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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include "sourcelocationsutils.h"
#include <filepathcachinginterface.h>
#include <utils/linecolumn.h>
#include <utils/optional.h>
#include <clang/Basic/SourceLocation.h>
#include <clang/Basic/SourceManager.h>
#include <clang/Index/USRGeneration.h>
#include <llvm/ADT/SmallVector.h>
namespace ClangBackEnd {
class SymbolsVisitorBase
{
public:
SymbolsVisitorBase(FilePathCachingInterface &filePathCache,
const clang::SourceManager &sourceManager)
: m_filePathCache(filePathCache),
m_sourceManager(sourceManager)
{}
FilePathId filePathId(clang::SourceLocation sourceLocation)
{
clang::FileID clangFileId = m_sourceManager.getFileID(sourceLocation);
const clang::FileEntry *fileEntry = m_sourceManager.getFileEntryForID(clangFileId);
return filePathId(fileEntry);
}
FilePathId filePathId(const clang::FileEntry *fileEntry)
{
if (fileEntry) {
uint fileHash = fileEntry->getUID();
auto found = m_filePathIndices.find(fileHash);
if (found != m_filePathIndices.end())
return found->second;
auto filePath = fileEntry->getName();
FilePathId filePathId = m_filePathCache.filePathId(FilePath::fromNativeFilePath(absolutePath(filePath)));
m_filePathIndices.emplace(fileHash, filePathId);
return filePathId;
}
return {};
}
Utils::LineColumn lineColum(clang::SourceLocation sourceLocation)
{
return {int(m_sourceManager.getSpellingLineNumber(sourceLocation)),
int(m_sourceManager.getSpellingColumnNumber(sourceLocation))};
}
static Utils::optional<Utils::PathString> generateUSR(const clang::Decl *declaration)
{
llvm::SmallVector<char, 128> usr;
Utils::optional<Utils::PathString> usrOptional;
bool wasNotWorking = clang::index::generateUSRForDecl(declaration, usr);
if (!wasNotWorking)
usrOptional.emplace(usr.data(), usr.size());
return usrOptional;
}
Utils::optional<Utils::PathString> generateUSR(clang::StringRef macroName,
clang::SourceLocation sourceLocation)
{
llvm::SmallVector<char, 128> usr;
Utils::optional<Utils::PathString> usrOptional;
bool wasNotWorking = clang::index::generateUSRForMacro(macroName,
sourceLocation,
m_sourceManager,
usr);
if (!wasNotWorking)
usrOptional.emplace(usr.data(), usr.size());
return usrOptional;
}
static SymbolIndex toSymbolIndex(const void *pointer)
{
return SymbolIndex(reinterpret_cast<std::uintptr_t>(pointer));
}
protected:
std::unordered_map<uint, FilePathId> m_filePathIndices;
FilePathCachingInterface &m_filePathCache;
const clang::SourceManager &m_sourceManager;
};
} // namespace ClangBackend
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