diff options
Diffstat (limited to 'src/qml/jsruntime/qv4debugging.cpp')
| -rw-r--r-- | src/qml/jsruntime/qv4debugging.cpp | 320 |
1 files changed, 20 insertions, 300 deletions
diff --git a/src/qml/jsruntime/qv4debugging.cpp b/src/qml/jsruntime/qv4debugging.cpp index 7706a40da6..9fcba64038 100644 --- a/src/qml/jsruntime/qv4debugging.cpp +++ b/src/qml/jsruntime/qv4debugging.cpp @@ -1,31 +1,37 @@ /**************************************************************************** ** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtQml module of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:LGPL21$ +** $QT_BEGIN_LICENSE:LGPL$ ** 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. +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://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. +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.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. +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** @@ -51,290 +57,4 @@ QT_BEGIN_NAMESPACE -using namespace QV4; -using namespace QV4::Debugging; - -V4Debugger::JavaScriptJob::JavaScriptJob(QV4::ExecutionEngine *engine, int frameNr, - const QString &script) - : engine(engine) - , frameNr(frameNr) - , script(script) - , resultIsException(false) -{} - -void V4Debugger::JavaScriptJob::run() -{ - Scope scope(engine); - - ExecutionContextSaver saver(scope); - - ExecutionContext *ctx = engine->currentContext; - if (frameNr > 0) { - for (int i = 0; i < frameNr; ++i) { - ctx = engine->parentContext(ctx); - } - engine->pushContext(ctx); - } - - QV4::Script script(ctx, this->script); - script.strictMode = ctx->d()->strictMode; - // In order for property lookups in QML to work, we need to disable fast v4 lookups. That - // is a side-effect of inheritContext. - script.inheritContext = true; - script.parse(); - QV4::ScopedValue result(scope); - if (!scope.engine->hasException) - result = script.run(); - if (scope.engine->hasException) { - result = scope.engine->catchException(); - resultIsException = true; - } - handleResult(result); -} - -bool V4Debugger::JavaScriptJob::hasExeption() const -{ - return resultIsException; -} - -class EvalJob: public V4Debugger::JavaScriptJob -{ - bool result; - -public: - EvalJob(QV4::ExecutionEngine *engine, const QString &script) - : V4Debugger::JavaScriptJob(engine, /*frameNr*/-1, script) - , result(false) - {} - - virtual void handleResult(QV4::ScopedValue &result) - { - this->result = result->toBoolean(); - } - - bool resultAsBoolean() const - { - return result; - } -}; - -V4Debugger::V4Debugger(QV4::ExecutionEngine *engine) - : m_engine(engine) - , m_state(Running) - , m_stepping(NotStepping) - , m_pauseRequested(false) - , m_haveBreakPoints(false) - , m_breakOnThrow(false) - , m_returnedValue(engine, Primitive::undefinedValue()) - , m_gatherSources(0) - , m_runningJob(0) -{ - qMetaTypeId<V4Debugger*>(); - qMetaTypeId<PauseReason>(); -} - -void V4Debugger::pause() -{ - QMutexLocker locker(&m_lock); - if (m_state == Paused) - return; - m_pauseRequested = true; -} - -void V4Debugger::resume(Speed speed) -{ - QMutexLocker locker(&m_lock); - if (m_state != Paused) - return; - - if (!m_returnedValue.isUndefined()) - m_returnedValue.set(m_engine, Encode::undefined()); - - m_currentContext.set(m_engine, *m_engine->currentContext); - m_stepping = speed; - m_runningCondition.wakeAll(); -} - -void V4Debugger::addBreakPoint(const QString &fileName, int lineNumber, const QString &condition) -{ - QMutexLocker locker(&m_lock); - m_breakPoints.insert(DebuggerBreakPoint(fileName.mid(fileName.lastIndexOf('/') + 1), lineNumber), condition); - m_haveBreakPoints = true; -} - -void V4Debugger::removeBreakPoint(const QString &fileName, int lineNumber) -{ - QMutexLocker locker(&m_lock); - m_breakPoints.remove(DebuggerBreakPoint(fileName.mid(fileName.lastIndexOf('/') + 