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llvm / llvm-project / clang / refs/heads/main / . / lib / AST / ASTImporter.cpp
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//===- ASTImporter.cpp - Importing ASTs from other Contexts ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the ASTImporter class which imports AST nodes from one
// context into another context.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/ASTImporter.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTDiagnostic.h"
#include "clang/AST/ASTImporterSharedState.h"
#include "clang/AST/ASTStructuralEquivalence.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclAccessPair.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclFriend.h"
#include "clang/AST/DeclGroup.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/DeclVisitor.h"
#include "clang/AST/DeclarationName.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/ExprObjC.h"
#include "clang/AST/ExternalASTSource.h"
#include "clang/AST/LambdaCapture.h"
#include "clang/AST/NestedNameSpecifier.h"
#include "clang/AST/OperationKinds.h"
#include "clang/AST/Stmt.h"
#include "clang/AST/StmtCXX.h"
#include "clang/AST/StmtObjC.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/AST/TemplateBase.h"
#include "clang/AST/TemplateName.h"
#include "clang/AST/Type.h"
#include "clang/AST/TypeLoc.h"
#include "clang/AST/TypeVisitor.h"
#include "clang/AST/UnresolvedSet.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/ExceptionSpecificationType.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/Specifiers.h"
#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/ScopeExit.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryBuffer.h"
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <memory>
#include <optional>
#include <type_traits>
#include <utility>
namespace clang {
using llvm::make_error;
using llvm::Error;
using llvm::Expected;
using ExpectedTypePtr = llvm::Expected<const Type *>;
using ExpectedType = llvm::Expected<QualType>;
using ExpectedStmt = llvm::Expected<Stmt *>;
using ExpectedExpr = llvm::Expected<Expr *>;
using ExpectedDecl = llvm::Expected<Decl *>;
using ExpectedSLoc = llvm::Expected<SourceLocation>;
using ExpectedName = llvm::Expected<DeclarationName>;
std::string ASTImportError::toString() const {
// FIXME: Improve error texts.
switch (Error) {
case NameConflict:
return "NameConflict";
case UnsupportedConstruct:
return "UnsupportedConstruct";
case Unknown:
return "Unknown error";
}
llvm_unreachable("Invalid error code.");
return "Invalid error code.";
}
void ASTImportError::log(raw_ostream &OS) const { OS << toString(); }
std::error_code ASTImportError::convertToErrorCode() const {
llvm_unreachable("Function not implemented.");
}
char ASTImportError::ID;
template <class T>
SmallVector<Decl *, 2>
getCanonicalForwardRedeclChain(Redeclarable<T>* D) {
SmallVector<Decl *, 2> Redecls;
for (auto *R : D->getFirstDecl()->redecls()) {
if (R != D->getFirstDecl())
Redecls.push_back(R);
}
Redecls.push_back(D->getFirstDecl());
std::reverse(Redecls.begin(), Redecls.end());
return Redecls;
}
SmallVector<Decl*, 2> getCanonicalForwardRedeclChain(Decl* D) {
if (auto *FD = dyn_cast<FunctionDecl>(D))
return getCanonicalForwardRedeclChain<FunctionDecl>(FD);
if (auto *VD = dyn_cast<VarDecl>(D))
return getCanonicalForwardRedeclChain<VarDecl>(VD);
if (auto *TD = dyn_cast<TagDecl>(D))
return getCanonicalForwardRedeclChain<TagDecl>(TD);
llvm_unreachable("Bad declaration kind");
}
void updateFlags(const Decl *From, Decl *To) {
// Check if some flags or attrs are new in 'From' and copy into 'To'.
// FIXME: Other flags or attrs?
if (From->isUsed(false) && !To->isUsed(false))
To->setIsUsed();
}
/// How to handle import errors that occur when import of a child declaration
/// of a DeclContext fails.
class ChildErrorHandlingStrategy {
/// This context is imported (in the 'from' domain).
/// It is nullptr if a non-DeclContext is imported.
const DeclContext *const FromDC;
/// Ignore import errors of the children.
/// If true, the context can be imported successfully if a child
/// of it failed to import. Otherwise the import errors of the child nodes
/// are accumulated (joined) into the import error object of the parent.
/// (Import of a parent can fail in other ways.)
bool const IgnoreChildErrors;
public:
ChildErrorHandlingStrategy(const DeclContext *FromDC)
: FromDC(FromDC), IgnoreChildErrors(!isa<TagDecl>(FromDC)) {}
ChildErrorHandlingStrategy(const Decl *FromD)
: FromDC(dyn_cast<DeclContext>(FromD)),
IgnoreChildErrors(!isa<TagDecl>(FromD)) {}
/// Process the import result of a child (of the current declaration).
/// \param ResultErr The import error that can be used as result of
/// importing the parent. This may be changed by the function.
/// \param ChildErr Result of importing a child. Can be success or error.
void handleChildImportResult(Error &ResultErr, Error &&ChildErr) {
if (ChildErr && !IgnoreChildErrors)
ResultErr = joinErrors(std::move(ResultErr), std::move(ChildErr));
else
consumeError(std::move(ChildErr));
}
/// Determine if import failure of a child does not cause import failure of
/// its parent.
bool ignoreChildErrorOnParent(Decl *FromChildD) const {
if (!IgnoreChildErrors || !FromDC)
return false;
return FromDC->containsDecl(FromChildD);
}
};
class ASTNodeImporter : public TypeVisitor<ASTNodeImporter, ExpectedType>,
public DeclVisitor<ASTNodeImporter, ExpectedDecl>,
public StmtVisitor<ASTNodeImporter, ExpectedStmt> {
ASTImporter &Importer;
// Use this instead of Importer.importInto .
template <typename ImportT>
[[nodiscard]] Error importInto(ImportT &To, const ImportT &From) {
return Importer.importInto(To, From);
}
// Use this to import pointers of specific type.
template <typename ImportT>
[[nodiscard]] Error importInto(ImportT *&To, ImportT *From) {
auto ToOrErr = Importer.Import(From);
if (ToOrErr)
To = cast_or_null<ImportT>(*ToOrErr);
return ToOrErr.takeError();
}
// Call the import function of ASTImporter for a baseclass of type `T` and
// cast the return value to `T`.
template <typename T>
auto import(T *From)
-> std::conditional_t<std::is_base_of_v<Type, T>, Expected<const T *>,
Expected<T *>> {
auto ToOrErr = Importer.Import(From);
if (!ToOrErr)
return ToOrErr.takeError();
return cast_or_null<T>(*ToOrErr);
}
template <typename T>
auto import(const T *From) {
return import(const_cast<T *>(From));
}
// Call the import function of ASTImporter for type `T`.
template <typename T>
Expected<T> import(const T &From) {
return Importer.Import(From);
}
// Import an std::optional<T> by importing the contained T, if any.
template <typename T>
Expected<std::optional<T>> import(std::optional<T> From) {
if (!From)
return std::nullopt;
return import(*From);
}
ExplicitSpecifier importExplicitSpecifier(Error &Err,
ExplicitSpecifier ESpec);
// Wrapper for an overload set.
template <typename ToDeclT> struct CallOverloadedCreateFun {
template <typename... Args> decltype(auto) operator()(Args &&... args) {
return ToDeclT::Create(std::forward<Args>(args)...);
}
};
// Always use these functions to create a Decl during import. There are
// certain tasks which must be done after the Decl was created, e.g. we
// must immediately register that as an imported Decl. The parameter `ToD`
// will be set to the newly created Decl or if had been imported before
// then to the already imported Decl. Returns a bool value set to true if
// the `FromD` had been imported before.
template <typename ToDeclT, typename FromDeclT, typename... Args>
[[nodiscard]] bool GetImportedOrCreateDecl(ToDeclT *&ToD, FromDeclT *FromD,
Args &&...args) {
// There may be several overloads of ToDeclT::Create. We must make sure
// to call the one which would be chosen by the arguments, thus we use a
// wrapper for the overload set.
CallOverloadedCreateFun<ToDeclT> OC;
return GetImportedOrCreateSpecialDecl(ToD, OC, FromD,
std::forward<Args>(args)...);
}
// Use this overload if a special Type is needed to be created. E.g if we
// want to create a `TypeAliasDecl` and assign that to a `TypedefNameDecl`
// then:
// TypedefNameDecl *ToTypedef;
// GetImportedOrCreateDecl<TypeAliasDecl>(ToTypedef, FromD, ...);
template <typename NewDeclT, typename ToDeclT, typename FromDeclT,
typename... Args>
[[nodiscard]] bool GetImportedOrCreateDecl(ToDeclT *&ToD, FromDeclT *FromD,
Args &&...args) {
CallOverloadedCreateFun<NewDeclT> OC;
return GetImportedOrCreateSpecialDecl(ToD, OC, FromD,
std::forward<Args>(args)...);
}
// Use this version if a special create function must be
// used, e.g. CXXRecordDecl::CreateLambda .
template <typename ToDeclT, typename CreateFunT, typename FromDeclT,
typename... Args>
[[nodiscard]] bool
GetImportedOrCreateSpecialDecl(ToDeclT *&ToD, CreateFunT CreateFun,
FromDeclT *FromD, Args &&...args) {
if (Importer.getImportDeclErrorIfAny(FromD)) {
ToD = nullptr;
return true; // Already imported but with error.
}
ToD = cast_or_null<ToDeclT>(Importer.GetAlreadyImportedOrNull(FromD));
if (ToD)
return true; // Already imported.
ToD = CreateFun(std::forward<Args>(args)...);
// Keep track of imported Decls.
Importer.RegisterImportedDecl(FromD, ToD);
Importer.SharedState->markAsNewDecl(ToD);
InitializeImportedDecl(FromD, ToD);
return false; // A new Decl is created.
}
void InitializeImportedDecl(Decl *FromD, Decl *ToD) {
ToD->IdentifierNamespace = FromD->IdentifierNamespace;
if (FromD->isUsed())
ToD->setIsUsed();
if (FromD->isImplicit())
ToD->setImplicit();
}
// Check if we have found an existing definition. Returns with that
// definition if yes, otherwise returns null.
Decl *FindAndMapDefinition(FunctionDecl *D, FunctionDecl *FoundFunction) {
const FunctionDecl *Definition = nullptr;
if (D->doesThisDeclarationHaveABody() &&
FoundFunction->hasBody(Definition))
return Importer.MapImported(D, const_cast<FunctionDecl *>(Definition));
return nullptr;
}
void addDeclToContexts(Decl *FromD, Decl *ToD) {
if (Importer.isMinimalImport()) {
// In minimal import case the decl must be added even if it is not
// contained in original context, for LLDB compatibility.
// FIXME: Check if a better solution is possible.
if (!FromD->getDescribedTemplate() &&
FromD->getFriendObjectKind() == Decl::FOK_None)
ToD->getLexicalDeclContext()->addDeclInternal(ToD);
return;
}
DeclContext *FromDC = FromD->getDeclContext();
DeclContext *FromLexicalDC = FromD->getLexicalDeclContext();
DeclContext *ToDC = ToD->getDeclContext();
DeclContext *ToLexicalDC = ToD->getLexicalDeclContext();
bool Visible = false;
if (FromDC->containsDeclAndLoad(FromD)) {
ToDC->addDeclInternal(ToD);
Visible = true;
}
if (ToDC != ToLexicalDC && FromLexicalDC->containsDeclAndLoad(FromD)) {
ToLexicalDC->addDeclInternal(ToD);
Visible = true;
}
// If the Decl was added to any context, it was made already visible.
// Otherwise it is still possible that it should be visible.
if (!Visible) {
if (auto *FromNamed = dyn_cast<NamedDecl>(FromD)) {
auto *ToNamed = cast<NamedDecl>(ToD);
DeclContextLookupResult FromLookup =
FromDC->lookup(FromNamed->getDeclName());
if (llvm::is_contained(FromLookup, FromNamed))
ToDC->makeDeclVisibleInContext(ToNamed);
}
}
}
void updateLookupTableForTemplateParameters(TemplateParameterList &Params,
DeclContext *OldDC) {
ASTImporterLookupTable *LT = Importer.SharedState->getLookupTable();
if (!LT)
return;
for (NamedDecl *TP : Params)
LT->update(TP, OldDC);
}
void updateLookupTableForTemplateParameters(TemplateParameterList &Params) {
updateLookupTableForTemplateParameters(
Params, Importer.getToContext().getTranslationUnitDecl());
}
public:
explicit ASTNodeImporter(ASTImporter &Importer) : Importer(Importer) {}
using TypeVisitor<ASTNodeImporter, ExpectedType>::Visit;
using DeclVisitor<ASTNodeImporter, ExpectedDecl>::Visit;
using StmtVisitor<ASTNodeImporter, ExpectedStmt>::Visit;
// Importing types
ExpectedType VisitType(const Type *T);
#define TYPE(Class, Base) \
ExpectedType Visit##Class##Type(const Class##Type *T);
#include "clang/AST/TypeNodes.inc"
// Importing declarations
Error ImportDeclParts(NamedDecl *D, DeclarationName &Name, NamedDecl *&ToD,
SourceLocation &Loc);
Error ImportDeclParts(
NamedDecl *D, DeclContext *&DC, DeclContext *&LexicalDC,
DeclarationName &Name, NamedDecl *&ToD, SourceLocation &Loc);
Error ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD = nullptr);
Error ImportDeclarationNameLoc(
const DeclarationNameInfo &From, DeclarationNameInfo &To);
Error ImportDeclContext(DeclContext *FromDC, bool ForceImport = false);
Error ImportDeclContext(
Decl *From, DeclContext *&ToDC, DeclContext *&ToLexicalDC);
Error ImportImplicitMethods(const CXXRecordDecl *From, CXXRecordDecl *To);
Error ImportFieldDeclDefinition(const FieldDecl *From, const FieldDecl *To);
Expected<CXXCastPath> ImportCastPath(CastExpr *E);
Expected<APValue> ImportAPValue(const APValue &FromValue);
using Designator = DesignatedInitExpr::Designator;
/// What we should import from the definition.
enum ImportDefinitionKind {
/// Import the default subset of the definition, which might be
/// nothing (if minimal import is set) or might be everything (if minimal
/// import is not set).
IDK_Default,
/// Import everything.
IDK_Everything,
/// Import only the bare bones needed to establish a valid
/// DeclContext.
IDK_Basic
};
bool shouldForceImportDeclContext(ImportDefinitionKind IDK) {
return IDK == IDK_Everything ||
(IDK == IDK_Default && !Importer.isMinimalImport());
}
Error ImportInitializer(VarDecl *From, VarDecl *To);
Error ImportDefinition(
RecordDecl *From, RecordDecl *To,
ImportDefinitionKind Kind = IDK_Default);
Error ImportDefinition(
EnumDecl *From, EnumDecl *To,
ImportDefinitionKind Kind = IDK_Default);
Error ImportDefinition(
ObjCInterfaceDecl *From, ObjCInterfaceDecl *To,
ImportDefinitionKind Kind = IDK_Default);
Error ImportDefinition(
ObjCProtocolDecl *From, ObjCProtocolDecl *To,
ImportDefinitionKind Kind = IDK_Default);
Error ImportTemplateArguments(ArrayRef<TemplateArgument> FromArgs,
SmallVectorImpl<TemplateArgument> &ToArgs);
Expected<TemplateArgument>
ImportTemplateArgument(const TemplateArgument &From);
template <typename InContainerTy>
Error ImportTemplateArgumentListInfo(
const InContainerTy &Container, TemplateArgumentListInfo &ToTAInfo);
template<typename InContainerTy>
Error ImportTemplateArgumentListInfo(
SourceLocation FromLAngleLoc, SourceLocation FromRAngleLoc,
const InContainerTy &Container, TemplateArgumentListInfo &Result);
using TemplateArgsTy = SmallVector<TemplateArgument, 8>;
using FunctionTemplateAndArgsTy =
std::tuple<FunctionTemplateDecl *, TemplateArgsTy>;
Expected<FunctionTemplateAndArgsTy>
ImportFunctionTemplateWithTemplateArgsFromSpecialization(
FunctionDecl *FromFD);
Error ImportTemplateParameterLists(const DeclaratorDecl *FromD,
DeclaratorDecl *ToD);
Error ImportTemplateInformation(FunctionDecl *FromFD, FunctionDecl *ToFD);
Error ImportFunctionDeclBody(FunctionDecl *FromFD, FunctionDecl *ToFD);
Error ImportDefaultArgOfParmVarDecl(const ParmVarDecl *FromParam,
ParmVarDecl *ToParam);
Expected<InheritedConstructor>
ImportInheritedConstructor(const InheritedConstructor &From);
template <typename T>
bool hasSameVisibilityContextAndLinkage(T *Found, T *From);
bool IsStructuralMatch(Decl *From, Decl *To, bool Complain = true,
bool IgnoreTemplateParmDepth = false);
ExpectedDecl VisitDecl(Decl *D);
ExpectedDecl VisitImportDecl(ImportDecl *D);
ExpectedDecl VisitEmptyDecl(EmptyDecl *D);
ExpectedDecl VisitAccessSpecDecl(AccessSpecDecl *D);
ExpectedDecl VisitStaticAssertDecl(StaticAssertDecl *D);
ExpectedDecl VisitTranslationUnitDecl(TranslationUnitDecl *D);
ExpectedDecl VisitBindingDecl(BindingDecl *D);
ExpectedDecl VisitNamespaceDecl(NamespaceDecl *D);
ExpectedDecl VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
ExpectedDecl VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias);
ExpectedDecl VisitTypedefDecl(TypedefDecl *D);
ExpectedDecl VisitTypeAliasDecl(TypeAliasDecl *D);
ExpectedDecl VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
ExpectedDecl VisitLabelDecl(LabelDecl *D);
ExpectedDecl VisitEnumDecl(EnumDecl *D);
ExpectedDecl VisitRecordDecl(RecordDecl *D);
ExpectedDecl VisitEnumConstantDecl(EnumConstantDecl *D);
ExpectedDecl VisitFunctionDecl(FunctionDecl *D);
ExpectedDecl VisitCXXMethodDecl(CXXMethodDecl *D);
ExpectedDecl VisitCXXConstructorDecl(CXXConstructorDecl *D);
ExpectedDecl VisitCXXDestructorDecl(CXXDestructorDecl *D);
ExpectedDecl VisitCXXConversionDecl(CXXConversionDecl *D);
ExpectedDecl VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D);
ExpectedDecl VisitFieldDecl(FieldDecl *D);
ExpectedDecl VisitIndirectFieldDecl(IndirectFieldDecl *D);
ExpectedDecl VisitFriendDecl(FriendDecl *D);
ExpectedDecl VisitObjCIvarDecl(ObjCIvarDecl *D);
ExpectedDecl VisitVarDecl(VarDecl *D);
ExpectedDecl VisitImplicitParamDecl(ImplicitParamDecl *D);
ExpectedDecl VisitParmVarDecl(ParmVarDecl *D);
ExpectedDecl VisitObjCMethodDecl(ObjCMethodDecl *D);
ExpectedDecl VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
ExpectedDecl VisitObjCCategoryDecl(ObjCCategoryDecl *D);
ExpectedDecl VisitObjCProtocolDecl(ObjCProtocolDecl *D);
ExpectedDecl VisitLinkageSpecDecl(LinkageSpecDecl *D);
ExpectedDecl VisitUsingDecl(UsingDecl *D);
ExpectedDecl VisitUsingShadowDecl(UsingShadowDecl *D);
ExpectedDecl VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
ExpectedDecl VisitUsingPackDecl(UsingPackDecl *D);
ExpectedDecl ImportUsingShadowDecls(BaseUsingDecl *D, BaseUsingDecl *ToSI);
ExpectedDecl VisitUsingEnumDecl(UsingEnumDecl *D);
ExpectedDecl VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
ExpectedDecl VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
ExpectedDecl VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D);
ExpectedDecl
VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
Expected<ObjCTypeParamList *>
ImportObjCTypeParamList(ObjCTypeParamList *list);
ExpectedDecl VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
ExpectedDecl VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
ExpectedDecl VisitObjCImplementationDecl(ObjCImplementationDecl *D);
ExpectedDecl VisitObjCPropertyDecl(ObjCPropertyDecl *D);
ExpectedDecl VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
ExpectedDecl VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
ExpectedDecl VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
ExpectedDecl VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
ExpectedDecl VisitClassTemplateDecl(ClassTemplateDecl *D);
ExpectedDecl VisitClassTemplateSpecializationDecl(
ClassTemplateSpecializationDecl *D);
ExpectedDecl VisitVarTemplateDecl(VarTemplateDecl *D);
ExpectedDecl VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
ExpectedDecl VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
// Importing statements
ExpectedStmt VisitStmt(Stmt *S);
ExpectedStmt VisitGCCAsmStmt(GCCAsmStmt *S);
ExpectedStmt VisitDeclStmt(DeclStmt *S);
ExpectedStmt VisitNullStmt(NullStmt *S);
ExpectedStmt VisitCompoundStmt(CompoundStmt *S);
ExpectedStmt VisitCaseStmt(CaseStmt *S);
ExpectedStmt VisitDefaultStmt(DefaultStmt *S);
ExpectedStmt VisitLabelStmt(LabelStmt *S);
ExpectedStmt VisitAttributedStmt(AttributedStmt *S);
ExpectedStmt VisitIfStmt(IfStmt *S);
ExpectedStmt VisitSwitchStmt(SwitchStmt *S);
ExpectedStmt VisitWhileStmt(WhileStmt *S);
ExpectedStmt VisitDoStmt(DoStmt *S);
ExpectedStmt VisitForStmt(ForStmt *S);
ExpectedStmt VisitGotoStmt(GotoStmt *S);
ExpectedStmt VisitIndirectGotoStmt(IndirectGotoStmt *S);
ExpectedStmt VisitContinueStmt(ContinueStmt *S);
ExpectedStmt VisitBreakStmt(BreakStmt *S);
ExpectedStmt VisitReturnStmt(ReturnStmt *S);
// FIXME: MSAsmStmt
// FIXME: SEHExceptStmt
// FIXME: SEHFinallyStmt
// FIXME: SEHTryStmt
// FIXME: SEHLeaveStmt
// FIXME: CapturedStmt
ExpectedStmt VisitCXXCatchStmt(CXXCatchStmt *S);
ExpectedStmt VisitCXXTryStmt(CXXTryStmt *S);
ExpectedStmt VisitCXXForRangeStmt(CXXForRangeStmt *S);
// FIXME: MSDependentExistsStmt
ExpectedStmt VisitObjCForCollectionStmt(ObjCForCollectionStmt *S);
ExpectedStmt VisitObjCAtCatchStmt(ObjCAtCatchStmt *S);
ExpectedStmt VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S);
ExpectedStmt VisitObjCAtTryStmt(ObjCAtTryStmt *S);
ExpectedStmt VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S);
ExpectedStmt VisitObjCAtThrowStmt(ObjCAtThrowStmt *S);
ExpectedStmt VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S);
// Importing expressions
ExpectedStmt VisitExpr(Expr *E);
ExpectedStmt VisitSourceLocExpr(SourceLocExpr *E);
ExpectedStmt VisitVAArgExpr(VAArgExpr *E);
ExpectedStmt VisitChooseExpr(ChooseExpr *E);
ExpectedStmt VisitConvertVectorExpr(ConvertVectorExpr *E);
ExpectedStmt VisitShuffleVectorExpr(ShuffleVectorExpr *E);
ExpectedStmt VisitGNUNullExpr(GNUNullExpr *E);
ExpectedStmt VisitGenericSelectionExpr(GenericSelectionExpr *E);
ExpectedStmt VisitPredefinedExpr(PredefinedExpr *E);
ExpectedStmt VisitDeclRefExpr(DeclRefExpr *E);
ExpectedStmt VisitImplicitValueInitExpr(ImplicitValueInitExpr *E);
ExpectedStmt VisitDesignatedInitExpr(DesignatedInitExpr *E);
ExpectedStmt VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E);
ExpectedStmt VisitIntegerLiteral(IntegerLiteral *E);
ExpectedStmt VisitFloatingLiteral(FloatingLiteral *E);
ExpectedStmt VisitImaginaryLiteral(ImaginaryLiteral *E);
ExpectedStmt VisitFixedPointLiteral(FixedPointLiteral *E);
ExpectedStmt VisitCharacterLiteral(CharacterLiteral *E);
ExpectedStmt VisitStringLiteral(StringLiteral *E);
ExpectedStmt VisitCompoundLiteralExpr(CompoundLiteralExpr *E);
ExpectedStmt VisitAtomicExpr(AtomicExpr *E);
ExpectedStmt VisitAddrLabelExpr(AddrLabelExpr *E);
ExpectedStmt VisitConstantExpr(ConstantExpr *E);
ExpectedStmt VisitParenExpr(ParenExpr *E);
ExpectedStmt VisitParenListExpr(ParenListExpr *E);
ExpectedStmt VisitStmtExpr(StmtExpr *E);
ExpectedStmt VisitUnaryOperator(UnaryOperator *E);
ExpectedStmt VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E);
ExpectedStmt VisitBinaryOperator(BinaryOperator *E);
ExpectedStmt VisitConditionalOperator(ConditionalOperator *E);
ExpectedStmt VisitBinaryConditionalOperator(BinaryConditionalOperator *E);
ExpectedStmt VisitCXXRewrittenBinaryOperator(CXXRewrittenBinaryOperator *E);
ExpectedStmt VisitOpaqueValueExpr(OpaqueValueExpr *E);
ExpectedStmt VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E);
ExpectedStmt VisitExpressionTraitExpr(ExpressionTraitExpr *E);
ExpectedStmt VisitArraySubscriptExpr(ArraySubscriptExpr *E);
ExpectedStmt VisitCompoundAssignOperator(CompoundAssignOperator *E);
ExpectedStmt VisitImplicitCastExpr(ImplicitCastExpr *E);
ExpectedStmt VisitExplicitCastExpr(ExplicitCastExpr *E);
ExpectedStmt VisitOffsetOfExpr(OffsetOfExpr *OE);
ExpectedStmt VisitCXXThrowExpr(CXXThrowExpr *E);
ExpectedStmt VisitCXXNoexceptExpr(CXXNoexceptExpr *E);
ExpectedStmt VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E);
ExpectedStmt VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E);
ExpectedStmt VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E);
ExpectedStmt VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E);
ExpectedStmt VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E);
ExpectedStmt VisitPackExpansionExpr(PackExpansionExpr *E);
ExpectedStmt VisitSizeOfPackExpr(SizeOfPackExpr *E);
ExpectedStmt VisitCXXNewExpr(CXXNewExpr *E);
ExpectedStmt VisitCXXDeleteExpr(CXXDeleteExpr *E);
ExpectedStmt VisitCXXConstructExpr(CXXConstructExpr *E);
ExpectedStmt VisitCXXMemberCallExpr(CXXMemberCallExpr *E);
ExpectedStmt VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E);
ExpectedStmt VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E);
ExpectedStmt VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E);
ExpectedStmt VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E);
ExpectedStmt VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E);
ExpectedStmt VisitExprWithCleanups(ExprWithCleanups *E);
ExpectedStmt VisitCXXThisExpr(CXXThisExpr *E);
ExpectedStmt VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E);
ExpectedStmt VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E);
ExpectedStmt VisitMemberExpr(MemberExpr *E);
ExpectedStmt VisitCallExpr(CallExpr *E);
ExpectedStmt VisitLambdaExpr(LambdaExpr *LE);
ExpectedStmt VisitInitListExpr(InitListExpr *E);
ExpectedStmt VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E);
ExpectedStmt VisitCXXInheritedCtorInitExpr(CXXInheritedCtorInitExpr *E);
ExpectedStmt VisitArrayInitLoopExpr(ArrayInitLoopExpr *E);
ExpectedStmt VisitArrayInitIndexExpr(ArrayInitIndexExpr *E);
ExpectedStmt VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E);
ExpectedStmt VisitCXXNamedCastExpr(CXXNamedCastExpr *E);
ExpectedStmt VisitSubstNonTypeTemplateParmExpr(SubstNonTypeTemplateParmExpr *E);
ExpectedStmt VisitTypeTraitExpr(TypeTraitExpr *E);
ExpectedStmt VisitCXXTypeidExpr(CXXTypeidExpr *E);
ExpectedStmt VisitCXXFoldExpr(CXXFoldExpr *E);
// Helper for chaining together multiple imports. If an error is detected,
// subsequent imports will return default constructed nodes, so that failure
// can be detected with a single conditional branch after a sequence of
// imports.
template <typename T> T importChecked(Error &Err, const T &From) {
// Don't attempt to import nodes if we hit an error earlier.
if (Err)
return T{};
Expected<T> MaybeVal = import(From);
if (!MaybeVal) {
Err = MaybeVal.takeError();
return T{};
}
return *MaybeVal;
}
template<typename IIter, typename OIter>
Error ImportArrayChecked(IIter Ibegin, IIter Iend, OIter Obegin) {
using ItemT = std::remove_reference_t<decltype(*Obegin)>;
for (; Ibegin != Iend; ++Ibegin, ++Obegin) {
Expected<ItemT> ToOrErr = import(*Ibegin);
if (!ToOrErr)
return ToOrErr.takeError();
*Obegin = *ToOrErr;
}
return Error::success();
}
// Import every item from a container structure into an output container.
// If error occurs, stops at first error and returns the error.
// The output container should have space for all needed elements (it is not
// expanded, new items are put into from the beginning).
template<typename InContainerTy, typename OutContainerTy>
Error ImportContainerChecked(
const InContainerTy &InContainer, OutContainerTy &OutContainer) {
return ImportArrayChecked(
InContainer.begin(), InContainer.end(), OutContainer.begin());
}
template<typename InContainerTy, typename OIter>
Error ImportArrayChecked(const InContainerTy &InContainer, OIter Obegin) {
return ImportArrayChecked(InContainer.begin(), InContainer.end(), Obegin);
}
Error ImportOverriddenMethods(CXXMethodDecl *ToMethod,
CXXMethodDecl *FromMethod);
Expected<FunctionDecl *> FindFunctionTemplateSpecialization(
FunctionDecl *FromFD);
// Returns true if the given function has a placeholder return type and
// that type is declared inside the body of the function.
// E.g. auto f() { struct X{}; return X(); }
bool hasAutoReturnTypeDeclaredInside(FunctionDecl *D);
};
template <typename InContainerTy>
Error ASTNodeImporter::ImportTemplateArgumentListInfo(
SourceLocation FromLAngleLoc, SourceLocation FromRAngleLoc,
const InContainerTy &Container, TemplateArgumentListInfo &Result) {
auto ToLAngleLocOrErr = import(FromLAngleLoc);
if (!ToLAngleLocOrErr)
return ToLAngleLocOrErr.takeError();
auto ToRAngleLocOrErr = import(FromRAngleLoc);
if (!ToRAngleLocOrErr)
return ToRAngleLocOrErr.takeError();
TemplateArgumentListInfo ToTAInfo(*ToLAngleLocOrErr, *ToRAngleLocOrErr);
if (auto Err = ImportTemplateArgumentListInfo(Container, ToTAInfo))
return Err;
Result = ToTAInfo;
return Error::success();
}
template <>
Error ASTNodeImporter::ImportTemplateArgumentListInfo<TemplateArgumentListInfo>(
const TemplateArgumentListInfo &From, TemplateArgumentListInfo &Result) {
return ImportTemplateArgumentListInfo(
From.getLAngleLoc(), From.getRAngleLoc(), From.arguments(), Result);
}
template <>
Error ASTNodeImporter::ImportTemplateArgumentListInfo<
ASTTemplateArgumentListInfo>(
const ASTTemplateArgumentListInfo &From,
TemplateArgumentListInfo &Result) {
return ImportTemplateArgumentListInfo(
From.LAngleLoc, From.RAngleLoc, From.arguments(), Result);
}
Expected<ASTNodeImporter::FunctionTemplateAndArgsTy>
ASTNodeImporter::ImportFunctionTemplateWithTemplateArgsFromSpecialization(
FunctionDecl *FromFD) {
assert(FromFD->getTemplatedKind() ==
FunctionDecl::TK_FunctionTemplateSpecialization);
FunctionTemplateAndArgsTy Result;
auto *FTSInfo = FromFD->getTemplateSpecializationInfo();
if (Error Err = importInto(std::get<0>(Result), FTSInfo->getTemplate()))
return std::move(Err);
// Import template arguments.
if (Error Err = ImportTemplateArguments(FTSInfo->TemplateArguments->asArray(),
std::get<1>(Result)))
return std::move(Err);
return Result;
}
template <>
Expected<TemplateParameterList *>
ASTNodeImporter::import(TemplateParameterList *From) {
SmallVector<NamedDecl *, 4> To(From->size());
if (Error Err = ImportContainerChecked(*From, To))
return std::move(Err);
ExpectedExpr ToRequiresClause = import(From->getRequiresClause());
if (!ToRequiresClause)
return ToRequiresClause.takeError();
auto ToTemplateLocOrErr = import(From->getTemplateLoc());
if (!ToTemplateLocOrErr)
return ToTemplateLocOrErr.takeError();
auto ToLAngleLocOrErr = import(From->getLAngleLoc());
if (!ToLAngleLocOrErr)
return ToLAngleLocOrErr.takeError();
auto ToRAngleLocOrErr = import(From->getRAngleLoc());
if (!ToRAngleLocOrErr)
return ToRAngleLocOrErr.takeError();
return TemplateParameterList::Create(
Importer.getToContext(),
*ToTemplateLocOrErr,
*ToLAngleLocOrErr,
To,
*ToRAngleLocOrErr,
*ToRequiresClause);
}
template <>
Expected<TemplateArgument>
ASTNodeImporter::import(const TemplateArgument &From) {
switch (From.getKind()) {
case TemplateArgument::Null:
return TemplateArgument();
case TemplateArgument::Type: {
ExpectedType ToTypeOrErr = import(From.getAsType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
return TemplateArgument(*ToTypeOrErr, /*isNullPtr*/ false,
From.getIsDefaulted());
}
case TemplateArgument::Integral: {
ExpectedType ToTypeOrErr = import(From.getIntegralType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
return TemplateArgument(From, *ToTypeOrErr);
}
case TemplateArgument::Declaration: {
Expected<ValueDecl *> ToOrErr = import(From.getAsDecl());
if (!ToOrErr)
return ToOrErr.takeError();
ExpectedType ToTypeOrErr = import(From.getParamTypeForDecl());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
return TemplateArgument(dyn_cast<ValueDecl>((*ToOrErr)->getCanonicalDecl()),
*ToTypeOrErr, From.getIsDefaulted());
}
case TemplateArgument::NullPtr: {
ExpectedType ToTypeOrErr = import(From.getNullPtrType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
return TemplateArgument(*ToTypeOrErr, /*isNullPtr*/ true,
From.getIsDefaulted());
}
case TemplateArgument::StructuralValue: {
ExpectedType ToTypeOrErr = import(From.getStructuralValueType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
Expected<APValue> ToValueOrErr = import(From.getAsStructuralValue());
if (!ToValueOrErr)
return ToValueOrErr.takeError();
return TemplateArgument(Importer.getToContext(), *ToTypeOrErr,
*ToValueOrErr);
}
case TemplateArgument::Template: {
Expected<TemplateName> ToTemplateOrErr = import(From.getAsTemplate());
if (!ToTemplateOrErr)
return ToTemplateOrErr.takeError();
return TemplateArgument(*ToTemplateOrErr, From.getIsDefaulted());
}
case TemplateArgument::TemplateExpansion: {
Expected<TemplateName> ToTemplateOrErr =
import(From.getAsTemplateOrTemplatePattern());
if (!ToTemplateOrErr)
return ToTemplateOrErr.takeError();
return TemplateArgument(*ToTemplateOrErr, From.getNumTemplateExpansions(),
From.getIsDefaulted());
}
case TemplateArgument::Expression:
if (ExpectedExpr ToExpr = import(From.getAsExpr()))
return TemplateArgument(*ToExpr, From.getIsDefaulted());
else
return ToExpr.takeError();
case TemplateArgument::Pack: {
SmallVector<TemplateArgument, 2> ToPack;
ToPack.reserve(From.pack_size());
if (Error Err = ImportTemplateArguments(From.pack_elements(), ToPack))
return std::move(Err);
return TemplateArgument(
llvm::ArrayRef(ToPack).copy(Importer.getToContext()));
}
}
llvm_unreachable("Invalid template argument kind");
}
template <>
Expected<TemplateArgumentLoc>
ASTNodeImporter::import(const TemplateArgumentLoc &TALoc) {
Expected<TemplateArgument> ArgOrErr = import(TALoc.getArgument());
if (!ArgOrErr)
return ArgOrErr.takeError();
TemplateArgument Arg = *ArgOrErr;
TemplateArgumentLocInfo FromInfo = TALoc.getLocInfo();
TemplateArgumentLocInfo ToInfo;
if (Arg.getKind() == TemplateArgument::Expression) {
ExpectedExpr E = import(FromInfo.getAsExpr());
if (!E)
return E.takeError();
ToInfo = TemplateArgumentLocInfo(*E);
} else if (Arg.getKind() == TemplateArgument::Type) {
if (auto TSIOrErr = import(FromInfo.getAsTypeSourceInfo()))
ToInfo = TemplateArgumentLocInfo(*TSIOrErr);
else
return TSIOrErr.takeError();
} else {
auto ToTemplateQualifierLocOrErr =
import(FromInfo.getTemplateQualifierLoc());
if (!ToTemplateQualifierLocOrErr)
return ToTemplateQualifierLocOrErr.takeError();
auto ToTemplateNameLocOrErr = import(FromInfo.getTemplateNameLoc());
if (!ToTemplateNameLocOrErr)
return ToTemplateNameLocOrErr.takeError();
auto ToTemplateEllipsisLocOrErr =
import(FromInfo.getTemplateEllipsisLoc());
if (!ToTemplateEllipsisLocOrErr)
return ToTemplateEllipsisLocOrErr.takeError();
ToInfo = TemplateArgumentLocInfo(
Importer.getToContext(), *ToTemplateQualifierLocOrErr,
*ToTemplateNameLocOrErr, *ToTemplateEllipsisLocOrErr);
}
return TemplateArgumentLoc(Arg, ToInfo);
}
template <>
Expected<DeclGroupRef> ASTNodeImporter::import(const DeclGroupRef &DG) {
if (DG.isNull())
return DeclGroupRef::Create(Importer.getToContext(), nullptr, 0);
size_t NumDecls = DG.end() - DG.begin();
SmallVector<Decl *, 1> ToDecls;
ToDecls.reserve(NumDecls);
for (Decl *FromD : DG) {
if (auto ToDOrErr = import(FromD))
ToDecls.push_back(*ToDOrErr);
else
return ToDOrErr.takeError();
}
return DeclGroupRef::Create(Importer.getToContext(),
ToDecls.begin(),
NumDecls);
}
template <>
Expected<ASTNodeImporter::Designator>
ASTNodeImporter::import(const Designator &D) {
if (D.isFieldDesignator()) {
IdentifierInfo *ToFieldName = Importer.Import(D.getFieldName());
ExpectedSLoc ToDotLocOrErr = import(D.getDotLoc());
if (!ToDotLocOrErr)
return ToDotLocOrErr.takeError();
ExpectedSLoc ToFieldLocOrErr = import(D.getFieldLoc());
if (!ToFieldLocOrErr)
return ToFieldLocOrErr.takeError();
return DesignatedInitExpr::Designator::CreateFieldDesignator(
ToFieldName, *ToDotLocOrErr, *ToFieldLocOrErr);
}
ExpectedSLoc ToLBracketLocOrErr = import(D.getLBracketLoc());
if (!ToLBracketLocOrErr)
return ToLBracketLocOrErr.takeError();
ExpectedSLoc ToRBracketLocOrErr = import(D.getRBracketLoc());
if (!ToRBracketLocOrErr)
return ToRBracketLocOrErr.takeError();
if (D.isArrayDesignator())
return Designator::CreateArrayDesignator(D.getArrayIndex(),
*ToLBracketLocOrErr,
*ToRBracketLocOrErr);
ExpectedSLoc ToEllipsisLocOrErr = import(D.getEllipsisLoc());
if (!ToEllipsisLocOrErr)
return ToEllipsisLocOrErr.takeError();
assert(D.isArrayRangeDesignator());
return Designator::CreateArrayRangeDesignator(
D.getArrayIndex(), *ToLBracketLocOrErr, *ToEllipsisLocOrErr,
*ToRBracketLocOrErr);
}
template <>
Expected<ConceptReference *> ASTNodeImporter::import(ConceptReference *From) {
Error Err = Error::success();
auto ToNNS = importChecked(Err, From->getNestedNameSpecifierLoc());
auto ToTemplateKWLoc = importChecked(Err, From->getTemplateKWLoc());
auto ToConceptNameLoc =
importChecked(Err, From->getConceptNameInfo().getLoc());
auto ToConceptName = importChecked(Err, From->getConceptNameInfo().getName());
auto ToFoundDecl = importChecked(Err, From->getFoundDecl());
auto ToNamedConcept = importChecked(Err, From->getNamedConcept());
if (Err)
return std::move(Err);
TemplateArgumentListInfo ToTAInfo;
const auto *ASTTemplateArgs = From->getTemplateArgsAsWritten();
if (ASTTemplateArgs)
if (Error Err = ImportTemplateArgumentListInfo(*ASTTemplateArgs, ToTAInfo))
return std::move(Err);
auto *ConceptRef = ConceptReference::Create(
Importer.getToContext(), ToNNS, ToTemplateKWLoc,
DeclarationNameInfo(ToConceptName, ToConceptNameLoc), ToFoundDecl,
ToNamedConcept,
ASTTemplateArgs ? ASTTemplateArgumentListInfo::Create(
Importer.getToContext(), ToTAInfo)
: nullptr);
return ConceptRef;
}
template <>
Expected<LambdaCapture> ASTNodeImporter::import(const LambdaCapture &From) {
ValueDecl *Var = nullptr;
if (From.capturesVariable()) {
if (auto VarOrErr = import(From.getCapturedVar()))
Var = *VarOrErr;
else
return VarOrErr.takeError();
}
auto LocationOrErr = import(From.getLocation());
if (!LocationOrErr)
return LocationOrErr.takeError();
SourceLocation EllipsisLoc;
if (From.isPackExpansion())
if (Error Err = importInto(EllipsisLoc, From.getEllipsisLoc()))
return std::move(Err);
return LambdaCapture(
*LocationOrErr, From.isImplicit(), From.getCaptureKind(), Var,
EllipsisLoc);
}
template <typename T>
bool ASTNodeImporter::hasSameVisibilityContextAndLinkage(T *Found, T *From) {
if (Found->getLinkageInternal() != From->getLinkageInternal())
return false;
if (From->hasExternalFormalLinkage())
return Found->hasExternalFormalLinkage();
if (Importer.GetFromTU(Found) != From->getTranslationUnitDecl())
return false;
if (From->isInAnonymousNamespace())
return Found->isInAnonymousNamespace();
else
return !Found->isInAnonymousNamespace() &&
!Found->hasExternalFormalLinkage();
}
template <>
bool ASTNodeImporter::hasSameVisibilityContextAndLinkage(TypedefNameDecl *Found,
TypedefNameDecl *From) {
if (Found->getLinkageInternal() != From->getLinkageInternal())
return false;
if (From->isInAnonymousNamespace() && Found->isInAnonymousNamespace())
return Importer.GetFromTU(Found) == From->getTranslationUnitDecl();
return From->isInAnonymousNamespace() == Found->isInAnonymousNamespace();
}
} // namespace clang
//----------------------------------------------------------------------------
// Import Types
//----------------------------------------------------------------------------
using namespace clang;
ExpectedType ASTNodeImporter::VisitType(const Type *T) {
Importer.FromDiag(SourceLocation(), diag::err_unsupported_ast_node)
<< T->getTypeClassName();
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
}
ExpectedType ASTNodeImporter::VisitAtomicType(const AtomicType *T){
ExpectedType UnderlyingTypeOrErr = import(T->getValueType());
if (!UnderlyingTypeOrErr)
return UnderlyingTypeOrErr.takeError();
return Importer.getToContext().getAtomicType(*UnderlyingTypeOrErr);
}
ExpectedType ASTNodeImporter::VisitBuiltinType(const BuiltinType *T) {
switch (T->getKind()) {
#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
case BuiltinType::Id: \
return Importer.getToContext().SingletonId;
#include "clang/Basic/OpenCLImageTypes.def"
#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
case BuiltinType::Id: \
return Importer.getToContext().Id##Ty;
#include "clang/Basic/OpenCLExtensionTypes.def"
#define SVE_TYPE(Name, Id, SingletonId) \
case BuiltinType::Id: \
return Importer.getToContext().SingletonId;
#include "clang/Basic/AArch64SVEACLETypes.def"
#define PPC_VECTOR_TYPE(Name, Id, Size) \
case BuiltinType::Id: \
return Importer.getToContext().Id##Ty;
#include "clang/Basic/PPCTypes.def"
#define RVV_TYPE(Name, Id, SingletonId) \
case BuiltinType::Id: \
return Importer.getToContext().SingletonId;
#include "clang/Basic/RISCVVTypes.def"
#define WASM_TYPE(Name, Id, SingletonId) \
case BuiltinType::Id: \
return Importer.getToContext().SingletonId;
#include "clang/Basic/WebAssemblyReferenceTypes.def"
#define SHARED_SINGLETON_TYPE(Expansion)
#define BUILTIN_TYPE(Id, SingletonId) \
case BuiltinType::Id: return Importer.getToContext().SingletonId;
#include "clang/AST/BuiltinTypes.def"
// FIXME: for Char16, Char32, and NullPtr, make sure that the "to"
// context supports C++.
// FIXME: for ObjCId, ObjCClass, and ObjCSel, make sure that the "to"
// context supports ObjC.
case BuiltinType::Char_U:
// The context we're importing from has an unsigned 'char'. If we're
// importing into a context with a signed 'char', translate to
// 'unsigned char' instead.
if (Importer.getToContext().getLangOpts().CharIsSigned)
return Importer.getToContext().UnsignedCharTy;
return Importer.getToContext().CharTy;
case BuiltinType::Char_S:
// The context we're importing from has an unsigned 'char'. If we're
// importing into a context with a signed 'char', translate to
// 'unsigned char' instead.
if (!Importer.getToContext().getLangOpts().CharIsSigned)
return Importer.getToContext().SignedCharTy;
return Importer.getToContext().CharTy;
case BuiltinType::WChar_S:
case BuiltinType::WChar_U:
// FIXME: If not in C++, shall we translate to the C equivalent of
// wchar_t?
return Importer.getToContext().WCharTy;
}
llvm_unreachable("Invalid BuiltinType Kind!");
}
ExpectedType ASTNodeImporter::VisitDecayedType(const DecayedType *T) {
ExpectedType ToOriginalTypeOrErr = import(T->getOriginalType());
if (!ToOriginalTypeOrErr)
return ToOriginalTypeOrErr.takeError();
return Importer.getToContext().getDecayedType(*ToOriginalTypeOrErr);
}
ExpectedType ASTNodeImporter::VisitComplexType(const ComplexType *T) {
ExpectedType ToElementTypeOrErr = import(T->getElementType());
if (!ToElementTypeOrErr)
return ToElementTypeOrErr.takeError();
return Importer.getToContext().getComplexType(*ToElementTypeOrErr);
}
ExpectedType ASTNodeImporter::VisitPointerType(const PointerType *T) {
ExpectedType ToPointeeTypeOrErr = import(T->getPointeeType());
if (!ToPointeeTypeOrErr)
return ToPointeeTypeOrErr.takeError();
return Importer.getToContext().getPointerType(*ToPointeeTypeOrErr);
}
ExpectedType ASTNodeImporter::VisitBlockPointerType(const BlockPointerType *T) {
// FIXME: Check for blocks support in "to" context.
ExpectedType ToPointeeTypeOrErr = import(T->getPointeeType());
if (!ToPointeeTypeOrErr)
return ToPointeeTypeOrErr.takeError();
return Importer.getToContext().getBlockPointerType(*ToPointeeTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitLValueReferenceType(const LValueReferenceType *T) {
// FIXME: Check for C++ support in "to" context.
ExpectedType ToPointeeTypeOrErr = import(T->getPointeeTypeAsWritten());
if (!ToPointeeTypeOrErr)
return ToPointeeTypeOrErr.takeError();
return Importer.getToContext().getLValueReferenceType(*ToPointeeTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitRValueReferenceType(const RValueReferenceType *T) {
// FIXME: Check for C++0x support in "to" context.
