Windows-4.7.4/src/scripttools/debugging/qscriptdebuggercommandexecutor.cpp - platform/external/qt - Git at Google

 /****************************************************************************
 **
 ** 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 QtSCriptTools 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 "qscriptdebuggercommandexecutor_p.h"

 #include "qscriptdebuggerbackend_p.h"
 #include "qscriptdebuggercommand_p.h"
 #include "qscriptdebuggerresponse_p.h"
 #include "qscriptdebuggervalue_p.h"
 #include "qscriptdebuggervalueproperty_p.h"
 #include "qscriptbreakpointdata_p.h"
 #include "qscriptobjectsnapshot_p.h"
 #include "qscriptdebuggerobjectsnapshotdelta_p.h"

 #include <QtCore/qstringlist.h>
 #include <QtScript/qscriptengine.h>
 #include <QtScript/qscriptcontextinfo.h>
 #include <QtScript/qscriptvalueiterator.h>
 #include <QtCore/qdebug.h>

 Q_DECLARE_METATYPE(QScriptScriptsDelta)
 Q_DECLARE_METATYPE(QScriptDebuggerValueProperty)
 Q_DECLARE_METATYPE(QScriptDebuggerValuePropertyList)
 Q_DECLARE_METATYPE(QScriptDebuggerObjectSnapshotDelta)

 QT_BEGIN_NAMESPACE

 /*!
   \since 4.5
   \class QScriptDebuggerCommandExecutor
   \internal

   \brief The QScriptDebuggerCommandExecutor applies debugger commands to a back-end.

   The execute() function takes a command (typically produced by a
   QScriptDebuggerFrontend) and applies it to a QScriptDebuggerBackend.

   \sa QScriptDebuggerCommmand
 */

 class QScriptDebuggerCommandExecutorPrivate
 {
 public:
     QScriptDebuggerCommandExecutorPrivate();
     ~QScriptDebuggerCommandExecutorPrivate();
 };

 QScriptDebuggerCommandExecutorPrivate::QScriptDebuggerCommandExecutorPrivate()
 {
 }

 QScriptDebuggerCommandExecutorPrivate::~QScriptDebuggerCommandExecutorPrivate()
 {
 }

 QScriptDebuggerCommandExecutor::QScriptDebuggerCommandExecutor()
     : d_ptr(new QScriptDebuggerCommandExecutorPrivate())
 {
 }

 QScriptDebuggerCommandExecutor::~QScriptDebuggerCommandExecutor()
 {
 }

 static bool isPrefixOf(const QString &prefix, const QString &what)
 {
     return ((what.length() > prefix.length())
             && what.startsWith(prefix));
 }

 /*!
   Applies the given \a command to the given \a backend.
 */
 QScriptDebuggerResponse QScriptDebuggerCommandExecutor::execute(
     QScriptDebuggerBackend *backend,
     const QScriptDebuggerCommand &command)
 {
     QScriptDebuggerResponse response;
     switch (command.type()) {
     case QScriptDebuggerCommand::None:
         break;

     case QScriptDebuggerCommand::Interrupt:
         backend->interruptEvaluation();
         break;

     case QScriptDebuggerCommand::Continue:
         if (backend->engine()->isEvaluating()) {
             backend->continueEvalution();
             response.setAsync(true);
         }
         break;

     case QScriptDebuggerCommand::StepInto: {
         QVariant attr = command.attribute(QScriptDebuggerCommand::StepCount);
         int count = attr.isValid() ? attr.toInt() : 1;
         backend->stepInto(count);
         response.setAsync(true);
     }   break;

     case QScriptDebuggerCommand::StepOver: {
         QVariant attr = command.attribute(QScriptDebuggerCommand::StepCount);
         int count = attr.isValid() ? attr.toInt() : 1;
         backend->stepOver(count);
         response.setAsync(true);
     }   break;

     case QScriptDebuggerCommand::StepOut:
         backend->stepOut();
         response.setAsync(true);
         break;

     case QScriptDebuggerCommand::RunToLocation:
         backend->runToLocation(command.fileName(), command.lineNumber());
         response.setAsync(true);
         break;

     case QScriptDebuggerCommand::RunToLocationByID:
         backend->runToLocation(command.scriptId(), command.lineNumber());
         response.setAsync(true);
         break;

