summaryrefslogtreecommitdiffstats
path: root/lib/AST/ASTImporter.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/AST/ASTImporter.cpp')
-rw-r--r--lib/AST/ASTImporter.cpp291
1 files changed, 268 insertions, 23 deletions
diff --git a/lib/AST/ASTImporter.cpp b/lib/AST/ASTImporter.cpp
index 915eb6f..e16015b 100644
--- a/lib/AST/ASTImporter.cpp
+++ b/lib/AST/ASTImporter.cpp
@@ -106,6 +106,8 @@ namespace clang {
bool ImportDefinition(RecordDecl *From, RecordDecl *To,
ImportDefinitionKind Kind = IDK_Default);
+ bool ImportDefinition(VarDecl *From, VarDecl *To,
+ ImportDefinitionKind Kind = IDK_Default);
bool ImportDefinition(EnumDecl *From, EnumDecl *To,
ImportDefinitionKind Kind = IDK_Default);
bool ImportDefinition(ObjCInterfaceDecl *From, ObjCInterfaceDecl *To,
@@ -120,9 +122,12 @@ namespace clang {
SmallVectorImpl<TemplateArgument> &ToArgs);
bool IsStructuralMatch(RecordDecl *FromRecord, RecordDecl *ToRecord,
bool Complain = true);
+ bool IsStructuralMatch(VarDecl *FromVar, VarDecl *ToVar,
+ bool Complain = true);
bool IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToRecord);
bool IsStructuralMatch(EnumConstantDecl *FromEC, EnumConstantDecl *ToEC);
bool IsStructuralMatch(ClassTemplateDecl *From, ClassTemplateDecl *To);
+ bool IsStructuralMatch(VarTemplateDecl *From, VarTemplateDecl *To);
Decl *VisitDecl(Decl *D);
Decl *VisitTranslationUnitDecl(TranslationUnitDecl *D);
Decl *VisitNamespaceDecl(NamespaceDecl *D);
@@ -157,7 +162,9 @@ namespace clang {
Decl *VisitClassTemplateDecl(ClassTemplateDecl *D);
Decl *VisitClassTemplateSpecializationDecl(
ClassTemplateSpecializationDecl *D);
-
+ Decl *VisitVarTemplateDecl(VarTemplateDecl *D);
+ Decl *VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
+
// Importing statements
Stmt *VisitStmt(Stmt *S);
@@ -400,6 +407,13 @@ static bool IsStructurallyEquivalent(StructuralEquivalenceContext &Context,
return false;
break;
+ case Type::Decayed:
+ if (!IsStructurallyEquivalent(Context,
+ cast<DecayedType>(T1)->getPointeeType(),
+ cast<DecayedType>(T2)->getPointeeType()))
+ return false;
+ break;
+
case Type::Pointer:
if (!IsStructurallyEquivalent(Context,
cast<PointerType>(T1)->getPointeeType(),
@@ -1695,7 +1709,8 @@ QualType ASTNodeImporter::VisitAutoType(const AutoType *T) {
return QualType();
}
- return Importer.getToContext().getAutoType(ToDeduced, T->isDecltypeAuto());
+ return Importer.getToContext().getAutoType(ToDeduced, T->isDecltypeAuto(),
+ /*IsDependent*/false);
}
QualType ASTNodeImporter::VisitRecordType(const RecordType *T) {
@@ -1968,9 +1983,6 @@ bool ASTNodeImporter::ImportDefinition(RecordDecl *From, RecordDecl *To,
= FromData.HasDeclaredCopyConstructorWithConstParam;
ToData.HasDeclaredCopyAssignmentWithConstParam
= FromData.HasDeclaredCopyAssignmentWithConstParam;
- ToData.FailedImplicitMoveConstructor
- = FromData.FailedImplicitMoveConstructor;
- ToData.FailedImplicitMoveAssignment = FromData.FailedImplicitMoveAssignment;
ToData.IsLambda = FromData.IsLambda;
SmallVector<CXXBaseSpecifier *, 4> Bases;
@@ -2010,6 +2022,21 @@ bool ASTNodeImporter::ImportDefinition(RecordDecl *From, RecordDecl *To,
return false;
}
+bool ASTNodeImporter::ImportDefinition(VarDecl *From, VarDecl *To,
+ ImportDefinitionKind Kind) {
+ if (To->getDefinition())
+ return false;
+
+ // FIXME: Can we really import any initializer? Alternatively, we could force
+ // ourselves to import every declaration of a variable and then only use
+ // getInit() here.