ExpectedType ToPointeeTypeOrErr = import(T->getPointeeTypeAsWritten());
if (!ToPointeeTypeOrErr)
return ToPointeeTypeOrErr.takeError();
return Importer.getToContext().getRValueReferenceType(*ToPointeeTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitMemberPointerType(const MemberPointerType *T) {
// FIXME: Check for C++ support in "to" context.
ExpectedType ToPointeeTypeOrErr = import(T->getPointeeType());
if (!ToPointeeTypeOrErr)
return ToPointeeTypeOrErr.takeError();
ExpectedTypePtr ClassTypeOrErr = import(T->getClass());
if (!ClassTypeOrErr)
return ClassTypeOrErr.takeError();
return Importer.getToContext().getMemberPointerType(*ToPointeeTypeOrErr,
*ClassTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitConstantArrayType(const ConstantArrayType *T) {
Error Err = Error::success();
auto ToElementType = importChecked(Err, T->getElementType());
auto ToSizeExpr = importChecked(Err, T->getSizeExpr());
if (Err)
return std::move(Err);
return Importer.getToContext().getConstantArrayType(
ToElementType, T->getSize(), ToSizeExpr, T->getSizeModifier(),
T->getIndexTypeCVRQualifiers());
}
ExpectedType
ASTNodeImporter::VisitArrayParameterType(const ArrayParameterType *T) {
ExpectedType ToArrayTypeOrErr = VisitConstantArrayType(T);
if (!ToArrayTypeOrErr)
return ToArrayTypeOrErr.takeError();
return Importer.getToContext().getArrayParameterType(*ToArrayTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
ExpectedType ToElementTypeOrErr = import(T->getElementType());
if (!ToElementTypeOrErr)
return ToElementTypeOrErr.takeError();
return Importer.getToContext().getIncompleteArrayType(*ToElementTypeOrErr,
T->getSizeModifier(),
T->getIndexTypeCVRQualifiers());
}
ExpectedType
ASTNodeImporter::VisitVariableArrayType(const VariableArrayType *T) {
Error Err = Error::success();
QualType ToElementType = importChecked(Err, T->getElementType());
Expr *ToSizeExpr = importChecked(Err, T->getSizeExpr());
SourceRange ToBracketsRange = importChecked(Err, T->getBracketsRange());
if (Err)
return std::move(Err);
return Importer.getToContext().getVariableArrayType(
ToElementType, ToSizeExpr, T->getSizeModifier(),
T->getIndexTypeCVRQualifiers(), ToBracketsRange);
}
ExpectedType ASTNodeImporter::VisitDependentSizedArrayType(
const DependentSizedArrayType *T) {
Error Err = Error::success();
QualType ToElementType = importChecked(Err, T->getElementType());
Expr *ToSizeExpr = importChecked(Err, T->getSizeExpr());
SourceRange ToBracketsRange = importChecked(Err, T->getBracketsRange());
if (Err)
return std::move(Err);
// SizeExpr may be null if size is not specified directly.
// For example, 'int a[]'.
return Importer.getToContext().getDependentSizedArrayType(
ToElementType, ToSizeExpr, T->getSizeModifier(),
T->getIndexTypeCVRQualifiers(), ToBracketsRange);
}
ExpectedType ASTNodeImporter::VisitDependentSizedExtVectorType(
const DependentSizedExtVectorType *T) {
Error Err = Error::success();
QualType ToElementType = importChecked(Err, T->getElementType());
Expr *ToSizeExpr = importChecked(Err, T->getSizeExpr());
SourceLocation ToAttrLoc = importChecked(Err, T->getAttributeLoc());
if (Err)
return std::move(Err);
return Importer.getToContext().getDependentSizedExtVectorType(
ToElementType, ToSizeExpr, ToAttrLoc);
}
ExpectedType ASTNodeImporter::VisitVectorType(const VectorType *T) {
ExpectedType ToElementTypeOrErr = import(T->getElementType());
if (!ToElementTypeOrErr)
return ToElementTypeOrErr.takeError();
return Importer.getToContext().getVectorType(*ToElementTypeOrErr,
T->getNumElements(),
T->getVectorKind());
}
ExpectedType ASTNodeImporter::VisitExtVectorType(const ExtVectorType *T) {
ExpectedType ToElementTypeOrErr = import(T->getElementType());
if (!ToElementTypeOrErr)
return ToElementTypeOrErr.takeError();
return Importer.getToContext().getExtVectorType(*ToElementTypeOrErr,
T->getNumElements());
}
ExpectedType
ASTNodeImporter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
// FIXME: What happens if we're importing a function without a prototype
// into C++? Should we make it variadic?
ExpectedType ToReturnTypeOrErr = import(T->getReturnType());
if (!ToReturnTypeOrErr)
return ToReturnTypeOrErr.takeError();
return Importer.getToContext().getFunctionNoProtoType(*ToReturnTypeOrErr,
T->getExtInfo());
}
ExpectedType
ASTNodeImporter::VisitFunctionProtoType(const FunctionProtoType *T) {
ExpectedType ToReturnTypeOrErr = import(T->getReturnType());
if (!ToReturnTypeOrErr)
return ToReturnTypeOrErr.takeError();
// Import argument types
SmallVector<QualType, 4> ArgTypes;
for (const auto &A : T->param_types()) {
ExpectedType TyOrErr = import(A);
if (!TyOrErr)
return TyOrErr.takeError();
ArgTypes.push_back(*TyOrErr);
}
// Import exception types
SmallVector<QualType, 4> ExceptionTypes;
for (const auto &E : T->exceptions()) {
ExpectedType TyOrErr = import(E);
if (!TyOrErr)
return TyOrErr.takeError();
ExceptionTypes.push_back(*TyOrErr);
}
FunctionProtoType::ExtProtoInfo FromEPI = T->getExtProtoInfo();
Error Err = Error::success();
FunctionProtoType::ExtProtoInfo ToEPI;
ToEPI.ExtInfo = FromEPI.ExtInfo;
ToEPI.Variadic = FromEPI.Variadic;
ToEPI.HasTrailingReturn = FromEPI.HasTrailingReturn;
ToEPI.TypeQuals = FromEPI.TypeQuals;
ToEPI.RefQualifier = FromEPI.RefQualifier;
ToEPI.ExceptionSpec.Type = FromEPI.ExceptionSpec.Type;
ToEPI.ExceptionSpec.NoexceptExpr =
importChecked(Err, FromEPI.ExceptionSpec.NoexceptExpr);
ToEPI.ExceptionSpec.SourceDecl =
importChecked(Err, FromEPI.ExceptionSpec.SourceDecl);
ToEPI.ExceptionSpec.SourceTemplate =
importChecked(Err, FromEPI.ExceptionSpec.SourceTemplate);
ToEPI.ExceptionSpec.Exceptions = ExceptionTypes;
if (Err)
return std::move(Err);
return Importer.getToContext().getFunctionType(
*ToReturnTypeOrErr, ArgTypes, ToEPI);
}
ExpectedType ASTNodeImporter::VisitUnresolvedUsingType(
const UnresolvedUsingType *T) {
Error Err = Error::success();
auto ToD = importChecked(Err, T->getDecl());
auto ToPrevD = importChecked(Err, T->getDecl()->getPreviousDecl());
if (Err)
return std::move(Err);
return Importer.getToContext().getTypeDeclType(
ToD, cast_or_null<TypeDecl>(ToPrevD));
}
ExpectedType ASTNodeImporter::VisitParenType(const ParenType *T) {
ExpectedType ToInnerTypeOrErr = import(T->getInnerType());
if (!ToInnerTypeOrErr)
return ToInnerTypeOrErr.takeError();
return Importer.getToContext().getParenType(*ToInnerTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitPackIndexingType(clang::PackIndexingType const *T) {
ExpectedType Pattern = import(T->getPattern());
if (!Pattern)
return Pattern.takeError();
ExpectedExpr Index = import(T->getIndexExpr());
if (!Index)
return Index.takeError();
return Importer.getToContext().getPackIndexingType(*Pattern, *Index);
}
ExpectedType ASTNodeImporter::VisitTypedefType(const TypedefType *T) {
Expected<TypedefNameDecl *> ToDeclOrErr = import(T->getDecl());
if (!ToDeclOrErr)
return ToDeclOrErr.takeError();
TypedefNameDecl *ToDecl = *ToDeclOrErr;
if (ToDecl->getTypeForDecl())
return QualType(ToDecl->getTypeForDecl(), 0);
ExpectedType ToUnderlyingTypeOrErr = import(T->desugar());
if (!ToUnderlyingTypeOrErr)
return ToUnderlyingTypeOrErr.takeError();
return Importer.getToContext().getTypedefType(ToDecl, *ToUnderlyingTypeOrErr);
}
ExpectedType ASTNodeImporter::VisitTypeOfExprType(const TypeOfExprType *T) {
ExpectedExpr ToExprOrErr = import(T->getUnderlyingExpr());
if (!ToExprOrErr)
return ToExprOrErr.takeError();
return Importer.getToContext().getTypeOfExprType(*ToExprOrErr, T->getKind());
}
ExpectedType ASTNodeImporter::VisitTypeOfType(const TypeOfType *T) {
ExpectedType ToUnderlyingTypeOrErr = import(T->getUnmodifiedType());
if (!ToUnderlyingTypeOrErr)
return ToUnderlyingTypeOrErr.takeError();
return Importer.getToContext().getTypeOfType(*ToUnderlyingTypeOrErr,
T->getKind());
}
ExpectedType ASTNodeImporter::VisitUsingType(const UsingType *T) {
Expected<UsingShadowDecl *> FoundOrErr = import(T->getFoundDecl());
if (!FoundOrErr)
return FoundOrErr.takeError();
Expected<QualType> UnderlyingOrErr = import(T->getUnderlyingType());
if (!UnderlyingOrErr)
return UnderlyingOrErr.takeError();
return Importer.getToContext().getUsingType(*FoundOrErr, *UnderlyingOrErr);
}
ExpectedType ASTNodeImporter::VisitDecltypeType(const DecltypeType *T) {
// FIXME: Make sure that the "to" context supports C++0x!
ExpectedExpr ToExprOrErr = import(T->getUnderlyingExpr());
if (!ToExprOrErr)
return ToExprOrErr.takeError();
ExpectedType ToUnderlyingTypeOrErr = import(T->getUnderlyingType());
if (!ToUnderlyingTypeOrErr)
return ToUnderlyingTypeOrErr.takeError();
return Importer.getToContext().getDecltypeType(
*ToExprOrErr, *ToUnderlyingTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitUnaryTransformType(const UnaryTransformType *T) {
ExpectedType ToBaseTypeOrErr = import(T->getBaseType());
if (!ToBaseTypeOrErr)
return ToBaseTypeOrErr.takeError();
ExpectedType ToUnderlyingTypeOrErr = import(T->getUnderlyingType());
if (!ToUnderlyingTypeOrErr)
return ToUnderlyingTypeOrErr.takeError();
return Importer.getToContext().getUnaryTransformType(
*ToBaseTypeOrErr, *ToUnderlyingTypeOrErr, T->getUTTKind());
}
ExpectedType ASTNodeImporter::VisitAutoType(const AutoType *T) {
// FIXME: Make sure that the "to" context supports C++11!
ExpectedType ToDeducedTypeOrErr = import(T->getDeducedType());
if (!ToDeducedTypeOrErr)
return ToDeducedTypeOrErr.takeError();
ExpectedDecl ToTypeConstraintConcept = import(T->getTypeConstraintConcept());
if (!ToTypeConstraintConcept)
return ToTypeConstraintConcept.takeError();
SmallVector<TemplateArgument, 2> ToTemplateArgs;
if (Error Err = ImportTemplateArguments(T->getTypeConstraintArguments(),
ToTemplateArgs))
return std::move(Err);
return Importer.getToContext().getAutoType(
*ToDeducedTypeOrErr, T->getKeyword(), /*IsDependent*/false,
/*IsPack=*/false, cast_or_null<ConceptDecl>(*ToTypeConstraintConcept),
ToTemplateArgs);
}
ExpectedType ASTNodeImporter::VisitDeducedTemplateSpecializationType(
const DeducedTemplateSpecializationType *T) {
// FIXME: Make sure that the "to" context supports C++17!
Expected<TemplateName> ToTemplateNameOrErr = import(T->getTemplateName());
if (!ToTemplateNameOrErr)
return ToTemplateNameOrErr.takeError();
ExpectedType ToDeducedTypeOrErr = import(T->getDeducedType());
if (!ToDeducedTypeOrErr)
return ToDeducedTypeOrErr.takeError();
return Importer.getToContext().getDeducedTemplateSpecializationType(
*ToTemplateNameOrErr, *ToDeducedTypeOrErr, T->isDependentType());
}
ExpectedType ASTNodeImporter::VisitInjectedClassNameType(
const InjectedClassNameType *T) {
Expected<CXXRecordDecl *> ToDeclOrErr = import(T->getDecl());
if (!ToDeclOrErr)
return ToDeclOrErr.takeError();
// The InjectedClassNameType is created in VisitRecordDecl when the
// T->getDecl() is imported. Here we can return the existing type.
const Type *Ty = (*ToDeclOrErr)->getTypeForDecl();
assert(Ty && isa<InjectedClassNameType>(Ty));
return QualType(Ty, 0);
}
ExpectedType ASTNodeImporter::VisitRecordType(const RecordType *T) {
Expected<RecordDecl *> ToDeclOrErr = import(T->getDecl());
if (!ToDeclOrErr)
return ToDeclOrErr.takeError();
return Importer.getToContext().getTagDeclType(*ToDeclOrErr);
}
ExpectedType ASTNodeImporter::VisitEnumType(const EnumType *T) {
Expected<EnumDecl *> ToDeclOrErr = import(T->getDecl());
if (!ToDeclOrErr)
return ToDeclOrErr.takeError();
return Importer.getToContext().getTagDeclType(*ToDeclOrErr);
}
ExpectedType ASTNodeImporter::VisitAttributedType(const AttributedType *T) {
ExpectedType ToModifiedTypeOrErr = import(T->getModifiedType());
if (!ToModifiedTypeOrErr)
return ToModifiedTypeOrErr.takeError();
ExpectedType ToEquivalentTypeOrErr = import(T->getEquivalentType());
if (!ToEquivalentTypeOrErr)
return ToEquivalentTypeOrErr.takeError();
return Importer.getToContext().getAttributedType(T->getAttrKind(),
*ToModifiedTypeOrErr, *ToEquivalentTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitCountAttributedType(const CountAttributedType *T) {
ExpectedType ToWrappedTypeOrErr = import(T->desugar());
if (!ToWrappedTypeOrErr)
return ToWrappedTypeOrErr.takeError();
Error Err = Error::success();
Expr *CountExpr = importChecked(Err, T->getCountExpr());
SmallVector<TypeCoupledDeclRefInfo, 1> CoupledDecls;
for (auto TI : T->dependent_decls()) {
Expected<ValueDecl *> ToDeclOrErr = import(TI.getDecl());
if (!ToDeclOrErr)
return ToDeclOrErr.takeError();
CoupledDecls.emplace_back(*ToDeclOrErr, TI.isDeref());
}
return Importer.getToContext().getCountAttributedType(
*ToWrappedTypeOrErr, CountExpr, T->isCountInBytes(), T->isOrNull(),
ArrayRef(CoupledDecls.data(), CoupledDecls.size()));
}
ExpectedType ASTNodeImporter::VisitTemplateTypeParmType(
const TemplateTypeParmType *T) {
Expected<TemplateTypeParmDecl *> ToDeclOrErr = import(T->getDecl());
if (!ToDeclOrErr)
return ToDeclOrErr.takeError();
return Importer.getToContext().getTemplateTypeParmType(
T->getDepth(), T->getIndex(), T->isParameterPack(), *ToDeclOrErr);
}
ExpectedType ASTNodeImporter::VisitSubstTemplateTypeParmType(
const SubstTemplateTypeParmType *T) {
Expected<Decl *> ReplacedOrErr = import(T->getAssociatedDecl());
if (!ReplacedOrErr)
return ReplacedOrErr.takeError();
ExpectedType ToReplacementTypeOrErr = import(T->getReplacementType());
if (!ToReplacementTypeOrErr)
return ToReplacementTypeOrErr.takeError();
return Importer.getToContext().getSubstTemplateTypeParmType(
*ToReplacementTypeOrErr, *ReplacedOrErr, T->getIndex(),
T->getPackIndex());
}
ExpectedType ASTNodeImporter::VisitSubstTemplateTypeParmPackType(
const SubstTemplateTypeParmPackType *T) {
Expected<Decl *> ReplacedOrErr = import(T->getAssociatedDecl());
if (!ReplacedOrErr)
return ReplacedOrErr.takeError();
Expected<TemplateArgument> ToArgumentPack = import(T->getArgumentPack());
if (!ToArgumentPack)
return ToArgumentPack.takeError();
return Importer.getToContext().getSubstTemplateTypeParmPackType(
*ReplacedOrErr, T->getIndex(), T->getFinal(), *ToArgumentPack);
}
ExpectedType ASTNodeImporter::VisitTemplateSpecializationType(
const TemplateSpecializationType *T) {
auto ToTemplateOrErr = import(T->getTemplateName());
if (!ToTemplateOrErr)
return ToTemplateOrErr.takeError();
SmallVector<TemplateArgument, 2> ToTemplateArgs;
if (Error Err =
ImportTemplateArguments(T->template_arguments(), ToTemplateArgs))
return std::move(Err);
QualType ToCanonType;
if (!T->isCanonicalUnqualified()) {
QualType FromCanonType
= Importer.getFromContext().getCanonicalType(QualType(T, 0));
if (ExpectedType TyOrErr = import(FromCanonType))
ToCanonType = *TyOrErr;
else
return TyOrErr.takeError();
}
return Importer.getToContext().getTemplateSpecializationType(*ToTemplateOrErr,
ToTemplateArgs,
ToCanonType);
}
ExpectedType ASTNodeImporter::VisitElaboratedType(const ElaboratedType *T) {
// Note: the qualifier in an ElaboratedType is optional.
auto ToQualifierOrErr = import(T->getQualifier());
if (!ToQualifierOrErr)
return ToQualifierOrErr.takeError();
ExpectedType ToNamedTypeOrErr = import(T->getNamedType());
if (!ToNamedTypeOrErr)
return ToNamedTypeOrErr.takeError();
Expected<TagDecl *> ToOwnedTagDeclOrErr = import(T->getOwnedTagDecl());
if (!ToOwnedTagDeclOrErr)
return ToOwnedTagDeclOrErr.takeError();
return Importer.getToContext().getElaboratedType(T->getKeyword(),
*ToQualifierOrErr,
*ToNamedTypeOrErr,
*ToOwnedTagDeclOrErr);
}
ExpectedType
ASTNodeImporter::VisitPackExpansionType(const PackExpansionType *T) {
ExpectedType ToPatternOrErr = import(T->getPattern());
if (!ToPatternOrErr)
return ToPatternOrErr.takeError();
return Importer.getToContext().getPackExpansionType(*ToPatternOrErr,
T->getNumExpansions(),
/*ExpactPack=*/false);
}
ExpectedType ASTNodeImporter::VisitDependentTemplateSpecializationType(
const DependentTemplateSpecializationType *T) {
auto ToQualifierOrErr = import(T->getQualifier());
if (!ToQualifierOrErr)
return ToQualifierOrErr.takeError();
IdentifierInfo *ToName = Importer.Import(T->getIdentifier());
SmallVector<TemplateArgument, 2> ToPack;
ToPack.reserve(T->template_arguments().size());
if (Error Err = ImportTemplateArguments(T->template_arguments(), ToPack))
return std::move(Err);
return Importer.getToContext().getDependentTemplateSpecializationType(
T->getKeyword(), *ToQualifierOrErr, ToName, ToPack);
}
ExpectedType
ASTNodeImporter::VisitDependentNameType(const DependentNameType *T) {
auto ToQualifierOrErr = import(T->getQualifier());
if (!ToQualifierOrErr)
return ToQualifierOrErr.takeError();
IdentifierInfo *Name = Importer.Import(T->getIdentifier());
QualType Canon;
if (T != T->getCanonicalTypeInternal().getTypePtr()) {
if (ExpectedType TyOrErr = import(T->getCanonicalTypeInternal()))
Canon = (*TyOrErr).getCanonicalType();
else
return TyOrErr.takeError();
}
return Importer.getToContext().getDependentNameType(T->getKeyword(),
*ToQualifierOrErr,
Name, Canon);
}
ExpectedType
ASTNodeImporter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
Expected<ObjCInterfaceDecl *> ToDeclOrErr = import(T->getDecl());
if (!ToDeclOrErr)
return ToDeclOrErr.takeError();
return Importer.getToContext().getObjCInterfaceType(*ToDeclOrErr);
}
ExpectedType ASTNodeImporter::VisitObjCObjectType(const ObjCObjectType *T) {
ExpectedType ToBaseTypeOrErr = import(T->getBaseType());
if (!ToBaseTypeOrErr)
return ToBaseTypeOrErr.takeError();
SmallVector<QualType, 4> TypeArgs;
for (auto TypeArg : T->getTypeArgsAsWritten()) {
if (ExpectedType TyOrErr = import(TypeArg))
TypeArgs.push_back(*TyOrErr);
else
return TyOrErr.takeError();
}
SmallVector<ObjCProtocolDecl *, 4> Protocols;
for (auto *P : T->quals()) {
if (Expected<ObjCProtocolDecl *> ProtocolOrErr = import(P))
Protocols.push_back(*ProtocolOrErr);
else
return ProtocolOrErr.takeError();
}
return Importer.getToContext().getObjCObjectType(*ToBaseTypeOrErr, TypeArgs,
Protocols,
T->isKindOfTypeAsWritten());
}
ExpectedType
ASTNodeImporter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
ExpectedType ToPointeeTypeOrErr = import(T->getPointeeType());
if (!ToPointeeTypeOrErr)
return ToPointeeTypeOrErr.takeError();
return Importer.getToContext().getObjCObjectPointerType(*ToPointeeTypeOrErr);
}
ExpectedType
ASTNodeImporter::VisitMacroQualifiedType(const MacroQualifiedType *T) {
ExpectedType ToUnderlyingTypeOrErr = import(T->getUnderlyingType());
if (!ToUnderlyingTypeOrErr)
return ToUnderlyingTypeOrErr.takeError();
IdentifierInfo *ToIdentifier = Importer.Import(T->getMacroIdentifier());
return Importer.getToContext().getMacroQualifiedType(*ToUnderlyingTypeOrErr,
ToIdentifier);
}
ExpectedType clang::ASTNodeImporter::VisitAdjustedType(const AdjustedType *T) {
Error Err = Error::success();
QualType ToOriginalType = importChecked(Err, T->getOriginalType());
QualType ToAdjustedType = importChecked(Err, T->getAdjustedType());
if (Err)
return std::move(Err);
return Importer.getToContext().getAdjustedType(ToOriginalType,
ToAdjustedType);
}
ExpectedType clang::ASTNodeImporter::VisitBitIntType(const BitIntType *T) {
return Importer.getToContext().getBitIntType(T->isUnsigned(),
T->getNumBits());
}
ExpectedType clang::ASTNodeImporter::VisitBTFTagAttributedType(
const clang::BTFTagAttributedType *T) {
Error Err = Error::success();
const BTFTypeTagAttr *ToBTFAttr = importChecked(Err, T->getAttr());
QualType ToWrappedType = importChecked(Err, T->getWrappedType());
if (Err)
return std::move(Err);
return Importer.getToContext().getBTFTagAttributedType(ToBTFAttr,
ToWrappedType);
}
ExpectedType clang::ASTNodeImporter::VisitConstantMatrixType(
const clang::ConstantMatrixType *T) {
ExpectedType ToElementTypeOrErr = import(T->getElementType());
if (!ToElementTypeOrErr)
return ToElementTypeOrErr.takeError();
return Importer.getToContext().getConstantMatrixType(
*ToElementTypeOrErr, T->getNumRows(), T->getNumColumns());
}
ExpectedType clang::ASTNodeImporter::VisitDependentAddressSpaceType(
const clang::DependentAddressSpaceType *T) {
Error Err = Error::success();
QualType ToPointeeType = importChecked(Err, T->getPointeeType());
Expr *ToAddrSpaceExpr = importChecked(Err, T->getAddrSpaceExpr());
SourceLocation ToAttrLoc = importChecked(Err, T->getAttributeLoc());
if (Err)
return std::move(Err);
return Importer.getToContext().getDependentAddressSpaceType(
ToPointeeType, ToAddrSpaceExpr, ToAttrLoc);
}
ExpectedType clang::ASTNodeImporter::VisitDependentBitIntType(
const clang::DependentBitIntType *T) {
ExpectedExpr ToNumBitsExprOrErr = import(T->getNumBitsExpr());
if (!ToNumBitsExprOrErr)
return ToNumBitsExprOrErr.takeError();
return Importer.getToContext().getDependentBitIntType(T->isUnsigned(),
*ToNumBitsExprOrErr);
}
ExpectedType clang::ASTNodeImporter::VisitDependentSizedMatrixType(
const clang::DependentSizedMatrixType *T) {
Error Err = Error::success();
QualType ToElementType = importChecked(Err, T->getElementType());
Expr *ToRowExpr = importChecked(Err, T->getRowExpr());
Expr *ToColumnExpr = importChecked(Err, T->getColumnExpr());
SourceLocation ToAttrLoc = importChecked(Err, T->getAttributeLoc());
if (Err)
return std::move(Err);
return Importer.getToContext().getDependentSizedMatrixType(
ToElementType, ToRowExpr, ToColumnExpr, ToAttrLoc);
}
ExpectedType clang::ASTNodeImporter::VisitDependentVectorType(
const clang::DependentVectorType *T) {
Error Err = Error::success();
QualType ToElementType = importChecked(Err, T->getElementType());
Expr *ToSizeExpr = importChecked(Err, T->getSizeExpr());
SourceLocation ToAttrLoc = importChecked(Err, T->getAttributeLoc());
if (Err)
return std::move(Err);
return Importer.getToContext().getDependentVectorType(
ToElementType, ToSizeExpr, ToAttrLoc, T->getVectorKind());
}
ExpectedType clang::ASTNodeImporter::VisitObjCTypeParamType(
const clang::ObjCTypeParamType *T) {
Expected<ObjCTypeParamDecl *> ToDeclOrErr = import(T->getDecl());
if (!ToDeclOrErr)
return ToDeclOrErr.takeError();
SmallVector<ObjCProtocolDecl *, 4> ToProtocols;
for (ObjCProtocolDecl *FromProtocol : T->getProtocols()) {
Expected<ObjCProtocolDecl *> ToProtocolOrErr = import(FromProtocol);
if (!ToProtocolOrErr)
return ToProtocolOrErr.takeError();
ToProtocols.push_back(*ToProtocolOrErr);
}
return Importer.getToContext().getObjCTypeParamType(*ToDeclOrErr,
ToProtocols);
}
ExpectedType clang::ASTNodeImporter::VisitPipeType(const clang::PipeType *T) {
ExpectedType ToElementTypeOrErr = import(T->getElementType());
if (!ToElementTypeOrErr)
return ToElementTypeOrErr.takeError();
ASTContext &ToCtx = Importer.getToContext();
if (T->isReadOnly())
return ToCtx.getReadPipeType(*ToElementTypeOrErr);
else
return ToCtx.getWritePipeType(*ToElementTypeOrErr);
}
//----------------------------------------------------------------------------
// Import Declarations
//----------------------------------------------------------------------------
Error ASTNodeImporter::ImportDeclParts(
NamedDecl *D, DeclContext *&DC, DeclContext *&LexicalDC,
DeclarationName &Name, NamedDecl *&ToD, SourceLocation &Loc) {
// Check if RecordDecl is in FunctionDecl parameters to avoid infinite loop.
// example: int struct_in_proto(struct data_t{int a;int b;} *d);
// FIXME: We could support these constructs by importing a different type of
// this parameter and by importing the original type of the parameter only
// after the FunctionDecl is created. See
// VisitFunctionDecl::UsedDifferentProtoType.
DeclContext *OrigDC = D->getDeclContext();
FunctionDecl *FunDecl;
if (isa<RecordDecl>(D) && (FunDecl = dyn_cast<FunctionDecl>(OrigDC)) &&
FunDecl->hasBody()) {
auto getLeafPointeeType = [](const Type *T) {
while (T->isPointerType() || T->isArrayType()) {
T = T->getPointeeOrArrayElementType();
}
return T;
};
for (const ParmVarDecl *P : FunDecl->parameters()) {
const Type *LeafT =
getLeafPointeeType(P->getType().getCanonicalType().getTypePtr());
auto *RT = dyn_cast<RecordType>(LeafT);
if (RT && RT->getDecl() == D) {
Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node)
<< D->getDeclKindName();
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
}
}
}
// Import the context of this declaration.
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return Err;
// Import the name of this declaration.
if (Error Err = importInto(Name, D->getDeclName()))
return Err;
// Import the location of this declaration.
if (Error Err = importInto(Loc, D->getLocation()))
return Err;
ToD = cast_or_null<NamedDecl>(Importer.GetAlreadyImportedOrNull(D));
if (ToD)
if (Error Err = ASTNodeImporter(*this).ImportDefinitionIfNeeded(D, ToD))
return Err;
return Error::success();
}
Error ASTNodeImporter::ImportDeclParts(NamedDecl *D, DeclarationName &Name,
NamedDecl *&ToD, SourceLocation &Loc) {
// Import the name of this declaration.
if (Error Err = importInto(Name, D->getDeclName()))
return Err;
// Import the location of this declaration.
if (Error Err = importInto(Loc, D->getLocation()))
return Err;
ToD = cast_or_null<NamedDecl>(Importer.GetAlreadyImportedOrNull(D));
if (ToD)
if (Error Err = ASTNodeImporter(*this).ImportDefinitionIfNeeded(D, ToD))
return Err;
return Error::success();
}
Error ASTNodeImporter::ImportDefinitionIfNeeded(Decl *FromD, Decl *ToD) {
if (!FromD)
return Error::success();
if (!ToD)
if (Error Err = importInto(ToD, FromD))
return Err;
if (RecordDecl *FromRecord = dyn_cast<RecordDecl>(FromD)) {
if (RecordDecl *ToRecord = cast<RecordDecl>(ToD)) {
if (FromRecord->getDefinition() && FromRecord->isCompleteDefinition() &&
!ToRecord->getDefinition()) {
if (Error Err = ImportDefinition(FromRecord, ToRecord))
return Err;
}
}
return Error::success();
}
if (EnumDecl *FromEnum = dyn_cast<EnumDecl>(FromD)) {
if (EnumDecl *ToEnum = cast<EnumDecl>(ToD)) {
if (FromEnum->getDefinition() && !ToEnum->getDefinition()) {
if (Error Err = ImportDefinition(FromEnum, ToEnum))
return Err;
}
}
return Error::success();
}
return Error::success();
}
Error
ASTNodeImporter::ImportDeclarationNameLoc(
const DeclarationNameInfo &From, DeclarationNameInfo& To) {
// NOTE: To.Name and To.Loc are already imported.
// We only have to import To.LocInfo.
switch (To.getName().getNameKind()) {
case DeclarationName::Identifier:
case DeclarationName::ObjCZeroArgSelector:
case DeclarationName::ObjCOneArgSelector:
case DeclarationName::ObjCMultiArgSelector:
case DeclarationName::CXXUsingDirective:
case DeclarationName::CXXDeductionGuideName:
return Error::success();
case DeclarationName::CXXOperatorName: {
if (auto ToRangeOrErr = import(From.getCXXOperatorNameRange()))
To.setCXXOperatorNameRange(*ToRangeOrErr);
else
return ToRangeOrErr.takeError();
return Error::success();
}
case DeclarationName::CXXLiteralOperatorName: {
if (ExpectedSLoc LocOrErr = import(From.getCXXLiteralOperatorNameLoc()))
To.setCXXLiteralOperatorNameLoc(*LocOrErr);
else
return LocOrErr.takeError();
return Error::success();
}
case DeclarationName::CXXConstructorName:
case DeclarationName::CXXDestructorName:
case DeclarationName::CXXConversionFunctionName: {
if (auto ToTInfoOrErr = import(From.getNamedTypeInfo()))
To.setNamedTypeInfo(*ToTInfoOrErr);
else
return ToTInfoOrErr.takeError();
return Error::success();
}
}
llvm_unreachable("Unknown name kind.");
}
Error
ASTNodeImporter::ImportDeclContext(DeclContext *FromDC, bool ForceImport) {
if (Importer.isMinimalImport() && !ForceImport) {
auto ToDCOrErr = Importer.ImportContext(FromDC);
return ToDCOrErr.takeError();
}
// We use strict error handling in case of records and enums, but not
// with e.g. namespaces.
//
// FIXME Clients of the ASTImporter should be able to choose an
// appropriate error handling strategy for their needs. For instance,
// they may not want to mark an entire namespace as erroneous merely
// because there is an ODR error with two typedefs. As another example,
// the client may allow EnumConstantDecls with same names but with
// different values in two distinct translation units.
ChildErrorHandlingStrategy HandleChildErrors(FromDC);
auto MightNeedReordering = [](const Decl *D) {
return isa<FieldDecl>(D) || isa<IndirectFieldDecl>(D) || isa<FriendDecl>(D);
};
// Import everything that might need reordering first.
Error ChildErrors = Error::success();
for (auto *From : FromDC->decls()) {
if (!MightNeedReordering(From))
continue;
ExpectedDecl ImportedOrErr = import(From);
// If we are in the process of ImportDefinition(...) for a RecordDecl we
// want to make sure that we are also completing each FieldDecl. There
// are currently cases where this does not happen and this is correctness
// fix since operations such as code generation will expect this to be so.
if (!ImportedOrErr) {
HandleChildErrors.handleChildImportResult(ChildErrors,
ImportedOrErr.takeError());
continue;
}
FieldDecl *FieldFrom = dyn_cast_or_null<FieldDecl>(From);
Decl *ImportedDecl = *ImportedOrErr;
FieldDecl *FieldTo = dyn_cast_or_null<FieldDecl>(ImportedDecl);
if (FieldFrom && FieldTo) {
Error Err = ImportFieldDeclDefinition(FieldFrom, FieldTo);
HandleChildErrors.handleChildImportResult(ChildErrors, std::move(Err));
}
}
// We reorder declarations in RecordDecls because they may have another order
// in the "to" context than they have in the "from" context. This may happen
// e.g when we import a class like this:
// struct declToImport {
// int a = c + b;
// int b = 1;
// int c = 2;
// };
// During the import of `a` we import first the dependencies in sequence,
// thus the order would be `c`, `b`, `a`. We will get the normal order by
// first removing the already imported members and then adding them in the
// order as they appear in the "from" context.
//
// Keeping field order is vital because it determines structure layout.
//
// Here and below, we cannot call field_begin() method and its callers on
// ToDC if it has an external storage. Calling field_begin() will
// automatically load all the fields by calling
// LoadFieldsFromExternalStorage(). LoadFieldsFromExternalStorage() would
// call ASTImporter::Import(). This is because the ExternalASTSource
// interface in LLDB is implemented by the means of the ASTImporter. However,
// calling an import at this point would result in an uncontrolled import, we
// must avoid that.
auto ToDCOrErr = Importer.ImportContext(FromDC);
if (!ToDCOrErr) {
consumeError(std::move(ChildErrors));
return ToDCOrErr.takeError();
}
if (const auto *FromRD = dyn_cast<RecordDecl>(FromDC)) {
DeclContext *ToDC = *ToDCOrErr;
// Remove all declarations, which may be in wrong order in the
// lexical DeclContext and then add them in the proper order.
for (auto *D : FromRD->decls()) {
if (!MightNeedReordering(D))
continue;
assert(D && "DC contains a null decl");
if (Decl *ToD = Importer.GetAlreadyImportedOrNull(D)) {
// Remove only the decls which we successfully imported.
assert(ToDC == ToD->getLexicalDeclContext() && ToDC->containsDecl(ToD));
// Remove the decl from its wrong place in the linked list.
ToDC->removeDecl(ToD);
// Add the decl to the end of the linked list.
// This time it will be at the proper place because the enclosing for
// loop iterates in the original (good) order of the decls.
ToDC->addDeclInternal(ToD);
}
}
}
// Import everything else.
for (auto *From : FromDC->decls()) {
if (MightNeedReordering(From))
continue;
ExpectedDecl ImportedOrErr = import(From);
if (!ImportedOrErr)
HandleChildErrors.handleChildImportResult(ChildErrors,
ImportedOrErr.takeError());
}
return ChildErrors;
}
Error ASTNodeImporter::ImportFieldDeclDefinition(const FieldDecl *From,
const FieldDecl *To) {
RecordDecl *FromRecordDecl = nullptr;
RecordDecl *ToRecordDecl = nullptr;
// If we have a field that is an ArrayType we need to check if the array
// element is a RecordDecl and if so we need to import the definition.
QualType FromType = From->getType();
QualType ToType = To->getType();
if (FromType->isArrayType()) {
// getBaseElementTypeUnsafe(...) handles multi-dimensonal arrays for us.
FromRecordDecl = FromType->getBaseElementTypeUnsafe()->getAsRecordDecl();
ToRecordDecl = ToType->getBaseElementTypeUnsafe()->getAsRecordDecl();
}
if (!FromRecordDecl || !ToRecordDecl) {
const RecordType *RecordFrom = FromType->getAs<RecordType>();
const RecordType *RecordTo = ToType->getAs<RecordType>();
if (RecordFrom && RecordTo) {
FromRecordDecl = RecordFrom->getDecl();
ToRecordDecl = RecordTo->getDecl();
}
}
if (FromRecordDecl && ToRecordDecl) {
if (FromRecordDecl->isCompleteDefinition() &&
!ToRecordDecl->isCompleteDefinition())
return ImportDefinition(FromRecordDecl, ToRecordDecl);
}
return Error::success();
}
Error ASTNodeImporter::ImportDeclContext(
Decl *FromD, DeclContext *&ToDC, DeclContext *&ToLexicalDC) {
auto ToDCOrErr = Importer.ImportContext(FromD->getDeclContext());
if (!ToDCOrErr)
return ToDCOrErr.takeError();
ToDC = *ToDCOrErr;
if (FromD->getDeclContext() != FromD->getLexicalDeclContext()) {
auto ToLexicalDCOrErr = Importer.ImportContext(
FromD->getLexicalDeclContext());
if (!ToLexicalDCOrErr)
return ToLexicalDCOrErr.takeError();
ToLexicalDC = *ToLexicalDCOrErr;
} else
ToLexicalDC = ToDC;
return Error::success();
}
Error ASTNodeImporter::ImportImplicitMethods(
const CXXRecordDecl *From, CXXRecordDecl *To) {
assert(From->isCompleteDefinition() && To->getDefinition() == To &&
"Import implicit methods to or from non-definition");
for (CXXMethodDecl *FromM : From->methods())
if (FromM->isImplicit()) {
Expected<CXXMethodDecl *> ToMOrErr = import(FromM);
if (!ToMOrErr)
return ToMOrErr.takeError();
}
return Error::success();
}
static Error setTypedefNameForAnonDecl(TagDecl *From, TagDecl *To,
ASTImporter &Importer) {
if (TypedefNameDecl *FromTypedef = From->getTypedefNameForAnonDecl()) {
if (ExpectedDecl ToTypedefOrErr = Importer.Import(FromTypedef))
To->setTypedefNameForAnonDecl(cast<TypedefNameDecl>(*ToTypedefOrErr));
else
return ToTypedefOrErr.takeError();
}
return Error::success();
}
Error ASTNodeImporter::ImportDefinition(
RecordDecl *From, RecordDecl *To, ImportDefinitionKind Kind) {
auto DefinitionCompleter = [To]() {
// There are cases in LLDB when we first import a class without its
// members. The class will have DefinitionData, but no members. Then,
// importDefinition is called from LLDB, which tries to get the members, so
// when we get here, the class already has the DefinitionData set, so we
// must unset the CompleteDefinition here to be able to complete again the
// definition.
To->setCompleteDefinition(false);
To->completeDefinition();
};
if (To->getDefinition() || To->isBeingDefined()) {
if (Kind == IDK_Everything ||
// In case of lambdas, the class already has a definition ptr set, but
// the contained decls are not imported yet. Also, isBeingDefined was
// set in CXXRecordDecl::CreateLambda. We must import the contained
// decls here and finish the definition.
(To->isLambda() && shouldForceImportDeclContext(Kind))) {
if (To->isLambda()) {
auto *FromCXXRD = cast<CXXRecordDecl>(From);
SmallVector<LambdaCapture, 8> ToCaptures;
ToCaptures.reserve(FromCXXRD->capture_size());
for (const auto &FromCapture : FromCXXRD->captures()) {
if (auto ToCaptureOrErr = import(FromCapture))
ToCaptures.push_back(*ToCaptureOrErr);
else
return ToCaptureOrErr.takeError();
}
cast<CXXRecordDecl>(To)->setCaptures(Importer.getToContext(),
ToCaptures);
}
Error Result = ImportDeclContext(From, /*ForceImport=*/true);
// Finish the definition of the lambda, set isBeingDefined to false.
if (To->isLambda())
DefinitionCompleter();
return Result;
}
return Error::success();
}
To->startDefinition();
// Set the definition to complete even if it is really not complete during
// import. Some AST constructs (expressions) require the record layout
// to be calculated (see 'clang::computeDependence') at the time they are
// constructed. Import of such AST node is possible during import of the
// same record, there is no way to have a completely defined record (all
// fields imported) at that time without multiple AST import passes.
if (!Importer.isMinimalImport())
To->setCompleteDefinition(true);
// Complete the definition even if error is returned.
// The RecordDecl may be already part of the AST so it is better to
// have it in complete state even if something is wrong with it.
auto DefinitionCompleterScopeExit =
llvm::make_scope_exit(DefinitionCompleter);
if (Error Err = setTypedefNameForAnonDecl(From, To, Importer))
return Err;
// Add base classes.
auto *ToCXX = dyn_cast<CXXRecordDecl>(To);
auto *FromCXX = dyn_cast<CXXRecordDecl>(From);
if (ToCXX && FromCXX && ToCXX->dataPtr() && FromCXX->dataPtr()) {
struct CXXRecordDecl::DefinitionData &ToData = ToCXX->data();
struct CXXRecordDecl::DefinitionData &FromData = FromCXX->data();
#define FIELD(Name, Width, Merge) \
ToData.Name = FromData.Name;
#include "clang/AST/CXXRecordDeclDefinitionBits.def"
// Copy over the data stored in RecordDeclBits
ToCXX->setArgPassingRestrictions(FromCXX->getArgPassingRestrictions());
SmallVector<CXXBaseSpecifier *, 4> Bases;
for (const auto &Base1 : FromCXX->bases()) {
ExpectedType TyOrErr = import(Base1.getType());
if (!TyOrErr)
return TyOrErr.takeError();
SourceLocation EllipsisLoc;
if (Base1.isPackExpansion()) {
if (ExpectedSLoc LocOrErr = import(Base1.getEllipsisLoc()))
EllipsisLoc = *LocOrErr;
else
return LocOrErr.takeError();
}
// Ensure that we have a definition for the base.
if (Error Err =
ImportDefinitionIfNeeded(Base1.getType()->getAsCXXRecordDecl()))
return Err;
auto RangeOrErr = import(Base1.getSourceRange());
if (!RangeOrErr)
return RangeOrErr.takeError();
auto TSIOrErr = import(Base1.getTypeSourceInfo());
if (!TSIOrErr)
return TSIOrErr.takeError();
Bases.push_back(
new (Importer.getToContext()) CXXBaseSpecifier(
*RangeOrErr,
Base1.isVirtual(),
Base1.isBaseOfClass(),
Base1.getAccessSpecifierAsWritten(),
*TSIOrErr,
EllipsisLoc));
}
if (!Bases.empty())
ToCXX->setBases(Bases.data(), Bases.size());
}
if (shouldForceImportDeclContext(Kind)) {
if (Error Err = ImportDeclContext(From, /*ForceImport=*/true))
return Err;
}
return Error::success();
}
Error ASTNodeImporter::ImportInitializer(VarDecl *From, VarDecl *To) {
if (To->getAnyInitializer())
return Error::success();
Expr *FromInit = From->getInit();
if (!FromInit)
return Error::success();
ExpectedExpr ToInitOrErr = import(FromInit);
if (!ToInitOrErr)
return ToInitOrErr.takeError();
To->setInit(*ToInitOrErr);
if (EvaluatedStmt *FromEval = From->getEvaluatedStmt()) {
EvaluatedStmt *ToEval = To->ensureEvaluatedStmt();
ToEval->HasConstantInitialization = FromEval->HasConstantInitialization;
ToEval->HasConstantDestruction = FromEval->HasConstantDestruction;
// FIXME: Also import the initializer value.
}
// FIXME: Other bits to merge?
return Error::success();
}
Error ASTNodeImporter::ImportDefinition(
EnumDecl *From, EnumDecl *To, ImportDefinitionKind Kind) {
if (To->getDefinition() || To->isBeingDefined()) {
if (Kind == IDK_Everything)
return ImportDeclContext(From, /*ForceImport=*/true);
return Error::success();
}
To->startDefinition();
if (Error Err = setTypedefNameForAnonDecl(From, To, Importer))
return Err;
ExpectedType ToTypeOrErr =
import(Importer.getFromContext().getTypeDeclType(From));
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedType ToPromotionTypeOrErr = import(From->getPromotionType());
if (!ToPromotionTypeOrErr)
return ToPromotionTypeOrErr.takeError();
if (shouldForceImportDeclContext(Kind))
if (Error Err = ImportDeclContext(From, /*ForceImport=*/true))
return Err;
// FIXME: we might need to merge the number of positive or negative bits
// if the enumerator lists don't match.
To->completeDefinition(*ToTypeOrErr, *ToPromotionTypeOrErr,
From->getNumPositiveBits(),
From->getNumNegativeBits());
return Error::success();
}
Error ASTNodeImporter::ImportTemplateArguments(
ArrayRef<TemplateArgument> FromArgs,
SmallVectorImpl<TemplateArgument> &ToArgs) {
for (const auto &Arg : FromArgs) {
if (auto ToOrErr = import(Arg))
ToArgs.push_back(*ToOrErr);
else
return ToOrErr.takeError();
}
return Error::success();
}
// FIXME: Do not forget to remove this and use only 'import'.
Expected<TemplateArgument>
ASTNodeImporter::ImportTemplateArgument(const TemplateArgument &From) {
return import(From);
}
template <typename InContainerTy>
Error ASTNodeImporter::ImportTemplateArgumentListInfo(
const InContainerTy &Container, TemplateArgumentListInfo &ToTAInfo) {
for (const auto &FromLoc : Container) {
if (auto ToLocOrErr = import(FromLoc))
ToTAInfo.addArgument(*ToLocOrErr);
else
return ToLocOrErr.takeError();
}
return Error::success();
}
static StructuralEquivalenceKind
getStructuralEquivalenceKind(const ASTImporter &Importer) {
return Importer.isMinimalImport() ? StructuralEquivalenceKind::Minimal
: StructuralEquivalenceKind::Default;
}
bool ASTNodeImporter::IsStructuralMatch(Decl *From, Decl *To, bool Complain,
bool IgnoreTemplateParmDepth) {
// Eliminate a potential failure point where we attempt to re-import
// something we're trying to import while completing ToRecord.
Decl *ToOrigin = Importer.GetOriginalDecl(To);
if (ToOrigin) {
To = ToOrigin;
}
StructuralEquivalenceContext Ctx(
Importer.getFromContext(), Importer.getToContext(),
Importer.getNonEquivalentDecls(), getStructuralEquivalenceKind(Importer),
/*StrictTypeSpelling=*/false, Complain, /*ErrorOnTagTypeMismatch=*/false,
IgnoreTemplateParmDepth);
return Ctx.IsEquivalent(From, To);
}
ExpectedDecl ASTNodeImporter::VisitDecl(Decl *D) {
Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node)
<< D->getDeclKindName();
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
}
ExpectedDecl ASTNodeImporter::VisitImportDecl(ImportDecl *D) {
Importer.FromDiag(D->getLocation(), diag::err_unsupported_ast_node)
<< D->getDeclKindName();
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
}
ExpectedDecl ASTNodeImporter::VisitEmptyDecl(EmptyDecl *D) {
// Import the context of this declaration.