     case QScriptDebuggerCommand::ForceReturn: {
         int contextIndex = command.contextIndex();
         QScriptDebuggerValue value = command.scriptValue();
         QScriptEngine *engine = backend->engine();
         QScriptValue realValue = value.toScriptValue(engine);
         backend->returnToCaller(contextIndex, realValue);
         response.setAsync(true);
     }   break;

     case QScriptDebuggerCommand::Resume:
         backend->resume();
         response.setAsync(true);
         break;

     case QScriptDebuggerCommand::SetBreakpoint: {
         QScriptBreakpointData data = command.breakpointData();
         if (!data.isValid())
             data = QScriptBreakpointData(command.fileName(), command.lineNumber());
         int id = backend->setBreakpoint(data);
         response.setResult(id);
     }   break;

     case QScriptDebuggerCommand::DeleteBreakpoint: {
         int id = command.breakpointId();
         if (!backend->deleteBreakpoint(id))
             response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
     }   break;

     case QScriptDebuggerCommand::DeleteAllBreakpoints:
         backend->deleteAllBreakpoints();
         break;

     case QScriptDebuggerCommand::GetBreakpoints: {
         QScriptBreakpointMap bps = backend->breakpoints();
         if (!bps.isEmpty())
             response.setResult(bps);
     }   break;

     case QScriptDebuggerCommand::GetBreakpointData: {
         int id = command.breakpointId();
         QScriptBreakpointData data = backend->breakpointData(id);
         if (data.isValid())
             response.setResult(data);
         else
             response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
     }   break;

     case QScriptDebuggerCommand::SetBreakpointData: {
         int id = command.breakpointId();
         QScriptBreakpointData data = command.breakpointData();
         if (!backend->setBreakpointData(id, data))
             response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
     }   break;

     case QScriptDebuggerCommand::GetScripts: {
         QScriptScriptMap scripts = backend->scripts();
         if (!scripts.isEmpty())
             response.setResult(scripts);
     }   break;

     case QScriptDebuggerCommand::GetScriptData: {
         qint64 id = command.scriptId();
         QScriptScriptData data = backend->scriptData(id);
         if (data.isValid())
             response.setResult(data);
         else
             response.setError(QScriptDebuggerResponse::InvalidScriptID);
     }   break;

     case QScriptDebuggerCommand::ScriptsCheckpoint:
         backend->scriptsCheckpoint();
         response.setResult(qVariantFromValue(backend->scriptsDelta()));
         break;

     case QScriptDebuggerCommand::GetScriptsDelta:
         response.setResult(qVariantFromValue(backend->scriptsDelta()));
         break;

     case QScriptDebuggerCommand::ResolveScript:
         response.setResult(backend->resolveScript(command.fileName()));
         break;

     case QScriptDebuggerCommand::GetBacktrace:
         response.setResult(backend->backtrace());
         break;

     case QScriptDebuggerCommand::GetContextCount:
         response.setResult(backend->contextCount());
         break;

     case QScriptDebuggerCommand::GetContextState: {
         QScriptContext *ctx = backend->context(command.contextIndex());
         if (ctx)
             response.setResult(static_cast<int>(ctx->state()));
         else
             response.setError(QScriptDebuggerResponse::InvalidContextIndex);
     }   break;

     case QScriptDebuggerCommand::GetContextID: {
         int idx = command.contextIndex();
         if ((idx >= 0) && (idx < backend->contextCount()))
             response.setResult(backend->contextIds()[idx]);
         else
             response.setError(QScriptDebuggerResponse::InvalidContextIndex);
     }   break;

     case QScriptDebuggerCommand::GetContextInfo: {
         QScriptContext *ctx = backend->context(command.contextIndex());
         if (ctx)
             response.setResult(QScriptContextInfo(ctx));
         else
             response.setError(QScriptDebuggerResponse::InvalidContextIndex);
     }   break;

     case QScriptDebuggerCommand::GetThisObject: {
         QScriptContext *ctx = backend->context(command.contextIndex());
         if (ctx)
             response.setResult(ctx->thisObject());
         else
             response.setError(QScriptDebuggerResponse::InvalidContextIndex);
     }   break;

     case QScriptDebuggerCommand::GetActivationObject: {
         QScriptContext *ctx = backend->context(command.contextIndex());
         if (ctx)
             response.setResult(ctx->activationObject());
         else
             response.setError(QScriptDebuggerResponse::InvalidContextIndex);
     }   break;

