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Diffstat (limited to 'src/declarative/debugger/qjsdebugservice.cpp')
| -rw-r--r-- | src/declarative/debugger/qjsdebugservice.cpp | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/src/declarative/debugger/qjsdebugservice.cpp b/src/declarative/debugger/qjsdebugservice.cpp new file mode 100644 index 00000000..686710dc --- /dev/null +++ b/src/declarative/debugger/qjsdebugservice.cpp @@ -0,0 +1,259 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "private/qjsdebugservice_p.h" +#include "private/qjsdebuggeragent_p.h" + +#include <QtCore/qdatastream.h> +#include <QtCore/qdebug.h> +#include <QtCore/qstringlist.h> +#include <QtDeclarative/qdeclarativeengine.h> + +Q_GLOBAL_STATIC(QJSDebugService, serviceInstance) + +// convert to a QByteArray that can be sent to the debug client +QByteArray JSAgentCoverageData::toByteArray() const +{ + QByteArray data; + //### using QDataStream is relatively expensive + QDataStream ds(&data, QIODevice::WriteOnly); + ds << prefix << time << messageType << scriptId << program << fileName << baseLineNumber + << lineNumber << columnNumber << returnValue; + return data; +} + +QJSDebugService::QJSDebugService(QObject *parent) + : QDeclarativeDebugService(QLatin1String("JSDebugger"), parent) + , m_agent(0), m_deferredSend(true) +{ + m_timer.start(); +} + +QJSDebugService::~QJSDebugService() +{ + delete m_agent; +} + +QJSDebugService *QJSDebugService::instance() +{ + return serviceInstance(); +} + +void QJSDebugService::addEngine(QDeclarativeEngine *engine) +{ + Q_ASSERT(engine); + Q_ASSERT(!m_engines.contains(engine)); + + m_engines.append(engine); + + if (status() == Enabled && !m_engines.isEmpty() && !m_agent) { + m_agent = new QJSDebuggerAgent(engine, engine); + connect(m_agent, SIGNAL(stopped(bool,QString)), + this, SLOT(executionStopped(bool,QString))); + + while (!m_agent->isInitialized()) { + waitForMessage(); + } + } +} + +void QJSDebugService::removeEngine(QDeclarativeEngine *engine) +{ + Q_ASSERT(engine); + Q_ASSERT(m_engines.contains(engine)); + + m_engines.removeAll(engine); +} + +void QJSDebugService::statusChanged(Status status) +{ + if (status == Enabled && !m_engines.isEmpty() && !m_agent) { + // Multiple engines are currently unsupported + QDeclarativeEngine *engine = m_engines.first(); + m_agent = new QJSDebuggerAgent(engine, engine); + + connect(m_agent, SIGNAL(stopped(bool,QString)), + this, SLOT(executionStopped(bool,QString))); + + } else if (status != Enabled && m_agent) { + delete m_agent; + m_agent = 0; + } +} + +void QJSDebugService::messageReceived(const QByteArray &message) +{ + if (!m_agent) { + qWarning() << "QJSDebugService::messageReceived: No QJSDebuggerAgent available"; + return; + } + + QDataStream ds(message); + QByteArray command; + ds >> command; + if (command == "BREAKPOINTS") { + JSAgentBreakpoints breakpoints; + ds >> breakpoints; + m_agent->setBreakpoints(breakpoints); + + //qDebug() << "BREAKPOINTS"; + //foreach (const JSAgentBreakpointData &bp, breakpoints) + // qDebug() << "BREAKPOINT: " << bp.fileUrl << bp.lineNumber; + } else if (command == "WATCH_EXPRESSIONS") { + QStringList watchExpressions; + ds >> watchExpressions; + m_agent->setWatchExpressions(watchExpressions); + } else if (command == "STEPOVER") { + m_agent->stepOver(); + } else if (command == "STEPINTO" || command == "INTERRUPT") { + m_agent->stepInto(); + } else if (command == "STEPOUT") { + m_agent->stepOut(); + } else if (command == "CONTINUE") { + m_agent->continueExecution(); + } else if (command == "EXEC") { + QByteArray id; + QString expr; + ds >> id >> expr; + + JSAgentWatchData data = m_agent->executeExpression(expr); + + QByteArray reply; + QDataStream rs(&reply, QIODevice::WriteOnly); + rs << QByteArray("RESULT") << id << data; + sendMessage(reply); + } else if (command == "EXPAND") { + QByteArray requestId; + quint64 objectId; + ds >> requestId >> objectId; + + QList<JSAgentWatchData> result = m_agent->expandObjectById(objectId); + + QByteArray reply; + QDataStream rs(&reply, QIODevice::WriteOnly); + rs << QByteArray("EXPANDED") << requestId << result; + sendMessage(reply); + } else if (command == "ACTIVATE_FRAME") { + int frameId; + ds >> frameId; + + QList<JSAgentWatchData> locals = m_agent->localsAtFrame(frameId); + + QByteArray reply; + QDataStream rs(&reply, QIODevice::WriteOnly); + rs << QByteArray("LOCALS") << frameId << locals; + sendMessage(reply); + } else if (command == "SET_PROPERTY") { + QByteArray id; + qint64 objectId; + QString property; + QString value; + ds >> id >> objectId >> property >> value; + + m_agent->setProperty(objectId, property, value); + + //TODO: feedback + } else if (command == "PING") { + int ping; + ds >> ping; + QByteArray reply; + QDataStream rs(&reply, QIODevice::WriteOnly); + rs << QByteArray("PONG") << ping; + sendMessage(reply); + } else if (command == "COVERAGE") { + bool enabled; + ds >> enabled; + m_agent->setCoverageEnabled(enabled); + if (!enabled) { + sendMessages(); + } + } else { + qDebug() << Q_FUNC_INFO << "Unknown command" << command; + } + + QDeclarativeDebugService::messageReceived(message); +} + +void QJSDebugService::executionStopped(bool becauseOfException, + const QString &exception) +{ + const QList<JSAgentStackData> backtrace = m_agent->backtrace(); + const QList<JSAgentWatchData> watches = m_agent->watches(); + const QList<JSAgentWatchData> locals = m_agent->locals(); + + QByteArray reply; + QDataStream rs(&reply, QIODevice::WriteOnly); + rs << QByteArray("STOPPED") << backtrace << watches << locals + << becauseOfException << exception; + sendMessage(reply); +} + +/* + Either send the message directly, or queue up + a list of messages to send later (via sendMessages) +*/ +void QJSDebugService::processMessage(const JSAgentCoverageData &message) +{ + if (m_deferredSend) + m_data.append(message); + else + sendMessage(message.toByteArray()); +} + +/* + Send the messages queued up by processMessage +*/ +void QJSDebugService::sendMessages() +{ + if (m_deferredSend) { + //### this is a suboptimal way to send batched messages + for (int i = 0; i < m_data.count(); ++i) + sendMessage(m_data.at(i).toByteArray()); + m_data.clear(); + + //indicate completion + QByteArray data; + QDataStream ds(&data, QIODevice::WriteOnly); + ds << QByteArray("COVERAGE") << (qint64)-1 << (int)CoverageComplete; + sendMessage(data); + } +} + |