+ To->setInit(Importer.Import(const_cast<Expr *>(From->getAnyInitializer())));
+
+ // FIXME: Other bits to merge?
+
+ return false;
+}
+
bool ASTNodeImporter::ImportDefinition(EnumDecl *From, EnumDecl *To,
ImportDefinitionKind Kind) {
if (To->getDefinition() || To->isBeingDefined()) {
@@ -2148,13 +2175,30 @@ bool ASTNodeImporter::ImportTemplateArguments(const TemplateArgument *FromArgs,
bool ASTNodeImporter::IsStructuralMatch(RecordDecl *FromRecord,
RecordDecl *ToRecord, bool Complain) {
+ // Eliminate a potential failure point where we attempt to re-import
+ // something we're trying to import while completing ToRecord.
+ Decl *ToOrigin = Importer.GetOriginalDecl(ToRecord);
+ if (ToOrigin) {
+ RecordDecl *ToOriginRecord = dyn_cast<RecordDecl>(ToOrigin);
+ if (ToOriginRecord)
+ ToRecord = ToOriginRecord;
+ }
+
StructuralEquivalenceContext Ctx(Importer.getFromContext(),
- Importer.getToContext(),
+ ToRecord->getASTContext(),
Importer.getNonEquivalentDecls(),
false, Complain);
return Ctx.IsStructurallyEquivalent(FromRecord, ToRecord);
}
+bool ASTNodeImporter::IsStructuralMatch(VarDecl *FromVar, VarDecl *ToVar,
+ bool Complain) {
+ StructuralEquivalenceContext Ctx(
+ Importer.getFromContext(), Importer.getToContext(),
+ Importer.getNonEquivalentDecls(), false, Complain);
+ return Ctx.IsStructurallyEquivalent(FromVar, ToVar);
+}
+
bool ASTNodeImporter::IsStructuralMatch(EnumDecl *FromEnum, EnumDecl *ToEnum) {
StructuralEquivalenceContext Ctx(Importer.getFromContext(),
Importer.getToContext(),
@@ -2181,6 +2225,14 @@ bool ASTNodeImporter::IsStructuralMatch(ClassTemplateDecl *From,
return Ctx.IsStructurallyEquivalent(From, To);
}
+bool ASTNodeImporter::IsStructuralMatch(VarTemplateDecl *From,
+ VarTemplateDecl *To) {
+ StructuralEquivalenceContext Ctx(Importer.getFromContext(),
+ Importer.getToContext(),
+ Importer.getNonEquivalentDecls());
+ return Ctx.IsStructurallyEquivalent(From, To);
+}
+
Decl *ASTNodeImporter::VisitDecl(Decl *D) {
Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node)
<< D->getDeclKindName();
@@ -2610,8 +2662,8 @@ Decl *ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) {
continue;
if (FunctionDecl *FoundFunction = dyn_cast<FunctionDecl>(FoundDecls[I])) {
- if (isExternalLinkage(FoundFunction->getLinkage()) &&
- isExternalLinkage(D->getLinkage())) {
+ if (FoundFunction->hasExternalFormalLinkage() &&
+ D->hasExternalFormalLinkage()) {
if (Importer.IsStructurallyEquivalent(D->getType(),
FoundFunction->getType())) {
// FIXME: Actually try to merge the body and other attributes.
