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Diffstat (limited to 'src/script/bridge/qscriptdeclarativeclass.cpp')
| -rw-r--r-- | src/script/bridge/qscriptdeclarativeclass.cpp | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/src/script/bridge/qscriptdeclarativeclass.cpp b/src/script/bridge/qscriptdeclarativeclass.cpp new file mode 100644 index 0000000..b5d9bf5 --- /dev/null +++ b/src/script/bridge/qscriptdeclarativeclass.cpp @@ -0,0 +1,356 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qscriptdeclarativeclass_p.h" +#include "qscriptdeclarativeobject_p.h" +#include "qscriptobject_p.h" +#include <QtScript/qscriptstring.h> +#include <QtScript/qscriptengine.h> +#include <QtScript/qscriptengineagent.h> +#include <private/qscriptengine_p.h> +#include <private/qscriptvalue_p.h> +#include <private/qscriptqobject_p.h> +#include <private/qscriptactivationobject_p.h> +#include <QtCore/qstringlist.h> + +QT_BEGIN_NAMESPACE + +QScriptDeclarativeClass::PersistentIdentifier::PersistentIdentifier() +{ + new (&d) JSC::Identifier(); +} + +QScriptDeclarativeClass::PersistentIdentifier::~PersistentIdentifier() +{ + ((JSC::Identifier &)d).JSC::Identifier::~Identifier(); +} + +QScriptDeclarativeClass::PersistentIdentifier::PersistentIdentifier(const PersistentIdentifier &other) +{ + identifier = other.identifier; + new (&d) JSC::Identifier((JSC::Identifier &)(other.d)); +} + +QScriptDeclarativeClass::PersistentIdentifier & +QScriptDeclarativeClass::PersistentIdentifier::operator=(const PersistentIdentifier &other) +{ + identifier = other.identifier; + ((JSC::Identifier &)d) = (JSC::Identifier &)(other.d); + return *this; +} + +QScriptDeclarativeClass::QScriptDeclarativeClass(QScriptEngine *engine) +: d_ptr(new QScriptDeclarativeClassPrivate) +{ + Q_ASSERT(sizeof(void*) == sizeof(JSC::Identifier)); + d_ptr->q_ptr = this; + d_ptr->engine = engine; +} + +QScriptValue QScriptDeclarativeClass::newObject(QScriptEngine *engine, + QScriptDeclarativeClass *scriptClass, + Object *object) +{ + Q_ASSERT(engine); + Q_ASSERT(scriptClass); + + QScriptEnginePrivate *p = static_cast<QScriptEnginePrivate *>(QObjectPrivate::get(engine)); + + JSC::ExecState* exec = p->currentFrame; + QScriptObject *result = new (exec) QScriptObject(p->scriptObjectStructure); + result->setDelegate(new QScript::DeclarativeObjectDelegate(scriptClass, object)); + return p->scriptValueFromJSCValue(result); +} + +QScriptDeclarativeClass *QScriptDeclarativeClass::scriptClass(const QScriptValue &v) +{ + QScriptValuePrivate *d = QScriptValuePrivate::get(v); + if (!d || !d->isJSC() || !d->jscValue.inherits(&QScriptObject::info)) + return 0; + QScriptObject *scriptObject = static_cast<QScriptObject*>(JSC::asObject(d->jscValue)); + QScriptObjectDelegate *delegate = scriptObject->delegate(); + if (!delegate || (delegate->type() != QScriptObjectDelegate::DeclarativeClassObject)) + return 0; + return static_cast<QScript::DeclarativeObjectDelegate*>(delegate)->scriptClass(); +} + +QScriptDeclarativeClass::Object *QScriptDeclarativeClass::object(const QScriptValue &v) +{ + QScriptValuePrivate *d = QScriptValuePrivate::get(v); + if (!d || !d->isJSC() || !d->jscValue.inherits(&QScriptObject::info)) + return 0; + QScriptObject *scriptObject = static_cast<QScriptObject*>(JSC::asObject(d->jscValue)); + QScriptObjectDelegate *delegate = scriptObject->delegate(); + if (!delegate || (delegate->type() != QScriptObjectDelegate::DeclarativeClassObject)) + return 0; + return static_cast<QScript::DeclarativeObjectDelegate*>(delegate)->object(); +} + +QScriptValue QScriptDeclarativeClass::function(const QScriptValue &v, const Identifier &name) +{ + QScriptValuePrivate *d = QScriptValuePrivate::get(v); + + if (!d->isObject()) + return QScriptValue(); + + JSC::ExecState *exec = d->engine->currentFrame; + JSC::JSObject *object = d->jscValue.getObject(); + JSC::PropertySlot slot(const_cast<JSC::JSObject*>(object)); + JSC::JSValue result; + + JSC::Identifier id(exec, (JSC::UString::Rep *)name); + + if (const_cast<JSC::JSObject*>(object)->getOwnPropertySlot(exec, id, slot)) { + result = slot.getValue(exec, id); + if (QScript::isFunction(result)) + return d->engine->scriptValueFromJSCValue(result); + } + + return QScriptValue(); +} + +QScriptValue QScriptDeclarativeClass::property(const QScriptValue &v, const Identifier &name) +{ + QScriptValuePrivate *d = QScriptValuePrivate::get(v); + + if (!d->isObject()) + return QScriptValue(); + + JSC::ExecState *exec = d->engine->currentFrame; + JSC::JSObject *object = d->jscValue.getObject(); + JSC::PropertySlot slot(const_cast<JSC::JSObject*>(object)); + JSC::JSValue result; + + JSC::Identifier id(exec, (JSC::UString::Rep *)name); + + if (const_cast<JSC::JSObject*>(object)->getOwnPropertySlot(exec, id, slot)) { + result = slot.getValue(exec, id); + return d->engine->scriptValueFromJSCValue(result); + } + + return QScriptValue(); +} + +/* +Returns the scope chain entry at \a