diff options
Diffstat (limited to 'src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp')
| -rw-r--r-- | src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp | 931 |
1 files changed, 931 insertions, 0 deletions
diff --git a/src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp b/src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp new file mode 100644 index 0000000000..5233a09992 --- /dev/null +++ b/src/plugins/qmltooling/qmldbg_debugger/qv4debugservice.cpp @@ -0,0 +1,931 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qv4debugservice.h" +#include "qqmlengine.h" +#include <private/qv4engine_p.h> +#include <private/qv4isel_moth_p.h> +#include <private/qv4function_p.h> +#include <private/qqmldebugconnector_p.h> + +#include <private/qv8engine_p.h> + +#include <QtCore/QJsonArray> +#include <QtCore/QJsonDocument> +#include <QtCore/QJsonObject> +#include <QtCore/QJsonValue> + +const char *const V4_CONNECT = "connect"; +const char *const V4_DISCONNECT = "disconnect"; +const char *const V4_BREAK_ON_SIGNAL = "breakonsignal"; +const char *const V4_PAUSE = "interrupt"; + +#define NO_PROTOCOL_TRACING +#ifdef NO_PROTOCOL_TRACING +# define TRACE_PROTOCOL(x) +#else +#include <QtCore/QDebug> +# define TRACE_PROTOCOL(x) x +#endif + +QT_BEGIN_NAMESPACE + +class V8CommandHandler; +class UnknownV8CommandHandler; + +int QV4DebugServiceImpl::debuggerIndex = 0; +int QV4DebugServiceImpl::sequence = 0; + +class V8CommandHandler +{ +public: + V8CommandHandler(const QString &command) + : cmd(command) + {} + + virtual ~V8CommandHandler() + {} + + QString command() const { return cmd; } + + void handle(const QJsonObject &request, QV4DebugServiceImpl *s) + { + TRACE_PROTOCOL(qDebug() << "handling command" << command() << "..."); + + req = request; + seq = req.value(QStringLiteral("seq")); + debugService = s; + + handleRequest(); + if (!response.isEmpty()) { + response[QLatin1String("type")] = QStringLiteral("response"); + debugService->send(response); + } + + debugService = 0; + seq = QJsonValue(); + req = QJsonObject(); + response = QJsonObject(); + } + + virtual void handleRequest() = 0; + +protected: + void addCommand() { response.insert(QStringLiteral("command"), cmd); } + void addRequestSequence() { response.insert(QStringLiteral("request_seq"), seq); } + void addSuccess(bool success) { response.insert(QStringLiteral("success"), success); } + void addBody(const QJsonObject &body) + { + response.insert(QStringLiteral("body"), body); + } + + void addRunning() + { + response.insert(QStringLiteral("running"), debugService->debuggerAgent.isRunning()); + } + + void addRefs() + { + response.insert(QStringLiteral("refs"), debugService->buildRefs()); + } + + void createErrorResponse(const QString &msg) + { + QJsonValue command = req.value(QStringLiteral("command")); + response.insert(QStringLiteral("command"), command); + addRequestSequence(); + addSuccess(false); + addRunning(); + response.insert(QStringLiteral("message"), msg); + } + + int requestSequenceNr() const + { return seq.toInt(-1); } + +protected: + QString cmd; + QJsonObject req; + QJsonValue seq; + QV4DebugServiceImpl *debugService; + QJsonObject response; +}; + +class UnknownV8CommandHandler: public V8CommandHandler +{ +public: + UnknownV8CommandHandler(): V8CommandHandler(QString()) {} + + virtual void handleRequest() + { + QString msg = QStringLiteral("unimplemented command \""); + msg += req.value(QStringLiteral("command")).toString(); + msg += QLatin1Char('"'); + createErrorResponse(msg); + } +}; + +namespace { +class V8VersionRequest: public V8CommandHandler +{ +public: + V8VersionRequest(): V8CommandHandler(QStringLiteral("version")) {} + + virtual void