8734 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8735 auto ToQualifierLoc = importChecked(Err, From: E->getQualifierLoc());
8736 auto ToScopeTypeInfo = importChecked(Err, From: E->getScopeTypeInfo());
8737 auto ToColonColonLoc = importChecked(Err, From: E->getColonColonLoc());
8738 auto ToTildeLoc = importChecked(Err, From: E->getTildeLoc());
8739 if (Err)
8740 return std::move(Err);
8741
8742 PseudoDestructorTypeStorage Storage;
8743 if (const IdentifierInfo *FromII = E->getDestroyedTypeIdentifier()) {
8744 const IdentifierInfo *ToII = Importer.Import(FromId: FromII);
8745 ExpectedSLoc ToDestroyedTypeLocOrErr = import(From: E->getDestroyedTypeLoc());
8746 if (!ToDestroyedTypeLocOrErr)
8747 return ToDestroyedTypeLocOrErr.takeError();
8748 Storage = PseudoDestructorTypeStorage(ToII, *ToDestroyedTypeLocOrErr);
8749 } else {
8750 if (auto ToTIOrErr = import(From: E->getDestroyedTypeInfo()))
8751 Storage = PseudoDestructorTypeStorage(*ToTIOrErr);
8752 else
8753 return ToTIOrErr.takeError();
8754 }
8755
8756 return new (Importer.getToContext()) CXXPseudoDestructorExpr(
8757 Importer.getToContext(), ToBase, E->isArrow(), ToOperatorLoc,
8758 ToQualifierLoc, ToScopeTypeInfo, ToColonColonLoc, ToTildeLoc, Storage);
8759}
8760
8761ExpectedStmt ASTNodeImporter::VisitCXXDependentScopeMemberExpr(
8762 CXXDependentScopeMemberExpr *E) {
8763 Error Err = Error::success();
8764 auto ToType = importChecked(Err, From: E->getType());
8765 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8766 auto ToQualifierLoc = importChecked(Err, From: E->getQualifierLoc());
8767 auto ToTemplateKeywordLoc = importChecked(Err, From: E->getTemplateKeywordLoc());
8768 auto ToFirstQualifierFoundInScope =
8769 importChecked(Err, From: E->getFirstQualifierFoundInScope());
8770 if (Err)
8771 return std::move(Err);
8772
8773 Expr *ToBase = nullptr;
8774 if (!E->isImplicitAccess()) {
8775 if (ExpectedExpr ToBaseOrErr = import(From: E->getBase()))
8776 ToBase = *ToBaseOrErr;
8777 else
8778 return ToBaseOrErr.takeError();
8779 }
8780
8781 TemplateArgumentListInfo ToTAInfo, *ResInfo = nullptr;
8782
8783 if (E->hasExplicitTemplateArgs()) {
8784 if (Error Err =
8785 ImportTemplateArgumentListInfo(FromLAngleLoc: E->getLAngleLoc(), FromRAngleLoc: E->getRAngleLoc(),
8786 Container: E->template_arguments(), Result&: ToTAInfo))
8787 return std::move(Err);
8788 ResInfo = &ToTAInfo;
8789 }
8790 auto ToMember = importChecked(Err, From: E->getMember());
8791 auto ToMemberLoc = importChecked(Err, From: E->getMemberLoc());
8792 if (Err)
8793 return std::move(Err);
8794 DeclarationNameInfo ToMemberNameInfo(ToMember, ToMemberLoc);
8795
8796 // Import additional name location/type info.
8797 if (Error Err =
8798 ImportDeclarationNameLoc(From: E->getMemberNameInfo(), To&: ToMemberNameInfo))
8799 return std::move(Err);
8800
8801 return CXXDependentScopeMemberExpr::Create(
8802 Ctx: Importer.getToContext(), Base: ToBase, BaseType: ToType, IsArrow: E->isArrow(), OperatorLoc: ToOperatorLoc,
8803 QualifierLoc: ToQualifierLoc, TemplateKWLoc: ToTemplateKeywordLoc, FirstQualifierFoundInScope: ToFirstQualifierFoundInScope,
8804 MemberNameInfo: ToMemberNameInfo, TemplateArgs: ResInfo);
8805}
8806
8807ExpectedStmt
8808ASTNodeImporter::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
8809 Error Err = Error::success();
8810 auto ToQualifierLoc = importChecked(Err, From: E->getQualifierLoc());
8811 auto ToTemplateKeywordLoc = importChecked(Err, From: E->getTemplateKeywordLoc());
8812 auto ToDeclName = importChecked(Err, From: E->getDeclName());
8813 auto ToNameLoc = importChecked(Err, From: E->getNameInfo().getLoc());
8814 auto ToLAngleLoc = importChecked(Err, From: E->getLAngleLoc());
8815 auto ToRAngleLoc = importChecked(Err, From: E->getRAngleLoc());
8816 if (Err)
8817 return std::move(Err);
8818
8819 DeclarationNameInfo ToNameInfo(ToDeclName, ToNameLoc);
8820 if (Error Err = ImportDeclarationNameLoc(From: E->getNameInfo(), To&: ToNameInfo))
8821 return std::move(Err);
8822
8823 TemplateArgumentListInfo ToTAInfo(ToLAngleLoc, ToRAngleLoc);
8824 TemplateArgumentListInfo *ResInfo = nullptr;
8825 if (E->hasExplicitTemplateArgs()) {
8826 if (Error Err =
8827 ImportTemplateArgumentListInfo(Container: E->template_arguments(), ToTAInfo))
8828 return std::move(Err);
8829 ResInfo = &ToTAInfo;
8830 }
8831
8832 return DependentScopeDeclRefExpr::Create(
8833 Context: Importer.getToContext(), QualifierLoc: ToQualifierLoc, TemplateKWLoc: ToTemplateKeywordLoc,
8834 NameInfo: ToNameInfo, TemplateArgs: ResInfo);
8835}
8836
8837ExpectedStmt ASTNodeImporter::VisitCXXUnresolvedConstructExpr(
8838 CXXUnresolvedConstructExpr *E) {
8839 Error Err = Error::success();
8840 auto ToLParenLoc = importChecked(Err, From: E->getLParenLoc());
8841 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
8842 auto ToType = importChecked(Err, From: E->getType());
8843 auto ToTypeSourceInfo = importChecked(Err, From: E->getTypeSourceInfo());
8844 if (Err)
8845 return std::move(Err);
8846
8847 SmallVector<Expr *, 8> ToArgs(E->getNumArgs());
8848 if (Error Err =
8849 ImportArrayChecked(Ibegin: E->arg_begin(), Iend: E->arg_end(), Obegin: ToArgs.begin()))
8850 return std::move(Err);
8851
8852 return CXXUnresolvedConstructExpr::Create(
8853 Context: Importer.getToContext(), T: ToType, TSI: ToTypeSourceInfo, LParenLoc: ToLParenLoc,
8854 Args: ArrayRef(ToArgs), RParenLoc: ToRParenLoc, IsListInit: E->isListInitialization());
8855}
8856
8857ExpectedStmt
8858ASTNodeImporter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
8859 Expected<CXXRecordDecl *> ToNamingClassOrErr = import(From: E->getNamingClass());
8860 if (!ToNamingClassOrErr)
8861 return ToNamingClassOrErr.takeError();
8862
8863 auto ToQualifierLocOrErr = import(From: E->getQualifierLoc());
8864 if (!ToQualifierLocOrErr)
8865 return ToQualifierLocOrErr.takeError();
8866
8867 Error Err = Error::success();
8868 auto ToName = importChecked(Err, From: E->getName());
8869 auto ToNameLoc = importChecked(Err, From: E->getNameLoc());
8870 if (Err)
8871 return std::move(Err);
8872 DeclarationNameInfo ToNameInfo(ToName, ToNameLoc);
8873
8874 // Import additional name location/type info.
8875 if (Error Err = ImportDeclarationNameLoc(From: E->getNameInfo(), To&: ToNameInfo))
8876 return std::move(Err);
8877
8878 UnresolvedSet<8> ToDecls;
8879 for (auto *D : E->decls())
8880 if (auto ToDOrErr = import(From: D))
8881 ToDecls.addDecl(D: cast<NamedDecl>(Val: *ToDOrErr));
8882 else
8883 return ToDOrErr.takeError();
8884
8885 if (E->hasExplicitTemplateArgs()) {
8886 TemplateArgumentListInfo ToTAInfo;
8887 if (Error Err = ImportTemplateArgumentListInfo(
8888 FromLAngleLoc: E->getLAngleLoc(), FromRAngleLoc: E->getRAngleLoc(), Container: E->template_arguments(),
8889 Result&: ToTAInfo))
8890 return std::move(Err);
8891
8892 ExpectedSLoc ToTemplateKeywordLocOrErr = import(From: E->getTemplateKeywordLoc());
8893 if (!ToTemplateKeywordLocOrErr)
8894 return ToTemplateKeywordLocOrErr.takeError();
8895
8896 const bool KnownDependent =
8897 (E->getDependence() & ExprDependence::TypeValue) ==
8898 ExprDependence::TypeValue;
8899 return UnresolvedLookupExpr::Create(
8900 Context: Importer.getToContext(), NamingClass: *ToNamingClassOrErr, QualifierLoc: *ToQualifierLocOrErr,
8901 TemplateKWLoc: *ToTemplateKeywordLocOrErr, NameInfo: ToNameInfo, RequiresADL: E->requiresADL(), Args: &ToTAInfo,
8902 Begin: ToDecls.begin(), End: ToDecls.end(), KnownDependent,
8903 /*KnownInstantiationDependent=*/E->isInstantiationDependent());
8904 }
8905
8906 return UnresolvedLookupExpr::Create(
8907 Context: Importer.getToContext(), NamingClass: *ToNamingClassOrErr, QualifierLoc: *ToQualifierLocOrErr,
8908 NameInfo: ToNameInfo, RequiresADL: E->requiresADL(), Begin: ToDecls.begin(), End: ToDecls.end(),
8909 /*KnownDependent=*/E->isTypeDependent(),
8910 /*KnownInstantiationDependent=*/E->isInstantiationDependent());
8911}
8912
8913ExpectedStmt
8914ASTNodeImporter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
8915 Error Err = Error::success();
8916 auto ToType = importChecked(Err, From: E->getType());
8917 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
8918 auto ToQualifierLoc = importChecked(Err, From: E->getQualifierLoc());
8919 auto ToTemplateKeywordLoc = importChecked(Err, From: E->getTemplateKeywordLoc());
8920 auto ToName = importChecked(Err, From: E->getName());
8921 auto ToNameLoc = importChecked(Err, From: E->getNameLoc());
8922 if (Err)
8923 return std::move(Err);
8924
8925 DeclarationNameInfo ToNameInfo(ToName, ToNameLoc);
8926 // Import additional name location/type info.