1), lineNumber)); - m_haveBreakPoints = !m_breakPoints.isEmpty(); -} - -void V4Debugger::setBreakOnThrow(bool onoff) -{ - QMutexLocker locker(&m_lock); - - m_breakOnThrow = onoff; -} - -V4Debugger::ExecutionState V4Debugger::currentExecutionState() const -{ - ExecutionState state; - state.fileName = getFunction()->sourceFile(); - state.lineNumber = engine()->current->lineNumber; - - return state; -} - -QVector<StackFrame> V4Debugger::stackTrace(int frameLimit) const -{ - return m_engine->stackTrace(frameLimit); -} - -void V4Debugger::maybeBreakAtInstruction() -{ - if (m_runningJob) // do not re-enter when we're doing a job for the debugger. - return; - - QMutexLocker locker(&m_lock); - - if (m_gatherSources) { - m_gatherSources->run(); - delete m_gatherSources; - m_gatherSources = 0; - } - - switch (m_stepping) { - case StepOver: - if (m_currentContext.asManaged()->d() != m_engine->current) - break; - // fall through - case StepIn: - pauseAndWait(Step); - return; - case StepOut: - case NotStepping: - break; - } - - if (m_pauseRequested) { // Serve debugging requests from the agent - m_pauseRequested = false; - pauseAndWait(PauseRequest); - } else if (m_haveBreakPoints) { - if (Function *f = getFunction()) { - const int lineNumber = engine()->current->lineNumber; - if (reallyHitTheBreakPoint(f->sourceFile(), lineNumber)) - pauseAndWait(BreakPoint); - } - } -} - -void V4Debugger::enteringFunction() -{ - if (m_runningJob) - return; - QMutexLocker locker(&m_lock); - - if (m_stepping == StepIn) { - m_currentContext.set(m_engine, *m_engine->currentContext); - } -} - -void V4Debugger::leavingFunction(const ReturnedValue &retVal) -{ - if (m_runningJob) - return; - Q_UNUSED(retVal); // TODO - - QMutexLocker locker(&m_lock); - - if (m_stepping != NotStepping && m_currentContext.asManaged()->d() == m_engine->current) { - m_currentContext.set(m_engine, *m_engine->parentContext(m_engine->currentContext)); - m_stepping = StepOver; - m_returnedValue.set(m_engine, retVal); - } -} - -void V4Debugger::aboutToThrow() -{ - if (!m_breakOnThrow) - return; - - if (m_runningJob) // do not re-enter when we're doing a job for the debugger. - return; - - QMutexLocker locker(&m_lock); - pauseAndWait(Throwing); -} - -Function *V4Debugger::getFunction() const -{ - Scope scope(m_engine); - ExecutionContext *context = m_engine->currentContext; - ScopedFunctionObject function(scope, context->getFunctionObject()); - if (function) - return function->function(); - else - return context->d()->engine->globalCode; -} - -void V4Debugger::pauseAndWait(PauseReason reason) -{ - if (m_runningJob) - return; - - m_state = Paused; - emit debuggerPaused(this, reason); - - while (true) { - m_runningCondition.wait(&m_lock); - if (m_runningJob) { - m_runningJob->run(); - m_jobIsRunning.wakeAll(); - } else { - break; - } - } - - m_state = Running; -} - -bool V4Debugger::reallyHitTheBreakPoint(const QString &filename, int linenr) -{ - BreakPoints::iterator it = m_breakPoints.find(DebuggerBreakPoint(filename.mid(filename.lastIndexOf('/') + 1), linenr)); - if (it == m_breakPoints.end()) - return false; - QString condition = it.value(); - if (condition.isEmpty()) - return true; - - Q_ASSERT(m_runningJob == 0); - EvalJob evilJob(m_engine, condition); - m_runningJob = &evilJob; - m_runningJob->run(); - m_runningJob = 0; - - return evilJob.resultAsBoolean(); -} - -void V4Debugger::runInEngine(V4Debugger::Job *job) -{ - QMutexLocker locker(&m_lock); - runInEngine_havingLock(job); -} - -void V4Debugger::runInEngine_havingLock(V4Debugger::Job *job) -{ - Q_ASSERT(job); - Q_ASSERT(m_runningJob == 0); - - m_runningJob = job; - m_runningCondition.wakeAll(); - m_jobIsRunning.wait(&m_lock); - m_runningJob = 0; -} - -V4Debugger::Job::~Job() -{ -} - QT_END_NAMESPACE |