handleRequest() + { + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + QJsonObject body; + body.insert(QStringLiteral("V8Version"), + QLatin1String("this is not V8, this is V4 in Qt " QT_VERSION_STR)); + addBody(body); + } +}; + +class V8SetBreakPointRequest: public V8CommandHandler +{ +public: + V8SetBreakPointRequest(): V8CommandHandler(QStringLiteral("setbreakpoint")) {} + + virtual void handleRequest() + { + // decypher the payload: + QJsonObject args = req.value(QStringLiteral("arguments")).toObject(); + if (args.isEmpty()) + return; + + QString type = args.value(QStringLiteral("type")).toString(); + if (type != QStringLiteral("scriptRegExp")) { + createErrorResponse(QStringLiteral("breakpoint type \"%1\" is not implemented").arg(type)); + return; + } + + QString fileName = args.value(QStringLiteral("target")).toString(); + if (fileName.isEmpty()) { + createErrorResponse(QStringLiteral("breakpoint has no file name")); + return; + } + + int line = args.value(QStringLiteral("line")).toInt(-1); + if (line < 0) { + createErrorResponse(QStringLiteral("breakpoint has an invalid line number")); + return; + } + + bool enabled = args.value(QStringLiteral("enabled")).toBool(true); + QString condition = args.value(QStringLiteral("condition")).toString(); + + // set the break point: + int id = debugService->debuggerAgent.addBreakPoint(fileName, line + 1, enabled, condition); + + // response: + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + QJsonObject body; + body.insert(QStringLiteral("type"), type); + body.insert(QStringLiteral("breakpoint"), id); + // It's undocumented, but V8 sends back an actual_locations array too. However, our + // Debugger currently doesn't tell us when it resolved a breakpoint, so we'll leave them + // pending until the breakpoint is hit for the first time. + addBody(body); + } +}; + +class V8ClearBreakPointRequest: public V8CommandHandler +{ +public: + V8ClearBreakPointRequest(): V8CommandHandler(QStringLiteral("clearbreakpoint")) {} + + virtual void handleRequest() + { + // decypher the payload: + QJsonObject args = req.value(QStringLiteral("arguments")).toObject(); + if (args.isEmpty()) + return; + + int id = args.value(QStringLiteral("breakpoint")).toInt(-1); + if (id < 0) { + createErrorResponse(QStringLiteral("breakpoint has an invalid number")); + return; + } + + // remove the break point: + debugService->debuggerAgent.removeBreakPoint(id); + + // response: + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + QJsonObject body; + body.insert(QStringLiteral("type"), QStringLiteral("scriptRegExp")); + body.insert(QStringLiteral("breakpoint"), id); + addBody(body); + } +}; + +class V8BacktraceRequest: public V8CommandHandler +{ +public: + V8BacktraceRequest(): V8CommandHandler(QStringLiteral("backtrace")) {} + + virtual void handleRequest() + { + // decypher the payload: + + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + int fromFrame = arguments.value(QStringLiteral("fromFrame")).toInt(0); + int toFrame = arguments.value(QStringLiteral("toFrame")).toInt(fromFrame + 10); + // no idea what the bottom property is for, so we'll ignore it. + + QV4::Debugging::V4Debugger *debugger = debugService->debuggerAgent.firstDebugger(); + + QJsonArray frameArray; + QVector<QV4::StackFrame> frames = debugger->stackTrace(toFrame); + for (int i = fromFrame; i < toFrame && i < frames.size(); ++i) + frameArray.push_back(debugService->buildFrame(frames[i], i, debugger)); + + // response: + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + QJsonObject body; + if (frameArray.isEmpty()) { + body.insert(QStringLiteral("totalFrames"), 0); + } else { + body.insert(QStringLiteral("fromFrame"), fromFrame); + body.insert(QStringLiteral("toFrame"), fromFrame + frameArray.size()); + body.insert(QStringLiteral("frames"), frameArray); + } + addBody(body); + addRefs(); + } +}; + +class V8FrameRequest: public V8CommandHandler +{ +public: + V8FrameRequest(): V8CommandHandler(QStringLiteral("frame")) {} + + virtual void handleRequest() + { + // decypher the payload: + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + const int frameNr = arguments.value(QStringLiteral("number")).toInt( + debugService->selectedFrame()); + + QV4::Debugging::V4Debugger *debugger = debugService->debuggerAgent.firstDebugger(); + QVector<QV4::StackFrame> frames = debugger->stackTrace(frameNr + 1); + if (frameNr < 0 || frameNr >= frames.size()) { + createErrorResponse(QStringLiteral("frame command has invalid frame number")); + return; + } + + debugService->selectFrame(frameNr); + QJsonObject frame = debugService->buildFrame(frames[frameNr], frameNr, debugger); + + // response: + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + addBody(frame); + addRefs(); + } +}; + +class V8ScopeRequest: public V8CommandHandler +{ +public: + V8ScopeRequest(): V8CommandHandler(QStringLiteral("scope")) {} + + virtual void handleRequest() + { + // decypher the payload: + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + const int frameNr = arguments.value(QStringLiteral("frameNumber")).toInt( + debugService->selectedFrame()); + const int scopeNr = arguments.value(QStringLiteral("number")).toInt(0); + + QV4::Debugging::V4Debugger *debugger = debugService->debuggerAgent.firstDebugger(); + QVector<QV4::StackFrame> frames = debugger->stackTrace(frameNr + 1); + if (frameNr < 0 || frameNr >= frames.size()) { + createErrorResponse(QStringLiteral("scope command has invalid frame number")); + return; + } + if (scopeNr < 0) { + createErrorResponse(QStringLiteral("scope command has invalid scope number")); + return; + } + + QJsonObject scope = debugService->buildScope(frameNr, scopeNr, debugger); + + // response: + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + addBody(scope); + addRefs(); + } +}; + +class V8LookupRequest: public V8CommandHandler +{ +public: + V8LookupRequest(): V8CommandHandler(QStringLiteral("lookup")) {} + + virtual void handleRequest() + { + // decypher the payload: + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + QJsonArray handles = arguments.value(QStringLiteral("handles")).toArray(); + + QJsonObject body; + foreach (const QJsonValue &handle, handles) + body[QString::number(handle.toInt())] = debugService->lookup(handle.toInt()); + + // response: + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + addBody(body); + addRefs(); + } +}; + +class V8ContinueRequest: public V8CommandHandler +{ +public: + V8ContinueRequest(): V8CommandHandler(QStringLiteral("continue")) {} + + virtual void handleRequest() + { + // decypher the payload: + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + + QV4::Debugging::V4Debugger *debugger = debugService->debuggerAgent.firstDebugger(); + + if (arguments.empty()) { + debugger->resume(QV4::Debugging::V4Debugger::FullThrottle); + } else { + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + QString stepAction = arguments.value(QStringLiteral("stepaction")).toString(); + const int stepcount = arguments.value(QStringLiteral("stepcount")).toInt(1); + if (stepcount != 1) + qWarning() << "Step count other than 1 is not supported."; + + if (stepAction == QStringLiteral("in")) { + debugger->resume(QV4::Debugging::V4Debugger::StepIn); + } else if (stepAction == QStringLiteral("out")) { + debugger->resume(QV4::Debugging::V4Debugger::StepOut); + } else if (stepAction == QStringLiteral("next")) { + debugger->resume(QV4::Debugging::V4Debugger::StepOver); + } else { + createErrorResponse(QStringLiteral("continue command has invalid stepaction")); + return; + } + } + + // response: + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + } +}; + +class V8DisconnectRequest: public V8CommandHandler +{ +public: + V8DisconnectRequest(): V8CommandHandler(QStringLiteral("disconnect")) {} + + virtual void handleRequest() + { + debugService->debuggerAgent.removeAllBreakPoints(); + debugService->debuggerAgent.resumeAll(); + + // response: + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + } +}; + +class V8SetExceptionBreakRequest: public V8CommandHandler +{ +public: + V8SetExceptionBreakRequest(): V8CommandHandler(QStringLiteral("setexceptionbreak")) {} + + virtual void handleRequest() + { + bool wasEnabled = debugService->debuggerAgent.breakOnThrow(); + + //decypher the payload: + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + QString type = arguments.value(QStringLiteral("type")).toString(); + bool enabled = arguments.value(QStringLiteral("number")).toBool(!wasEnabled); + + if (type == QStringLiteral("all")) { + // that's fine + } else if (type == QStringLiteral("uncaught")) { + createErrorResponse(QStringLiteral("breaking only on uncaught exceptions is not supported yet")); + return; + } else { + createErrorResponse(QStringLiteral("invalid type for break on exception")); + return; + } + + // do it: + debugService->debuggerAgent.setBreakOnThrow(enabled); + + QJsonObject body; + body[QLatin1String("type")] = type; + body[QLatin1String("enabled")] = debugService->debuggerAgent.breakOnThrow(); + + // response: + addBody(body); + addRunning(); + addSuccess(true); + addRequestSequence(); + addCommand(); + } +}; + +class V8ScriptsRequest: public V8CommandHandler +{ +public: + V8ScriptsRequest(): V8CommandHandler(QStringLiteral("scripts")) {} + + virtual void handleRequest() + { + //decypher the payload: + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + int types = arguments.value(QStringLiteral("types")).toInt(-1); + if (types < 0 || types > 7) { + createErrorResponse(QStringLiteral("invalid types value in scripts command")); + return; + } else if (types != 4) { + createErrorResponse(QStringLiteral("unsupported types value in scripts command")); + return; + } + + // do it: + QV4::Debugging::V4Debugger *debugger = debugService->debuggerAgent.firstDebugger(); + GatherSourcesJob job(debugger->engine(), requestSequenceNr()); + debugger->runInEngine(&job); + + // response will be send by + } +}; + +// Request: +// { +// "seq": 4, +// "type": "request", +// "command": "evaluate", +// "arguments": { +// "expression": "a", +// "frame": 0 +// } +// } +// +// Response: +// { +// "body": { +// "handle": 3, +// "type": "number", +// "value": 1 +// }, +// "command": "evaluate", +// "refs": [], +// "request_seq": 4, +// "running": false, +// "seq": 5, +// "success": true, +// "type": "response" +// } +// +// The "value" key in "body" is the result of evaluating the expression in the request. +class V8EvaluateRequest: public V8CommandHandler +{ +public: + V8EvaluateRequest(): V8CommandHandler(QStringLiteral("evaluate")) {} + + virtual void handleRequest() + { + QV4::Debugging::V4Debugger *debugger = debugService->debuggerAgent.firstDebugger(); + if (debugger->state() == QV4::Debugging::V4Debugger::Paused) { + QJsonObject arguments = req.value(QStringLiteral("arguments")).toObject(); + QString expression = arguments.value(QStringLiteral("expression")).toString(); + const int frame = arguments.value(QStringLiteral("frame")).toInt(0); + + QV4DataCollector *collector = debugService->collector(); + RefHolder