8927 if (Error Err = ImportDeclarationNameLoc(From: E->getNameInfo(), To&: ToNameInfo))
8928 return std::move(Err);
8929
8930 UnresolvedSet<8> ToDecls;
8931 for (Decl *D : E->decls())
8932 if (auto ToDOrErr = import(From: D))
8933 ToDecls.addDecl(D: cast<NamedDecl>(Val: *ToDOrErr));
8934 else
8935 return ToDOrErr.takeError();
8936
8937 TemplateArgumentListInfo ToTAInfo;
8938 TemplateArgumentListInfo *ResInfo = nullptr;
8939 if (E->hasExplicitTemplateArgs()) {
8940 TemplateArgumentListInfo FromTAInfo;
8941 E->copyTemplateArgumentsInto(List&: FromTAInfo);
8942 if (Error Err = ImportTemplateArgumentListInfo(From: FromTAInfo, Result&: ToTAInfo))
8943 return std::move(Err);
8944 ResInfo = &ToTAInfo;
8945 }
8946
8947 Expr *ToBase = nullptr;
8948 if (!E->isImplicitAccess()) {
8949 if (ExpectedExpr ToBaseOrErr = import(From: E->getBase()))
8950 ToBase = *ToBaseOrErr;
8951 else
8952 return ToBaseOrErr.takeError();
8953 }
8954
8955 return UnresolvedMemberExpr::Create(
8956 Context: Importer.getToContext(), HasUnresolvedUsing: E->hasUnresolvedUsing(), Base: ToBase, BaseType: ToType,
8957 IsArrow: E->isArrow(), OperatorLoc: ToOperatorLoc, QualifierLoc: ToQualifierLoc, TemplateKWLoc: ToTemplateKeywordLoc,
8958 MemberNameInfo: ToNameInfo, TemplateArgs: ResInfo, Begin: ToDecls.begin(), End: ToDecls.end());
8959}
8960
8961ExpectedStmt ASTNodeImporter::VisitCallExpr(CallExpr *E) {
8962 Error Err = Error::success();
8963 auto ToCallee = importChecked(Err, From: E->getCallee());
8964 auto ToType = importChecked(Err, From: E->getType());
8965 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
8966 if (Err)
8967 return std::move(Err);
8968
8969 unsigned NumArgs = E->getNumArgs();
8970 llvm::SmallVector<Expr *, 2> ToArgs(NumArgs);
8971 if (Error Err = ImportContainerChecked(InContainer: E->arguments(), OutContainer&: ToArgs))
8972 return std::move(Err);
8973
8974 if (const auto *OCE = dyn_cast<CXXOperatorCallExpr>(Val: E)) {
8975 return CXXOperatorCallExpr::Create(
8976 Ctx: Importer.getToContext(), OpKind: OCE->getOperator(), Fn: ToCallee, Args: ToArgs, Ty: ToType,
8977 VK: OCE->getValueKind(), OperatorLoc: ToRParenLoc, FPFeatures: OCE->getFPFeatures(),
8978 UsesADL: OCE->getADLCallKind());
8979 }
8980
8981 return CallExpr::Create(Ctx: Importer.getToContext(), Fn: ToCallee, Args: ToArgs, Ty: ToType,
8982 VK: E->getValueKind(), RParenLoc: ToRParenLoc, FPFeatures: E->getFPFeatures(),
8983 /*MinNumArgs=*/0, UsesADL: E->getADLCallKind());
8984}
8985
8986ExpectedStmt ASTNodeImporter::VisitLambdaExpr(LambdaExpr *E) {
8987 CXXRecordDecl *FromClass = E->getLambdaClass();
8988 auto ToClassOrErr = import(From: FromClass);
8989 if (!ToClassOrErr)
8990 return ToClassOrErr.takeError();
8991 CXXRecordDecl *ToClass = *ToClassOrErr;
8992
8993 auto ToCallOpOrErr = import(From: E->getCallOperator());
8994 if (!ToCallOpOrErr)
8995 return ToCallOpOrErr.takeError();
8996
8997 SmallVector<Expr *, 8> ToCaptureInits(E->capture_size());
8998 if (Error Err = ImportContainerChecked(InContainer: E->capture_inits(), OutContainer&: ToCaptureInits))
8999 return std::move(Err);
9000
9001 Error Err = Error::success();
9002 auto ToIntroducerRange = importChecked(Err, From: E->getIntroducerRange());
9003 auto ToCaptureDefaultLoc = importChecked(Err, From: E->getCaptureDefaultLoc());
9004 auto ToEndLoc = importChecked(Err, From: E->getEndLoc());
9005 if (Err)
9006 return std::move(Err);
9007
9008 return LambdaExpr::Create(C: Importer.getToContext(), Class: ToClass, IntroducerRange: ToIntroducerRange,
9009 CaptureDefault: E->getCaptureDefault(), CaptureDefaultLoc: ToCaptureDefaultLoc,
9010 ExplicitParams: E->hasExplicitParameters(),
9011 ExplicitResultType: E->hasExplicitResultType(), CaptureInits: ToCaptureInits,
9012 ClosingBrace: ToEndLoc, ContainsUnexpandedParameterPack: E->containsUnexpandedParameterPack());
9013}
9014
9015
9016ExpectedStmt ASTNodeImporter::VisitInitListExpr(InitListExpr *E) {
9017 Error Err = Error::success();
9018 auto ToLBraceLoc = importChecked(Err, From: E->getLBraceLoc());
9019 auto ToRBraceLoc = importChecked(Err, From: E->getRBraceLoc());
9020 auto ToType = importChecked(Err, From: E->getType());
9021 if (Err)
9022 return std::move(Err);
9023
9024 SmallVector<Expr *, 4> ToExprs(E->getNumInits());
9025 if (Error Err = ImportContainerChecked(InContainer: E->inits(), OutContainer&: ToExprs))
9026 return std::move(Err);
9027
9028 ASTContext &ToCtx = Importer.getToContext();
9029 InitListExpr *To = new (ToCtx) InitListExpr(
9030 ToCtx, ToLBraceLoc, ToExprs, ToRBraceLoc);
9031 To->setType(ToType);
9032
9033 if (E->hasArrayFiller()) {
9034 if (ExpectedExpr ToFillerOrErr = import(From: E->getArrayFiller()))
9035 To->setArrayFiller(*ToFillerOrErr);
9036 else
9037 return ToFillerOrErr.takeError();
9038 }
9039
9040 if (FieldDecl *FromFD = E->getInitializedFieldInUnion()) {
9041 if (auto ToFDOrErr = import(From: FromFD))
9042 To->setInitializedFieldInUnion(*ToFDOrErr);
9043 else
9044 return ToFDOrErr.takeError();
9045 }
9046
9047 if (InitListExpr *SyntForm = E->getSyntacticForm()) {
9048 if (auto ToSyntFormOrErr = import(From: SyntForm))
9049 To->setSyntacticForm(*ToSyntFormOrErr);
9050 else
9051 return ToSyntFormOrErr.takeError();
9052 }
9053
9054 // Copy InitListExprBitfields, which are not handled in the ctor of
9055 // InitListExpr.
9056 To->sawArrayRangeDesignator(ARD: E->hadArrayRangeDesignator());
9057
9058 return To;
9059}
9060
9061ExpectedStmt ASTNodeImporter::VisitCXXStdInitializerListExpr(
9062 CXXStdInitializerListExpr *E) {
9063 ExpectedType ToTypeOrErr = import(From: E->getType());
9064 if (!ToTypeOrErr)
9065 return ToTypeOrErr.takeError();
9066
9067 ExpectedExpr ToSubExprOrErr = import(From: E->getSubExpr());
9068 if (!ToSubExprOrErr)
9069 return ToSubExprOrErr.takeError();
9070
9071 return new (Importer.getToContext()) CXXStdInitializerListExpr(
9072 *ToTypeOrErr, *ToSubExprOrErr);
9073}
9074
9075ExpectedStmt ASTNodeImporter::VisitCXXInheritedCtorInitExpr(
9076 CXXInheritedCtorInitExpr *E) {
9077 Error Err = Error::success();
9078 auto ToLocation = importChecked(Err, From: E->getLocation());
9079 auto ToType = importChecked(Err, From: E->getType());
9080 auto ToConstructor = importChecked(Err, From: E->getConstructor());
9081 if (Err)
9082 return std::move(Err);
9083
9084 return new (Importer.getToContext()) CXXInheritedCtorInitExpr(
9085 ToLocation, ToType, ToConstructor, E->constructsVBase(),
9086 E->inheritedFromVBase());
9087}
9088
9089ExpectedStmt ASTNodeImporter::VisitArrayInitLoopExpr(ArrayInitLoopExpr *E) {
9090 Error Err = Error::success();
9091 auto ToType = importChecked(Err, From: E->getType());
9092 auto ToCommonExpr = importChecked(Err, From: E->getCommonExpr());
9093 auto ToSubExpr = importChecked(Err, From: E->getSubExpr());
9094 if (Err)
9095 return std::move(Err);
9096
9097 return new (Importer.getToContext()) ArrayInitLoopExpr(
9098 ToType, ToCommonExpr, ToSubExpr);
9099}
9100
9101ExpectedStmt ASTNodeImporter::VisitArrayInitIndexExpr(ArrayInitIndexExpr *E) {
9102 ExpectedType ToTypeOrErr = import(From: E->getType());
9103 if (!ToTypeOrErr)
9104 return ToTypeOrErr.takeError();
9105 return new (Importer.getToContext()) ArrayInitIndexExpr(*ToTypeOrErr);
9106}
9107
9108ExpectedStmt ASTNodeImporter::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
9109 ExpectedSLoc ToBeginLocOrErr = import(From: E->getBeginLoc());
9110 if (!ToBeginLocOrErr)
9111 return ToBeginLocOrErr.takeError();
9112
9113 auto ToFieldOrErr = import(From: E->getField());
9114 if (!ToFieldOrErr)
9115 return ToFieldOrErr.takeError();
9116
9117 auto UsedContextOrErr = Importer.ImportContext(FromDC: E->getUsedContext());
9118 if (!UsedContextOrErr)
9119 return UsedContextOrErr.takeError();
9120
9121 FieldDecl *ToField = *ToFieldOrErr;
9122 assert(ToField->hasInClassInitializer() &&
9123 "Field should have in-class initializer if there is a default init "
9124 "expression that uses it.");
9125 if (!ToField->getInClassInitializer()) {
9126 // The in-class initializer may be not yet set in "To" AST even if the
9127 // field is already there. This must be set here to make construction of
9128 // CXXDefaultInitExpr work.
9129 auto ToInClassInitializerOrErr =
9130 import(From: E->getField()->getInClassInitializer());
9131 if (!ToInClassInitializerOrErr)
9132 return ToInClassInitializerOrErr.takeError();
9133 ToField->setInClassInitializer(*ToInClassInitializerOrErr);
9134 }
9135
9136 Expr *RewrittenInit = nullptr;
9137 if (E->hasRewrittenInit()) {
9138 ExpectedExpr ExprOrErr = import(From: E->getRewrittenExpr());
9139 if (!ExprOrErr)
9140 return ExprOrErr.takeError();
9141 RewrittenInit = ExprOrErr.get();
9142 }
9143
9144 return CXXDefaultInitExpr::Create(Ctx: Importer.getToContext(), Loc: *ToBeginLocOrErr,
9145 Field: ToField, UsedContext: *UsedContextOrErr, RewrittenInitExpr: RewrittenInit);
9146}
9147
9148ExpectedStmt ASTNodeImporter::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
9149 Error Err = Error::success();
9150 auto ToType = importChecked(Err, From: E->getType());
9151 auto ToSubExpr = importChecked(Err, From: E->getSubExpr());
9152 auto ToTypeInfoAsWritten = importChecked(Err, From: E->getTypeInfoAsWritten());
9153 auto ToOperatorLoc = importChecked(Err, From: E->getOperatorLoc());
9154 auto ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
9155 auto ToAngleBrackets = importChecked(Err, From: E->getAngleBrackets());
9156 if (Err)
9157 return std::move(Err);
9158
9159 ExprValueKind VK = E->getValueKind();
9160 CastKind CK = E->getCastKind();
9161 auto ToBasePathOrErr = ImportCastPath(CE: E);
9162 if (!ToBasePathOrErr)
9163 return ToBasePathOrErr.takeError();
9164
9165 if (auto CCE = dyn_cast<CXXStaticCastExpr>(Val: E)) {
9166 return CXXStaticCastExpr::Create(
9167 Context: Importer.getToContext(), T: ToType, VK, K: CK, Op: ToSubExpr, Path: &(*ToBasePathOrErr),
9168 Written: ToTypeInfoAsWritten, FPO: CCE->getFPFeatures(), L: ToOperatorLoc, RParenLoc: ToRParenLoc,
9169 AngleBrackets: ToAngleBrackets);
9170 } else if (isa<CXXDynamicCastExpr>(Val: E)) {
9171 return CXXDynamicCastExpr::Create(
9172 Context: Importer.getToContext(), T: ToType, VK, Kind: CK, Op: ToSubExpr, Path: &(*ToBasePathOrErr),
9173 Written: ToTypeInfoAsWritten, L: ToOperatorLoc, RParenLoc: ToRParenLoc, AngleBrackets: ToAngleBrackets);
9174 } else if (isa<CXXReinterpretCastExpr>(Val: E)) {
9175 return CXXReinterpretCastExpr::Create(
9176 Context: Importer.getToContext(), T: ToType, VK, Kind: CK, Op: ToSubExpr, Path: &(*ToBasePathOrErr),
9177 WrittenTy: ToTypeInfoAsWritten, L: ToOperatorLoc, RParenLoc: ToRParenLoc, AngleBrackets: ToAngleBrackets);
9178 } else if (isa<CXXConstCastExpr>(Val: E)) {
9179 return CXXConstCastExpr::Create(
9180 Context: Importer.getToContext(), T: ToType, VK, Op: ToSubExpr, WrittenTy: ToTypeInfoAsWritten,
9181 L: ToOperatorLoc, RParenLoc: ToRParenLoc, AngleBrackets: ToAngleBrackets);
9182 } else {
9183 llvm_unreachable("Unknown cast type");
9184 return make_error<ASTImportError>();
9185 }
9186}
9187
9188ExpectedStmt ASTNodeImporter::VisitSubstNonTypeTemplateParmExpr(
9189 SubstNonTypeTemplateParmExpr *E) {
9190 Error Err = Error::success();
9191 auto ToType = importChecked(Err, From: E->getType());
9192 auto ToNameLoc = importChecked(Err, From: E->getNameLoc());
9193 auto ToAssociatedDecl = importChecked(Err, From: E->getAssociatedDecl());
9194 auto ToReplacement = importChecked(Err, From: E->getReplacement());
9195 if (Err)
9196 return std::move(Err);
9197
9198 return new (Importer.getToContext()) SubstNonTypeTemplateParmExpr(
9199 ToType, E->getValueKind(), ToNameLoc, ToReplacement, ToAssociatedDecl,
9200 E->getIndex(), E->getPackIndex(), E->isReferenceParameter(),
9201 E->getFinal());
9202}
9203
9204ExpectedStmt ASTNodeImporter::VisitTypeTraitExpr(TypeTraitExpr *E) {
9205 Error Err = Error::success();
9206 auto ToType = importChecked(Err, From: E->getType());
9207 auto ToBeginLoc = importChecked(Err, From: E->getBeginLoc());
9208 auto ToEndLoc = importChecked(Err, From: E->getEndLoc());
9209 if (Err)
9210 return std::move(Err);
9211
9212 SmallVector<TypeSourceInfo *, 4> ToArgs(E->getNumArgs());
9213 if (Error Err = ImportContainerChecked(InContainer: E->getArgs(), OutContainer&: ToArgs))
9214 return std::move(Err);
9215
9216 if (E->isStoredAsBoolean()) {
9217 // According to Sema::BuildTypeTrait(), if E is value-dependent,
9218 // Value is always false.
