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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.
**
****************************************************************************/

#include "codecompletionchunkconverter.h"

#include "clangstring.h"

namespace ClangBackEnd {

void CodeCompletionChunkConverter::extractCompletionChunks(CXCompletionString completionString)
{
    const uint completionChunkCount = clang_getNumCompletionChunks(completionString);
    chunks.reserve(completionChunkCount);

    for (uint chunkIndex = 0; chunkIndex < completionChunkCount; ++chunkIndex) {
        const CodeCompletionChunk::Kind kind = chunkKind(completionString, chunkIndex);

        if (kind == CodeCompletionChunk::Optional) {
            extractOptionalCompletionChunks(clang_getCompletionChunkCompletionString(completionString, chunkIndex));
        } else {
            chunks.append(CodeCompletionChunk(kind,
                                              chunkText(completionString, chunkIndex)));
        }
    }
}

void CodeCompletionChunkConverter::extractOptionalCompletionChunks(CXCompletionString completionString)
{
    const uint completionChunkCount = clang_getNumCompletionChunks(completionString);

    for (uint chunkIndex = 0; chunkIndex < completionChunkCount; ++chunkIndex) {
        const CodeCompletionChunk::Kind kind = chunkKind(completionString, chunkIndex);

        if (kind == CodeCompletionChunk::Optional)
            extractOptionalCompletionChunks(clang_getCompletionChunkCompletionString(completionString, chunkIndex));
        else
            chunks.append(CodeCompletionChunk(kind, chunkText(completionString, chunkIndex), true));
    }
}

CodeCompletionChunk::Kind CodeCompletionChunkConverter::chunkKind(CXCompletionString completionString, uint chunkIndex)
{
    return CodeCompletionChunk::Kind(clang_getCompletionChunkKind(completionString, chunkIndex));
}

CodeCompletionChunks CodeCompletionChunkConverter::extract(CXCompletionString completionString)
{
    CodeCompletionChunkConverter converter;

    converter.extractCompletionChunks(completionString);

    return converter.chunks;
}

Utf8String CodeCompletionChunkConverter::chunkText(CXCompletionString completionString, uint chunkIndex)
{
    return ClangString(clang_getCompletionChunkText(completionString, chunkIndex));
}

} // namespace ClangBackEnd