holder(collector, debugService->refs()); + ExpressionEvalJob job(debugger->engine(), frame, expression, collector); + debugger->runInEngine(&job); + if (job.hasExeption()) { + createErrorResponse(job.exceptionMessage()); + } else { + addCommand(); + addRequestSequence(); + addSuccess(true); + addRunning(); + addBody(collector->lookupRef(debugService->refs()->last())); + addRefs(); + } + } else { + createErrorResponse(QStringLiteral("Debugger has to be paused for evaluate to work.")); + } + } +}; +} // anonymous namespace + +void QV4DebugServiceImpl::addHandler(V8CommandHandler* handler) +{ + handlers[handler->command()] = handler; +} + +V8CommandHandler *QV4DebugServiceImpl::v8CommandHandler(const QString &command) const +{ + V8CommandHandler *handler = handlers.value(command, 0); + if (handler) + return handler; + else + return unknownV8CommandHandler.data(); +} + +QV4DebugServiceImpl::QV4DebugServiceImpl(QObject *parent) : + QQmlConfigurableDebugService<QV4DebugService>(1, parent), + debuggerAgent(this), version(1), theSelectedFrame(0), + unknownV8CommandHandler(new UnknownV8CommandHandler) +{ + addHandler(new V8VersionRequest); + addHandler(new V8SetBreakPointRequest); + addHandler(new V8ClearBreakPointRequest); + addHandler(new V8BacktraceRequest); + addHandler(new V8FrameRequest); + addHandler(new V8ScopeRequest); + addHandler(new V8LookupRequest); + addHandler(new V8ContinueRequest); + addHandler(new V8DisconnectRequest); + addHandler(new V8SetExceptionBreakRequest); + addHandler(new V8ScriptsRequest); + addHandler(new V8EvaluateRequest); +} + +QV4DebugServiceImpl::~QV4DebugServiceImpl() +{ + qDeleteAll(handlers); +} + +void QV4DebugServiceImpl::engineAboutToBeAdded(QQmlEngine *engine) +{ + QMutexLocker lock(&m_configMutex); + if (engine) { + QV4::ExecutionEngine *ee = QV8Engine::getV4(engine->handle()); + if (QQmlDebugConnector *server = QQmlDebugConnector::instance()) { + if (ee) { + ee->iselFactory.reset(new QV4::Moth::ISelFactory); + QV4::Debugging::V4Debugger *debugger = new QV4::Debugging::V4Debugger(ee); + if (state() == Enabled) + ee->setDebugger(debugger); + debuggerMap.insert(debuggerIndex++, debugger); + debuggerAgent.addDebugger(debugger); + debuggerAgent.moveToThread(server->thread()); + } + } + } + QQmlConfigurableDebugService<QV4DebugService>::engineAboutToBeAdded(engine); +} + +void QV4DebugServiceImpl::engineAboutToBeRemoved(QQmlEngine *engine) +{ + QMutexLocker lock(&m_configMutex); + if (engine){ + const QV4::ExecutionEngine *ee = QV8Engine::getV4(engine->handle()); + if (ee) { + QV4::Debugging::V4Debugger *debugger + = qobject_cast<QV4::Debugging::V4Debugger *>(ee->debugger); + if (debugger) { + typedef QMap<int, QV4::Debugging::V4Debugger *>::const_iterator DebuggerMapIterator; + const DebuggerMapIterator end = debuggerMap.constEnd(); + for (DebuggerMapIterator i = debuggerMap.constBegin(); i != end; ++i) { + if (i.value() == debugger) { + debuggerMap.remove(i.key()); + break; + } + } + debuggerAgent.removeDebugger(debugger); + } + } + } + QQmlConfigurableDebugService<QV4DebugService>::engineAboutToBeRemoved(engine); +} + +void QV4DebugServiceImpl::stateAboutToBeChanged(State state) +{ + QMutexLocker lock(&m_configMutex); + if (state == Enabled) { + typedef QMap<int, QV4::Debugging::V4Debugger *>::const_iterator DebuggerMapIterator; + const DebuggerMapIterator end = debuggerMap.constEnd(); + for (DebuggerMapIterator i = debuggerMap.constBegin(); i != end; ++i) { + QV4::ExecutionEngine *ee = i.value()->engine(); + if (!ee->debugger) + ee->setDebugger(i.value()); + } + } + QQmlConfigurableDebugService<QV4DebugService>::stateAboutToBeChanged(state); +} + +void QV4DebugServiceImpl::signalEmitted(const