9219 bool ToValue = (E->isValueDependent() ? false : E->getBoolValue());
9220 return TypeTraitExpr::Create(C: Importer.getToContext(), T: ToType, Loc: ToBeginLoc,
9221 Kind: E->getTrait(), Args: ToArgs, RParenLoc: ToEndLoc, Value: ToValue);
9222 }
9223 return TypeTraitExpr::Create(C: Importer.getToContext(), T: ToType, Loc: ToBeginLoc,
9224 Kind: E->getTrait(), Args: ToArgs, RParenLoc: ToEndLoc,
9225 Value: E->getAPValue());
9226}
9227
9228ExpectedStmt ASTNodeImporter::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
9229 ExpectedType ToTypeOrErr = import(From: E->getType());
9230 if (!ToTypeOrErr)
9231 return ToTypeOrErr.takeError();
9232
9233 auto ToSourceRangeOrErr = import(From: E->getSourceRange());
9234 if (!ToSourceRangeOrErr)
9235 return ToSourceRangeOrErr.takeError();
9236
9237 if (E->isTypeOperand()) {
9238 if (auto ToTSIOrErr = import(From: E->getTypeOperandSourceInfo()))
9239 return new (Importer.getToContext()) CXXTypeidExpr(
9240 *ToTypeOrErr, *ToTSIOrErr, *ToSourceRangeOrErr);
9241 else
9242 return ToTSIOrErr.takeError();
9243 }
9244
9245 ExpectedExpr ToExprOperandOrErr = import(From: E->getExprOperand());
9246 if (!ToExprOperandOrErr)
9247 return ToExprOperandOrErr.takeError();
9248
9249 return new (Importer.getToContext()) CXXTypeidExpr(
9250 *ToTypeOrErr, *ToExprOperandOrErr, *ToSourceRangeOrErr);
9251}
9252
9253ExpectedStmt ASTNodeImporter::VisitCXXFoldExpr(CXXFoldExpr *E) {
9254 Error Err = Error::success();
9255
9256 QualType ToType = importChecked(Err, From: E->getType());
9257 UnresolvedLookupExpr *ToCallee = importChecked(Err, From: E->getCallee());
9258 SourceLocation ToLParenLoc = importChecked(Err, From: E->getLParenLoc());
9259 Expr *ToLHS = importChecked(Err, From: E->getLHS());
9260 SourceLocation ToEllipsisLoc = importChecked(Err, From: E->getEllipsisLoc());
9261 Expr *ToRHS = importChecked(Err, From: E->getRHS());
9262 SourceLocation ToRParenLoc = importChecked(Err, From: E->getRParenLoc());
9263
9264 if (Err)
9265 return std::move(Err);
9266
9267 return new (Importer.getToContext())
9268 CXXFoldExpr(ToType, ToCallee, ToLParenLoc, ToLHS, E->getOperator(),
9269 ToEllipsisLoc, ToRHS, ToRParenLoc, E->getNumExpansions());
9270}
9271
9272ExpectedStmt ASTNodeImporter::VisitRequiresExpr(RequiresExpr *E) {
9273 Error Err = Error::success();
9274 auto RequiresKWLoc = importChecked(Err, From: E->getRequiresKWLoc());
9275 auto RParenLoc = importChecked(Err, From: E->getRParenLoc());
9276 auto RBraceLoc = importChecked(Err, From: E->getRBraceLoc());
9277
9278 auto Body = importChecked(Err, From: E->getBody());
9279 auto LParenLoc = importChecked(Err, From: E->getLParenLoc());
9280 if (Err)
9281 return std::move(Err);
9282 SmallVector<ParmVarDecl *, 4> LocalParameters(E->getLocalParameters().size());
9283 if (Error Err =
9284 ImportArrayChecked(InContainer: E->getLocalParameters(), Obegin: LocalParameters.begin()))
9285 return std::move(Err);
9286 SmallVector<concepts::Requirement *, 4> Requirements(
9287 E->getRequirements().size());
9288 if (Error Err =
9289 ImportArrayChecked(InContainer: E->getRequirements(), Obegin: Requirements.begin()))
9290 return std::move(Err);
9291 return RequiresExpr::Create(C&: Importer.getToContext(), RequiresKWLoc, Body,
9292 LParenLoc, LocalParameters, RParenLoc,
9293 Requirements, RBraceLoc);
9294}
9295
9296ExpectedStmt
9297ASTNodeImporter::VisitConceptSpecializationExpr(ConceptSpecializationExpr *E) {
9298 Error Err = Error::success();
9299 auto CL = importChecked(Err, From: E->getConceptReference());
9300 auto CSD = importChecked(Err, From: E->getSpecializationDecl());
9301 if (Err)
9302 return std::move(Err);
9303 if (E->isValueDependent())
9304 return ConceptSpecializationExpr::Create(
9305 C: Importer.getToContext(), ConceptRef: CL,
9306 SpecDecl: const_cast<ImplicitConceptSpecializationDecl *>(CSD), Satisfaction: nullptr);
9307 ConstraintSatisfaction Satisfaction;
9308 if (Error Err =
9309 ImportConstraintSatisfaction(FromSat: E->getSatisfaction(), ToSat&: Satisfaction))
9310 return std::move(Err);
9311 return ConceptSpecializationExpr::Create(
9312 C: Importer.getToContext(), ConceptRef: CL,
9313 SpecDecl: const_cast<ImplicitConceptSpecializationDecl *>(CSD), Satisfaction: &Satisfaction);
9314}
9315
9316ExpectedStmt ASTNodeImporter::VisitSubstNonTypeTemplateParmPackExpr(
9317 SubstNonTypeTemplateParmPackExpr *E) {
9318 Error Err = Error::success();
9319 auto ToType = importChecked(Err, From: E->getType());
9320 auto ToPackLoc = importChecked(Err, From: E->getParameterPackLocation());
9321 auto ToArgPack = importChecked(Err, From: E->getArgumentPack());
9322 auto ToAssociatedDecl = importChecked(Err, From: E->getAssociatedDecl());
9323 if (Err)
9324 return std::move(Err);
9325
9326 return new (Importer.getToContext()) SubstNonTypeTemplateParmPackExpr(
9327 ToType, E->getValueKind(), ToPackLoc, ToArgPack, ToAssociatedDecl,
9328 E->getIndex(), E->getFinal());
9329}
9330
9331ExpectedStmt ASTNodeImporter::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
9332 SmallVector<Expr *, 4> ToSemantics(E->getNumSemanticExprs());
9333 if (Error Err = ImportContainerChecked(InContainer: E->semantics(), OutContainer&: ToSemantics))
9334 return std::move(Err);
9335 auto ToSyntOrErr = import(From: E->getSyntacticForm());
9336 if (!ToSyntOrErr)
9337 return ToSyntOrErr.takeError();
9338 return PseudoObjectExpr::Create(Context: Importer.getToContext(), syntactic: *ToSyntOrErr,
9339 semantic: ToSemantics, resultIndex: E->getResultExprIndex());
9340}
9341
9342ExpectedStmt
9343ASTNodeImporter::VisitCXXParenListInitExpr(CXXParenListInitExpr *E) {
9344 Error Err = Error::success();
9345 auto ToType = importChecked(Err, From: E->getType());
9346 auto ToInitLoc = importChecked(Err, From: E->getInitLoc());
9347 auto ToBeginLoc = importChecked(Err, From: E->getBeginLoc());
9348 auto ToEndLoc = importChecked(Err, From: E->getEndLoc());
9349 if (Err)
9350 return std::move(Err);
9351
9352 SmallVector<Expr *, 4> ToArgs(E->getInitExprs().size());
9353 if (Error Err = ImportContainerChecked(InContainer: E->getInitExprs(), OutContainer&: ToArgs))
9354 return std::move(Err);
9355 return CXXParenListInitExpr::Create(C&: Importer.getToContext(), Args: ToArgs, T: ToType,
9356 NumUserSpecifiedExprs: E->getUserSpecifiedInitExprs().size(),
9357 InitLoc: ToInitLoc, LParenLoc: ToBeginLoc, RParenLoc: ToEndLoc);
9358}
9359
9360Error ASTNodeImporter::ImportOverriddenMethods(CXXMethodDecl *ToMethod,
9361 CXXMethodDecl *FromMethod) {
9362 Error ImportErrors = Error::success();
9363 for (auto *FromOverriddenMethod : FromMethod->overridden_methods()) {
9364 if (auto ImportedOrErr = import(From: FromOverriddenMethod))
9365 ToMethod->getCanonicalDecl()->addOverriddenMethod(MD: cast<CXXMethodDecl>(
9366 Val: (*ImportedOrErr)->getCanonicalDecl()));
9367 else
9368 ImportErrors =
9369 joinErrors(E1: std::move(ImportErrors), E2: ImportedOrErr.takeError());
9370 }
9371 return ImportErrors;
9372}
9373
9374ASTImporter::ASTImporter(ASTContext &ToContext, FileManager &ToFileManager,
9375 ASTContext &FromContext, FileManager &FromFileManager,
9376 bool MinimalImport,
9377 std::shared_ptr<ASTImporterSharedState> SharedState)
9378 : SharedState(SharedState), ToContext(ToContext), FromContext(FromContext),
9379 ToFileManager(ToFileManager), FromFileManager(FromFileManager),
9380 Minimal(MinimalImport), ODRHandling(ODRHandlingType::Conservative) {
9381
9382 // Create a default state without the lookup table: LLDB case.
9383 if (!SharedState) {
9384 this->SharedState = std::make_shared<ASTImporterSharedState>();
9385 }
9386
9387 ImportedDecls[FromContext.getTranslationUnitDecl()] =
9388 ToContext.getTranslationUnitDecl();
9389}
9390
9391ASTImporter::~ASTImporter() = default;
9392
9393UnsignedOrNone ASTImporter::getFieldIndex(Decl *F) {
9394 assert(F && (isa<FieldDecl>(*F) || isa<IndirectFieldDecl>(*F)) &&
9395 "Try to get field index for non-field.");
9396
9397 auto *Owner = dyn_cast<RecordDecl>(Val: F->getDeclContext());
9398 if (!Owner)
9399 return std::nullopt;
9400
9401 unsigned Index = 0;
9402 for (const auto *D : Owner->decls()) {
9403 if (D == F)
9404 return Index;
9405
9406 if (isa<FieldDecl>(Val: *D) || isa<IndirectFieldDecl>(Val: *D))
9407 ++Index;
9408 }
9409
9410 llvm_unreachable("Field was not found in its parent context.");
9411
9412 return std::nullopt;
9413}
9414
9415ASTImporter::FoundDeclsTy
9416ASTImporter::findDeclsInToCtx(DeclContext *DC, DeclarationName Name) {
9417 // We search in the redecl context because of transparent contexts.
9418 // E.g. a simple C language enum is a transparent context:
9419 // enum E { A, B };
9420 // Now if we had a global variable in the TU
9421 // int A;
9422 // then the enum constant 'A' and the variable 'A' violates ODR.
9423 // We can diagnose this only if we search in the redecl context.
9424 DeclContext *ReDC = DC->getRedeclContext();
9425 if (SharedState->getLookupTable()) {
9426 if (ReDC->isNamespace()) {
9427 // Namespaces can be reopened.
9428 // Lookup table does not handle this, we must search here in all linked
9429 // namespaces.
9430 FoundDeclsTy Result;
9431 SmallVector<Decl *, 2> NSChain =
9432 getCanonicalForwardRedeclChain<NamespaceDecl>(
9433 D: dyn_cast<NamespaceDecl>(Val: ReDC));
9434 for (auto *D : NSChain) {
9435 ASTImporterLookupTable::LookupResult LookupResult =
9436 SharedState->getLookupTable()->lookup(DC: dyn_cast<NamespaceDecl>(Val: D),
9437 Name);
9438 Result.append(in_start: LookupResult.begin(), in_end: LookupResult.end());
9439 }
9440 return Result;
9441 } else {
9442 ASTImporterLookupTable::LookupResult LookupResult =
9443 SharedState->getLookupTable()->lookup(DC: ReDC, Name);
9444 return FoundDeclsTy(LookupResult.begin(), LookupResult.end());
9445 }
9446 } else {
9447 DeclContext::lookup_result NoloadLookupResult = ReDC->noload_lookup(Name);
9448 FoundDeclsTy Result(NoloadLookupResult.begin(), NoloadLookupResult.end());
9449 // We must search by the slow case of localUncachedLookup because that is
9450 // working even if there is no LookupPtr for the DC. We could use
9451 // DC::buildLookup() to create the LookupPtr, but that would load external
9452 // decls again, we must avoid that case.
9453 // Also, even if we had the LookupPtr, we must find Decls which are not
9454 // in the LookupPtr, so we need the slow case.
9455 // These cases are handled in ASTImporterLookupTable, but we cannot use
9456 // that with LLDB since that traverses through the AST which initiates the
9457 // load of external decls again via DC::decls(). And again, we must avoid
9458 // loading external decls during the import.
9459 if (Result.empty())
9460 ReDC->localUncachedLookup(Name, Results&: Result);
9461 return Result;
9462 }
9463}
9464
9465void ASTImporter::AddToLookupTable(Decl *ToD) {
9466 SharedState->addDeclToLookup(D: ToD);
9467}
9468
9469Expected<Decl *> ASTImporter::ImportImpl(Decl *FromD) {
9470 // Import the decl using ASTNodeImporter.
9471 ASTNodeImporter Importer(*this);
9472 return Importer.Visit(D: FromD);
9473}
9474
9475void ASTImporter::RegisterImportedDecl(Decl *FromD, Decl *ToD) {
9476 MapImported(From: FromD, To: ToD);
9477}
9478
9479llvm::Expected<ExprWithCleanups::CleanupObject>
9480ASTImporter::Import(ExprWithCleanups::CleanupObject From) {
9481 if (auto *CLE = From.dyn_cast<CompoundLiteralExpr *>()) {
9482 if (Expected<Expr *> R = Import(FromE: CLE))
9483 return ExprWithCleanups::CleanupObject(cast<CompoundLiteralExpr>(Val: *R));
9484 }
9485
9486 // FIXME: Handle BlockDecl when we implement importing BlockExpr in
9487 // ASTNodeImporter.