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
// Import the location of this declaration.
ExpectedSLoc LocOrErr = import(D->getLocation());
if (!LocOrErr)
return LocOrErr.takeError();
EmptyDecl *ToD;
if (GetImportedOrCreateDecl(ToD, D, Importer.getToContext(), DC, *LocOrErr))
return ToD;
ToD->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToD);
return ToD;
}
ExpectedDecl ASTNodeImporter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
TranslationUnitDecl *ToD =
Importer.getToContext().getTranslationUnitDecl();
Importer.MapImported(D, ToD);
return ToD;
}
ExpectedDecl ASTNodeImporter::VisitBindingDecl(BindingDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToND;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToND, Loc))
return std::move(Err);
if (ToND)
return ToND;
BindingDecl *ToD;
if (GetImportedOrCreateDecl(ToD, D, Importer.getToContext(), DC, Loc,
Name.getAsIdentifierInfo()))
return ToD;
Error Err = Error::success();
QualType ToType = importChecked(Err, D->getType());
Expr *ToBinding = importChecked(Err, D->getBinding());
ValueDecl *ToDecomposedDecl = importChecked(Err, D->getDecomposedDecl());
if (Err)
return std::move(Err);
ToD->setBinding(ToType, ToBinding);
ToD->setDecomposedDecl(ToDecomposedDecl);
addDeclToContexts(D, ToD);
return ToD;
}
ExpectedDecl ASTNodeImporter::VisitAccessSpecDecl(AccessSpecDecl *D) {
ExpectedSLoc LocOrErr = import(D->getLocation());
if (!LocOrErr)
return LocOrErr.takeError();
auto ColonLocOrErr = import(D->getColonLoc());
if (!ColonLocOrErr)
return ColonLocOrErr.takeError();
// Import the context of this declaration.
auto DCOrErr = Importer.ImportContext(D->getDeclContext());
if (!DCOrErr)
return DCOrErr.takeError();
DeclContext *DC = *DCOrErr;
AccessSpecDecl *ToD;
if (GetImportedOrCreateDecl(ToD, D, Importer.getToContext(), D->getAccess(),
DC, *LocOrErr, *ColonLocOrErr))
return ToD;
// Lexical DeclContext and Semantic DeclContext
// is always the same for the accessSpec.
ToD->setLexicalDeclContext(DC);
DC->addDeclInternal(ToD);
return ToD;
}
ExpectedDecl ASTNodeImporter::VisitStaticAssertDecl(StaticAssertDecl *D) {
auto DCOrErr = Importer.ImportContext(D->getDeclContext());
if (!DCOrErr)
return DCOrErr.takeError();
DeclContext *DC = *DCOrErr;
DeclContext *LexicalDC = DC;
Error Err = Error::success();
auto ToLocation = importChecked(Err, D->getLocation());
auto ToRParenLoc = importChecked(Err, D->getRParenLoc());
auto ToAssertExpr = importChecked(Err, D->getAssertExpr());
auto ToMessage = importChecked(Err, D->getMessage());
if (Err)
return std::move(Err);
StaticAssertDecl *ToD;
if (GetImportedOrCreateDecl(
ToD, D, Importer.getToContext(), DC, ToLocation, ToAssertExpr, ToMessage,
ToRParenLoc, D->isFailed()))
return ToD;
ToD->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToD);
return ToD;
}
ExpectedDecl ASTNodeImporter::VisitNamespaceDecl(NamespaceDecl *D) {
// Import the major distinguishing characteristics of this namespace.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
NamespaceDecl *MergeWithNamespace = nullptr;
if (!Name) {
// This is an anonymous namespace. Adopt an existing anonymous
// namespace if we can.
// FIXME: Not testable.
if (auto *TU = dyn_cast<TranslationUnitDecl>(DC))
MergeWithNamespace = TU->getAnonymousNamespace();
else
MergeWithNamespace = cast<NamespaceDecl>(DC)->getAnonymousNamespace();
} else {
SmallVector<NamedDecl *, 4> ConflictingDecls;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(Decl::IDNS_Namespace))
continue;
if (auto *FoundNS = dyn_cast<NamespaceDecl>(FoundDecl)) {
MergeWithNamespace = FoundNS;
ConflictingDecls.clear();
break;
}
ConflictingDecls.push_back(FoundDecl);
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
Name, DC, Decl::IDNS_Namespace, ConflictingDecls.data(),
ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
ExpectedSLoc BeginLocOrErr = import(D->getBeginLoc());
if (!BeginLocOrErr)
return BeginLocOrErr.takeError();
ExpectedSLoc RBraceLocOrErr = import(D->getRBraceLoc());
if (!RBraceLocOrErr)
return RBraceLocOrErr.takeError();
// Create the "to" namespace, if needed.
NamespaceDecl *ToNamespace = MergeWithNamespace;
if (!ToNamespace) {
if (GetImportedOrCreateDecl(ToNamespace, D, Importer.getToContext(), DC,
D->isInline(), *BeginLocOrErr, Loc,
Name.getAsIdentifierInfo(),
/*PrevDecl=*/nullptr, D->isNested()))
return ToNamespace;
ToNamespace->setRBraceLoc(*RBraceLocOrErr);
ToNamespace->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToNamespace);
// If this is an anonymous namespace, register it as the anonymous
// namespace within its context.
if (!Name) {
if (auto *TU = dyn_cast<TranslationUnitDecl>(DC))
TU->setAnonymousNamespace(ToNamespace);
else
cast<NamespaceDecl>(DC)->setAnonymousNamespace(ToNamespace);
}
}
Importer.MapImported(D, ToNamespace);
if (Error Err = ImportDeclContext(D))
return std::move(Err);
return ToNamespace;
}
ExpectedDecl ASTNodeImporter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
// Import the major distinguishing characteristics of this namespace.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *LookupD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, LookupD, Loc))
return std::move(Err);
if (LookupD)
return LookupD;
// NOTE: No conflict resolution is done for namespace aliases now.
Error Err = Error::success();
auto ToNamespaceLoc = importChecked(Err, D->getNamespaceLoc());
auto ToAliasLoc = importChecked(Err, D->getAliasLoc());
auto ToQualifierLoc = importChecked(Err, D->getQualifierLoc());
auto ToTargetNameLoc = importChecked(Err, D->getTargetNameLoc());
auto ToNamespace = importChecked(Err, D->getNamespace());
if (Err)
return std::move(Err);
IdentifierInfo *ToIdentifier = Importer.Import(D->getIdentifier());
NamespaceAliasDecl *ToD;
if (GetImportedOrCreateDecl(
ToD, D, Importer.getToContext(), DC, ToNamespaceLoc, ToAliasLoc,
ToIdentifier, ToQualifierLoc, ToTargetNameLoc, ToNamespace))
return ToD;
ToD->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToD);
return ToD;
}
ExpectedDecl
ASTNodeImporter::VisitTypedefNameDecl(TypedefNameDecl *D, bool IsAlias) {
// Import the major distinguishing characteristics of this typedef.
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
// Do not import the DeclContext, we will import it once the TypedefNameDecl
// is created.
if (Error Err = ImportDeclParts(D, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
DeclContext *DC = cast_or_null<DeclContext>(
Importer.GetAlreadyImportedOrNull(cast<Decl>(D->getDeclContext())));
DeclContext *LexicalDC =
cast_or_null<DeclContext>(Importer.GetAlreadyImportedOrNull(
cast<Decl>(D->getLexicalDeclContext())));
// If this typedef is not in block scope, determine whether we've
// seen a typedef with the same name (that we can merge with) or any
// other entity by that name (which name lookup could conflict with).
// Note: Repeated typedefs are not valid in C99:
// 'typedef int T; typedef int T;' is invalid
// We do not care about this now.
if (DC && !DC->isFunctionOrMethod()) {
SmallVector<NamedDecl *, 4> ConflictingDecls;
unsigned IDNS = Decl::IDNS_Ordinary;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(IDNS))
continue;
if (auto *FoundTypedef = dyn_cast<TypedefNameDecl>(FoundDecl)) {
if (!hasSameVisibilityContextAndLinkage(FoundTypedef, D))
continue;
QualType FromUT = D->getUnderlyingType();
QualType FoundUT = FoundTypedef->getUnderlyingType();
if (Importer.IsStructurallyEquivalent(FromUT, FoundUT)) {
// If the underlying declarations are unnamed records these can be
// imported as different types. We should create a distinct typedef
// node in this case.
// If we found an existing underlying type with a record in a
// different context (than the imported), this is already reason for
// having distinct typedef nodes for these.
// Again this can create situation like
// 'typedef int T; typedef int T;' but this is hard to avoid without
// a rename strategy at import.
if (!FromUT.isNull() && !FoundUT.isNull()) {
RecordDecl *FromR = FromUT->getAsRecordDecl();
RecordDecl *FoundR = FoundUT->getAsRecordDecl();
if (FromR && FoundR &&
!hasSameVisibilityContextAndLinkage(FoundR, FromR))
continue;
}
// If the "From" context has a complete underlying type but we
// already have a complete underlying type then return with that.
if (!FromUT->isIncompleteType() && !FoundUT->isIncompleteType())
return Importer.MapImported(D, FoundTypedef);
// FIXME Handle redecl chain. When you do that make consistent changes
// in ASTImporterLookupTable too.
} else {
ConflictingDecls.push_back(FoundDecl);
}
}
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
Name, DC, IDNS, ConflictingDecls.data(), ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
Error Err = Error::success();
auto ToUnderlyingType = importChecked(Err, D->getUnderlyingType());
auto ToTypeSourceInfo = importChecked(Err, D->getTypeSourceInfo());
auto ToBeginLoc = importChecked(Err, D->getBeginLoc());
if (Err)
return std::move(Err);
// Create the new typedef node.
// FIXME: ToUnderlyingType is not used.
(void)ToUnderlyingType;
TypedefNameDecl *ToTypedef;
if (IsAlias) {
if (GetImportedOrCreateDecl<TypeAliasDecl>(
ToTypedef, D, Importer.getToContext(), DC, ToBeginLoc, Loc,
Name.getAsIdentifierInfo(), ToTypeSourceInfo))
return ToTypedef;
} else if (GetImportedOrCreateDecl<TypedefDecl>(
ToTypedef, D, Importer.getToContext(), DC, ToBeginLoc, Loc,
Name.getAsIdentifierInfo(), ToTypeSourceInfo))
return ToTypedef;
// Import the DeclContext and set it to the Typedef.
if ((Err = ImportDeclContext(D, DC, LexicalDC)))
return std::move(Err);
ToTypedef->setDeclContext(DC);
ToTypedef->setLexicalDeclContext(LexicalDC);
// Add to the lookupTable because we could not do that in MapImported.
Importer.AddToLookupTable(ToTypedef);
ToTypedef->setAccess(D->getAccess());
// Templated declarations should not appear in DeclContext.
TypeAliasDecl *FromAlias = IsAlias ? cast<TypeAliasDecl>(D) : nullptr;
if (!FromAlias || !FromAlias->getDescribedAliasTemplate())
LexicalDC->addDeclInternal(ToTypedef);
return ToTypedef;
}
ExpectedDecl ASTNodeImporter::VisitTypedefDecl(TypedefDecl *D) {
return VisitTypedefNameDecl(D, /*IsAlias=*/false);
}
ExpectedDecl ASTNodeImporter::VisitTypeAliasDecl(TypeAliasDecl *D) {
return VisitTypedefNameDecl(D, /*IsAlias=*/true);
}
ExpectedDecl
ASTNodeImporter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
// Import the major distinguishing characteristics of this typedef.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *FoundD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, FoundD, Loc))
return std::move(Err);
if (FoundD)
return FoundD;
// If this typedef is not in block scope, determine whether we've
// seen a typedef with the same name (that we can merge with) or any
// other entity by that name (which name lookup could conflict with).
if (!DC->isFunctionOrMethod()) {
SmallVector<NamedDecl *, 4> ConflictingDecls;
unsigned IDNS = Decl::IDNS_Ordinary;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(IDNS))
continue;
if (auto *FoundAlias = dyn_cast<TypeAliasTemplateDecl>(FoundDecl)) {
if (IsStructuralMatch(D, FoundAlias))
return Importer.MapImported(D, FoundAlias);
ConflictingDecls.push_back(FoundDecl);
}
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
Name, DC, IDNS, ConflictingDecls.data(), ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
Error Err = Error::success();
auto ToTemplateParameters = importChecked(Err, D->getTemplateParameters());
auto ToTemplatedDecl = importChecked(Err, D->getTemplatedDecl());
if (Err)
return std::move(Err);
TypeAliasTemplateDecl *ToAlias;
if (GetImportedOrCreateDecl(ToAlias, D, Importer.getToContext(), DC, Loc,
Name, ToTemplateParameters, ToTemplatedDecl))
return ToAlias;
ToTemplatedDecl->setDescribedAliasTemplate(ToAlias);
ToAlias->setAccess(D->getAccess());
ToAlias->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToAlias);
if (DC != Importer.getToContext().getTranslationUnitDecl())
updateLookupTableForTemplateParameters(*ToTemplateParameters);
return ToAlias;
}
ExpectedDecl ASTNodeImporter::VisitLabelDecl(LabelDecl *D) {
// Import the major distinguishing characteristics of this label.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
assert(LexicalDC->isFunctionOrMethod());
LabelDecl *ToLabel;
if (D->isGnuLocal()) {
ExpectedSLoc BeginLocOrErr = import(D->getBeginLoc());
if (!BeginLocOrErr)
return BeginLocOrErr.takeError();
if (GetImportedOrCreateDecl(ToLabel, D, Importer.getToContext(), DC, Loc,
Name.getAsIdentifierInfo(), *BeginLocOrErr))
return ToLabel;
} else {
if (GetImportedOrCreateDecl(ToLabel, D, Importer.getToContext(), DC, Loc,
Name.getAsIdentifierInfo()))
return ToLabel;
}
Expected<LabelStmt *> ToStmtOrErr = import(D->getStmt());
if (!ToStmtOrErr)
return ToStmtOrErr.takeError();
ToLabel->setStmt(*ToStmtOrErr);
ToLabel->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToLabel);
return ToLabel;
}
ExpectedDecl ASTNodeImporter::VisitEnumDecl(EnumDecl *D) {
// Import the major distinguishing characteristics of this enum.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Figure out what enum name we're looking for.
unsigned IDNS = Decl::IDNS_Tag;
DeclarationName SearchName = Name;
if (!SearchName && D->getTypedefNameForAnonDecl()) {
if (Error Err = importInto(
SearchName, D->getTypedefNameForAnonDecl()->getDeclName()))
return std::move(Err);
IDNS = Decl::IDNS_Ordinary;
} else if (Importer.getToContext().getLangOpts().CPlusPlus)
IDNS |= Decl::IDNS_Ordinary;
// We may already have an enum of the same name; try to find and match it.
EnumDecl *PrevDecl = nullptr;
if (!DC->isFunctionOrMethod() && SearchName) {
SmallVector<NamedDecl *, 4> ConflictingDecls;
auto FoundDecls =
Importer.findDeclsInToCtx(DC, SearchName);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(IDNS))
continue;
if (auto *Typedef = dyn_cast<TypedefNameDecl>(FoundDecl)) {
if (const auto *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
FoundDecl = Tag->getDecl();
}
if (auto *FoundEnum = dyn_cast<EnumDecl>(FoundDecl)) {
if (!hasSameVisibilityContextAndLinkage(FoundEnum, D))
continue;
if (IsStructuralMatch(D, FoundEnum)) {
EnumDecl *FoundDef = FoundEnum->getDefinition();
if (D->isThisDeclarationADefinition() && FoundDef)
return Importer.MapImported(D, FoundDef);
PrevDecl = FoundEnum->getMostRecentDecl();
break;
}
ConflictingDecls.push_back(FoundDecl);
}
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
SearchName, DC, IDNS, ConflictingDecls.data(),
ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
Error Err = Error::success();
auto ToBeginLoc = importChecked(Err, D->getBeginLoc());
auto ToQualifierLoc = importChecked(Err, D->getQualifierLoc());
auto ToIntegerType = importChecked(Err, D->getIntegerType());
auto ToBraceRange = importChecked(Err, D->getBraceRange());
if (Err)
return std::move(Err);
// Create the enum declaration.
EnumDecl *D2;
if (GetImportedOrCreateDecl(
D2, D, Importer.getToContext(), DC, ToBeginLoc,
Loc, Name.getAsIdentifierInfo(), PrevDecl, D->isScoped(),
D->isScopedUsingClassTag(), D->isFixed()))
return D2;
D2->setQualifierInfo(ToQualifierLoc);
D2->setIntegerType(ToIntegerType);
D2->setBraceRange(ToBraceRange);
D2->setAccess(D->getAccess());
D2->setLexicalDeclContext(LexicalDC);
addDeclToContexts(D, D2);
if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) {
TemplateSpecializationKind SK = MemberInfo->getTemplateSpecializationKind();
EnumDecl *FromInst = D->getInstantiatedFromMemberEnum();
if (Expected<EnumDecl *> ToInstOrErr = import(FromInst))
D2->setInstantiationOfMemberEnum(*ToInstOrErr, SK);
else
return ToInstOrErr.takeError();
if (ExpectedSLoc POIOrErr = import(MemberInfo->getPointOfInstantiation()))
D2->getMemberSpecializationInfo()->setPointOfInstantiation(*POIOrErr);
else
return POIOrErr.takeError();
}
// Import the definition
if (D->isCompleteDefinition())
if (Error Err = ImportDefinition(D, D2))
return std::move(Err);
return D2;
}
ExpectedDecl ASTNodeImporter::VisitRecordDecl(RecordDecl *D) {
bool IsFriendTemplate = false;
if (auto *DCXX = dyn_cast<CXXRecordDecl>(D)) {
IsFriendTemplate =
DCXX->getDescribedClassTemplate() &&
DCXX->getDescribedClassTemplate()->getFriendObjectKind() !=
Decl::FOK_None;
}
// Import the major distinguishing characteristics of this record.
DeclContext *DC = nullptr, *LexicalDC = nullptr;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD = nullptr;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Figure out what structure name we're looking for.
unsigned IDNS = Decl::IDNS_Tag;
DeclarationName SearchName = Name;
if (!SearchName && D->getTypedefNameForAnonDecl()) {
if (Error Err = importInto(
SearchName, D->getTypedefNameForAnonDecl()->getDeclName()))
return std::move(Err);
IDNS = Decl::IDNS_Ordinary;
} else if (Importer.getToContext().getLangOpts().CPlusPlus)
IDNS |= Decl::IDNS_Ordinary | Decl::IDNS_TagFriend;
bool IsDependentContext = DC != LexicalDC ? LexicalDC->isDependentContext()
: DC->isDependentContext();
bool DependentFriend = IsFriendTemplate && IsDependentContext;
// We may already have a record of the same name; try to find and match it.
RecordDecl *PrevDecl = nullptr;
if (!DependentFriend && !DC->isFunctionOrMethod() && !D->isLambda()) {
SmallVector<NamedDecl *, 4> ConflictingDecls;
auto FoundDecls =
Importer.findDeclsInToCtx(DC, SearchName);
if (!FoundDecls.empty()) {
// We're going to have to compare D against potentially conflicting Decls,
// so complete it.
if (D->hasExternalLexicalStorage() && !D->isCompleteDefinition())
D->getASTContext().getExternalSource()->CompleteType(D);
}
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(IDNS))
continue;
Decl *Found = FoundDecl;
if (auto *Typedef = dyn_cast<TypedefNameDecl>(Found)) {
if (const auto *Tag = Typedef->getUnderlyingType()->getAs<TagType>())
Found = Tag->getDecl();
}
if (auto *FoundRecord = dyn_cast<RecordDecl>(Found)) {
// Do not emit false positive diagnostic in case of unnamed
// struct/union and in case of anonymous structs. Would be false
// because there may be several anonymous/unnamed structs in a class.
// E.g. these are both valid:
// struct A { // unnamed structs
// struct { struct A *next; } entry0;
// struct { struct A *next; } entry1;
// };
// struct X { struct { int a; }; struct { int b; }; }; // anon structs
if (!SearchName)
if (!IsStructuralMatch(D, FoundRecord, false))
continue;
if (!hasSameVisibilityContextAndLinkage(FoundRecord, D))
continue;
if (IsStructuralMatch(D, FoundRecord)) {
RecordDecl *FoundDef = FoundRecord->getDefinition();
if (D->isThisDeclarationADefinition() && FoundDef) {
// FIXME: Structural equivalence check should check for same
// user-defined methods.
Importer.MapImported(D, FoundDef);
if (const auto *DCXX = dyn_cast<CXXRecordDecl>(D)) {
auto *FoundCXX = dyn_cast<CXXRecordDecl>(FoundDef);
assert(FoundCXX && "Record type mismatch");
if (!Importer.isMinimalImport())
// FoundDef may not have every implicit method that D has
// because implicit methods are created only if they are used.
if (Error Err = ImportImplicitMethods(DCXX, FoundCXX))
return std::move(Err);
}
}
PrevDecl = FoundRecord->getMostRecentDecl();
break;
}
ConflictingDecls.push_back(FoundDecl);
} // kind is RecordDecl
} // for
if (!ConflictingDecls.empty() && SearchName) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
SearchName, DC, IDNS, ConflictingDecls.data(),
ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
ExpectedSLoc BeginLocOrErr = import(D->getBeginLoc());
if (!BeginLocOrErr)
return BeginLocOrErr.takeError();
// Create the record declaration.
RecordDecl *D2 = nullptr;
CXXRecordDecl *D2CXX = nullptr;
if (auto *DCXX = dyn_cast<CXXRecordDecl>(D)) {
if (DCXX->isLambda()) {
auto TInfoOrErr = import(DCXX->getLambdaTypeInfo());
if (!TInfoOrErr)
return TInfoOrErr.takeError();
if (GetImportedOrCreateSpecialDecl(
D2CXX, CXXRecordDecl::CreateLambda, D, Importer.getToContext(),
DC, *TInfoOrErr, Loc, DCXX->getLambdaDependencyKind(),
DCXX->isGenericLambda(), DCXX->getLambdaCaptureDefault()))
return D2CXX;
CXXRecordDecl::LambdaNumbering Numbering = DCXX->getLambdaNumbering();
ExpectedDecl CDeclOrErr = import(Numbering.ContextDecl);
if (!CDeclOrErr)
return CDeclOrErr.takeError();
Numbering.ContextDecl = *CDeclOrErr;
D2CXX->setLambdaNumbering(Numbering);
} else if (DCXX->isInjectedClassName()) {
// We have to be careful to do a similar dance to the one in
// Sema::ActOnStartCXXMemberDeclarations
const bool DelayTypeCreation = true;
if (GetImportedOrCreateDecl(
D2CXX, D, Importer.getToContext(), D->getTagKind(), DC,
*BeginLocOrErr, Loc, Name.getAsIdentifierInfo(),
cast_or_null<CXXRecordDecl>(PrevDecl), DelayTypeCreation))
return D2CXX;
Importer.getToContext().getTypeDeclType(
D2CXX, dyn_cast<CXXRecordDecl>(DC));
} else {
if (GetImportedOrCreateDecl(D2CXX, D, Importer.getToContext(),
D->getTagKind(), DC, *BeginLocOrErr, Loc,
Name.getAsIdentifierInfo(),
cast_or_null<CXXRecordDecl>(PrevDecl)))
return D2CXX;
}
D2 = D2CXX;
D2->setAccess(D->getAccess());
D2->setLexicalDeclContext(LexicalDC);
addDeclToContexts(D, D2);
if (ClassTemplateDecl *FromDescribed =
DCXX->getDescribedClassTemplate()) {
ClassTemplateDecl *ToDescribed;
if (Error Err = importInto(ToDescribed, FromDescribed))
return std::move(Err);
D2CXX->setDescribedClassTemplate(ToDescribed);
if (!DCXX->isInjectedClassName() && !IsFriendTemplate) {
// In a record describing a template the type should be an
// InjectedClassNameType (see Sema::CheckClassTemplate). Update the
// previously set type to the correct value here (ToDescribed is not
// available at record create).
CXXRecordDecl *Injected = nullptr;
for (NamedDecl *Found : D2CXX->noload_lookup(Name)) {
auto *Record = dyn_cast<CXXRecordDecl>(Found);
if (Record && Record->isInjectedClassName()) {
Injected = Record;
break;
}
}
// Create an injected type for the whole redecl chain.
// The chain may contain an already existing injected type at the start,
// if yes this should be reused. We must ensure that only one type
// object exists for the injected type (including the injected record
// declaration), ASTContext does not check it.
SmallVector<Decl *, 2> Redecls =
getCanonicalForwardRedeclChain(D2CXX);
const Type *FrontTy =
cast<CXXRecordDecl>(Redecls.front())->getTypeForDecl();
QualType InjSpec;
if (auto *InjTy = FrontTy->getAs<InjectedClassNameType>())
InjSpec = InjTy->getInjectedSpecializationType();
else
InjSpec = ToDescribed->getInjectedClassNameSpecialization();
for (auto *R : Redecls) {
auto *RI = cast<CXXRecordDecl>(R);
if (R != Redecls.front() ||
!isa<InjectedClassNameType>(RI->getTypeForDecl()))
RI->setTypeForDecl(nullptr);
// This function tries to get the injected type from getTypeForDecl,
// then from the previous declaration if possible. If not, it creates
// a new type.
Importer.getToContext().getInjectedClassNameType(RI, InjSpec);
}
// Set the new type for the injected decl too.
if (Injected) {
Injected->setTypeForDecl(nullptr);
// This function will copy the injected type from D2CXX into Injected.
// The injected decl does not have a previous decl to copy from.
Importer.getToContext().getTypeDeclType(Injected, D2CXX);
}
}
} else if (MemberSpecializationInfo *MemberInfo =
DCXX->getMemberSpecializationInfo()) {
TemplateSpecializationKind SK =
MemberInfo->getTemplateSpecializationKind();
CXXRecordDecl *FromInst = DCXX->getInstantiatedFromMemberClass();
if (Expected<CXXRecordDecl *> ToInstOrErr = import(FromInst))
D2CXX->setInstantiationOfMemberClass(*ToInstOrErr, SK);
else
return ToInstOrErr.takeError();
if (ExpectedSLoc POIOrErr =
import(MemberInfo->getPointOfInstantiation()))
D2CXX->getMemberSpecializationInfo()->setPointOfInstantiation(
*POIOrErr);
else
return POIOrErr.takeError();
}
} else {
if (GetImportedOrCreateDecl(D2, D, Importer.getToContext(),
D->getTagKind(), DC, *BeginLocOrErr, Loc,
Name.getAsIdentifierInfo(), PrevDecl))
return D2;
D2->setLexicalDeclContext(LexicalDC);
addDeclToContexts(D, D2);
}
if (auto BraceRangeOrErr = import(D->getBraceRange()))
D2->setBraceRange(*BraceRangeOrErr);
else
return BraceRangeOrErr.takeError();
if (auto QualifierLocOrErr = import(D->getQualifierLoc()))
D2->setQualifierInfo(*QualifierLocOrErr);
else
return QualifierLocOrErr.takeError();
if (D->isAnonymousStructOrUnion())
D2->setAnonymousStructOrUnion(true);
if (D->isCompleteDefinition())
if (Error Err = ImportDefinition(D, D2, IDK_Default))
return std::move(Err);
return D2;
}
ExpectedDecl ASTNodeImporter::VisitEnumConstantDecl(EnumConstantDecl *D) {
// Import the major distinguishing characteristics of this enumerator.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Determine whether there are any other declarations with the same name and
// in the same context.
if (!LexicalDC->isFunctionOrMethod()) {
SmallVector<NamedDecl *, 4> ConflictingDecls;
unsigned IDNS = Decl::IDNS_Ordinary;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(IDNS))
continue;
if (auto *FoundEnumConstant = dyn_cast<EnumConstantDecl>(FoundDecl)) {
if (IsStructuralMatch(D, FoundEnumConstant))
return Importer.MapImported(D, FoundEnumConstant);
ConflictingDecls.push_back(FoundDecl);
}
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
Name, DC, IDNS, ConflictingDecls.data(), ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
ExpectedType TypeOrErr = import(D->getType());
if (!TypeOrErr)
return TypeOrErr.takeError();
ExpectedExpr InitOrErr = import(D->getInitExpr());
if (!InitOrErr)
return InitOrErr.takeError();
EnumConstantDecl *ToEnumerator;
if (GetImportedOrCreateDecl(
ToEnumerator, D, Importer.getToContext(), cast<EnumDecl>(DC), Loc,
Name.getAsIdentifierInfo(), *TypeOrErr, *InitOrErr, D->getInitVal()))
return ToEnumerator;
ToEnumerator->setAccess(D->getAccess());
ToEnumerator->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToEnumerator);
return ToEnumerator;
}
Error ASTNodeImporter::ImportTemplateParameterLists(const DeclaratorDecl *FromD,
DeclaratorDecl *ToD) {
unsigned int Num = FromD->getNumTemplateParameterLists();
if (Num == 0)
return Error::success();
SmallVector<TemplateParameterList *, 2> ToTPLists(Num);
for (unsigned int I = 0; I < Num; ++I)
if (Expected<TemplateParameterList *> ToTPListOrErr =
import(FromD->getTemplateParameterList(I)))
ToTPLists[I] = *ToTPListOrErr;
else
return ToTPListOrErr.takeError();
ToD->setTemplateParameterListsInfo(Importer.ToContext, ToTPLists);
return Error::success();
}
Error ASTNodeImporter::ImportTemplateInformation(
FunctionDecl *FromFD, FunctionDecl *ToFD) {
switch (FromFD->getTemplatedKind()) {
case FunctionDecl::TK_NonTemplate:
case FunctionDecl::TK_FunctionTemplate:
return Error::success();
case FunctionDecl::TK_DependentNonTemplate:
if (Expected<FunctionDecl *> InstFDOrErr =
import(FromFD->getInstantiatedFromDecl()))
ToFD->setInstantiatedFromDecl(*InstFDOrErr);
return Error::success();
case FunctionDecl::TK_MemberSpecialization: {
TemplateSpecializationKind TSK = FromFD->getTemplateSpecializationKind();
if (Expected<FunctionDecl *> InstFDOrErr =
import(FromFD->getInstantiatedFromMemberFunction()))
ToFD->setInstantiationOfMemberFunction(*InstFDOrErr, TSK);
else
return InstFDOrErr.takeError();
if (ExpectedSLoc POIOrErr = import(
FromFD->getMemberSpecializationInfo()->getPointOfInstantiation()))
ToFD->getMemberSpecializationInfo()->setPointOfInstantiation(*POIOrErr);
else
return POIOrErr.takeError();
return Error::success();
}
case FunctionDecl::TK_FunctionTemplateSpecialization: {
auto FunctionAndArgsOrErr =
ImportFunctionTemplateWithTemplateArgsFromSpecialization(FromFD);
if (!FunctionAndArgsOrErr)
return FunctionAndArgsOrErr.takeError();
TemplateArgumentList *ToTAList = TemplateArgumentList::CreateCopy(
Importer.getToContext(), std::get<1>(*FunctionAndArgsOrErr));
auto *FTSInfo = FromFD->getTemplateSpecializationInfo();
TemplateArgumentListInfo ToTAInfo;
const auto *FromTAArgsAsWritten = FTSInfo->TemplateArgumentsAsWritten;
if (FromTAArgsAsWritten)
if (Error Err = ImportTemplateArgumentListInfo(
*FromTAArgsAsWritten, ToTAInfo))
return Err;
ExpectedSLoc POIOrErr = import(FTSInfo->getPointOfInstantiation());
if (!POIOrErr)
return POIOrErr.takeError();
if (Error Err = ImportTemplateParameterLists(FromFD, ToFD))
return Err;
TemplateSpecializationKind TSK = FTSInfo->getTemplateSpecializationKind();
ToFD->setFunctionTemplateSpecialization(
std::get<0>(*FunctionAndArgsOrErr), ToTAList, /* InsertPos= */ nullptr,
TSK, FromTAArgsAsWritten ? &ToTAInfo : nullptr, *POIOrErr);
return Error::success();
}
case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
auto *FromInfo = FromFD->getDependentSpecializationInfo();
UnresolvedSet<8> Candidates;
for (FunctionTemplateDecl *FTD : FromInfo->getCandidates()) {
if (Expected<FunctionTemplateDecl *> ToFTDOrErr = import(FTD))
Candidates.addDecl(*ToFTDOrErr);
else
return ToFTDOrErr.takeError();
}
// Import TemplateArgumentListInfo.
TemplateArgumentListInfo ToTAInfo;
const auto *FromTAArgsAsWritten = FromInfo->TemplateArgumentsAsWritten;
if (FromTAArgsAsWritten)
if (Error Err =
ImportTemplateArgumentListInfo(*FromTAArgsAsWritten, ToTAInfo))
return Err;
ToFD->setDependentTemplateSpecialization(
Importer.getToContext(), Candidates,
FromTAArgsAsWritten ? &ToTAInfo : nullptr);
return Error::success();
}
}
llvm_unreachable("All cases should be covered!");
}
Expected<FunctionDecl *>
ASTNodeImporter::FindFunctionTemplateSpecialization(FunctionDecl *FromFD) {
auto FunctionAndArgsOrErr =
ImportFunctionTemplateWithTemplateArgsFromSpecialization(FromFD);
if (!FunctionAndArgsOrErr)
return FunctionAndArgsOrErr.takeError();
FunctionTemplateDecl *Template;
TemplateArgsTy ToTemplArgs;
std::tie(Template, ToTemplArgs) = *FunctionAndArgsOrErr;
void *InsertPos = nullptr;
auto *FoundSpec = Template->findSpecialization(ToTemplArgs, InsertPos);
return FoundSpec;
}
Error ASTNodeImporter::ImportFunctionDeclBody(FunctionDecl *FromFD,
FunctionDecl *ToFD) {
if (Stmt *FromBody = FromFD->getBody()) {
if (ExpectedStmt ToBodyOrErr = import(FromBody))
ToFD->setBody(*ToBodyOrErr);
else
return ToBodyOrErr.takeError();
}
return Error::success();
}
// Returns true if the given D has a DeclContext up to the TranslationUnitDecl
// which is equal to the given DC, or D is equal to DC.
static bool isAncestorDeclContextOf(const DeclContext *DC, const Decl *D) {
const DeclContext *DCi = dyn_cast<DeclContext>(D);
if (!DCi)
DCi = D->getDeclContext();
assert(DCi && "Declaration should have a context");
while (DCi != D->getTranslationUnitDecl()) {
if (DCi == DC)
return true;
DCi = DCi->getParent();
}
return false;
}
// Check if there is a declaration that has 'DC' as parent context and is
// referenced from statement 'S' or one of its children. The search is done in
// BFS order through children of 'S'.
static bool isAncestorDeclContextOf(const DeclContext *DC, const Stmt *S) {
SmallVector<const Stmt *> ToProcess;
ToProcess.push_back(S);
while (!ToProcess.empty()) {
const Stmt *CurrentS = ToProcess.pop_back_val();
ToProcess.append(CurrentS->child_begin(), CurrentS->child_end());
if (const auto *DeclRef = dyn_cast<DeclRefExpr>(CurrentS)) {
if (const Decl *D = DeclRef->getDecl())
if (isAncestorDeclContextOf(DC, D))
return true;
} else if (const auto *E =
dyn_cast_or_null<SubstNonTypeTemplateParmExpr>(CurrentS)) {
if (const Decl *D = E->getAssociatedDecl())
if (isAncestorDeclContextOf(DC, D))
return true;
}
}
return false;
}
namespace {
/// Check if a type has any reference to a declaration that is inside the body
/// of a function.
/// The \c CheckType(QualType) function should be used to determine
/// this property.
///
/// The type visitor visits one type object only (not recursive).
/// To find all referenced declarations we must discover all type objects until
/// the canonical type is reached (walk over typedef and similar objects). This
/// is done by loop over all "sugar" type objects. For every such type we must
/// check all declarations that are referenced from it. For this check the
/// visitor is used. In the visit functions all referenced declarations except
/// the one that follows in the sugar chain (if any) must be checked. For this
/// check the same visitor is re-used (it has no state-dependent data).
///
/// The visit functions have 3 possible return values:
/// - True, found a declaration inside \c ParentDC.
/// - False, found declarations only outside \c ParentDC and it is not possible
/// to find more declarations (the "sugar" chain does not continue).
/// - Empty optional value, found no declarations or only outside \c ParentDC,
/// but it is possible to find more declarations in the type "sugar" chain.
/// The loop over the "sugar" types can be implemented by using type visit
/// functions only (call \c CheckType with the desugared type). With the current
/// solution no visit function is needed if the type has only a desugared type
/// as data.
class IsTypeDeclaredInsideVisitor
: public TypeVisitor<IsTypeDeclaredInsideVisitor, std::optional<bool>> {
public:
IsTypeDeclaredInsideVisitor(const FunctionDecl *ParentDC)
: ParentDC(ParentDC) {}
bool CheckType(QualType T) {
// Check the chain of "sugar" types.
// The "sugar" types are typedef or similar types that have the same
// canonical type.
if (std::optional<bool> Res = Visit(T.getTypePtr()))
return *Res;
QualType DsT =
T.getSingleStepDesugaredType(ParentDC->getParentASTContext());
while (DsT != T) {
if (std::optional<bool> Res = Visit(DsT.getTypePtr()))
return *Res;
T = DsT;
DsT = T.getSingleStepDesugaredType(ParentDC->getParentASTContext());
}
return false;
}
std::optional<bool> VisitTagType(const TagType *T) {
if (auto *Spec = dyn_cast<ClassTemplateSpecializationDecl>(T->getDecl()))
for (const auto &Arg : Spec->getTemplateArgs().asArray())
if (checkTemplateArgument(Arg))
return true;
return isAncestorDeclContextOf(ParentDC, T->getDecl());
}
std::optional<bool> VisitPointerType(const PointerType *T) {
return CheckType(T->getPointeeType());
}
std::optional<bool> VisitReferenceType(const ReferenceType *T) {
return CheckType(T->getPointeeTypeAsWritten());
}
std::optional<bool> VisitTypedefType(const TypedefType *T) {
const TypedefNameDecl *TD = T->getDecl();
assert(TD);
return isAncestorDeclContextOf(ParentDC, TD);
}
std::optional<bool> VisitUsingType(const UsingType *T) {
if (T->getFoundDecl() &&
isAncestorDeclContextOf(ParentDC, T->getFoundDecl()))
return true;
return {};
}
std::optional<bool>
VisitTemplateSpecializationType(const TemplateSpecializationType *T) {
for (const auto &Arg : T->template_arguments())
if (checkTemplateArgument(Arg))
return true;
// This type is a "sugar" to a record type, it can have a desugared type.
return {};
}
std::optional<bool>
VisitSubstTemplateTypeParmType(const SubstTemplateTypeParmType *T) {
// The "associated declaration" can be the same as ParentDC.
if (isAncestorDeclContextOf(ParentDC, T->getAssociatedDecl()))
return true;
return {};
}
std::optional<bool> VisitConstantArrayType(const ConstantArrayType *T) {
if (T->getSizeExpr() && isAncestorDeclContextOf(ParentDC, T->getSizeExpr()))
return true;
return CheckType(T->getElementType());
}
std::optional<bool> VisitVariableArrayType(const VariableArrayType *T) {
llvm_unreachable(
"Variable array should not occur in deduced return type of a function");
}
std::optional<bool> VisitIncompleteArrayType(const IncompleteArrayType *T) {
llvm_unreachable("Incomplete array should not occur in deduced return type "
"of a function");
}
std::optional<bool> VisitDependentArrayType(const IncompleteArrayType *T) {
llvm_unreachable("Dependent array should not occur in deduced return type "
"of a function");
}
private:
const DeclContext *const ParentDC;
bool checkTemplateArgument(const TemplateArgument &Arg) {
switch (Arg.getKind()) {
case TemplateArgument::Null:
return false;
case TemplateArgument::Integral:
return CheckType(Arg.getIntegralType());
case TemplateArgument::Type:
return CheckType(Arg.getAsType());
case TemplateArgument::Expression:
return isAncestorDeclContextOf(ParentDC, Arg.getAsExpr());
case TemplateArgument::Declaration:
// FIXME: The declaration in this case is not allowed to be in a function?
return isAncestorDeclContextOf(ParentDC, Arg.getAsDecl());
case TemplateArgument::NullPtr:
// FIXME: The type is not allowed to be in the function?
return CheckType(Arg.getNullPtrType());
case TemplateArgument::StructuralValue:
return CheckType(Arg.getStructuralValueType());
case TemplateArgument::Pack:
for (const auto &PackArg : Arg.getPackAsArray())
if (checkTemplateArgument(PackArg))
return true;
return false;
case TemplateArgument::Template:
// Templates can not be defined locally in functions.
// A template passed as argument can be not in ParentDC.
return false;
case TemplateArgument::TemplateExpansion:
// Templates can not be defined locally in functions.
// A template passed as argument can be not in ParentDC.
return false;
}
llvm_unreachable("Unknown TemplateArgument::ArgKind enum");
};
};
} // namespace
/// This function checks if the function has 'auto' return type that contains
/// a reference (in any way) to a declaration inside the same function.
bool ASTNodeImporter::hasAutoReturnTypeDeclaredInside(FunctionDecl *D) {
QualType FromTy = D->getType();
const auto *FromFPT = FromTy->getAs<FunctionProtoType>();
assert(FromFPT && "Must be called on FunctionProtoType");
QualType RetT = FromFPT->getReturnType();
if (isa<AutoType>(RetT.getTypePtr())) {
FunctionDecl *Def = D->getDefinition();
IsTypeDeclaredInsideVisitor Visitor(Def ? Def : D);
return Visitor.CheckType(RetT);
}
return false;
}
ExplicitSpecifier
ASTNodeImporter::importExplicitSpecifier(Error &Err, ExplicitSpecifier ESpec) {
Expr *ExplicitExpr = ESpec.getExpr();
if (ExplicitExpr)
ExplicitExpr = importChecked(Err, ESpec.getExpr());
return ExplicitSpecifier(ExplicitExpr, ESpec.getKind());
}
ExpectedDecl ASTNodeImporter::VisitFunctionDecl(FunctionDecl *D) {
SmallVector<Decl *, 2> Redecls = getCanonicalForwardRedeclChain(D);
auto RedeclIt = Redecls.begin();
// Import the first part of the decl chain. I.e. import all previous
// declarations starting from the canonical decl.
for (; RedeclIt != Redecls.end() && *RedeclIt != D; ++RedeclIt) {
ExpectedDecl ToRedeclOrErr = import(*RedeclIt);
if (!ToRedeclOrErr)
return ToRedeclOrErr.takeError();
}
assert(*RedeclIt == D);
// Import the major distinguishing characteristics of this function.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
FunctionDecl *FoundByLookup = nullptr;
FunctionTemplateDecl *FromFT = D->getDescribedFunctionTemplate();
// If this is a function template specialization, then try to find the same
// existing specialization in the "to" context. The lookup below will not
// find any specialization, but would find the primary template; thus, we
// have to skip normal lookup in case of specializations.
// FIXME handle member function templates (TK_MemberSpecialization) similarly?
if (D->getTemplatedKind() ==
FunctionDecl::TK_FunctionTemplateSpecialization) {
auto FoundFunctionOrErr = FindFunctionTemplateSpecialization(D);
if (!FoundFunctionOrErr)
return FoundFunctionOrErr.takeError();
if (FunctionDecl *FoundFunction = *FoundFunctionOrErr) {
if (Decl *Def = FindAndMapDefinition(D, FoundFunction))
return Def;
FoundByLookup = FoundFunction;
}
}
// Try to find a function in our own ("to") context with the same name, same
// type, and in the same context as the function we're importing.
else if (!LexicalDC->isFunctionOrMethod()) {
SmallVector<NamedDecl *, 4> ConflictingDecls;
unsigned IDNS = Decl::IDNS_Ordinary | Decl::IDNS_OrdinaryFriend;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(IDNS))
continue;
if (auto *FoundFunction = dyn_cast<FunctionDecl>(FoundDecl)) {
if (!hasSameVisibilityContextAndLinkage(FoundFunction, D))
continue;
if (IsStructuralMatch(D, FoundFunction)) {
if (Decl *Def = FindAndMapDefinition(D, FoundFunction))
return Def;
FoundByLookup = FoundFunction;
break;
}
// FIXME: Check for overloading more carefully, e.g., by boosting
// Sema::IsOverload out to the AST library.
// Function overloading is okay in C++.
if (Importer.getToContext().getLangOpts().CPlusPlus)
continue;
// Complain about inconsistent function types.
Importer.ToDiag(Loc, diag::warn_odr_function_type_inconsistent)
<< Name << D->getType() << FoundFunction->getType();
Importer.ToDiag(FoundFunction->getLocation(), diag::note_odr_value_here)
<< FoundFunction->getType();
ConflictingDecls.push_back(FoundDecl);
}
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
Name, DC, IDNS, ConflictingDecls.data(), ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
// We do not allow more than one in-class declaration of a function. This is
// because AST clients like VTableBuilder asserts on this. VTableBuilder
// assumes there is only one in-class declaration. Building a redecl
// chain would result in more than one in-class declaration for
// overrides (even if they are part of the same redecl chain inside the
// derived class.)
if (FoundByLookup) {
if (isa<CXXMethodDecl>(FoundByLookup)) {
if (D->getLexicalDeclContext() == D->getDeclContext()) {
if (!D->doesThisDeclarationHaveABody()) {
if (FunctionTemplateDecl *DescribedD =
D->getDescribedFunctionTemplate()) {
// Handle a "templated" function together with its described
// template. This avoids need for a similar check at import of the
// described template.
assert(FoundByLookup->getDescribedFunctionTemplate() &&
"Templated function mapped to non-templated?");
Importer.MapImported(DescribedD,
FoundByLookup->getDescribedFunctionTemplate());
}
return Importer.MapImported(D, FoundByLookup);
} else {
// Let's continue and build up the redecl chain in this case.
// FIXME Merge the functions into one decl.
}
}
}
}
DeclarationNameInfo NameInfo(Name, Loc);
// Import additional name location/type info.
if (Error Err = ImportDeclarationNameLoc(D->getNameInfo(), NameInfo))
return std::move(Err);
QualType FromTy = D->getType();
TypeSourceInfo *FromTSI = D->getTypeSourceInfo();
// Set to true if we do not import the type of the function as is. There are
// cases when the original type would result in an infinite recursion during
// the import. To avoid an infinite recursion when importing, we create the
// FunctionDecl with a simplified function type and update it only after the
// relevant AST nodes are already imported.
// The type is related to TypeSourceInfo (it references the type), so we must
// do the same with TypeSourceInfo.
bool UsedDifferentProtoType = false;
if (const auto *FromFPT = FromTy->getAs<FunctionProtoType>()) {
QualType FromReturnTy = FromFPT->getReturnType();
// Functions with auto return type may define a struct inside their body
// and the return type could refer to that struct.
// E.g.: auto foo() { struct X{}; return X(); }
// To avoid an infinite recursion when importing, create the FunctionDecl
// with a simplified return type.
if (hasAutoReturnTypeDeclaredInside(D)) {
FromReturnTy = Importer.getFromContext().VoidTy;
UsedDifferentProtoType = true;
}
FunctionProtoType::ExtProtoInfo FromEPI = FromFPT->getExtProtoInfo();
// FunctionProtoType::ExtProtoInfo's ExceptionSpecDecl can point to the
// FunctionDecl that we are importing the FunctionProtoType for.
// To avoid an infinite recursion when importing, create the FunctionDecl
// with a simplified function type.
if (FromEPI.ExceptionSpec.SourceDecl ||
FromEPI.ExceptionSpec.SourceTemplate ||
FromEPI.ExceptionSpec.NoexceptExpr) {
FunctionProtoType::ExtProtoInfo DefaultEPI;
FromEPI = DefaultEPI;
UsedDifferentProtoType = true;
}
FromTy = Importer.getFromContext().getFunctionType(
FromReturnTy, FromFPT->getParamTypes(), FromEPI);
FromTSI = Importer.getFromContext().getTrivialTypeSourceInfo(
FromTy, D->getBeginLoc());
}
Error Err = Error::success();
auto T = importChecked(Err, FromTy);
auto TInfo = importChecked(Err, FromTSI);
auto ToInnerLocStart = importChecked(Err, D->getInnerLocStart());
auto ToEndLoc = importChecked(Err, D->getEndLoc());
auto ToDefaultLoc = importChecked(Err, D->getDefaultLoc());
auto ToQualifierLoc = importChecked(Err, D->getQualifierLoc());
auto TrailingRequiresClause =
importChecked(Err, D->getTrailingRequiresClause());
if (Err)
return std::move(Err);
// Import the function parameters.