@@ -2664,10 +2716,7 @@ Decl *ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) {
FromEPI.NoexceptExpr) {
FunctionProtoType::ExtProtoInfo DefaultEPI;
FromTy = Importer.getFromContext().getFunctionType(
- FromFPT->getResultType(),
- ArrayRef<QualType>(FromFPT->arg_type_begin(),
- FromFPT->getNumArgs()),
- DefaultEPI);
+ FromFPT->getResultType(), FromFPT->getArgTypes(), DefaultEPI);
usedDifferentExceptionSpec = true;
}
}
@@ -2878,7 +2927,7 @@ Decl *ASTNodeImporter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
if (Importer.IsStructurallyEquivalent(D->getType(),
FoundField->getType(),
- Name)) {
+ !Name.isEmpty())) {
Importer.Imported(D, FoundField);
return FoundField;
}
@@ -2965,7 +3014,8 @@ Decl *ASTNodeImporter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
Importer.Import(D->getInnerLocStart()),
Loc, Name.getAsIdentifierInfo(),
T, TInfo, D->getAccessControl(),
- BitWidth, D->getSynthesize());
+ BitWidth, D->getSynthesize(),
+ D->getBackingIvarReferencedInAccessor());
ToIvar->setLexicalDeclContext(LexicalDC);
Importer.Imported(D, ToIvar);
LexicalDC->addDeclInternal(ToIvar);
@@ -2995,8 +3045,8 @@ Decl *ASTNodeImporter::VisitVarDecl(VarDecl *D) {
if (VarDecl *FoundVar = dyn_cast<VarDecl>(FoundDecls[I])) {
// We have found a variable that we may need to merge with. Check it.
- if (isExternalLinkage(FoundVar->getLinkage()) &&
- isExternalLinkage(D->getLinkage())) {
+ if (FoundVar->hasExternalFormalLinkage() &&
+ D->hasExternalFormalLinkage()) {
if (Importer.IsStructurallyEquivalent(D->getType(),
FoundVar->getType())) {
MergeWithVar = FoundVar;
@@ -3088,13 +3138,9 @@ Decl *ASTNodeImporter::VisitVarDecl(VarDecl *D) {
LexicalDC->addDeclInternal(ToVar);
// Merge the initializer.
- // FIXME: Can we really import any initializer? Alternatively, we could force
- // ourselves to import every declaration of a variable and then only use
- // getInit() here.
- ToVar->setInit(Importer.Import(const_cast<Expr *>(D->getAnyInitializer())));
+ if (ImportDefinition(D, ToVar))
+ return 0;
- // FIXME: Other bits to merge?
-
return ToVar;
}
@@ -4108,6 +4154,205 @@ Decl *ASTNodeImporter::VisitClassTemplateSpecializationDecl(
return D2;
}
+Decl *ASTNodeImporter::VisitVarTemplateDecl(VarTemplateDecl *D) {
+ // If this variable has a definition in the translation unit we're coming
+ // from,
+ // but this particular declaration is not that definition, import the
+ // definition and map to that.
+ VarDecl *Definition =
+ cast_or_null<VarDecl>(D->getTemplatedDecl()->getDefinition());
+ if (Definition && Definition != D->getTemplatedDecl()) {
+ Decl *ImportedDef = Importer.Import(Definition->getDescribedVarTemplate());
+ if (!ImportedDef)
+ return 0;
+
+ return Importer.Imported(D, ImportedDef);
+ }
+
+ // Import the major distinguishing characteristics of this variable template.
+ DeclContext *DC, *LexicalDC;
+ DeclarationName Name;
+ SourceLocation Loc;
+ if (ImportDeclParts(D, DC, LexicalDC, Name, Loc))
+ return 0;
+
+ // We may already have a template of the same name; try to find and match it.