9488 return make_error<ASTImportError>(Args: ASTImportError::UnsupportedConstruct);
9489}
9490
9491ExpectedTypePtr ASTImporter::Import(const Type *FromT) {
9492 if (!FromT)
9493 return FromT;
9494
9495 // Check whether we've already imported this type.
9496 llvm::DenseMap<const Type *, const Type *>::iterator Pos =
9497 ImportedTypes.find(Val: FromT);
9498 if (Pos != ImportedTypes.end())
9499 return Pos->second;
9500
9501 // Import the type.
9502 ASTNodeImporter Importer(*this);
9503 ExpectedType ToTOrErr = Importer.Visit(T: FromT);
9504 if (!ToTOrErr)
9505 return ToTOrErr.takeError();
9506
9507 // Record the imported type.
9508 ImportedTypes[FromT] = ToTOrErr->getTypePtr();
9509
9510 return ToTOrErr->getTypePtr();
9511}
9512
9513Expected<QualType> ASTImporter::Import(QualType FromT) {
9514 if (FromT.isNull())
9515 return QualType{};
9516
9517 ExpectedTypePtr ToTyOrErr = Import(FromT: FromT.getTypePtr());
9518 if (!ToTyOrErr)
9519 return ToTyOrErr.takeError();
9520
9521 return ToContext.getQualifiedType(T: *ToTyOrErr, Qs: FromT.getLocalQualifiers());
9522}
9523
9524Expected<TypeSourceInfo *> ASTImporter::Import(TypeSourceInfo *FromTSI) {
9525 if (!FromTSI)
9526 return FromTSI;
9527
9528 // FIXME: For now we just create a "trivial" type source info based
9529 // on the type and a single location. Implement a real version of this.
9530 ExpectedType TOrErr = Import(FromT: FromTSI->getType());
9531 if (!TOrErr)
9532 return TOrErr.takeError();
9533 ExpectedSLoc BeginLocOrErr = Import(FromLoc: FromTSI->getTypeLoc().getBeginLoc());
9534 if (!BeginLocOrErr)
9535 return BeginLocOrErr.takeError();
9536
9537 return ToContext.getTrivialTypeSourceInfo(T: *TOrErr, Loc: *BeginLocOrErr);
9538}
9539
9540namespace {
9541// To use this object, it should be created before the new attribute is created,
9542// and destructed after it is created. The construction already performs the
9543// import of the data.
9544template <typename T> struct AttrArgImporter {
9545 AttrArgImporter(const AttrArgImporter<T> &) = delete;
9546 AttrArgImporter(AttrArgImporter<T> &&) = default;
9547 AttrArgImporter<T> &operator=(const AttrArgImporter<T> &) = delete;
9548 AttrArgImporter<T> &operator=(AttrArgImporter<T> &&) = default;
9549
9550 AttrArgImporter(ASTNodeImporter &I, Error &Err, const T &From)
9551 : To(I.importChecked(Err, From)) {}
9552
9553 const T &value() { return To; }
9554
9555private:
9556 T To;
9557};
9558
9559// To use this object, it should be created before the new attribute is created,
9560// and destructed after it is created. The construction already performs the
9561// import of the data. The array data is accessible in a pointer form, this form
9562// is used by the attribute classes. This object should be created once for the
9563// array data to be imported (the array size is not imported, just copied).
9564template <typename T> struct AttrArgArrayImporter {
9565 AttrArgArrayImporter(const AttrArgArrayImporter<T> &) = delete;
9566 AttrArgArrayImporter(AttrArgArrayImporter<T> &&) = default;
9567 AttrArgArrayImporter<T> &operator=(const AttrArgArrayImporter<T> &) = delete;
9568 AttrArgArrayImporter<T> &operator=(AttrArgArrayImporter<T> &&) = default;
9569
9570 AttrArgArrayImporter(ASTNodeImporter &I, Error &Err,
9571 const llvm::iterator_range<T *> &From,
9572 unsigned ArraySize) {
9573 if (Err)
9574 return;
9575 To.reserve(ArraySize);
9576 Err = I.ImportContainerChecked(From, To);
9577 }
9578
9579 T *value() { return To.data(); }
9580
9581private:
9582 llvm::SmallVector<T, 2> To;
9583};
9584
9585class AttrImporter {
9586 Error Err{Error::success()};
9587 Attr *ToAttr = nullptr;
9588 ASTImporter &Importer;
9589 ASTNodeImporter NImporter;
9590
9591public:
9592 AttrImporter(ASTImporter &I) : Importer(I), NImporter(I) {}
9593
9594 // Useful for accessing the imported attribute.
9595 template <typename T> T *castAttrAs() { return cast<T>(ToAttr); }
9596 template <typename T> const T *castAttrAs() const { return cast<T>(ToAttr); }
9597
9598 // Create an "importer" for an attribute parameter.
9599 // Result of the 'value()' of that object is to be passed to the function
9600 // 'importAttr', in the order that is expected by the attribute class.
9601 template <class T> AttrArgImporter<T> importArg(const T &From) {
9602 return AttrArgImporter<T>(NImporter, Err, From);
9603 }
9604
9605 // Create an "importer" for an attribute parameter that has array type.
9606 // Result of the 'value()' of that object is to be passed to the function
9607 // 'importAttr', then the size of the array as next argument.
9608 template <typename T>
9609 AttrArgArrayImporter<T> importArrayArg(const llvm::iterator_range<T *> &From,
9610 unsigned ArraySize) {
9611 return AttrArgArrayImporter<T>(NImporter, Err, From, ArraySize);
9612 }
9613
9614 // Create an attribute object with the specified arguments.
9615 // The 'FromAttr' is the original (not imported) attribute, the 'ImportedArg'
9616 // should be values that are passed to the 'Create' function of the attribute.
9617 // (The 'Create' with 'ASTContext' first and 'AttributeCommonInfo' last is
9618 // used here.) As much data is copied or imported from the old attribute
9619 // as possible. The passed arguments should be already imported.
9620 // If an import error happens, the internal error is set to it, and any
9621 // further import attempt is ignored.
9622 template <typename T, typename... Arg>
9623 void importAttr(const T *FromAttr, Arg &&...ImportedArg) {
9624 static_assert(std::is_base_of<Attr, T>::value,
9625 "T should be subclass of Attr.");
9626 assert(!ToAttr && "Use one AttrImporter to import one Attribute object.");
9627
9628 const IdentifierInfo *ToAttrName = Importer.Import(FromAttr->getAttrName());
9629 const IdentifierInfo *ToScopeName =
9630 Importer.Import(FromAttr->getScopeName());
9631 SourceRange ToAttrRange =
9632 NImporter.importChecked(Err, FromAttr->getRange());
9633 SourceLocation ToScopeLoc =
9634 NImporter.importChecked(Err, FromAttr->getScopeLoc());
9635
9636 if (Err)
9637 return;
9638
9639 AttributeCommonInfo ToI(
9640 ToAttrName, AttributeScopeInfo(ToScopeName, ToScopeLoc), ToAttrRange,
9641 FromAttr->getParsedKind(), FromAttr->getForm());
9642 // The "SemanticSpelling" is not needed to be passed to the constructor.
9643 // That value is recalculated from the SpellingListIndex if needed.
9644 ToAttr = T::Create(Importer.getToContext(),
9645 std::forward<Arg>(ImportedArg)..., ToI);
9646
9647 ToAttr->setImplicit(FromAttr->isImplicit());
9648 ToAttr->setPackExpansion(FromAttr->isPackExpansion());
9649 if (auto *ToInheritableAttr = dyn_cast<InheritableAttr>(Val: ToAttr))
9650 ToInheritableAttr->setInherited(FromAttr->isInherited());
9651 }
9652
9653 // Create a clone of the 'FromAttr' and import its source range only.
9654 // This causes objects with invalid references to be created if the 'FromAttr'
9655 // contains other data that should be imported.
9656 void cloneAttr(const Attr *FromAttr) {
9657 assert(!ToAttr && "Use one AttrImporter to import one Attribute object.");
9658
9659 SourceRange ToRange = NImporter.importChecked(Err, From: FromAttr->getRange());
9660 if (Err)
9661 return;
9662
9663 ToAttr = FromAttr->clone(C&: Importer.getToContext());
9664 ToAttr->setRange(ToRange);
9665 ToAttr->setAttrName(Importer.Import(FromId: FromAttr->getAttrName()));
9666 }
9667
9668 // Get the result of the previous import attempt (can be used only once).
9669 llvm::Expected<Attr *> getResult() && {
9670 if (Err)
9671 return std::move(Err);
9672 assert(ToAttr && "Attribute should be created.");
9673 return ToAttr;
9674 }
9675};
9676} // namespace
9677
9678Expected<Attr *> ASTImporter::Import(const Attr *FromAttr) {
9679 AttrImporter AI(*this);
9680
9681 // FIXME: Is there some kind of AttrVisitor to use here?
9682 switch (FromAttr->getKind()) {
9683 case attr::Aligned: {
9684 auto *From = cast<AlignedAttr>(Val: FromAttr);
9685 if (From->isAlignmentExpr())
9686 AI.importAttr(FromAttr: From, ImportedArg: true, ImportedArg: AI.importArg(From: From->getAlignmentExpr()).value());
9687 else
9688 AI.importAttr(FromAttr: From, ImportedArg: false,
9689 ImportedArg: AI.importArg(From: From->getAlignmentType()).value());
9690 break;
9691 }
9692
9693 case attr::AlignValue: {
9694 auto *From = cast<AlignValueAttr>(Val: FromAttr);
9695 AI.importAttr(FromAttr: From, ImportedArg: AI.importArg(From: From->getAlignment()).value());
9696 break;
9697 }
9698
9699 case attr::Format: {
9700 const auto *From = cast<FormatAttr>(Val: FromAttr);
9701 AI.importAttr(FromAttr: From, ImportedArg: Import(FromId: From->getType()), ImportedArg: From->getFormatIdx(),
9702 ImportedArg: From->getFirstArg());
9703 break;
9704 }
9705
9706 case attr::EnableIf: {
9707 const auto *From = cast<EnableIfAttr>(Val: FromAttr);
9708 AI.importAttr(FromAttr: From, ImportedArg: AI.importArg(From: From->getCond()).value(),
9709 ImportedArg: From->getMessage());
9710 break;
9711 }
9712
9713 case attr::AssertCapability: {
9714 const auto *From = cast<AssertCapabilityAttr>(Val: FromAttr);
9715 AI.importAttr(FromAttr: From,
9716 ImportedArg: AI.importArrayArg(From: From->args(), ArraySize: From->args_size()).value(),
9717 ImportedArg: From->args_size());
9718 break;
9719 }
9720 case attr::AcquireCapability: {
9721 const auto *From = cast<AcquireCapabilityAttr>(Val: FromAttr);
9722 AI.importAttr(FromAttr: From,
9723 ImportedArg: AI.importArrayArg(From: From->args(), ArraySize: From->args_size()).value(),
9724 ImportedArg: From->args_size());
9725 break;
9726 }
9727 case attr::TryAcquireCapability: {
9728 const auto *From = cast<TryAcquireCapabilityAttr>(Val: FromAttr);
9729 AI.importAttr(FromAttr: From, ImportedArg: AI.importArg(From: From->getSuccessValue()).value(),
9730 ImportedArg: AI.importArrayArg(From: From->args(), ArraySize: From->args_size()).value(),
9731 ImportedArg: From->args_size());
9732 break;
9733 }
9734 case attr::ReleaseCapability: {
9735 const auto *From = cast<ReleaseCapabilityAttr>(Val: FromAttr);
9736 AI.importAttr(FromAttr: From,
9737 ImportedArg: AI.importArrayArg(From: From->args(), ArraySize: From->args_size()).value(),
9738 ImportedArg: From->args_size());
9739 break;
9740 }
9741 case attr::RequiresCapability: {
9742 const auto *From = cast<RequiresCapabilityAttr>(Val: FromAttr);
9743 AI.importAttr(FromAttr: From,
9744 ImportedArg: AI.importArrayArg(From: From->args(), ArraySize: From->args_size()).value(),
9745 ImportedArg: From->args_size());
9746 break;
9747 }
9748 case attr::GuardedBy: {
9749 const auto *From = cast<GuardedByAttr>(Val: FromAttr);
9750 AI.importAttr(FromAttr: From, ImportedArg: AI.importArg(From: From->getArg()).value());
9751 break;
9752 }
9753 case attr::PtGuardedBy: {
9754 const auto *From = cast<PtGuardedByAttr>(Val: FromAttr);
9755 AI.importAttr(FromAttr: From, ImportedArg: AI.importArg(From: From->getArg()).value());
9756 break;
9757 }
9758 case attr::AcquiredAfter: {
9759 const auto *From = cast<AcquiredAfterAttr>(Val: FromAttr);
9760 AI.importAttr(FromAttr: From,
9761 ImportedArg: AI.importArrayArg(From: From->args(), ArraySize: From->args_size()).value(),
9762 ImportedArg: From->args_size());
9763 break;
9764 }
9765 case attr::AcquiredBefore: {
9766 const auto *From = cast<AcquiredBeforeAttr>(Val: FromAttr);
9767 AI.importAttr(FromAttr: From,
9768 ImportedArg: AI.importArrayArg(From: From->args(), ArraySize: From->args_size()).value(),
9769 ImportedArg: From->args_size());
9770 break;
9771 }
9772 case attr::LockReturned: {
9773 const auto *From = cast<LockReturnedAttr>(Val: FromAttr);
9774 AI.importAttr(FromAttr: From, ImportedArg: AI.importArg(From: From->getArg()).value());
9775 break;
9776 }
9777 case attr::LocksExcluded: {
9778 const auto *From = cast<LocksExcludedAttr>(Val: FromAttr);
9779 AI.importAttr(FromAttr: From,
9780 ImportedArg: AI.importArrayArg(From: From->args(), ArraySize: From->args_size()).value(),
9781 ImportedArg: From->args_size());
9782 break;
9783 }
9784 default: {
9785 // The default branch works for attributes that have no arguments to import.
