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Diffstat (limited to 'src/declarative/qml/v8/qjsvalue_impl_p.h')
| -rw-r--r-- | src/declarative/qml/v8/qjsvalue_impl_p.h | 995 |
1 files changed, 0 insertions, 995 deletions
diff --git a/src/declarative/qml/v8/qjsvalue_impl_p.h b/src/declarative/qml/v8/qjsvalue_impl_p.h deleted file mode 100644 index 0b0cd0759a..0000000000 --- a/src/declarative/qml/v8/qjsvalue_impl_p.h +++ /dev/null @@ -1,995 +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. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -// -// W A R N I N G -// ------------- -// -// This file is not part of the Qt API. It exists purely as an -// implementation detail. This header file may change from version to -// version without notice, or even be removed. -// -// We mean it. -// - -#ifndef QJSVALUE_IMPL_P_H -#define QJSVALUE_IMPL_P_H - -#include "qjsconverter_p.h" -#include "qjsvalue_p.h" -#include "qv8engine_p.h" -#include "qscriptisolate_p.h" - -QT_BEGIN_NAMESPACE - -QJSValuePrivate* QJSValuePrivate::get(const QJSValue& q) { Q_ASSERT(q.d_ptr.data()); return q.d_ptr.data(); } - -QJSValue QJSValuePrivate::get(const QJSValuePrivate* d) -{ - Q_ASSERT(d); - return QJSValue(const_cast<QJSValuePrivate*>(d)); -} - -QJSValue QJSValuePrivate::get(QScriptPassPointer<QJSValuePrivate> d) -{ - Q_ASSERT(d); - return QJSValue(d); -} - -QJSValue QJSValuePrivate::get(QJSValuePrivate* d) -{ - Q_ASSERT(d); - return QJSValue(d); -} - -QJSValuePrivate::QJSValuePrivate(bool value) - : m_engine(0), m_state(CBool), u(value) -{ -} - -QJSValuePrivate::QJSValuePrivate(int value) - : m_engine(0), m_state(CNumber), u(value) -{ -} - -QJSValuePrivate::QJSValuePrivate(uint value) - : m_engine(0), m_state(CNumber), u(value) -{ -} - -QJSValuePrivate::QJSValuePrivate(double value) - : m_engine(0), m_state(CNumber), u(value) -{ -} - -QJSValuePrivate::QJSValuePrivate(const QString& value) - : m_engine(0), m_state(CString), u(new QString(value)) -{ -} - -QJSValuePrivate::QJSValuePrivate(QJSValue::SpecialValue value) - : m_engine(0), m_state(value == QJSValue::NullValue ? CNull : CUndefined) -{ -} - -QJSValuePrivate::QJSValuePrivate(QV8Engine* engine, bool value) - : m_engine(engine), m_state(JSValue) -{ - Q_ASSERT(engine); - v8::HandleScope handleScope; - m_value = v8::Persistent<v8::Value>::New(m_engine->makeJSValue(value)); - m_engine->registerValue(this); -} - -QJSValuePrivate::QJSValuePrivate(QV8Engine* engine, int value) - : m_engine(engine), m_state(JSValue) -{ - Q_ASSERT(engine); - v8::HandleScope handleScope; - m_value = v8::Persistent<v8::Value>::New(m_engine->makeJSValue(value)); - m_engine->registerValue(this); -} - -QJSValuePrivate::QJSValuePrivate(QV8Engine* engine, uint value) - : m_engine(engine), m_state(JSValue) -{ - Q_ASSERT(engine); - v8::HandleScope handleScope; - m_value = v8::Persistent<v8::Value>::New(m_engine->makeJSValue(value)); - m_engine->registerValue(this); -} - -QJSValuePrivate::QJSValuePrivate(QV8Engine* engine, double value) - : m_engine(engine), m_state(JSValue) -{ - Q_ASSERT(engine); - v8::HandleScope handleScope; - m_value = v8::Persistent<v8::Value>::New(m_engine->makeJSValue(value)); - m_engine->registerValue(this); -} - -QJSValuePrivate::QJSValuePrivate(QV8Engine* engine, const QString& value) - : m_engine(engine), m_state(JSValue) -{ - Q_ASSERT(engine); - v8::HandleScope handleScope; - m_value = v8::Persistent<v8::Value>::New(m_engine->makeJSValue(value)); - m_engine->registerValue(this); -} - -QJSValuePrivate::QJSValuePrivate(QV8Engine* engine, QJSValue::SpecialValue value) - : m_engine(engine), m_state(JSValue) -{ - Q_ASSERT(engine); - v8::HandleScope handleScope; - m_value = v8::Persistent<v8::Value>::New(m_engine->makeJSValue(value)); - m_engine->registerValue(this); -} - -QJSValuePrivate::QJSValuePrivate(QV8Engine *engine, v8::Handle<v8::Value> value) - : m_engine(engine), m_state(JSValue), m_value(v8::Persistent<v8::Value>::New(value)) -{ - Q_ASSERT(engine); - // It shouldn't happen, v8 shows errors by returning an empty handler. This is important debug - // information and it can't be simply ignored. - Q_ASSERT(!value.IsEmpty()); - m_engine->registerValue(this); -} - -QJSValuePrivate::~QJSValuePrivate() -{ - if (isJSBased()) { - m_engine->unregisterValue(this); - QScriptIsolate api(m_engine); - m_value.Dispose(); - } else if (isStringBased()) { - delete u.m_string; - } -} - -bool QJSValuePrivate::toBool() const -{ - switch (m_state) { - case JSValue: - { - v8::HandleScope scope; - return m_value->ToBoolean()->Value(); - } - case CNumber: - return !(qIsNaN(u.m_number) || !u.m_number); - case CBool: - return u.m_bool; - case CNull: - case CUndefined: - return false; - case CString: - return u.m_string->length(); - } - - Q_ASSERT_X(false, "toBool()", "Not all states are included in the previous switch statement."); - return false; // Avoid compiler warning. -} - -double QJSValuePrivate::toNumber() const -{ - switch (m_state) { - case JSValue: - { - v8::HandleScope scope; - return m_value->ToNumber()->Value(); - } - case CNumber: - return u.m_number; - case CBool: - return u.m_bool ? 1 : 0; - case CNull: - case CUndefined: - return qQNaN(); - case CString: - bool ok; - double result = u.m_string->toDouble(&ok); - if (ok) - return result; - result = u.m_string->toInt(&ok, 0); // Try other bases. - if (ok) - return result; - if (*u.m_string == QLatin1String("Infinity")) - return qInf(); - if (*u.m_string == QLatin1String("-Infinity")) - return -qInf(); - return u.m_string->length() ? qQNaN() : 0; - } - - Q_ASSERT_X(false, "toNumber()", "Not all states are included in the previous switch statement."); - return 0; // Avoid compiler warning. -} - -QString QJSValuePrivate::toString() const -{ - switch (m_state) { - case CBool: - return u.m_bool ? QString::fromLatin1("true") : QString::fromLatin1("false"); - case CString: - return *u.m_string; - case CNumber: - return QJSConverter::toString(u.m_number); - case CNull: - return QString::fromLatin1("null"); - case CUndefined: - return QString::fromLatin1("undefined"); - case JSValue: - Q_ASSERT(!m_value.IsEmpty()); - v8::HandleScope handleScope; - v8::TryCatch tryCatch; - v8::Local<v8::String> result = m_value->ToString(); - if (result.IsEmpty()) { - result = tryCatch.Exception()->ToString(); - m_engine->setException(tryCatch.Exception(), tryCatch.Message()); - } - return QJSConverter::toString(result); - } - - Q_ASSERT_X(false, "toString()", "Not all states are included in the previous switch statement."); - return QString(); // Avoid compiler warning. -} - -QVariant QJSValuePrivate::toVariant() const -{ - switch (m_state) { - case CBool: - return QVariant(u.m_bool); - case CString: - return QVariant(*u.m_string); - case CNumber: - return QVariant(u.m_number); - case CNull: - return QVariant(); - case CUndefined: - return QVariant(); - case JSValue: - break; - } - - Q_ASSERT(m_state == JSValue); - Q_ASSERT(!m_value.IsEmpty()); - Q_ASSERT(m_engine); - - v8::HandleScope handleScope; - return m_engine->variantFromJS(m_value); -} - -inline QDateTime QJSValuePrivate::toDataTime() const -{ - if (!isDate()) - return QDateTime(); - - v8::HandleScope handleScope; - return QJSConverter::toDateTime(v8::Handle<v8::Date>::Cast(m_value)); - -} - -QObject* QJSValuePrivate::toQObject() const -{ - if (!isJSBased()) - return 0; - - v8::HandleScope handleScope; - return engine()->qtObjectFromJS(m_value); -} - -double QJSValuePrivate::toInteger() const -{ - double result = toNumber(); - if (qIsNaN(result)) - return 0; - if (qIsInf(result)) - return result; - - // Must use floor explicitly rather than qFloor here. On some - // platforms qFloor will