SmallVector<ParmVarDecl *, 8> Parameters;
for (auto *P : D->parameters()) {
if (Expected<ParmVarDecl *> ToPOrErr = import(P))
Parameters.push_back(*ToPOrErr);
else
return ToPOrErr.takeError();
}
// Create the imported function.
FunctionDecl *ToFunction = nullptr;
if (auto *FromConstructor = dyn_cast<CXXConstructorDecl>(D)) {
ExplicitSpecifier ESpec =
importExplicitSpecifier(Err, FromConstructor->getExplicitSpecifier());
if (Err)
return std::move(Err);
auto ToInheritedConstructor = InheritedConstructor();
if (FromConstructor->isInheritingConstructor()) {
Expected<InheritedConstructor> ImportedInheritedCtor =
import(FromConstructor->getInheritedConstructor());
if (!ImportedInheritedCtor)
return ImportedInheritedCtor.takeError();
ToInheritedConstructor = *ImportedInheritedCtor;
}
if (GetImportedOrCreateDecl<CXXConstructorDecl>(
ToFunction, D, Importer.getToContext(), cast<CXXRecordDecl>(DC),
ToInnerLocStart, NameInfo, T, TInfo, ESpec, D->UsesFPIntrin(),
D->isInlineSpecified(), D->isImplicit(), D->getConstexprKind(),
ToInheritedConstructor, TrailingRequiresClause))
return ToFunction;
} else if (CXXDestructorDecl *FromDtor = dyn_cast<CXXDestructorDecl>(D)) {
Error Err = Error::success();
auto ToOperatorDelete = importChecked(
Err, const_cast<FunctionDecl *>(FromDtor->getOperatorDelete()));
auto ToThisArg = importChecked(Err, FromDtor->getOperatorDeleteThisArg());
if (Err)
return std::move(Err);
if (GetImportedOrCreateDecl<CXXDestructorDecl>(
ToFunction, D, Importer.getToContext(), cast<CXXRecordDecl>(DC),
ToInnerLocStart, NameInfo, T, TInfo, D->UsesFPIntrin(),
D->isInlineSpecified(), D->isImplicit(), D->getConstexprKind(),
TrailingRequiresClause))
return ToFunction;
CXXDestructorDecl *ToDtor = cast<CXXDestructorDecl>(ToFunction);
ToDtor->setOperatorDelete(ToOperatorDelete, ToThisArg);
} else if (CXXConversionDecl *FromConversion =
dyn_cast<CXXConversionDecl>(D)) {
ExplicitSpecifier ESpec =
importExplicitSpecifier(Err, FromConversion->getExplicitSpecifier());
if (Err)
return std::move(Err);
if (GetImportedOrCreateDecl<CXXConversionDecl>(
ToFunction, D, Importer.getToContext(), cast<CXXRecordDecl>(DC),
ToInnerLocStart, NameInfo, T, TInfo, D->UsesFPIntrin(),
D->isInlineSpecified(), ESpec, D->getConstexprKind(),
SourceLocation(), TrailingRequiresClause))
return ToFunction;
} else if (auto *Method = dyn_cast<CXXMethodDecl>(D)) {
if (GetImportedOrCreateDecl<CXXMethodDecl>(
ToFunction, D, Importer.getToContext(), cast<CXXRecordDecl>(DC),
ToInnerLocStart, NameInfo, T, TInfo, Method->getStorageClass(),
Method->UsesFPIntrin(), Method->isInlineSpecified(),
D->getConstexprKind(), SourceLocation(), TrailingRequiresClause))
return ToFunction;
} else if (auto *Guide = dyn_cast<CXXDeductionGuideDecl>(D)) {
ExplicitSpecifier ESpec =
importExplicitSpecifier(Err, Guide->getExplicitSpecifier());
CXXConstructorDecl *Ctor =
importChecked(Err, Guide->getCorrespondingConstructor());
if (Err)
return std::move(Err);
if (GetImportedOrCreateDecl<CXXDeductionGuideDecl>(
ToFunction, D, Importer.getToContext(), DC, ToInnerLocStart, ESpec,
NameInfo, T, TInfo, ToEndLoc, Ctor))
return ToFunction;
cast<CXXDeductionGuideDecl>(ToFunction)
->setDeductionCandidateKind(Guide->getDeductionCandidateKind());
} else {
if (GetImportedOrCreateDecl(
ToFunction, D, Importer.getToContext(), DC, ToInnerLocStart,
NameInfo, T, TInfo, D->getStorageClass(), D->UsesFPIntrin(),
D->isInlineSpecified(), D->hasWrittenPrototype(),
D->getConstexprKind(), TrailingRequiresClause))
return ToFunction;
}
// Connect the redecl chain.
if (FoundByLookup) {
auto *Recent = const_cast<FunctionDecl *>(
FoundByLookup->getMostRecentDecl());
ToFunction->setPreviousDecl(Recent);
// FIXME Probably we should merge exception specifications. E.g. In the
// "To" context the existing function may have exception specification with
// noexcept-unevaluated, while the newly imported function may have an
// evaluated noexcept. A call to adjustExceptionSpec() on the imported
// decl and its redeclarations may be required.
}
StringLiteral *Msg = D->getDeletedMessage();
if (Msg) {
auto Imported = import(Msg);
if (!Imported)
return Imported.takeError();
Msg = *Imported;
}
ToFunction->setQualifierInfo(ToQualifierLoc);
ToFunction->setAccess(D->getAccess());
ToFunction->setLexicalDeclContext(LexicalDC);
ToFunction->setVirtualAsWritten(D->isVirtualAsWritten());
ToFunction->setTrivial(D->isTrivial());
ToFunction->setIsPureVirtual(D->isPureVirtual());
ToFunction->setDefaulted(D->isDefaulted());
ToFunction->setExplicitlyDefaulted(D->isExplicitlyDefaulted());
ToFunction->setDeletedAsWritten(D->isDeletedAsWritten());
ToFunction->setFriendConstraintRefersToEnclosingTemplate(
D->FriendConstraintRefersToEnclosingTemplate());
ToFunction->setRangeEnd(ToEndLoc);
ToFunction->setDefaultLoc(ToDefaultLoc);
if (Msg)
ToFunction->setDefaultedOrDeletedInfo(
FunctionDecl::DefaultedOrDeletedFunctionInfo::Create(
Importer.getToContext(), {}, Msg));
// Set the parameters.
for (auto *Param : Parameters) {
Param->setOwningFunction(ToFunction);
ToFunction->addDeclInternal(Param);
if (ASTImporterLookupTable *LT = Importer.SharedState->getLookupTable())
LT->update(Param, Importer.getToContext().getTranslationUnitDecl());
}
ToFunction->setParams(Parameters);
// We need to complete creation of FunctionProtoTypeLoc manually with setting
// params it refers to.
if (TInfo) {
if (auto ProtoLoc =
TInfo->getTypeLoc().IgnoreParens().getAs<FunctionProtoTypeLoc>()) {
for (unsigned I = 0, N = Parameters.size(); I != N; ++I)
ProtoLoc.setParam(I, Parameters[I]);
}
}
// Import the describing template function, if any.
if (FromFT) {
auto ToFTOrErr = import(FromFT);
if (!ToFTOrErr)
return ToFTOrErr.takeError();
}
// Import Ctor initializers.
if (auto *FromConstructor = dyn_cast<CXXConstructorDecl>(D)) {
if (unsigned NumInitializers = FromConstructor->getNumCtorInitializers()) {
SmallVector<CXXCtorInitializer *, 4> CtorInitializers(NumInitializers);
// Import first, then allocate memory and copy if there was no error.
if (Error Err = ImportContainerChecked(
FromConstructor->inits(), CtorInitializers))
return std::move(Err);
auto **Memory =
new (Importer.getToContext()) CXXCtorInitializer *[NumInitializers];
std::copy(CtorInitializers.begin(), CtorInitializers.end(), Memory);
auto *ToCtor = cast<CXXConstructorDecl>(ToFunction);
ToCtor->setCtorInitializers(Memory);
ToCtor->setNumCtorInitializers(NumInitializers);
}
}
// If it is a template, import all related things.
if (Error Err = ImportTemplateInformation(D, ToFunction))
return std::move(Err);
if (auto *FromCXXMethod = dyn_cast<CXXMethodDecl>(D))
if (Error Err = ImportOverriddenMethods(cast<CXXMethodDecl>(ToFunction),
FromCXXMethod))
return std::move(Err);
if (D->doesThisDeclarationHaveABody()) {
Error Err = ImportFunctionDeclBody(D, ToFunction);
if (Err)
return std::move(Err);
}
// Import and set the original type in case we used another type.
if (UsedDifferentProtoType) {
if (ExpectedType TyOrErr = import(D->getType()))
ToFunction->setType(*TyOrErr);
else
return TyOrErr.takeError();
if (Expected<TypeSourceInfo *> TSIOrErr = import(D->getTypeSourceInfo()))
ToFunction->setTypeSourceInfo(*TSIOrErr);
else
return TSIOrErr.takeError();
}
// FIXME: Other bits to merge?
addDeclToContexts(D, ToFunction);
// Import the rest of the chain. I.e. import all subsequent declarations.
for (++RedeclIt; RedeclIt != Redecls.end(); ++RedeclIt) {
ExpectedDecl ToRedeclOrErr = import(*RedeclIt);
if (!ToRedeclOrErr)
return ToRedeclOrErr.takeError();
}
return ToFunction;
}
ExpectedDecl ASTNodeImporter::VisitCXXMethodDecl(CXXMethodDecl *D) {
return VisitFunctionDecl(D);
}
ExpectedDecl ASTNodeImporter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
return VisitCXXMethodDecl(D);
}
ExpectedDecl ASTNodeImporter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
return VisitCXXMethodDecl(D);
}
ExpectedDecl ASTNodeImporter::VisitCXXConversionDecl(CXXConversionDecl *D) {
return VisitCXXMethodDecl(D);
}
ExpectedDecl
ASTNodeImporter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
return VisitFunctionDecl(D);
}
ExpectedDecl ASTNodeImporter::VisitFieldDecl(FieldDecl *D) {
// Import the major distinguishing characteristics of a variable.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Determine whether we've already imported this field.
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (FieldDecl *FoundField = dyn_cast<FieldDecl>(FoundDecl)) {
// For anonymous fields, match up by index.
if (!Name &&
ASTImporter::getFieldIndex(D) !=
ASTImporter::getFieldIndex(FoundField))
continue;
if (Importer.IsStructurallyEquivalent(D->getType(),
FoundField->getType())) {
Importer.MapImported(D, FoundField);
// In case of a FieldDecl of a ClassTemplateSpecializationDecl, the
// initializer of a FieldDecl might not had been instantiated in the
// "To" context. However, the "From" context might instantiated that,
// thus we have to merge that.
// Note: `hasInClassInitializer()` is not the same as non-null
// `getInClassInitializer()` value.
if (Expr *FromInitializer = D->getInClassInitializer()) {
if (ExpectedExpr ToInitializerOrErr = import(FromInitializer)) {
// Import of the FromInitializer may result in the setting of
// InClassInitializer. If not, set it here.
assert(FoundField->hasInClassInitializer() &&
"Field should have an in-class initializer if it has an "
"expression for it.");
if (!FoundField->getInClassInitializer())
FoundField->setInClassInitializer(*ToInitializerOrErr);
} else {
return ToInitializerOrErr.takeError();
}
}
return FoundField;
}
// FIXME: Why is this case not handled with calling HandleNameConflict?
Importer.ToDiag(Loc, diag::warn_odr_field_type_inconsistent)
<< Name << D->getType() << FoundField->getType();
Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here)
<< FoundField->getType();
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
}
Error Err = Error::success();
auto ToType = importChecked(Err, D->getType());
auto ToTInfo = importChecked(Err, D->getTypeSourceInfo());
auto ToBitWidth = importChecked(Err, D->getBitWidth());
auto ToInnerLocStart = importChecked(Err, D->getInnerLocStart());
if (Err)
return std::move(Err);
const Type *ToCapturedVLAType = nullptr;
if (Error Err = Importer.importInto(
ToCapturedVLAType, cast_or_null<Type>(D->getCapturedVLAType())))
return std::move(Err);
FieldDecl *ToField;
if (GetImportedOrCreateDecl(ToField, D, Importer.getToContext(), DC,
ToInnerLocStart, Loc, Name.getAsIdentifierInfo(),
ToType, ToTInfo, ToBitWidth, D->isMutable(),
D->getInClassInitStyle()))
return ToField;
// We need [[no_unqiue_address]] attributes to be added to FieldDecl, before
// we add fields in CXXRecordDecl::addedMember, otherwise record will be
// marked as having non-zero size.
Err = Importer.ImportAttrs(ToField, D);
if (Err)
return std::move(Err);
ToField->setAccess(D->getAccess());
ToField->setLexicalDeclContext(LexicalDC);
ToField->setImplicit(D->isImplicit());
if (ToCapturedVLAType)
ToField->setCapturedVLAType(cast<VariableArrayType>(ToCapturedVLAType));
LexicalDC->addDeclInternal(ToField);
// Import initializer only after the field was created, it may have recursive
// reference to the field.
auto ToInitializer = importChecked(Err, D->getInClassInitializer());
if (Err)
return std::move(Err);
if (ToInitializer) {
auto *AlreadyImported = ToField->getInClassInitializer();
if (AlreadyImported)
assert(ToInitializer == AlreadyImported &&
"Duplicate import of in-class initializer.");
else
ToField->setInClassInitializer(ToInitializer);
}
return ToField;
}
ExpectedDecl ASTNodeImporter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
// Import the major distinguishing characteristics of a variable.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Determine whether we've already imported this field.
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (unsigned I = 0, N = FoundDecls.size(); I != N; ++I) {
if (auto *FoundField = dyn_cast<IndirectFieldDecl>(FoundDecls[I])) {
// For anonymous indirect fields, match up by index.
if (!Name &&
ASTImporter::getFieldIndex(D) !=
ASTImporter::getFieldIndex(FoundField))
continue;
if (Importer.IsStructurallyEquivalent(D->getType(),
FoundField->getType(),
!Name.isEmpty())) {
Importer.MapImported(D, FoundField);
return FoundField;
}
// If there are more anonymous fields to check, continue.
if (!Name && I < N-1)
continue;
// FIXME: Why is this case not handled with calling HandleNameConflict?
Importer.ToDiag(Loc, diag::warn_odr_field_type_inconsistent)
<< Name << D->getType() << FoundField->getType();
Importer.ToDiag(FoundField->getLocation(), diag::note_odr_value_here)
<< FoundField->getType();
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
}
// Import the type.
auto TypeOrErr = import(D->getType());
if (!TypeOrErr)
return TypeOrErr.takeError();
auto **NamedChain =
new (Importer.getToContext()) NamedDecl*[D->getChainingSize()];
unsigned i = 0;
for (auto *PI : D->chain())
if (Expected<NamedDecl *> ToD = import(PI))
NamedChain[i++] = *ToD;
else
return ToD.takeError();
llvm::MutableArrayRef<NamedDecl *> CH = {NamedChain, D->getChainingSize()};
IndirectFieldDecl *ToIndirectField;
if (GetImportedOrCreateDecl(ToIndirectField, D, Importer.getToContext(), DC,
Loc, Name.getAsIdentifierInfo(), *TypeOrErr, CH))
// FIXME here we leak `NamedChain` which is allocated before
return ToIndirectField;
ToIndirectField->setAccess(D->getAccess());
ToIndirectField->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToIndirectField);
return ToIndirectField;
}
/// Used as return type of getFriendCountAndPosition.
struct FriendCountAndPosition {
/// Number of similar looking friends.
unsigned int TotalCount;
/// Index of the specific FriendDecl.
unsigned int IndexOfDecl;
};
static bool IsEquivalentFriend(ASTImporter &Importer, FriendDecl *FD1,
FriendDecl *FD2) {
if ((!FD1->getFriendType()) != (!FD2->getFriendType()))
return false;
if (const TypeSourceInfo *TSI = FD1->getFriendType())
return Importer.IsStructurallyEquivalent(
TSI->getType(), FD2->getFriendType()->getType(), /*Complain=*/false);
ASTImporter::NonEquivalentDeclSet NonEquivalentDecls;
StructuralEquivalenceContext Ctx(
FD1->getASTContext(), FD2->getASTContext(), NonEquivalentDecls,
StructuralEquivalenceKind::Default,
/* StrictTypeSpelling = */ false, /* Complain = */ false);
return Ctx.IsEquivalent(FD1, FD2);
}
static FriendCountAndPosition getFriendCountAndPosition(ASTImporter &Importer,
FriendDecl *FD) {
unsigned int FriendCount = 0;
std::optional<unsigned int> FriendPosition;
const auto *RD = cast<CXXRecordDecl>(FD->getLexicalDeclContext());
for (FriendDecl *FoundFriend : RD->friends()) {
if (FoundFriend == FD) {
FriendPosition = FriendCount;
++FriendCount;
} else if (IsEquivalentFriend(Importer, FD, FoundFriend)) {
++FriendCount;
}
}
assert(FriendPosition && "Friend decl not found in own parent.");
return {FriendCount, *FriendPosition};
}
ExpectedDecl ASTNodeImporter::VisitFriendDecl(FriendDecl *D) {
// Import the major distinguishing characteristics of a declaration.
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
// Determine whether we've already imported this decl.
// FriendDecl is not a NamedDecl so we cannot use lookup.
// We try to maintain order and count of redundant friend declarations.
const auto *RD = cast<CXXRecordDecl>(DC);
SmallVector<FriendDecl *, 2> ImportedEquivalentFriends;
for (FriendDecl *ImportedFriend : RD->friends())
if (IsEquivalentFriend(Importer, D, ImportedFriend))
ImportedEquivalentFriends.push_back(ImportedFriend);
FriendCountAndPosition CountAndPosition =
getFriendCountAndPosition(Importer, D);
assert(ImportedEquivalentFriends.size() <= CountAndPosition.TotalCount &&
"Class with non-matching friends is imported, ODR check wrong?");
if (ImportedEquivalentFriends.size() == CountAndPosition.TotalCount)
return Importer.MapImported(
D, ImportedEquivalentFriends[CountAndPosition.IndexOfDecl]);
// Not found. Create it.
// The declarations will be put into order later by ImportDeclContext.
FriendDecl::FriendUnion ToFU;
if (NamedDecl *FriendD = D->getFriendDecl()) {
NamedDecl *ToFriendD;
if (Error Err = importInto(ToFriendD, FriendD))
return std::move(Err);
if (FriendD->getFriendObjectKind() != Decl::FOK_None &&
!(FriendD->isInIdentifierNamespace(Decl::IDNS_NonMemberOperator)))
ToFriendD->setObjectOfFriendDecl(false);
ToFU = ToFriendD;
} else { // The friend is a type, not a decl.
if (auto TSIOrErr = import(D->getFriendType()))
ToFU = *TSIOrErr;
else
return TSIOrErr.takeError();
}
SmallVector<TemplateParameterList *, 1> ToTPLists(D->NumTPLists);
auto **FromTPLists = D->getTrailingObjects<TemplateParameterList *>();
for (unsigned I = 0; I < D->NumTPLists; I++) {
if (auto ListOrErr = import(FromTPLists[I]))
ToTPLists[I] = *ListOrErr;
else
return ListOrErr.takeError();
}
auto LocationOrErr = import(D->getLocation());
if (!LocationOrErr)
return LocationOrErr.takeError();
auto FriendLocOrErr = import(D->getFriendLoc());
if (!FriendLocOrErr)
return FriendLocOrErr.takeError();
FriendDecl *FrD;
if (GetImportedOrCreateDecl(FrD, D, Importer.getToContext(), DC,
*LocationOrErr, ToFU,
*FriendLocOrErr, ToTPLists))
return FrD;
FrD->setAccess(D->getAccess());
FrD->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(FrD);
return FrD;
}
ExpectedDecl ASTNodeImporter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
// Import the major distinguishing characteristics of an ivar.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Determine whether we've already imported this ivar
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (ObjCIvarDecl *FoundIvar = dyn_cast<ObjCIvarDecl>(FoundDecl)) {
if (Importer.IsStructurallyEquivalent(D->getType(),
FoundIvar->getType())) {
Importer.MapImported(D, FoundIvar);
return FoundIvar;
}
Importer.ToDiag(Loc, diag::warn_odr_ivar_type_inconsistent)
<< Name << D->getType() << FoundIvar->getType();
Importer.ToDiag(FoundIvar->getLocation(), diag::note_odr_value_here)
<< FoundIvar->getType();
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
}
Error Err = Error::success();
auto ToType = importChecked(Err, D->getType());
auto ToTypeSourceInfo = importChecked(Err, D->getTypeSourceInfo());
auto ToBitWidth = importChecked(Err, D->getBitWidth());
auto ToInnerLocStart = importChecked(Err, D->getInnerLocStart());
if (Err)
return std::move(Err);
ObjCIvarDecl *ToIvar;
if (GetImportedOrCreateDecl(
ToIvar, D, Importer.getToContext(), cast<ObjCContainerDecl>(DC),
ToInnerLocStart, Loc, Name.getAsIdentifierInfo(),
ToType, ToTypeSourceInfo,
D->getAccessControl(),ToBitWidth, D->getSynthesize()))
return ToIvar;
ToIvar->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToIvar);
return ToIvar;
}
ExpectedDecl ASTNodeImporter::VisitVarDecl(VarDecl *D) {
SmallVector<Decl*, 2> Redecls = getCanonicalForwardRedeclChain(D);
auto RedeclIt = Redecls.begin();
// Import the first part of the decl chain. I.e. import all previous
// declarations starting from the canonical decl.
for (; RedeclIt != Redecls.end() && *RedeclIt != D; ++RedeclIt) {
ExpectedDecl RedeclOrErr = import(*RedeclIt);
if (!RedeclOrErr)
return RedeclOrErr.takeError();
}
assert(*RedeclIt == D);
// Import the major distinguishing characteristics of a variable.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Try to find a variable in our own ("to") context with the same name and
// in the same context as the variable we're importing.
VarDecl *FoundByLookup = nullptr;
if (D->isFileVarDecl()) {
SmallVector<NamedDecl *, 4> ConflictingDecls;
unsigned IDNS = Decl::IDNS_Ordinary;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(IDNS))
continue;
if (auto *FoundVar = dyn_cast<VarDecl>(FoundDecl)) {
if (!hasSameVisibilityContextAndLinkage(FoundVar, D))
continue;
if (Importer.IsStructurallyEquivalent(D->getType(),
FoundVar->getType())) {
// The VarDecl in the "From" context has a definition, but in the
// "To" context we already have a definition.
VarDecl *FoundDef = FoundVar->getDefinition();
if (D->isThisDeclarationADefinition() && FoundDef)
// FIXME Check for ODR error if the two definitions have
// different initializers?
return Importer.MapImported(D, FoundDef);
// The VarDecl in the "From" context has an initializer, but in the
// "To" context we already have an initializer.
const VarDecl *FoundDInit = nullptr;
if (D->getInit() && FoundVar->getAnyInitializer(FoundDInit))
// FIXME Diagnose ODR error if the two initializers are different?
return Importer.MapImported(D, const_cast<VarDecl*>(FoundDInit));
FoundByLookup = FoundVar;
break;
}
const ArrayType *FoundArray
= Importer.getToContext().getAsArrayType(FoundVar->getType());
const ArrayType *TArray
= Importer.getToContext().getAsArrayType(D->getType());
if (FoundArray && TArray) {
if (isa<IncompleteArrayType>(FoundArray) &&
isa<ConstantArrayType>(TArray)) {
// Import the type.
if (auto TyOrErr = import(D->getType()))
FoundVar->setType(*TyOrErr);
else
return TyOrErr.takeError();
FoundByLookup = FoundVar;
break;
} else if (isa<IncompleteArrayType>(TArray) &&
isa<ConstantArrayType>(FoundArray)) {
FoundByLookup = FoundVar;
break;
}
}
Importer.ToDiag(Loc, diag::warn_odr_variable_type_inconsistent)
<< Name << D->getType() << FoundVar->getType();
Importer.ToDiag(FoundVar->getLocation(), diag::note_odr_value_here)
<< FoundVar->getType();
ConflictingDecls.push_back(FoundDecl);
}
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
Name, DC, IDNS, ConflictingDecls.data(), ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
Error Err = Error::success();
auto ToType = importChecked(Err, D->getType());
auto ToTypeSourceInfo = importChecked(Err, D->getTypeSourceInfo());
auto ToInnerLocStart = importChecked(Err, D->getInnerLocStart());
auto ToQualifierLoc = importChecked(Err, D->getQualifierLoc());
if (Err)
return std::move(Err);
VarDecl *ToVar;
if (auto *FromDecomp = dyn_cast<DecompositionDecl>(D)) {
SmallVector<BindingDecl *> Bindings(FromDecomp->bindings().size());
if (Error Err =
ImportArrayChecked(FromDecomp->bindings(), Bindings.begin()))
return std::move(Err);
DecompositionDecl *ToDecomp;
if (GetImportedOrCreateDecl(
ToDecomp, FromDecomp, Importer.getToContext(), DC, ToInnerLocStart,
Loc, ToType, ToTypeSourceInfo, D->getStorageClass(), Bindings))
return ToDecomp;
ToVar = ToDecomp;
} else {
// Create the imported variable.
if (GetImportedOrCreateDecl(ToVar, D, Importer.getToContext(), DC,
ToInnerLocStart, Loc,
Name.getAsIdentifierInfo(), ToType,
ToTypeSourceInfo, D->getStorageClass()))
return ToVar;
}
ToVar->setTSCSpec(D->getTSCSpec());
ToVar->setQualifierInfo(ToQualifierLoc);
ToVar->setAccess(D->getAccess());
ToVar->setLexicalDeclContext(LexicalDC);
if (D->isInlineSpecified())
ToVar->setInlineSpecified();
if (D->isInline())
ToVar->setImplicitlyInline();
if (FoundByLookup) {
auto *Recent = const_cast<VarDecl *>(FoundByLookup->getMostRecentDecl());
ToVar->setPreviousDecl(Recent);
}
// Import the described template, if any.
if (D->getDescribedVarTemplate()) {
auto ToVTOrErr = import(D->getDescribedVarTemplate());
if (!ToVTOrErr)
return ToVTOrErr.takeError();
} else if (MemberSpecializationInfo *MSI = D->getMemberSpecializationInfo()) {
TemplateSpecializationKind SK = MSI->getTemplateSpecializationKind();
VarDecl *FromInst = D->getInstantiatedFromStaticDataMember();
if (Expected<VarDecl *> ToInstOrErr = import(FromInst))
ToVar->setInstantiationOfStaticDataMember(*ToInstOrErr, SK);
else
return ToInstOrErr.takeError();
if (ExpectedSLoc POIOrErr = import(MSI->getPointOfInstantiation()))
ToVar->getMemberSpecializationInfo()->setPointOfInstantiation(*POIOrErr);
else
return POIOrErr.takeError();
}
if (Error Err = ImportInitializer(D, ToVar))
return std::move(Err);
if (D->isConstexpr())
ToVar->setConstexpr(true);
addDeclToContexts(D, ToVar);
// Import the rest of the chain. I.e. import all subsequent declarations.
for (++RedeclIt; RedeclIt != Redecls.end(); ++RedeclIt) {
ExpectedDecl RedeclOrErr = import(*RedeclIt);
if (!RedeclOrErr)
return RedeclOrErr.takeError();
}
return ToVar;
}
ExpectedDecl ASTNodeImporter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
// Parameters are created in the translation unit's context, then moved
// into the function declaration's context afterward.
DeclContext *DC = Importer.getToContext().getTranslationUnitDecl();
Error Err = Error::success();
auto ToDeclName = importChecked(Err, D->getDeclName());
auto ToLocation = importChecked(Err, D->getLocation());
auto ToType = importChecked(Err, D->getType());
if (Err)
return std::move(Err);
// Create the imported parameter.
ImplicitParamDecl *ToParm = nullptr;
if (GetImportedOrCreateDecl(ToParm, D, Importer.getToContext(), DC,
ToLocation, ToDeclName.getAsIdentifierInfo(),
ToType, D->getParameterKind()))
return ToParm;
return ToParm;
}
Error ASTNodeImporter::ImportDefaultArgOfParmVarDecl(
const ParmVarDecl *FromParam, ParmVarDecl *ToParam) {
ToParam->setHasInheritedDefaultArg(FromParam->hasInheritedDefaultArg());
ToParam->setExplicitObjectParameterLoc(
FromParam->getExplicitObjectParamThisLoc());
ToParam->setKNRPromoted(FromParam->isKNRPromoted());
if (FromParam->hasUninstantiatedDefaultArg()) {
if (auto ToDefArgOrErr = import(FromParam->getUninstantiatedDefaultArg()))
ToParam->setUninstantiatedDefaultArg(*ToDefArgOrErr);
else
return ToDefArgOrErr.takeError();
} else if (FromParam->hasUnparsedDefaultArg()) {
ToParam->setUnparsedDefaultArg();
} else if (FromParam->hasDefaultArg()) {
if (auto ToDefArgOrErr = import(FromParam->getDefaultArg()))
ToParam->setDefaultArg(*ToDefArgOrErr);
else
return ToDefArgOrErr.takeError();
}
return Error::success();
}
Expected<InheritedConstructor>
ASTNodeImporter::ImportInheritedConstructor(const InheritedConstructor &From) {
Error Err = Error::success();
CXXConstructorDecl *ToBaseCtor = importChecked(Err, From.getConstructor());
ConstructorUsingShadowDecl *ToShadow =
importChecked(Err, From.getShadowDecl());
if (Err)
return std::move(Err);
return InheritedConstructor(ToShadow, ToBaseCtor);
}
ExpectedDecl ASTNodeImporter::VisitParmVarDecl(ParmVarDecl *D) {
// Parameters are created in the translation unit's context, then moved
// into the function declaration's context afterward.
DeclContext *DC = Importer.getToContext().getTranslationUnitDecl();
Error Err = Error::success();
auto ToDeclName = importChecked(Err, D->getDeclName());
auto ToLocation = importChecked(Err, D->getLocation());
auto ToInnerLocStart = importChecked(Err, D->getInnerLocStart());
auto ToType = importChecked(Err, D->getType());
auto ToTypeSourceInfo = importChecked(Err, D->getTypeSourceInfo());
if (Err)
return std::move(Err);
ParmVarDecl *ToParm;
if (GetImportedOrCreateDecl(ToParm, D, Importer.getToContext(), DC,
ToInnerLocStart, ToLocation,
ToDeclName.getAsIdentifierInfo(), ToType,
ToTypeSourceInfo, D->getStorageClass(),
/*DefaultArg*/ nullptr))
return ToParm;
// Set the default argument. It should be no problem if it was already done.
// Do not import the default expression before GetImportedOrCreateDecl call
// to avoid possible infinite import loop because circular dependency.
if (Error Err = ImportDefaultArgOfParmVarDecl(D, ToParm))
return std::move(Err);
if (D->isObjCMethodParameter()) {
ToParm->setObjCMethodScopeInfo(D->getFunctionScopeIndex());
ToParm->setObjCDeclQualifier(D->getObjCDeclQualifier());
} else {
ToParm->setScopeInfo(D->getFunctionScopeDepth(),
D->getFunctionScopeIndex());
}
return ToParm;
}
ExpectedDecl ASTNodeImporter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
// Import the major distinguishing characteristics of a method.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (auto *FoundMethod = dyn_cast<ObjCMethodDecl>(FoundDecl)) {
if (FoundMethod->isInstanceMethod() != D->isInstanceMethod())
continue;
// Check return types.
if (!Importer.IsStructurallyEquivalent(D->getReturnType(),
FoundMethod->getReturnType())) {
Importer.ToDiag(Loc, diag::warn_odr_objc_method_result_type_inconsistent)
<< D->isInstanceMethod() << Name << D->getReturnType()
<< FoundMethod->getReturnType();
Importer.ToDiag(FoundMethod->getLocation(),
diag::note_odr_objc_method_here)
<< D->isInstanceMethod() << Name;
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
// Check the number of parameters.
if (D->param_size() != FoundMethod->param_size()) {
Importer.ToDiag(Loc, diag::warn_odr_objc_method_num_params_inconsistent)
<< D->isInstanceMethod() << Name
<< D->param_size() << FoundMethod->param_size();
Importer.ToDiag(FoundMethod->getLocation(),
diag::note_odr_objc_method_here)
<< D->isInstanceMethod() << Name;
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
// Check parameter types.
for (ObjCMethodDecl::param_iterator P = D->param_begin(),
PEnd = D->param_end(), FoundP = FoundMethod->param_begin();
P != PEnd; ++P, ++FoundP) {
if (!Importer.IsStructurallyEquivalent((*P)->getType(),
(*FoundP)->getType())) {
Importer.FromDiag((*P)->getLocation(),
diag::warn_odr_objc_method_param_type_inconsistent)
<< D->isInstanceMethod() << Name
<< (*P)->getType() << (*FoundP)->getType();
Importer.ToDiag((*FoundP)->getLocation(), diag::note_odr_value_here)
<< (*FoundP)->getType();
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
}
// Check variadic/non-variadic.
// Check the number of parameters.
if (D->isVariadic() != FoundMethod->isVariadic()) {
Importer.ToDiag(Loc, diag::warn_odr_objc_method_variadic_inconsistent)
<< D->isInstanceMethod() << Name;
Importer.ToDiag(FoundMethod->getLocation(),
diag::note_odr_objc_method_here)
<< D->isInstanceMethod() << Name;
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
// FIXME: Any other bits we need to merge?
return Importer.MapImported(D, FoundMethod);
}
}
Error Err = Error::success();
auto ToEndLoc = importChecked(Err, D->getEndLoc());
auto ToReturnType = importChecked(Err, D->getReturnType());
auto ToReturnTypeSourceInfo =
importChecked(Err, D->getReturnTypeSourceInfo());
if (Err)
return std::move(Err);
ObjCMethodDecl *ToMethod;
if (GetImportedOrCreateDecl(
ToMethod, D, Importer.getToContext(), Loc, ToEndLoc,
Name.getObjCSelector(), ToReturnType, ToReturnTypeSourceInfo, DC,
D->isInstanceMethod(), D->isVariadic(), D->isPropertyAccessor(),
D->isSynthesizedAccessorStub(), D->isImplicit(), D->isDefined(),
D->getImplementationControl(), D->hasRelatedResultType()))
return ToMethod;
// FIXME: When we decide to merge method definitions, we'll need to
// deal with implicit parameters.
// Import the parameters
SmallVector<ParmVarDecl *, 5> ToParams;
for (auto *FromP : D->parameters()) {
if (Expected<ParmVarDecl *> ToPOrErr = import(FromP))
ToParams.push_back(*ToPOrErr);
else
return ToPOrErr.takeError();
}
// Set the parameters.
for (auto *ToParam : ToParams) {
ToParam->setOwningFunction(ToMethod);
ToMethod->addDeclInternal(ToParam);
}
SmallVector<SourceLocation, 12> FromSelLocs;
D->getSelectorLocs(FromSelLocs);
SmallVector<SourceLocation, 12> ToSelLocs(FromSelLocs.size());
if (Error Err = ImportContainerChecked(FromSelLocs, ToSelLocs))
return std::move(Err);
ToMethod->setMethodParams(Importer.getToContext(), ToParams, ToSelLocs);
ToMethod->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToMethod);
// Implicit params are declared when Sema encounters the definition but this
// never happens when the method is imported. Manually declare the implicit
// params now that the MethodDecl knows its class interface.
if (D->getSelfDecl())
ToMethod->createImplicitParams(Importer.getToContext(),
ToMethod->getClassInterface());
return ToMethod;
}
ExpectedDecl ASTNodeImporter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
// Import the major distinguishing characteristics of a category.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
Error Err = Error::success();
auto ToVarianceLoc = importChecked(Err, D->getVarianceLoc());
auto ToLocation = importChecked(Err, D->getLocation());
auto ToColonLoc = importChecked(Err, D->getColonLoc());
auto ToTypeSourceInfo = importChecked(Err, D->getTypeSourceInfo());
if (Err)
return std::move(Err);
ObjCTypeParamDecl *Result;
if (GetImportedOrCreateDecl(
Result, D, Importer.getToContext(), DC, D->getVariance(),
ToVarianceLoc, D->getIndex(),
ToLocation, Name.getAsIdentifierInfo(),
ToColonLoc, ToTypeSourceInfo))
return Result;
// Only import 'ObjCTypeParamType' after the decl is created.
auto ToTypeForDecl = importChecked(Err, D->getTypeForDecl());
if (Err)
return std::move(Err);
Result->setTypeForDecl(ToTypeForDecl);
Result->setLexicalDeclContext(LexicalDC);
return Result;
}
ExpectedDecl ASTNodeImporter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
// Import the major distinguishing characteristics of a category.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
ObjCInterfaceDecl *ToInterface;
if (Error Err = importInto(ToInterface, D->getClassInterface()))
return std::move(Err);
// Determine if we've already encountered this category.
ObjCCategoryDecl *MergeWithCategory
= ToInterface->FindCategoryDeclaration(Name.getAsIdentifierInfo());
ObjCCategoryDecl *ToCategory = MergeWithCategory;
if (!ToCategory) {
Error Err = Error::success();
auto ToAtStartLoc = importChecked(Err, D->getAtStartLoc());
auto ToCategoryNameLoc = importChecked(Err, D->getCategoryNameLoc());
auto ToIvarLBraceLoc = importChecked(Err, D->getIvarLBraceLoc());
auto ToIvarRBraceLoc = importChecked(Err, D->getIvarRBraceLoc());
if (Err)
return std::move(Err);
if (GetImportedOrCreateDecl(ToCategory, D, Importer.getToContext(), DC,
ToAtStartLoc, Loc,
ToCategoryNameLoc,
Name.getAsIdentifierInfo(), ToInterface,
/*TypeParamList=*/nullptr,
ToIvarLBraceLoc,
ToIvarRBraceLoc))
return ToCategory;
ToCategory->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToCategory);
// Import the type parameter list after MapImported, to avoid
// loops when bringing in their DeclContext.
if (auto PListOrErr = ImportObjCTypeParamList(D->getTypeParamList()))
ToCategory->setTypeParamList(*PListOrErr);
else
return PListOrErr.takeError();
// Import protocols
SmallVector<ObjCProtocolDecl *, 4> Protocols;
SmallVector<SourceLocation, 4> ProtocolLocs;
ObjCCategoryDecl::protocol_loc_iterator FromProtoLoc
= D->protocol_loc_begin();
for (ObjCCategoryDecl::protocol_iterator FromProto = D->protocol_begin(),
FromProtoEnd = D->protocol_end();
FromProto != FromProtoEnd;
++FromProto, ++FromProtoLoc) {
if (Expected<ObjCProtocolDecl *> ToProtoOrErr = import(*FromProto))
Protocols.push_back(*ToProtoOrErr);
else
return ToProtoOrErr.takeError();
if (ExpectedSLoc ToProtoLocOrErr = import(*FromProtoLoc))
ProtocolLocs.push_back(*ToProtoLocOrErr);
else
return ToProtoLocOrErr.takeError();
}
// FIXME: If we're merging, make sure that the protocol list is the same.
ToCategory->setProtocolList(Protocols.data(), Protocols.size(),
ProtocolLocs.data(), Importer.getToContext());
} else {
Importer.MapImported(D, ToCategory);
}
// Import all of the members of this category.
if (Error Err = ImportDeclContext(D))
return std::move(Err);
// If we have an implementation, import it as well.
if (D->getImplementation()) {
if (Expected<ObjCCategoryImplDecl *> ToImplOrErr =
import(D->getImplementation()))
ToCategory->setImplementation(*ToImplOrErr);
else
return ToImplOrErr.takeError();
}
return ToCategory;
}
Error ASTNodeImporter::ImportDefinition(
ObjCProtocolDecl *From, ObjCProtocolDecl *To, ImportDefinitionKind Kind) {
if (To->getDefinition()) {
if (shouldForceImportDeclContext(Kind))
if (Error Err = ImportDeclContext(From))
return Err;
return Error::success();
}
// Start the protocol definition
To->startDefinition();
// Import protocols
SmallVector<ObjCProtocolDecl *, 4> Protocols;
SmallVector<SourceLocation, 4> ProtocolLocs;
ObjCProtocolDecl::protocol_loc_iterator FromProtoLoc =
From->protocol_loc_begin();
for (ObjCProtocolDecl::protocol_iterator FromProto = From->protocol_begin(),
FromProtoEnd = From->protocol_end();
FromProto != FromProtoEnd;
++FromProto, ++FromProtoLoc) {
if (Expected<ObjCProtocolDecl *> ToProtoOrErr = import(*FromProto))
Protocols.push_back(*ToProtoOrErr);
else
return ToProtoOrErr.takeError();
if (ExpectedSLoc ToProtoLocOrErr = import(*FromProtoLoc))
ProtocolLocs.push_back(*ToProtoLocOrErr);
else
return ToProtoLocOrErr.takeError();
}
// FIXME: If we're merging, make sure that the protocol list is the same.
To->setProtocolList(Protocols.data(), Protocols.size(),
ProtocolLocs.data(), Importer.getToContext());
if (shouldForceImportDeclContext(Kind)) {
// Import all of the members of this protocol.
if (Error Err = ImportDeclContext(From, /*ForceImport=*/true))
return Err;
}
return Error::success();
}
ExpectedDecl ASTNodeImporter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
// If this protocol 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.
ObjCProtocolDecl *Definition = D->getDefinition();
if (Definition && Definition != D) {
if (ExpectedDecl ImportedDefOrErr = import(Definition))
return Importer.MapImported(D, *ImportedDefOrErr);
else
return ImportedDefOrErr.takeError();
}
// Import the major distinguishing characteristics of a protocol.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
ObjCProtocolDecl *MergeWithProtocol = nullptr;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(Decl::IDNS_ObjCProtocol))
continue;
if ((MergeWithProtocol = dyn_cast<ObjCProtocolDecl>(FoundDecl)))
break;
}
ObjCProtocolDecl *ToProto = MergeWithProtocol;
if (!ToProto) {
auto ToAtBeginLocOrErr = import(D->getAtStartLoc());
if (!ToAtBeginLocOrErr)
return ToAtBeginLocOrErr.takeError();
if (GetImportedOrCreateDecl(ToProto, D, Importer.getToContext(), DC,
Name.getAsIdentifierInfo(), Loc,
*ToAtBeginLocOrErr,
/*PrevDecl=*/nullptr))
return ToProto;
ToProto->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToProto);
}
Importer.MapImported(D, ToProto);
if (D->isThisDeclarationADefinition())
if (Error Err = ImportDefinition(D, ToProto))
return std::move(Err);
return ToProto;
}
ExpectedDecl ASTNodeImporter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
ExpectedSLoc ExternLocOrErr = import(D->getExternLoc());
if (!ExternLocOrErr)
return ExternLocOrErr.takeError();
ExpectedSLoc LangLocOrErr = import(D->getLocation());
if (!LangLocOrErr)
return LangLocOrErr.takeError();
bool HasBraces = D->hasBraces();
LinkageSpecDecl *ToLinkageSpec;
if (GetImportedOrCreateDecl(ToLinkageSpec, D, Importer.getToContext(), DC,
*ExternLocOrErr, *LangLocOrErr,
D->getLanguage(), HasBraces))
return ToLinkageSpec;
if (HasBraces) {
ExpectedSLoc RBraceLocOrErr = import(D->getRBraceLoc());
if (!RBraceLocOrErr)
return RBraceLocOrErr.takeError();
ToLinkageSpec->setRBraceLoc(*RBraceLocOrErr);
}
ToLinkageSpec->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToLinkageSpec);
return ToLinkageSpec;
}
ExpectedDecl ASTNodeImporter::ImportUsingShadowDecls(BaseUsingDecl *D,
BaseUsingDecl *ToSI) {
for (UsingShadowDecl *FromShadow : D->shadows()) {
if (Expected<UsingShadowDecl *> ToShadowOrErr = import(FromShadow))
ToSI->addShadowDecl(*ToShadowOrErr);
else
// FIXME: We return error here but the definition is already created
// and available with lookups. How to fix this?..
return ToShadowOrErr.takeError();
}
return ToSI;
}
ExpectedDecl ASTNodeImporter::VisitUsingDecl(UsingDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD = nullptr;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
Error Err = Error::success();
auto ToLoc = importChecked(Err, D->getNameInfo().getLoc());
auto ToUsingLoc = importChecked(Err, D->getUsingLoc());
auto ToQualifierLoc = importChecked(Err, D->getQualifierLoc());
if (Err)
return std::move(Err);
DeclarationNameInfo NameInfo(Name, ToLoc);
if (Error Err = ImportDeclarationNameLoc(D->getNameInfo(), NameInfo))
return std::move(Err);
UsingDecl *ToUsing;
if (GetImportedOrCreateDecl(ToUsing, D, Importer.getToContext(), DC,
ToUsingLoc, ToQualifierLoc, NameInfo,
D->hasTypename()))
return ToUsing;
ToUsing->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToUsing);
if (NamedDecl *FromPattern =
Importer.getFromContext().getInstantiatedFromUsingDecl(D)) {
if (Expected<NamedDecl *> ToPatternOrErr = import(FromPattern))
Importer.getToContext().setInstantiatedFromUsingDecl(
ToUsing, *ToPatternOrErr);
else
return ToPatternOrErr.takeError();
}
return ImportUsingShadowDecls(D, ToUsing);
}
ExpectedDecl ASTNodeImporter::VisitUsingEnumDecl(UsingEnumDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD = nullptr;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
Error Err = Error::success();
auto ToUsingLoc = importChecked(Err, D->getUsingLoc());
auto ToEnumLoc = importChecked(Err, D->getEnumLoc());
auto ToNameLoc = importChecked(Err, D->getLocation());
auto *ToEnumType = importChecked(Err, D->getEnumType());
if (Err)
return std::move(Err);
UsingEnumDecl *ToUsingEnum;
if (GetImportedOrCreateDecl(ToUsingEnum, D, Importer.getToContext(), DC,
ToUsingLoc, ToEnumLoc, ToNameLoc, ToEnumType))
return ToUsingEnum;
ToUsingEnum->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToUsingEnum);
if (UsingEnumDecl *FromPattern =
Importer.getFromContext().getInstantiatedFromUsingEnumDecl(D)) {
if (Expected<UsingEnumDecl *> ToPatternOrErr = import(FromPattern))
Importer.getToContext().setInstantiatedFromUsingEnumDecl(ToUsingEnum,
*ToPatternOrErr);
else
return ToPatternOrErr.takeError();
}
return ImportUsingShadowDecls(D, ToUsingEnum);
}
ExpectedDecl ASTNodeImporter::VisitUsingShadowDecl(UsingShadowDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD = nullptr;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
Expected<BaseUsingDecl *> ToIntroducerOrErr = import(D->getIntroducer());
if (!ToIntroducerOrErr)
return ToIntroducerOrErr.takeError();
Expected<NamedDecl *> ToTargetOrErr = import(D->getTargetDecl());
if (!ToTargetOrErr)
return ToTargetOrErr.takeError();
UsingShadowDecl *ToShadow;
if (auto *FromConstructorUsingShadow =
dyn_cast<ConstructorUsingShadowDecl>(D)) {
Error Err = Error::success();
ConstructorUsingShadowDecl *Nominated = importChecked(
Err, FromConstructorUsingShadow->getNominatedBaseClassShadowDecl());
if (Err)
return std::move(Err);
// The 'Target' parameter of ConstructorUsingShadowDecl constructor
// is really the "NominatedBaseClassShadowDecl" value if it exists
// (see code of ConstructorUsingShadowDecl::ConstructorUsingShadowDecl).
