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qqmlvme.cpp
1370 lines (1120 loc) · 48.3 KB
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qqmlvme.cpp
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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtQml 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 "qqmlvme_p.h"
#include "qqmlcompiler_p.h"
#include "qqmlboundsignal_p.h"
#include "qqmlstringconverters_p.h"
#include <private/qmetaobjectbuilder_p.h>
#include <private/qfastmetabuilder_p.h>
#include "qqmldata_p.h"
#include "qqml.h"
#include "qqmlcustomparser_p.h"
#include "qqmlengine.h"
#include "qqmlcontext.h"
#include "qqmlcomponent.h"
#include "qqmlcomponentattached_p.h"
#include "qqmlbinding_p.h"
#include "qqmlengine_p.h"
#include "qqmlcomponent_p.h"
#include "qqmlvmemetaobject_p.h"
#include "qqmlcontext_p.h"
#include <private/qv4bindings_p.h>
#include <private/qv8bindings_p.h>
#include "qqmlglobal_p.h"
#include <private/qfinitestack_p.h>
#include "qqmlscriptstring.h"
#include "qqmlscriptstring_p.h"
#include "qqmlpropertyvalueinterceptor_p.h"
#include "qqmlvaluetypeproxybinding_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 <QtQml/qjsvalue.h>
QT_BEGIN_NAMESPACE
using namespace QQmlVMETypes;
#define VME_EXCEPTION(desc, line) \
{ \
QQmlError error; \
error.setDescription(desc.trimmed()); \
error.setLine(line); \
error.setUrl(COMP->url); \
*errors << error; \
goto exceptionExit; \
}
void QQmlVME::init(QQmlContextData *ctxt, QQmlCompiledData *comp, int start,
QQmlContextData *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 QQmlInstruction 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 QQmlVME::initDeferred(QObject *object)
{
QQmlData *data = QQmlData::get(object);
if (!data || !data->context || !data->deferredComponent)
return false;
QQmlContextData *ctxt = data->context;
QQmlCompiledData *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 QQmlInstruction 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(QQmlVME *me, QQmlEnginePrivate *ep)
: ep(ep), oldVME(ep->activeVME) { ep->activeVME = me; }
~ActiveVMERestorer() { ep->activeVME = oldVME; }
QQmlEnginePrivate *ep;
QQmlVME *oldVME;
};
}
QObject *QQmlVME::execute(QList<QQmlError> *errors, const Interrupt &interrupt)
{
Q_ASSERT(states.count() >= 1);
#ifdef QML_ENABLE_TRACE
QQmlTrace trace("VME Execute");
trace.addDetail("URL", rootComponent->url);
#endif
QQmlEnginePrivate *ep = QQmlEnginePrivate::get(states.at(0).context->engine);
ActiveVMERestorer restore(this, ep);
QObject *rv = run(errors, interrupt);
return rv;
}
inline bool fastHasBinding(QObject *o, int index)
{
QQmlData *ddata = static_cast<QQmlData *>(QObjectPrivate::get(o)->declarativeData);
return ddata && (ddata->bindingBitsSize > index) &&
(ddata->bindingBits[index / 32] & (1 << (index % 32)));
}
static void removeBindingOnProperty(QObject *o, int index)
{
QQmlAbstractBinding *binding = QQmlPropertyPrivate::setBinding(o, index, -1, 0);
if (binding) binding->destroy();
}
static QVariant variantFromString(const QString &string)
{
return QQmlStringConverters::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 QQmlInstructionMeta<(int)QQmlInstruction::I>::DataType &instr = QQmlInstructionMeta<(int)QQmlInstruction::I>::data(*genericInstr); \
INSTRUCTIONSTREAM += QQmlInstructionMeta<(int)QQmlInstruction::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 QQmlInstruction *>(INSTRUCTIONSTREAM); \
goto *genericInstr->common.code; \
}
# define QML_END_INSTR(I) } \
if (watcher.hasRecursed()) return 0; \
genericInstr = reinterpret_cast<const QQmlInstruction *>(INSTRUCTIONSTREAM); \
if (interrupt.shouldInterrupt()) return 0; \
goto *genericInstr->common.code;
#else
# define QML_BEGIN_INSTR(I) \
case QQmlInstruction::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()); \
QQmlVMEMetaObject *vmemo = static_cast<QQmlVMEMetaObject *>(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 *QQmlVME::run(QList<QQmlError> *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);
QQmlEngine *engine = states.at(0).context->engine;
QQmlEnginePrivate *ep = QQmlEnginePrivate::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
QQmlPropertyPrivate::WriteFlags flags = QQmlPropertyPrivate::BypassInterceptor |
QQmlPropertyPrivate::RemoveBindingOnAliasWrite;
QRecursionWatcher<QQmlVME, &QQmlVME::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 QQmlInstruction *genericInstr = reinterpret_cast<const QQmlInstruction *>(INSTRUCTIONSTREAM);
goto *genericInstr->common.code;
#else
for (;;) {
const QQmlInstruction *genericInstr = reinterpret_cast<const QQmlInstruction *>(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);
QQmlContextData *parentCtxt = CTXT;
CTXT = new QQmlContextData;
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 QQmlCompiledData::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();
QQmlData *ddata = QQmlData::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);
QQmlContextData *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 QQmlCompiledData::TypeReference &type = TYPES.at(instr.type);
Q_ASSERT(type.type);
QObject *o = 0;
void *memory = 0;
type.type->create(&o, &memory, sizeof(QQmlData));
