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/****************************************************************************
**
** Copyright (C) 2016 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
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
#include <clang/Basic/SourceManager.h>
#include <clang/Lex/MacroInfo.h>
#include <clang/Lex/HeaderSearch.h>
#include <clang/Lex/PPCallbacks.h>
#include <clang/Lex/Preprocessor.h>
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
#include <utils/smallstringvector.h>
#include <algorithm>
#include <QDebug>
namespace ClangBackEnd {
class CollectIncludesPreprocessorCallbacks final : public clang::PPCallbacks
{
public:
CollectIncludesPreprocessorCallbacks(clang::HeaderSearch &headerSearch,
Utils::SmallStringVector &includes,
const std::vector<uint> &excludedIncludeUID,
std::vector<uint> &alreadyIncludedFileUIDs)
: headerSearch(headerSearch),
includes(includes),
excludedIncludeUID(excludedIncludeUID),
alreadyIncludedFileUIDs(alreadyIncludedFileUIDs)
{}
void InclusionDirective(clang::SourceLocation /*hashLocation*/,
const clang::Token &/*includeToken*/,
llvm::StringRef fileName,
bool /*isAngled*/,
clang::CharSourceRange /*fileNameRange*/,
const clang::FileEntry *file,
llvm::StringRef /*searchPath*/,
llvm::StringRef /*relativePath*/,
const clang::Module */*imported*/) override
{
auto fileUID = file->getUID();
flagIncludeAlreadyRead(file);
if (isNotInExcludedIncludeUID(fileUID)) {
auto notAlreadyIncluded = isNotAlreadyIncluded(fileUID);
if (notAlreadyIncluded.first) {
alreadyIncludedFileUIDs.insert(notAlreadyIncluded.second, file->getUID());
includes.emplace_back(fileName.data(), fileName.size());
}
}
}
bool isNotInExcludedIncludeUID(uint uid) const
{
return !std::binary_search(excludedIncludeUID.begin(),
excludedIncludeUID.end(),
uid);
}
std::pair<bool, std::vector<uint>::iterator> isNotAlreadyIncluded(uint uid)
{
auto range = std::equal_range(alreadyIncludedFileUIDs.begin(),
alreadyIncludedFileUIDs.end(),
uid);
return {range.first == range.second, range.first};
}
void flagIncludeAlreadyRead(const clang::FileEntry *file)
{
auto &headerFileInfo = headerSearch.getFileInfo(file);
headerFileInfo.isImport = true;
++headerFileInfo.NumIncludes;
}
private:
clang::HeaderSearch &headerSearch;
std::vector<Utils::SmallString> &includes;
const std::vector<uint> &excludedIncludeUID;
std::vector<uint> &alreadyIncludedFileUIDs;
};
} // namespace ClangBackEnd
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