// We should pass the NominatedBaseClassShadowDecl to it (if non-null) to
// get the correct values.
if (GetImportedOrCreateDecl<ConstructorUsingShadowDecl>(
ToShadow, D, Importer.getToContext(), DC, Loc,
cast<UsingDecl>(*ToIntroducerOrErr),
Nominated ? Nominated : *ToTargetOrErr,
FromConstructorUsingShadow->constructsVirtualBase()))
return ToShadow;
} else {
if (GetImportedOrCreateDecl(ToShadow, D, Importer.getToContext(), DC, Loc,
Name, *ToIntroducerOrErr, *ToTargetOrErr))
return ToShadow;
}
ToShadow->setLexicalDeclContext(LexicalDC);
ToShadow->setAccess(D->getAccess());
if (UsingShadowDecl *FromPattern =
Importer.getFromContext().getInstantiatedFromUsingShadowDecl(D)) {
if (Expected<UsingShadowDecl *> ToPatternOrErr = import(FromPattern))
Importer.getToContext().setInstantiatedFromUsingShadowDecl(
ToShadow, *ToPatternOrErr);
else
// FIXME: We return error here but the definition is already created
// and available with lookups. How to fix this?..
return ToPatternOrErr.takeError();
}
LexicalDC->addDeclInternal(ToShadow);
return ToShadow;
}
ExpectedDecl ASTNodeImporter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD = nullptr;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
auto ToComAncestorOrErr = Importer.ImportContext(D->getCommonAncestor());
if (!ToComAncestorOrErr)
return ToComAncestorOrErr.takeError();
Error Err = Error::success();
auto ToNominatedNamespace = importChecked(Err, D->getNominatedNamespace());
auto ToUsingLoc = importChecked(Err, D->getUsingLoc());
auto ToNamespaceKeyLocation =
importChecked(Err, D->getNamespaceKeyLocation());
auto ToQualifierLoc = importChecked(Err, D->getQualifierLoc());
auto ToIdentLocation = importChecked(Err, D->getIdentLocation());
if (Err)
return std::move(Err);
UsingDirectiveDecl *ToUsingDir;
if (GetImportedOrCreateDecl(ToUsingDir, D, Importer.getToContext(), DC,
ToUsingLoc,
ToNamespaceKeyLocation,
ToQualifierLoc,
ToIdentLocation,
ToNominatedNamespace, *ToComAncestorOrErr))
return ToUsingDir;
ToUsingDir->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToUsingDir);
return ToUsingDir;
}
ExpectedDecl ASTNodeImporter::VisitUsingPackDecl(UsingPackDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD = nullptr;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
auto ToInstantiatedFromUsingOrErr =
Importer.Import(D->getInstantiatedFromUsingDecl());
if (!ToInstantiatedFromUsingOrErr)
return ToInstantiatedFromUsingOrErr.takeError();
SmallVector<NamedDecl *, 4> Expansions(D->expansions().size());
if (Error Err = ImportArrayChecked(D->expansions(), Expansions.begin()))
return std::move(Err);
UsingPackDecl *ToUsingPack;
if (GetImportedOrCreateDecl(ToUsingPack, D, Importer.getToContext(), DC,
cast<NamedDecl>(*ToInstantiatedFromUsingOrErr),
Expansions))
return ToUsingPack;
addDeclToContexts(D, ToUsingPack);
return ToUsingPack;
}
ExpectedDecl ASTNodeImporter::VisitUnresolvedUsingValueDecl(
UnresolvedUsingValueDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD = nullptr;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
Error Err = Error::success();
auto ToLoc = importChecked(Err, D->getNameInfo().getLoc());
auto ToUsingLoc = importChecked(Err, D->getUsingLoc());
auto ToQualifierLoc = importChecked(Err, D->getQualifierLoc());
auto ToEllipsisLoc = importChecked(Err, D->getEllipsisLoc());
if (Err)
return std::move(Err);
DeclarationNameInfo NameInfo(Name, ToLoc);
if (Error Err = ImportDeclarationNameLoc(D->getNameInfo(), NameInfo))
return std::move(Err);
UnresolvedUsingValueDecl *ToUsingValue;
if (GetImportedOrCreateDecl(ToUsingValue, D, Importer.getToContext(), DC,
ToUsingLoc, ToQualifierLoc, NameInfo,
ToEllipsisLoc))
return ToUsingValue;
ToUsingValue->setAccess(D->getAccess());
ToUsingValue->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToUsingValue);
return ToUsingValue;
}
ExpectedDecl ASTNodeImporter::VisitUnresolvedUsingTypenameDecl(
UnresolvedUsingTypenameDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD = nullptr;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
Error Err = Error::success();
auto ToUsingLoc = importChecked(Err, D->getUsingLoc());
auto ToTypenameLoc = importChecked(Err, D->getTypenameLoc());
auto ToQualifierLoc = importChecked(Err, D->getQualifierLoc());
auto ToEllipsisLoc = importChecked(Err, D->getEllipsisLoc());
if (Err)
return std::move(Err);
UnresolvedUsingTypenameDecl *ToUsing;
if (GetImportedOrCreateDecl(ToUsing, D, Importer.getToContext(), DC,
ToUsingLoc, ToTypenameLoc,
ToQualifierLoc, Loc, Name, ToEllipsisLoc))
return ToUsing;
ToUsing->setAccess(D->getAccess());
ToUsing->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToUsing);
return ToUsing;
}
ExpectedDecl ASTNodeImporter::VisitBuiltinTemplateDecl(BuiltinTemplateDecl *D) {
Decl* ToD = nullptr;
switch (D->getBuiltinTemplateKind()) {
case BuiltinTemplateKind::BTK__make_integer_seq:
ToD = Importer.getToContext().getMakeIntegerSeqDecl();
break;
case BuiltinTemplateKind::BTK__type_pack_element:
ToD = Importer.getToContext().getTypePackElementDecl();
break;
}
assert(ToD && "BuiltinTemplateDecl of unsupported kind!");
Importer.MapImported(D, ToD);
return ToD;
}
Error ASTNodeImporter::ImportDefinition(
ObjCInterfaceDecl *From, ObjCInterfaceDecl *To, ImportDefinitionKind Kind) {
if (To->getDefinition()) {
// Check consistency of superclass.
ObjCInterfaceDecl *FromSuper = From->getSuperClass();
if (FromSuper) {
if (auto FromSuperOrErr = import(FromSuper))
FromSuper = *FromSuperOrErr;
else
return FromSuperOrErr.takeError();
}
ObjCInterfaceDecl *ToSuper = To->getSuperClass();
if ((bool)FromSuper != (bool)ToSuper ||
(FromSuper && !declaresSameEntity(FromSuper, ToSuper))) {
Importer.ToDiag(To->getLocation(),
diag::warn_odr_objc_superclass_inconsistent)
<< To->getDeclName();
if (ToSuper)
Importer.ToDiag(To->getSuperClassLoc(), diag::note_odr_objc_superclass)
<< To->getSuperClass()->getDeclName();
else
Importer.ToDiag(To->getLocation(),
diag::note_odr_objc_missing_superclass);
if (From->getSuperClass())
Importer.FromDiag(From->getSuperClassLoc(),
diag::note_odr_objc_superclass)
<< From->getSuperClass()->getDeclName();
else
Importer.FromDiag(From->getLocation(),
diag::note_odr_objc_missing_superclass);
}
if (shouldForceImportDeclContext(Kind))
if (Error Err = ImportDeclContext(From))
return Err;
return Error::success();
}
// Start the definition.
To->startDefinition();
// If this class has a superclass, import it.
if (From->getSuperClass()) {
if (auto SuperTInfoOrErr = import(From->getSuperClassTInfo()))
To->setSuperClass(*SuperTInfoOrErr);
else
return SuperTInfoOrErr.takeError();
}
// Import protocols
SmallVector<ObjCProtocolDecl *, 4> Protocols;
SmallVector<SourceLocation, 4> ProtocolLocs;
ObjCInterfaceDecl::protocol_loc_iterator FromProtoLoc =
From->protocol_loc_begin();
for (ObjCInterfaceDecl::protocol_iterator FromProto = From->protocol_begin(),
FromProtoEnd = From->protocol_end();
FromProto != FromProtoEnd;
++FromProto, ++FromProtoLoc) {
if (Expected<ObjCProtocolDecl *> ToProtoOrErr = import(*FromProto))
Protocols.push_back(*ToProtoOrErr);
else
return ToProtoOrErr.takeError();
if (ExpectedSLoc ToProtoLocOrErr = import(*FromProtoLoc))
ProtocolLocs.push_back(*ToProtoLocOrErr);
else
return ToProtoLocOrErr.takeError();
}
// FIXME: If we're merging, make sure that the protocol list is the same.
To->setProtocolList(Protocols.data(), Protocols.size(),
ProtocolLocs.data(), Importer.getToContext());
// Import categories. When the categories themselves are imported, they'll
// hook themselves into this interface.
for (auto *Cat : From->known_categories()) {
auto ToCatOrErr = import(Cat);
if (!ToCatOrErr)
return ToCatOrErr.takeError();
}
// If we have an @implementation, import it as well.
if (From->getImplementation()) {
if (Expected<ObjCImplementationDecl *> ToImplOrErr =
import(From->getImplementation()))
To->setImplementation(*ToImplOrErr);
else
return ToImplOrErr.takeError();
}
// Import all of the members of this class.
if (Error Err = ImportDeclContext(From, /*ForceImport=*/true))
return Err;
return Error::success();
}
Expected<ObjCTypeParamList *>
ASTNodeImporter::ImportObjCTypeParamList(ObjCTypeParamList *list) {
if (!list)
return nullptr;
SmallVector<ObjCTypeParamDecl *, 4> toTypeParams;
for (auto *fromTypeParam : *list) {
if (auto toTypeParamOrErr = import(fromTypeParam))
toTypeParams.push_back(*toTypeParamOrErr);
else
return toTypeParamOrErr.takeError();
}
auto LAngleLocOrErr = import(list->getLAngleLoc());
if (!LAngleLocOrErr)
return LAngleLocOrErr.takeError();
auto RAngleLocOrErr = import(list->getRAngleLoc());
if (!RAngleLocOrErr)
return RAngleLocOrErr.takeError();
return ObjCTypeParamList::create(Importer.getToContext(),
*LAngleLocOrErr,
toTypeParams,
*RAngleLocOrErr);
}
ExpectedDecl ASTNodeImporter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
// If this class 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.
ObjCInterfaceDecl *Definition = D->getDefinition();
if (Definition && Definition != D) {
if (ExpectedDecl ImportedDefOrErr = import(Definition))
return Importer.MapImported(D, *ImportedDefOrErr);
else
return ImportedDefOrErr.takeError();
}
// Import the major distinguishing characteristics of an @interface.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Look for an existing interface with the same name.
ObjCInterfaceDecl *MergeWithIface = nullptr;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(Decl::IDNS_Ordinary))
continue;
if ((MergeWithIface = dyn_cast<ObjCInterfaceDecl>(FoundDecl)))
break;
}
// Create an interface declaration, if one does not already exist.
ObjCInterfaceDecl *ToIface = MergeWithIface;
if (!ToIface) {
ExpectedSLoc AtBeginLocOrErr = import(D->getAtStartLoc());
if (!AtBeginLocOrErr)
return AtBeginLocOrErr.takeError();
if (GetImportedOrCreateDecl(
ToIface, D, Importer.getToContext(), DC,
*AtBeginLocOrErr, Name.getAsIdentifierInfo(),
/*TypeParamList=*/nullptr,
/*PrevDecl=*/nullptr, Loc, D->isImplicitInterfaceDecl()))
return ToIface;
ToIface->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToIface);
}
Importer.MapImported(D, ToIface);
// Import the type parameter list after MapImported, to avoid
// loops when bringing in their DeclContext.
if (auto ToPListOrErr =
ImportObjCTypeParamList(D->getTypeParamListAsWritten()))
ToIface->setTypeParamList(*ToPListOrErr);
else
return ToPListOrErr.takeError();
if (D->isThisDeclarationADefinition())
if (Error Err = ImportDefinition(D, ToIface))
return std::move(Err);
return ToIface;
}
ExpectedDecl
ASTNodeImporter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
ObjCCategoryDecl *Category;
if (Error Err = importInto(Category, D->getCategoryDecl()))
return std::move(Err);
ObjCCategoryImplDecl *ToImpl = Category->getImplementation();
if (!ToImpl) {
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
Error Err = Error::success();
auto ToLocation = importChecked(Err, D->getLocation());
auto ToAtStartLoc = importChecked(Err, D->getAtStartLoc());
auto ToCategoryNameLoc = importChecked(Err, D->getCategoryNameLoc());
if (Err)
return std::move(Err);
if (GetImportedOrCreateDecl(
ToImpl, D, Importer.getToContext(), DC,
Importer.Import(D->getIdentifier()), Category->getClassInterface(),
ToLocation, ToAtStartLoc, ToCategoryNameLoc))
return ToImpl;
ToImpl->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToImpl);
Category->setImplementation(ToImpl);
}
Importer.MapImported(D, ToImpl);
if (Error Err = ImportDeclContext(D))
return std::move(Err);
return ToImpl;
}
ExpectedDecl
ASTNodeImporter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
// Find the corresponding interface.
ObjCInterfaceDecl *Iface;
if (Error Err = importInto(Iface, D->getClassInterface()))
return std::move(Err);
// Import the superclass, if any.
ObjCInterfaceDecl *Super;
if (Error Err = importInto(Super, D->getSuperClass()))
return std::move(Err);
ObjCImplementationDecl *Impl = Iface->getImplementation();
if (!Impl) {
// We haven't imported an implementation yet. Create a new @implementation
// now.
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
Error Err = Error::success();
auto ToLocation = importChecked(Err, D->getLocation());
auto ToAtStartLoc = importChecked(Err, D->getAtStartLoc());
auto ToSuperClassLoc = importChecked(Err, D->getSuperClassLoc());
auto ToIvarLBraceLoc = importChecked(Err, D->getIvarLBraceLoc());
auto ToIvarRBraceLoc = importChecked(Err, D->getIvarRBraceLoc());
if (Err)
return std::move(Err);
if (GetImportedOrCreateDecl(Impl, D, Importer.getToContext(),
DC, Iface, Super,
ToLocation,
ToAtStartLoc,
ToSuperClassLoc,
ToIvarLBraceLoc,
ToIvarRBraceLoc))
return Impl;
Impl->setLexicalDeclContext(LexicalDC);
// Associate the implementation with the class it implements.
Iface->setImplementation(Impl);
Importer.MapImported(D, Iface->getImplementation());
} else {
Importer.MapImported(D, Iface->getImplementation());
// Verify that the existing @implementation has the same superclass.
if ((Super && !Impl->getSuperClass()) ||
(!Super && Impl->getSuperClass()) ||
(Super && Impl->getSuperClass() &&
!declaresSameEntity(Super->getCanonicalDecl(),
Impl->getSuperClass()))) {
Importer.ToDiag(Impl->getLocation(),
diag::warn_odr_objc_superclass_inconsistent)
<< Iface->getDeclName();
// FIXME: It would be nice to have the location of the superclass
// below.
if (Impl->getSuperClass())
Importer.ToDiag(Impl->getLocation(),
diag::note_odr_objc_superclass)
<< Impl->getSuperClass()->getDeclName();
else
Importer.ToDiag(Impl->getLocation(),
diag::note_odr_objc_missing_superclass);
if (D->getSuperClass())
Importer.FromDiag(D->getLocation(),
diag::note_odr_objc_superclass)
<< D->getSuperClass()->getDeclName();
else
Importer.FromDiag(D->getLocation(),
diag::note_odr_objc_missing_superclass);
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
}
// Import all of the members of this @implementation.
if (Error Err = ImportDeclContext(D))
return std::move(Err);
return Impl;
}
ExpectedDecl ASTNodeImporter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
// Import the major distinguishing characteristics of an @property.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Check whether we have already imported this property.
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (auto *FoundProp = dyn_cast<ObjCPropertyDecl>(FoundDecl)) {
// Instance and class properties can share the same name but are different
// declarations.
if (FoundProp->isInstanceProperty() != D->isInstanceProperty())
continue;
// Check property types.
if (!Importer.IsStructurallyEquivalent(D->getType(),
FoundProp->getType())) {
Importer.ToDiag(Loc, diag::warn_odr_objc_property_type_inconsistent)
<< Name << D->getType() << FoundProp->getType();
Importer.ToDiag(FoundProp->getLocation(), diag::note_odr_value_here)
<< FoundProp->getType();
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
// FIXME: Check property attributes, getters, setters, etc.?
// Consider these properties to be equivalent.
Importer.MapImported(D, FoundProp);
return FoundProp;
}
}
Error Err = Error::success();
auto ToType = importChecked(Err, D->getType());
auto ToTypeSourceInfo = importChecked(Err, D->getTypeSourceInfo());
auto ToAtLoc = importChecked(Err, D->getAtLoc());
auto ToLParenLoc = importChecked(Err, D->getLParenLoc());
if (Err)
return std::move(Err);
// Create the new property.
ObjCPropertyDecl *ToProperty;
if (GetImportedOrCreateDecl(
ToProperty, D, Importer.getToContext(), DC, Loc,
Name.getAsIdentifierInfo(), ToAtLoc,
ToLParenLoc, ToType,
ToTypeSourceInfo, D->getPropertyImplementation()))
return ToProperty;
auto ToGetterName = importChecked(Err, D->getGetterName());
auto ToSetterName = importChecked(Err, D->getSetterName());
auto ToGetterNameLoc = importChecked(Err, D->getGetterNameLoc());
auto ToSetterNameLoc = importChecked(Err, D->getSetterNameLoc());
auto ToGetterMethodDecl = importChecked(Err, D->getGetterMethodDecl());
auto ToSetterMethodDecl = importChecked(Err, D->getSetterMethodDecl());
auto ToPropertyIvarDecl = importChecked(Err, D->getPropertyIvarDecl());
if (Err)
return std::move(Err);
ToProperty->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToProperty);
ToProperty->setPropertyAttributes(D->getPropertyAttributes());
ToProperty->setPropertyAttributesAsWritten(
D->getPropertyAttributesAsWritten());
ToProperty->setGetterName(ToGetterName, ToGetterNameLoc);
ToProperty->setSetterName(ToSetterName, ToSetterNameLoc);
ToProperty->setGetterMethodDecl(ToGetterMethodDecl);
ToProperty->setSetterMethodDecl(ToSetterMethodDecl);
ToProperty->setPropertyIvarDecl(ToPropertyIvarDecl);
return ToProperty;
}
ExpectedDecl
ASTNodeImporter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
ObjCPropertyDecl *Property;
if (Error Err = importInto(Property, D->getPropertyDecl()))
return std::move(Err);
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
auto *InImpl = cast<ObjCImplDecl>(LexicalDC);
// Import the ivar (for an @synthesize).
ObjCIvarDecl *Ivar = nullptr;
if (Error Err = importInto(Ivar, D->getPropertyIvarDecl()))
return std::move(Err);
ObjCPropertyImplDecl *ToImpl
= InImpl->FindPropertyImplDecl(Property->getIdentifier(),
Property->getQueryKind());
if (!ToImpl) {
Error Err = Error::success();
auto ToBeginLoc = importChecked(Err, D->getBeginLoc());
auto ToLocation = importChecked(Err, D->getLocation());
auto ToPropertyIvarDeclLoc =
importChecked(Err, D->getPropertyIvarDeclLoc());
if (Err)
return std::move(Err);
if (GetImportedOrCreateDecl(ToImpl, D, Importer.getToContext(), DC,
ToBeginLoc,
ToLocation, Property,
D->getPropertyImplementation(), Ivar,
ToPropertyIvarDeclLoc))
return ToImpl;
ToImpl->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToImpl);
} else {
// Check that we have the same kind of property implementation (@synthesize
// vs. @dynamic).
if (D->getPropertyImplementation() != ToImpl->getPropertyImplementation()) {
Importer.ToDiag(ToImpl->getLocation(),
diag::warn_odr_objc_property_impl_kind_inconsistent)
<< Property->getDeclName()
<< (ToImpl->getPropertyImplementation()
== ObjCPropertyImplDecl::Dynamic);
Importer.FromDiag(D->getLocation(),
diag::note_odr_objc_property_impl_kind)
<< D->getPropertyDecl()->getDeclName()
<< (D->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic);
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
// For @synthesize, check that we have the same
if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize &&
Ivar != ToImpl->getPropertyIvarDecl()) {
Importer.ToDiag(ToImpl->getPropertyIvarDeclLoc(),
diag::warn_odr_objc_synthesize_ivar_inconsistent)
<< Property->getDeclName()
<< ToImpl->getPropertyIvarDecl()->getDeclName()
<< Ivar->getDeclName();
Importer.FromDiag(D->getPropertyIvarDeclLoc(),
diag::note_odr_objc_synthesize_ivar_here)
<< D->getPropertyIvarDecl()->getDeclName();
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
// Merge the existing implementation with the new implementation.
Importer.MapImported(D, ToImpl);
}
return ToImpl;
}
ExpectedDecl
ASTNodeImporter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
// For template arguments, we adopt the translation unit as our declaration
// context. This context will be fixed when the actual template declaration
// is created.
ExpectedSLoc BeginLocOrErr = import(D->getBeginLoc());
if (!BeginLocOrErr)
return BeginLocOrErr.takeError();
ExpectedSLoc LocationOrErr = import(D->getLocation());
if (!LocationOrErr)
return LocationOrErr.takeError();
TemplateTypeParmDecl *ToD = nullptr;
if (GetImportedOrCreateDecl(
ToD, D, Importer.getToContext(),
Importer.getToContext().getTranslationUnitDecl(),
*BeginLocOrErr, *LocationOrErr,
D->getDepth(), D->getIndex(), Importer.Import(D->getIdentifier()),
D->wasDeclaredWithTypename(), D->isParameterPack(),
D->hasTypeConstraint()))
return ToD;
// Import the type-constraint
if (const TypeConstraint *TC = D->getTypeConstraint()) {
Error Err = Error::success();
auto ToConceptRef = importChecked(Err, TC->getConceptReference());
auto ToIDC = importChecked(Err, TC->getImmediatelyDeclaredConstraint());
if (Err)
return std::move(Err);
ToD->setTypeConstraint(ToConceptRef, ToIDC);
}
if (D->hasDefaultArgument()) {
Expected<TypeSourceInfo *> ToDefaultArgOrErr =
import(D->getDefaultArgumentInfo());
if (!ToDefaultArgOrErr)
return ToDefaultArgOrErr.takeError();
ToD->setDefaultArgument(*ToDefaultArgOrErr);
}
return ToD;
}
ExpectedDecl
ASTNodeImporter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
Error Err = Error::success();
auto ToDeclName = importChecked(Err, D->getDeclName());
auto ToLocation = importChecked(Err, D->getLocation());
auto ToType = importChecked(Err, D->getType());
auto ToTypeSourceInfo = importChecked(Err, D->getTypeSourceInfo());
auto ToInnerLocStart = importChecked(Err, D->getInnerLocStart());
if (Err)
return std::move(Err);
NonTypeTemplateParmDecl *ToD = nullptr;
if (GetImportedOrCreateDecl(ToD, D, Importer.getToContext(),
Importer.getToContext().getTranslationUnitDecl(),
ToInnerLocStart, ToLocation, D->getDepth(),
D->getPosition(),
ToDeclName.getAsIdentifierInfo(), ToType,
D->isParameterPack(), ToTypeSourceInfo))
return ToD;
if (D->hasDefaultArgument()) {
ExpectedExpr ToDefaultArgOrErr = import(D->getDefaultArgument());
if (!ToDefaultArgOrErr)
return ToDefaultArgOrErr.takeError();
ToD->setDefaultArgument(*ToDefaultArgOrErr);
}
return ToD;
}
ExpectedDecl
ASTNodeImporter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
// Import the name of this declaration.
auto NameOrErr = import(D->getDeclName());
if (!NameOrErr)
return NameOrErr.takeError();
// Import the location of this declaration.
ExpectedSLoc LocationOrErr = import(D->getLocation());
if (!LocationOrErr)
return LocationOrErr.takeError();
// Import template parameters.
auto TemplateParamsOrErr = import(D->getTemplateParameters());
if (!TemplateParamsOrErr)
return TemplateParamsOrErr.takeError();
TemplateTemplateParmDecl *ToD = nullptr;
if (GetImportedOrCreateDecl(
ToD, D, Importer.getToContext(),
Importer.getToContext().getTranslationUnitDecl(), *LocationOrErr,
D->getDepth(), D->getPosition(), D->isParameterPack(),
(*NameOrErr).getAsIdentifierInfo(), D->wasDeclaredWithTypename(),
*TemplateParamsOrErr))
return ToD;
if (D->hasDefaultArgument()) {
Expected<TemplateArgumentLoc> ToDefaultArgOrErr =
import(D->getDefaultArgument());
if (!ToDefaultArgOrErr)
return ToDefaultArgOrErr.takeError();
ToD->setDefaultArgument(Importer.getToContext(), *ToDefaultArgOrErr);
}
return ToD;
}
// Returns the definition for a (forward) declaration of a TemplateDecl, if
// it has any definition in the redecl chain.
template <typename T> static auto getTemplateDefinition(T *D) -> T * {
assert(D->getTemplatedDecl() && "Should be called on templates only");
auto *ToTemplatedDef = D->getTemplatedDecl()->getDefinition();
if (!ToTemplatedDef)
return nullptr;
auto *TemplateWithDef = ToTemplatedDef->getDescribedTemplate();
return cast_or_null<T>(TemplateWithDef);
}
ExpectedDecl ASTNodeImporter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
// Import the major distinguishing characteristics of this class template.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// Should check if a declaration is friend in a dependent context.
// Such templates are not linked together in a declaration chain.
// The ASTImporter strategy is to map existing forward declarations to
// imported ones only if strictly necessary, otherwise import these as new
// forward declarations. In case of the "dependent friend" declarations, new
// declarations are created, but not linked in a declaration chain.
auto IsDependentFriend = [](ClassTemplateDecl *TD) {
return TD->getFriendObjectKind() != Decl::FOK_None &&
TD->getLexicalDeclContext()->isDependentContext();
};
bool DependentFriend = IsDependentFriend(D);
ClassTemplateDecl *FoundByLookup = nullptr;
// We may already have a template of the same name; try to find and match it.
if (!DC->isFunctionOrMethod()) {
SmallVector<NamedDecl *, 4> ConflictingDecls;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(Decl::IDNS_Ordinary |
Decl::IDNS_TagFriend))
continue;
Decl *Found = FoundDecl;
auto *FoundTemplate = dyn_cast<ClassTemplateDecl>(Found);
if (FoundTemplate) {
if (!hasSameVisibilityContextAndLinkage(FoundTemplate, D))
continue;
// FIXME: sufficient conditon for 'IgnoreTemplateParmDepth'?
bool IgnoreTemplateParmDepth =
(FoundTemplate->getFriendObjectKind() != Decl::FOK_None) !=
(D->getFriendObjectKind() != Decl::FOK_None);
if (IsStructuralMatch(D, FoundTemplate, /*Complain=*/true,
IgnoreTemplateParmDepth)) {
if (DependentFriend || IsDependentFriend(FoundTemplate))
continue;
ClassTemplateDecl *TemplateWithDef =
getTemplateDefinition(FoundTemplate);
if (D->isThisDeclarationADefinition() && TemplateWithDef)
return Importer.MapImported(D, TemplateWithDef);
if (!FoundByLookup)
FoundByLookup = FoundTemplate;
// Search in all matches because there may be multiple decl chains,
// see ASTTests test ImportExistingFriendClassTemplateDef.
continue;
}
ConflictingDecls.push_back(FoundDecl);
}
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
Name, DC, Decl::IDNS_Ordinary, ConflictingDecls.data(),
ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
}
CXXRecordDecl *FromTemplated = D->getTemplatedDecl();
auto TemplateParamsOrErr = import(D->getTemplateParameters());
if (!TemplateParamsOrErr)
return TemplateParamsOrErr.takeError();
// Create the declaration that is being templated.
CXXRecordDecl *ToTemplated;
if (Error Err = importInto(ToTemplated, FromTemplated))
return std::move(Err);
// Create the class template declaration itself.
ClassTemplateDecl *D2;
if (GetImportedOrCreateDecl(D2, D, Importer.getToContext(), DC, Loc, Name,
*TemplateParamsOrErr, ToTemplated))
return D2;
ToTemplated->setDescribedClassTemplate(D2);
D2->setAccess(D->getAccess());
D2->setLexicalDeclContext(LexicalDC);
addDeclToContexts(D, D2);
updateLookupTableForTemplateParameters(**TemplateParamsOrErr);
if (FoundByLookup) {
auto *Recent =
const_cast<ClassTemplateDecl *>(FoundByLookup->getMostRecentDecl());
// It is possible that during the import of the class template definition
// we start the import of a fwd friend decl of the very same class template
// and we add the fwd friend decl to the lookup table. But the ToTemplated
// had been created earlier and by that time the lookup could not find
// anything existing, so it has no previous decl. Later, (still during the
// import of the fwd friend decl) we start to import the definition again
// and this time the lookup finds the previous fwd friend class template.
// In this case we must set up the previous decl for the templated decl.
if (!ToTemplated->getPreviousDecl()) {
assert(FoundByLookup->getTemplatedDecl() &&
"Found decl must have its templated decl set");
CXXRecordDecl *PrevTemplated =
FoundByLookup->getTemplatedDecl()->getMostRecentDecl();
if (ToTemplated != PrevTemplated)
ToTemplated->setPreviousDecl(PrevTemplated);
}
D2->setPreviousDecl(Recent);
}
return D2;
}
ExpectedDecl ASTNodeImporter::VisitClassTemplateSpecializationDecl(
ClassTemplateSpecializationDecl *D) {
ClassTemplateDecl *ClassTemplate;
if (Error Err = importInto(ClassTemplate, D->getSpecializedTemplate()))
return std::move(Err);
// Import the context of this declaration.
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
// Import template arguments.
SmallVector<TemplateArgument, 2> TemplateArgs;
if (Error Err =
ImportTemplateArguments(D->getTemplateArgs().asArray(), TemplateArgs))
return std::move(Err);
// Try to find an existing specialization with these template arguments and
// template parameter list.
void *InsertPos = nullptr;
ClassTemplateSpecializationDecl *PrevDecl = nullptr;
ClassTemplatePartialSpecializationDecl *PartialSpec =
dyn_cast<ClassTemplatePartialSpecializationDecl>(D);
// Import template parameters.
TemplateParameterList *ToTPList = nullptr;
if (PartialSpec) {
auto ToTPListOrErr = import(PartialSpec->getTemplateParameters());
if (!ToTPListOrErr)
return ToTPListOrErr.takeError();
ToTPList = *ToTPListOrErr;
PrevDecl = ClassTemplate->findPartialSpecialization(TemplateArgs,
*ToTPListOrErr,
InsertPos);
} else
PrevDecl = ClassTemplate->findSpecialization(TemplateArgs, InsertPos);
if (PrevDecl) {
if (IsStructuralMatch(D, PrevDecl)) {
CXXRecordDecl *PrevDefinition = PrevDecl->getDefinition();
if (D->isThisDeclarationADefinition() && PrevDefinition) {
Importer.MapImported(D, PrevDefinition);
// Import those default field initializers which have been
// instantiated in the "From" context, but not in the "To" context.
for (auto *FromField : D->fields()) {
auto ToOrErr = import(FromField);
if (!ToOrErr)
return ToOrErr.takeError();
}
// Import those methods which have been instantiated in the
// "From" context, but not in the "To" context.
for (CXXMethodDecl *FromM : D->methods()) {
auto ToOrErr = import(FromM);
if (!ToOrErr)
return ToOrErr.takeError();
}
// TODO Import instantiated default arguments.
// TODO Import instantiated exception specifications.
//
// Generally, ASTCommon.h/DeclUpdateKind enum gives a very good hint
// what else could be fused during an AST merge.
return PrevDefinition;
}
} else { // ODR violation.
// FIXME HandleNameConflict
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
}
// Import the location of this declaration.
ExpectedSLoc BeginLocOrErr = import(D->getBeginLoc());
if (!BeginLocOrErr)
return BeginLocOrErr.takeError();
ExpectedSLoc IdLocOrErr = import(D->getLocation());
if (!IdLocOrErr)
return IdLocOrErr.takeError();
// Create the specialization.
ClassTemplateSpecializationDecl *D2 = nullptr;
if (PartialSpec) {
// Import TemplateArgumentListInfo.
TemplateArgumentListInfo ToTAInfo;
const auto &ASTTemplateArgs = *PartialSpec->getTemplateArgsAsWritten();
if (Error Err = ImportTemplateArgumentListInfo(ASTTemplateArgs, ToTAInfo))
return std::move(Err);
QualType CanonInjType;
if (Error Err = importInto(
CanonInjType, PartialSpec->getInjectedSpecializationType()))
return std::move(Err);
CanonInjType = CanonInjType.getCanonicalType();
if (GetImportedOrCreateDecl<ClassTemplatePartialSpecializationDecl>(
D2, D, Importer.getToContext(), D->getTagKind(), DC, *BeginLocOrErr,
*IdLocOrErr, ToTPList, ClassTemplate,
llvm::ArrayRef(TemplateArgs.data(), TemplateArgs.size()), ToTAInfo,
CanonInjType,
cast_or_null<ClassTemplatePartialSpecializationDecl>(PrevDecl)))
return D2;
// Update InsertPos, because preceding import calls may have invalidated
// it by adding new specializations.
auto *PartSpec2 = cast<ClassTemplatePartialSpecializationDecl>(D2);
if (!ClassTemplate->findPartialSpecialization(TemplateArgs, ToTPList,
InsertPos))
// Add this partial specialization to the class template.
ClassTemplate->AddPartialSpecialization(PartSpec2, InsertPos);
if (Expected<ClassTemplatePartialSpecializationDecl *> ToInstOrErr =
import(PartialSpec->getInstantiatedFromMember()))
PartSpec2->setInstantiatedFromMember(*ToInstOrErr);
else
return ToInstOrErr.takeError();
updateLookupTableForTemplateParameters(*ToTPList);
} else { // Not a partial specialization.
if (GetImportedOrCreateDecl(
D2, D, Importer.getToContext(), D->getTagKind(), DC,
*BeginLocOrErr, *IdLocOrErr, ClassTemplate, TemplateArgs,
PrevDecl))
return D2;
// Update InsertPos, because preceding import calls may have invalidated
// it by adding new specializations.
if (!ClassTemplate->findSpecialization(TemplateArgs, InsertPos))
// Add this specialization to the class template.
ClassTemplate->AddSpecialization(D2, InsertPos);
}
D2->setSpecializationKind(D->getSpecializationKind());
// Set the context of this specialization/instantiation.
D2->setLexicalDeclContext(LexicalDC);
// Add to the DC only if it was an explicit specialization/instantiation.
if (D2->isExplicitInstantiationOrSpecialization()) {
LexicalDC->addDeclInternal(D2);
}
if (auto BraceRangeOrErr = import(D->getBraceRange()))
D2->setBraceRange(*BraceRangeOrErr);
else
return BraceRangeOrErr.takeError();
// Import the qualifier, if any.
if (auto LocOrErr = import(D->getQualifierLoc()))
D2->setQualifierInfo(*LocOrErr);
else
return LocOrErr.takeError();
if (auto *TSI = D->getTypeAsWritten()) {
if (auto TInfoOrErr = import(TSI))
D2->setTypeAsWritten(*TInfoOrErr);
else
return TInfoOrErr.takeError();
if (auto LocOrErr = import(D->getTemplateKeywordLoc()))
D2->setTemplateKeywordLoc(*LocOrErr);
else
return LocOrErr.takeError();
if (auto LocOrErr = import(D->getExternLoc()))
D2->setExternLoc(*LocOrErr);
else
return LocOrErr.takeError();
}
if (D->getPointOfInstantiation().isValid()) {
if (auto POIOrErr = import(D->getPointOfInstantiation()))
D2->setPointOfInstantiation(*POIOrErr);
else
return POIOrErr.takeError();
}
D2->setTemplateSpecializationKind(D->getTemplateSpecializationKind());
if (auto P = D->getInstantiatedFrom()) {
if (auto *CTD = P.dyn_cast<ClassTemplateDecl *>()) {
if (auto CTDorErr = import(CTD))
D2->setInstantiationOf(*CTDorErr);
} else {
auto *CTPSD = cast<ClassTemplatePartialSpecializationDecl *>(P);
auto CTPSDOrErr = import(CTPSD);
if (!CTPSDOrErr)
return CTPSDOrErr.takeError();
const TemplateArgumentList &DArgs = D->getTemplateInstantiationArgs();
SmallVector<TemplateArgument, 2> D2ArgsVec(DArgs.size());
for (unsigned I = 0; I < DArgs.size(); ++I) {
const TemplateArgument &DArg = DArgs[I];
if (auto ArgOrErr = import(DArg))
D2ArgsVec[I] = *ArgOrErr;
else
return ArgOrErr.takeError();
}
D2->setInstantiationOf(
*CTPSDOrErr,
TemplateArgumentList::CreateCopy(Importer.getToContext(), D2ArgsVec));
}
}
if (D->isCompleteDefinition())
if (Error Err = ImportDefinition(D, D2))
return std::move(Err);
return D2;
}
ExpectedDecl ASTNodeImporter::VisitVarTemplateDecl(VarTemplateDecl *D) {
// Import the major distinguishing characteristics of this variable template.
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
// 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;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
VarTemplateDecl *FoundByLookup = nullptr;
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(Decl::IDNS_Ordinary))
continue;
if (VarTemplateDecl *FoundTemplate = dyn_cast<VarTemplateDecl>(FoundDecl)) {
// Use the templated decl, some linkage flags are set only there.
if (!hasSameVisibilityContextAndLinkage(FoundTemplate->getTemplatedDecl(),
D->getTemplatedDecl()))
continue;
if (IsStructuralMatch(D, FoundTemplate)) {
// FIXME Check for ODR error if the two definitions have
// different initializers?
VarTemplateDecl *FoundDef = getTemplateDefinition(FoundTemplate);
if (D->getDeclContext()->isRecord()) {
assert(FoundTemplate->getDeclContext()->isRecord() &&
"Member variable template imported as non-member, "
"inconsistent imported AST?");
if (FoundDef)
return Importer.MapImported(D, FoundDef);
if (!D->isThisDeclarationADefinition())
return Importer.MapImported(D, FoundTemplate);
} else {
if (FoundDef && D->isThisDeclarationADefinition())
return Importer.MapImported(D, FoundDef);
}
FoundByLookup = FoundTemplate;
break;
}
ConflictingDecls.push_back(FoundDecl);
}
}
if (!ConflictingDecls.empty()) {
ExpectedName NameOrErr = Importer.HandleNameConflict(
Name, DC, Decl::IDNS_Ordinary, ConflictingDecls.data(),
ConflictingDecls.size());
if (NameOrErr)
Name = NameOrErr.get();
else
return NameOrErr.takeError();
}
VarDecl *DTemplated = D->getTemplatedDecl();
// Import the type.
// FIXME: Value not used?
ExpectedType TypeOrErr = import(DTemplated->getType());
if (!TypeOrErr)
return TypeOrErr.takeError();
// Create the declaration that is being templated.
VarDecl *ToTemplated;
if (Error Err = importInto(ToTemplated, DTemplated))
return std::move(Err);
// Create the variable template declaration itself.
auto TemplateParamsOrErr = import(D->getTemplateParameters());
if (!TemplateParamsOrErr)
return TemplateParamsOrErr.takeError();
VarTemplateDecl *ToVarTD;
if (GetImportedOrCreateDecl(ToVarTD, D, Importer.getToContext(), DC, Loc,
Name, *TemplateParamsOrErr, ToTemplated))
return ToVarTD;
ToTemplated->setDescribedVarTemplate(ToVarTD);
ToVarTD->setAccess(D->getAccess());
ToVarTD->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(ToVarTD);
if (DC != Importer.getToContext().getTranslationUnitDecl())
updateLookupTableForTemplateParameters(**TemplateParamsOrErr);
if (FoundByLookup) {
auto *Recent =
const_cast<VarTemplateDecl *>(FoundByLookup->getMostRecentDecl());
if (!ToTemplated->getPreviousDecl()) {
auto *PrevTemplated =
FoundByLookup->getTemplatedDecl()->getMostRecentDecl();
if (ToTemplated != PrevTemplated)
ToTemplated->setPreviousDecl(PrevTemplated);
}
ToVarTD->setPreviousDecl(Recent);
}
return ToVarTD;
}
ExpectedDecl ASTNodeImporter::VisitVarTemplateSpecializationDecl(
VarTemplateSpecializationDecl *D) {
// A VarTemplateSpecializationDecl inherits from VarDecl, the import is done
// in an analog way (but specialized for this case).
SmallVector<Decl *, 2> Redecls = getCanonicalForwardRedeclChain(D);
auto RedeclIt = Redecls.begin();
// Import the first part of the decl chain. I.e. import all previous
// declarations starting from the canonical decl.
for (; RedeclIt != Redecls.end() && *RedeclIt != D; ++RedeclIt) {
ExpectedDecl RedeclOrErr = import(*RedeclIt);
if (!RedeclOrErr)
return RedeclOrErr.takeError();
}
assert(*RedeclIt == D);
VarTemplateDecl *VarTemplate = nullptr;
if (Error Err = importInto(VarTemplate, D->getSpecializedTemplate()))
return std::move(Err);
// Import the context of this declaration.
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
// Import the location of this declaration.
ExpectedSLoc BeginLocOrErr = import(D->getBeginLoc());
if (!BeginLocOrErr)
return BeginLocOrErr.takeError();
auto IdLocOrErr = import(D->getLocation());
if (!IdLocOrErr)
return IdLocOrErr.takeError();
// Import template arguments.
SmallVector<TemplateArgument, 2> TemplateArgs;
if (Error Err =
ImportTemplateArguments(D->getTemplateArgs().asArray(), TemplateArgs))
return std::move(Err);
// Try to find an existing specialization with these template arguments.
void *InsertPos = nullptr;
VarTemplateSpecializationDecl *FoundSpecialization =
VarTemplate->findSpecialization(TemplateArgs, InsertPos);
if (FoundSpecialization) {
if (IsStructuralMatch(D, FoundSpecialization)) {
VarDecl *FoundDef = FoundSpecialization->getDefinition();
if (D->getDeclContext()->isRecord()) {
// In a record, it is allowed only to have one optional declaration and
// one definition of the (static or constexpr) variable template.
assert(
FoundSpecialization->getDeclContext()->isRecord() &&
"Member variable template specialization imported as non-member, "
"inconsistent imported AST?");
if (FoundDef)
return Importer.MapImported(D, FoundDef);
if (!D->isThisDeclarationADefinition())
return Importer.MapImported(D, FoundSpecialization);
} else {
// If definition is imported and there is already one, map to it.
// Otherwise create a new variable and link it to the existing.
if (FoundDef && D->isThisDeclarationADefinition())
return Importer.MapImported(D, FoundDef);
}
} else {
return make_error<ASTImportError>(ASTImportError::NameConflict);
}
}
VarTemplateSpecializationDecl *D2 = nullptr;
TemplateArgumentListInfo ToTAInfo;
if (const ASTTemplateArgumentListInfo *Args = D->getTemplateArgsInfo()) {
if (Error Err = ImportTemplateArgumentListInfo(*Args, ToTAInfo))
return std::move(Err);
}
using PartVarSpecDecl = VarTemplatePartialSpecializationDecl;
// Create a new specialization.
if (auto *FromPartial = dyn_cast<PartVarSpecDecl>(D)) {
// Import TemplateArgumentListInfo
TemplateArgumentListInfo ArgInfos;
const auto *FromTAArgsAsWritten = FromPartial->getTemplateArgsAsWritten();
// NOTE: FromTAArgsAsWritten and template parameter list are non-null.
if (Error Err =
ImportTemplateArgumentListInfo(*FromTAArgsAsWritten, ArgInfos))
return std::move(Err);
auto ToTPListOrErr = import(FromPartial->getTemplateParameters());
if (!ToTPListOrErr)
return ToTPListOrErr.takeError();
PartVarSpecDecl *ToPartial;
if (GetImportedOrCreateDecl(ToPartial, D, Importer.getToContext(), DC,
*BeginLocOrErr, *IdLocOrErr, *ToTPListOrErr,
VarTemplate, QualType(), nullptr,
D->getStorageClass(), TemplateArgs, ArgInfos))
return ToPartial;
if (Expected<PartVarSpecDecl *> ToInstOrErr =
import(FromPartial->getInstantiatedFromMember()))
ToPartial->setInstantiatedFromMember(*ToInstOrErr);
else
return ToInstOrErr.takeError();
if (FromPartial->isMemberSpecialization())
ToPartial->setMemberSpecialization();
D2 = ToPartial;
// FIXME: Use this update if VarTemplatePartialSpecializationDecl is fixed
// to adopt template parameters.
// updateLookupTableForTemplateParameters(**ToTPListOrErr);
} else { // Full specialization
if (GetImportedOrCreateDecl(D2, D, Importer.getToContext(), DC,
*BeginLocOrErr, *IdLocOrErr, VarTemplate,
QualType(), nullptr, D->getStorageClass(),
TemplateArgs))
return D2;
}
QualType T;
if (Error Err = importInto(T, D->getType()))
return std::move(Err);
D2->setType(T);
auto TInfoOrErr = import(D->getTypeSourceInfo());
if (!TInfoOrErr)
return TInfoOrErr.takeError();
D2->setTypeSourceInfo(*TInfoOrErr);
if (D->getPointOfInstantiation().isValid()) {
if (ExpectedSLoc POIOrErr = import(D->getPointOfInstantiation()))
D2->setPointOfInstantiation(*POIOrErr);
else
return POIOrErr.takeError();
}
D2->setSpecializationKind(D->getSpecializationKind());
D2->setTemplateArgsInfo(ToTAInfo);
if (auto LocOrErr = import(D->getQualifierLoc()))
D2->setQualifierInfo(*LocOrErr);
else
return LocOrErr.takeError();
if (D->isConstexpr())
D2->setConstexpr(true);
D2->setAccess(D->getAccess());
if (Error Err = ImportInitializer(D, D2))
return std::move(Err);
if (FoundSpecialization)
D2->setPreviousDecl(FoundSpecialization->getMostRecentDecl());
VarTemplate->AddSpecialization(D2, InsertPos);
addDeclToContexts(D, D2);
// Import the rest of the chain. I.e. import all subsequent declarations.
for (++RedeclIt; RedeclIt != Redecls.end(); ++RedeclIt) {
ExpectedDecl RedeclOrErr = import(*RedeclIt);
if (!RedeclOrErr)
return RedeclOrErr.takeError();
}
return D2;
}
ExpectedDecl
ASTNodeImporter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
DeclContext *DC, *LexicalDC;
DeclarationName Name;
SourceLocation Loc;
NamedDecl *ToD;
if (Error Err = ImportDeclParts(D, DC, LexicalDC, Name, ToD, Loc))
return std::move(Err);
if (ToD)
return ToD;
const FunctionTemplateDecl *FoundByLookup = nullptr;
// Try to find a function in our own ("to") context with the same name, same
// type, and in the same context as the function we're importing.
// FIXME Split this into a separate function.
if (!LexicalDC->isFunctionOrMethod()) {
unsigned IDNS = Decl::IDNS_Ordinary | Decl::IDNS_OrdinaryFriend;
auto FoundDecls = Importer.findDeclsInToCtx(DC, Name);
for (auto *FoundDecl : FoundDecls) {
if (!FoundDecl->isInIdentifierNamespace(IDNS))
continue;
if (auto *FoundTemplate = dyn_cast<FunctionTemplateDecl>(FoundDecl)) {
if (!hasSameVisibilityContextAndLinkage(FoundTemplate, D))
continue;
if (IsStructuralMatch(D, FoundTemplate)) {
FunctionTemplateDecl *TemplateWithDef =
getTemplateDefinition(FoundTemplate);
if (D->isThisDeclarationADefinition() && TemplateWithDef)
return Importer.MapImported(D, TemplateWithDef);
FoundByLookup = FoundTemplate;
break;
// TODO: handle conflicting names
}
}
}
}
auto ParamsOrErr = import(D->getTemplateParameters());
if (!ParamsOrErr)
return ParamsOrErr.takeError();
TemplateParameterList *Params = *ParamsOrErr;
FunctionDecl *TemplatedFD;
if (Error Err = importInto(TemplatedFD, D->getTemplatedDecl()))
return std::move(Err);
// At creation of the template the template parameters are "adopted"
// (DeclContext is changed). After this possible change the lookup table
// must be updated.