     case QScriptDebuggerCommand::GetScopeChain: {
         QScriptContext *ctx = backend->context(command.contextIndex());
         if (ctx) {
             QScriptDebuggerValueList dest;
             QScriptValueList src = ctx->scopeChain();
             for (int i = 0; i < src.size(); ++i)
                 dest.append(src.at(i));
             response.setResult(dest);
         } else {
             response.setError(QScriptDebuggerResponse::InvalidContextIndex);
         }
     }   break;

     case QScriptDebuggerCommand::ContextsCheckpoint: {
         response.setResult(qVariantFromValue(backend->contextsCheckpoint()));
     }   break;

     case QScriptDebuggerCommand::GetPropertyExpressionValue: {
         QScriptContext *ctx = backend->context(command.contextIndex());
         int lineNumber = command.lineNumber();
         QVariant attr = command.attribute(QScriptDebuggerCommand::UserAttribute);
         QStringList path = attr.toStringList();
         if (!ctx || path.isEmpty())
             break;
         QScriptContextInfo ctxInfo(ctx);
         if (ctx->callee().isValid()
             && ((lineNumber < ctxInfo.functionStartLineNumber())
                 || (lineNumber > ctxInfo.functionEndLineNumber()))) {
             break;
         }
         QScriptValueList objects;
         int pathIndex = 0;
         if (path.at(0) == QLatin1String("this")) {
             objects.append(ctx->thisObject());
             ++pathIndex;
         } else {
             objects << ctx->scopeChain();
         }
         for (int i = 0; i < objects.size(); ++i) {
             QScriptValue val = objects.at(i);
             for (int j = pathIndex; val.isValid() && (j < path.size()); ++j) {
                 val = val.property(path.at(j));
             }
             if (val.isValid()) {
                 bool hadException = (ctx->state() == QScriptContext::ExceptionState);
                 QString str = val.toString();
                 if (!hadException && backend->engine()->hasUncaughtException())
                     backend->engine()->clearExceptions();
                 response.setResult(str);
                 break;
             }
         }
     }   break;

     case QScriptDebuggerCommand::GetCompletions: {
         QScriptContext *ctx = backend->context(command.contextIndex());
         QVariant attr = command.attribute(QScriptDebuggerCommand::UserAttribute);
         QStringList path = attr.toStringList();
         if (!ctx || path.isEmpty())
             break;
         QScriptValueList objects;
         QString prefix = path.last();
         QSet<QString> matches;
         if (path.size() > 1) {
             const QString &topLevelIdent = path.at(0);
             QScriptValue obj;
             if (topLevelIdent == QLatin1String("this")) {
                 obj = ctx->thisObject();
             } else {
                 QScriptValueList scopeChain;
                 scopeChain = ctx->scopeChain();
                 for (int i = 0; i < scopeChain.size(); ++i) {
                     QScriptValue oo = scopeChain.at(i).property(topLevelIdent);
                     if (oo.isObject()) {
                         obj = oo;
                         break;
                     }
                 }
             }
             for (int i = 1; obj.isObject() && (i < path.size()-1); ++i)
                 obj = obj.property(path.at(i));
             if (obj.isValid())
                 objects.append(obj);
         } else {
             objects << ctx->scopeChain();
             QStringList keywords;
             keywords.append(QString::fromLatin1("this"));
             keywords.append(QString::fromLatin1("true"));
             keywords.append(QString::fromLatin1("false"));
             keywords.append(QString::fromLatin1("null"));
             for (int i = 0; i < keywords.size(); ++i) {
                 const QString &kwd = keywords.at(i);
                 if (isPrefixOf(prefix, kwd))
                     matches.insert(kwd);
             }
         }

         for (int i = 0; i < objects.size(); ++i) {
             QScriptValue obj = objects.at(i);
             while (obj.isObject()) {
                 QScriptValueIterator it(obj);
                 while (it.hasNext()) {
                     it.next();
                     QString propertyName = it.name();
                     if (isPrefixOf(prefix, propertyName))
                         matches.insert(propertyName);
                 }
                 obj = obj.prototype();
             }
         }
         QStringList matchesList = matches.toList();
         qStableSort(matchesList);
         response.setResult(matchesList);
     }   break;

     case QScriptDebuggerCommand::NewScriptObjectSnapshot: {
         int id = backend->newScriptObjectSnapshot();
         response.setResult(id);
     }   break;