QQmlData *ddata = new (memory) QQmlData;
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);
QQmlContextData *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) {
QQmlCustomParser *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
QQml_setParent_noEvent(o, parent);
}
objects.push(o);
QML_END_INSTR(CreateCppObject)
QML_BEGIN_INSTR(CreateSimpleObject)
QObject *o = (QObject *)operator new(instr.typeSize + sizeof(QQmlData));
::memset(o, 0, instr.typeSize + sizeof(QQmlData));
instr.create(o);
QQmlData *ddata = (QQmlData *)(((const char *)o) + instr.typeSize);
const QQmlCompiledData::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();
QQml_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)
QQmlComponent *qcomp =
new QQmlComponent(CTXT->engine, COMP, INSTRUCTIONSTREAM - COMP->bytecode.constData(),
objects.isEmpty() ? 0 : objects.top());
QQmlData *ddata = QQmlData::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;
QQmlComponentPrivate::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 QQmlVMEMetaData *data =
(const QQmlVMEMetaData *)DATAS.at(instr.aliasData).constData();
(void)new QQmlVMEMetaObject(target, &mo, data, COMP);
if (instr.propertyCache != -1) {
QQmlData *ddata = QQmlData::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;
QQmlMetaType::StringConverter converter = QQmlMetaType::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);
QQmlProperty prop(target, pr);
if (prop.type() & QQmlProperty::SignalProperty) {
QMetaMethod method = QQmlMetaType::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);
QQmlPropertyPrivate::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);
QQmlBoundSignal *bs = new QQmlBoundSignal(target, signal, target);
QQmlExpression *expr =
new QQmlExpression(CTXT, context, DATAS.at(instr.value), true, COMP->name, instr.line, instr.column, *new QQmlExpressionPrivate);
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);
QQmlScriptString ss;
ss.setContext(CTXT->asQQmlContext());
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();
QQmlParserStatus *status = reinterpret_cast<QQmlParserStatus *>(reinterpret_cast<char *>(target) + instr.castValue);
parserStatus.push(status);
#ifdef QML_ENABLE_TRACE
Q_ASSERT(QObjectPrivate::get(target)->declarativeData);
parserStatusData.push(static_cast<QQmlData *>(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);
QQmlBinding *bind = new QQmlBinding(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 QQmlPropertyPrivate 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);
QQmlBinding *bind = new QQmlBinding(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);
QQmlAbstractBinding *old =
QQmlPropertyPrivate::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);
QQmlAbstractBinding *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 & 0xFF00FFFF));
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);
QQmlAbstractBinding *binding = CTXT->v8bindings->configBinding(target, scope,
&instr);
if (binding) {
bindValues.push(binding);
binding->m_mePtr = &bindValues.top();
typedef QQmlPropertyPrivate 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();
QQmlPropertyValueSource *vs = reinterpret_cast<QQmlPropertyValueSource *>(reinterpret_cast<char *>(obj) + instr.castValue);
QObject *target = objects.at(objects.count() - 1 - instr.owner);
obj->setParent(target);
vs->setTarget(QQmlPropertyPrivate::restore(target, instr.property, CTXT));
QML_END_INSTR(StoreValueSource)
QML_BEGIN_INSTR(StoreValueInterceptor)
QObject *obj = objects.pop();
QQmlPropertyValueInterceptor *vi = reinterpret_cast<QQmlPropertyValueInterceptor *>(reinterpret_cast<char *>(obj) + instr.castValue);
QObject *target = objects.at(objects.count() - 1 - instr.owner);
QQmlProperty prop =
QQmlPropertyPrivate::restore(target, instr.property, CTXT);
obj->setParent(target);
vi->setTarget(prop);
QQmlVMEMetaObject *mo = static_cast<QQmlVMEMetaObject *>((QMetaObject*)target->metaObject());
mo->registerInterceptor(prop.index(), QQmlPropertyPrivate::valueTypeCoreIndex(prop), vi);
QML_END_INSTR(StoreValueInterceptor)
QML_BEGIN_INSTR(StoreObjectQList)
QObject *assign = objects.pop();
const List &list = lists.top();
list.qListProperty.append((QQmlListProperty<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 = QQmlMetaType::interfaceIId(type);
if (iid)
ptr = assign->qt_metacast(iid);
if (!ptr)
VME_EXCEPTION(tr("Cannot assign object to list"), instr.line);
list.qListProperty.append((QQmlListProperty<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 = QQmlMetaType::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();
QQmlData *data =
QQmlData::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
QQmlData *targetData = QQmlData::get(target);
if (targetData) {
QQmlAbstractBinding *binding =
QQmlPropertyPrivate::binding(target, instr.property, -1);
if (binding && binding->bindingType() != QQmlAbstractBinding::ValueTypeProxy) {
QQmlPropertyPrivate::setBinding(target, instr.property, -1, 0);
binding->destroy();
} else if (binding) {
QQmlValueTypeProxyBinding *proxy =
static_cast<QQmlValueTypeProxyBinding *>(binding);
proxy->removeBindings(instr.bindingSkipList);
}
}
}
QQmlValueType *valueHandler = ep->valueTypes[instr.type];