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Diffstat (limited to 'src/declarative/qml/qdeclarativevme.cpp')
| -rw-r--r-- | src/declarative/qml/qdeclarativevme.cpp | 1370 |
1 files changed, 0 insertions, 1370 deletions
diff --git a/src/declarative/qml/qdeclarativevme.cpp b/src/declarative/qml/qdeclarativevme.cpp deleted file mode 100644 index 254ae5de43..0000000000 --- a/src/declarative/qml/qdeclarativevme.cpp +++ /dev/null @@ -1,1370 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** 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 "qdeclarativevme_p.h" - -#include "qdeclarativecompiler_p.h" -#include "qdeclarativeboundsignal_p.h" -#include "qdeclarativestringconverters_p.h" -#include <private/qmetaobjectbuilder_p.h> -#include <private/qfastmetabuilder_p.h> -#include "qdeclarativedata_p.h" -#include "qdeclarative.h" -#include "qdeclarativecustomparser_p.h" -#include "qdeclarativeengine.h" -#include "qdeclarativecontext.h" -#include "qdeclarativecomponent.h" -#include "qdeclarativecomponentattached_p.h" -#include "qdeclarativebinding_p.h" -#include "qdeclarativeengine_p.h" -#include "qdeclarativecomponent_p.h" -#include "qdeclarativevmemetaobject_p.h" -#include "qdeclarativebinding_p_p.h" -#include "qdeclarativecontext_p.h" -#include <private/qv4bindings_p.h> -#include <private/qv8bindings_p.h> -#include "qdeclarativeglobal_p.h" -#include <private/qfinitestack_p.h> -#include "qdeclarativescriptstring.h" -#include "qdeclarativescriptstring_p.h" -#include "qdeclarativepropertyvalueinterceptor_p.h" - -#include <QStack> -#include <QColor> -#include <QPointF> -#include <QSizeF> -#include <QRectF> -#include <QtCore/qdebug.h> -#include <QtCore/qvarlengtharray.h> -#include <QtCore/qcoreapplication.h> -#include <QtCore/qdatetime.h> -#include <QtCore/qvarlengtharray.h> -#include <QtDeclarative/qjsvalue.h> - -QT_BEGIN_NAMESPACE - -using namespace QDeclarativeVMETypes; - -#define VME_EXCEPTION(desc, line) \ - { \ - QDeclarativeError error; \ - error.setDescription(desc.trimmed()); \ - error.setLine(line); \ - error.setUrl(COMP->url); \ - *errors << error; \ - goto exceptionExit; \ - } - -void QDeclarativeVME::init(QDeclarativeContextData *ctxt, QDeclarativeCompiledData *comp, int start, - QDeclarativeContextData *creation) -{ - Q_ASSERT(ctxt); - Q_ASSERT(comp); - - if (start == -1) { - start = 0; - } else { - creationContext = creation; - } - - State initState; - initState.context = ctxt; - initState.compiledData = comp; - initState.instructionStream = comp->bytecode.constData() + start; - states.push(initState); - - typedef QDeclarativeInstruction I; - I *i = (I *)initState.instructionStream; - - Q_ASSERT(comp->instructionType(i) == I::Init); - - objects.allocate(i->init.objectStackSize); - lists.allocate(i->init.listStackSize); - bindValues.allocate(i->init.bindingsSize); - parserStatus.allocate(i->init.parserStatusSize); - -#ifdef QML_ENABLE_TRACE - parserStatusData.allocate(i->init.parserStatusSize); - rootComponent = comp; -#endif - - rootContext = 0; - engine = ctxt->engine; -} - -bool QDeclarativeVME::initDeferred(QObject *object) -{ - QDeclarativeData *data = QDeclarativeData::get(object); - - if (!data || !data->context || !data->deferredComponent) - return false; - - QDeclarativeContextData *ctxt = data->context; - QDeclarativeCompiledData *comp = data->deferredComponent; - int start = data->deferredIdx; - - State initState; - initState.flags = State::Deferred; - initState.context = ctxt; - initState.compiledData = comp; - initState.instructionStream = comp->bytecode.constData() + start; - states.push(initState); - - typedef QDeclarativeInstruction I; - I *i = (I *)initState.instructionStream; - - Q_ASSERT(comp->instructionType(i) == I::DeferInit); - - objects.allocate(i->deferInit.objectStackSize); - lists.allocate(i->deferInit.listStackSize); - bindValues.allocate(i->deferInit.bindingsSize); - parserStatus.allocate(i->deferInit.parserStatusSize); - - objects.push(object); - -#ifdef QML_ENABLE_TRACE - parserStatusData.allocate(i->deferInit.parserStatusSize); - rootComponent = comp; -#endif - - rootContext = 0; - engine = ctxt->engine; - - return true; -} - -namespace { -struct ActiveVMERestorer -{ - ActiveVMERestorer(QDeclarativeVME *me, QDeclarativeEnginePrivate *ep) - : ep(ep), oldVME(ep->activeVME) { ep->activeVME = me; } - ~ActiveVMERestorer() { ep->activeVME = oldVME; } - - QDeclarativeEnginePrivate *ep; - QDeclarativeVME *oldVME; -}; -} - -QObject *QDeclarativeVME::execute(QList<QDeclarativeError> *errors, const Interrupt &interrupt) -{ - Q_ASSERT(states.count() >= 1); - -#ifdef QML_ENABLE_TRACE - QDeclarativeTrace trace("VME Execute"); - trace.addDetail("URL", rootComponent->url); -#endif - - QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(states.at(0).context->engine); - - ActiveVMERestorer restore(this, ep); - - QObject *rv = run(errors, interrupt); - - return rv; -} - -inline bool fastHasBinding(QObject *o, int index) -{ - QDeclarativeData *ddata = static_cast<QDeclarativeData *>(QObjectPrivate::get(o)->declarativeData); - - return ddata && (ddata->bindingBitsSize > index) && - (ddata->bindingBits[index / 32] & (1 << (index % 32))); -} - -static void removeBindingOnProperty(QObject *o, int index) -{ - QDeclarativeAbstractBinding *binding = QDeclarativePropertyPrivate::setBinding(o, index, -1, 0); - if (binding) binding->destroy(); -} - -static QVariant variantFromString(const QString &string) -{ - return QDeclarativeStringConverters::variantFromString(string); -} - -// XXX we probably need some form of "work count" here to prevent us checking this -// for every instruction. -#define QML_BEGIN_INSTR_COMMON(I) { \ - const QDeclarativeInstructionMeta<(int)QDeclarativeInstruction::I>::DataType &instr = QDeclarativeInstructionMeta<(int)QDeclarativeInstruction::I>::data(*genericInstr); \ - INSTRUCTIONSTREAM += QDeclarativeInstructionMeta<(int)QDeclarativeInstruction::I>::Size; \ - Q_UNUSED(instr); - -#ifdef QML_THREADED_VME_INTERPRETER -# define QML_BEGIN_INSTR(I) op_##I: \ - QML_BEGIN_INSTR_COMMON(I) - -# define QML_NEXT_INSTR(I) { \ - if (watcher.hasRecursed()) return 0; \ - genericInstr = reinterpret_cast<const QDeclarativeInstruction *>(INSTRUCTIONSTREAM); \ - goto *genericInstr->common.code; \ - } - -# define QML_END_INSTR(I) } \ - if (watcher.hasRecursed()) return 0; \ - genericInstr = reinterpret_cast<const QDeclarativeInstruction *>(INSTRUCTIONSTREAM); \ - if (interrupt.shouldInterrupt()) return 0; \ - goto *genericInstr->common.code; - -#else -# define QML_BEGIN_INSTR(I) \ - case QDeclarativeInstruction::I: \ - QML_BEGIN_INSTR_COMMON(I) - -# define QML_NEXT_INSTR(I) { \ - if (watcher.hasRecursed()) return 0; \ - break; \ - } - -# define QML_END_INSTR(I) \ - if (watcher.hasRecursed() || interrupt.shouldInterrupt()) return 0; \ - } break; -#endif - -#define QML_STORE_VALUE(name, cpptype, value) \ - QML_BEGIN_INSTR(name) \ - cpptype v = value; \ - void *a[] = { (void *)&v, 0, &status, &flags }; \ - QObject *target = objects.top(); \ - CLEAN_PROPERTY(target, instr.propertyIndex); \ - QMetaObject::metacall(target, QMetaObject::WriteProperty, instr.propertyIndex, a); \ - QML_END_INSTR(name) - -#define QML_STORE_LIST(name, cpptype, value) \ - QML_BEGIN_INSTR(name) \ - cpptype v; \ - v.append(value); \ - void *a[] = { (void *)&v, 0, &status, &flags }; \ - QObject *target = objects.top(); \ - CLEAN_PROPERTY(target, instr.propertyIndex); \ - QMetaObject::metacall(target, QMetaObject::WriteProperty, instr.propertyIndex, a); \ - QML_END_INSTR(name) - -#define QML_STORE_VAR(name, value) \ - QML_BEGIN_INSTR(name) \ - v8::Handle<v8::Value> v8value = value; \ - QObject *target = objects.top(); \ - CLEAN_PROPERTY(target, instr.propertyIndex); \ - QMetaObject *mo = const_cast<QMetaObject *>(target->metaObject()); \ - QDeclarativeVMEMetaObject *vmemo = static_cast<QDeclarativeVMEMetaObject *>(mo); \ - vmemo->setVMEProperty(instr.propertyIndex, v8value); \ - QML_END_INSTR(name) - -#define QML_STORE_POINTER(name, value) \ - QML_BEGIN_INSTR(name) \ - void *a[] = { (void *)value, 0, &status, &flags }; \ - QObject *target = objects.top(); \ - CLEAN_PROPERTY(target, instr.propertyIndex); \ - QMetaObject::metacall(target, QMetaObject::WriteProperty, instr.propertyIndex, a); \ - QML_END_INSTR(name) - -#define CLEAN_PROPERTY(o, index) \ - if (fastHasBinding(o, index)) \ - removeBindingOnProperty(o, index) - -QObject *QDeclarativeVME::run(QList<QDeclarativeError> *errors, - const Interrupt &interrupt -#ifdef QML_THREADED_VME_INTERPRETER - , void ***storeJumpTable -#endif - ) -{ -#ifdef QML_THREADED_VME_INTERPRETER - if (storeJumpTable) { -#define QML_INSTR_ADDR(I, FMT) &&op_##I, - static void *jumpTable[] = { - FOR_EACH_QML_INSTR(QML_INSTR_ADDR) - }; -#undef QML_INSTR_ADDR - *storeJumpTable = jumpTable; - return 0; - } -#endif - Q_ASSERT(errors->isEmpty()); - Q_ASSERT(states.count() >= 1); - - QDeclarativeEngine *engine = states.at(0).context->engine; - QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(engine); - - // Need a v8 handle scope and execution context for StoreVar instructions. - v8::HandleScope handleScope; - v8::Context::Scope contextScope(ep->v8engine()->context()); - - int status = -1; // needed for dbus - QDeclarativePropertyPrivate::WriteFlags flags = QDeclarativePropertyPrivate::BypassInterceptor | - QDeclarativePropertyPrivate::RemoveBindingOnAliasWrite; - - QRecursionWatcher<QDeclarativeVME, &QDeclarativeVME::recursion> watcher(this); - -#define COMP states.top().compiledData -#define CTXT states.top().context -#define INSTRUCTIONSTREAM states.top().instructionStream -#define BINDINGSKIPLIST states.top().bindingSkipList - -#define TYPES COMP->types -#define PRIMITIVES COMP->primitives -#define DATAS COMP->datas -#define PROGRAMS COMP->programs -#define PROPERTYCACHES COMP->propertyCaches -#define SCRIPTS COMP->scripts -#define URLS COMP->urls - -#ifdef QML_THREADED_VME_INTERPRETER - const QDeclarativeInstruction *genericInstr = reinterpret_cast<const QDeclarativeInstruction *>(INSTRUCTIONSTREAM); - goto *genericInstr->common.code; -#else - for (;;) { - const QDeclarativeInstruction *genericInstr = reinterpret_cast<const QDeclarativeInstruction *>(INSTRUCTIONSTREAM); - - switch (genericInstr->common.instructionType) { -#endif - - // Store a created object in a property. These all pop from the objects stack. - QML_STORE_VALUE(StoreObject, QObject *, objects.pop()); - QML_STORE_VALUE(StoreVariantObject, QVariant, QVariant::fromValue(objects.pop())); - QML_STORE_VAR(StoreVarObject, ep->v8engine()->newQObject(objects.pop())); - - // Store