9786 // FIXME: Handle every attribute type that has arguments of type to import
9787 // (most often Expr* or Decl* or type) in the switch above.
9788 AI.cloneAttr(FromAttr);
9789 break;
9790 }
9791 }
9792
9793 return std::move(AI).getResult();
9794}
9795
9796Decl *ASTImporter::GetAlreadyImportedOrNull(const Decl *FromD) const {
9797 return ImportedDecls.lookup(Val: FromD);
9798}
9799
9800TranslationUnitDecl *ASTImporter::GetFromTU(Decl *ToD) {
9801 auto FromDPos = ImportedFromDecls.find(Val: ToD);
9802 if (FromDPos == ImportedFromDecls.end())
9803 return nullptr;
9804 return FromDPos->second->getTranslationUnitDecl();
9805}
9806
9807Expected<Decl *> ASTImporter::Import(Decl *FromD) {
9808 if (!FromD)
9809 return nullptr;
9810
9811 // Push FromD to the stack, and remove that when we return.
9812 ImportPath.push(D: FromD);
9813 llvm::scope_exit ImportPathBuilder([this]() { ImportPath.pop(); });
9814
9815 // Check whether there was a previous failed import.
9816 // If yes return the existing error.
9817 if (auto Error = getImportDeclErrorIfAny(FromD))
9818 return make_error<ASTImportError>(Args&: *Error);
9819
9820 // Check whether we've already imported this declaration.
9821 Decl *ToD = GetAlreadyImportedOrNull(FromD);
9822 if (ToD) {
9823 // Already imported (possibly from another TU) and with an error.
9824 if (auto Error = SharedState->getImportDeclErrorIfAny(ToD)) {
9825 setImportDeclError(From: FromD, Error: *Error);
9826 return make_error<ASTImportError>(Args&: *Error);
9827 }
9828
9829 // If FromD has some updated flags after last import, apply it.
9830 updateFlags(From: FromD, To: ToD);
9831 // If we encounter a cycle during an import then we save the relevant part
9832 // of the import path associated to the Decl.
9833 if (ImportPath.hasCycleAtBack())
9834 SavedImportPaths[FromD].push_back(Elt: ImportPath.copyCycleAtBack());
9835 return ToD;
9836 }
9837
9838 // Import the declaration.
9839 ExpectedDecl ToDOrErr = ImportImpl(FromD);
9840 if (!ToDOrErr) {
9841 // Failed to import.
9842
9843 auto Pos = ImportedDecls.find(Val: FromD);
9844 if (Pos != ImportedDecls.end()) {
9845 // Import failed after the object was created.
9846 // Remove all references to it.
9847 auto *ToD = Pos->second;
9848 ImportedDecls.erase(I: Pos);
9849
9850 // ImportedDecls and ImportedFromDecls are not symmetric. It may happen
9851 // (e.g. with namespaces) that several decls from the 'from' context are
9852 // mapped to the same decl in the 'to' context. If we removed entries
9853 // from the LookupTable here then we may end up removing them multiple
9854 // times.
9855
9856 // The Lookuptable contains decls only which are in the 'to' context.
9857 // Remove from the Lookuptable only if it is *imported* into the 'to'
9858 // context (and do not remove it if it was added during the initial
9859 // traverse of the 'to' context).
9860 auto PosF = ImportedFromDecls.find(Val: ToD);
9861 if (PosF != ImportedFromDecls.end()) {
9862 // In the case of TypedefNameDecl we create the Decl first and only
9863 // then we import and set its DeclContext. So, the DC might not be set
9864 // when we reach here.
9865 if (ToD->getDeclContext())
9866 SharedState->removeDeclFromLookup(D: ToD);
9867 ImportedFromDecls.erase(I: PosF);
9868 }
9869
9870 // FIXME: AST may contain remaining references to the failed object.
9871 // However, the ImportDeclErrors in the shared state contains all the
9872 // failed objects together with their error.
9873 }
9874
9875 // Error encountered for the first time.
9876 // After takeError the error is not usable any more in ToDOrErr.
9877 // Get a copy of the error object (any more simple solution for this?).
9878 ASTImportError ErrOut;
9879 handleAllErrors(E: ToDOrErr.takeError(),
9880 Handlers: [&ErrOut](const ASTImportError &E) { ErrOut = E; });
9881 setImportDeclError(From: FromD, Error: ErrOut);
9882 // Set the error for the mapped to Decl, which is in the "to" context.
9883 if (Pos != ImportedDecls.end())
9884 SharedState->setImportDeclError(To: Pos->second, Error: ErrOut);
9885
9886 // Set the error for all nodes which have been created before we
9887 // recognized the error.
9888 for (const auto &Path : SavedImportPaths[FromD]) {
9889 // The import path contains import-dependency nodes first.
9890 // Save the node that was imported as dependency of the current node.
9891 Decl *PrevFromDi = FromD;
9892 for (Decl *FromDi : Path) {
9893 // Begin and end of the path equals 'FromD', skip it.
9894 if (FromDi == FromD)
9895 continue;
9896 // We should not set import error on a node and all following nodes in
9897 // the path if child import errors are ignored.
9898 if (ChildErrorHandlingStrategy(FromDi).ignoreChildErrorOnParent(
9899 FromChildD: PrevFromDi))
9900 break;
9901 PrevFromDi = FromDi;
9902 setImportDeclError(From: FromDi, Error: ErrOut);
9903 //FIXME Should we remove these Decls from ImportedDecls?
9904 // Set the error for the mapped to Decl, which is in the "to" context.
9905 auto Ii = ImportedDecls.find(Val: FromDi);
9906 if (Ii != ImportedDecls.end())
9907 SharedState->setImportDeclError(To: Ii->second, Error: ErrOut);
9908 // FIXME Should we remove these Decls from the LookupTable,
9909 // and from ImportedFromDecls?
9910 }
9911 }
9912 SavedImportPaths.erase(Val: FromD);
9913
9914 // Do not return ToDOrErr, error was taken out of it.
9915 return make_error<ASTImportError>(Args&: ErrOut);
9916 }
9917
9918 ToD = *ToDOrErr;
9919
9920 // FIXME: Handle the "already imported with error" case. We can get here
9921 // nullptr only if GetImportedOrCreateDecl returned nullptr (after a
9922 // previously failed create was requested).
9923 // Later GetImportedOrCreateDecl can be updated to return the error.
9924 if (!ToD) {
9925 auto Err = getImportDeclErrorIfAny(FromD);
9926 assert(Err);
9927 return make_error<ASTImportError>(Args&: *Err);
9928 }
9929
9930 // We could import from the current TU without error. But previously we
9931 // already had imported a Decl as `ToD` from another TU (with another
9932 // ASTImporter object) and with an error.
9933 if (auto Error = SharedState->getImportDeclErrorIfAny(ToD)) {
9934 setImportDeclError(From: FromD, Error: *Error);
9935 return make_error<ASTImportError>(Args&: *Error);
9936 }
9937 // Make sure that ImportImpl registered the imported decl.
9938 assert(ImportedDecls.count(FromD) != 0 && "Missing call to MapImported?");
9939
9940 if (FromD->hasAttrs())
9941 for (const Attr *FromAttr : FromD->getAttrs()) {
9942 auto ToAttrOrErr = Import(FromAttr);
9943 if (ToAttrOrErr)
9944 ToD->addAttr(A: *ToAttrOrErr);
9945 else
9946 return ToAttrOrErr.takeError();
9947 }
9948
9949 // Notify subclasses.
9950 Imported(From: FromD, To: ToD);
9951
9952 updateFlags(From: FromD, To: ToD);
9953 SavedImportPaths.erase(Val: FromD);
9954 return ToDOrErr;
9955}
9956
9957llvm::Expected<InheritedConstructor>
9958ASTImporter::Import(const InheritedConstructor &From) {
9959 return ASTNodeImporter(*this).ImportInheritedConstructor(From);
9960}
9961
9962Expected<DeclContext *> ASTImporter::ImportContext(DeclContext *FromDC) {
9963 if (!FromDC)
9964 return FromDC;
9965
9966 ExpectedDecl ToDCOrErr = Import(FromD: cast<Decl>(Val: FromDC));
9967 if (!ToDCOrErr)
9968 return ToDCOrErr.takeError();
9969 auto *ToDC = cast<DeclContext>(Val: *ToDCOrErr);
9970
9971 // When we're using a record/enum/Objective-C class/protocol as a context, we
9972 // need it to have a definition.
9973 if (auto *ToRecord = dyn_cast<RecordDecl>(Val: ToDC)) {
9974 auto *FromRecord = cast<RecordDecl>(Val: FromDC);
9975 if (ToRecord->isCompleteDefinition())
9976 return ToDC;
9977
9978 // If FromRecord is not defined we need to force it to be.
9979 // Simply calling CompleteDecl(...) for a RecordDecl will break some cases
9980 // it will start the definition but we never finish it.
9981 // If there are base classes they won't be imported and we will
9982 // be missing anything that we inherit from those bases.
9983 if (FromRecord->getASTContext().getExternalSource() &&
9984 !FromRecord->isCompleteDefinition())
9985 FromRecord->getASTContext().getExternalSource()->CompleteType(Tag: FromRecord);
9986
9987 if (FromRecord->isCompleteDefinition())
9988 if (Error Err = ASTNodeImporter(*this).ImportDefinition(
9989 From: FromRecord, To: ToRecord, Kind: ASTNodeImporter::IDK_Basic))
9990 return std::move(Err);
9991 } else if (auto *ToEnum = dyn_cast<EnumDecl>(Val: ToDC)) {
9992 auto *FromEnum = cast<EnumDecl>(Val: FromDC);
9993 if (ToEnum->isCompleteDefinition()) {
9994 // Do nothing.
9995 } else if (FromEnum->isCompleteDefinition()) {
9996 if (Error Err = ASTNodeImporter(*this).ImportDefinition(
9997 From: FromEnum, To: ToEnum, Kind: ASTNodeImporter::IDK_Basic))
9998 return std::move(Err);
9999 } else {
10000 CompleteDecl(D: ToEnum);
10001 }
10002 } else if (auto *ToClass = dyn_cast<ObjCInterfaceDecl>(Val: ToDC)) {
10003 auto *FromClass = cast<ObjCInterfaceDecl>(Val: FromDC);
10004 if (ToClass->getDefinition()) {
10005 // Do nothing.
10006 } else if (ObjCInterfaceDecl *FromDef = FromClass->getDefinition()) {
10007 if (Error Err = ASTNodeImporter(*this).ImportDefinition(
10008 From: FromDef, To: ToClass, Kind: ASTNodeImporter::IDK_Basic))
10009 return std::move(Err);
10010 } else {
10011 CompleteDecl(D: ToClass);
10012 }
10013 } else if (auto *ToProto = dyn_cast<ObjCProtocolDecl>(Val: ToDC)) {
10014 auto *FromProto = cast<ObjCProtocolDecl>(Val: FromDC);
10015 if (ToProto->getDefinition()) {
10016 // Do nothing.
10017 } else if (ObjCProtocolDecl *FromDef = FromProto->getDefinition()) {
10018 if (Error Err = ASTNodeImporter(*this).ImportDefinition(
10019 From: FromDef, To: ToProto, Kind: ASTNodeImporter::IDK_Basic))
10020 return std::move(Err);
10021 } else {
10022 CompleteDecl(D: ToProto);
10023 }
10024 }
10025
10026 return ToDC;
10027}
10028
10029Expected<Expr *> ASTImporter::Import(Expr *FromE) {
10030 if (ExpectedStmt ToSOrErr = Import(FromS: cast_or_null<Stmt>(Val: FromE)))
10031 return cast_or_null<Expr>(Val: *ToSOrErr);
10032 else
10033 return ToSOrErr.takeError();
10034}
10035
10036Expected<Stmt *> ASTImporter::Import(Stmt *FromS) {
10037 if (!FromS)
10038 return nullptr;
10039
10040 // Check whether we've already imported this statement.
10041 llvm::DenseMap<Stmt *, Stmt *>::iterator Pos = ImportedStmts.find(Val: FromS);
10042 if (Pos != ImportedStmts.end())
10043 return Pos->second;
10044
10045 // Import the statement.
10046 ASTNodeImporter Importer(*this);
10047 ExpectedStmt ToSOrErr = Importer.Visit(S: FromS);
10048 if (!ToSOrErr)
10049 return ToSOrErr;
10050
10051 if (auto *ToE = dyn_cast<Expr>(Val: *ToSOrErr)) {
10052 auto *FromE = cast<Expr>(Val: FromS);
10053 // Copy ExprBitfields, which may not be handled in Expr subclasses
10054 // constructors.
10055 ToE->setValueKind(FromE->getValueKind());
10056 ToE->setObjectKind(FromE->getObjectKind());
10057 ToE->setDependence(FromE->getDependence());
10058 }
10059
10060 // Record the imported statement object.