     case QScriptDebuggerCommand::ScriptObjectSnapshotCapture: {
         int id = command.snapshotId();
         QScriptObjectSnapshot *snap = backend->scriptObjectSnapshot(id);
         Q_ASSERT(snap != 0);
         QScriptDebuggerValue object = command.scriptValue();
         Q_ASSERT(object.type() == QScriptDebuggerValue::ObjectValue);
         QScriptEngine *engine = backend->engine();
         QScriptValue realObject = object.toScriptValue(engine);
         Q_ASSERT(realObject.isObject());
         QScriptObjectSnapshot::Delta delta = snap->capture(realObject);
         QScriptDebuggerObjectSnapshotDelta result;
         result.removedProperties = delta.removedProperties;
         bool didIgnoreExceptions = backend->ignoreExceptions();
         backend->setIgnoreExceptions(true);
         for (int i = 0; i < delta.changedProperties.size(); ++i) {
             const QScriptValueProperty &src = delta.changedProperties.at(i);
             bool hadException = engine->hasUncaughtException();
             QString str = src.value().toString();
             if (!hadException && engine->hasUncaughtException())
                 engine->clearExceptions();
             QScriptDebuggerValueProperty dest(src.name(), src.value(), str, src.flags());
             result.changedProperties.append(dest);
         }
         for (int j = 0; j < delta.addedProperties.size(); ++j) {
             const QScriptValueProperty &src = delta.addedProperties.at(j);
             bool hadException = engine->hasUncaughtException();
             QString str = src.value().toString();
             if (!hadException && engine->hasUncaughtException())
                 engine->clearExceptions();
             QScriptDebuggerValueProperty dest(src.name(), src.value(), str, src.flags());
             result.addedProperties.append(dest);
         }
         backend->setIgnoreExceptions(didIgnoreExceptions);
         response.setResult(qVariantFromValue(result));
     }   break;

     case QScriptDebuggerCommand::DeleteScriptObjectSnapshot: {
         int id = command.snapshotId();
         backend->deleteScriptObjectSnapshot(id);
     }   break;

     case QScriptDebuggerCommand::NewScriptValueIterator: {
         QScriptDebuggerValue object = command.scriptValue();
         Q_ASSERT(object.type() == QScriptDebuggerValue::ObjectValue);
         QScriptEngine *engine = backend->engine();
         QScriptValue realObject = object.toScriptValue(engine);
         Q_ASSERT(realObject.isObject());
         int id = backend->newScriptValueIterator(realObject);
         response.setResult(id);
     }   break;

     case QScriptDebuggerCommand::GetPropertiesByIterator: {
         int id = command.iteratorId();
         int count = 1000;
         QScriptValueIterator *it = backend->scriptValueIterator(id);
         Q_ASSERT(it != 0);
         QScriptDebuggerValuePropertyList props;
         for (int i = 0; (i < count) && it->hasNext(); ++i) {
             it->next();
             QString name = it->name();
             QScriptValue value = it->value();
             QString valueAsString = value.toString();
             QScriptValue::PropertyFlags flags = it->flags();
             QScriptDebuggerValueProperty prp(name, value, valueAsString, flags);
             props.append(prp);
         }
         response.setResult(props);
     }   break;

     case QScriptDebuggerCommand::DeleteScriptValueIterator: {
         int id = command.iteratorId();
         backend->deleteScriptValueIterator(id);
     }   break;

     case QScriptDebuggerCommand::Evaluate: {
         int contextIndex = command.contextIndex();
         QString program = command.program();
         QString fileName = command.fileName();
         int lineNumber = command.lineNumber();
         backend->evaluate(contextIndex, program, fileName, lineNumber);
         response.setAsync(true);
     }   break;

     case QScriptDebuggerCommand::ScriptValueToString: {
         QScriptDebuggerValue value = command.scriptValue();
         QScriptEngine *engine = backend->engine();
         QScriptValue realValue = value.toScriptValue(engine);
         response.setResult(realValue.toString());
     }   break;

     case QScriptDebuggerCommand::SetScriptValueProperty: {
         QScriptDebuggerValue object = command.scriptValue();
         QScriptEngine *engine = backend->engine();
         QScriptValue realObject = object.toScriptValue(engine);
         QScriptDebuggerValue value = command.subordinateScriptValue();
         QScriptValue realValue = value.toScriptValue(engine);
         QString name = command.name();
         realObject.setProperty(name, realValue);
     }   break;

     case QScriptDebuggerCommand::ClearExceptions:
         backend->engine()->clearExceptions();
         break;

     case QScriptDebuggerCommand::UserCommand:
     case QScriptDebuggerCommand::MaxUserCommand:
         break;
     }
     return response;
 }