// At deduction guides the DeclContext of the template parameters may be
// different from what we would expect, it may be the class template, or a
// probably different CXXDeductionGuideDecl. This may come from the fact that
// the template parameter objects may be shared between deduction guides or
// the class template, and at creation of multiple FunctionTemplateDecl
// objects (for deduction guides) the same parameters are re-used. The
// "adoption" happens multiple times with different parent, even recursively
// for TemplateTemplateParmDecl. The same happens at import when the
// FunctionTemplateDecl objects are created, but in different order.
// In this way the DeclContext of these template parameters is not necessarily
// the same as in the "from" context.
SmallVector<DeclContext *, 2> OldParamDC;
OldParamDC.reserve(Params->size());
llvm::transform(*Params, std::back_inserter(OldParamDC),
[](NamedDecl *ND) { return ND->getDeclContext(); });
FunctionTemplateDecl *ToFunc;
if (GetImportedOrCreateDecl(ToFunc, D, Importer.getToContext(), DC, Loc, Name,
Params, TemplatedFD))
return ToFunc;
TemplatedFD->setDescribedFunctionTemplate(ToFunc);
ToFunc->setAccess(D->getAccess());
ToFunc->setLexicalDeclContext(LexicalDC);
addDeclToContexts(D, ToFunc);
ASTImporterLookupTable *LT = Importer.SharedState->getLookupTable();
if (LT && !OldParamDC.empty()) {
for (unsigned int I = 0; I < OldParamDC.size(); ++I)
LT->updateForced(Params->getParam(I), OldParamDC[I]);
}
if (FoundByLookup) {
auto *Recent =
const_cast<FunctionTemplateDecl *>(FoundByLookup->getMostRecentDecl());
if (!TemplatedFD->getPreviousDecl()) {
assert(FoundByLookup->getTemplatedDecl() &&
"Found decl must have its templated decl set");
auto *PrevTemplated =
FoundByLookup->getTemplatedDecl()->getMostRecentDecl();
if (TemplatedFD != PrevTemplated)
TemplatedFD->setPreviousDecl(PrevTemplated);
}
ToFunc->setPreviousDecl(Recent);
}
return ToFunc;
}
//----------------------------------------------------------------------------
// Import Statements
//----------------------------------------------------------------------------
ExpectedStmt ASTNodeImporter::VisitStmt(Stmt *S) {
Importer.FromDiag(S->getBeginLoc(), diag::err_unsupported_ast_node)
<< S->getStmtClassName();
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
}
ExpectedStmt ASTNodeImporter::VisitGCCAsmStmt(GCCAsmStmt *S) {
if (Importer.returnWithErrorInTest())
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
SmallVector<IdentifierInfo *, 4> Names;
for (unsigned I = 0, E = S->getNumOutputs(); I != E; I++) {
IdentifierInfo *ToII = Importer.Import(S->getOutputIdentifier(I));
// ToII is nullptr when no symbolic name is given for output operand
// see ParseStmtAsm::ParseAsmOperandsOpt
Names.push_back(ToII);
}
for (unsigned I = 0, E = S->getNumInputs(); I != E; I++) {
IdentifierInfo *ToII = Importer.Import(S->getInputIdentifier(I));
// ToII is nullptr when no symbolic name is given for input operand
// see ParseStmtAsm::ParseAsmOperandsOpt
Names.push_back(ToII);
}
SmallVector<StringLiteral *, 4> Clobbers;
for (unsigned I = 0, E = S->getNumClobbers(); I != E; I++) {
if (auto ClobberOrErr = import(S->getClobberStringLiteral(I)))
Clobbers.push_back(*ClobberOrErr);
else
return ClobberOrErr.takeError();
}
SmallVector<StringLiteral *, 4> Constraints;
for (unsigned I = 0, E = S->getNumOutputs(); I != E; I++) {
if (auto OutputOrErr = import(S->getOutputConstraintLiteral(I)))
Constraints.push_back(*OutputOrErr);
else
return OutputOrErr.takeError();
}
for (unsigned I = 0, E = S->getNumInputs(); I != E; I++) {
if (auto InputOrErr = import(S->getInputConstraintLiteral(I)))
Constraints.push_back(*InputOrErr);
else
return InputOrErr.takeError();
}
SmallVector<Expr *, 4> Exprs(S->getNumOutputs() + S->getNumInputs() +
S->getNumLabels());
if (Error Err = ImportContainerChecked(S->outputs(), Exprs))
return std::move(Err);
if (Error Err =
ImportArrayChecked(S->inputs(), Exprs.begin() + S->getNumOutputs()))
return std::move(Err);
if (Error Err = ImportArrayChecked(
S->labels(), Exprs.begin() + S->getNumOutputs() + S->getNumInputs()))
return std::move(Err);
ExpectedSLoc AsmLocOrErr = import(S->getAsmLoc());
if (!AsmLocOrErr)
return AsmLocOrErr.takeError();
auto AsmStrOrErr = import(S->getAsmString());
if (!AsmStrOrErr)
return AsmStrOrErr.takeError();
ExpectedSLoc RParenLocOrErr = import(S->getRParenLoc());
if (!RParenLocOrErr)
return RParenLocOrErr.takeError();
return new (Importer.getToContext()) GCCAsmStmt(
Importer.getToContext(),
*AsmLocOrErr,
S->isSimple(),
S->isVolatile(),
S->getNumOutputs(),
S->getNumInputs(),
Names.data(),
Constraints.data(),
Exprs.data(),
*AsmStrOrErr,
S->getNumClobbers(),
Clobbers.data(),
S->getNumLabels(),
*RParenLocOrErr);
}
ExpectedStmt ASTNodeImporter::VisitDeclStmt(DeclStmt *S) {
Error Err = Error::success();
auto ToDG = importChecked(Err, S->getDeclGroup());
auto ToBeginLoc = importChecked(Err, S->getBeginLoc());
auto ToEndLoc = importChecked(Err, S->getEndLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) DeclStmt(ToDG, ToBeginLoc, ToEndLoc);
}
ExpectedStmt ASTNodeImporter::VisitNullStmt(NullStmt *S) {
ExpectedSLoc ToSemiLocOrErr = import(S->getSemiLoc());
if (!ToSemiLocOrErr)
return ToSemiLocOrErr.takeError();
return new (Importer.getToContext()) NullStmt(
*ToSemiLocOrErr, S->hasLeadingEmptyMacro());
}
ExpectedStmt ASTNodeImporter::VisitCompoundStmt(CompoundStmt *S) {
SmallVector<Stmt *, 8> ToStmts(S->size());
if (Error Err = ImportContainerChecked(S->body(), ToStmts))
return std::move(Err);
ExpectedSLoc ToLBracLocOrErr = import(S->getLBracLoc());
if (!ToLBracLocOrErr)
return ToLBracLocOrErr.takeError();
ExpectedSLoc ToRBracLocOrErr = import(S->getRBracLoc());
if (!ToRBracLocOrErr)
return ToRBracLocOrErr.takeError();
FPOptionsOverride FPO =
S->hasStoredFPFeatures() ? S->getStoredFPFeatures() : FPOptionsOverride();
return CompoundStmt::Create(Importer.getToContext(), ToStmts, FPO,
*ToLBracLocOrErr, *ToRBracLocOrErr);
}
ExpectedStmt ASTNodeImporter::VisitCaseStmt(CaseStmt *S) {
Error Err = Error::success();
auto ToLHS = importChecked(Err, S->getLHS());
auto ToRHS = importChecked(Err, S->getRHS());
auto ToSubStmt = importChecked(Err, S->getSubStmt());
auto ToCaseLoc = importChecked(Err, S->getCaseLoc());
auto ToEllipsisLoc = importChecked(Err, S->getEllipsisLoc());
auto ToColonLoc = importChecked(Err, S->getColonLoc());
if (Err)
return std::move(Err);
auto *ToStmt = CaseStmt::Create(Importer.getToContext(), ToLHS, ToRHS,
ToCaseLoc, ToEllipsisLoc, ToColonLoc);
ToStmt->setSubStmt(ToSubStmt);
return ToStmt;
}
ExpectedStmt ASTNodeImporter::VisitDefaultStmt(DefaultStmt *S) {
Error Err = Error::success();
auto ToDefaultLoc = importChecked(Err, S->getDefaultLoc());
auto ToColonLoc = importChecked(Err, S->getColonLoc());
auto ToSubStmt = importChecked(Err, S->getSubStmt());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) DefaultStmt(
ToDefaultLoc, ToColonLoc, ToSubStmt);
}
ExpectedStmt ASTNodeImporter::VisitLabelStmt(LabelStmt *S) {
Error Err = Error::success();
auto ToIdentLoc = importChecked(Err, S->getIdentLoc());
auto ToLabelDecl = importChecked(Err, S->getDecl());
auto ToSubStmt = importChecked(Err, S->getSubStmt());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) LabelStmt(
ToIdentLoc, ToLabelDecl, ToSubStmt);
}
ExpectedStmt ASTNodeImporter::VisitAttributedStmt(AttributedStmt *S) {
ExpectedSLoc ToAttrLocOrErr = import(S->getAttrLoc());
if (!ToAttrLocOrErr)
return ToAttrLocOrErr.takeError();
ArrayRef<const Attr*> FromAttrs(S->getAttrs());
SmallVector<const Attr *, 1> ToAttrs(FromAttrs.size());
if (Error Err = ImportContainerChecked(FromAttrs, ToAttrs))
return std::move(Err);
ExpectedStmt ToSubStmtOrErr = import(S->getSubStmt());
if (!ToSubStmtOrErr)
return ToSubStmtOrErr.takeError();
return AttributedStmt::Create(
Importer.getToContext(), *ToAttrLocOrErr, ToAttrs, *ToSubStmtOrErr);
}
ExpectedStmt ASTNodeImporter::VisitIfStmt(IfStmt *S) {
Error Err = Error::success();
auto ToIfLoc = importChecked(Err, S->getIfLoc());
auto ToInit = importChecked(Err, S->getInit());
auto ToConditionVariable = importChecked(Err, S->getConditionVariable());
auto ToCond = importChecked(Err, S->getCond());
auto ToLParenLoc = importChecked(Err, S->getLParenLoc());
auto ToRParenLoc = importChecked(Err, S->getRParenLoc());
auto ToThen = importChecked(Err, S->getThen());
auto ToElseLoc = importChecked(Err, S->getElseLoc());
auto ToElse = importChecked(Err, S->getElse());
if (Err)
return std::move(Err);
return IfStmt::Create(Importer.getToContext(), ToIfLoc, S->getStatementKind(),
ToInit, ToConditionVariable, ToCond, ToLParenLoc,
ToRParenLoc, ToThen, ToElseLoc, ToElse);
}
ExpectedStmt ASTNodeImporter::VisitSwitchStmt(SwitchStmt *S) {
Error Err = Error::success();
auto ToInit = importChecked(Err, S->getInit());
auto ToConditionVariable = importChecked(Err, S->getConditionVariable());
auto ToCond = importChecked(Err, S->getCond());
auto ToLParenLoc = importChecked(Err, S->getLParenLoc());
auto ToRParenLoc = importChecked(Err, S->getRParenLoc());
auto ToBody = importChecked(Err, S->getBody());
auto ToSwitchLoc = importChecked(Err, S->getSwitchLoc());
if (Err)
return std::move(Err);
auto *ToStmt =
SwitchStmt::Create(Importer.getToContext(), ToInit, ToConditionVariable,
ToCond, ToLParenLoc, ToRParenLoc);
ToStmt->setBody(ToBody);
ToStmt->setSwitchLoc(ToSwitchLoc);
// Now we have to re-chain the cases.
SwitchCase *LastChainedSwitchCase = nullptr;
for (SwitchCase *SC = S->getSwitchCaseList(); SC != nullptr;
SC = SC->getNextSwitchCase()) {
Expected<SwitchCase *> ToSCOrErr = import(SC);
if (!ToSCOrErr)
return ToSCOrErr.takeError();
if (LastChainedSwitchCase)
LastChainedSwitchCase->setNextSwitchCase(*ToSCOrErr);
else
ToStmt->setSwitchCaseList(*ToSCOrErr);
LastChainedSwitchCase = *ToSCOrErr;
}
return ToStmt;
}
ExpectedStmt ASTNodeImporter::VisitWhileStmt(WhileStmt *S) {
Error Err = Error::success();
auto ToConditionVariable = importChecked(Err, S->getConditionVariable());
auto ToCond = importChecked(Err, S->getCond());
auto ToBody = importChecked(Err, S->getBody());
auto ToWhileLoc = importChecked(Err, S->getWhileLoc());
auto ToLParenLoc = importChecked(Err, S->getLParenLoc());
auto ToRParenLoc = importChecked(Err, S->getRParenLoc());
if (Err)
return std::move(Err);
return WhileStmt::Create(Importer.getToContext(), ToConditionVariable, ToCond,
ToBody, ToWhileLoc, ToLParenLoc, ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitDoStmt(DoStmt *S) {
Error Err = Error::success();
auto ToBody = importChecked(Err, S->getBody());
auto ToCond = importChecked(Err, S->getCond());
auto ToDoLoc = importChecked(Err, S->getDoLoc());
auto ToWhileLoc = importChecked(Err, S->getWhileLoc());
auto ToRParenLoc = importChecked(Err, S->getRParenLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) DoStmt(
ToBody, ToCond, ToDoLoc, ToWhileLoc, ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitForStmt(ForStmt *S) {
Error Err = Error::success();
auto ToInit = importChecked(Err, S->getInit());
auto ToCond = importChecked(Err, S->getCond());
auto ToConditionVariable = importChecked(Err, S->getConditionVariable());
auto ToInc = importChecked(Err, S->getInc());
auto ToBody = importChecked(Err, S->getBody());
auto ToForLoc = importChecked(Err, S->getForLoc());
auto ToLParenLoc = importChecked(Err, S->getLParenLoc());
auto ToRParenLoc = importChecked(Err, S->getRParenLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ForStmt(
Importer.getToContext(),
ToInit, ToCond, ToConditionVariable, ToInc, ToBody, ToForLoc, ToLParenLoc,
ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitGotoStmt(GotoStmt *S) {
Error Err = Error::success();
auto ToLabel = importChecked(Err, S->getLabel());
auto ToGotoLoc = importChecked(Err, S->getGotoLoc());
auto ToLabelLoc = importChecked(Err, S->getLabelLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) GotoStmt(
ToLabel, ToGotoLoc, ToLabelLoc);
}
ExpectedStmt ASTNodeImporter::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
Error Err = Error::success();
auto ToGotoLoc = importChecked(Err, S->getGotoLoc());
auto ToStarLoc = importChecked(Err, S->getStarLoc());
auto ToTarget = importChecked(Err, S->getTarget());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) IndirectGotoStmt(
ToGotoLoc, ToStarLoc, ToTarget);
}
ExpectedStmt ASTNodeImporter::VisitContinueStmt(ContinueStmt *S) {
ExpectedSLoc ToContinueLocOrErr = import(S->getContinueLoc());
if (!ToContinueLocOrErr)
return ToContinueLocOrErr.takeError();
return new (Importer.getToContext()) ContinueStmt(*ToContinueLocOrErr);
}
ExpectedStmt ASTNodeImporter::VisitBreakStmt(BreakStmt *S) {
auto ToBreakLocOrErr = import(S->getBreakLoc());
if (!ToBreakLocOrErr)
return ToBreakLocOrErr.takeError();
return new (Importer.getToContext()) BreakStmt(*ToBreakLocOrErr);
}
ExpectedStmt ASTNodeImporter::VisitReturnStmt(ReturnStmt *S) {
Error Err = Error::success();
auto ToReturnLoc = importChecked(Err, S->getReturnLoc());
auto ToRetValue = importChecked(Err, S->getRetValue());
auto ToNRVOCandidate = importChecked(Err, S->getNRVOCandidate());
if (Err)
return std::move(Err);
return ReturnStmt::Create(Importer.getToContext(), ToReturnLoc, ToRetValue,
ToNRVOCandidate);
}
ExpectedStmt ASTNodeImporter::VisitCXXCatchStmt(CXXCatchStmt *S) {
Error Err = Error::success();
auto ToCatchLoc = importChecked(Err, S->getCatchLoc());
auto ToExceptionDecl = importChecked(Err, S->getExceptionDecl());
auto ToHandlerBlock = importChecked(Err, S->getHandlerBlock());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) CXXCatchStmt (
ToCatchLoc, ToExceptionDecl, ToHandlerBlock);
}
ExpectedStmt ASTNodeImporter::VisitCXXTryStmt(CXXTryStmt *S) {
ExpectedSLoc ToTryLocOrErr = import(S->getTryLoc());
if (!ToTryLocOrErr)
return ToTryLocOrErr.takeError();
ExpectedStmt ToTryBlockOrErr = import(S->getTryBlock());
if (!ToTryBlockOrErr)
return ToTryBlockOrErr.takeError();
SmallVector<Stmt *, 1> ToHandlers(S->getNumHandlers());
for (unsigned HI = 0, HE = S->getNumHandlers(); HI != HE; ++HI) {
CXXCatchStmt *FromHandler = S->getHandler(HI);
if (auto ToHandlerOrErr = import(FromHandler))
ToHandlers[HI] = *ToHandlerOrErr;
else
return ToHandlerOrErr.takeError();
}
return CXXTryStmt::Create(Importer.getToContext(), *ToTryLocOrErr,
cast<CompoundStmt>(*ToTryBlockOrErr), ToHandlers);
}
ExpectedStmt ASTNodeImporter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
Error Err = Error::success();
auto ToInit = importChecked(Err, S->getInit());
auto ToRangeStmt = importChecked(Err, S->getRangeStmt());
auto ToBeginStmt = importChecked(Err, S->getBeginStmt());
auto ToEndStmt = importChecked(Err, S->getEndStmt());
auto ToCond = importChecked(Err, S->getCond());
auto ToInc = importChecked(Err, S->getInc());
auto ToLoopVarStmt = importChecked(Err, S->getLoopVarStmt());
auto ToBody = importChecked(Err, S->getBody());
auto ToForLoc = importChecked(Err, S->getForLoc());
auto ToCoawaitLoc = importChecked(Err, S->getCoawaitLoc());
auto ToColonLoc = importChecked(Err, S->getColonLoc());
auto ToRParenLoc = importChecked(Err, S->getRParenLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) CXXForRangeStmt(
ToInit, ToRangeStmt, ToBeginStmt, ToEndStmt, ToCond, ToInc, ToLoopVarStmt,
ToBody, ToForLoc, ToCoawaitLoc, ToColonLoc, ToRParenLoc);
}
ExpectedStmt
ASTNodeImporter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
Error Err = Error::success();
auto ToElement = importChecked(Err, S->getElement());
auto ToCollection = importChecked(Err, S->getCollection());
auto ToBody = importChecked(Err, S->getBody());
auto ToForLoc = importChecked(Err, S->getForLoc());
auto ToRParenLoc = importChecked(Err, S->getRParenLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ObjCForCollectionStmt(ToElement,
ToCollection,
ToBody,
ToForLoc,
ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
Error Err = Error::success();
auto ToAtCatchLoc = importChecked(Err, S->getAtCatchLoc());
auto ToRParenLoc = importChecked(Err, S->getRParenLoc());
auto ToCatchParamDecl = importChecked(Err, S->getCatchParamDecl());
auto ToCatchBody = importChecked(Err, S->getCatchBody());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ObjCAtCatchStmt (
ToAtCatchLoc, ToRParenLoc, ToCatchParamDecl, ToCatchBody);
}
ExpectedStmt ASTNodeImporter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
ExpectedSLoc ToAtFinallyLocOrErr = import(S->getAtFinallyLoc());
if (!ToAtFinallyLocOrErr)
return ToAtFinallyLocOrErr.takeError();
ExpectedStmt ToAtFinallyStmtOrErr = import(S->getFinallyBody());
if (!ToAtFinallyStmtOrErr)
return ToAtFinallyStmtOrErr.takeError();
return new (Importer.getToContext()) ObjCAtFinallyStmt(*ToAtFinallyLocOrErr,
*ToAtFinallyStmtOrErr);
}
ExpectedStmt ASTNodeImporter::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
Error Err = Error::success();
auto ToAtTryLoc = importChecked(Err, S->getAtTryLoc());
auto ToTryBody = importChecked(Err, S->getTryBody());
auto ToFinallyStmt = importChecked(Err, S->getFinallyStmt());
if (Err)
return std::move(Err);
SmallVector<Stmt *, 1> ToCatchStmts(S->getNumCatchStmts());
for (unsigned CI = 0, CE = S->getNumCatchStmts(); CI != CE; ++CI) {
ObjCAtCatchStmt *FromCatchStmt = S->getCatchStmt(CI);
if (ExpectedStmt ToCatchStmtOrErr = import(FromCatchStmt))
ToCatchStmts[CI] = *ToCatchStmtOrErr;
else
return ToCatchStmtOrErr.takeError();
}
return ObjCAtTryStmt::Create(Importer.getToContext(),
ToAtTryLoc, ToTryBody,
ToCatchStmts.begin(), ToCatchStmts.size(),
ToFinallyStmt);
}
ExpectedStmt
ASTNodeImporter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
Error Err = Error::success();
auto ToAtSynchronizedLoc = importChecked(Err, S->getAtSynchronizedLoc());
auto ToSynchExpr = importChecked(Err, S->getSynchExpr());
auto ToSynchBody = importChecked(Err, S->getSynchBody());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ObjCAtSynchronizedStmt(
ToAtSynchronizedLoc, ToSynchExpr, ToSynchBody);
}
ExpectedStmt ASTNodeImporter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
ExpectedSLoc ToThrowLocOrErr = import(S->getThrowLoc());
if (!ToThrowLocOrErr)
return ToThrowLocOrErr.takeError();
ExpectedExpr ToThrowExprOrErr = import(S->getThrowExpr());
if (!ToThrowExprOrErr)
return ToThrowExprOrErr.takeError();
return new (Importer.getToContext()) ObjCAtThrowStmt(
*ToThrowLocOrErr, *ToThrowExprOrErr);
}
ExpectedStmt ASTNodeImporter::VisitObjCAutoreleasePoolStmt(
ObjCAutoreleasePoolStmt *S) {
ExpectedSLoc ToAtLocOrErr = import(S->getAtLoc());
if (!ToAtLocOrErr)
return ToAtLocOrErr.takeError();
ExpectedStmt ToSubStmtOrErr = import(S->getSubStmt());
if (!ToSubStmtOrErr)
return ToSubStmtOrErr.takeError();
return new (Importer.getToContext()) ObjCAutoreleasePoolStmt(*ToAtLocOrErr,
*ToSubStmtOrErr);
}
//----------------------------------------------------------------------------
// Import Expressions
//----------------------------------------------------------------------------
ExpectedStmt ASTNodeImporter::VisitExpr(Expr *E) {
Importer.FromDiag(E->getBeginLoc(), diag::err_unsupported_ast_node)
<< E->getStmtClassName();
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
}
ExpectedStmt ASTNodeImporter::VisitSourceLocExpr(SourceLocExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto BLoc = importChecked(Err, E->getBeginLoc());
auto RParenLoc = importChecked(Err, E->getEndLoc());
if (Err)
return std::move(Err);
auto ParentContextOrErr = Importer.ImportContext(E->getParentContext());
if (!ParentContextOrErr)
return ParentContextOrErr.takeError();
return new (Importer.getToContext())
SourceLocExpr(Importer.getToContext(), E->getIdentKind(), ToType, BLoc,
RParenLoc, *ParentContextOrErr);
}
ExpectedStmt ASTNodeImporter::VisitVAArgExpr(VAArgExpr *E) {
Error Err = Error::success();
auto ToBuiltinLoc = importChecked(Err, E->getBuiltinLoc());
auto ToSubExpr = importChecked(Err, E->getSubExpr());
auto ToWrittenTypeInfo = importChecked(Err, E->getWrittenTypeInfo());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) VAArgExpr(
ToBuiltinLoc, ToSubExpr, ToWrittenTypeInfo, ToRParenLoc, ToType,
E->isMicrosoftABI());
}
ExpectedStmt ASTNodeImporter::VisitChooseExpr(ChooseExpr *E) {
Error Err = Error::success();
auto ToCond = importChecked(Err, E->getCond());
auto ToLHS = importChecked(Err, E->getLHS());
auto ToRHS = importChecked(Err, E->getRHS());
auto ToBuiltinLoc = importChecked(Err, E->getBuiltinLoc());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
ExprValueKind VK = E->getValueKind();
ExprObjectKind OK = E->getObjectKind();
// The value of CondIsTrue only matters if the value is not
// condition-dependent.
bool CondIsTrue = !E->isConditionDependent() && E->isConditionTrue();
return new (Importer.getToContext())
ChooseExpr(ToBuiltinLoc, ToCond, ToLHS, ToRHS, ToType, VK, OK,
ToRParenLoc, CondIsTrue);
}
ExpectedStmt ASTNodeImporter::VisitConvertVectorExpr(ConvertVectorExpr *E) {
Error Err = Error::success();
auto *ToSrcExpr = importChecked(Err, E->getSrcExpr());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
auto ToBuiltinLoc = importChecked(Err, E->getBuiltinLoc());
auto ToType = importChecked(Err, E->getType());
auto *ToTSI = importChecked(Err, E->getTypeSourceInfo());
if (Err)
return std::move(Err);
return new (Importer.getToContext())
ConvertVectorExpr(ToSrcExpr, ToTSI, ToType, E->getValueKind(),
E->getObjectKind(), ToBuiltinLoc, ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
Error Err = Error::success();
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
auto ToBeginLoc = importChecked(Err, E->getBeginLoc());
auto ToType = importChecked(Err, E->getType());
const unsigned NumSubExprs = E->getNumSubExprs();
llvm::SmallVector<Expr *, 8> ToSubExprs;
llvm::ArrayRef<Expr *> FromSubExprs(E->getSubExprs(), NumSubExprs);
ToSubExprs.resize(NumSubExprs);
if ((Err = ImportContainerChecked(FromSubExprs, ToSubExprs)))
return std::move(Err);
return new (Importer.getToContext()) ShuffleVectorExpr(
Importer.getToContext(), ToSubExprs, ToType, ToBeginLoc, ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitGNUNullExpr(GNUNullExpr *E) {
ExpectedType TypeOrErr = import(E->getType());
if (!TypeOrErr)
return TypeOrErr.takeError();
ExpectedSLoc BeginLocOrErr = import(E->getBeginLoc());
if (!BeginLocOrErr)
return BeginLocOrErr.takeError();
return new (Importer.getToContext()) GNUNullExpr(*TypeOrErr, *BeginLocOrErr);
}
ExpectedStmt
ASTNodeImporter::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
Error Err = Error::success();
auto ToGenericLoc = importChecked(Err, E->getGenericLoc());
Expr *ToControllingExpr = nullptr;
TypeSourceInfo *ToControllingType = nullptr;
if (E->isExprPredicate())
ToControllingExpr = importChecked(Err, E->getControllingExpr());
else
ToControllingType = importChecked(Err, E->getControllingType());
assert((ToControllingExpr || ToControllingType) &&
"Either the controlling expr or type must be nonnull");
auto ToDefaultLoc = importChecked(Err, E->getDefaultLoc());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
ArrayRef<const TypeSourceInfo *> FromAssocTypes(E->getAssocTypeSourceInfos());
SmallVector<TypeSourceInfo *, 1> ToAssocTypes(FromAssocTypes.size());
if (Error Err = ImportContainerChecked(FromAssocTypes, ToAssocTypes))
return std::move(Err);
ArrayRef<const Expr *> FromAssocExprs(E->getAssocExprs());
SmallVector<Expr *, 1> ToAssocExprs(FromAssocExprs.size());
if (Error Err = ImportContainerChecked(FromAssocExprs, ToAssocExprs))
return std::move(Err);
const ASTContext &ToCtx = Importer.getToContext();
if (E->isResultDependent()) {
if (ToControllingExpr) {
return GenericSelectionExpr::Create(
ToCtx, ToGenericLoc, ToControllingExpr, llvm::ArrayRef(ToAssocTypes),
llvm::ArrayRef(ToAssocExprs), ToDefaultLoc, ToRParenLoc,
E->containsUnexpandedParameterPack());
}
return GenericSelectionExpr::Create(
ToCtx, ToGenericLoc, ToControllingType, llvm::ArrayRef(ToAssocTypes),
llvm::ArrayRef(ToAssocExprs), ToDefaultLoc, ToRParenLoc,
E->containsUnexpandedParameterPack());
}
if (ToControllingExpr) {
return GenericSelectionExpr::Create(
ToCtx, ToGenericLoc, ToControllingExpr, llvm::ArrayRef(ToAssocTypes),
llvm::ArrayRef(ToAssocExprs), ToDefaultLoc, ToRParenLoc,
E->containsUnexpandedParameterPack(), E->getResultIndex());
}
return GenericSelectionExpr::Create(
ToCtx, ToGenericLoc, ToControllingType, llvm::ArrayRef(ToAssocTypes),
llvm::ArrayRef(ToAssocExprs), ToDefaultLoc, ToRParenLoc,
E->containsUnexpandedParameterPack(), E->getResultIndex());
}
ExpectedStmt ASTNodeImporter::VisitPredefinedExpr(PredefinedExpr *E) {
Error Err = Error::success();
auto ToBeginLoc = importChecked(Err, E->getBeginLoc());
auto ToType = importChecked(Err, E->getType());
auto ToFunctionName = importChecked(Err, E->getFunctionName());
if (Err)
return std::move(Err);
return PredefinedExpr::Create(Importer.getToContext(), ToBeginLoc, ToType,
E->getIdentKind(), E->isTransparent(),
ToFunctionName);
}
ExpectedStmt ASTNodeImporter::VisitDeclRefExpr(DeclRefExpr *E) {
Error Err = Error::success();
auto ToQualifierLoc = importChecked(Err, E->getQualifierLoc());
auto ToTemplateKeywordLoc = importChecked(Err, E->getTemplateKeywordLoc());
auto ToDecl = importChecked(Err, E->getDecl());
auto ToLocation = importChecked(Err, E->getLocation());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
NamedDecl *ToFoundD = nullptr;
if (E->getDecl() != E->getFoundDecl()) {
auto FoundDOrErr = import(E->getFoundDecl());
if (!FoundDOrErr)
return FoundDOrErr.takeError();
ToFoundD = *FoundDOrErr;
}
TemplateArgumentListInfo ToTAInfo;
TemplateArgumentListInfo *ToResInfo = nullptr;
if (E->hasExplicitTemplateArgs()) {
if (Error Err =
ImportTemplateArgumentListInfo(E->getLAngleLoc(), E->getRAngleLoc(),
E->template_arguments(), ToTAInfo))
return std::move(Err);
ToResInfo = &ToTAInfo;
}
auto *ToE = DeclRefExpr::Create(
Importer.getToContext(), ToQualifierLoc, ToTemplateKeywordLoc, ToDecl,
E->refersToEnclosingVariableOrCapture(), ToLocation, ToType,
E->getValueKind(), ToFoundD, ToResInfo, E->isNonOdrUse());
if (E->hadMultipleCandidates())
ToE->setHadMultipleCandidates(true);
ToE->setIsImmediateEscalating(E->isImmediateEscalating());
return ToE;
}
ExpectedStmt ASTNodeImporter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
ExpectedType TypeOrErr = import(E->getType());
if (!TypeOrErr)
return TypeOrErr.takeError();
return new (Importer.getToContext()) ImplicitValueInitExpr(*TypeOrErr);
}
ExpectedStmt ASTNodeImporter::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
ExpectedExpr ToInitOrErr = import(E->getInit());
if (!ToInitOrErr)
return ToInitOrErr.takeError();
ExpectedSLoc ToEqualOrColonLocOrErr = import(E->getEqualOrColonLoc());
if (!ToEqualOrColonLocOrErr)
return ToEqualOrColonLocOrErr.takeError();
SmallVector<Expr *, 4> ToIndexExprs(E->getNumSubExprs() - 1);
// List elements from the second, the first is Init itself
for (unsigned I = 1, N = E->getNumSubExprs(); I < N; I++) {
if (ExpectedExpr ToArgOrErr = import(E->getSubExpr(I)))
ToIndexExprs[I - 1] = *ToArgOrErr;
else
return ToArgOrErr.takeError();
}
SmallVector<Designator, 4> ToDesignators(E->size());
if (Error Err = ImportContainerChecked(E->designators(), ToDesignators))
return std::move(Err);
return DesignatedInitExpr::Create(
Importer.getToContext(), ToDesignators,
ToIndexExprs, *ToEqualOrColonLocOrErr,
E->usesGNUSyntax(), *ToInitOrErr);
}
ExpectedStmt
ASTNodeImporter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedSLoc ToLocationOrErr = import(E->getLocation());
if (!ToLocationOrErr)
return ToLocationOrErr.takeError();
return new (Importer.getToContext()) CXXNullPtrLiteralExpr(
*ToTypeOrErr, *ToLocationOrErr);
}
ExpectedStmt ASTNodeImporter::VisitIntegerLiteral(IntegerLiteral *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedSLoc ToLocationOrErr = import(E->getLocation());
if (!ToLocationOrErr)
return ToLocationOrErr.takeError();
return IntegerLiteral::Create(
Importer.getToContext(), E->getValue(), *ToTypeOrErr, *ToLocationOrErr);
}
ExpectedStmt ASTNodeImporter::VisitFloatingLiteral(FloatingLiteral *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedSLoc ToLocationOrErr = import(E->getLocation());
if (!ToLocationOrErr)
return ToLocationOrErr.takeError();
return FloatingLiteral::Create(
Importer.getToContext(), E->getValue(), E->isExact(),
*ToTypeOrErr, *ToLocationOrErr);
}
ExpectedStmt ASTNodeImporter::VisitImaginaryLiteral(ImaginaryLiteral *E) {
auto ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedExpr ToSubExprOrErr = import(E->getSubExpr());
if (!ToSubExprOrErr)
return ToSubExprOrErr.takeError();
return new (Importer.getToContext()) ImaginaryLiteral(
*ToSubExprOrErr, *ToTypeOrErr);
}
ExpectedStmt ASTNodeImporter::VisitFixedPointLiteral(FixedPointLiteral *E) {
auto ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedSLoc ToLocationOrErr = import(E->getLocation());
if (!ToLocationOrErr)
return ToLocationOrErr.takeError();
return new (Importer.getToContext()) FixedPointLiteral(
Importer.getToContext(), E->getValue(), *ToTypeOrErr, *ToLocationOrErr,
Importer.getToContext().getFixedPointScale(*ToTypeOrErr));
}
ExpectedStmt ASTNodeImporter::VisitCharacterLiteral(CharacterLiteral *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedSLoc ToLocationOrErr = import(E->getLocation());
if (!ToLocationOrErr)
return ToLocationOrErr.takeError();
return new (Importer.getToContext()) CharacterLiteral(
E->getValue(), E->getKind(), *ToTypeOrErr, *ToLocationOrErr);
}
ExpectedStmt ASTNodeImporter::VisitStringLiteral(StringLiteral *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
SmallVector<SourceLocation, 4> ToLocations(E->getNumConcatenated());
if (Error Err = ImportArrayChecked(
E->tokloc_begin(), E->tokloc_end(), ToLocations.begin()))
return std::move(Err);
return StringLiteral::Create(
Importer.getToContext(), E->getBytes(), E->getKind(), E->isPascal(),
*ToTypeOrErr, ToLocations.data(), ToLocations.size());
}
ExpectedStmt ASTNodeImporter::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
Error Err = Error::success();
auto ToLParenLoc = importChecked(Err, E->getLParenLoc());
auto ToTypeSourceInfo = importChecked(Err, E->getTypeSourceInfo());
auto ToType = importChecked(Err, E->getType());
auto ToInitializer = importChecked(Err, E->getInitializer());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) CompoundLiteralExpr(
ToLParenLoc, ToTypeSourceInfo, ToType, E->getValueKind(),
ToInitializer, E->isFileScope());
}
ExpectedStmt ASTNodeImporter::VisitAtomicExpr(AtomicExpr *E) {
Error Err = Error::success();
auto ToBuiltinLoc = importChecked(Err, E->getBuiltinLoc());
auto ToType = importChecked(Err, E->getType());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
SmallVector<Expr *, 6> ToExprs(E->getNumSubExprs());
if (Error Err = ImportArrayChecked(
E->getSubExprs(), E->getSubExprs() + E->getNumSubExprs(),
ToExprs.begin()))
return std::move(Err);
return new (Importer.getToContext()) AtomicExpr(
ToBuiltinLoc, ToExprs, ToType, E->getOp(), ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitAddrLabelExpr(AddrLabelExpr *E) {
Error Err = Error::success();
auto ToAmpAmpLoc = importChecked(Err, E->getAmpAmpLoc());
auto ToLabelLoc = importChecked(Err, E->getLabelLoc());
auto ToLabel = importChecked(Err, E->getLabel());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) AddrLabelExpr(
ToAmpAmpLoc, ToLabelLoc, ToLabel, ToType);
}
ExpectedStmt ASTNodeImporter::VisitConstantExpr(ConstantExpr *E) {
Error Err = Error::success();
auto ToSubExpr = importChecked(Err, E->getSubExpr());
auto ToResult = importChecked(Err, E->getAPValueResult());
if (Err)
return std::move(Err);
return ConstantExpr::Create(Importer.getToContext(), ToSubExpr, ToResult);
}
ExpectedStmt ASTNodeImporter::VisitParenExpr(ParenExpr *E) {
Error Err = Error::success();
auto ToLParen = importChecked(Err, E->getLParen());
auto ToRParen = importChecked(Err, E->getRParen());
auto ToSubExpr = importChecked(Err, E->getSubExpr());
if (Err)
return std::move(Err);
return new (Importer.getToContext())
ParenExpr(ToLParen, ToRParen, ToSubExpr);
}
ExpectedStmt ASTNodeImporter::VisitParenListExpr(ParenListExpr *E) {
SmallVector<Expr *, 4> ToExprs(E->getNumExprs());
if (Error Err = ImportContainerChecked(E->exprs(), ToExprs))
return std::move(Err);
ExpectedSLoc ToLParenLocOrErr = import(E->getLParenLoc());
if (!ToLParenLocOrErr)
return ToLParenLocOrErr.takeError();
ExpectedSLoc ToRParenLocOrErr = import(E->getRParenLoc());
if (!ToRParenLocOrErr)
return ToRParenLocOrErr.takeError();
return ParenListExpr::Create(Importer.getToContext(), *ToLParenLocOrErr,
ToExprs, *ToRParenLocOrErr);
}
ExpectedStmt ASTNodeImporter::VisitStmtExpr(StmtExpr *E) {
Error Err = Error::success();
auto ToSubStmt = importChecked(Err, E->getSubStmt());
auto ToType = importChecked(Err, E->getType());
auto ToLParenLoc = importChecked(Err, E->getLParenLoc());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext())
StmtExpr(ToSubStmt, ToType, ToLParenLoc, ToRParenLoc,
E->getTemplateDepth());
}
ExpectedStmt ASTNodeImporter::VisitUnaryOperator(UnaryOperator *E) {
Error Err = Error::success();
auto ToSubExpr = importChecked(Err, E->getSubExpr());
auto ToType = importChecked(Err, E->getType());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
if (Err)
return std::move(Err);
auto *UO = UnaryOperator::CreateEmpty(Importer.getToContext(),
E->hasStoredFPFeatures());
UO->setType(ToType);
UO->setSubExpr(ToSubExpr);
UO->setOpcode(E->getOpcode());
UO->setOperatorLoc(ToOperatorLoc);
UO->setCanOverflow(E->canOverflow());
if (E->hasStoredFPFeatures())
UO->setStoredFPFeatures(E->getStoredFPFeatures());
return UO;
}
ExpectedStmt
ASTNodeImporter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
if (E->isArgumentType()) {
Expected<TypeSourceInfo *> ToArgumentTypeInfoOrErr =
import(E->getArgumentTypeInfo());
if (!ToArgumentTypeInfoOrErr)
return ToArgumentTypeInfoOrErr.takeError();
return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(
E->getKind(), *ToArgumentTypeInfoOrErr, ToType, ToOperatorLoc,
ToRParenLoc);
}
ExpectedExpr ToArgumentExprOrErr = import(E->getArgumentExpr());
if (!ToArgumentExprOrErr)
return ToArgumentExprOrErr.takeError();
return new (Importer.getToContext()) UnaryExprOrTypeTraitExpr(
E->getKind(), *ToArgumentExprOrErr, ToType, ToOperatorLoc, ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitBinaryOperator(BinaryOperator *E) {
Error Err = Error::success();
auto ToLHS = importChecked(Err, E->getLHS());
auto ToRHS = importChecked(Err, E->getRHS());
auto ToType = importChecked(Err, E->getType());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
if (Err)
return std::move(Err);
return BinaryOperator::Create(
Importer.getToContext(), ToLHS, ToRHS, E->getOpcode(), ToType,
E->getValueKind(), E->getObjectKind(), ToOperatorLoc,
E->getFPFeatures());
}
ExpectedStmt ASTNodeImporter::VisitConditionalOperator(ConditionalOperator *E) {
Error Err = Error::success();
auto ToCond = importChecked(Err, E->getCond());
auto ToQuestionLoc = importChecked(Err, E->getQuestionLoc());
auto ToLHS = importChecked(Err, E->getLHS());
auto ToColonLoc = importChecked(Err, E->getColonLoc());
auto ToRHS = importChecked(Err, E->getRHS());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ConditionalOperator(
ToCond, ToQuestionLoc, ToLHS, ToColonLoc, ToRHS, ToType,
E->getValueKind(), E->getObjectKind());
}
ExpectedStmt
ASTNodeImporter::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
Error Err = Error::success();
auto ToCommon = importChecked(Err, E->getCommon());
auto ToOpaqueValue = importChecked(Err, E->getOpaqueValue());
auto ToCond = importChecked(Err, E->getCond());
auto ToTrueExpr = importChecked(Err, E->getTrueExpr());
auto ToFalseExpr = importChecked(Err, E->getFalseExpr());
auto ToQuestionLoc = importChecked(Err, E->getQuestionLoc());
auto ToColonLoc = importChecked(Err, E->getColonLoc());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) BinaryConditionalOperator(
ToCommon, ToOpaqueValue, ToCond, ToTrueExpr, ToFalseExpr,
ToQuestionLoc, ToColonLoc, ToType, E->getValueKind(),
E->getObjectKind());
}
ExpectedStmt ASTNodeImporter::VisitCXXRewrittenBinaryOperator(
CXXRewrittenBinaryOperator *E) {
Error Err = Error::success();
auto ToSemanticForm = importChecked(Err, E->getSemanticForm());
if (Err)
return std::move(Err);
return new (Importer.getToContext())
CXXRewrittenBinaryOperator(ToSemanticForm, E->isReversed());
}
ExpectedStmt ASTNodeImporter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
Error Err = Error::success();
auto ToBeginLoc = importChecked(Err, E->getBeginLoc());
auto ToQueriedTypeSourceInfo =
importChecked(Err, E->getQueriedTypeSourceInfo());
auto ToDimensionExpression = importChecked(Err, E->getDimensionExpression());
auto ToEndLoc = importChecked(Err, E->getEndLoc());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ArrayTypeTraitExpr(
ToBeginLoc, E->getTrait(), ToQueriedTypeSourceInfo, E->getValue(),
ToDimensionExpression, ToEndLoc, ToType);
}
ExpectedStmt ASTNodeImporter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
Error Err = Error::success();
auto ToBeginLoc = importChecked(Err, E->getBeginLoc());
auto ToQueriedExpression = importChecked(Err, E->getQueriedExpression());
auto ToEndLoc = importChecked(Err, E->getEndLoc());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ExpressionTraitExpr(
ToBeginLoc, E->getTrait(), ToQueriedExpression, E->getValue(),
ToEndLoc, ToType);
}
ExpectedStmt ASTNodeImporter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
Error Err = Error::success();
auto ToLocation = importChecked(Err, E->getLocation());
auto ToType = importChecked(Err, E->getType());
auto ToSourceExpr = importChecked(Err, E->getSourceExpr());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) OpaqueValueExpr(
ToLocation, ToType, E->getValueKind(), E->getObjectKind(), ToSourceExpr);
}
ExpectedStmt ASTNodeImporter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
Error Err = Error::success();
auto ToLHS = importChecked(Err, E->getLHS());
auto ToRHS = importChecked(Err, E->getRHS());
auto ToType = importChecked(Err, E->getType());
auto ToRBracketLoc = importChecked(Err, E->getRBracketLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ArraySubscriptExpr(
ToLHS, ToRHS, ToType, E->getValueKind(), E->getObjectKind(),
ToRBracketLoc);
}
ExpectedStmt
ASTNodeImporter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
Error Err = Error::success();
auto ToLHS = importChecked(Err, E->getLHS());
auto ToRHS = importChecked(Err, E->getRHS());
auto ToType = importChecked(Err, E->getType());
auto ToComputationLHSType = importChecked(Err, E->getComputationLHSType());
auto ToComputationResultType =
importChecked(Err, E->getComputationResultType());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
if (Err)
return std::move(Err);
return CompoundAssignOperator::Create(
Importer.getToContext(), ToLHS, ToRHS, E->getOpcode(), ToType,
E->getValueKind(), E->getObjectKind(), ToOperatorLoc,
E->getFPFeatures(),
ToComputationLHSType, ToComputationResultType);
}
Expected<CXXCastPath>
ASTNodeImporter::ImportCastPath(CastExpr *CE) {
CXXCastPath Path;
for (auto I = CE->path_begin(), E = CE->path_end(); I != E; ++I) {
if (auto SpecOrErr = import(*I))
Path.push_back(*SpecOrErr);
else
return SpecOrErr.takeError();
}
return Path;
}
ExpectedStmt ASTNodeImporter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedExpr ToSubExprOrErr = import(E->getSubExpr());
if (!ToSubExprOrErr)
return ToSubExprOrErr.takeError();
Expected<CXXCastPath> ToBasePathOrErr = ImportCastPath(E);
if (!ToBasePathOrErr)
return ToBasePathOrErr.takeError();
return ImplicitCastExpr::Create(
Importer.getToContext(), *ToTypeOrErr, E->getCastKind(), *ToSubExprOrErr,
&(*ToBasePathOrErr), E->getValueKind(), E->getFPFeatures());
}
ExpectedStmt ASTNodeImporter::VisitExplicitCastExpr(ExplicitCastExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToSubExpr = importChecked(Err, E->getSubExpr());
auto ToTypeInfoAsWritten = importChecked(Err, E->getTypeInfoAsWritten());
if (Err)
return std::move(Err);
Expected<CXXCastPath> ToBasePathOrErr = ImportCastPath(E);
if (!ToBasePathOrErr)
return ToBasePathOrErr.takeError();
CXXCastPath *ToBasePath = &(*ToBasePathOrErr);
switch (E->getStmtClass()) {
case Stmt::CStyleCastExprClass: {
auto *CCE = cast<CStyleCastExpr>(E);
ExpectedSLoc ToLParenLocOrErr = import(CCE->getLParenLoc());
if (!ToLParenLocOrErr)
return ToLParenLocOrErr.takeError();
ExpectedSLoc ToRParenLocOrErr = import(CCE->getRParenLoc());
if (!ToRParenLocOrErr)
return ToRParenLocOrErr.takeError();
return CStyleCastExpr::Create(
Importer.getToContext(), ToType, E->getValueKind(), E->getCastKind(),
ToSubExpr, ToBasePath, CCE->getFPFeatures(), ToTypeInfoAsWritten,
*ToLParenLocOrErr, *ToRParenLocOrErr);
}
case Stmt::CXXFunctionalCastExprClass: {
auto *FCE = cast<CXXFunctionalCastExpr>(E);
ExpectedSLoc ToLParenLocOrErr = import(FCE->getLParenLoc());
if (!ToLParenLocOrErr)
return ToLParenLocOrErr.takeError();
ExpectedSLoc ToRParenLocOrErr = import(FCE->getRParenLoc());
if (!ToRParenLocOrErr)
return ToRParenLocOrErr.takeError();
return CXXFunctionalCastExpr::Create(
Importer.getToContext(), ToType, E->getValueKind(), ToTypeInfoAsWritten,
E->getCastKind(), ToSubExpr, ToBasePath, FCE->getFPFeatures(),
*ToLParenLocOrErr, *ToRParenLocOrErr);
}
case Stmt::ObjCBridgedCastExprClass: {
auto *OCE = cast<ObjCBridgedCastExpr>(E);
ExpectedSLoc ToLParenLocOrErr = import(OCE->getLParenLoc());
if (!ToLParenLocOrErr)
return ToLParenLocOrErr.takeError();
ExpectedSLoc ToBridgeKeywordLocOrErr = import(OCE->getBridgeKeywordLoc());
if (!ToBridgeKeywordLocOrErr)
return ToBridgeKeywordLocOrErr.takeError();
return new (Importer.getToContext()) ObjCBridgedCastExpr(
*ToLParenLocOrErr, OCE->getBridgeKind(), E->getCastKind(),
*ToBridgeKeywordLocOrErr, ToTypeInfoAsWritten, ToSubExpr);
}
case Stmt::BuiltinBitCastExprClass: {
auto *BBC = cast<BuiltinBitCastExpr>(E);
ExpectedSLoc ToKWLocOrErr = import(BBC->getBeginLoc());
if (!ToKWLocOrErr)
return ToKWLocOrErr.takeError();
ExpectedSLoc ToRParenLocOrErr = import(BBC->getEndLoc());
if (!ToRParenLocOrErr)
return ToRParenLocOrErr.takeError();
return new (Importer.getToContext()) BuiltinBitCastExpr(
ToType, E->getValueKind(), E->getCastKind(), ToSubExpr,
ToTypeInfoAsWritten, *ToKWLocOrErr, *ToRParenLocOrErr);
}
default:
llvm_unreachable("Cast expression of unsupported type!");
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
}
}
ExpectedStmt ASTNodeImporter::VisitOffsetOfExpr(OffsetOfExpr *E) {
SmallVector<OffsetOfNode, 4> ToNodes;
for (int I = 0, N = E->getNumComponents(); I < N; ++I) {
const OffsetOfNode &FromNode = E->getComponent(I);
SourceLocation ToBeginLoc, ToEndLoc;
if (FromNode.getKind() != OffsetOfNode::Base) {
Error Err = Error::success();
ToBeginLoc = importChecked(Err, FromNode.getBeginLoc());
ToEndLoc = importChecked(Err, FromNode.getEndLoc());
if (Err)
return std::move(Err);
}
switch (FromNode.getKind()) {
case OffsetOfNode::Array:
ToNodes.push_back(
OffsetOfNode(ToBeginLoc, FromNode.getArrayExprIndex(), ToEndLoc));
break;
case OffsetOfNode::Base: {
auto ToBSOrErr = import(FromNode.getBase());
if (!ToBSOrErr)
return ToBSOrErr.takeError();
ToNodes.push_back(OffsetOfNode(*ToBSOrErr));
break;
}
case OffsetOfNode::Field: {
auto ToFieldOrErr = import(FromNode.getField());
if (!ToFieldOrErr)
return ToFieldOrErr.takeError();
ToNodes.push_back(OffsetOfNode(ToBeginLoc, *ToFieldOrErr, ToEndLoc));
break;
}
case OffsetOfNode::Identifier: {
IdentifierInfo *ToII = Importer.Import(FromNode.getFieldName());
ToNodes.push_back(OffsetOfNode(ToBeginLoc, ToII, ToEndLoc));
break;
}
}
}
SmallVector<Expr *, 4> ToExprs(E->getNumExpressions());
for (int I = 0, N = E->getNumExpressions(); I < N; ++I) {
ExpectedExpr ToIndexExprOrErr = import(E->getIndexExpr(I));
if (!ToIndexExprOrErr)
return ToIndexExprOrErr.takeError();
ToExprs[I] = *ToIndexExprOrErr;
}
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToTypeSourceInfo = importChecked(Err, E->getTypeSourceInfo());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
return OffsetOfExpr::Create(
Importer.getToContext(), ToType, ToOperatorLoc, ToTypeSourceInfo, ToNodes,
ToExprs, ToRParenLoc);
}
ExpectedStmt ASTNodeImporter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToOperand = importChecked(Err, E->getOperand());
auto ToBeginLoc = importChecked(Err, E->getBeginLoc());
auto ToEndLoc = importChecked(Err, E->getEndLoc());
if (Err)
return std::move(Err);
CanThrowResult ToCanThrow;
if (E->isValueDependent())
ToCanThrow = CT_Dependent;
else
ToCanThrow = E->getValue() ? CT_Can : CT_Cannot;
return new (Importer.getToContext()) CXXNoexceptExpr(
ToType, ToOperand, ToCanThrow, ToBeginLoc, ToEndLoc);
}
ExpectedStmt ASTNodeImporter::VisitCXXThrowExpr(CXXThrowExpr *E) {
Error Err = Error::success();
auto ToSubExpr = importChecked(Err, E->getSubExpr());
auto ToType = importChecked(Err, E->getType());
auto ToThrowLoc = importChecked(Err, E->getThrowLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) CXXThrowExpr(
ToSubExpr, ToType, ToThrowLoc, E->isThrownVariableInScope());
}
ExpectedStmt ASTNodeImporter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
ExpectedSLoc ToUsedLocOrErr = import(E->getUsedLocation());
if (!ToUsedLocOrErr)
return ToUsedLocOrErr.takeError();
auto ToParamOrErr = import(E->getParam());
if (!ToParamOrErr)
return ToParamOrErr.takeError();
auto UsedContextOrErr = Importer.ImportContext(E->getUsedContext());
if (!UsedContextOrErr)
return UsedContextOrErr.takeError();
// Import the default arg if it was not imported yet.