a literal value in a corresponding property - QML_STORE_VALUE(StoreFloat, float, instr.value); - QML_STORE_VALUE(StoreDouble, double, instr.value); - QML_STORE_VALUE(StoreBool, bool, instr.value); - QML_STORE_VALUE(StoreInteger, int, instr.value); - QML_STORE_VALUE(StoreColor, QColor, QColor::fromRgba(instr.value)); - QML_STORE_VALUE(StoreDate, QDate, QDate::fromJulianDay(instr.value)); - QML_STORE_VALUE(StoreDateTime, QDateTime, - QDateTime(QDate::fromJulianDay(instr.date), *(QTime *)&instr.time)); - QML_STORE_POINTER(StoreTime, (QTime *)&instr.time); - QML_STORE_POINTER(StorePoint, (QPoint *)&instr.point); - QML_STORE_POINTER(StorePointF, (QPointF *)&instr.point); - QML_STORE_POINTER(StoreSize, (QSize *)&instr.size); - QML_STORE_POINTER(StoreSizeF, (QSizeF *)&instr.size); - QML_STORE_POINTER(StoreRect, (QRect *)&instr.rect); - QML_STORE_POINTER(StoreRectF, (QRectF *)&instr.rect); - QML_STORE_POINTER(StoreVector3D, (QVector3D *)&instr.vector); - QML_STORE_POINTER(StoreVector4D, (QVector4D *)&instr.vector); - QML_STORE_POINTER(StoreString, &PRIMITIVES.at(instr.value)); - QML_STORE_POINTER(StoreByteArray, &DATAS.at(instr.value)); - QML_STORE_POINTER(StoreUrl, &URLS.at(instr.value)); - QML_STORE_VALUE(StoreTrString, QString, - QCoreApplication::translate(DATAS.at(instr.context).constData(), - DATAS.at(instr.text).constData(), - DATAS.at(instr.comment).constData(), - QCoreApplication::UnicodeUTF8, - instr.n)); - QML_STORE_VALUE(StoreTrIdString, QString, qtTrId(DATAS.at(instr.text).constData(), instr.n)); - - // Store a literal value in a QList - QML_STORE_LIST(StoreStringList, QStringList, PRIMITIVES.at(instr.value)); - QML_STORE_LIST(StoreStringQList, QList<QString>, PRIMITIVES.at(instr.value)); - QML_STORE_LIST(StoreUrlQList, QList<QUrl>, URLS.at(instr.value)); - QML_STORE_LIST(StoreDoubleQList, QList<double>, instr.value); - QML_STORE_LIST(StoreBoolQList, QList<bool>, instr.value); - QML_STORE_LIST(StoreIntegerQList, QList<int>, instr.value); - - // Store a literal value in a QVariant property - QML_STORE_VALUE(StoreVariant, QVariant, variantFromString(PRIMITIVES.at(instr.value))); - QML_STORE_VALUE(StoreVariantInteger, QVariant, QVariant(instr.value)); - QML_STORE_VALUE(StoreVariantDouble, QVariant, QVariant(instr.value)); - QML_STORE_VALUE(StoreVariantBool, QVariant, QVariant(instr.value)); - - // Store a literal value in a var property. - // We deliberately do not use string converters here - QML_STORE_VAR(StoreVar, ep->v8engine()->fromVariant(PRIMITIVES.at(instr.value))); - QML_STORE_VAR(StoreVarInteger, v8::Integer::New(instr.value)); - QML_STORE_VAR(StoreVarDouble, v8::Number::New(instr.value)); - QML_STORE_VAR(StoreVarBool, v8::Boolean::New(instr.value)); - - - QML_BEGIN_INSTR(Init) - // Ensure that the compiled data has been initialized - if (!COMP->isInitialized()) COMP->initialize(engine); - - QDeclarativeContextData *parentCtxt = CTXT; - CTXT = new QDeclarativeContextData; - CTXT->isInternal = true; - CTXT->url = COMP->url; - CTXT->urlString = COMP->name; - CTXT->imports = COMP->importCache; - CTXT->imports->addref(); - CTXT->setParent(parentCtxt); - if (instr.contextCache != -1) - CTXT->setIdPropertyData(COMP->contextCaches.at(instr.contextCache)); - if (instr.compiledBinding != -1) { - const char *v4data = DATAS.at(instr.compiledBinding).constData(); - CTXT->v4bindings = new QV4Bindings(v4data, CTXT, COMP); - } - if (states.count() == 1) { - rootContext = CTXT; - rootContext->activeVMEData = data; - } - if (states.count() == 1 && !creationContext.isNull()) { - // A component that is logically created within another component instance shares the - // same instances of script imports. For example: - // - // import QtQuick 2.0 - // import "test.js" as Test - // ListView { - // model: Test.getModel() - // delegate: Component { - // Text { text: Test.getValue(index); } - // } - // } - // - // Has the same "Test" instance. To implement this, we simply copy the v8 handles into - // the inner context. We have to create a fresh persistent handle for each to prevent - // double dispose. It is possible we could do this more efficiently using some form of - // referencing instead. - CTXT->importedScripts = creationContext->importedScripts; - for (int ii = 0; ii < CTXT->importedScripts.count(); ++ii) - CTXT->importedScripts[ii] = qPersistentNew<v8::Object>(CTXT->importedScripts[ii]); - } - QML_END_INSTR(Init) - - QML_BEGIN_INSTR(DeferInit) - QML_END_INSTR(DeferInit) - - QML_BEGIN_INSTR(Done) - states.pop(); - - if (states.isEmpty()) - goto normalExit; - QML_END_INSTR(Done) - - QML_BEGIN_INSTR(CreateQMLObject) - const QDeclarativeCompiledData::TypeReference &type = TYPES.at(instr.type); - Q_ASSERT(type.component); - - states.push(State()); - - State *cState = &states[states.count() - 2]; - State *nState = &states[states.count() - 1]; - - nState->context = cState->context; - nState->compiledData = type.component; - nState->instructionStream = type.component->bytecode.constData(); - - if (instr.bindingBits != -1) { - const QByteArray &bits = cState->compiledData->datas.at(instr.bindingBits); - nState->bindingSkipList = QBitField((const quint32*)bits.constData(), - bits.size() * 8); - } - if (instr.isRoot) - nState->bindingSkipList = nState->bindingSkipList.united(cState->bindingSkipList); - - // As the state in the state stack changed, execution will continue in the new program. - QML_END_INSTR(CreateQMLObject) - - QML_BEGIN_INSTR(CompleteQMLObject) - QObject *o = objects.top(); - - QDeclarativeData *ddata = QDeclarativeData::get(o); - Q_ASSERT(ddata); - - if (instr.isRoot) { - if (ddata->context) { - Q_ASSERT(ddata->context != CTXT); - Q_ASSERT(ddata->outerContext); - Q_ASSERT(ddata->outerContext != CTXT); - QDeclarativeContextData *c = ddata->context; - while (c->linkedContext) c = c->linkedContext; - c->linkedContext = CTXT; - } else { - CTXT->addObject(o); - } - - ddata->ownContext = true; - } else if (!ddata->context) { - CTXT->addObject(o); - } - - ddata->setImplicitDestructible(); - ddata->outerContext = CTXT; - ddata->lineNumber = instr.line; - ddata->columnNumber = instr.column; - QML_END_INSTR(CompleteQMLObject) - - QML_BEGIN_INSTR(CreateCppObject) - const QDeclarativeCompiledData::TypeReference &type = TYPES.at(instr.type); - Q_ASSERT(type.type); - - QObject *o = 0; - void *memory = 0; - type.type->create(&o, &memory, sizeof(QDeclarativeData)); - QDeclarativeData *ddata = new (memory) QDeclarativeData; - ddata->ownMemory = false; - QObjectPrivate::get(o)->declarativeData = ddata; - - if (type.typePropertyCache && !ddata->propertyCache) { - ddata->propertyCache = type.typePropertyCache; - ddata->propertyCache->addref(); - } - - if (!o) - VME_EXCEPTION(tr("Unable to create object of type %1").arg(type.className), instr.line); - - if (instr.isRoot) { - if (ddata->context) { - Q_ASSERT(ddata->context != CTXT); - Q_ASSERT(ddata->outerContext); - Q_ASSERT(ddata->outerContext != CTXT); - QDeclarativeContextData *c = ddata->context; - while (c->linkedContext) c = c->linkedContext; - c->linkedContext = CTXT; - } else { - CTXT->addObject(o); - } - - ddata->ownContext = true; - } else if (!ddata->context) { - CTXT->addObject(o); - } - - ddata->setImplicitDestructible(); - ddata->outerContext = CTXT; - ddata->lineNumber = instr.line; - ddata->columnNumber = instr.column; - - if (instr.data != -1) { - QDeclarativeCustomParser *customParser = - TYPES.at(instr.type).type->customParser(); - customParser->setCustomData(o, DATAS.at(instr.data)); - } - if (!objects.isEmpty()) { - QObject *parent = objects.top(); -#if 0 // ### refactor - if (o->isWidgetType() && parent->isWidgetType()) - static_cast<QWidget*>(o)->setParent(static_cast<QWidget*>(parent)); - else -#endif - QDeclarative_setParent_noEvent(o, parent); - } - objects.push(o); - QML_END_INSTR(CreateCppObject) - - QML_BEGIN_INSTR(CreateSimpleObject) - QObject *o = (QObject *)operator new(instr.typeSize + sizeof(QDeclarativeData)); - ::memset(o, 0, instr.typeSize + sizeof(QDeclarativeData)); - instr.create(o); - - QDeclarativeData *ddata = (QDeclarativeData *)(((const char *)o) + instr.typeSize); - const QDeclarativeCompiledData::TypeReference &ref = TYPES.at(instr.type); - if (!ddata->propertyCache && ref.typePropertyCache) { - ddata->propertyCache = ref.typePropertyCache; - ddata->propertyCache->addref(); - } - ddata->lineNumber = instr.line; - ddata->columnNumber = instr.column; - - QObjectPrivate::get(o)->declarativeData = ddata; - ddata->context = ddata->outerContext = CTXT; - ddata->nextContextObject = CTXT->contextObjects; - if (ddata->nextContextObject) - ddata->nextContextObject->prevContextObject = &ddata->nextContextObject; - ddata->prevContextObject = &CTXT->contextObjects; - CTXT->contextObjects = ddata; - - QObject *parent = objects.top(); - QDeclarative_setParent_noEvent(o, parent); - - objects.push(o); - QML_END_INSTR(CreateSimpleObject) - - QML_BEGIN_INSTR(SetId) - QObject *target = objects.top(); - CTXT->setIdProperty(instr.index, target); - QML_END_INSTR(SetId) - - QML_BEGIN_INSTR(SetDefault) - CTXT->contextObject = objects.top(); - QML_END_INSTR(SetDefault) - - QML_BEGIN_INSTR(CreateComponent) - QDeclarativeComponent *qcomp = - new QDeclarativeComponent(CTXT->engine, COMP, INSTRUCTIONSTREAM - COMP->bytecode.constData(), - objects.isEmpty() ? 0 : objects.top()); - - QDeclarativeData *ddata = QDeclarativeData::get(qcomp, true); - Q_ASSERT(ddata); - - CTXT->addObject(qcomp); - - if (instr.isRoot) - ddata->ownContext = true; - - ddata->setImplicitDestructible(); - ddata->outerContext = CTXT; - ddata->lineNumber = instr.line; - ddata->columnNumber = instr.column; - - QDeclarativeComponentPrivate::get(qcomp)->creationContext = CTXT; - - objects.push(qcomp); - INSTRUCTIONSTREAM += instr.count; - QML_END_INSTR(CreateComponent) - - QML_BEGIN_INSTR(StoreMetaObject) - QObject *target = objects.top(); - - QMetaObject mo; - const QByteArray &metadata = DATAS.at(instr.data); - QFastMetaBuilder::fromData(&mo, 0, metadata); - - const QDeclarativeVMEMetaData *data = - (const QDeclarativeVMEMetaData *)DATAS.at(instr.aliasData).constData(); - - (void)new QDeclarativeVMEMetaObject(target, &mo, data, COMP); - - if (instr.propertyCache != -1) { - QDeclarativeData *ddata = QDeclarativeData::get(target, true); - if (ddata->propertyCache) ddata->propertyCache->release(); - ddata->propertyCache = PROPERTYCACHES.at(instr.propertyCache); - ddata->propertyCache->addref(); - } - QML_END_INSTR(StoreMetaObject) - - QML_BEGIN_INSTR(AssignCustomType) - QObject *target = objects.top(); - CLEAN_PROPERTY(target, instr.propertyIndex); - - const QString &primitive = PRIMITIVES.at(instr.primitive); - int type = instr.type; - QDeclarativeMetaType::StringConverter converter = QDeclarativeMetaType::customStringConverter(type); - QVariant v = (*converter)(primitive); - - QMetaProperty prop = - target->metaObject()->property(instr.propertyIndex); - if (v.isNull() || ((int)prop.type() != type && prop.userType() != type)) - VME_EXCEPTION(tr("Cannot assign value %1 to property %2").arg(primitive).arg(QString::fromUtf8(prop.name())), instr.line); - - void *a[] = { (void *)v.data(), 0, &status, &flags }; - QMetaObject::metacall(target, QMetaObject::WriteProperty, - instr.propertyIndex, a); - QML_END_INSTR(AssignCustomType) - - QML_BEGIN_INSTR(AssignSignalObject) - // XXX optimize - - QObject *assign = objects.pop(); - QObject *target = objects.top(); - int sigIdx = instr.signal; - const QString &pr = PRIMITIVES.at(sigIdx); - - QDeclarativeProperty prop(target, pr); - if (prop.type() & QDeclarativeProperty::SignalProperty) { - - QMetaMethod method = QDeclarativeMetaType::defaultMethod(assign); - if (method.signature() == 0) - VME_EXCEPTION(tr("Cannot assign object type %1 with no default method").arg(QString::fromLatin1(assign->metaObject()->className())), instr.line); - - if (!QMetaObject::checkConnectArgs(prop.method().signature(), method.signature())) - VME_EXCEPTION(tr("Cannot connect mismatched signal/slot %1 %vs. %2").arg(QString::fromLatin1(method.signature())).arg(QString::fromLatin1(prop.method().signature())), instr.line); - - QDeclarativePropertyPrivate::connect(target, prop.index(), assign, method.methodIndex()); - - } else { - VME_EXCEPTION(tr("Cannot assign an object to signal property %1").arg(pr), instr.line); - } - - - QML_END_INSTR(AssignSignalObject) - - QML_BEGIN_INSTR(StoreSignal) - QObject *target = objects.top(); - QObject *context = objects.at(objects.count() - 1 - instr.context); - - QMetaMethod signal = target->metaObject()->method(instr.signalIndex); - - QDeclarativeBoundSignal *bs = new QDeclarativeBoundSignal(target, signal, target); - QDeclarativeExpression *expr = - new QDeclarativeExpression(CTXT, context, DATAS.at(instr.value), true, COMP->name, instr.line, instr.column, *new QDeclarativeExpressionPrivate); - bs->setExpression(expr); - QML_END_INSTR(StoreSignal) - - QML_BEGIN_INSTR(StoreImportedScript) - CTXT->importedScripts << run(CTXT, SCRIPTS.at(instr.value)); - QML_END_INSTR(StoreImportedScript) - - QML_BEGIN_INSTR(StoreScriptString) - QObject *target = objects.top(); - QObject *scope = objects.at(objects.count() - 1 - instr.scope); - QDeclarativeScriptString ss; - ss.setContext(CTXT->asQDeclarativeContext()); - ss.setScopeObject(scope); - ss.setScript(PRIMITIVES.at(instr.value)); - ss.d.data()->bindingId = instr.bindingId; - ss.d.data()->lineNumber = instr.line; - ss.d.data()->columnNumber = instr.column; - - void *a[] = { &ss, 0, &status, &flags }; - QMetaObject::metacall(target, QMetaObject::WriteProperty, - instr.propertyIndex, a); - QML_END_INSTR(StoreScriptString) - - QML_BEGIN_INSTR(BeginObject) - QObject *target = objects.top(); - QDeclarativeParserStatus *status = reinterpret_cast<QDeclarativeParserStatus *>(reinterpret_cast<char *>(target) + instr.castValue); - parserStatus.push(status); -#ifdef QML_ENABLE_TRACE - Q_ASSERT(QObjectPrivate::get(target)->declarativeData); - parserStatusData.push(static_cast<QDeclarativeData *>(QObjectPrivate::get(target)->declarativeData)); -#endif - status->d = &parserStatus.top(); - - status->classBegin(); - QML_END_INSTR(BeginObject) - - QML_BEGIN_INSTR(InitV8Bindings) - CTXT->v8bindings = new QV8Bindings(&PROGRAMS[instr.programIndex], instr.line, CTXT); - QML_END_INSTR(InitV8Bindings) - - QML_BEGIN_INSTR(StoreBinding) - QObject *target = - objects.at(objects.count() - 1 - instr.owner); - QObject *context = - objects.at(objects.count() - 1 - instr.context); - - if (instr.isRoot && BINDINGSKIPLIST.testBit(instr.property.coreIndex)) - QML_NEXT_INSTR(StoreBinding); - - QDeclarativeBinding *bind = new QDeclarativeBinding(PRIMITIVES.at(instr.value), true, - context, CTXT, COMP->name, instr.line, - instr.column); - bindValues.push(bind); - bind->m_mePtr = &bindValues.top(); - bind->setTarget(target, instr.property, CTXT); - - typedef QDeclarativePropertyPrivate QDPP; - Q_ASSERT(bind->propertyIndex() == QDPP::bindingIndex(instr.property)); - Q_ASSERT(bind->object() == target); - - bind->addToObject(); - QML_END_INSTR(StoreBinding) - - QML_BEGIN_INSTR(StoreBindingOnAlias) - QObject *target = - objects.at(objects.count() - 1 - instr.owner); - QObject *context = - objects.at(objects.count() - 1 - instr.context); - - if (instr.isRoot && BINDINGSKIPLIST.testBit(instr.property.coreIndex)) - QML_NEXT_INSTR(StoreBindingOnAlias); - - QDeclarativeBinding *bind = new QDeclarativeBinding(PRIMITIVES.at(instr.value), true, - context, CTXT, COMP->name, instr.line, - instr.column); - bindValues.push(bind); - bind->m_mePtr = &bindValues.top(); - bind->setTarget(target, instr.property, CTXT); - - QDeclarativeAbstractBinding *old = - QDeclarativePropertyPrivate::setBindingNoEnable(target, instr.property.coreIndex, - instr.property.getValueTypeCoreIndex(), - bind); - if (old) { old->destroy(); } - QML_END_INSTR(StoreBindingOnAlias) - - QML_BEGIN_INSTR(StoreV4Binding) - QObject *target = - objects.at(objects.count() - 1 - instr.owner); - QObject *scope = - objects.at(objects.count() - 1 - instr.context); - - int property = instr.property; - if (instr.isRoot && BINDINGSKIPLIST.testBit(property & 0xFFFF)) - QML_NEXT_INSTR(StoreV4Binding); - - QDeclarativeAbstractBinding *binding = - CTXT->v4bindings->configBinding(instr.value, target, scope, property, - instr.line, instr.column); - bindValues.push(binding); - binding->m_mePtr = &bindValues.top(); - - Q_ASSERT(binding->propertyIndex() == property); - Q_ASSERT(binding->object() == target); - - binding->addToObject(); - QML_END_INSTR(StoreV4Binding) - - QML_BEGIN_INSTR(StoreV8Binding) - QObject *target = - objects.at(objects.count() - 1 - instr.owner); - QObject *scope = - objects.at(objects.count() - 1 - instr.context); - - if (instr.isRoot && BINDINGSKIPLIST.testBit(instr.property.coreIndex)) - QML_NEXT_INSTR(StoreV8Binding); - - QDeclarativeAbstractBinding *binding = CTXT->v8bindings->configBinding(target, scope, - &instr); - if (binding) { - bindValues.push(binding); - binding->m_mePtr = &bindValues.top(); - - typedef QDeclarativePropertyPrivate QDPP; - Q_ASSERT(binding->propertyIndex() == QDPP::bindingIndex(instr.property)); - Q_ASSERT(binding->object() == target); - - binding->addToObject(); - } - QML_END_INSTR(StoreV8Binding) - - QML_BEGIN_INSTR(StoreValueSource) - QObject *obj = objects.pop(); - QDeclarativePropertyValueSource *vs = reinterpret_cast<QDeclarativePropertyValueSource *>(reinterpret_cast<char *>(obj) + instr.castValue); - QObject *target = objects.at(objects.count() - 1 - instr.owner); - - obj->setParent(target); - vs->setTarget(QDeclarativePropertyPrivate::restore(target, instr.property, CTXT)); - QML_END_INSTR(StoreValueSource) - - QML_BEGIN_INSTR(StoreValueInterceptor) - QObject *obj = objects.pop(); - QDeclarativePropertyValueInterceptor *vi = reinterpret_cast<QDeclarativePropertyValueInterceptor *>(reinterpret_cast<char *>(obj) + instr.castValue); - QObject *target = objects.at(objects.count() - 1 - instr.owner); - QDeclarativeProperty prop = - QDeclarativePropertyPrivate::restore(target, instr.property, CTXT); - obj->setParent(target); - vi->setTarget(prop); - QDeclarativeVMEMetaObject *mo = static_cast<QDeclarativeVMEMetaObject *>((QMetaObject*)target->metaObject()); - mo->registerInterceptor(prop.index(), QDeclarativePropertyPrivate::valueTypeCoreIndex(prop), vi); - QML_END_INSTR(StoreValueInterceptor) - - QML_BEGIN_INSTR(StoreObjectQList) - QObject *assign = objects.pop(); - - const List &list = lists.top(); - list.qListProperty.append((QDeclarativeListProperty<void>*)&list.qListProperty, assign); - QML_END_INSTR(StoreObjectQList) - - QML_BEGIN_INSTR(AssignObjectList) - // This is only used for assigning interfaces - QObject *assign = objects.pop(); - const List &list = lists.top(); - - int type = list.type; - - void *ptr = 0; - - const char *iid = QDeclarativeMetaType::interfaceIId(type); - if (iid) - ptr = assign->qt_metacast(iid); - if (!ptr) - VME_EXCEPTION(tr("Cannot assign object to list"), instr.line); - - - list.qListProperty.append((QDeclarativeListProperty<void>*)&list.qListProperty, ptr); - QML_END_INSTR(AssignObjectList) - - QML_BEGIN_INSTR(StoreInterface) - QObject *assign = objects.pop(); - QObject *target = objects.top(); - CLEAN_PROPERTY(target, instr.propertyIndex); - - int coreIdx = instr.propertyIndex; - QMetaProperty prop = target->metaObject()->property(coreIdx); - int t = prop.userType(); - const char *iid = QDeclarativeMetaType::interfaceIId(t); - bool ok = false; - if (iid) { - void *ptr = assign->qt_metacast(iid); - if (ptr) { - void *a[] = { &ptr, 0, &status, &flags }; - QMetaObject::metacall(target, - QMetaObject::WriteProperty, - coreIdx, a); - ok = true; - } - } - - if (!ok) - VME_EXCEPTION(tr("Cannot assign object to interface property"), instr.line); - QML_END_INSTR(StoreInterface) - - QML_BEGIN_INSTR(FetchAttached) - QObject *target = objects.top(); - - QObject *qmlObject = qmlAttachedPropertiesObjectById(instr.id, target); - - if (!qmlObject) - VME_EXCEPTION(tr("Unable to create attached object"), instr.line); - - objects.push(qmlObject); - QML_END_INSTR(FetchAttached) - - QML_BEGIN_INSTR(FetchQList) - QObject *target = objects.top(); - - lists.push(List(instr.type)); - - void *a[1]; - a[0] = (void *)&(lists.top().qListProperty); - QMetaObject::metacall(target, QMetaObject::ReadProperty, - instr.property, a); - QML_END_INSTR(FetchQList) - - QML_BEGIN_INSTR(FetchObject) - QObject *target = objects.top(); - - QObject *obj = 0; - // NOTE: This assumes a cast to QObject does not alter the - // object pointer - void *a[1]; - a[0] = &obj; - QMetaObject::metacall(target, QMetaObject::ReadProperty, - instr.property, a); - - if (!obj) - VME_EXCEPTION(tr("Cannot set properties on %1 as it is null").arg(QString::fromUtf8(target->metaObject()->property(instr.property).name())), instr.line); - - objects.push(obj); - QML_END_INSTR(FetchObject) - - QML_BEGIN_INSTR(PopQList) - lists.pop(); - QML_END_INSTR(PopQList) - - QML_BEGIN_INSTR(Defer) - if (instr.deferCount) { - QObject *target = objects.top(); - QDeclarativeData *data = - QDeclarativeData::get(target, true); - COMP->addref(); - data->deferredComponent = COMP; - data->deferredIdx = INSTRUCTIONSTREAM - COMP->bytecode.constData(); - INSTRUCTIONSTREAM += instr.deferCount; - } - QML_END_INSTR(Defer) - - QML_BEGIN_INSTR(PopFetchedObject) - objects.pop(); - QML_END_INSTR(PopFetchedObject) - - QML_BEGIN_INSTR(FetchValueType) - QObject *target = objects.top(); - - if (instr.bindingSkipList != 0) { - // Possibly need to clear bindings - QDeclarativeData *targetData = QDeclarativeData::get(target); - if (targetData) { - QDeclarativeAbstractBinding *binding = - QDeclarativePropertyPrivate::binding(target, instr.property, -1); - - if (binding && binding->bindingType() != QDeclarativeAbstractBinding::ValueTypeProxy) { - QDeclarativePropertyPrivate::setBinding(target, instr.property, -1, 0); - binding->destroy(); - } else if (binding) { - QDeclarativeValueTypeProxyBinding *proxy = - static_cast<QDeclarativeValueTypeProxyBinding *>(binding); - proxy->removeBindings(instr.bindingSkipList); - } - } - } - - QDeclarativeValueType *valueHandler = ep->valueTypes[instr.type]; - valueHandler->read(target, instr.property); - objects.push(valueHandler); - QML_END_INSTR(FetchValueType) - - QML_BEGIN_INSTR(PopValueType) - QDeclarativeValueType *valueHandler = - static_cast<QDeclarativeValueType *>(objects.pop()); - QObject *target = objects.top(); - valueHandler->write(target, instr.property, QDeclarativePropertyPrivate::BypassInterceptor); - QML_END_INSTR(PopValueType) - -#ifdef QML_THREADED_VME_INTERPRETER - // nothing to do -#else - default: - qFatal("QDeclarativeCompiledData: Internal error - unknown instruction %d", genericInstr->common.instructionType); - break; - } - } -#endif - -exceptionExit: - Q_ASSERT(!states.isEmpty()); - Q_ASSERT(!errors->isEmpty()); - - reset(); - - return 0; - -normalExit: - Q_ASSERT(objects.count() == 1); - - QObject *rv = objects.top(); - - objects.deallocate(); - lists.deallocate(); - states.clear(); - - return rv; -} - -void QDeclarativeVME::reset() -{ - Q_ASSERT(!states.isEmpty() || objects.isEmpty()); - - QRecursionWatcher<QDeclarativeVME, &QDeclarativeVME::recursion> watcher(this); - - if (!objects.isEmpty() && !(states.at(0).flags & State::Deferred)) - delete objects.at(0); - - if (!rootContext.isNull()) - rootContext->activeVMEData = 0; - - // Remove the QDeclarativeParserStatus and QDeclarativeAbstractBinding back pointers - blank(parserStatus); - blank(bindValues); - - while (componentAttached) { - QDeclarativeComponentAttached *a = componentAttached; - a->rem(); - } - - engine = 0; - objects.deallocate(); - lists.deallocate(); - bindValues.deallocate(); - parserStatus.deallocate(); -#ifdef QML_ENABLE_TRACE - parserStatusData.deallocate(); -#endif - finalizeCallbacks.clear(); - states.clear(); - rootContext = 0; - creationContext = 0; -} - -// Must be called with a handle scope and context -void QDeclarativeScriptData::initialize(QDeclarativeEngine *engine) -{ - Q_ASSERT(m_program.IsEmpty()); - Q_ASSERT(engine); - Q_ASSERT(!hasEngine()); - - QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(engine); - QV8Engine *v8engine = ep->v8engine(); - - // If compilation throws an error, a surrounding v8::TryCatch will record it. - v8::Local<v8::Script> program = v8engine->qmlModeCompile(m_programSource.constData(), - m_programSource.length(), urlString, 1); - if (program.IsEmpty()) - return; - - m_program = qPersistentNew<v8::Script>(program); - m_programSource.clear(); // We don't need this anymore - - addToEngine(engine); - - addref(); -} - -v8::Persistent<v8::Object> QDeclarativeVME::run(QDeclarativeContextData *parentCtxt, QDeclarativeScriptData *script) -{ - if (script->m_loaded) - return qPersistentNew<v8::Object>(script->m_value); - - Q_ASSERT(parentCtxt && parentCtxt->engine); - QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(parentCtxt->engine); - QV8Engine *v8engine = ep->v8engine(); - - bool shared = script->pragmas & QDeclarativeScript::Object::ScriptBlock::Shared; - - QDeclarativeContextData *effectiveCtxt = parentCtxt; - if (shared) - effectiveCtxt = 0; - - // Create the script context if required - QDeclarativeContextData *ctxt = new QDeclarativeContextData; - ctxt->isInternal = true; - ctxt->isJSContext = true; - if (shared) - ctxt->isPragmaLibraryContext = true; - else - ctxt->isPragmaLibraryContext = parentCtxt->isPragmaLibraryContext; - ctxt->url = script->url; - ctxt->urlString = script->urlString; - - // For backward compatibility, if there are no imports, we need to use the - // imports from the parent context. See QTBUG-17518. - if (!script->importCache->isEmpty()) { - ctxt->imports = script->importCache; - } else if (effectiveCtxt) { - ctxt->imports = effectiveCtxt->imports; - ctxt->importedScripts = effectiveCtxt->importedScripts; - for (int ii = 0; ii < ctxt->importedScripts.count(); ++ii) - ctxt->importedScripts[ii] = qPersistentNew<v8::Object>(ctxt->importedScripts[ii]); - } - - if (ctxt->imports) { - ctxt->imports->addref(); - } - - if (effectiveCtxt) { - ctxt->setParent(effectiveCtxt, true); - } else { - ctxt->engine = parentCtxt->engine; // Fix for QTBUG-21620 - } - - for (int ii = 0; ii < script->scripts.count(); ++ii) { - ctxt->importedScripts << run(ctxt, script->scripts.at(ii)->scriptData()); - } - - v8::HandleScope handle_scope; - v8::Context::Scope