10061 ImportedStmts[FromS] = *ToSOrErr;
10062 return ToSOrErr;
10063}
10064
10065Expected<NestedNameSpecifier> ASTImporter::Import(NestedNameSpecifier FromNNS) {
10066 switch (FromNNS.getKind()) {
10067 case NestedNameSpecifier::Kind::Null:
10068 case NestedNameSpecifier::Kind::Global:
10069 return FromNNS;
10070 case NestedNameSpecifier::Kind::Namespace: {
10071 auto [Namespace, Prefix] = FromNNS.getAsNamespaceAndPrefix();
10072 auto NSOrErr = Import(FromD: Namespace);
10073 if (!NSOrErr)
10074 return NSOrErr.takeError();
10075 auto PrefixOrErr = Import(FromNNS: Prefix);
10076 if (!PrefixOrErr)
10077 return PrefixOrErr.takeError();
10078 return NestedNameSpecifier(ToContext, cast<NamespaceBaseDecl>(Val: *NSOrErr),
10079 *PrefixOrErr);
10080 }
10081 case NestedNameSpecifier::Kind::MicrosoftSuper:
10082 if (ExpectedDecl RDOrErr = Import(FromD: FromNNS.getAsMicrosoftSuper()))
10083 return NestedNameSpecifier(cast<CXXRecordDecl>(Val: *RDOrErr));
10084 else
10085 return RDOrErr.takeError();
10086 case NestedNameSpecifier::Kind::Type:
10087 if (ExpectedTypePtr TyOrErr = Import(FromT: FromNNS.getAsType())) {
10088 return NestedNameSpecifier(*TyOrErr);
10089 } else {
10090 return TyOrErr.takeError();
10091 }
10092 }
10093 llvm_unreachable("Invalid nested name specifier kind");
10094}
10095
10096Expected<NestedNameSpecifierLoc>
10097ASTImporter::Import(NestedNameSpecifierLoc FromNNS) {
10098 // Copied from NestedNameSpecifier mostly.
10099 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
10100 NestedNameSpecifierLoc NNS = FromNNS;
10101
10102 // Push each of the nested-name-specifiers's onto a stack for
10103 // serialization in reverse order.
10104 while (NNS) {
10105 NestedNames.push_back(Elt: NNS);
10106 NNS = NNS.getAsNamespaceAndPrefix().Prefix;
10107 }
10108
10109 NestedNameSpecifierLocBuilder Builder;
10110
10111 while (!NestedNames.empty()) {
10112 NNS = NestedNames.pop_back_val();
10113 NestedNameSpecifier Spec = std::nullopt;
10114 if (Error Err = importInto(To&: Spec, From: NNS.getNestedNameSpecifier()))
10115 return std::move(Err);
10116
10117 NestedNameSpecifier::Kind Kind = Spec.getKind();
10118
10119 SourceLocation ToLocalBeginLoc, ToLocalEndLoc;
10120 if (Kind != NestedNameSpecifier::Kind::MicrosoftSuper) {
10121 if (Error Err = importInto(To&: ToLocalBeginLoc, From: NNS.getLocalBeginLoc()))
10122 return std::move(Err);
10123
10124 if (Kind != NestedNameSpecifier::Kind::Global)
10125 if (Error Err = importInto(To&: ToLocalEndLoc, From: NNS.getLocalEndLoc()))
10126 return std::move(Err);
10127 }
10128
10129 switch (Kind) {
10130 case NestedNameSpecifier::Kind::Namespace:
10131 Builder.Extend(Context&: getToContext(), Namespace: Spec.getAsNamespaceAndPrefix().Namespace,
10132 NamespaceLoc: ToLocalBeginLoc, ColonColonLoc: ToLocalEndLoc);
10133 break;
10134
10135 case NestedNameSpecifier::Kind::Type: {
10136 SourceLocation ToTLoc;
10137 if (Error Err = importInto(To&: ToTLoc, From: NNS.castAsTypeLoc().getBeginLoc()))
10138 return std::move(Err);
10139 TypeSourceInfo *TSI = getToContext().getTrivialTypeSourceInfo(
10140 T: QualType(Spec.getAsType(), 0), Loc: ToTLoc);
10141 Builder.Make(Context&: getToContext(), TL: TSI->getTypeLoc(), ColonColonLoc: ToLocalEndLoc);
10142 break;
10143 }
10144
10145 case NestedNameSpecifier::Kind::Global:
10146 Builder.MakeGlobal(Context&: getToContext(), ColonColonLoc: ToLocalBeginLoc);
10147 break;
10148
10149 case NestedNameSpecifier::Kind::MicrosoftSuper: {
10150 auto ToSourceRangeOrErr = Import(FromRange: NNS.getSourceRange());
10151 if (!ToSourceRangeOrErr)
10152 return ToSourceRangeOrErr.takeError();
10153
10154 Builder.MakeMicrosoftSuper(Context&: getToContext(), RD: Spec.getAsMicrosoftSuper(),
10155 SuperLoc: ToSourceRangeOrErr->getBegin(),
10156 ColonColonLoc: ToSourceRangeOrErr->getEnd());
10157 break;
10158 }
10159 case NestedNameSpecifier::Kind::Null:
10160 llvm_unreachable("unexpected null nested name specifier");
10161 }
10162 }
10163
10164 return Builder.getWithLocInContext(Context&: getToContext());
10165}
10166
10167Expected<TemplateName> ASTImporter::Import(TemplateName From) {
10168 switch (From.getKind()) {
10169 case TemplateName::Template:
10170 if (ExpectedDecl ToTemplateOrErr = Import(FromD: From.getAsTemplateDecl()))
10171 return TemplateName(cast<TemplateDecl>(Val: (*ToTemplateOrErr)->getCanonicalDecl()));
10172 else
10173 return ToTemplateOrErr.takeError();
10174
10175 case TemplateName::OverloadedTemplate: {
10176 OverloadedTemplateStorage *FromStorage = From.getAsOverloadedTemplate();
10177 UnresolvedSet<2> ToTemplates;
10178 for (auto *I : *FromStorage) {
10179 if (auto ToOrErr = Import(FromD: I))
10180 ToTemplates.addDecl(D: cast<NamedDecl>(Val: *ToOrErr));
10181 else
10182 return ToOrErr.takeError();
10183 }
10184 return ToContext.getOverloadedTemplateName(Begin: ToTemplates.begin(),
10185 End: ToTemplates.end());
10186 }
10187
10188 case TemplateName::AssumedTemplate: {
10189 AssumedTemplateStorage *FromStorage = From.getAsAssumedTemplateName();
10190 auto DeclNameOrErr = Import(FromName: FromStorage->getDeclName());
10191 if (!DeclNameOrErr)
10192 return DeclNameOrErr.takeError();
10193 return ToContext.getAssumedTemplateName(Name: *DeclNameOrErr);
10194 }
10195
10196 case TemplateName::QualifiedTemplate: {
10197 QualifiedTemplateName *QTN = From.getAsQualifiedTemplateName();
10198 auto QualifierOrErr = Import(FromNNS: QTN->getQualifier());
10199 if (!QualifierOrErr)
10200 return QualifierOrErr.takeError();
10201 auto TNOrErr = Import(From: QTN->getUnderlyingTemplate());
10202 if (!TNOrErr)
10203 return TNOrErr.takeError();
10204 return ToContext.getQualifiedTemplateName(
10205 Qualifier: *QualifierOrErr, TemplateKeyword: QTN->hasTemplateKeyword(), Template: *TNOrErr);
10206 }
10207
10208 case TemplateName::DependentTemplate: {
10209 DependentTemplateName *DTN = From.getAsDependentTemplateName();
10210 auto QualifierOrErr = Import(FromNNS: DTN->getQualifier());
10211 if (!QualifierOrErr)
10212 return QualifierOrErr.takeError();
10213 return ToContext.getDependentTemplateName(
10214 Name: {*QualifierOrErr, Import(FromIO: DTN->getName()), DTN->hasTemplateKeyword()});
10215 }
10216
10217 case TemplateName::SubstTemplateTemplateParm: {
10218 SubstTemplateTemplateParmStorage *Subst =
10219 From.getAsSubstTemplateTemplateParm();
10220 auto ReplacementOrErr = Import(From: Subst->getReplacement());
10221 if (!ReplacementOrErr)
10222 return ReplacementOrErr.takeError();
10223
10224 auto AssociatedDeclOrErr = Import(FromD: Subst->getAssociatedDecl());
10225 if (!AssociatedDeclOrErr)
10226 return AssociatedDeclOrErr.takeError();
10227
10228 return ToContext.getSubstTemplateTemplateParm(
10229 replacement: *ReplacementOrErr, AssociatedDecl: *AssociatedDeclOrErr, Index: Subst->getIndex(),
10230 PackIndex: Subst->getPackIndex(), Final: Subst->getFinal());
10231 }
10232
10233 case TemplateName::SubstTemplateTemplateParmPack: {
10234 SubstTemplateTemplateParmPackStorage *SubstPack =
10235 From.getAsSubstTemplateTemplateParmPack();
10236 ASTNodeImporter Importer(*this);
10237 auto ArgPackOrErr =
10238 Importer.ImportTemplateArgument(From: SubstPack->getArgumentPack());
10239 if (!ArgPackOrErr)
10240 return ArgPackOrErr.takeError();
10241
10242 auto AssociatedDeclOrErr = Import(FromD: SubstPack->getAssociatedDecl());
10243 if (!AssociatedDeclOrErr)
10244 return AssociatedDeclOrErr.takeError();
10245
10246 return ToContext.getSubstTemplateTemplateParmPack(
10247 ArgPack: *ArgPackOrErr, AssociatedDecl: *AssociatedDeclOrErr, Index: SubstPack->getIndex(),
10248 Final: SubstPack->getFinal());
10249 }
10250 case TemplateName::UsingTemplate: {
10251 auto UsingOrError = Import(FromD: From.getAsUsingShadowDecl());
10252 if (!UsingOrError)
10253 return UsingOrError.takeError();
10254 return TemplateName(cast<UsingShadowDecl>(Val: *UsingOrError));
10255 }
10256 case TemplateName::DeducedTemplate:
10257 llvm_unreachable("Unexpected DeducedTemplate");
10258 }
10259
10260 llvm_unreachable("Invalid template name kind");
10261}
10262
10263Expected<SourceLocation> ASTImporter::Import(SourceLocation FromLoc) {
10264 if (FromLoc.isInvalid())
10265 return SourceLocation{};
10266
10267 SourceManager &FromSM = FromContext.getSourceManager();
10268 bool IsBuiltin = FromSM.isWrittenInBuiltinFile(Loc: FromLoc);
10269
10270 FileIDAndOffset Decomposed = FromSM.getDecomposedLoc(Loc: FromLoc);
10271 Expected<FileID> ToFileIDOrErr = Import(Decomposed.first, IsBuiltin);
10272 if (!ToFileIDOrErr)
10273 return ToFileIDOrErr.takeError();
10274 SourceManager &ToSM = ToContext.getSourceManager();
10275 return ToSM.getComposedLoc(FID: *ToFileIDOrErr, Offset: Decomposed.second);
10276}
10277
10278Expected<SourceRange> ASTImporter::Import(SourceRange FromRange) {
10279 SourceLocation ToBegin, ToEnd;
10280 if (Error Err = importInto(To&: ToBegin, From: FromRange.getBegin()))
10281 return std::move(Err);
10282 if (Error Err = importInto(To&: ToEnd, From: FromRange.getEnd()))
10283 return std::move(Err);
10284
10285 return SourceRange(ToBegin, ToEnd);
10286}
10287
10288Expected<FileID> ASTImporter::Import(FileID FromID, bool IsBuiltin) {
10289 llvm::DenseMap<FileID, FileID>::iterator Pos = ImportedFileIDs.find(Val: FromID);
10290 if (Pos != ImportedFileIDs.end())
10291 return Pos->second;
10292
10293 SourceManager &FromSM = FromContext.getSourceManager();
10294 SourceManager &ToSM = ToContext.getSourceManager();
10295 const SrcMgr::SLocEntry &FromSLoc = FromSM.getSLocEntry(FID: FromID);
10296
10297 // Map the FromID to the "to" source manager.
10298 FileID ToID;
10299 if (FromSLoc.isExpansion()) {
10300 const SrcMgr::ExpansionInfo &FromEx = FromSLoc.getExpansion();
10301 ExpectedSLoc ToSpLoc = Import(FromLoc: FromEx.getSpellingLoc());
10302 if (!ToSpLoc)
10303 return ToSpLoc.takeError();
10304 ExpectedSLoc ToExLocS = Import(FromLoc: FromEx.getExpansionLocStart());
10305 if (!ToExLocS)
10306 return ToExLocS.takeError();
10307 unsigned ExLength = FromSM.getFileIDSize(FID: FromID);
10308 SourceLocation MLoc;
10309 if (FromEx.isMacroArgExpansion()) {
10310 MLoc = ToSM.createMacroArgExpansionLoc(SpellingLoc: *ToSpLoc, ExpansionLoc: *ToExLocS, Length: ExLength);
10311 } else {
10312 if (ExpectedSLoc ToExLocE = Import(FromLoc: FromEx.getExpansionLocEnd()))
10313 MLoc = ToSM.createExpansionLoc(SpellingLoc: *ToSpLoc, ExpansionLocStart: *ToExLocS, ExpansionLocEnd: *ToExLocE, Length: ExLength,
10314 ExpansionIsTokenRange: FromEx.isExpansionTokenRange());
10315 else
10316 return ToExLocE.takeError();
10317 }
10318 ToID = ToSM.getFileID(SpellingLoc: MLoc);
10319 } else {
10320 const SrcMgr::ContentCache *Cache = &FromSLoc.getFile().getContentCache();
10321
10322 if (!IsBuiltin && !Cache->BufferOverridden) {
10323 // Include location of this file.