QString &signal) +{ + //This function is only called by QQmlBoundSignal + //only if there is a slot connected to the signal. Hence, there + //is no need for additional check. + + //Parse just the name and remove the class info + //Normalize to Lower case. + QString signalName = signal.left(signal.indexOf(QLatin1Char('('))).toLower(); + + foreach (const QString &signal, breakOnSignals) { + if (signal == signalName) { + // TODO: pause debugger + break; + } + } +} + +void QV4DebugServiceImpl::messageReceived(const QByteArray &message) +{ + QMutexLocker lock(&m_configMutex); + + QQmlDebugStream ms(message); + QByteArray header; + ms >> header; + + TRACE_PROTOCOL(qDebug() << "received message with header" << header); + + if (header == "V8DEBUG") { + QByteArray type; + QByteArray payload; + ms >> type >> payload; + TRACE_PROTOCOL(qDebug() << "... type:" << type); + + if (type == V4_CONNECT) { + emit messageToClient(name(), packMessage(type)); + stopWaiting(); + } else if (type == V4_PAUSE) { + debuggerAgent.pauseAll(); + sendSomethingToSomebody(type); + } else if (type == V4_BREAK_ON_SIGNAL) { + QByteArray signal; + bool enabled; + ms >> signal >> enabled; + //Normalize to lower case. + QString signalName(QString::fromUtf8(signal).toLower()); + if (enabled) + breakOnSignals.append(signalName); + else + breakOnSignals.removeOne(signalName); + } else if (type == "v8request") { + handleV8Request(payload); + } else if (type == V4_DISCONNECT) { + TRACE_PROTOCOL(qDebug() << "... payload:" << payload.constData()); + handleV8Request(payload); + } else { + sendSomethingToSomebody(type, 0); + } + } +} + +void QV4DebugServiceImpl::sendSomethingToSomebody(const char *type, int magicNumber) +{ + QByteArray response; + QQmlDebugStream rs(&response, QIODevice::WriteOnly); + rs << QByteArray(type) + << QByteArray::number(version) << QByteArray::number(magicNumber); + emit messageToClient(name(), packMessage(type, response)); +} + +void QV4DebugServiceImpl::handleV8Request(const QByteArray &payload) +{ + TRACE_PROTOCOL(qDebug() << "v8request, payload:" << payload.constData()); + + QJsonDocument request = QJsonDocument::fromJson(payload); + QJsonObject o = request.object(); + QJsonValue type = o.value(QStringLiteral("type")); + if (type.toString() == QStringLiteral("request")) { + QJsonValue command = o.value(QStringLiteral("command")); + V8CommandHandler *h = v8CommandHandler(command.toString()); + if (h) + h->handle(o, this); + } +} + +QByteArray QV4DebugServiceImpl::packMessage(const QByteArray &command, const QByteArray &message) +{ + QByteArray reply; + QQmlDebugStream rs(&reply, QIODevice::WriteOnly); + static const QByteArray cmd("V8DEBUG"); + rs << cmd << command << message; + return reply; +} + +void QV4DebugServiceImpl::send(QJsonObject v8Payload) +{ + v8Payload[QLatin1String("seq")] = sequence++; + QJsonDocument doc; + doc.setObject(v8Payload); +#ifdef NO_PROTOCOL_TRACING + QByteArray responseData = doc.toJson(QJsonDocument::Compact); +#else + QByteArray responseData = doc.toJson(QJsonDocument::Indented); +#endif + + TRACE_PROTOCOL(qDebug() << "sending response for:" << responseData.constData() << endl); + + emit messageToClient(name(), packMessage("v8message", responseData)); +} + +void QV4DebugServiceImpl::clearHandles(QV4::ExecutionEngine *engine) +{ + theCollector.reset(new QV4DataCollector(engine)); +} + +QJsonObject QV4DebugServiceImpl::buildFrame(const QV4::StackFrame &stackFrame, int frameNr, + QV4::Debugging::V4Debugger *debugger) +{ + QV4DataCollector::Ref ref; + + QJsonObject frame; + frame[QLatin1String("index")] = frameNr; + frame[QLatin1String("debuggerFrame")] = false; + ref = theCollector->addFunctionRef(stackFrame.function); + collectedRefs.append(ref); + frame[QLatin1String("func")] = toRef(ref); + ref = theCollector->addScriptRef(stackFrame.source); + collectedRefs.append(ref); + frame[QLatin1String("script")] = toRef(ref); + frame[QLatin1String("line")] = stackFrame.line - 1; + if (stackFrame.column >= 0) + frame[QLatin1String("column")] = stackFrame.column; + + QJsonArray scopes; + if (debugger->state() == QV4::Debugging::V4Debugger::Paused) { + RefHolder holder(theCollector.data(), &collectedRefs); + bool foundThis = false; + ThisCollectJob job(debugger->engine(), theCollector.data(), frameNr, &foundThis); + debugger->runInEngine(&job); + if (foundThis) + frame[QLatin1String("receiver")] = toRef(collectedRefs.last()); + + // Only type and index are used by Qt Creator, so we keep it easy: + QVector<QV4::Heap::ExecutionContext::ContextType> scopeTypes = + QV4DataCollector::getScopeTypes(debugger->engine(), frameNr); + for (int i = 0, ei = scopeTypes.count(); i != ei; ++i) { + int type = encodeScopeType(scopeTypes[i]); + if (type == -1) + continue; + + QJsonObject scope; + scope[QLatin1String("index")] = i; + scope[QLatin1String("type")] = type; + scopes.push_back(scope); + } + } + frame[QLatin1String("scopes")] = scopes; + + return frame; +} + +int QV4DebugServiceImpl::encodeScopeType(QV4::Heap::ExecutionContext::ContextType scopeType) +{ + switch (scopeType) { + case QV4::Heap::ExecutionContext::Type_GlobalContext: + return 0; + break; + case QV4::Heap::ExecutionContext::Type_CatchContext: + return 4; + break; + case QV4::Heap::ExecutionContext::Type_WithContext: + return 2; + break; + case QV4::Heap::ExecutionContext::Type_SimpleCallContext: + case QV4::Heap::ExecutionContext::Type_CallContext: + return 1; + break; + case QV4::Heap::ExecutionContext::Type_QmlContext: + default: + return -1; + } +} + +QJsonObject QV4DebugServiceImpl::buildScope(int frameNr, int scopeNr, + QV4::Debugging::V4Debugger *debugger) +{ + QJsonObject scope; + + QJsonObject object; + RefHolder holder(theCollector.data(), &collectedRefs); + theCollector->collectScope(&object, debugger, frameNr, scopeNr); + + if (debugger->state() == QV4::Debugging::V4Debugger::Paused) { + QVector<QV4::Heap::ExecutionContext::ContextType> scopeTypes = + QV4DataCollector::getScopeTypes(debugger->engine(), frameNr); + scope[QLatin1String("type")] = encodeScopeType(scopeTypes[scopeNr]); + } else { + scope[QLatin1String("type")] = -1; + } + scope[QLatin1String("index")] = scopeNr; + scope[QLatin1String("frameIndex")] = frameNr; + scope[QLatin1String("object")] = object; + + return scope; +} + +QJsonValue QV4DebugServiceImpl::lookup(QV4DataCollector::Ref refId) +{ + RefHolder holder(theCollector.data(), &collectedRefs); + return theCollector->lookupRef(refId); +} + +QJsonArray QV4DebugServiceImpl::buildRefs() +{ + QJsonArray refs; + std::sort(collectedRefs.begin(), collectedRefs.end()); + for (int i = 0, ei = collectedRefs.size(); i != ei; ++i) { + QV4DataCollector::Ref ref = collectedRefs.at(i); + if (i > 0 && ref == collectedRefs.at(i - 1)) + continue; + refs.append(lookup(ref)); + } + + collectedRefs.clear(); + return refs; +} + +QJsonValue QV4DebugServiceImpl::toRef(QV4DataCollector::Ref ref) +{ + QJsonObject dict; + dict.insert(QStringLiteral("ref"), qint64(ref)); + return dict; +} + +QV4DataCollector *QV4DebugServiceImpl::collector() const +{ + return theCollector.data(); +} + +QV4DataCollector::Refs *QV4DebugServiceImpl::refs() +{ + return &collectedRefs; +} + +void QV4DebugServiceImpl::selectFrame(int frameNr) +{ + theSelectedFrame = frameNr; +} + +int QV4DebugServiceImpl::selectedFrame() const +{ + return theSelectedFrame; +} + +QT_END_NAMESPACE |