+ assert(!DC->isFunctionOrMethod() &&
+ "Variable templates cannot be declared at function scope");
+ SmallVector<NamedDecl *, 4> ConflictingDecls;
+ SmallVector<NamedDecl *, 2> FoundDecls;
+ DC->localUncachedLookup(Name, FoundDecls);
+ for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
+ if (!FoundDecls[I]->isInIdentifierNamespace(Decl::IDNS_Ordinary))
+ continue;
+
+ Decl *Found = FoundDecls[I];
+ if (VarTemplateDecl *FoundTemplate = dyn_cast<VarTemplateDecl>(Found)) {
+ if (IsStructuralMatch(D, FoundTemplate)) {
+ // The variable templates structurally match; call it the same template.
+ Importer.Imported(D->getTemplatedDecl(),
+ FoundTemplate->getTemplatedDecl());
+ return Importer.Imported(D, FoundTemplate);
+ }
+ }
+
+ ConflictingDecls.push_back(FoundDecls[I]);
+ }
+
+ if (!ConflictingDecls.empty()) {
+ Name = Importer.HandleNameConflict(Name, DC, Decl::IDNS_Ordinary,
+ ConflictingDecls.data(),
+ ConflictingDecls.size());
+ }
+
+ if (!Name)
+ return 0;
+
+ VarDecl *DTemplated = D->getTemplatedDecl();
+
+ // Import the type.
+ QualType T = Importer.Import(DTemplated->getType());
+ if (T.isNull())
+ return 0;
+
+ // Create the declaration that is being templated.
+ SourceLocation StartLoc = Importer.Import(DTemplated->getLocStart());
+ SourceLocation IdLoc = Importer.Import(DTemplated->getLocation());
+ TypeSourceInfo *TInfo = Importer.Import(DTemplated->getTypeSourceInfo());
+ VarDecl *D2Templated = VarDecl::Create(Importer.getToContext(), DC, StartLoc,
+ IdLoc, Name.getAsIdentifierInfo(), T,
+ TInfo, DTemplated->getStorageClass());
+ D2Templated->setAccess(DTemplated->getAccess());
+ D2Templated->setQualifierInfo(Importer.Import(DTemplated->getQualifierLoc()));
+ D2Templated->setLexicalDeclContext(LexicalDC);
+
+ // Importer.Imported(DTemplated, D2Templated);
+ // LexicalDC->addDeclInternal(D2Templated);
+
+ // Merge the initializer.
+ if (ImportDefinition(DTemplated, D2Templated))
+ return 0;
+
+ // Create the variable template declaration itself.
+ TemplateParameterList *TemplateParams =
+ ImportTemplateParameterList(D->getTemplateParameters());
+ if (!TemplateParams)
+ return 0;
+
+ VarTemplateDecl *D2 = VarTemplateDecl::Create(
+ Importer.getToContext(), DC, Loc, Name, TemplateParams, D2Templated,
+ /*PrevDecl=*/0);
+ D2Templated->setDescribedVarTemplate(D2);
+
+ D2->setAccess(D->getAccess());
+ D2->setLexicalDeclContext(LexicalDC);
+ LexicalDC->addDeclInternal(D2);
+
+ // Note the relationship between the variable templates.
+ Importer.Imported(D, D2);
+ Importer.Imported(DTemplated, D2Templated);
+
+ if (DTemplated->isThisDeclarationADefinition() &&
+ !D2Templated->isThisDeclarationADefinition()) {
+ // FIXME: Import definition!
+ }
+
+ return D2;
+}
+
+Decl *ASTNodeImporter::VisitVarTemplateSpecializationDecl(
+ VarTemplateSpecializationDecl *D) {
+ // If this record has a definition in the translation unit we're coming from,
+ // but this particular declaration is not that definition, import the
+ // definition and map to that.
