forked from qt-creator/qt-creator
2b84d7611b
Change-Id: I324e88c0d295114390c1fac2745c0d2d47637ece Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>
114 lines
3.0 KiB
C++
114 lines
3.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://www.qt.io/licensing. For further information
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** use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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****************************************************************************/
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#include "readcommandblock.h"
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#include <QDataStream>
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#include <QDebug>
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#include <QIODevice>
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#include <QVariant>
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namespace ClangBackEnd {
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ReadCommandBlock::ReadCommandBlock(QIODevice *ioDevice)
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: ioDevice(ioDevice),
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commandCounter(0),
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blockSize(0)
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{
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}
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void ReadCommandBlock::checkIfCommandIsLost(QDataStream &in)
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{
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qint64 currentCommandCounter;
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in >> currentCommandCounter;
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#ifndef DONT_CHECK_COMMAND_COUNTER
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bool commandLost = !((currentCommandCounter == 0 && commandCounter == 0) || (commandCounter + 1 == currentCommandCounter));
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if (commandLost)
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qWarning() << "client command lost: " << commandCounter << currentCommandCounter;
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#endif
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commandCounter = currentCommandCounter;
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}
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QVariant ReadCommandBlock::read()
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{
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QDataStream in(ioDevice);
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QVariant command;
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if (isTheWholeCommandReadable(in)) {
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checkIfCommandIsLost(in);
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in >> command;
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}
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return command;
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}
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QVector<QVariant> ReadCommandBlock::readAll()
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{
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QVector<QVariant> commands;
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while (true) {
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const QVariant command = read();
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if (command.isValid())
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commands.append(command);
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else
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return commands;
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}
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Q_UNREACHABLE();
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}
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void ReadCommandBlock::resetCounter()
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{
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commandCounter = 0;
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}
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bool ReadCommandBlock::isTheWholeCommandReadable(QDataStream &in)
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{
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if (ioDevice->bytesAvailable() == 0)
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return false;
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if (blockSize == 0)
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in >> blockSize;
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if (ioDevice->bytesAvailable() < blockSize)
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return false;
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blockSize = 0;
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return true;
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}
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} // namespace ClangBackEnd
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