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/****************************************************************************
**
** Copyright (C) 2011 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 "qv8debugservice_p.h"
#include "qdeclarativedebugservice_p_p.h"
#include "qv8debug_p.h"
#include "qv8engine_p.h"
#include "qdeclarativeengine_p.h"
#include <QtCore/QEventLoop>
#include <QtCore/QHash>
#include <QtCore/QFileInfo>
QT_BEGIN_NAMESPACE
Q_GLOBAL_STATIC(QV8DebugService, v8ServiceInstance)
void DebugMessageHandler(const v8::Debug::Message& message)
{
v8::DebugEvent event = message.GetEvent();
if (event != v8::Break && event != v8::Exception && event != v8::AfterCompile) {
return;
}
QByteArray response(QV8Engine::toStringStatic(message.GetJSON()).toUtf8());
QV8DebugService *service = QV8DebugService::instance();
service->debugMessageHandler(response);
if (event == v8::Break && !message.WillStartRunning()) {
service->executionStopped();
} else if (event == v8::AfterCompile) {
service->appendSourcePath(response);
} //TODO::v8::Exception
}
class QV8DebugServicePrivate : public QDeclarativeDebugServicePrivate
{
public:
QJSEngine engine;
QList<QDeclarativeEngine *> engines;
QEventLoop loop;
QHash<QString,QString> sourcePath;
QHash<QString,QByteArray> requestCache;
};
QV8DebugService::QV8DebugService(QObject *parent)
: QDeclarativeDebugService(*(new QV8DebugServicePrivate()), QLatin1String("V8Debugger"), parent)
{
v8::Debug::SetMessageHandler2(DebugMessageHandler);
}
QV8DebugService::~QV8DebugService()
{
}
QV8DebugService *QV8DebugService::instance()
{
return v8ServiceInstance();
}
void QV8DebugService::addEngine(QDeclarativeEngine *engine)
{
Q_D(QV8DebugService);
Q_ASSERT(engine);
Q_ASSERT(!d->engines.contains(engine));
d->engines.append(engine);
}
void QV8DebugService::removeEngine(QDeclarativeEngine *engine)
{
Q_D(QV8DebugService);
Q_ASSERT(engine);
Q_ASSERT(d->engines.contains(engine));
d->engines.removeAll(engine);
}
void QV8DebugService::debugMessageHandler(QByteArray message)
{
sendMessage(packMessage(message));
}
void QV8DebugService::executionStopped()
{
Q_D(QV8DebugService);
d->loop.exec(QEventLoop::ExcludeUserInputEvents);
}
void QV8DebugService::appendSourcePath(QByteArray message)
{
Q_D(QV8DebugService);
QVariantMap msgMap;
{
QString msg(message);
QJSValue parser = d->engine.evaluate("JSON.parse");
QJSValue out = parser.call(QJSValue(), QJSValueList() << QJSValue(msg));
msgMap = out.toVariant().toMap();
}
QString sourcePath(msgMap.value("body").toMap().value("script").toMap().value("name").toString());
QString fileName(QFileInfo(sourcePath).fileName());
d->sourcePath.insert(fileName, sourcePath);
//Check if there are any pending breakpoint requests for this file
if (d->requestCache.contains(fileName)) {
QList<QByteArray> list = d->requestCache.values(fileName);
d->requestCache.remove(fileName);
foreach (QByteArray request, list) {
request.replace(fileName.toUtf8(), sourcePath.toUtf8());
sendDebugMessage(request);
}
}
}
void QV8DebugService::messageReceived(const QByteArray &message)
{
Q_D(QV8DebugService);
QDataStream ds(message);
QByteArray command;
ds >> command;
if (command == "V8DEBUG") {
QByteArray request;
ds >> request;
QVariantMap reqMap;
{
QString req(request);
QJSValue parser = d->engine.evaluate("JSON.parse");
QJSValue out = parser.call(QJSValue(), QJSValueList() << QJSValue(req));
reqMap = out.toVariant().toMap();
}
QString debugCommand(reqMap.value("command").toString());
if (debugCommand == QString("interrupt")) {
v8::Debug::DebugBreak();
} else {
bool ok = true;
if (debugCommand == QString("setbreakpoint")){
QVariantMap arguments = reqMap.value("arguments").toMap();
QString type(arguments.value("type").toString());
if (type == QString("script")) {
QString fileName(arguments.value("target").toString());
//Check if the filepath has been cached
if (d->sourcePath.contains(fileName)) {
QString filePath = d->sourcePath.value(fileName);
request.replace(fileName.toUtf8(), filePath.toUtf8());
} else {
//Store the setbreakpoint message till filepath is resolved
d->requestCache.insertMulti(fileName, request);
ok = false;
}
}
}
if (ok)
sendDebugMessage(request);
}
}
QDeclarativeDebugService::messageReceived(message);
}
void QV8DebugService::sendDebugMessage(const QByteArray &msg)
{
Q_D(QV8DebugService);
QString message(msg);
if (d->loop.isRunning()) {
d->loop.exit();
}
v8::Debug::SendCommand(message.utf16(), message.size());
}
QByteArray QV8DebugService::packMessage(QByteArray &message)
{
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
QByteArray cmd = "V8DEBUG";
rs << cmd << message;
return reply;
}
QT_END_NAMESPACE
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