+ VarDecl *Definition = D->getDefinition();
+ if (Definition && Definition != D) {
+ Decl *ImportedDef = Importer.Import(Definition);
+ if (!ImportedDef)
+ return 0;
+
+ return Importer.Imported(D, ImportedDef);
+ }
+
+ VarTemplateDecl *VarTemplate = cast_or_null<VarTemplateDecl>(
+ Importer.Import(D->getSpecializedTemplate()));
+ if (!VarTemplate)
+ return 0;
+
+ // Import the context of this declaration.
+ DeclContext *DC = VarTemplate->getDeclContext();
+ if (!DC)
+ return 0;
+
+ DeclContext *LexicalDC = DC;
+ if (D->getDeclContext() != D->getLexicalDeclContext()) {
+ LexicalDC = Importer.ImportContext(D->getLexicalDeclContext());
+ if (!LexicalDC)
+ return 0;
+ }
+
+ // Import the location of this declaration.
+ SourceLocation StartLoc = Importer.Import(D->getLocStart());
+ SourceLocation IdLoc = Importer.Import(D->getLocation());
+
+ // Import template arguments.
+ SmallVector<TemplateArgument, 2> TemplateArgs;
+ if (ImportTemplateArguments(D->getTemplateArgs().data(),
+ D->getTemplateArgs().size(), TemplateArgs))
+ return 0;
+
+ // Try to find an existing specialization with these template arguments.
+ void *InsertPos = 0;
+ VarTemplateSpecializationDecl *D2 = VarTemplate->findSpecialization(
+ TemplateArgs.data(), TemplateArgs.size(), InsertPos);
+ if (D2) {
+ // We already have a variable template specialization with these template
+ // arguments.
+
+ // FIXME: Check for specialization vs. instantiation errors.
+
+ if (VarDecl *FoundDef = D2->getDefinition()) {
+ if (!D->isThisDeclarationADefinition() ||
+ IsStructuralMatch(D, FoundDef)) {
+ // The record types structurally match, or the "from" translation
+ // unit only had a forward declaration anyway; call it the same
+ // variable.
+ return Importer.Imported(D, FoundDef);
+ }
+ }
+ } else {
+
+ // Import the type.
+ QualType T = Importer.Import(D->getType());
+ if (T.isNull())
+ return 0;
+ TypeSourceInfo *TInfo = Importer.Import(D->getTypeSourceInfo());
+
+ // Create a new specialization.
+ D2 = VarTemplateSpecializationDecl::Create(
+ Importer.getToContext(), DC, StartLoc, IdLoc, VarTemplate, T, TInfo,
+ D->getStorageClass(), TemplateArgs.data(), TemplateArgs.size());
+ D2->setSpecializationKind(D->getSpecializationKind());
+ D2->setTemplateArgsInfo(D->getTemplateArgsInfo());
+
+ // Add this specialization to the class template.
+ VarTemplate->AddSpecialization(D2, InsertPos);
+
+ // Import the qualifier, if any.
+ D2->setQualifierInfo(Importer.Import(D->getQualifierLoc()));
+
+ // Add the specialization to this context.
+ D2->setLexicalDeclContext(LexicalDC);
+ LexicalDC->addDeclInternal(D2);
+ }
+ Importer.Imported(D, D2);
+
+ if (D->isThisDeclarationADefinition() && ImportDefinition(D, D2))
+ return 0;
+
+ return D2;
+}
+
//----------------------------------------------------------------------------
// Import Statements
//----------------------------------------------------------------------------
@@ -4406,7 +4651,7 @@ Decl *ASTImporter::Import(Decl *FromD) {
} else if (TypedefNameDecl *FromTypedef = dyn_cast<TypedefNameDecl>(FromD)) {
// When we've finished transforming a typedef, see whether it was the
// typedef for an anonymous tag.
- for (SmallVector<TagDecl *, 4>::iterator
+ for (SmallVectorImpl<TagDecl *>::iterator
FromTag = AnonTagsWithPendingTypedefs.begin(),
FromTagEnd = AnonTagsWithPendingTypedefs.end();
FromTag != FromTagEnd; ++FromTag) {
OpenPOWER on IntegriCloud