// This is needed because it can happen that during the import of the
// default expression (from VisitParmVarDecl) the same ParmVarDecl is
// encountered here. The default argument for a ParmVarDecl is set in the
// ParmVarDecl only after it is imported (set in VisitParmVarDecl if not here,
// see VisitParmVarDecl).
ParmVarDecl *ToParam = *ToParamOrErr;
if (!ToParam->getDefaultArg()) {
std::optional<ParmVarDecl *> FromParam =
Importer.getImportedFromDecl(ToParam);
assert(FromParam && "ParmVarDecl was not imported?");
if (Error Err = ImportDefaultArgOfParmVarDecl(*FromParam, ToParam))
return std::move(Err);
}
Expr *RewrittenInit = nullptr;
if (E->hasRewrittenInit()) {
ExpectedExpr ExprOrErr = import(E->getRewrittenExpr());
if (!ExprOrErr)
return ExprOrErr.takeError();
RewrittenInit = ExprOrErr.get();
}
return CXXDefaultArgExpr::Create(Importer.getToContext(), *ToUsedLocOrErr,
*ToParamOrErr, RewrittenInit,
*UsedContextOrErr);
}
ExpectedStmt
ASTNodeImporter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToTypeSourceInfo = importChecked(Err, E->getTypeSourceInfo());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) CXXScalarValueInitExpr(
ToType, ToTypeSourceInfo, ToRParenLoc);
}
ExpectedStmt
ASTNodeImporter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
ExpectedExpr ToSubExprOrErr = import(E->getSubExpr());
if (!ToSubExprOrErr)
return ToSubExprOrErr.takeError();
auto ToDtorOrErr = import(E->getTemporary()->getDestructor());
if (!ToDtorOrErr)
return ToDtorOrErr.takeError();
ASTContext &ToCtx = Importer.getToContext();
CXXTemporary *Temp = CXXTemporary::Create(ToCtx, *ToDtorOrErr);
return CXXBindTemporaryExpr::Create(ToCtx, Temp, *ToSubExprOrErr);
}
ExpectedStmt
ASTNodeImporter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
Error Err = Error::success();
auto ToConstructor = importChecked(Err, E->getConstructor());
auto ToType = importChecked(Err, E->getType());
auto ToTypeSourceInfo = importChecked(Err, E->getTypeSourceInfo());
auto ToParenOrBraceRange = importChecked(Err, E->getParenOrBraceRange());
if (Err)
return std::move(Err);
SmallVector<Expr *, 8> ToArgs(E->getNumArgs());
if (Error Err = ImportContainerChecked(E->arguments(), ToArgs))
return std::move(Err);
return CXXTemporaryObjectExpr::Create(
Importer.getToContext(), ToConstructor, ToType, ToTypeSourceInfo, ToArgs,
ToParenOrBraceRange, E->hadMultipleCandidates(),
E->isListInitialization(), E->isStdInitListInitialization(),
E->requiresZeroInitialization());
}
ExpectedDecl ASTNodeImporter::VisitLifetimeExtendedTemporaryDecl(
LifetimeExtendedTemporaryDecl *D) {
DeclContext *DC, *LexicalDC;
if (Error Err = ImportDeclContext(D, DC, LexicalDC))
return std::move(Err);
Error Err = Error::success();
auto Temporary = importChecked(Err, D->getTemporaryExpr());
auto ExtendingDecl = importChecked(Err, D->getExtendingDecl());
if (Err)
return std::move(Err);
// FIXME: Should ManglingNumber get numbers associated with 'to' context?
LifetimeExtendedTemporaryDecl *To;
if (GetImportedOrCreateDecl(To, D, Temporary, ExtendingDecl,
D->getManglingNumber()))
return To;
To->setLexicalDeclContext(LexicalDC);
LexicalDC->addDeclInternal(To);
return To;
}
ExpectedStmt
ASTNodeImporter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
Expr *ToTemporaryExpr = importChecked(
Err, E->getLifetimeExtendedTemporaryDecl() ? nullptr : E->getSubExpr());
auto ToMaterializedDecl =
importChecked(Err, E->getLifetimeExtendedTemporaryDecl());
if (Err)
return std::move(Err);
if (!ToTemporaryExpr)
ToTemporaryExpr = cast<Expr>(ToMaterializedDecl->getTemporaryExpr());
auto *ToMTE = new (Importer.getToContext()) MaterializeTemporaryExpr(
ToType, ToTemporaryExpr, E->isBoundToLvalueReference(),
ToMaterializedDecl);
return ToMTE;
}
ExpectedStmt ASTNodeImporter::VisitPackExpansionExpr(PackExpansionExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToPattern = importChecked(Err, E->getPattern());
auto ToEllipsisLoc = importChecked(Err, E->getEllipsisLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) PackExpansionExpr(
ToType, ToPattern, ToEllipsisLoc, E->getNumExpansions());
}
ExpectedStmt ASTNodeImporter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
Error Err = Error::success();
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
auto ToPack = importChecked(Err, E->getPack());
auto ToPackLoc = importChecked(Err, E->getPackLoc());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
std::optional<unsigned> Length;
if (!E->isValueDependent())
Length = E->getPackLength();
SmallVector<TemplateArgument, 8> ToPartialArguments;
if (E->isPartiallySubstituted()) {
if (Error Err = ImportTemplateArguments(E->getPartialArguments(),
ToPartialArguments))
return std::move(Err);
}
return SizeOfPackExpr::Create(
Importer.getToContext(), ToOperatorLoc, ToPack, ToPackLoc, ToRParenLoc,
Length, ToPartialArguments);
}
ExpectedStmt ASTNodeImporter::VisitCXXNewExpr(CXXNewExpr *E) {
Error Err = Error::success();
auto ToOperatorNew = importChecked(Err, E->getOperatorNew());
auto ToOperatorDelete = importChecked(Err, E->getOperatorDelete());
auto ToTypeIdParens = importChecked(Err, E->getTypeIdParens());
auto ToArraySize = importChecked(Err, E->getArraySize());
auto ToInitializer = importChecked(Err, E->getInitializer());
auto ToType = importChecked(Err, E->getType());
auto ToAllocatedTypeSourceInfo =
importChecked(Err, E->getAllocatedTypeSourceInfo());
auto ToSourceRange = importChecked(Err, E->getSourceRange());
auto ToDirectInitRange = importChecked(Err, E->getDirectInitRange());
if (Err)
return std::move(Err);
SmallVector<Expr *, 4> ToPlacementArgs(E->getNumPlacementArgs());
if (Error Err =
ImportContainerChecked(E->placement_arguments(), ToPlacementArgs))
return std::move(Err);
return CXXNewExpr::Create(
Importer.getToContext(), E->isGlobalNew(), ToOperatorNew,
ToOperatorDelete, E->passAlignment(), E->doesUsualArrayDeleteWantSize(),
ToPlacementArgs, ToTypeIdParens, ToArraySize, E->getInitializationStyle(),
ToInitializer, ToType, ToAllocatedTypeSourceInfo, ToSourceRange,
ToDirectInitRange);
}
ExpectedStmt ASTNodeImporter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToOperatorDelete = importChecked(Err, E->getOperatorDelete());
auto ToArgument = importChecked(Err, E->getArgument());
auto ToBeginLoc = importChecked(Err, E->getBeginLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) CXXDeleteExpr(
ToType, E->isGlobalDelete(), E->isArrayForm(), E->isArrayFormAsWritten(),
E->doesUsualArrayDeleteWantSize(), ToOperatorDelete, ToArgument,
ToBeginLoc);
}
ExpectedStmt ASTNodeImporter::VisitCXXConstructExpr(CXXConstructExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToLocation = importChecked(Err, E->getLocation());
auto ToConstructor = importChecked(Err, E->getConstructor());
auto ToParenOrBraceRange = importChecked(Err, E->getParenOrBraceRange());
if (Err)
return std::move(Err);
SmallVector<Expr *, 6> ToArgs(E->getNumArgs());
if (Error Err = ImportContainerChecked(E->arguments(), ToArgs))
return std::move(Err);
CXXConstructExpr *ToE = CXXConstructExpr::Create(
Importer.getToContext(), ToType, ToLocation, ToConstructor,
E->isElidable(), ToArgs, E->hadMultipleCandidates(),
E->isListInitialization(), E->isStdInitListInitialization(),
E->requiresZeroInitialization(), E->getConstructionKind(),
ToParenOrBraceRange);
ToE->setIsImmediateEscalating(E->isImmediateEscalating());
return ToE;
}
ExpectedStmt ASTNodeImporter::VisitExprWithCleanups(ExprWithCleanups *E) {
ExpectedExpr ToSubExprOrErr = import(E->getSubExpr());
if (!ToSubExprOrErr)
return ToSubExprOrErr.takeError();
SmallVector<ExprWithCleanups::CleanupObject, 8> ToObjects(E->getNumObjects());
if (Error Err = ImportContainerChecked(E->getObjects(), ToObjects))
return std::move(Err);
return ExprWithCleanups::Create(
Importer.getToContext(), *ToSubExprOrErr, E->cleanupsHaveSideEffects(),
ToObjects);
}
ExpectedStmt ASTNodeImporter::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
Error Err = Error::success();
auto ToCallee = importChecked(Err, E->getCallee());
auto ToType = importChecked(Err, E->getType());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
SmallVector<Expr *, 4> ToArgs(E->getNumArgs());
if (Error Err = ImportContainerChecked(E->arguments(), ToArgs))
return std::move(Err);
return CXXMemberCallExpr::Create(Importer.getToContext(), ToCallee, ToArgs,
ToType, E->getValueKind(), ToRParenLoc,
E->getFPFeatures());
}
ExpectedStmt ASTNodeImporter::VisitCXXThisExpr(CXXThisExpr *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedSLoc ToLocationOrErr = import(E->getLocation());
if (!ToLocationOrErr)
return ToLocationOrErr.takeError();
return CXXThisExpr::Create(Importer.getToContext(), *ToLocationOrErr,
*ToTypeOrErr, E->isImplicit());
}
ExpectedStmt ASTNodeImporter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedSLoc ToLocationOrErr = import(E->getLocation());
if (!ToLocationOrErr)
return ToLocationOrErr.takeError();
return CXXBoolLiteralExpr::Create(Importer.getToContext(), E->getValue(),
*ToTypeOrErr, *ToLocationOrErr);
}
ExpectedStmt ASTNodeImporter::VisitMemberExpr(MemberExpr *E) {
Error Err = Error::success();
auto ToBase = importChecked(Err, E->getBase());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
auto ToQualifierLoc = importChecked(Err, E->getQualifierLoc());
auto ToTemplateKeywordLoc = importChecked(Err, E->getTemplateKeywordLoc());
auto ToMemberDecl = importChecked(Err, E->getMemberDecl());
auto ToType = importChecked(Err, E->getType());
auto ToDecl = importChecked(Err, E->getFoundDecl().getDecl());
auto ToName = importChecked(Err, E->getMemberNameInfo().getName());
auto ToLoc = importChecked(Err, E->getMemberNameInfo().getLoc());
if (Err)
return std::move(Err);
DeclAccessPair ToFoundDecl =
DeclAccessPair::make(ToDecl, E->getFoundDecl().getAccess());
DeclarationNameInfo ToMemberNameInfo(ToName, ToLoc);
TemplateArgumentListInfo ToTAInfo, *ResInfo = nullptr;
if (E->hasExplicitTemplateArgs()) {
if (Error Err =
ImportTemplateArgumentListInfo(E->getLAngleLoc(), E->getRAngleLoc(),
E->template_arguments(), ToTAInfo))
return std::move(Err);
ResInfo = &ToTAInfo;
}
return MemberExpr::Create(Importer.getToContext(), ToBase, E->isArrow(),
ToOperatorLoc, ToQualifierLoc, ToTemplateKeywordLoc,
ToMemberDecl, ToFoundDecl, ToMemberNameInfo,
ResInfo, ToType, E->getValueKind(),
E->getObjectKind(), E->isNonOdrUse());
}
ExpectedStmt
ASTNodeImporter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
Error Err = Error::success();
auto ToBase = importChecked(Err, E->getBase());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
auto ToQualifierLoc = importChecked(Err, E->getQualifierLoc());
auto ToScopeTypeInfo = importChecked(Err, E->getScopeTypeInfo());
auto ToColonColonLoc = importChecked(Err, E->getColonColonLoc());
auto ToTildeLoc = importChecked(Err, E->getTildeLoc());
if (Err)
return std::move(Err);
PseudoDestructorTypeStorage Storage;
if (const IdentifierInfo *FromII = E->getDestroyedTypeIdentifier()) {
const IdentifierInfo *ToII = Importer.Import(FromII);
ExpectedSLoc ToDestroyedTypeLocOrErr = import(E->getDestroyedTypeLoc());
if (!ToDestroyedTypeLocOrErr)
return ToDestroyedTypeLocOrErr.takeError();
Storage = PseudoDestructorTypeStorage(ToII, *ToDestroyedTypeLocOrErr);
} else {
if (auto ToTIOrErr = import(E->getDestroyedTypeInfo()))
Storage = PseudoDestructorTypeStorage(*ToTIOrErr);
else
return ToTIOrErr.takeError();
}
return new (Importer.getToContext()) CXXPseudoDestructorExpr(
Importer.getToContext(), ToBase, E->isArrow(), ToOperatorLoc,
ToQualifierLoc, ToScopeTypeInfo, ToColonColonLoc, ToTildeLoc, Storage);
}
ExpectedStmt ASTNodeImporter::VisitCXXDependentScopeMemberExpr(
CXXDependentScopeMemberExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
auto ToQualifierLoc = importChecked(Err, E->getQualifierLoc());
auto ToTemplateKeywordLoc = importChecked(Err, E->getTemplateKeywordLoc());
auto ToFirstQualifierFoundInScope =
importChecked(Err, E->getFirstQualifierFoundInScope());
if (Err)
return std::move(Err);
Expr *ToBase = nullptr;
if (!E->isImplicitAccess()) {
if (ExpectedExpr ToBaseOrErr = import(E->getBase()))
ToBase = *ToBaseOrErr;
else
return ToBaseOrErr.takeError();
}
TemplateArgumentListInfo ToTAInfo, *ResInfo = nullptr;
if (E->hasExplicitTemplateArgs()) {
if (Error Err =
ImportTemplateArgumentListInfo(E->getLAngleLoc(), E->getRAngleLoc(),
E->template_arguments(), ToTAInfo))
return std::move(Err);
ResInfo = &ToTAInfo;
}
auto ToMember = importChecked(Err, E->getMember());
auto ToMemberLoc = importChecked(Err, E->getMemberLoc());
if (Err)
return std::move(Err);
DeclarationNameInfo ToMemberNameInfo(ToMember, ToMemberLoc);
// Import additional name location/type info.
if (Error Err =
ImportDeclarationNameLoc(E->getMemberNameInfo(), ToMemberNameInfo))
return std::move(Err);
return CXXDependentScopeMemberExpr::Create(
Importer.getToContext(), ToBase, ToType, E->isArrow(), ToOperatorLoc,
ToQualifierLoc, ToTemplateKeywordLoc, ToFirstQualifierFoundInScope,
ToMemberNameInfo, ResInfo);
}
ExpectedStmt
ASTNodeImporter::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
Error Err = Error::success();
auto ToQualifierLoc = importChecked(Err, E->getQualifierLoc());
auto ToTemplateKeywordLoc = importChecked(Err, E->getTemplateKeywordLoc());
auto ToDeclName = importChecked(Err, E->getDeclName());
auto ToNameLoc = importChecked(Err, E->getNameInfo().getLoc());
auto ToLAngleLoc = importChecked(Err, E->getLAngleLoc());
auto ToRAngleLoc = importChecked(Err, E->getRAngleLoc());
if (Err)
return std::move(Err);
DeclarationNameInfo ToNameInfo(ToDeclName, ToNameLoc);
if (Error Err = ImportDeclarationNameLoc(E->getNameInfo(), ToNameInfo))
return std::move(Err);
TemplateArgumentListInfo ToTAInfo(ToLAngleLoc, ToRAngleLoc);
TemplateArgumentListInfo *ResInfo = nullptr;
if (E->hasExplicitTemplateArgs()) {
if (Error Err =
ImportTemplateArgumentListInfo(E->template_arguments(), ToTAInfo))
return std::move(Err);
ResInfo = &ToTAInfo;
}
return DependentScopeDeclRefExpr::Create(
Importer.getToContext(), ToQualifierLoc, ToTemplateKeywordLoc,
ToNameInfo, ResInfo);
}
ExpectedStmt ASTNodeImporter::VisitCXXUnresolvedConstructExpr(
CXXUnresolvedConstructExpr *E) {
Error Err = Error::success();
auto ToLParenLoc = importChecked(Err, E->getLParenLoc());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
auto ToType = importChecked(Err, E->getType());
auto ToTypeSourceInfo = importChecked(Err, E->getTypeSourceInfo());
if (Err)
return std::move(Err);
SmallVector<Expr *, 8> ToArgs(E->getNumArgs());
if (Error Err =
ImportArrayChecked(E->arg_begin(), E->arg_end(), ToArgs.begin()))
return std::move(Err);
return CXXUnresolvedConstructExpr::Create(
Importer.getToContext(), ToType, ToTypeSourceInfo, ToLParenLoc,
llvm::ArrayRef(ToArgs), ToRParenLoc, E->isListInitialization());
}
ExpectedStmt
ASTNodeImporter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
Expected<CXXRecordDecl *> ToNamingClassOrErr = import(E->getNamingClass());
if (!ToNamingClassOrErr)
return ToNamingClassOrErr.takeError();
auto ToQualifierLocOrErr = import(E->getQualifierLoc());
if (!ToQualifierLocOrErr)
return ToQualifierLocOrErr.takeError();
Error Err = Error::success();
auto ToName = importChecked(Err, E->getName());
auto ToNameLoc = importChecked(Err, E->getNameLoc());
if (Err)
return std::move(Err);
DeclarationNameInfo ToNameInfo(ToName, ToNameLoc);
// Import additional name location/type info.
if (Error Err = ImportDeclarationNameLoc(E->getNameInfo(), ToNameInfo))
return std::move(Err);
UnresolvedSet<8> ToDecls;
for (auto *D : E->decls())
if (auto ToDOrErr = import(D))
ToDecls.addDecl(cast<NamedDecl>(*ToDOrErr));
else
return ToDOrErr.takeError();
if (E->hasExplicitTemplateArgs()) {
TemplateArgumentListInfo ToTAInfo;
if (Error Err = ImportTemplateArgumentListInfo(
E->getLAngleLoc(), E->getRAngleLoc(), E->template_arguments(),
ToTAInfo))
return std::move(Err);
ExpectedSLoc ToTemplateKeywordLocOrErr = import(E->getTemplateKeywordLoc());
if (!ToTemplateKeywordLocOrErr)
return ToTemplateKeywordLocOrErr.takeError();
const bool KnownDependent =
(E->getDependence() & ExprDependence::TypeValue) ==
ExprDependence::TypeValue;
return UnresolvedLookupExpr::Create(
Importer.getToContext(), *ToNamingClassOrErr, *ToQualifierLocOrErr,
*ToTemplateKeywordLocOrErr, ToNameInfo, E->requiresADL(), &ToTAInfo,
ToDecls.begin(), ToDecls.end(), KnownDependent);
}
return UnresolvedLookupExpr::Create(
Importer.getToContext(), *ToNamingClassOrErr, *ToQualifierLocOrErr,
ToNameInfo, E->requiresADL(), E->isOverloaded(), ToDecls.begin(),
ToDecls.end());
}
ExpectedStmt
ASTNodeImporter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
auto ToQualifierLoc = importChecked(Err, E->getQualifierLoc());
auto ToTemplateKeywordLoc = importChecked(Err, E->getTemplateKeywordLoc());
auto ToName = importChecked(Err, E->getName());
auto ToNameLoc = importChecked(Err, E->getNameLoc());
if (Err)
return std::move(Err);
DeclarationNameInfo ToNameInfo(ToName, ToNameLoc);
// Import additional name location/type info.
if (Error Err = ImportDeclarationNameLoc(E->getNameInfo(), ToNameInfo))
return std::move(Err);
UnresolvedSet<8> ToDecls;
for (Decl *D : E->decls())
if (auto ToDOrErr = import(D))
ToDecls.addDecl(cast<NamedDecl>(*ToDOrErr));
else
return ToDOrErr.takeError();
TemplateArgumentListInfo ToTAInfo;
TemplateArgumentListInfo *ResInfo = nullptr;
if (E->hasExplicitTemplateArgs()) {
TemplateArgumentListInfo FromTAInfo;
E->copyTemplateArgumentsInto(FromTAInfo);
if (Error Err = ImportTemplateArgumentListInfo(FromTAInfo, ToTAInfo))
return std::move(Err);
ResInfo = &ToTAInfo;
}
Expr *ToBase = nullptr;
if (!E->isImplicitAccess()) {
if (ExpectedExpr ToBaseOrErr = import(E->getBase()))
ToBase = *ToBaseOrErr;
else
return ToBaseOrErr.takeError();
}
return UnresolvedMemberExpr::Create(
Importer.getToContext(), E->hasUnresolvedUsing(), ToBase, ToType,
E->isArrow(), ToOperatorLoc, ToQualifierLoc, ToTemplateKeywordLoc,
ToNameInfo, ResInfo, ToDecls.begin(), ToDecls.end());
}
ExpectedStmt ASTNodeImporter::VisitCallExpr(CallExpr *E) {
Error Err = Error::success();
auto ToCallee = importChecked(Err, E->getCallee());
auto ToType = importChecked(Err, E->getType());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
unsigned NumArgs = E->getNumArgs();
llvm::SmallVector<Expr *, 2> ToArgs(NumArgs);
if (Error Err = ImportContainerChecked(E->arguments(), ToArgs))
return std::move(Err);
if (const auto *OCE = dyn_cast<CXXOperatorCallExpr>(E)) {
return CXXOperatorCallExpr::Create(
Importer.getToContext(), OCE->getOperator(), ToCallee, ToArgs, ToType,
OCE->getValueKind(), ToRParenLoc, OCE->getFPFeatures(),
OCE->getADLCallKind());
}
return CallExpr::Create(Importer.getToContext(), ToCallee, ToArgs, ToType,
E->getValueKind(), ToRParenLoc, E->getFPFeatures(),
/*MinNumArgs=*/0, E->getADLCallKind());
}
ExpectedStmt ASTNodeImporter::VisitLambdaExpr(LambdaExpr *E) {
CXXRecordDecl *FromClass = E->getLambdaClass();
auto ToClassOrErr = import(FromClass);
if (!ToClassOrErr)
return ToClassOrErr.takeError();
CXXRecordDecl *ToClass = *ToClassOrErr;
auto ToCallOpOrErr = import(E->getCallOperator());
if (!ToCallOpOrErr)
return ToCallOpOrErr.takeError();
SmallVector<Expr *, 8> ToCaptureInits(E->capture_size());
if (Error Err = ImportContainerChecked(E->capture_inits(), ToCaptureInits))
return std::move(Err);
Error Err = Error::success();
auto ToIntroducerRange = importChecked(Err, E->getIntroducerRange());
auto ToCaptureDefaultLoc = importChecked(Err, E->getCaptureDefaultLoc());
auto ToEndLoc = importChecked(Err, E->getEndLoc());
if (Err)
return std::move(Err);
return LambdaExpr::Create(Importer.getToContext(), ToClass, ToIntroducerRange,
E->getCaptureDefault(), ToCaptureDefaultLoc,
E->hasExplicitParameters(),
E->hasExplicitResultType(), ToCaptureInits,
ToEndLoc, E->containsUnexpandedParameterPack());
}
ExpectedStmt ASTNodeImporter::VisitInitListExpr(InitListExpr *E) {
Error Err = Error::success();
auto ToLBraceLoc = importChecked(Err, E->getLBraceLoc());
auto ToRBraceLoc = importChecked(Err, E->getRBraceLoc());
auto ToType = importChecked(Err, E->getType());
if (Err)
return std::move(Err);
SmallVector<Expr *, 4> ToExprs(E->getNumInits());
if (Error Err = ImportContainerChecked(E->inits(), ToExprs))
return std::move(Err);
ASTContext &ToCtx = Importer.getToContext();
InitListExpr *To = new (ToCtx) InitListExpr(
ToCtx, ToLBraceLoc, ToExprs, ToRBraceLoc);
To->setType(ToType);
if (E->hasArrayFiller()) {
if (ExpectedExpr ToFillerOrErr = import(E->getArrayFiller()))
To->setArrayFiller(*ToFillerOrErr);
else
return ToFillerOrErr.takeError();
}
if (FieldDecl *FromFD = E->getInitializedFieldInUnion()) {
if (auto ToFDOrErr = import(FromFD))
To->setInitializedFieldInUnion(*ToFDOrErr);
else
return ToFDOrErr.takeError();
}
if (InitListExpr *SyntForm = E->getSyntacticForm()) {
if (auto ToSyntFormOrErr = import(SyntForm))
To->setSyntacticForm(*ToSyntFormOrErr);
else
return ToSyntFormOrErr.takeError();
}
// Copy InitListExprBitfields, which are not handled in the ctor of
// InitListExpr.
To->sawArrayRangeDesignator(E->hadArrayRangeDesignator());
return To;
}
ExpectedStmt ASTNodeImporter::VisitCXXStdInitializerListExpr(
CXXStdInitializerListExpr *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
ExpectedExpr ToSubExprOrErr = import(E->getSubExpr());
if (!ToSubExprOrErr)
return ToSubExprOrErr.takeError();
return new (Importer.getToContext()) CXXStdInitializerListExpr(
*ToTypeOrErr, *ToSubExprOrErr);
}
ExpectedStmt ASTNodeImporter::VisitCXXInheritedCtorInitExpr(
CXXInheritedCtorInitExpr *E) {
Error Err = Error::success();
auto ToLocation = importChecked(Err, E->getLocation());
auto ToType = importChecked(Err, E->getType());
auto ToConstructor = importChecked(Err, E->getConstructor());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) CXXInheritedCtorInitExpr(
ToLocation, ToType, ToConstructor, E->constructsVBase(),
E->inheritedFromVBase());
}
ExpectedStmt ASTNodeImporter::VisitArrayInitLoopExpr(ArrayInitLoopExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToCommonExpr = importChecked(Err, E->getCommonExpr());
auto ToSubExpr = importChecked(Err, E->getSubExpr());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) ArrayInitLoopExpr(
ToType, ToCommonExpr, ToSubExpr);
}
ExpectedStmt ASTNodeImporter::VisitArrayInitIndexExpr(ArrayInitIndexExpr *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
return new (Importer.getToContext()) ArrayInitIndexExpr(*ToTypeOrErr);
}
ExpectedStmt ASTNodeImporter::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
ExpectedSLoc ToBeginLocOrErr = import(E->getBeginLoc());
if (!ToBeginLocOrErr)
return ToBeginLocOrErr.takeError();
auto ToFieldOrErr = import(E->getField());
if (!ToFieldOrErr)
return ToFieldOrErr.takeError();
auto UsedContextOrErr = Importer.ImportContext(E->getUsedContext());
if (!UsedContextOrErr)
return UsedContextOrErr.takeError();
FieldDecl *ToField = *ToFieldOrErr;
assert(ToField->hasInClassInitializer() &&
"Field should have in-class initializer if there is a default init "
"expression that uses it.");
if (!ToField->getInClassInitializer()) {
// The in-class initializer may be not yet set in "To" AST even if the
// field is already there. This must be set here to make construction of
// CXXDefaultInitExpr work.
auto ToInClassInitializerOrErr =
import(E->getField()->getInClassInitializer());
if (!ToInClassInitializerOrErr)
return ToInClassInitializerOrErr.takeError();
ToField->setInClassInitializer(*ToInClassInitializerOrErr);
}
Expr *RewrittenInit = nullptr;
if (E->hasRewrittenInit()) {
ExpectedExpr ExprOrErr = import(E->getRewrittenExpr());
if (!ExprOrErr)
return ExprOrErr.takeError();
RewrittenInit = ExprOrErr.get();
}
return CXXDefaultInitExpr::Create(Importer.getToContext(), *ToBeginLocOrErr,
ToField, *UsedContextOrErr, RewrittenInit);
}
ExpectedStmt ASTNodeImporter::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToSubExpr = importChecked(Err, E->getSubExpr());
auto ToTypeInfoAsWritten = importChecked(Err, E->getTypeInfoAsWritten());
auto ToOperatorLoc = importChecked(Err, E->getOperatorLoc());
auto ToRParenLoc = importChecked(Err, E->getRParenLoc());
auto ToAngleBrackets = importChecked(Err, E->getAngleBrackets());
if (Err)
return std::move(Err);
ExprValueKind VK = E->getValueKind();
CastKind CK = E->getCastKind();
auto ToBasePathOrErr = ImportCastPath(E);
if (!ToBasePathOrErr)
return ToBasePathOrErr.takeError();
if (auto CCE = dyn_cast<CXXStaticCastExpr>(E)) {
return CXXStaticCastExpr::Create(
Importer.getToContext(), ToType, VK, CK, ToSubExpr, &(*ToBasePathOrErr),
ToTypeInfoAsWritten, CCE->getFPFeatures(), ToOperatorLoc, ToRParenLoc,
ToAngleBrackets);
} else if (isa<CXXDynamicCastExpr>(E)) {
return CXXDynamicCastExpr::Create(
Importer.getToContext(), ToType, VK, CK, ToSubExpr, &(*ToBasePathOrErr),
ToTypeInfoAsWritten, ToOperatorLoc, ToRParenLoc, ToAngleBrackets);
} else if (isa<CXXReinterpretCastExpr>(E)) {
return CXXReinterpretCastExpr::Create(
Importer.getToContext(), ToType, VK, CK, ToSubExpr, &(*ToBasePathOrErr),
ToTypeInfoAsWritten, ToOperatorLoc, ToRParenLoc, ToAngleBrackets);
} else if (isa<CXXConstCastExpr>(E)) {
return CXXConstCastExpr::Create(
Importer.getToContext(), ToType, VK, ToSubExpr, ToTypeInfoAsWritten,
ToOperatorLoc, ToRParenLoc, ToAngleBrackets);
} else {
llvm_unreachable("Unknown cast type");
return make_error<ASTImportError>();
}
}
ExpectedStmt ASTNodeImporter::VisitSubstNonTypeTemplateParmExpr(
SubstNonTypeTemplateParmExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToExprLoc = importChecked(Err, E->getExprLoc());
auto ToAssociatedDecl = importChecked(Err, E->getAssociatedDecl());
auto ToReplacement = importChecked(Err, E->getReplacement());
if (Err)
return std::move(Err);
return new (Importer.getToContext()) SubstNonTypeTemplateParmExpr(
ToType, E->getValueKind(), ToExprLoc, ToReplacement, ToAssociatedDecl,
E->getIndex(), E->getPackIndex(), E->isReferenceParameter());
}
ExpectedStmt ASTNodeImporter::VisitTypeTraitExpr(TypeTraitExpr *E) {
Error Err = Error::success();
auto ToType = importChecked(Err, E->getType());
auto ToBeginLoc = importChecked(Err, E->getBeginLoc());
auto ToEndLoc = importChecked(Err, E->getEndLoc());
if (Err)
return std::move(Err);
SmallVector<TypeSourceInfo *, 4> ToArgs(E->getNumArgs());
if (Error Err = ImportContainerChecked(E->getArgs(), ToArgs))
return std::move(Err);
// According to Sema::BuildTypeTrait(), if E is value-dependent,
// Value is always false.
bool ToValue = (E->isValueDependent() ? false : E->getValue());
return TypeTraitExpr::Create(
Importer.getToContext(), ToType, ToBeginLoc, E->getTrait(), ToArgs,
ToEndLoc, ToValue);
}
ExpectedStmt ASTNodeImporter::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
ExpectedType ToTypeOrErr = import(E->getType());
if (!ToTypeOrErr)
return ToTypeOrErr.takeError();
auto ToSourceRangeOrErr = import(E->getSourceRange());
if (!ToSourceRangeOrErr)
return ToSourceRangeOrErr.takeError();
if (E->isTypeOperand()) {
if (auto ToTSIOrErr = import(E->getTypeOperandSourceInfo()))
return new (Importer.getToContext()) CXXTypeidExpr(
*ToTypeOrErr, *ToTSIOrErr, *ToSourceRangeOrErr);
else
return ToTSIOrErr.takeError();
}
ExpectedExpr ToExprOperandOrErr = import(E->getExprOperand());
if (!ToExprOperandOrErr)
return ToExprOperandOrErr.takeError();
return new (Importer.getToContext()) CXXTypeidExpr(
*ToTypeOrErr, *ToExprOperandOrErr, *ToSourceRangeOrErr);
}
ExpectedStmt ASTNodeImporter::VisitCXXFoldExpr(CXXFoldExpr *E) {
Error Err = Error::success();
QualType ToType = importChecked(Err, E->getType());
UnresolvedLookupExpr *ToCallee = importChecked(Err, E->getCallee());
SourceLocation ToLParenLoc = importChecked(Err, E->getLParenLoc());
Expr *ToLHS = importChecked(Err, E->getLHS());
SourceLocation ToEllipsisLoc = importChecked(Err, E->getEllipsisLoc());
Expr *ToRHS = importChecked(Err, E->getRHS());
SourceLocation ToRParenLoc = importChecked(Err, E->getRParenLoc());
if (Err)
return std::move(Err);
return new (Importer.getToContext())
CXXFoldExpr(ToType, ToCallee, ToLParenLoc, ToLHS, E->getOperator(),
ToEllipsisLoc, ToRHS, ToRParenLoc, E->getNumExpansions());
}
Error ASTNodeImporter::ImportOverriddenMethods(CXXMethodDecl *ToMethod,
CXXMethodDecl *FromMethod) {
Error ImportErrors = Error::success();
for (auto *FromOverriddenMethod : FromMethod->overridden_methods()) {
if (auto ImportedOrErr = import(FromOverriddenMethod))
ToMethod->getCanonicalDecl()->addOverriddenMethod(cast<CXXMethodDecl>(
(*ImportedOrErr)->getCanonicalDecl()));
else
ImportErrors =
joinErrors(std::move(ImportErrors), ImportedOrErr.takeError());
}
return ImportErrors;
}
ASTImporter::ASTImporter(ASTContext &ToContext, FileManager &ToFileManager,
ASTContext &FromContext, FileManager &FromFileManager,
bool MinimalImport,
std::shared_ptr<ASTImporterSharedState> SharedState)
: SharedState(SharedState), ToContext(ToContext), FromContext(FromContext),
ToFileManager(ToFileManager), FromFileManager(FromFileManager),
Minimal(MinimalImport), ODRHandling(ODRHandlingType::Conservative) {
// Create a default state without the lookup table: LLDB case.
if (!SharedState) {
this->SharedState = std::make_shared<ASTImporterSharedState>();
}
ImportedDecls[FromContext.getTranslationUnitDecl()] =
ToContext.getTranslationUnitDecl();
}
ASTImporter::~ASTImporter() = default;
std::optional<unsigned> ASTImporter::getFieldIndex(Decl *F) {
assert(F && (isa<FieldDecl>(*F) || isa<IndirectFieldDecl>(*F)) &&
"Try to get field index for non-field.");
auto *Owner = dyn_cast<RecordDecl>(F->getDeclContext());
if (!Owner)
return std::nullopt;
unsigned Index = 0;
for (const auto *D : Owner->decls()) {
if (D == F)
return Index;
if (isa<FieldDecl>(*D) || isa<IndirectFieldDecl>(*D))
++Index;
}
llvm_unreachable("Field was not found in its parent context.");
return std::nullopt;
}
ASTImporter::FoundDeclsTy
ASTImporter::findDeclsInToCtx(DeclContext *DC, DeclarationName Name) {
// We search in the redecl context because of transparent contexts.
// E.g. a simple C language enum is a transparent context:
// enum E { A, B };
// Now if we had a global variable in the TU
// int A;
// then the enum constant 'A' and the variable 'A' violates ODR.
// We can diagnose this only if we search in the redecl context.
DeclContext *ReDC = DC->getRedeclContext();
if (SharedState->getLookupTable()) {
ASTImporterLookupTable::LookupResult LookupResult =
SharedState->getLookupTable()->lookup(ReDC, Name);
return FoundDeclsTy(LookupResult.begin(), LookupResult.end());
} else {
DeclContext::lookup_result NoloadLookupResult = ReDC->noload_lookup(Name);
FoundDeclsTy Result(NoloadLookupResult.begin(), NoloadLookupResult.end());
// We must search by the slow case of localUncachedLookup because that is
// working even if there is no LookupPtr for the DC. We could use
// DC::buildLookup() to create the LookupPtr, but that would load external
// decls again, we must avoid that case.
// Also, even if we had the LookupPtr, we must find Decls which are not
// in the LookupPtr, so we need the slow case.
// These cases are handled in ASTImporterLookupTable, but we cannot use
// that with LLDB since that traverses through the AST which initiates the
// load of external decls again via DC::decls(). And again, we must avoid
// loading external decls during the import.
if (Result.empty())
ReDC->localUncachedLookup(Name, Result);
return Result;
}
}
void ASTImporter::AddToLookupTable(Decl *ToD) {
SharedState->addDeclToLookup(ToD);
}
Expected<Decl *> ASTImporter::ImportImpl(Decl *FromD) {
// Import the decl using ASTNodeImporter.
ASTNodeImporter Importer(*this);
return Importer.Visit(FromD);
}
void ASTImporter::RegisterImportedDecl(Decl *FromD, Decl *ToD) {
MapImported(FromD, ToD);
}
llvm::Expected<ExprWithCleanups::CleanupObject>
ASTImporter::Import(ExprWithCleanups::CleanupObject From) {
if (auto *CLE = From.dyn_cast<CompoundLiteralExpr *>()) {
if (Expected<Expr *> R = Import(CLE))
return ExprWithCleanups::CleanupObject(cast<CompoundLiteralExpr>(*R));
}
// FIXME: Handle BlockDecl when we implement importing BlockExpr in
// ASTNodeImporter.
return make_error<ASTImportError>(ASTImportError::UnsupportedConstruct);
}
ExpectedTypePtr ASTImporter::Import(const Type *FromT) {
if (!FromT)
return FromT;
// Check whether we've already imported this type.
llvm::DenseMap<const Type *, const Type *>::iterator Pos =
ImportedTypes.find(FromT);
if (Pos != ImportedTypes.end())
return Pos->second;
// Import the type.
ASTNodeImporter Importer(*this);
ExpectedType ToTOrErr = Importer.Visit(FromT);
if (!ToTOrErr)
return ToTOrErr.takeError();
// Record the imported type.
ImportedTypes[FromT] = ToTOrErr->getTypePtr();
return ToTOrErr->getTypePtr();
}
Expected<QualType> ASTImporter::Import(QualType FromT) {
if (FromT.isNull())
return QualType{};
ExpectedTypePtr ToTyOrErr = Import(FromT.getTypePtr());
if (!ToTyOrErr)
return ToTyOrErr.takeError();
return ToContext.getQualifiedType(*ToTyOrErr, FromT.getLocalQualifiers());
}
Expected<TypeSourceInfo *> ASTImporter::Import(TypeSourceInfo *FromTSI) {
if (!FromTSI)
return FromTSI;
// FIXME: For now we just create a "trivial" type source info based
// on the type and a single location. Implement a real version of this.
ExpectedType TOrErr = Import(FromTSI->getType());
if (!TOrErr)
return TOrErr.takeError();
ExpectedSLoc BeginLocOrErr = Import(FromTSI->getTypeLoc().getBeginLoc());
if (!BeginLocOrErr)
return BeginLocOrErr.takeError();
return ToContext.getTrivialTypeSourceInfo(*TOrErr, *BeginLocOrErr);
}
namespace {
// To use this object, it should be created before the new attribute is created,
// and destructed after it is created. The construction already performs the
// import of the data.
template <typename T> struct AttrArgImporter {
AttrArgImporter(const AttrArgImporter<T> &) = delete;
AttrArgImporter(AttrArgImporter<T> &&) = default;
AttrArgImporter<T> &operator=(const AttrArgImporter<T> &) = delete;
AttrArgImporter<T> &operator=(AttrArgImporter<T> &&) = default;
AttrArgImporter(ASTNodeImporter &I, Error &Err, const T &From)
: To(I.importChecked(Err, From)) {}
const T &value() { return To; }
private:
T To;
};
// To use this object, it should be created before the new attribute is created,
// and destructed after it is created. The construction already performs the
// import of the data. The array data is accessible in a pointer form, this form
// is used by the attribute classes. This object should be created once for the
// array data to be imported (the array size is not imported, just copied).
template <typename T> struct AttrArgArrayImporter {
AttrArgArrayImporter(const AttrArgArrayImporter<T> &) = delete;
AttrArgArrayImporter(AttrArgArrayImporter<T> &&) = default;
AttrArgArrayImporter<T> &operator=(const AttrArgArrayImporter<T> &) = delete;
AttrArgArrayImporter<T> &operator=(AttrArgArrayImporter<T> &&) = default;
AttrArgArrayImporter(ASTNodeImporter &I, Error &Err,
const llvm::iterator_range<T *> &From,
unsigned ArraySize) {
if (Err)
return;
To.reserve(ArraySize);
Err = I.ImportContainerChecked(From, To);
}
T *value() { return To.data(); }
private:
llvm::SmallVector<T, 2> To;
};
class AttrImporter {
Error Err{Error::success()};
Attr *ToAttr = nullptr;
ASTImporter &Importer;
ASTNodeImporter NImporter;
public:
AttrImporter(ASTImporter &I) : Importer(I), NImporter(I) {}
// Useful for accessing the imported attribute.
template <typename T> T *castAttrAs() { return cast<T>(ToAttr); }
template <typename T> const T *castAttrAs() const { return cast<T>(ToAttr); }
// Create an "importer" for an attribute parameter.
// Result of the 'value()' of that object is to be passed to the function
// 'importAttr', in the order that is expected by the attribute class.
template <class T> AttrArgImporter<T> importArg(const T &From) {
return AttrArgImporter<T>(NImporter, Err, From);
}
// Create an "importer" for an attribute parameter that has array type.
// Result of the 'value()' of that object is to be passed to the function
// 'importAttr', then the size of the array as next argument.
template <typename T>
AttrArgArrayImporter<T> importArrayArg(const llvm::iterator_range<T *> &From,
unsigned ArraySize) {
return AttrArgArrayImporter<T>(NImporter, Err, From, ArraySize);
}
// Create an attribute object with the specified arguments.
// The 'FromAttr' is the original (not imported) attribute, the 'ImportedArg'
// should be values that are passed to the 'Create' function of the attribute.
// (The 'Create' with 'ASTContext' first and 'AttributeCommonInfo' last is
// used here.) As much data is copied or imported from the old attribute
// as possible. The passed arguments should be already imported.