10324 ExpectedSLoc ToIncludeLoc = Import(FromLoc: FromSLoc.getFile().getIncludeLoc());
10325 if (!ToIncludeLoc)
10326 return ToIncludeLoc.takeError();
10327
10328 // Every FileID that is not the main FileID needs to have a valid include
10329 // location so that the include chain points to the main FileID. When
10330 // importing the main FileID (which has no include location), we need to
10331 // create a fake include location in the main file to keep this property
10332 // intact.
10333 SourceLocation ToIncludeLocOrFakeLoc = *ToIncludeLoc;
10334 if (FromID == FromSM.getMainFileID())
10335 ToIncludeLocOrFakeLoc = ToSM.getLocForStartOfFile(FID: ToSM.getMainFileID());
10336
10337 if (Cache->OrigEntry && Cache->OrigEntry->getDir()) {
10338 // FIXME: We probably want to use getVirtualFileRef(), so we don't hit
10339 // the disk again
10340 // FIXME: We definitely want to re-use the existing MemoryBuffer, rather
10341 // than mmap the files several times.
10342 auto Entry =
10343 ToFileManager.getOptionalFileRef(Filename: Cache->OrigEntry->getName());
10344 // FIXME: The filename may be a virtual name that does probably not
10345 // point to a valid file and we get no Entry here. In this case try with
10346 // the memory buffer below.
10347 if (Entry)
10348 ToID = ToSM.createFileID(SourceFile: *Entry, IncludePos: ToIncludeLocOrFakeLoc,
10349 FileCharacter: FromSLoc.getFile().getFileCharacteristic());
10350 }
10351 }
10352
10353 if (ToID.isInvalid() || IsBuiltin) {
10354 // FIXME: We want to re-use the existing MemoryBuffer!
10355 std::optional<llvm::MemoryBufferRef> FromBuf =
10356 Cache->getBufferOrNone(Diag&: FromContext.getDiagnostics(),
10357 FM&: FromSM.getFileManager(), Loc: SourceLocation{});
10358 if (!FromBuf)
10359 return llvm::make_error<ASTImportError>(Args: ASTImportError::Unknown);
10360
10361 std::unique_ptr<llvm::MemoryBuffer> ToBuf =
10362 llvm::MemoryBuffer::getMemBufferCopy(InputData: FromBuf->getBuffer(),
10363 BufferName: FromBuf->getBufferIdentifier());
10364 ToID = ToSM.createFileID(Buffer: std::move(ToBuf),
10365 FileCharacter: FromSLoc.getFile().getFileCharacteristic());
10366 }
10367 }
10368
10369 assert(ToID.isValid() && "Unexpected invalid fileID was created.");
10370
10371 ImportedFileIDs[FromID] = ToID;
10372 return ToID;
10373}
10374
10375Expected<CXXCtorInitializer *> ASTImporter::Import(CXXCtorInitializer *From) {
10376 ExpectedExpr ToExprOrErr = Import(FromE: From->getInit());
10377 if (!ToExprOrErr)
10378 return ToExprOrErr.takeError();
10379
10380 auto LParenLocOrErr = Import(FromLoc: From->getLParenLoc());
10381 if (!LParenLocOrErr)
10382 return LParenLocOrErr.takeError();
10383
10384 auto RParenLocOrErr = Import(FromLoc: From->getRParenLoc());
10385 if (!RParenLocOrErr)
10386 return RParenLocOrErr.takeError();
10387
10388 if (From->isBaseInitializer()) {
10389 auto ToTInfoOrErr = Import(FromTSI: From->getTypeSourceInfo());
10390 if (!ToTInfoOrErr)
10391 return ToTInfoOrErr.takeError();
10392
10393 SourceLocation EllipsisLoc;
10394 if (From->isPackExpansion())
10395 if (Error Err = importInto(To&: EllipsisLoc, From: From->getEllipsisLoc()))
10396 return std::move(Err);
10397
10398 return new (ToContext) CXXCtorInitializer(
10399 ToContext, *ToTInfoOrErr, From->isBaseVirtual(), *LParenLocOrErr,
10400 *ToExprOrErr, *RParenLocOrErr, EllipsisLoc);
10401 } else if (From->isMemberInitializer()) {
10402 ExpectedDecl ToFieldOrErr = Import(FromD: From->getMember());
10403 if (!ToFieldOrErr)
10404 return ToFieldOrErr.takeError();
10405
10406 auto MemberLocOrErr = Import(FromLoc: From->getMemberLocation());
10407 if (!MemberLocOrErr)
10408 return MemberLocOrErr.takeError();
10409
10410 return new (ToContext) CXXCtorInitializer(
10411 ToContext, cast_or_null<FieldDecl>(Val: *ToFieldOrErr), *MemberLocOrErr,
10412 *LParenLocOrErr, *ToExprOrErr, *RParenLocOrErr);
10413 } else if (From->isIndirectMemberInitializer()) {
10414 ExpectedDecl ToIFieldOrErr = Import(FromD: From->getIndirectMember());
10415 if (!ToIFieldOrErr)
10416 return ToIFieldOrErr.takeError();
10417
10418 auto MemberLocOrErr = Import(FromLoc: From->getMemberLocation());
10419 if (!MemberLocOrErr)
10420 return MemberLocOrErr.takeError();
10421
10422 return new (ToContext) CXXCtorInitializer(
10423 ToContext, cast_or_null<IndirectFieldDecl>(Val: *ToIFieldOrErr),
10424 *MemberLocOrErr, *LParenLocOrErr, *ToExprOrErr, *RParenLocOrErr);
10425 } else if (From->isDelegatingInitializer()) {
10426 auto ToTInfoOrErr = Import(FromTSI: From->getTypeSourceInfo());
10427 if (!ToTInfoOrErr)
10428 return ToTInfoOrErr.takeError();
10429
10430 return new (ToContext)
10431 CXXCtorInitializer(ToContext, *ToTInfoOrErr, *LParenLocOrErr,
10432 *ToExprOrErr, *RParenLocOrErr);
10433 } else {
10434 // FIXME: assert?
10435 return make_error<ASTImportError>();
10436 }
10437}
10438
10439Expected<CXXBaseSpecifier *>
10440ASTImporter::Import(const CXXBaseSpecifier *BaseSpec) {
10441 auto Pos = ImportedCXXBaseSpecifiers.find(Val: BaseSpec);
10442 if (Pos != ImportedCXXBaseSpecifiers.end())
10443 return Pos->second;
10444
10445 Expected<SourceRange> ToSourceRange = Import(FromRange: BaseSpec->getSourceRange());
10446 if (!ToSourceRange)
10447 return ToSourceRange.takeError();
10448 Expected<TypeSourceInfo *> ToTSI = Import(FromTSI: BaseSpec->getTypeSourceInfo());
10449 if (!ToTSI)
10450 return ToTSI.takeError();
10451 ExpectedSLoc ToEllipsisLoc = Import(FromLoc: BaseSpec->getEllipsisLoc());
10452 if (!ToEllipsisLoc)
10453 return ToEllipsisLoc.takeError();
10454 CXXBaseSpecifier *Imported = new (ToContext) CXXBaseSpecifier(
10455 *ToSourceRange, BaseSpec->isVirtual(), BaseSpec->isBaseOfClass(),
10456 BaseSpec->getAccessSpecifierAsWritten(), *ToTSI, *ToEllipsisLoc);
10457 ImportedCXXBaseSpecifiers[BaseSpec] = Imported;
10458 return Imported;
10459}
10460
10461llvm::Expected<APValue> ASTImporter::Import(const APValue &FromValue) {
10462 ASTNodeImporter Importer(*this);
10463 return Importer.ImportAPValue(FromValue);
10464}
10465
10466Error ASTImporter::ImportDefinition(Decl *From) {
10467 ExpectedDecl ToOrErr = Import(FromD: From);
10468 if (!ToOrErr)
10469 return ToOrErr.takeError();
10470 Decl *To = *ToOrErr;
10471
10472 auto *FromDC = cast<DeclContext>(Val: From);
10473 ASTNodeImporter Importer(*this);
10474
10475 if (auto *ToRecord = dyn_cast<RecordDecl>(Val: To)) {
10476 if (!ToRecord->getDefinition()) {
10477 return Importer.ImportDefinition(
10478 From: cast<RecordDecl>(Val: FromDC), To: ToRecord,
10479 Kind: ASTNodeImporter::IDK_Everything);
10480 }
10481 }
10482
10483 if (auto *ToEnum = dyn_cast<EnumDecl>(Val: To)) {
10484 if (!ToEnum->getDefinition()) {
10485 return Importer.ImportDefinition(
10486 From: cast<EnumDecl>(Val: FromDC), To: ToEnum, Kind: ASTNodeImporter::IDK_Everything);
10487 }
10488 }
10489
10490 if (auto *ToIFace = dyn_cast<ObjCInterfaceDecl>(Val: To)) {
10491 if (!ToIFace->getDefinition()) {
10492 return Importer.ImportDefinition(
10493 From: cast<ObjCInterfaceDecl>(Val: FromDC), To: ToIFace,
10494 Kind: ASTNodeImporter::IDK_Everything);
10495 }
10496 }
10497
10498 if (auto *ToProto = dyn_cast<ObjCProtocolDecl>(Val: To)) {
10499 if (!ToProto->getDefinition()) {
10500 return Importer.ImportDefinition(
10501 From: cast<ObjCProtocolDecl>(Val: FromDC), To: ToProto,
10502 Kind: ASTNodeImporter::IDK_Everything);
10503 }
10504 }
10505
10506 return Importer.ImportDeclContext(FromDC, ForceImport: true);
10507}
10508
10509Expected<DeclarationName> ASTImporter::Import(DeclarationName FromName) {
10510 if (!FromName)
10511 return DeclarationName{};
10512
10513 switch (FromName.getNameKind()) {
10514 case DeclarationName::Identifier:
10515 return DeclarationName(Import(FromId: FromName.getAsIdentifierInfo()));
10516
10517 case DeclarationName::ObjCZeroArgSelector:
10518 case DeclarationName::ObjCOneArgSelector:
10519 case DeclarationName::ObjCMultiArgSelector:
10520 if (auto ToSelOrErr = Import(FromSel: FromName.getObjCSelector()))
10521 return DeclarationName(*ToSelOrErr);
10522 else
10523 return ToSelOrErr.takeError();
10524
10525 case DeclarationName::CXXConstructorName: {
10526 if (auto ToTyOrErr = Import(FromT: FromName.getCXXNameType()))
10527 return ToContext.DeclarationNames.getCXXConstructorName(
10528 Ty: ToContext.getCanonicalType(T: *ToTyOrErr));
10529 else
10530 return ToTyOrErr.takeError();
10531 }
10532
10533 case DeclarationName::CXXDestructorName: {
10534 if (auto ToTyOrErr = Import(FromT: FromName.getCXXNameType()))
10535 return ToContext.DeclarationNames.getCXXDestructorName(
10536 Ty: ToContext.getCanonicalType(T: *ToTyOrErr));
10537 else
10538 return ToTyOrErr.takeError();
10539 }
10540
10541 case DeclarationName::CXXDeductionGuideName: {
10542 if (auto ToTemplateOrErr = Import(FromD: FromName.getCXXDeductionGuideTemplate()))
10543 return ToContext.DeclarationNames.getCXXDeductionGuideName(
10544 TD: cast<TemplateDecl>(Val: *ToTemplateOrErr));
10545 else
10546 return ToTemplateOrErr.takeError();
10547 }
10548
10549 case DeclarationName::CXXConversionFunctionName: {
10550 if (auto ToTyOrErr = Import(FromT: FromName.getCXXNameType()))
10551 return ToContext.DeclarationNames.getCXXConversionFunctionName(
10552 Ty: ToContext.getCanonicalType(T: *ToTyOrErr));
10553 else
10554 return ToTyOrErr.takeError();
10555 }
10556
10557 case DeclarationName::CXXOperatorName:
10558 return ToContext.DeclarationNames.getCXXOperatorName(
10559 Op: FromName.getCXXOverloadedOperator());
10560
10561 case DeclarationName::CXXLiteralOperatorName:
10562 return ToContext.DeclarationNames.getCXXLiteralOperatorName(
10563 II: Import(FromId: FromName.getCXXLiteralIdentifier()));
10564
10565 case DeclarationName::CXXUsingDirective:
10566 // FIXME: STATICS!
