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//===-- ClangUtil.cpp -----------------------------------------------------===//
//
// 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
//
// A collection of helper methods and data structures for manipulating clang
// types and decls.
//===----------------------------------------------------------------------===//
#include "Plugins/ExpressionParser/Clang/ClangUtil.h"
#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
using namespace clang;
using namespace lldb_private;
bool ClangUtil::IsClangType(const CompilerType &ct) {
// Invalid types are never Clang types.
if (!ct)
return false;
if (llvm::dyn_cast_or_null<TypeSystemClang>(ct.GetTypeSystem()) == nullptr)
return false;
if (!ct.GetOpaqueQualType())
return false;
return true;
}
clang::Decl *ClangUtil::GetDecl(const CompilerDecl &decl) {
assert(llvm::isa<TypeSystemClang>(decl.GetTypeSystem()));
return static_cast<clang::Decl *>(decl.GetOpaqueDecl());
}
QualType ClangUtil::GetQualType(const CompilerType &ct) {
// Make sure we have a clang type before making a clang::QualType
if (!IsClangType(ct))
return QualType();
return QualType::getFromOpaquePtr(ct.GetOpaqueQualType());
}
QualType ClangUtil::GetCanonicalQualType(const CompilerType &ct) {
if (!IsClangType(ct))
return QualType();
return GetQualType(ct).getCanonicalType();
}
CompilerType ClangUtil::RemoveFastQualifiers(const CompilerType &ct) {
if (!IsClangType(ct))
return ct;
QualType qual_type(GetQualType(ct));
qual_type.removeLocalFastQualifiers();
return CompilerType(ct.GetTypeSystem(), qual_type.getAsOpaquePtr());
}
clang::TagDecl *ClangUtil::GetAsTagDecl(const CompilerType &type) {
clang::QualType qual_type = ClangUtil::GetCanonicalQualType(type);
if (qual_type.isNull())
return nullptr;
return qual_type->getAsTagDecl();
}
std::string ClangUtil::DumpDecl(const clang::Decl *d) {
if (!d)
return "nullptr";
std::string result;
llvm::raw_string_ostream stream(result);
bool deserialize = false;
d->dump(stream, deserialize);
stream.flush();
return result;
}
std::string ClangUtil::ToString(const clang::Type *t) {
return clang::QualType(t, 0).getAsString();
}
std::string ClangUtil::ToString(const CompilerType &c) {
return ClangUtil::GetQualType(c).getAsString();
}
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