 QT_END_NAMESPACE
	/****************************************************************************
	**
	** 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 QtSCriptTools 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 "qscriptdebuggercommandexecutor_p.h"

	#include "qscriptdebuggerbackend_p.h"
	#include "qscriptdebuggercommand_p.h"
	#include "qscriptdebuggerresponse_p.h"
	#include "qscriptdebuggervalue_p.h"
	#include "qscriptdebuggervalueproperty_p.h"
	#include "qscriptbreakpointdata_p.h"
	#include "qscriptobjectsnapshot_p.h"
	#include "qscriptdebuggerobjectsnapshotdelta_p.h"

	#include <QtCore/qstringlist.h>
	#include <QtScript/qscriptengine.h>
	#include <QtScript/qscriptcontextinfo.h>
	#include <QtScript/qscriptvalueiterator.h>
	#include <QtCore/qdebug.h>

	Q_DECLARE_METATYPE(QScriptScriptsDelta)
	Q_DECLARE_METATYPE(QScriptDebuggerValueProperty)
	Q_DECLARE_METATYPE(QScriptDebuggerValuePropertyList)
	Q_DECLARE_METATYPE(QScriptDebuggerObjectSnapshotDelta)

	QT_BEGIN_NAMESPACE

	/*!
	\since 4.5
	\class QScriptDebuggerCommandExecutor
	\internal

	\brief The QScriptDebuggerCommandExecutor applies debugger commands to a back-end.

	The execute() function takes a command (typically produced by a
	QScriptDebuggerFrontend) and applies it to a QScriptDebuggerBackend.

	\sa QScriptDebuggerCommmand
	*/

	class QScriptDebuggerCommandExecutorPrivate
	{
	public:
	QScriptDebuggerCommandExecutorPrivate();
	~QScriptDebuggerCommandExecutorPrivate();
	};

	QScriptDebuggerCommandExecutorPrivate::QScriptDebuggerCommandExecutorPrivate()
	{
	}

	QScriptDebuggerCommandExecutorPrivate::~QScriptDebuggerCommandExecutorPrivate()
	{
	}

	QScriptDebuggerCommandExecutor::QScriptDebuggerCommandExecutor()
	: d_ptr(new QScriptDebuggerCommandExecutorPrivate())
	{
	}

	QScriptDebuggerCommandExecutor::~QScriptDebuggerCommandExecutor()
	{
	}

	static bool isPrefixOf(const QString &prefix, const QString &what)
	{
	return ((what.length() > prefix.length())
	&& what.startsWith(prefix));
	}

	/*!
	Applies the given \a command to the given \a backend.
	*/
	QScriptDebuggerResponse QScriptDebuggerCommandExecutor::execute(
	QScriptDebuggerBackend *backend,
	const QScriptDebuggerCommand &command)
	{
	QScriptDebuggerResponse response;
	switch (command.type()) {
	case QScriptDebuggerCommand::None:
	break;

	case QScriptDebuggerCommand::Interrupt:
	backend->interruptEvaluation();
	break;

	case QScriptDebuggerCommand::Continue:
	if (backend->engine()->isEvaluating()) {
	backend->continueEvalution();
	response.setAsync(true);
	}
	break;

	case QScriptDebuggerCommand::StepInto: {
	QVariant attr = command.attribute(QScriptDebuggerCommand::StepCount);
	int count = attr.isValid() ? attr.toInt() : 1;
	backend->stepInto(count);
	response.setAsync(true);
	} break;

	case QScriptDebuggerCommand::StepOver: {
	QVariant attr = command.attribute(QScriptDebuggerCommand::StepCount);
	int count = attr.isValid() ? attr.toInt() : 1;
	backend->stepOver(count);
	response.setAsync(true);
	} break;

	case QScriptDebuggerCommand::StepOut:
	backend->stepOut();
	response.setAsync(true);
	break;

	case QScriptDebuggerCommand::RunToLocation:
	backend->runToLocation(command.fileName(), command.lineNumber());
	response.setAsync(true);
	break;

	case QScriptDebuggerCommand::RunToLocationByID:
	backend->runToLocation(command.scriptId(), command.lineNumber());
	response.setAsync(true);
	break;