10567 return DeclarationName::getUsingDirectiveName();
10568 }
10569
10570 llvm_unreachable("Invalid DeclarationName Kind!");
10571}
10572
10573IdentifierInfo *ASTImporter::Import(const IdentifierInfo *FromId) {
10574 if (!FromId)
10575 return nullptr;
10576
10577 IdentifierInfo *ToId = &ToContext.Idents.get(Name: FromId->getName());
10578
10579 if (!ToId->getBuiltinID() && FromId->getBuiltinID())
10580 ToId->setBuiltinID(FromId->getBuiltinID());
10581
10582 return ToId;
10583}
10584
10585IdentifierOrOverloadedOperator
10586ASTImporter::Import(IdentifierOrOverloadedOperator FromIO) {
10587 if (const IdentifierInfo *FromII = FromIO.getIdentifier())
10588 return Import(FromId: FromII);
10589 return FromIO.getOperator();
10590}
10591
10592Expected<Selector> ASTImporter::Import(Selector FromSel) {
10593 if (FromSel.isNull())
10594 return Selector{};
10595
10596 SmallVector<const IdentifierInfo *, 4> Idents;
10597 Idents.push_back(Elt: Import(FromId: FromSel.getIdentifierInfoForSlot(argIndex: 0)));
10598 for (unsigned I = 1, N = FromSel.getNumArgs(); I < N; ++I)
10599 Idents.push_back(Elt: Import(FromId: FromSel.getIdentifierInfoForSlot(argIndex: I)));
10600 return ToContext.Selectors.getSelector(NumArgs: FromSel.getNumArgs(), IIV: Idents.data());
10601}
10602
10603llvm::Expected<APValue>
10604ASTNodeImporter::ImportAPValue(const APValue &FromValue) {
10605 APValue Result;
10606 llvm::Error Err = llvm::Error::success();
10607 auto ImportLoop = [&](const APValue *From, APValue *To, unsigned Size) {
10608 for (unsigned Idx = 0; Idx < Size; Idx++) {
10609 APValue Tmp = importChecked(Err, From: From[Idx]);
10610 To[Idx] = Tmp;
10611 }
10612 };
10613 switch (FromValue.getKind()) {
10614 case APValue::None:
10615 case APValue::Indeterminate:
10616 case APValue::Int:
10617 case APValue::Float:
10618 case APValue::FixedPoint:
10619 case APValue::ComplexInt:
10620 case APValue::ComplexFloat:
10621 Result = FromValue;
10622 break;
10623 case APValue::Vector: {
10624 Result.MakeVector();
10625 MutableArrayRef<APValue> Elts =
10626 Result.setVectorUninit(FromValue.getVectorLength());
10627 ImportLoop(((const APValue::Vec *)(const char *)&FromValue.Data)->Elts,
10628 Elts.data(), FromValue.getVectorLength());
10629 break;
10630 }
10631 case APValue::Array:
10632 Result.MakeArray(InitElts: FromValue.getArrayInitializedElts(),
10633 Size: FromValue.getArraySize());
10634 ImportLoop(((const APValue::Arr *)(const char *)&FromValue.Data)->Elts,
10635 ((const APValue::Arr *)(const char *)&Result.Data)->Elts,
10636 FromValue.getArrayInitializedElts());
10637 break;
10638 case APValue::Struct:
10639 Result.MakeStruct(B: FromValue.getStructNumBases(),
10640 M: FromValue.getStructNumFields());
10641 ImportLoop(
10642 ((const APValue::StructData *)(const char *)&FromValue.Data)->Elts,
10643 ((const APValue::StructData *)(const char *)&Result.Data)->Elts,
10644 FromValue.getStructNumBases() + FromValue.getStructNumFields());
10645 break;
10646 case APValue::Union: {
10647 Result.MakeUnion();
10648 const Decl *ImpFDecl = importChecked(Err, From: FromValue.getUnionField());
10649 APValue ImpValue = importChecked(Err, From: FromValue.getUnionValue());
10650 if (Err)
10651 return std::move(Err);
10652 Result.setUnion(Field: cast<FieldDecl>(Val: ImpFDecl), Value: ImpValue);
10653 break;
10654 }
10655 case APValue::AddrLabelDiff: {
10656 Result.MakeAddrLabelDiff();
10657 const Expr *ImpLHS = importChecked(Err, From: FromValue.getAddrLabelDiffLHS());
10658 const Expr *ImpRHS = importChecked(Err, From: FromValue.getAddrLabelDiffRHS());
10659 if (Err)
10660 return std::move(Err);
10661 Result.setAddrLabelDiff(LHSExpr: cast<AddrLabelExpr>(Val: ImpLHS),
10662 RHSExpr: cast<AddrLabelExpr>(Val: ImpRHS));
10663 break;
10664 }
10665 case APValue::MemberPointer: {
10666 const Decl *ImpMemPtrDecl =
10667 importChecked(Err, From: FromValue.getMemberPointerDecl());
10668 if (Err)
10669 return std::move(Err);
10670 MutableArrayRef<const CXXRecordDecl *> ToPath =
10671 Result.setMemberPointerUninit(
10672 Member: cast<const ValueDecl>(Val: ImpMemPtrDecl),
10673 IsDerivedMember: FromValue.isMemberPointerToDerivedMember(),
10674 Size: FromValue.getMemberPointerPath().size());
10675 ArrayRef<const CXXRecordDecl *> FromPath = Result.getMemberPointerPath();
10676 for (unsigned Idx = 0; Idx < FromValue.getMemberPointerPath().size();
10677 Idx++) {
10678 const Decl *ImpDecl = importChecked(Err, From: FromPath[Idx]);
10679 if (Err)
10680 return std::move(Err);
10681 ToPath[Idx] = cast<const CXXRecordDecl>(Val: ImpDecl->getCanonicalDecl());
10682 }
10683 break;
10684 }
10685 case APValue::LValue:
10686 APValue::LValueBase Base;
10687 QualType FromElemTy;
10688 if (FromValue.getLValueBase()) {
10689 assert(!FromValue.getLValueBase().is<DynamicAllocLValue>() &&
10690 "in C++20 dynamic allocation are transient so they shouldn't "
10691 "appear in the AST");
10692 if (!FromValue.getLValueBase().is<TypeInfoLValue>()) {
10693 if (const auto *E =
10694 FromValue.getLValueBase().dyn_cast<const Expr *>()) {
10695 FromElemTy = E->getType();
10696 const Expr *ImpExpr = importChecked(Err, From: E);
10697 if (Err)
10698 return std::move(Err);
10699 Base = APValue::LValueBase(ImpExpr,
10700 FromValue.getLValueBase().getCallIndex(),
10701 FromValue.getLValueBase().getVersion());
10702 } else {
10703 FromElemTy =
10704 FromValue.getLValueBase().get<const ValueDecl *>()->getType();
10705 const Decl *ImpDecl = importChecked(
10706 Err, From: FromValue.getLValueBase().get<const ValueDecl *>());
10707 if (Err)
10708 return std::move(Err);
10709 Base = APValue::LValueBase(cast<ValueDecl>(Val: ImpDecl),
10710 FromValue.getLValueBase().getCallIndex(),
10711 FromValue.getLValueBase().getVersion());
10712 }
10713 } else {
10714 FromElemTy = FromValue.getLValueBase().getTypeInfoType();
10715 const Type *ImpTypeInfo = importChecked(
10716 Err, From: FromValue.getLValueBase().get<TypeInfoLValue>().getType());
10717 QualType ImpType =
10718 importChecked(Err, From: FromValue.getLValueBase().getTypeInfoType());
10719 if (Err)
10720 return std::move(Err);
10721 Base = APValue::LValueBase::getTypeInfo(LV: TypeInfoLValue(ImpTypeInfo),
10722 TypeInfo: ImpType);
10723 }
10724 }
10725 CharUnits Offset = FromValue.getLValueOffset();
10726 unsigned PathLength = FromValue.getLValuePath().size();
10727 Result.MakeLValue();
10728 if (FromValue.hasLValuePath()) {
10729 MutableArrayRef<APValue::LValuePathEntry> ToPath = Result.setLValueUninit(
10730 B: Base, O: Offset, Size: PathLength, OnePastTheEnd: FromValue.isLValueOnePastTheEnd(),
10731 IsNullPtr: FromValue.isNullPointer());
10732 ArrayRef<APValue::LValuePathEntry> FromPath = FromValue.getLValuePath();
10733 for (unsigned LoopIdx = 0; LoopIdx < PathLength; LoopIdx++) {
10734 if (FromElemTy->isRecordType()) {
10735 const Decl *FromDecl =
10736 FromPath[LoopIdx].getAsBaseOrMember().getPointer();
10737 const Decl *ImpDecl = importChecked(Err, From: FromDecl);
10738 if (Err)
10739 return std::move(Err);
10740 if (auto *RD = dyn_cast<CXXRecordDecl>(Val: FromDecl))
10741 FromElemTy = Importer.FromContext.getCanonicalTagType(TD: RD);
10742 else
10743 FromElemTy = cast<ValueDecl>(Val: FromDecl)->getType();
10744 ToPath[LoopIdx] = APValue::LValuePathEntry(APValue::BaseOrMemberType(
10745 ImpDecl, FromPath[LoopIdx].getAsBaseOrMember().getInt()));
10746 } else {
10747 FromElemTy =
10748 Importer.FromContext.getAsArrayType(T: FromElemTy)->getElementType();
10749 ToPath[LoopIdx] = APValue::LValuePathEntry::ArrayIndex(
10750 Index: FromPath[LoopIdx].getAsArrayIndex());
10751 }
10752 }
10753 } else
10754 Result.setLValue(B: Base, O: Offset, APValue::NoLValuePath{},
10755 IsNullPtr: FromValue.isNullPointer());
10756 }
10757 if (Err)
10758 return std::move(Err);
10759 return Result;
10760}
10761
10762Expected<DeclarationName> ASTImporter::HandleNameConflict(DeclarationName Name,
10763 DeclContext *DC,
10764 unsigned IDNS,
10765 NamedDecl **Decls,
10766 unsigned NumDecls) {
10767 if (ODRHandling == ODRHandlingType::Conservative)
10768 // Report error at any name conflict.
10769 return make_error<ASTImportError>(Args: ASTImportError::NameConflict);
10770 else
10771 // Allow to create the new Decl with the same name.
10772 return Name;
10773}
10774
10775DiagnosticBuilder ASTImporter::ToDiag(SourceLocation Loc, unsigned DiagID) {
10776 if (LastDiagFromFrom)
10777 ToContext.getDiagnostics().notePriorDiagnosticFrom(
10778 Other: FromContext.getDiagnostics());
10779 LastDiagFromFrom = false;
10780 return ToContext.getDiagnostics().Report(Loc, DiagID);
10781}
10782
10783DiagnosticBuilder ASTImporter::FromDiag(SourceLocation Loc, unsigned DiagID) {
10784 if (!LastDiagFromFrom)
10785 FromContext.getDiagnostics().notePriorDiagnosticFrom(
10786 Other: ToContext.getDiagnostics());
10787 LastDiagFromFrom = true;
10788 return FromContext.getDiagnostics().Report(Loc, DiagID);
10789}
10790
10791void ASTImporter::CompleteDecl (Decl *D) {
10792 if (auto *ID = dyn_cast<ObjCInterfaceDecl>(Val: D)) {
10793 if (!ID->getDefinition())
10794 ID->startDefinition();
10795 }
10796 else if (auto *PD = dyn_cast<ObjCProtocolDecl>(Val: D)) {
10797 if (!PD->getDefinition())
10798 PD->startDefinition();
10799 }
10800 else if (auto *TD = dyn_cast<TagDecl>(Val: D)) {
10801 if (!TD->getDefinition() && !TD->isBeingDefined()) {
10802 TD->startDefinition();
10803 TD->setCompleteDefinition(true);
10804 }
10805 }
10806 else {
10807 assert(0 && "CompleteDecl called on a Decl that can't be completed");
10808 }
10809}
10810
10811Decl *ASTImporter::MapImported(Decl *From, Decl *To) {
10812 auto [Pos, Inserted] = ImportedDecls.try_emplace(Key: From, Args&: To);
10813 assert((Inserted || Pos->second == To) &&
10814 "Try to import an already imported Decl");
10815 if (!Inserted)
10816 return Pos->second;
10817 // This mapping should be maintained only in this function. Therefore do not
10818 // check for additional consistency.
10819 ImportedFromDecls[To] = From;
10820 // In the case of TypedefNameDecl we create the Decl first and only then we
10821 // import and set its DeclContext. So, the DC is still not set when we reach
10822 // here from GetImportedOrCreateDecl.
10823 if (To->getDeclContext())
10824 AddToLookupTable(ToD: To);
10825 return To;
10826}
10827
10828std::optional<ASTImportError>
10829ASTImporter::getImportDeclErrorIfAny(Decl *FromD) const {
10830 auto Pos = ImportDeclErrors.find(Val: FromD);
10831 if (Pos != ImportDeclErrors.end())
10832 return Pos->second;
10833 else
10834 return std::nullopt;
10835}
10836
10837void ASTImporter::setImportDeclError(Decl *From, ASTImportError Error) {
10838 auto InsertRes = ImportDeclErrors.insert(KV: {From, Error});
10839 (void)InsertRes;
10840 // Either we set the error for the first time, or we already had set one and
10841 // now we want to set the same error.
10842 assert(InsertRes.second || InsertRes.first->second.Error == Error.Error);
10843}
10844
10845bool ASTImporter::IsStructurallyEquivalent(QualType From, QualType To,
10846 bool Complain) {
10847 llvm::DenseMap<const Type *, const Type *>::iterator Pos =
10848 ImportedTypes.find(Val: From.getTypePtr());
10849 if (Pos != ImportedTypes.end()) {
10850 if (ExpectedType ToFromOrErr = Import(FromT: From)) {
10851 if (ToContext.hasSameType(T1: *ToFromOrErr, T2: To))
10852 return true;
10853 } else {
10854 llvm::consumeError(Err: ToFromOrErr.takeError());
10855 }
10856 }
10857
10858 StructuralEquivalenceContext Ctx(
10859 getToContext().getLangOpts(), FromContext, ToContext, NonEquivalentDecls,
10860 getStructuralEquivalenceKind(Importer: *this), false, Complain);
10861 return Ctx.IsEquivalent(T1: From, T2: To);
10862}
10863