cast the value to a single precision float and use - // floorf() which results in test failures. - return (result > 0) ? floor(result) : -1 * floor(-result); -} - -qint32 QJSValuePrivate::toInt32() const -{ - double result = toInteger(); - // Orginaly it should look like that (result == 0 || qIsInf(result) || qIsNaN(result)), but - // some of these operation are invoked in toInteger subcall. - if (qIsInf(result)) - return 0; - return result; -} - -quint32 QJSValuePrivate::toUInt32() const -{ - double result = toInteger(); - // Orginaly it should look like that (result == 0 || qIsInf(result) || qIsNaN(result)), but - // some of these operation are invoked in toInteger subcall. - if (qIsInf(result)) - return 0; - - // The explicit casts are required to avoid undefined behaviour. For example, casting - // a negative double directly to an unsigned int on ARM NEON FPU results in the value - // being set to zero. Casting to a signed int first ensures well defined behaviour. - return (quint32) (qint32) result; -} - -quint16 QJSValuePrivate::toUInt16() const -{ - return toInt32(); -} - -inline bool QJSValuePrivate::isArray() const -{ - return isJSBased() && m_value->IsArray(); -} - -inline bool QJSValuePrivate::isBool() const -{ - return m_state == CBool || (isJSBased() && m_value->IsBoolean()); -} - -inline bool QJSValuePrivate::isCallable() const -{ - if (isFunction()) - return true; - if (isObject()) { - // Our C++ wrappers register function handlers but not always act as callables. - return v8::Object::Cast(*m_value)->IsCallable(); - } - return false; -} - -inline bool QJSValuePrivate::isError() const -{ - if (!isJSBased()) - return false; - v8::HandleScope handleScope; - return m_value->IsError(); -} - -inline bool QJSValuePrivate::isFunction() const -{ - return isJSBased() && m_value->IsFunction(); -} - -inline bool QJSValuePrivate::isNull() const -{ - return m_state == CNull || (isJSBased() && m_value->IsNull()); -} - -inline bool QJSValuePrivate::isNumber() const -{ - return m_state == CNumber || (isJSBased() && m_value->IsNumber()); -} - -inline bool QJSValuePrivate::isObject() const -{ - return isJSBased() && m_value->IsObject(); -} - -inline bool QJSValuePrivate::isString() const -{ - return m_state == CString || (isJSBased() && m_value->IsString()); -} - -inline bool QJSValuePrivate::isUndefined() const -{ - return m_state == CUndefined || (isJSBased() && m_value->IsUndefined()); -} - -inline bool QJSValuePrivate::isVariant() const -{ - return isJSBased() && m_engine->isVariant(m_value); -} - -bool QJSValuePrivate::isDate() const -{ - return (isJSBased() && m_value->IsDate()); -} - -bool QJSValuePrivate::isRegExp() const -{ - return (isJSBased() && m_value->IsRegExp()); -} - -bool QJSValuePrivate::isQObject() const -{ - return isJSBased() && engine()->isQObject(m_value); -} - -inline bool QJSValuePrivate::equals(QJSValuePrivate* other) -{ - if (!isJSBased() && !other->isJSBased()) { - switch (m_state) { - case CNull: - case CUndefined: - return other->isUndefined() || other->isNull(); - case CNumber: - switch (other->m_state) { - case CBool: - case CString: - return u.m_number == other->toNumber(); - case CNumber: - return u.m_number == other->u.m_number; - default: - return false; - } - case CBool: - switch (other->m_state) { - case CBool: - return u.m_bool == other->u.m_bool; - case CNumber: - return toNumber() == other->u.m_number; - case CString: - return toNumber() == other->toNumber(); - default: - return false; - } - case CString: - switch (other->m_state) { - case CBool: - return toNumber() == other->toNumber(); - case CNumber: - return toNumber() == other->u.m_number; - case CString: - return *u.m_string == *other->u.m_string; - default: - return false; - } - default: - Q_ASSERT_X(false, "QJSValue::equals", "Not all states are included