	case QScriptDebuggerCommand::ForceReturn: {
	int contextIndex = command.contextIndex();
	QScriptDebuggerValue value = command.scriptValue();
	QScriptEngine *engine = backend->engine();
	QScriptValue realValue = value.toScriptValue(engine);
	backend->returnToCaller(contextIndex, realValue);
	response.setAsync(true);
	} break;

	case QScriptDebuggerCommand::Resume:
	backend->resume();
	response.setAsync(true);
	break;

	case QScriptDebuggerCommand::SetBreakpoint: {
	QScriptBreakpointData data = command.breakpointData();
	if (!data.isValid())
	data = QScriptBreakpointData(command.fileName(), command.lineNumber());
	int id = backend->setBreakpoint(data);
	response.setResult(id);
	} break;

	case QScriptDebuggerCommand::DeleteBreakpoint: {
	int id = command.breakpointId();
	if (!backend->deleteBreakpoint(id))
	response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
	} break;

	case QScriptDebuggerCommand::DeleteAllBreakpoints:
	backend->deleteAllBreakpoints();
	break;

	case QScriptDebuggerCommand::GetBreakpoints: {
	QScriptBreakpointMap bps = backend->breakpoints();
	if (!bps.isEmpty())
	response.setResult(bps);
	} break;

	case QScriptDebuggerCommand::GetBreakpointData: {
	int id = command.breakpointId();
	QScriptBreakpointData data = backend->breakpointData(id);
	if (data.isValid())
	response.setResult(data);
	else
	response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
	} break;

	case QScriptDebuggerCommand::SetBreakpointData: {
	int id = command.breakpointId();
	QScriptBreakpointData data = command.breakpointData();
	if (!backend->setBreakpointData(id, data))
	response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
	} break;

	case QScriptDebuggerCommand::GetScripts: {
	QScriptScriptMap scripts = backend->scripts();
	if (!scripts.isEmpty())
	response.setResult(scripts);
	} break;

	case QScriptDebuggerCommand::GetScriptData: {
	qint64 id = command.scriptId();
	QScriptScriptData data = backend->scriptData(id);
	if (data.isValid())
	response.setResult(data);
	else
	response.setError(QScriptDebuggerResponse::InvalidScriptID);
	} break;

	case QScriptDebuggerCommand::ScriptsCheckpoint:
	backend->scriptsCheckpoint();
	response.setResult(qVariantFromValue(backend->scriptsDelta()));
	break;

	case QScriptDebuggerCommand::GetScriptsDelta:
	response.setResult(qVariantFromValue(backend->scriptsDelta()));
	break;

	case QScriptDebuggerCommand::ResolveScript:
	response.setResult(backend->resolveScript(command.fileName()));
	break;

	case QScriptDebuggerCommand::GetBacktrace:
	response.setResult(backend->backtrace());
	break;

	case QScriptDebuggerCommand::GetContextCount:
	response.setResult(backend->contextCount());
	break;

	case QScriptDebuggerCommand::GetContextState: {
	QScriptContext *ctx = backend->context(command.contextIndex());
	if (ctx)
	response.setResult(static_cast<int>(ctx->state()));
	else
	response.setError(QScriptDebuggerResponse::InvalidContextIndex);
	} break;

	case QScriptDebuggerCommand::GetContextID: {
	int idx = command.contextIndex();
	if ((idx >= 0) && (idx < backend->contextCount()))
	response.setResult(backend->contextIds()[idx]);
	else
	response.setError(QScriptDebuggerResponse::InvalidContextIndex);
	} break;

	case QScriptDebuggerCommand::GetContextInfo: {
	QScriptContext *ctx = backend->context(command.contextIndex());
	if (ctx)
	response.setResult(QScriptContextInfo(ctx));
	else
	response.setError(QScriptDebuggerResponse::InvalidContextIndex);
	} break;

	case QScriptDebuggerCommand::GetThisObject: {
	QScriptContext *ctx = backend->context(command.contextIndex());
	if (ctx)
	response.setResult(ctx->thisObject());
	else
	response.setError(QScriptDebuggerResponse::InvalidContextIndex);
	} break;

	case QScriptDebuggerCommand::GetActivationObject: {
	QScriptContext *ctx = backend->context(command.contextIndex());
	if (ctx)
	response.setResult(ctx->activationObject());
	else
	response.setError(QScriptDebuggerResponse::InvalidContextIndex);
	} break;