index. If index is less than 0, returns +entries starting at the end. For example, scopeChainValue(context, -1) will return +the value last in the scope chain. +*/ +QScriptValue QScriptDeclarativeClass::scopeChainValue(QScriptContext *context, int index) +{ + context->activationObject(); //ensure the creation of the normal scope for native context + const JSC::CallFrame *frame = QScriptEnginePrivate::frameForContext(context); + QScriptEnginePrivate *engine = QScript::scriptEngineFromExec(frame); + + JSC::ScopeChainNode *node = frame->scopeChain(); + JSC::ScopeChainIterator it(node); + + if (index < 0) { + int count = 0; + for (it = node->begin(); it != node->end(); ++it) + ++count; + + index = qAbs(index); + if (index > count) + return QScriptValue(); + else + index = count - index; + } + + for (it = node->begin(); it != node->end(); ++it) { + + if (index == 0) { + + JSC::JSObject *object = *it; + if (!object) return QScriptValue(); + + if (object->inherits(&QScript::QScriptActivationObject::info) + && (static_cast<QScript::QScriptActivationObject*>(object)->delegate() != 0)) { + // Return the object that property access is being delegated to + object = static_cast<QScript::QScriptActivationObject*>(object)->delegate(); + } + return engine->scriptValueFromJSCValue(object); + + } else { + --index; + } + + } + + return QScriptValue(); +} + +/*! + Enters a new execution context and returns the associated + QScriptContext object. + + Once you are done with the context, you should call popContext() to + restore the old context. + + By default, the `this' object of the new context is the Global Object. + The context's \l{QScriptContext::callee()}{callee}() will be invalid. + + Unlike pushContext(), the default scope chain is reset to include + only the global object and the QScriptContext's activation object. + + \sa QScriptEngine::popContext() +*/ +QScriptContext * QScriptDeclarativeClass::pushCleanContext(QScriptEngine *engine) +{ + if (!engine) + return 0; + + QScriptEnginePrivate *d = QScriptEnginePrivate::get(engine); + + JSC::CallFrame* newFrame = d->pushContext(d->currentFrame, + d->currentFrame->globalData().dynamicGlobalObject, + JSC::ArgList(), /*callee = */0, false, true); + + if (engine->agent()) + engine->agent()->contextPush(); + + return d->contextForFrame(newFrame); +} + +QScriptDeclarativeClass::~QScriptDeclarativeClass() +{ +} + +QScriptEngine *QScriptDeclarativeClass::engine() const +{ + return d_ptr->engine; +} + +QScriptDeclarativeClass::PersistentIdentifier +QScriptDeclarativeClass::createPersistentIdentifier(const QString &str) +{ + QScriptEnginePrivate *p = + static_cast<QScriptEnginePrivate *>(QObjectPrivate::get(d_ptr->engine)); + JSC::ExecState* exec = p->currentFrame; + + PersistentIdentifier rv(true); + new (&rv.d) JSC::Identifier(exec, (UChar *)str.constData(), str.size()); + rv.identifier = (void *)((JSC::Identifier &)rv.d).ustring().rep(); + return rv; +} + +QScriptDeclarativeClass::PersistentIdentifier +QScriptDeclarativeClass::createPersistentIdentifier(const Identifier &id) +{ + QScriptEnginePrivate *p = + static_cast<QScriptEnginePrivate *>(QObjectPrivate::get(d_ptr->engine)); + JSC::ExecState* exec = p->currentFrame; + + PersistentIdentifier rv(true); + new (&rv.d) JSC::Identifier(exec, (JSC::UString::Rep *)id); + rv.identifier = (void *)((JSC::Identifier &)rv.d).ustring().rep(); + return rv; +} + +QString QScriptDeclarativeClass::toString(const Identifier &identifier) +{ + JSC::UString::Rep *r = (JSC::UString::Rep *)identifier; + return QString((QChar *)r->data(), r->size()); +} + +quint32 QScriptDeclarativeClass::toArrayIndex(const Identifier &identifier, bool *ok) +{ + JSC::UString::Rep *r = (JSC::UString::Rep *)identifier; + JSC::UString s(r); + return s.toArrayIndex(ok); +} + +QScriptClass::QueryFlags +QScriptDeclarativeClass::queryProperty(Object *object, const Identifier &name, + QScriptClass::QueryFlags flags) +{ + Q_UNUSED(object); + Q_UNUSED(name); + Q_UNUSED(flags); + return 0; +} + +QScriptValue QScriptDeclarativeClass::property(Object *object, const Identifier &name) +{ + Q_UNUSED(object); + Q_UNUSED(name); + return QScriptValue(); +} + +void QScriptDeclarativeClass::setProperty(Object *object, const Identifier &name, + const QScriptValue &value) +{ + Q_UNUSED(object); + Q_UNUSED(name); + Q_UNUSED(value); +} + +QScriptValue::PropertyFlags +QScriptDeclarativeClass::propertyFlags(Object *object, const Identifier &name) +{ + Q_UNUSED(object); + Q_UNUSED(name); + return 0; +} + +QStringList QScriptDeclarativeClass::propertyNames(Object *object) +{ + Q_UNUSED(object); + return QStringList(); +} + +QObject *QScriptDeclarativeClass::toQObject(Object *, bool *ok) +{ + if (ok) *ok = false; + return 0; +} + +QVariant QScriptDeclarativeClass::toVariant(Object *, bool *ok) +{ + if (ok) *ok = false; + return QVariant(); +} + +QScriptContext *QScriptDeclarativeClass::context() const +{ + return d_ptr->context; +} + |