in the previous switch statement."); - } - } - - v8::HandleScope handleScope; - if (isJSBased() && !other->isJSBased()) { - if (!other->assignEngine(engine())) { - qWarning("QJSValue::equals: cannot compare to a value created in a different engine"); - return false; - } - } else if (!isJSBased() && other->isJSBased()) { - if (!assignEngine(other->engine())) { - qWarning("QJSValue::equals: cannot compare to a value created in a different engine"); - return false; - } - } - - Q_ASSERT(this->engine() && other->engine()); - if (this->engine() != other->engine()) { - qWarning("QJSValue::equals: cannot compare to a value created in a different engine"); - return false; - } - return m_value->Equals(other->m_value); -} - -inline bool QJSValuePrivate::strictlyEquals(QJSValuePrivate* other) -{ - if (isJSBased()) { - // We can't compare these two values without binding to the same engine. - if (!other->isJSBased()) { - if (other->assignEngine(engine())) - return m_value->StrictEquals(other->m_value); - return false; - } - if (other->engine() != engine()) { - qWarning("QJSValue::strictlyEquals: cannot compare to a value created in a different engine"); - return false; - } - return m_value->StrictEquals(other->m_value); - } - if (isStringBased()) { - if (other->isStringBased()) - return *u.m_string == *(other->u.m_string); - if (other->isJSBased()) { - assignEngine(other->engine()); - return m_value->StrictEquals(other->m_value); - } - } - if (isNumberBased()) { - if (other->isJSBased()) { - assignEngine(other->engine()); - return m_value->StrictEquals(other->m_value); - } - if (m_state != other->m_state) - return false; - if (m_state == CNumber) - return u.m_number == other->u.m_number; - Q_ASSERT(m_state == CBool); - return u.m_bool == other->u.m_bool; - } - - return (isUndefined() && other->isUndefined()) - || (isNull() && other->isNull()); -} - -inline bool QJSValuePrivate::lessThan(QJSValuePrivate *other) const -{ - if (engine() != other->engine() && engine() && other->engine()) { - qWarning("QJSValue::lessThan: cannot compare to a value created in a different engine"); - return false; - } - - if (isString() && other->isString()) - return toString() < other->toString(); - - if (isObject() || other->isObject()) { - v8::HandleScope handleScope; - QV8Engine *eng = m_engine ? engine() : other->engine(); - // FIXME: lessThan can throw an exception which will be dropped by this code: - Q_ASSERT(eng); - eng->saveException(); - QScriptSharedDataPointer<QJSValuePrivate> cmp(eng->evaluate(QString::fromLatin1("(function(a,b){return a<b})"))); - Q_ASSERT(cmp->isFunction()); - v8::Handle<v8::Value> args[2]; - cmp->prepareArgumentsForCall(args, QJSValueList() << QJSValuePrivate::get(this) << QJSValuePrivate::get(other)); - QScriptSharedDataPointer<QJSValuePrivate> resultValue(cmp->call(0, 2, args)); - bool result = resultValue->toBool(); - eng->restoreException(); - return result; - } - - double nthis = toNumber(); - double nother = other->toNumber(); - if (qIsNaN(nthis) || qIsNaN(nother)) { - // Should return undefined in ECMA standard. - return false; - } - return nthis < nother; -} - -inline QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::prototype() const -{ - if (isObject()) { - v8::HandleScope handleScope; - return new QJSValuePrivate(engine(), v8::Handle<v8::Object>::Cast(m_value)->GetPrototype()); - } - return new QJSValuePrivate(); -} - -inline void QJSValuePrivate::setPrototype(QJSValuePrivate* prototype) -{ - if (isObject() && (prototype->isObject() || prototype->isNull())) { - if (engine() != prototype->engine()) { - if (prototype->engine()) { - qWarning("QJSValue::setPrototype() failed: cannot set a prototype created in a different engine"); - return; - } - prototype->assignEngine(engine()); - } - v8::HandleScope handleScope; - if (!v8::Handle<v8::Object>::Cast(m_value)->SetPrototype(*prototype)) - qWarning("QJSValue::setPrototype() failed: cyclic prototype value"); - } -} - -inline void QJSValuePrivate::setProperty(const QString& name, QJSValuePrivate* value, uint attribs) -{ - if (!isObject()) - return; - v8::HandleScope handleScope; - setProperty(QJSConverter::toString(name), value, attribs); -} - -inline void QJSValuePrivate::setProperty(v8::Handle<v8::String> name, QJSValuePrivate* value, uint attribs) -{ - if (!isObject()) - return; - - if (!value->isJSBased()) - value->assignEngine(engine()); - - if (engine() != value->engine()) { - qWarning("QJSValue::setProperty(%s) failed: " - "cannot set value created in a different engine", - qPrintable(QJSConverter::toString(name))); - return; - } - - v8::TryCatch tryCatch; -// if (attribs & (QJSValue::PropertyGetter | QJSValue::PropertySetter)) { -// engine()->originalGlobalObject()->defineGetterOrSetter(*this, name, value->m_value, attribs); -// } else { - v8::Object::Cast(*m_value)->Set(name, value->m_value, v8::PropertyAttribute(attribs & QJSConverter::PropertyAttributeMask)); -// } - if (tryCatch.HasCaught()) - engine()->setException(tryCatch.Exception(), tryCatch.Message()); -} - -inline void QJSValuePrivate::setProperty(quint32 index, QJSValuePrivate* value, uint attribs) -{ - // FIXME this method should by integrated with other overloads to use the same code patch. - // for now it is not possible as v8 doesn't allow to set property attributes using index based api. - - if (!isObject()) - return; - - if (attribs) { - // FIXME we dont need to convert index to a string. - //Object::Set(int,value) do not take attributes. - setProperty(QString::number(index), value, attribs); - return; - } - - if (!value->isJSBased()) - value->assignEngine(engine()); - - if (engine() != value->engine()) { - qWarning("QJSValue::setProperty() failed: cannot set value created in a different engine"); - return; - } - - v8::HandleScope handleScope; - v8::TryCatch tryCatch; - v8::Object::Cast(*m_value)->Set(index, value->m_value); - if (tryCatch.HasCaught()) - engine()->setException(tryCatch.Exception(), tryCatch.Message()); -} - -inline QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::property(const QString& name) const -{ - if (!isObject()) - return new QJSValuePrivate(); - if (!name.length()) - return new QJSValuePrivate(engine()); - - v8::HandleScope handleScope; - return property(QJSConverter::toString(name)); -} - -inline QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::property(v8::Handle<v8::String> name) const -{ - Q_ASSERT(!name.IsEmpty()); - if (!isObject()) - return new QJSValuePrivate(); - return property<>(name); -} - -inline QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::property(quint32 index) const -{ - if (!isObject()) - return new QJSValuePrivate(); - return property<>(index); -} - -template<typename T> -inline QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::property(T name) const -{ - Q_ASSERT(isObject()); - v8::HandleScope handleScope; - v8::Handle<v8::Object> self(v8::Object::Cast(*m_value)); - - v8::TryCatch tryCatch; - v8::Handle<v8::Value> result = self->Get(name); - if (tryCatch.HasCaught()) { - result = tryCatch.Exception(); - engine()->setException(result, tryCatch.Message()); - return new QJSValuePrivate(engine(), result); - } - if (result.IsEmpty()) - return new QJSValuePrivate(engine()); - return new QJSValuePrivate(engine(), result); -} - -inline bool QJSValuePrivate::deleteProperty(const QString& name) -{ - if (!isObject()) - return false; - - v8::HandleScope handleScope; - v8::Handle<v8::Object> self(v8::Handle<v8::Object>::Cast(m_value)); - return self->Delete(QJSConverter::toString(name)); -} - -inline bool QJSValuePrivate::hasProperty(const QString &name) const -{ - if (!isObject()) - return