	case QScriptDebuggerCommand::GetScopeChain: {
	QScriptContext *ctx = backend->context(command.contextIndex());
	if (ctx) {
	QScriptDebuggerValueList dest;
	QScriptValueList src = ctx->scopeChain();
	for (int i = 0; i < src.size(); ++i)
	dest.append(src.at(i));
	response.setResult(dest);
	} else {
	response.setError(QScriptDebuggerResponse::InvalidContextIndex);
	}
	} break;

	case QScriptDebuggerCommand::ContextsCheckpoint: {
	response.setResult(qVariantFromValue(backend->contextsCheckpoint()));
	} break;

	case QScriptDebuggerCommand::GetPropertyExpressionValue: {
	QScriptContext *ctx = backend->context(command.contextIndex());
	int lineNumber = command.lineNumber();
	QVariant attr = command.attribute(QScriptDebuggerCommand::UserAttribute);
	QStringList path = attr.toStringList();
	if (!ctx \|\| path.isEmpty())
	break;
	QScriptContextInfo ctxInfo(ctx);
	if (ctx->callee().isValid()
	&& ((lineNumber < ctxInfo.functionStartLineNumber())
	\|\| (lineNumber > ctxInfo.functionEndLineNumber()))) {
	break;
	}
	QScriptValueList objects;
	int pathIndex = 0;
	if (path.at(0) == QLatin1String("this")) {
	objects.append(ctx->thisObject());
	++pathIndex;
	} else {
	objects << ctx->scopeChain();
	}
	for (int i = 0; i < objects.size(); ++i) {
	QScriptValue val = objects.at(i);
	for (int j = pathIndex; val.isValid() && (j < path.size()); ++j) {
	val = val.property(path.at(j));
	}
	if (val.isValid()) {
	bool hadException = (ctx->state() == QScriptContext::ExceptionState);
	QString str = val.toString();
	if (!hadException && backend->engine()->hasUncaughtException())
	backend->engine()->clearExceptions();
	response.setResult(str);
	break;
	}
	}
	} break;

	case QScriptDebuggerCommand::GetCompletions: {
	QScriptContext *ctx = backend->context(command.contextIndex());
	QVariant attr = command.attribute(QScriptDebuggerCommand::UserAttribute);
	QStringList path = attr.toStringList();
	if (!ctx \|\| path.isEmpty())
	break;
	QScriptValueList objects;
	QString prefix = path.last();
	QSet<QString> matches;
	if (path.size() > 1) {
	const QString &topLevelIdent = path.at(0);
	QScriptValue obj;
	if (topLevelIdent == QLatin1String("this")) {
	obj = ctx->thisObject();
	} else {
	QScriptValueList scopeChain;
	scopeChain = ctx->scopeChain();
	for (int i = 0; i < scopeChain.size(); ++i) {
	QScriptValue oo = scopeChain.at(i).property(topLevelIdent);
	if (oo.isObject()) {
	obj = oo;
	break;
	}
	}
	}
	for (int i = 1; obj.isObject() && (i < path.size()-1); ++i)
	obj = obj.property(path.at(i));
	if (obj.isValid())
	objects.append(obj);
	} else {
	objects << ctx->scopeChain();
	QStringList keywords;
	keywords.append(QString::fromLatin1("this"));
	keywords.append(QString::fromLatin1("true"));
	keywords.append(QString::fromLatin1("false"));
	keywords.append(QString::fromLatin1("null"));
	for (int i = 0; i < keywords.size(); ++i) {
	const QString &kwd = keywords.at(i);
	if (isPrefixOf(prefix, kwd))
	matches.insert(kwd);
	}
	}

	for (int i = 0; i < objects.size(); ++i) {
	QScriptValue obj = objects.at(i);
	while (obj.isObject()) {
	QScriptValueIterator it(obj);
	while (it.hasNext()) {
	it.next();
	QString propertyName = it.name();
	if (isPrefixOf(prefix, propertyName))
	matches.insert(propertyName);
	}
	obj = obj.prototype();
	}
	}
	QStringList matchesList = matches.toList();
	qStableSort(matchesList);
	response.setResult(matchesList);
	} break;

	case QScriptDebuggerCommand::NewScriptObjectSnapshot: {
	int id = backend->newScriptObjectSnapshot();
	response.setResult(id);
	} break;