scope(v8engine->context()); - - v8::TryCatch try_catch; - if (!script->isInitialized()) - script->initialize(parentCtxt->engine); - - v8::Local<v8::Object> qmlglobal = v8engine->qmlScope(ctxt, 0); - - if (!script->m_program.IsEmpty()) { - script->m_program->Run(qmlglobal); - } else { - // Compilation failed. - Q_ASSERT(try_catch.HasCaught()); - } - - v8::Persistent<v8::Object> rv; - - if (try_catch.HasCaught()) { - v8::Local<v8::Message> message = try_catch.Message(); - if (!message.IsEmpty()) { - QDeclarativeError error; - QDeclarativeExpressionPrivate::exceptionToError(message, error); - ep->warning(error); - } - } - - rv = qPersistentNew<v8::Object>(qmlglobal); - if (shared) { - script->m_value = qPersistentNew<v8::Object>(qmlglobal); - script->m_loaded = true; - } - - return rv; -} - -#ifdef QML_THREADED_VME_INTERPRETER -void **QDeclarativeVME::instructionJumpTable() -{ - static void **jumpTable = 0; - if (!jumpTable) { - QDeclarativeVME dummy; - QDeclarativeVME::Interrupt i; - dummy.run(0, i, &jumpTable); - } - return jumpTable; -} -#endif - -QDeclarativeContextData *QDeclarativeVME::complete(const Interrupt &interrupt) -{ - Q_ASSERT(engine || - (bindValues.isEmpty() && - parserStatus.isEmpty() && - componentAttached == 0 && - rootContext.isNull() && - finalizeCallbacks.isEmpty())); - - if (!engine) - return 0; - - QDeclarativeTrace trace("VME Complete"); -#ifdef QML_ENABLE_TRACE - trace.addDetail("URL", rootComponent->url); -#endif - - ActiveVMERestorer restore(this, QDeclarativeEnginePrivate::get(engine)); - QRecursionWatcher<QDeclarativeVME, &QDeclarativeVME::recursion> watcher(this); - - { - QDeclarativeTrace trace("VME Binding Enable"); - trace.event("begin binding eval"); - while (!bindValues.isEmpty()) { - QDeclarativeAbstractBinding *b = bindValues.pop(); - - if(b) { - b->m_mePtr = 0; - b->setEnabled(true, QDeclarativePropertyPrivate::BypassInterceptor | - QDeclarativePropertyPrivate::DontRemoveBinding); - } - - if (watcher.hasRecursed() || interrupt.shouldInterrupt()) - return 0; - } - bindValues.deallocate(); - } - - { - QDeclarativeTrace trace("VME Component Complete"); - while (!parserStatus.isEmpty()) { - QDeclarativeParserStatus *status = parserStatus.pop(); -#ifdef QML_ENABLE_TRACE - QDeclarativeData *data = parserStatusData.pop(); -#endif - - if (status && status->d) { - status->d = 0; -#ifdef QML_ENABLE_TRACE - QDeclarativeTrace trace("Component complete"); - trace.addDetail("URL", data->outerContext->url); - trace.addDetail("Line", data->lineNumber); -#endif - status->componentComplete(); - } - - if (watcher.hasRecursed() || interrupt.shouldInterrupt()) - return 0; - } - parserStatus.deallocate(); - } - - { - QDeclarativeTrace trace("VME Finalize Callbacks"); - for (int ii = 0; ii < finalizeCallbacks.count(); ++ii) { - QDeclarativeEnginePrivate::FinalizeCallback callback = finalizeCallbacks.at(ii); - QObject *obj = callback.first; - if (obj) { - void *args[] = { 0 }; - QMetaObject::metacall(obj, QMetaObject::InvokeMetaMethod, callback.second, args); - } - if (watcher.hasRecursed()) - return 0; - } - finalizeCallbacks.clear(); - } - - { - QDeclarativeTrace trace("VME Component.onCompleted Callbacks"); - while (componentAttached) { - QDeclarativeComponentAttached *a = componentAttached; - a->rem(); - QDeclarativeData *d = QDeclarativeData::get(a->parent()); - Q_ASSERT(d); - Q_ASSERT(d->context); - a->add(&d->context->componentAttached); - emit a->completed(); - - if (watcher.hasRecursed() || interrupt.shouldInterrupt()) - return 0; - } - } - - QDeclarativeContextData *rv = rootContext; - - reset(); - - if (rv) rv->activeVMEData = data; - - return rv; -} - -void QDeclarativeVME::blank(QFiniteStack<QDeclarativeAbstractBinding *> &bs) -{ - for (int ii = 0; ii < bs.count(); ++ii) { - QDeclarativeAbstractBinding *b = bs.at(ii); - if (b) b->m_mePtr = 0; - } -} - -void QDeclarativeVME::blank(QFiniteStack<QDeclarativeParserStatus *> &pss) -{ - for (int ii = 0; ii < pss.count(); ++ii) { - QDeclarativeParserStatus *ps = pss.at(ii); - if(ps) ps->d = 0; - } -} - -QDeclarativeVMEGuard::QDeclarativeVMEGuard() -: m_objectCount(0), m_objects(0), m_contextCount(0), m_contexts(0) -{ -} - -QDeclarativeVMEGuard::~QDeclarativeVMEGuard() -{ - clear(); -} - -void QDeclarativeVMEGuard::guard(QDeclarativeVME *vme) -{ - clear(); - - m_objectCount = vme->objects.count(); - m_objects = new QDeclarativeGuard<QObject>[m_objectCount]; - for (int ii = 0; ii < m_objectCount; ++ii) - m_objects[ii] = vme->objects[ii]; - - m_contextCount = (vme->rootContext.isNull()?0:1) + vme->states.count(); - m_contexts = new QDeclarativeGuardedContextData[m_contextCount]; - for (int ii = 0; ii < vme->states.count(); ++ii) - m_contexts[ii] = vme->states.at(ii).context; - if (!vme->rootContext.isNull()) - m_contexts[m_contextCount - 1] = vme->rootContext.contextData(); -} - -void QDeclarativeVMEGuard::clear() -{ - delete [] m_objects; - delete [] m_contexts; - - m_objectCount = 0; - m_objects = 0; - m_contextCount = 0; - m_contexts = 0; -} - -bool QDeclarativeVMEGuard::isOK() const -{ - for (int ii = 0; ii < m_objectCount; ++ii) - if (m_objects[ii].isNull()) - return false; - - for (int ii = 0; ii < m_contextCount; ++ii) - if (m_contexts[ii].isNull()) - return false; - - return true; -} - -QT_END_NAMESPACE |