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//===- ExtractAPI/TypedefUnderlyingTypeResolver.cpp -------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file implements UnderlyingTypeResolver.
///
//===----------------------------------------------------------------------===//
#include "TypedefUnderlyingTypeResolver.h"
#include "clang/Index/USRGeneration.h"
using namespace clang;
using namespace extractapi;
namespace {
const NamedDecl *getUnderlyingTypeDecl(QualType Type) {
const NamedDecl *TypeDecl = nullptr;
const TypedefType *TypedefTy = Type->getAs<TypedefType>();
if (TypedefTy)
TypeDecl = TypedefTy->getDecl();
if (const TagType *TagTy = Type->getAs<TagType>()) {
TypeDecl = TagTy->getDecl();
} else if (const ObjCInterfaceType *ObjCITy =
Type->getAs<ObjCInterfaceType>()) {
TypeDecl = ObjCITy->getDecl();
}
if (TypeDecl && TypedefTy) {
// if this is a typedef to another typedef, use the typedef's decl for the
// USR - this will actually be in the output, unlike a typedef to an
// anonymous decl
const TypedefNameDecl *TypedefDecl = TypedefTy->getDecl();
if (TypedefDecl->getUnderlyingType()->isTypedefNameType())
TypeDecl = TypedefDecl;
}
return TypeDecl;
}
} // namespace
SymbolReference
TypedefUnderlyingTypeResolver::getSymbolReferenceForType(QualType Type,
APISet &API) const {
std::string TypeName = Type.getAsString();
SmallString<128> TypeUSR;
const NamedDecl *TypeDecl = getUnderlyingTypeDecl(Type);
const TypedefType *TypedefTy = Type->getAs<TypedefType>();
if (TypeDecl) {
if (!TypedefTy)
TypeName = TypeDecl->getName().str();
clang::index::generateUSRForDecl(TypeDecl, TypeUSR);
} else {
clang::index::generateUSRForType(Type, Context, TypeUSR);
}
return {API.copyString(TypeName), API.copyString(TypeUSR)};
}
std::string TypedefUnderlyingTypeResolver::getUSRForType(QualType Type) const {
SmallString<128> TypeUSR;
const NamedDecl *TypeDecl = getUnderlyingTypeDecl(Type);
if (TypeDecl)
clang::index::generateUSRForDecl(TypeDecl, TypeUSR);
else
clang::index::generateUSRForType(Type, Context, TypeUSR);
return std::string(TypeUSR);
}
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