	case QScriptDebuggerCommand::ScriptObjectSnapshotCapture: {
	int id = command.snapshotId();
	QScriptObjectSnapshot *snap = backend->scriptObjectSnapshot(id);
	Q_ASSERT(snap != 0);
	QScriptDebuggerValue object = command.scriptValue();
	Q_ASSERT(object.type() == QScriptDebuggerValue::ObjectValue);
	QScriptEngine *engine = backend->engine();
	QScriptValue realObject = object.toScriptValue(engine);
	Q_ASSERT(realObject.isObject());
	QScriptObjectSnapshot::Delta delta = snap->capture(realObject);
	QScriptDebuggerObjectSnapshotDelta result;
	result.removedProperties = delta.removedProperties;
	bool didIgnoreExceptions = backend->ignoreExceptions();
	backend->setIgnoreExceptions(true);
	for (int i = 0; i < delta.changedProperties.size(); ++i) {
	const QScriptValueProperty &src = delta.changedProperties.at(i);
	bool hadException = engine->hasUncaughtException();
	QString str = src.value().toString();
	if (!hadException && engine->hasUncaughtException())
	engine->clearExceptions();
	QScriptDebuggerValueProperty dest(src.name(), src.value(), str, src.flags());
	result.changedProperties.append(dest);
	}
	for (int j = 0; j < delta.addedProperties.size(); ++j) {
	const QScriptValueProperty &src = delta.addedProperties.at(j);
	bool hadException = engine->hasUncaughtException();
	QString str = src.value().toString();
	if (!hadException && engine->hasUncaughtException())
	engine->clearExceptions();
	QScriptDebuggerValueProperty dest(src.name(), src.value(), str, src.flags());
	result.addedProperties.append(dest);
	}
	backend->setIgnoreExceptions(didIgnoreExceptions);
	response.setResult(qVariantFromValue(result));
	} break;

	case QScriptDebuggerCommand::DeleteScriptObjectSnapshot: {
	int id = command.snapshotId();
	backend->deleteScriptObjectSnapshot(id);
	} break;

	case QScriptDebuggerCommand::NewScriptValueIterator: {
	QScriptDebuggerValue object = command.scriptValue();
	Q_ASSERT(object.type() == QScriptDebuggerValue::ObjectValue);
	QScriptEngine *engine = backend->engine();
	QScriptValue realObject = object.toScriptValue(engine);
	Q_ASSERT(realObject.isObject());
	int id = backend->newScriptValueIterator(realObject);
	response.setResult(id);
	} break;

	case QScriptDebuggerCommand::GetPropertiesByIterator: {
	int id = command.iteratorId();
	int count = 1000;
	QScriptValueIterator *it = backend->scriptValueIterator(id);
	Q_ASSERT(it != 0);
	QScriptDebuggerValuePropertyList props;
	for (int i = 0; (i < count) && it->hasNext(); ++i) {
	it->next();
	QString name = it->name();
	QScriptValue value = it->value();
	QString valueAsString = value.toString();
	QScriptValue::PropertyFlags flags = it->flags();
	QScriptDebuggerValueProperty prp(name, value, valueAsString, flags);
	props.append(prp);
	}
	response.setResult(props);
	} break;

	case QScriptDebuggerCommand::DeleteScriptValueIterator: {
	int id = command.iteratorId();
	backend->deleteScriptValueIterator(id);
	} break;

	case QScriptDebuggerCommand::Evaluate: {
	int contextIndex = command.contextIndex();
	QString program = command.program();
	QString fileName = command.fileName();
	int lineNumber = command.lineNumber();
	backend->evaluate(contextIndex, program, fileName, lineNumber);
	response.setAsync(true);
	} break;

	case QScriptDebuggerCommand::ScriptValueToString: {
	QScriptDebuggerValue value = command.scriptValue();
	QScriptEngine *engine = backend->engine();
	QScriptValue realValue = value.toScriptValue(engine);
	response.setResult(realValue.toString());
	} break;

	case QScriptDebuggerCommand::SetScriptValueProperty: {
	QScriptDebuggerValue object = command.scriptValue();
	QScriptEngine *engine = backend->engine();
	QScriptValue realObject = object.toScriptValue(engine);
	QScriptDebuggerValue value = command.subordinateScriptValue();
	QScriptValue realValue = value.toScriptValue(engine);
	QString name = command.name();
	realObject.setProperty(name, realValue);
	} break;

	case QScriptDebuggerCommand::ClearExceptions:
	backend->engine()->clearExceptions();
	break;

	case QScriptDebuggerCommand::UserCommand:
	case QScriptDebuggerCommand::MaxUserCommand:
	break;
	}
	return response;
	}

	QT_END_NAMESPACE