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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "Util.h"
#include "clang/AST/Decl.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/raw_ostream.h"
namespace {
std::string GetNamespaceImpl(const clang::DeclContext* context,
const std::string& candidate) {
switch (context->getDeclKind()) {
case clang::Decl::TranslationUnit: {
return candidate;
}
case clang::Decl::Namespace: {
const auto* decl = llvm::dyn_cast<clang::NamespaceDecl>(context);
std::string name_str;
llvm::raw_string_ostream OS(name_str);
if (decl->isAnonymousNamespace())
OS << "<anonymous namespace>";
else
OS << *decl;
return GetNamespaceImpl(context->getParent(), OS.str());
}
default: { return GetNamespaceImpl(context->getParent(), candidate); }
}
}
} // namespace
std::string GetNamespace(const clang::Decl* record) {
return GetNamespaceImpl(record->getDeclContext(), std::string());
}
std::string GetFilename(clang::CompilerInstance& instance,
clang::SourceLocation location) {
const clang::SourceManager& source_manager = instance.getSourceManager();
clang::SourceLocation spelling_location =
source_manager.getSpellingLoc(location);
clang::PresumedLoc ploc = source_manager.getPresumedLoc(spelling_location);
if (ploc.isInvalid()) {
// If we're in an invalid location, we're looking at things that aren't
// actually stated in the source.
return "";
}
return ploc.getFilename();
}
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