// If an import error happens, the internal error is set to it, and any
// further import attempt is ignored.
template <typename T, typename... Arg>
void importAttr(const T *FromAttr, Arg &&...ImportedArg) {
static_assert(std::is_base_of<Attr, T>::value,
"T should be subclass of Attr.");
assert(!ToAttr && "Use one AttrImporter to import one Attribute object.");
const IdentifierInfo *ToAttrName = Importer.Import(FromAttr->getAttrName());
const IdentifierInfo *ToScopeName =
Importer.Import(FromAttr->getScopeName());
SourceRange ToAttrRange =
NImporter.importChecked(Err, FromAttr->getRange());
SourceLocation ToScopeLoc =
NImporter.importChecked(Err, FromAttr->getScopeLoc());
if (Err)
return;
AttributeCommonInfo ToI(ToAttrName, ToScopeName, ToAttrRange, ToScopeLoc,
FromAttr->getParsedKind(), FromAttr->getForm());
// The "SemanticSpelling" is not needed to be passed to the constructor.
// That value is recalculated from the SpellingListIndex if needed.
ToAttr = T::Create(Importer.getToContext(),
std::forward<Arg>(ImportedArg)..., ToI);
ToAttr->setImplicit(FromAttr->isImplicit());
ToAttr->setPackExpansion(FromAttr->isPackExpansion());
if (auto *ToInheritableAttr = dyn_cast<InheritableAttr>(ToAttr))
ToInheritableAttr->setInherited(FromAttr->isInherited());
}
// Create a clone of the 'FromAttr' and import its source range only.
// This causes objects with invalid references to be created if the 'FromAttr'
// contains other data that should be imported.
void cloneAttr(const Attr *FromAttr) {
assert(!ToAttr && "Use one AttrImporter to import one Attribute object.");
SourceRange ToRange = NImporter.importChecked(Err, FromAttr->getRange());
if (Err)
return;
ToAttr = FromAttr->clone(Importer.getToContext());
ToAttr->setRange(ToRange);
ToAttr->setAttrName(Importer.Import(FromAttr->getAttrName()));
}
// Get the result of the previous import attempt (can be used only once).
llvm::Expected<Attr *> getResult() && {
if (Err)
return std::move(Err);
assert(ToAttr && "Attribute should be created.");
return ToAttr;
}
};
} // namespace
Expected<Attr *> ASTImporter::Import(const Attr *FromAttr) {
AttrImporter AI(*this);
// FIXME: Is there some kind of AttrVisitor to use here?
switch (FromAttr->getKind()) {
case attr::Aligned: {
auto *From = cast<AlignedAttr>(FromAttr);
if (From->isAlignmentExpr())
AI.importAttr(From, true, AI.importArg(From->getAlignmentExpr()).value());
else
AI.importAttr(From, false,
AI.importArg(From->getAlignmentType()).value());
break;
}
case attr::AlignValue: {
auto *From = cast<AlignValueAttr>(FromAttr);
AI.importAttr(From, AI.importArg(From->getAlignment()).value());
break;
}
case attr::Format: {
const auto *From = cast<FormatAttr>(FromAttr);
AI.importAttr(From, Import(From->getType()), From->getFormatIdx(),
From->getFirstArg());
break;
}
case attr::EnableIf: {
const auto *From = cast<EnableIfAttr>(FromAttr);
AI.importAttr(From, AI.importArg(From->getCond()).value(),
From->getMessage());
break;
}
case attr::AssertCapability: {
const auto *From = cast<AssertCapabilityAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::AcquireCapability: {
const auto *From = cast<AcquireCapabilityAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::TryAcquireCapability: {
const auto *From = cast<TryAcquireCapabilityAttr>(FromAttr);
AI.importAttr(From, AI.importArg(From->getSuccessValue()).value(),
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::ReleaseCapability: {
const auto *From = cast<ReleaseCapabilityAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::RequiresCapability: {
const auto *From = cast<RequiresCapabilityAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::GuardedBy: {
const auto *From = cast<GuardedByAttr>(FromAttr);
AI.importAttr(From, AI.importArg(From->getArg()).value());
break;
}
case attr::PtGuardedBy: {
const auto *From = cast<PtGuardedByAttr>(FromAttr);
AI.importAttr(From, AI.importArg(From->getArg()).value());
break;
}
case attr::AcquiredAfter: {
const auto *From = cast<AcquiredAfterAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::AcquiredBefore: {
const auto *From = cast<AcquiredBeforeAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::AssertExclusiveLock: {
const auto *From = cast<AssertExclusiveLockAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::AssertSharedLock: {
const auto *From = cast<AssertSharedLockAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::ExclusiveTrylockFunction: {
const auto *From = cast<ExclusiveTrylockFunctionAttr>(FromAttr);
AI.importAttr(From, AI.importArg(From->getSuccessValue()).value(),
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::SharedTrylockFunction: {
const auto *From = cast<SharedTrylockFunctionAttr>(FromAttr);
AI.importAttr(From, AI.importArg(From->getSuccessValue()).value(),
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
case attr::LockReturned: {
const auto *From = cast<LockReturnedAttr>(FromAttr);
AI.importAttr(From, AI.importArg(From->getArg()).value());
break;
}
case attr::LocksExcluded: {
const auto *From = cast<LocksExcludedAttr>(FromAttr);
AI.importAttr(From,
AI.importArrayArg(From->args(), From->args_size()).value(),
From->args_size());
break;
}
default: {
// The default branch works for attributes that have no arguments to import.
// FIXME: Handle every attribute type that has arguments of type to import
// (most often Expr* or Decl* or type) in the switch above.
AI.cloneAttr(FromAttr);
break;
}
}
return std::move(AI).getResult();
}
Decl *ASTImporter::GetAlreadyImportedOrNull(const Decl *FromD) const {
return ImportedDecls.lookup(FromD);
}
TranslationUnitDecl *ASTImporter::GetFromTU(Decl *ToD) {
auto FromDPos = ImportedFromDecls.find(ToD);
if (FromDPos == ImportedFromDecls.end())
return nullptr;
return FromDPos->second->getTranslationUnitDecl();
}
Error ASTImporter::ImportAttrs(Decl *ToD, Decl *FromD) {
if (!FromD->hasAttrs() || ToD->hasAttrs())
return Error::success();
for (const Attr *FromAttr : FromD->getAttrs()) {
auto ToAttrOrErr = Import(FromAttr);
if (ToAttrOrErr)
ToD->addAttr(*ToAttrOrErr);
else
return ToAttrOrErr.takeError();
}
return Error::success();
}
Expected<Decl *> ASTImporter::Import(Decl *FromD) {
if (!FromD)
return nullptr;
// Push FromD to the stack, and remove that when we return.
ImportPath.push(FromD);
auto ImportPathBuilder =
llvm::make_scope_exit([this]() { ImportPath.pop(); });
// Check whether there was a previous failed import.
// If yes return the existing error.
if (auto Error = getImportDeclErrorIfAny(FromD))
return make_error<ASTImportError>(*Error);
// Check whether we've already imported this declaration.
Decl *ToD = GetAlreadyImportedOrNull(FromD);
if (ToD) {
// Already imported (possibly from another TU) and with an error.
if (auto Error = SharedState->getImportDeclErrorIfAny(ToD)) {
setImportDeclError(FromD, *Error);
return make_error<ASTImportError>(*Error);
}
// If FromD has some updated flags after last import, apply it.
updateFlags(FromD, ToD);
// If we encounter a cycle during an import then we save the relevant part
// of the import path associated to the Decl.
if (ImportPath.hasCycleAtBack())
SavedImportPaths[FromD].push_back(ImportPath.copyCycleAtBack());
return ToD;
}
// Import the declaration.
ExpectedDecl ToDOrErr = ImportImpl(FromD);
if (!ToDOrErr) {
// Failed to import.
auto Pos = ImportedDecls.find(FromD);
if (Pos != ImportedDecls.end()) {
// Import failed after the object was created.
// Remove all references to it.
auto *ToD = Pos->second;
ImportedDecls.erase(Pos);
// ImportedDecls and ImportedFromDecls are not symmetric. It may happen
// (e.g. with namespaces) that several decls from the 'from' context are
// mapped to the same decl in the 'to' context. If we removed entries
// from the LookupTable here then we may end up removing them multiple
// times.
// The Lookuptable contains decls only which are in the 'to' context.
// Remove from the Lookuptable only if it is *imported* into the 'to'
// context (and do not remove it if it was added during the initial
// traverse of the 'to' context).
auto PosF = ImportedFromDecls.find(ToD);
if (PosF != ImportedFromDecls.end()) {
// In the case of TypedefNameDecl we create the Decl first and only
// then we import and set its DeclContext. So, the DC might not be set
// when we reach here.
if (ToD->getDeclContext())
SharedState->removeDeclFromLookup(ToD);
ImportedFromDecls.erase(PosF);
}
// FIXME: AST may contain remaining references to the failed object.
// However, the ImportDeclErrors in the shared state contains all the
// failed objects together with their error.
}
// Error encountered for the first time.
// After takeError the error is not usable any more in ToDOrErr.
// Get a copy of the error object (any more simple solution for this?).
ASTImportError ErrOut;
handleAllErrors(ToDOrErr.takeError(),
[&ErrOut](const ASTImportError &E) { ErrOut = E; });
setImportDeclError(FromD, ErrOut);
// Set the error for the mapped to Decl, which is in the "to" context.
if (Pos != ImportedDecls.end())
SharedState->setImportDeclError(Pos->second, ErrOut);
// Set the error for all nodes which have been created before we
// recognized the error.
for (const auto &Path : SavedImportPaths[FromD]) {
// The import path contains import-dependency nodes first.
// Save the node that was imported as dependency of the current node.
Decl *PrevFromDi = FromD;
for (Decl *FromDi : Path) {
// Begin and end of the path equals 'FromD', skip it.
if (FromDi == FromD)
continue;
// We should not set import error on a node and all following nodes in
// the path if child import errors are ignored.
if (ChildErrorHandlingStrategy(FromDi).ignoreChildErrorOnParent(
PrevFromDi))
break;
PrevFromDi = FromDi;
setImportDeclError(FromDi, ErrOut);
//FIXME Should we remove these Decls from ImportedDecls?
// Set the error for the mapped to Decl, which is in the "to" context.
auto Ii = ImportedDecls.find(FromDi);
if (Ii != ImportedDecls.end())
SharedState->setImportDeclError(Ii->second, ErrOut);
// FIXME Should we remove these Decls from the LookupTable,
// and from ImportedFromDecls?
}
}
SavedImportPaths.erase(FromD);
// Do not return ToDOrErr, error was taken out of it.
return make_error<ASTImportError>(ErrOut);
}
ToD = *ToDOrErr;
// FIXME: Handle the "already imported with error" case. We can get here
// nullptr only if GetImportedOrCreateDecl returned nullptr (after a
// previously failed create was requested).
// Later GetImportedOrCreateDecl can be updated to return the error.
if (!ToD) {
auto Err = getImportDeclErrorIfAny(FromD);
assert(Err);
return make_error<ASTImportError>(*Err);
}
// We could import from the current TU without error. But previously we
// already had imported a Decl as `ToD` from another TU (with another
// ASTImporter object) and with an error.
if (auto Error = SharedState->getImportDeclErrorIfAny(ToD)) {
setImportDeclError(FromD, *Error);
return make_error<ASTImportError>(*Error);
}
// Make sure that ImportImpl registered the imported decl.
assert(ImportedDecls.count(FromD) != 0 && "Missing call to MapImported?");
if (auto Error = ImportAttrs(ToD, FromD))
return std::move(Error);
// Notify subclasses.
Imported(FromD, ToD);
updateFlags(FromD, ToD);
SavedImportPaths.erase(FromD);
return ToDOrErr;
}
llvm::Expected<InheritedConstructor>
ASTImporter::Import(const InheritedConstructor &From) {
return ASTNodeImporter(*this).ImportInheritedConstructor(From);
}
Expected<DeclContext *> ASTImporter::ImportContext(DeclContext *FromDC) {
if (!FromDC)
return FromDC;
ExpectedDecl ToDCOrErr = Import(cast<Decl>(FromDC));
if (!ToDCOrErr)
return ToDCOrErr.takeError();
auto *ToDC = cast<DeclContext>(*ToDCOrErr);
// When we're using a record/enum/Objective-C class/protocol as a context, we
// need it to have a definition.
if (auto *ToRecord = dyn_cast<RecordDecl>(ToDC)) {
auto *FromRecord = cast<RecordDecl>(FromDC);
if (ToRecord->isCompleteDefinition())
return ToDC;
// If FromRecord is not defined we need to force it to be.
// Simply calling CompleteDecl(...) for a RecordDecl will break some cases
// it will start the definition but we never finish it.
// If there are base classes they won't be imported and we will
// be missing anything that we inherit from those bases.
if (FromRecord->getASTContext().getExternalSource() &&
!FromRecord->isCompleteDefinition())
FromRecord->getASTContext().getExternalSource()->CompleteType(FromRecord);
if (FromRecord->isCompleteDefinition())
if (Error Err = ASTNodeImporter(*this).ImportDefinition(
FromRecord, ToRecord, ASTNodeImporter::IDK_Basic))
return std::move(Err);
} else if (auto *ToEnum = dyn_cast<EnumDecl>(ToDC)) {
auto *FromEnum = cast<EnumDecl>(FromDC);
if (ToEnum->isCompleteDefinition()) {
// Do nothing.
} else if (FromEnum->isCompleteDefinition()) {
if (Error Err = ASTNodeImporter(*this).ImportDefinition(
FromEnum, ToEnum, ASTNodeImporter::IDK_Basic))
return std::move(Err);
} else {
CompleteDecl(ToEnum);
}
} else if (auto *ToClass = dyn_cast<ObjCInterfaceDecl>(ToDC)) {
auto *FromClass = cast<ObjCInterfaceDecl>(FromDC);
if (ToClass->getDefinition()) {
// Do nothing.
} else if (ObjCInterfaceDecl *FromDef = FromClass->getDefinition()) {
if (Error Err = ASTNodeImporter(*this).ImportDefinition(
FromDef, ToClass, ASTNodeImporter::IDK_Basic))
return std::move(Err);
} else {
CompleteDecl(ToClass);
}
} else if (auto *ToProto = dyn_cast<ObjCProtocolDecl>(ToDC)) {
auto *FromProto = cast<ObjCProtocolDecl>(FromDC);
if (ToProto->getDefinition()) {
// Do nothing.
} else if (ObjCProtocolDecl *FromDef = FromProto->getDefinition()) {
if (Error Err = ASTNodeImporter(*this).ImportDefinition(
FromDef, ToProto, ASTNodeImporter::IDK_Basic))
return std::move(Err);
} else {
CompleteDecl(ToProto);
}
}
return ToDC;
}
Expected<Expr *> ASTImporter::Import(Expr *FromE) {
if (ExpectedStmt ToSOrErr = Import(cast_or_null<Stmt>(FromE)))
return cast_or_null<Expr>(*ToSOrErr);
else
return ToSOrErr.takeError();
}
Expected<Stmt *> ASTImporter::Import(Stmt *FromS) {
if (!FromS)
return nullptr;
// Check whether we've already imported this statement.
llvm::DenseMap<Stmt *, Stmt *>::iterator Pos = ImportedStmts.find(FromS);
if (Pos != ImportedStmts.end())
return Pos->second;
// Import the statement.
ASTNodeImporter Importer(*this);
ExpectedStmt ToSOrErr = Importer.Visit(FromS);
if (!ToSOrErr)
return ToSOrErr;
if (auto *ToE = dyn_cast<Expr>(*ToSOrErr)) {
auto *FromE = cast<Expr>(FromS);
// Copy ExprBitfields, which may not be handled in Expr subclasses
// constructors.
ToE->setValueKind(FromE->getValueKind());
ToE->setObjectKind(FromE->getObjectKind());
ToE->setDependence(FromE->getDependence());
}
// Record the imported statement object.
ImportedStmts[FromS] = *ToSOrErr;
return ToSOrErr;
}
Expected<NestedNameSpecifier *>
ASTImporter::Import(NestedNameSpecifier *FromNNS) {
if (!FromNNS)
return nullptr;
NestedNameSpecifier *Prefix = nullptr;
if (Error Err = importInto(Prefix, FromNNS->getPrefix()))
return std::move(Err);
switch (FromNNS->getKind()) {
case NestedNameSpecifier::Identifier:
assert(FromNNS->getAsIdentifier() && "NNS should contain identifier.");
return NestedNameSpecifier::Create(ToContext, Prefix,
Import(FromNNS->getAsIdentifier()));
case NestedNameSpecifier::Namespace:
if (ExpectedDecl NSOrErr = Import(FromNNS->getAsNamespace())) {
return NestedNameSpecifier::Create(ToContext, Prefix,
cast<NamespaceDecl>(*NSOrErr));
} else
return NSOrErr.takeError();
case NestedNameSpecifier::NamespaceAlias:
if (ExpectedDecl NSADOrErr = Import(FromNNS->getAsNamespaceAlias()))
return NestedNameSpecifier::Create(ToContext, Prefix,
cast<NamespaceAliasDecl>(*NSADOrErr));
else
return NSADOrErr.takeError();
case NestedNameSpecifier::Global:
return NestedNameSpecifier::GlobalSpecifier(ToContext);
case NestedNameSpecifier::Super:
if (ExpectedDecl RDOrErr = Import(FromNNS->getAsRecordDecl()))
return NestedNameSpecifier::SuperSpecifier(ToContext,
cast<CXXRecordDecl>(*RDOrErr));
else
return RDOrErr.takeError();
case NestedNameSpecifier::TypeSpec:
case NestedNameSpecifier::TypeSpecWithTemplate:
if (ExpectedTypePtr TyOrErr = Import(FromNNS->getAsType())) {
bool TSTemplate =
FromNNS->getKind() == NestedNameSpecifier::TypeSpecWithTemplate;
return NestedNameSpecifier::Create(ToContext, Prefix, TSTemplate,
*TyOrErr);
} else {
return TyOrErr.takeError();
}
}
llvm_unreachable("Invalid nested name specifier kind");
}
Expected<NestedNameSpecifierLoc>
ASTImporter::Import(NestedNameSpecifierLoc FromNNS) {
// Copied from NestedNameSpecifier mostly.
SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
NestedNameSpecifierLoc NNS = FromNNS;
// Push each of the nested-name-specifiers's onto a stack for
// serialization in reverse order.
while (NNS) {
NestedNames.push_back(NNS);
NNS = NNS.getPrefix();
}
NestedNameSpecifierLocBuilder Builder;
while (!NestedNames.empty()) {
NNS = NestedNames.pop_back_val();
NestedNameSpecifier *Spec = nullptr;
if (Error Err = importInto(Spec, NNS.getNestedNameSpecifier()))
return std::move(Err);
NestedNameSpecifier::SpecifierKind Kind = Spec->getKind();
SourceLocation ToLocalBeginLoc, ToLocalEndLoc;
if (Kind != NestedNameSpecifier::Super) {
if (Error Err = importInto(ToLocalBeginLoc, NNS.getLocalBeginLoc()))
return std::move(Err);
if (Kind != NestedNameSpecifier::Global)
if (Error Err = importInto(ToLocalEndLoc, NNS.getLocalEndLoc()))
return std::move(Err);
}
switch (Kind) {
case NestedNameSpecifier::Identifier:
Builder.Extend(getToContext(), Spec->getAsIdentifier(), ToLocalBeginLoc,
ToLocalEndLoc);
break;
case NestedNameSpecifier::Namespace:
Builder.Extend(getToContext(), Spec->getAsNamespace(), ToLocalBeginLoc,
ToLocalEndLoc);
break;
case NestedNameSpecifier::NamespaceAlias:
Builder.Extend(getToContext(), Spec->getAsNamespaceAlias(),
ToLocalBeginLoc, ToLocalEndLoc);
break;
case NestedNameSpecifier::TypeSpec:
case NestedNameSpecifier::TypeSpecWithTemplate: {
SourceLocation ToTLoc;
if (Error Err = importInto(ToTLoc, NNS.getTypeLoc().getBeginLoc()))
return std::move(Err);
TypeSourceInfo *TSI = getToContext().getTrivialTypeSourceInfo(
QualType(Spec->getAsType(), 0), ToTLoc);
if (Kind == NestedNameSpecifier::TypeSpecWithTemplate)
// ToLocalBeginLoc is here the location of the 'template' keyword.
Builder.Extend(getToContext(), ToLocalBeginLoc, TSI->getTypeLoc(),
ToLocalEndLoc);
else
// No location for 'template' keyword here.
Builder.Extend(getToContext(), SourceLocation{}, TSI->getTypeLoc(),
ToLocalEndLoc);
break;
}
case NestedNameSpecifier::Global:
Builder.MakeGlobal(getToContext(), ToLocalBeginLoc);
break;
case NestedNameSpecifier::Super: {
auto ToSourceRangeOrErr = Import(NNS.getSourceRange());
if (!ToSourceRangeOrErr)
return ToSourceRangeOrErr.takeError();
Builder.MakeSuper(getToContext(), Spec->getAsRecordDecl(),
ToSourceRangeOrErr->getBegin(),
ToSourceRangeOrErr->getEnd());
}
}
}
return Builder.getWithLocInContext(getToContext());
}
Expected<TemplateName> ASTImporter::Import(TemplateName From) {
switch (From.getKind()) {
case TemplateName::Template:
if (ExpectedDecl ToTemplateOrErr = Import(From.getAsTemplateDecl()))
return TemplateName(cast<TemplateDecl>((*ToTemplateOrErr)->getCanonicalDecl()));
else
return ToTemplateOrErr.takeError();
case TemplateName::OverloadedTemplate: {
OverloadedTemplateStorage *FromStorage = From.getAsOverloadedTemplate();
UnresolvedSet<2> ToTemplates;
for (auto *I : *FromStorage) {
if (auto ToOrErr = Import(I))
ToTemplates.addDecl(cast<NamedDecl>(*ToOrErr));
else
return ToOrErr.takeError();
}
return ToContext.getOverloadedTemplateName(ToTemplates.begin(),
ToTemplates.end());
}
case TemplateName::AssumedTemplate: {
AssumedTemplateStorage *FromStorage = From.getAsAssumedTemplateName();
auto DeclNameOrErr = Import(FromStorage->getDeclName());
if (!DeclNameOrErr)
return DeclNameOrErr.takeError();
return ToContext.getAssumedTemplateName(*DeclNameOrErr);
}
case TemplateName::QualifiedTemplate: {
QualifiedTemplateName *QTN = From.getAsQualifiedTemplateName();
auto QualifierOrErr = Import(QTN->getQualifier());
if (!QualifierOrErr)
return QualifierOrErr.takeError();
auto TNOrErr = Import(QTN->getUnderlyingTemplate());
if (!TNOrErr)
return TNOrErr.takeError();
return ToContext.getQualifiedTemplateName(
*QualifierOrErr, QTN->hasTemplateKeyword(), *TNOrErr);
}
case TemplateName::DependentTemplate: {
DependentTemplateName *DTN = From.getAsDependentTemplateName();
auto QualifierOrErr = Import(DTN->getQualifier());
if (!QualifierOrErr)
return QualifierOrErr.takeError();
if (DTN->isIdentifier()) {
return ToContext.getDependentTemplateName(*QualifierOrErr,
Import(DTN->getIdentifier()));
}
return ToContext.getDependentTemplateName(*QualifierOrErr,
DTN->getOperator());
}
case TemplateName::SubstTemplateTemplateParm: {
SubstTemplateTemplateParmStorage *Subst =
From.getAsSubstTemplateTemplateParm();
auto ReplacementOrErr = Import(Subst->getReplacement());
if (!ReplacementOrErr)
return ReplacementOrErr.takeError();
auto AssociatedDeclOrErr = Import(Subst->getAssociatedDecl());
if (!AssociatedDeclOrErr)
return AssociatedDeclOrErr.takeError();
return ToContext.getSubstTemplateTemplateParm(
*ReplacementOrErr, *AssociatedDeclOrErr, Subst->getIndex(),
Subst->getPackIndex());
}
case TemplateName::SubstTemplateTemplateParmPack: {
SubstTemplateTemplateParmPackStorage *SubstPack =
From.getAsSubstTemplateTemplateParmPack();
ASTNodeImporter Importer(*this);
auto ArgPackOrErr =
Importer.ImportTemplateArgument(SubstPack->getArgumentPack());
if (!ArgPackOrErr)
return ArgPackOrErr.takeError();
auto AssociatedDeclOrErr = Import(SubstPack->getAssociatedDecl());
if (!AssociatedDeclOrErr)
return AssociatedDeclOrErr.takeError();
return ToContext.getSubstTemplateTemplateParmPack(
*ArgPackOrErr, *AssociatedDeclOrErr, SubstPack->getIndex(),
SubstPack->getFinal());
}
case TemplateName::UsingTemplate: {
auto UsingOrError = Import(From.getAsUsingShadowDecl());
if (!UsingOrError)
return UsingOrError.takeError();
return TemplateName(cast<UsingShadowDecl>(*UsingOrError));
}
}
llvm_unreachable("Invalid template name kind");
}
Expected<SourceLocation> ASTImporter::Import(SourceLocation FromLoc) {
if (FromLoc.isInvalid())
return SourceLocation{};
SourceManager &FromSM = FromContext.getSourceManager();
bool IsBuiltin = FromSM.isWrittenInBuiltinFile(FromLoc);
std::pair<FileID, unsigned> Decomposed = FromSM.getDecomposedLoc(FromLoc);
Expected<FileID> ToFileIDOrErr = Import(Decomposed.first, IsBuiltin);
if (!ToFileIDOrErr)
return ToFileIDOrErr.takeError();
SourceManager &ToSM = ToContext.getSourceManager();
return ToSM.getComposedLoc(*ToFileIDOrErr, Decomposed.second);
}
Expected<SourceRange> ASTImporter::Import(SourceRange FromRange) {
SourceLocation ToBegin, ToEnd;
if (Error Err = importInto(ToBegin, FromRange.getBegin()))
return std::move(Err);
if (Error Err = importInto(ToEnd, FromRange.getEnd()))
return std::move(Err);
return SourceRange(ToBegin, ToEnd);
}
Expected<FileID> ASTImporter::Import(FileID FromID, bool IsBuiltin) {
llvm::DenseMap<FileID, FileID>::iterator Pos = ImportedFileIDs.find(FromID);
if (Pos != ImportedFileIDs.end())
return Pos->second;
SourceManager &FromSM = FromContext.getSourceManager();
SourceManager &ToSM = ToContext.getSourceManager();
const SrcMgr::SLocEntry &FromSLoc = FromSM.getSLocEntry(FromID);
// Map the FromID to the "to" source manager.
FileID ToID;
if (FromSLoc.isExpansion()) {
const SrcMgr::ExpansionInfo &FromEx = FromSLoc.getExpansion();
ExpectedSLoc ToSpLoc = Import(FromEx.getSpellingLoc());
if (!ToSpLoc)
return ToSpLoc.takeError();
ExpectedSLoc ToExLocS = Import(FromEx.getExpansionLocStart());
if (!ToExLocS)
return ToExLocS.takeError();
unsigned ExLength = FromSM.getFileIDSize(FromID);
SourceLocation MLoc;
if (FromEx.isMacroArgExpansion()) {
MLoc = ToSM.createMacroArgExpansionLoc(*ToSpLoc, *ToExLocS, ExLength);
} else {
if (ExpectedSLoc ToExLocE = Import(FromEx.getExpansionLocEnd()))
MLoc = ToSM.createExpansionLoc(*ToSpLoc, *ToExLocS, *ToExLocE, ExLength,
FromEx.isExpansionTokenRange());
else
return ToExLocE.takeError();
}
ToID = ToSM.getFileID(MLoc);
} else {
const SrcMgr::ContentCache *Cache = &FromSLoc.getFile().getContentCache();
if (!IsBuiltin && !Cache->BufferOverridden) {
// Include location of this file.
ExpectedSLoc ToIncludeLoc = Import(FromSLoc.getFile().getIncludeLoc());
if (!ToIncludeLoc)
return ToIncludeLoc.takeError();
// Every FileID that is not the main FileID needs to have a valid include
// location so that the include chain points to the main FileID. When
// importing the main FileID (which has no include location), we need to
// create a fake include location in the main file to keep this property
// intact.
SourceLocation ToIncludeLocOrFakeLoc = *ToIncludeLoc;
if (FromID == FromSM.getMainFileID())
ToIncludeLocOrFakeLoc = ToSM.getLocForStartOfFile(ToSM.getMainFileID());
if (Cache->OrigEntry && Cache->OrigEntry->getDir()) {
// FIXME: We probably want to use getVirtualFile(), so we don't hit the
// disk again
// FIXME: We definitely want to re-use the existing MemoryBuffer, rather
// than mmap the files several times.
auto Entry =
ToFileManager.getOptionalFileRef(Cache->OrigEntry->getName());
// FIXME: The filename may be a virtual name that does probably not
// point to a valid file and we get no Entry here. In this case try with
// the memory buffer below.
if (Entry)
ToID = ToSM.createFileID(*Entry, ToIncludeLocOrFakeLoc,
FromSLoc.getFile().getFileCharacteristic());
}
}
if (ToID.isInvalid() || IsBuiltin) {
// FIXME: We want to re-use the existing MemoryBuffer!
std::optional<llvm::MemoryBufferRef> FromBuf =
Cache->getBufferOrNone(FromContext.getDiagnostics(),
FromSM.getFileManager(), SourceLocation{});
if (!FromBuf)
return llvm::make_error<ASTImportError>(ASTImportError::Unknown);
std::unique_ptr<llvm::MemoryBuffer> ToBuf =
llvm::MemoryBuffer::getMemBufferCopy(FromBuf->getBuffer(),
FromBuf->getBufferIdentifier());
ToID = ToSM.createFileID(std::move(ToBuf),
FromSLoc.getFile().getFileCharacteristic());
}
}
assert(ToID.isValid() && "Unexpected invalid fileID was created.");
ImportedFileIDs[FromID] = ToID;
return ToID;
}
Expected<CXXCtorInitializer *> ASTImporter::Import(CXXCtorInitializer *From) {
ExpectedExpr ToExprOrErr = Import(From->getInit());
if (!ToExprOrErr)
return ToExprOrErr.takeError();
auto LParenLocOrErr = Import(From->getLParenLoc());
if (!LParenLocOrErr)
return LParenLocOrErr.takeError();
auto RParenLocOrErr = Import(From->getRParenLoc());
if (!RParenLocOrErr)
return RParenLocOrErr.takeError();
if (From->isBaseInitializer()) {
auto ToTInfoOrErr = Import(From->getTypeSourceInfo());
if (!ToTInfoOrErr)
return ToTInfoOrErr.takeError();
SourceLocation EllipsisLoc;
if (From->isPackExpansion())
if (Error Err = importInto(EllipsisLoc, From->getEllipsisLoc()))
return std::move(Err);
return new (ToContext) CXXCtorInitializer(
ToContext, *ToTInfoOrErr, From->isBaseVirtual(), *LParenLocOrErr,
*ToExprOrErr, *RParenLocOrErr, EllipsisLoc);
} else if (From->isMemberInitializer()) {
ExpectedDecl ToFieldOrErr = Import(From->getMember());
if (!ToFieldOrErr)
return ToFieldOrErr.takeError();
auto MemberLocOrErr = Import(From->getMemberLocation());
if (!MemberLocOrErr)
return MemberLocOrErr.takeError();
return new (ToContext) CXXCtorInitializer(
ToContext, cast_or_null<FieldDecl>(*ToFieldOrErr), *MemberLocOrErr,
*LParenLocOrErr, *ToExprOrErr, *RParenLocOrErr);
} else if (From->isIndirectMemberInitializer()) {
ExpectedDecl ToIFieldOrErr = Import(From->getIndirectMember());
if (!ToIFieldOrErr)
return ToIFieldOrErr.takeError();
auto MemberLocOrErr = Import(From->getMemberLocation());
if (!MemberLocOrErr)
return MemberLocOrErr.takeError();
return new (ToContext) CXXCtorInitializer(
ToContext, cast_or_null<IndirectFieldDecl>(*ToIFieldOrErr),
*MemberLocOrErr, *LParenLocOrErr, *ToExprOrErr, *RParenLocOrErr);
} else if (From->isDelegatingInitializer()) {
auto ToTInfoOrErr = Import(From->getTypeSourceInfo());
if (!ToTInfoOrErr)
return ToTInfoOrErr.takeError();
return new (ToContext)
CXXCtorInitializer(ToContext, *ToTInfoOrErr, *LParenLocOrErr,
*ToExprOrErr, *RParenLocOrErr);
} else {
// FIXME: assert?
return make_error<ASTImportError>();
}
}
Expected<CXXBaseSpecifier *>
ASTImporter::Import(const CXXBaseSpecifier *BaseSpec) {
auto Pos = ImportedCXXBaseSpecifiers.find(BaseSpec);
if (Pos != ImportedCXXBaseSpecifiers.end())
return Pos->second;
Expected<SourceRange> ToSourceRange = Import(BaseSpec->getSourceRange());
if (!ToSourceRange)
return ToSourceRange.takeError();
Expected<TypeSourceInfo *> ToTSI = Import(BaseSpec->getTypeSourceInfo());
if (!ToTSI)
return ToTSI.takeError();
ExpectedSLoc ToEllipsisLoc = Import(BaseSpec->getEllipsisLoc());
if (!ToEllipsisLoc)
return ToEllipsisLoc.takeError();
CXXBaseSpecifier *Imported = new (ToContext) CXXBaseSpecifier(
*ToSourceRange, BaseSpec->isVirtual(), BaseSpec->isBaseOfClass(),
BaseSpec->getAccessSpecifierAsWritten(), *ToTSI, *ToEllipsisLoc);
ImportedCXXBaseSpecifiers[BaseSpec] = Imported;
return Imported;
}
llvm::Expected<APValue> ASTImporter::Import(const APValue &FromValue) {
ASTNodeImporter Importer(*this);
return Importer.ImportAPValue(FromValue);
}
Error ASTImporter::ImportDefinition(Decl *From) {
ExpectedDecl ToOrErr = Import(From);
if (!ToOrErr)
return ToOrErr.takeError();
Decl *To = *ToOrErr;
auto *FromDC = cast<DeclContext>(From);
ASTNodeImporter Importer(*this);
if (auto *ToRecord = dyn_cast<RecordDecl>(To)) {
if (!ToRecord->getDefinition()) {
return Importer.ImportDefinition(
cast<RecordDecl>(FromDC), ToRecord,
ASTNodeImporter::IDK_Everything);
}
}
if (auto *ToEnum = dyn_cast<EnumDecl>(To)) {
if (!ToEnum->getDefinition()) {
return Importer.ImportDefinition(
cast<EnumDecl>(FromDC), ToEnum, ASTNodeImporter::IDK_Everything);
}
}
if (auto *ToIFace = dyn_cast<ObjCInterfaceDecl>(To)) {
if (!ToIFace->getDefinition()) {
return Importer.ImportDefinition(
cast<ObjCInterfaceDecl>(FromDC), ToIFace,
ASTNodeImporter::IDK_Everything);
}
}
if (auto *ToProto = dyn_cast<ObjCProtocolDecl>(To)) {
if (!ToProto->getDefinition()) {
return Importer.ImportDefinition(
cast<ObjCProtocolDecl>(FromDC), ToProto,
ASTNodeImporter::IDK_Everything);
}
}
return Importer.ImportDeclContext(FromDC, true);
}
Expected<DeclarationName> ASTImporter::Import(DeclarationName FromName) {
if (!FromName)
return DeclarationName{};
switch (FromName.getNameKind()) {
case DeclarationName::Identifier:
return DeclarationName(Import(FromName.getAsIdentifierInfo()));
case DeclarationName::ObjCZeroArgSelector:
case DeclarationName::ObjCOneArgSelector:
case DeclarationName::ObjCMultiArgSelector:
if (auto ToSelOrErr = Import(FromName.getObjCSelector()))
return DeclarationName(*ToSelOrErr);
else
return ToSelOrErr.takeError();
case DeclarationName::CXXConstructorName: {
if (auto ToTyOrErr = Import(FromName.getCXXNameType()))
return ToContext.DeclarationNames.getCXXConstructorName(
ToContext.getCanonicalType(*ToTyOrErr));
else
return ToTyOrErr.takeError();
}
case DeclarationName::CXXDestructorName: {
if (auto ToTyOrErr = Import(FromName.getCXXNameType()))
return ToContext.DeclarationNames.getCXXDestructorName(
ToContext.getCanonicalType(*ToTyOrErr));
else
return ToTyOrErr.takeError();
}
case DeclarationName::CXXDeductionGuideName: {
if (auto ToTemplateOrErr = Import(FromName.getCXXDeductionGuideTemplate()))
return ToContext.DeclarationNames.getCXXDeductionGuideName(
cast<TemplateDecl>(*ToTemplateOrErr));
else
return ToTemplateOrErr.takeError();
}
case DeclarationName::CXXConversionFunctionName: {
if (auto ToTyOrErr = Import(FromName.getCXXNameType()))
return ToContext.DeclarationNames.getCXXConversionFunctionName(
ToContext.getCanonicalType(*ToTyOrErr));
else
return ToTyOrErr.takeError();
}
case DeclarationName::CXXOperatorName:
return ToContext.DeclarationNames.getCXXOperatorName(
FromName.getCXXOverloadedOperator());
case DeclarationName::CXXLiteralOperatorName:
return ToContext.DeclarationNames.getCXXLiteralOperatorName(
Import(FromName.getCXXLiteralIdentifier()));
case DeclarationName::CXXUsingDirective:
// FIXME: STATICS!
return DeclarationName::getUsingDirectiveName();
}
llvm_unreachable("Invalid DeclarationName Kind!");
}
IdentifierInfo *ASTImporter::Import(const IdentifierInfo *FromId) {
if (!FromId)
return nullptr;
IdentifierInfo *ToId = &ToContext.Idents.get(FromId->getName());
if (!ToId->getBuiltinID() && FromId->getBuiltinID())
ToId->setBuiltinID(FromId->getBuiltinID());
return ToId;
}
Expected<Selector> ASTImporter::Import(Selector FromSel) {
if (FromSel.isNull())
return Selector{};
SmallVector<const IdentifierInfo *, 4> Idents;
Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(0)));
for (unsigned I = 1, N = FromSel.getNumArgs(); I < N; ++I)
Idents.push_back(Import(FromSel.getIdentifierInfoForSlot(I)));
return ToContext.Selectors.getSelector(FromSel.getNumArgs(), Idents.data());
}
llvm::Expected<APValue>
ASTNodeImporter::ImportAPValue(const APValue &FromValue) {
APValue Result;
llvm::Error Err = llvm::Error::success();
auto ImportLoop = [&](const APValue *From, APValue *To, unsigned Size) {
for (unsigned Idx = 0; Idx < Size; Idx++) {
APValue Tmp = importChecked(Err, From[Idx]);
To[Idx] = Tmp;
}
};
switch (FromValue.getKind()) {
case APValue::None:
case APValue::Indeterminate:
case APValue::Int:
case APValue::Float:
case APValue::FixedPoint:
case APValue::ComplexInt:
case APValue::ComplexFloat:
Result = FromValue;
break;
case APValue::Vector: {
Result.MakeVector();
MutableArrayRef<APValue> Elts =
Result.setVectorUninit(FromValue.getVectorLength());
ImportLoop(((const APValue::Vec *)(const char *)&FromValue.Data)->Elts,
Elts.data(), FromValue.getVectorLength());
break;
}
case APValue::Array:
Result.MakeArray(FromValue.getArrayInitializedElts(),
FromValue.getArraySize());
ImportLoop(((const APValue::Arr *)(const char *)&FromValue.Data)->Elts,
((const APValue::Arr *)(const char *)&Result.Data)->Elts,
FromValue.getArrayInitializedElts());
break;
case APValue::Struct:
Result.MakeStruct(FromValue.getStructNumBases(),
FromValue.getStructNumFields());
ImportLoop(
((const APValue::StructData *)(const char *)&FromValue.Data)->Elts,
((const APValue::StructData *)(const char *)&Result.Data)->Elts,
FromValue.getStructNumBases() + FromValue.getStructNumFields());
break;
case APValue::Union: {
Result.MakeUnion();
const Decl *ImpFDecl = importChecked(Err, FromValue.getUnionField());
APValue ImpValue = importChecked(Err, FromValue.getUnionValue());
if (Err)
return std::move(Err);
Result.setUnion(cast<FieldDecl>(ImpFDecl), ImpValue);
break;
}
case APValue::AddrLabelDiff: {
Result.MakeAddrLabelDiff();
const Expr *ImpLHS = importChecked(Err, FromValue.getAddrLabelDiffLHS());
const Expr *ImpRHS = importChecked(Err, FromValue.getAddrLabelDiffRHS());
if (Err)
return std::move(Err);
Result.setAddrLabelDiff(cast<AddrLabelExpr>(ImpLHS),
cast<AddrLabelExpr>(ImpRHS));
break;
}
case APValue::MemberPointer: {
const Decl *ImpMemPtrDecl =
importChecked(Err, FromValue.getMemberPointerDecl());
if (Err)
return std::move(Err);
MutableArrayRef<const CXXRecordDecl *> ToPath =
Result.setMemberPointerUninit(
cast<const ValueDecl>(ImpMemPtrDecl),
FromValue.isMemberPointerToDerivedMember(),
FromValue.getMemberPointerPath().size());
llvm::ArrayRef<const CXXRecordDecl *> FromPath =
Result.getMemberPointerPath();
for (unsigned Idx = 0; Idx < FromValue.getMemberPointerPath().size();
Idx++) {
const Decl *ImpDecl = importChecked(Err, FromPath[Idx]);
if (Err)
return std::move(Err);
ToPath[Idx] = cast<const CXXRecordDecl>(ImpDecl->getCanonicalDecl());
}
break;
}
case APValue::LValue:
APValue::LValueBase Base;
QualType FromElemTy;
if (FromValue.getLValueBase()) {
assert(!FromValue.getLValueBase().is<DynamicAllocLValue>() &&
"in C++20 dynamic allocation are transient so they shouldn't "
"appear in the AST");
if (!FromValue.getLValueBase().is<TypeInfoLValue>()) {
if (const auto *E =
FromValue.getLValueBase().dyn_cast<const Expr *>()) {
FromElemTy = E->getType();
const Expr *ImpExpr = importChecked(Err, E);
if (Err)
return std::move(Err);
Base = APValue::LValueBase(ImpExpr,
FromValue.getLValueBase().getCallIndex(),
FromValue.getLValueBase().getVersion());
} else {
FromElemTy =
FromValue.getLValueBase().get<const ValueDecl *>()->getType();
const Decl *ImpDecl = importChecked(
Err, FromValue.getLValueBase().get<const ValueDecl *>());
if (Err)
return std::move(Err);
Base = APValue::LValueBase(cast<ValueDecl>(ImpDecl),
FromValue.getLValueBase().getCallIndex(),
FromValue.getLValueBase().getVersion());
}
} else {
FromElemTy = FromValue.getLValueBase().getTypeInfoType();
const Type *ImpTypeInfo = importChecked(
Err, FromValue.getLValueBase().get<TypeInfoLValue>().getType());
QualType ImpType =
importChecked(Err, FromValue.getLValueBase().getTypeInfoType());
if (Err)
return std::move(Err);
Base = APValue::LValueBase::getTypeInfo(TypeInfoLValue(ImpTypeInfo),
ImpType);
}
}
CharUnits Offset = FromValue.getLValueOffset();
unsigned PathLength = FromValue.getLValuePath().size();
Result.MakeLValue();
if (FromValue.hasLValuePath()) {
MutableArrayRef<APValue::LValuePathEntry> ToPath = Result.setLValueUninit(
Base, Offset, PathLength, FromValue.isLValueOnePastTheEnd(),
FromValue.isNullPointer());
llvm::ArrayRef<APValue::LValuePathEntry> FromPath =
FromValue.getLValuePath();
for (unsigned LoopIdx = 0; LoopIdx < PathLength; LoopIdx++) {
if (FromElemTy->isRecordType()) {
const Decl *FromDecl =
FromPath[LoopIdx].getAsBaseOrMember().getPointer();
const Decl *ImpDecl = importChecked(Err, FromDecl);
if (Err)
return std::move(Err);
if (auto *RD = dyn_cast<CXXRecordDecl>(FromDecl))
FromElemTy = Importer.FromContext.getRecordType(RD);
else
FromElemTy = cast<ValueDecl>(FromDecl)->getType();
ToPath[LoopIdx] = APValue::LValuePathEntry(APValue::BaseOrMemberType(
ImpDecl, FromPath[LoopIdx].getAsBaseOrMember().getInt()));
} else {
FromElemTy =
Importer.FromContext.getAsArrayType(FromElemTy)->getElementType();
ToPath[LoopIdx] = APValue::LValuePathEntry::ArrayIndex(
FromPath[LoopIdx].getAsArrayIndex());
}
}
} else
Result.setLValue(Base, Offset, APValue::NoLValuePath{},
FromValue.isNullPointer());
}
if (Err)
return std::move(Err);
return Result;
}
Expected<DeclarationName> ASTImporter::HandleNameConflict(DeclarationName Name,
DeclContext *DC,
unsigned IDNS,
NamedDecl **Decls,
unsigned NumDecls) {
if (ODRHandling == ODRHandlingType::Conservative)
// Report error at any name conflict.
return make_error<ASTImportError>(ASTImportError::NameConflict);
else
// Allow to create the new Decl with the same name.
return Name;
}
DiagnosticBuilder ASTImporter::ToDiag(SourceLocation Loc, unsigned DiagID) {
if (LastDiagFromFrom)
ToContext.getDiagnostics().notePriorDiagnosticFrom(
FromContext.getDiagnostics());
LastDiagFromFrom = false;
return ToContext.getDiagnostics().Report(Loc, DiagID);
}
DiagnosticBuilder ASTImporter::FromDiag(SourceLocation Loc, unsigned DiagID) {
if (!LastDiagFromFrom)
FromContext.getDiagnostics().notePriorDiagnosticFrom(
ToContext.getDiagnostics());
LastDiagFromFrom = true;
return FromContext.getDiagnostics().Report(Loc, DiagID);
}
void ASTImporter::CompleteDecl (Decl *D) {
if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
if (!ID->getDefinition())
ID->startDefinition();
}
else if (auto *PD = dyn_cast<ObjCProtocolDecl>(D)) {
if (!PD->getDefinition())
PD->startDefinition();
}
else if (auto *TD = dyn_cast<TagDecl>(D)) {
if (!TD->getDefinition() && !TD->isBeingDefined()) {
TD->startDefinition();
TD->setCompleteDefinition(true);
}
}
else {
assert(0 && "CompleteDecl called on a Decl that can't be completed");
}
}
Decl *ASTImporter::MapImported(Decl *From, Decl *To) {
llvm::DenseMap<Decl *, Decl *>::iterator Pos = ImportedDecls.find(From);
assert((Pos == ImportedDecls.end() || Pos->second == To) &&
"Try to import an already imported Decl");
if (Pos != ImportedDecls.end())
return Pos->second;
ImportedDecls[From] = To;
// This mapping should be maintained only in this function. Therefore do not
// check for additional consistency.
ImportedFromDecls[To] = From;
// In the case of TypedefNameDecl we create the Decl first and only then we
// import and set its DeclContext. So, the DC is still not set when we reach
// here from GetImportedOrCreateDecl.
if (To->getDeclContext())
AddToLookupTable(To);
return To;
}
std::optional<ASTImportError>
ASTImporter::getImportDeclErrorIfAny(Decl *FromD) const {
auto Pos = ImportDeclErrors.find(FromD);
if (Pos != ImportDeclErrors.end())
return Pos->second;
else
return std::nullopt;
}
void ASTImporter::setImportDeclError(Decl *From, ASTImportError Error) {
auto InsertRes = ImportDeclErrors.insert({From, Error});
(void)InsertRes;
// Either we set the error for the first time, or we already had set one and
// now we want to set the same error.
assert(InsertRes.second || InsertRes.first->second.Error == Error.Error);
}
bool ASTImporter::IsStructurallyEquivalent(QualType From, QualType To,
bool Complain) {
llvm::DenseMap<const Type *, const Type *>::iterator Pos =
ImportedTypes.find(From.getTypePtr());
if (Pos != ImportedTypes.end()) {
if (ExpectedType ToFromOrErr = Import(From)) {
if (ToContext.hasSameType(*ToFromOrErr, To))
return true;
} else {
llvm::consumeError(ToFromOrErr.takeError());
}
}
StructuralEquivalenceContext Ctx(FromContext, ToContext, NonEquivalentDecls,
getStructuralEquivalenceKind(*this), false,
Complain);
return Ctx.IsEquivalent(From, To);
}