false; - - v8::HandleScope handleScope; - v8::Handle<v8::Object> self(v8::Handle<v8::Object>::Cast(m_value)); - return self->Has(QJSConverter::toString(name)); -} - -inline bool QJSValuePrivate::hasOwnProperty(const QString &name) const -{ - if (!isObject()) - return false; - - v8::HandleScope handleScope; - v8::Handle<v8::Object> self(v8::Handle<v8::Object>::Cast(m_value)); - return self->HasOwnProperty(QJSConverter::toString(name)); -} - -inline QJSValuePrivate::PropertyFlags QJSValuePrivate::propertyFlags(const QString& name) const -{ - if (!isObject()) - return QJSValuePrivate::PropertyFlags(0); - - v8::HandleScope handleScope; - return engine()->getPropertyFlags(v8::Handle<v8::Object>::Cast(m_value), QJSConverter::toString(name)); -} - -inline QJSValuePrivate::PropertyFlags QJSValuePrivate::propertyFlags(v8::Handle<v8::String> name) const -{ - if (!isObject()) - return QJSValuePrivate::PropertyFlags(0); - - v8::HandleScope handleScope; - return engine()->getPropertyFlags(v8::Handle<v8::Object>::Cast(m_value), name); -} - -inline QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::call(QJSValuePrivate* thisObject, const QJSValueList& args) -{ - if (!isCallable()) - return new QJSValuePrivate(); - - v8::HandleScope handleScope; - - // Convert all arguments and bind to the engine. - int argc = args.size(); - QVarLengthArray<v8::Handle<v8::Value>, 8> argv(argc); - if (!prepareArgumentsForCall(argv.data(), args)) { - qWarning("QJSValue::call() failed: cannot call function with argument created in a different engine"); - return new QJSValuePrivate(engine()); - } - - return call(thisObject, argc, argv.data()); -} - -QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::call(QJSValuePrivate* thisObject, int argc, v8::Handle<v8::Value> *argv) -{ - QV8Engine *e = engine(); - - v8::Handle<v8::Object> recv; - - if (!thisObject || !thisObject->isObject()) { - recv = v8::Handle<v8::Object>(v8::Object::Cast(*e->global())); - } else { - if (!thisObject->assignEngine(e)) { - qWarning("QJSValue::call() failed: cannot call function with thisObject created in a different engine"); - return new QJSValuePrivate(engine()); - } - - recv = v8::Handle<v8::Object>(v8::Object::Cast(*thisObject->m_value)); - } - - if (argc < 0) { - v8::Local<v8::Value> exeption = v8::Exception::TypeError(v8::String::New("Arguments must be an array")); - e->setException(exeption); - return new QJSValuePrivate(e, exeption); - } - - v8::TryCatch tryCatch; - v8::Handle<v8::Value> result = v8::Object::Cast(*m_value)->CallAsFunction(recv, argc, argv); - - if (result.IsEmpty()) { - result = tryCatch.Exception(); - // TODO: figure out why v8 doesn't always produce an exception value. - //Q_ASSERT(!result.IsEmpty()); - if (result.IsEmpty()) - result = v8::Exception::Error(v8::String::New("missing exception value")); - e->setException(result, tryCatch.Message()); - } - - return new QJSValuePrivate(e, result); -} - -inline QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::callAsConstructor(int argc, v8::Handle<v8::Value> *argv) -{ - QV8Engine *e = engine(); - - if (argc < 0) { - v8::Local<v8::Value> exeption = v8::Exception::TypeError(v8::String::New("Arguments must be an array")); - e->setException(exeption); - return new QJSValuePrivate(e, exeption); - } - - v8::TryCatch tryCatch; - v8::Handle<v8::Value> result = v8::Object::Cast(*m_value)->CallAsConstructor(argc, argv); - - if (result.IsEmpty()) { - result = tryCatch.Exception(); - e->setException(result, tryCatch.Message()); - } - - return new QJSValuePrivate(e, result); -} - -inline QScriptPassPointer<QJSValuePrivate> QJSValuePrivate::callAsConstructor(const QJSValueList& args) -{ - if (!isCallable()) - return new QJSValuePrivate(); - - v8::HandleScope handleScope; - - // Convert all arguments and bind to the engine. - int argc = args.size(); - QVarLengthArray<v8::Handle<v8::Value>, 8> argv(argc); - if (!prepareArgumentsForCall(argv.data(), args)) { - qWarning("QJSValue::callAsConstructor() failed: cannot construct function with argument created in a different engine"); - return new QJSValuePrivate(engine()); - } - - return callAsConstructor(argc, argv.data()); -} - -/*! \internal - * Make sure this value is associated with a v8 value belonging to this engine. - * If the value belongs to another engine, returns false. - */ -bool QJSValuePrivate::assignEngine(QV8Engine* engine) -{ - Q_ASSERT(engine); - v8::HandleScope handleScope; - switch (m_state) { - case CBool: - m_value = v8::Persistent<v8::Value>::New(engine->makeJSValue(u.m_bool)); - break; - case CString: - m_value = v8::Persistent<v8::Value>::New(engine->makeJSValue(*u.m_string)); - delete u.m_string; - break; - case CNumber: - m_value = v8::Persistent<v8::Value>::New(engine->makeJSValue(u.m_number)); - break; - case CNull: - m_value = v8::Persistent<v8::Value>::New(engine->makeJSValue(QJSValue::NullValue)); - break; - case CUndefined: - m_value = v8::Persistent<v8::Value>::New(engine->makeJSValue(QJSValue::UndefinedValue)); - break; - default: - if (this->engine() == engine) - return true; - else if (!isJSBased()) - Q_ASSERT_X(!isJSBased(), "assignEngine()", "Not all states are included in the previous switch statement."); - else - qWarning("JSValue can't be rassigned to an another engine."); - return false; - } - m_engine = engine; - m_state = JSValue; - - m_engine->registerValue(this); - return true; -} - -/*! - \internal - Invalidates this value (makes it undefined). - - Does not remove the value from the engine's list of - registered values; that's the responsibility of the caller. -*/ -void QJSValuePrivate::invalidate() -{ - if (isJSBased()) { - m_value.Dispose(); - m_value.Clear(); - } else if (isStringBased()) { - delete u.m_string; - } - m_engine = 0; - m_state = CUndefined; -} - -QV8Engine* QJSValuePrivate::engine() const -{ - return m_engine; -} - -inline QJSValuePrivate::operator v8::Handle<v8::Value>() const -{ - Q_ASSERT(isJSBased()); - return m_value; -} - -inline QJSValuePrivate::operator v8::Handle<v8::Object>() const -{ - Q_ASSERT(isObject()); - return v8::Handle<v8::Object>::Cast(m_value); -} - -/*! - * Return a v8::Handle, assign to the engine if needed. - */ -v8::Handle<v8::Value> QJSValuePrivate::asV8Value(QV8Engine* engine) -{ - if (!m_engine) { - if (!assignEngine(engine)) - return v8::Handle<v8::Value>(); - } - Q_ASSERT(isJSBased()); - return m_value; -} - -/*! - \internal - Returns true if QSV have an engine associated. -*/ -bool QJSValuePrivate::isJSBased() const -{ -#ifndef QT_NO_DEBUG - // internals check. - if (m_state >= JSValue) - Q_ASSERT(!m_value.IsEmpty()); - else - Q_ASSERT(m_value.IsEmpty()); -#endif - return m_state >= JSValue; -} - -/*! - \internal - Returns true if current value of QSV is placed in m_number. -*/ -bool QJSValuePrivate::isNumberBased() const { return m_state == CNumber || m_state == CBool; } - -/*! - \internal - Returns true if current value of QSV is placed in m_string. -*/ -bool QJSValuePrivate::isStringBased() const { return m_state == CString; } - -/*! - \internal - Converts arguments and bind them to the engine. - \attention argv should be big enough -*/ -inline bool QJSValuePrivate::prepareArgumentsForCall(v8::Handle<v8::Value> argv[], const QJSValueList& args) const -{ - QJSValueList::const_iterator i = args.constBegin(); - for (int j = 0; i != args.constEnd(); j++, i++) { - QJSValuePrivate* value = QJSValuePrivate::get(*i); - if ((value->isJSBased() && engine() != value->engine()) - || (!value->isJSBased() && !value->assignEngine(engine()))) - // Different engines are not allowed! - return false; - argv[j] = *value; - } - return true; -} - -QT_END_NAMESPACE - -#endif |