/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** 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
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****************************************************************************/

#pragma once

#include <sourcelocationscontainer.h>
#include <sourcerangescontainer.h>

#if defined(__GNUC__)
#    pragma GCC diagnostic push
#    pragma GCC diagnostic ignored "-Wunused-parameter"
#elif defined(_MSC_VER)
#    pragma warning(push)
#    pragma warning( disable : 4100 )
#endif

#include <clang/Basic/SourceManager.h>
#include <clang/Lex/Lexer.h>
#include <llvm/Support/FileSystem.h>
#include <llvm/Support/FileUtilities.h>

#if defined(__GNUC__)
#    pragma GCC diagnostic pop
#elif defined(_MSC_VER)
#    pragma warning(pop)
#endif

#include <iterator>
#include <cctype>

namespace ClangBackEnd {

inline
llvm::SmallString<256> absolutePath(clang::StringRef path)
{
    llvm::SmallString<256> absolutePath(path);

    if (!llvm::sys::path::is_absolute(absolutePath))
        llvm::sys::fs::make_absolute(absolutePath);

    return absolutePath;
}

inline
Utils::PathString fromNativePath(const llvm::SmallString<256> &string)
{
    Utils::PathString path(string.data(), string.size());

#ifdef _WIN32
    std::replace(path.begin(), path.end(), '\\', '/');
#endif

    return path;
}

inline
void appendSourceLocationsToSourceLocationsContainer(
        ClangBackEnd::SourceLocationsContainer &sourceLocationsContainer,
        const std::vector<clang::SourceLocation> &sourceLocations,
        const clang::SourceManager &sourceManager)
{
    sourceLocationsContainer.reserve(sourceLocations.size());

    for (const auto &sourceLocation : sourceLocations) {
        clang::FullSourceLoc fullSourceLocation(sourceLocation, sourceManager);
        const auto decomposedLoction = fullSourceLocation.getDecomposedLoc();
        const auto fileId = decomposedLoction.first;
        const auto offset = decomposedLoction.second;
        const auto fileEntry = sourceManager.getFileEntryForID(fileId);

        sourceLocationsContainer.insertFilePath(fileId.getHashValue(),
                                                fromNativePath(absolutePath(fileEntry->getName())));
        sourceLocationsContainer.insertSourceLocation(fileId.getHashValue(),
                                                      fullSourceLocation.getSpellingLineNumber(),
                                                      fullSourceLocation.getSpellingColumnNumber(),
                                                      offset);
    }
}



} // namespace ClangBackEnd
