qscriptecmaboolean.cpp

奇趣公司比较新的qt/emd版本

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#include "qscriptecmaboolean_p.h"

#ifndef QT_NO_SCRIPT

#include "qscriptengine_p.h"
#include "qscriptvalueimpl_p.h"
#include "qscriptcontext_p.h"
#include "qscriptmember_p.h"
#include "qscriptobject_p.h"

#include <QtCore/QtDebug>

namespace QScript { namespace Ecma {

Boolean::Boolean(QScriptEnginePrivate *eng):
    Core(eng)
{
    m_classInfo = eng->registerClass(QLatin1String("Boolean"));

    publicPrototype.invalidate();
    newBoolean(&publicPrototype, false);

    eng->newConstructor(&ctor, this, publicPrototype);

    const QScriptValue::PropertyFlags flags = QScriptValue::SkipInEnumeration;
    publicPrototype.setProperty(QLatin1String("toString"),
                                eng->createFunction(method_toString, 0, m_classInfo), flags);
    publicPrototype.setProperty(QLatin1String("valueOf"),
                                eng->createFunction(method_valueOf, 0, m_classInfo), flags);
}

Boolean::~Boolean()
{
}

void Boolean::execute(QScriptContextPrivate *context)
{
    bool value;
    if (context->argumentCount() > 0)
        value = context->argument(0).toBoolean();
    else
        value = false;

    QScriptValueImpl boolean(engine(), value);
    if (!context->isCalledAsConstructor()) {
        context->setReturnValue(boolean);
    } else {
        QScriptValueImpl &obj = context->m_thisObject;
        obj.setClassInfo(classInfo());
        obj.setInternalValue(boolean);
        obj.setPrototype(publicPrototype);
        context->setReturnValue(obj);
    }
}

void Boolean::newBoolean(QScriptValueImpl *result, bool value)
{
    engine()->newObject(result, publicPrototype, classInfo());
    result->setInternalValue(QScriptValueImpl(engine(), value));
}

QScriptValueImpl Boolean::method_toString(QScriptContextPrivate *context,
                                          QScriptEnginePrivate *eng,
                                          QScriptClassInfo *classInfo)
{
    QScriptValueImpl self = context->thisObject();
    if (self.classInfo() != classInfo)
        return context->throwError(QScriptContext::TypeError,
                                   QLatin1String("Boolean.prototype.toString"));

    const QScript::IdTable *t = eng->idTable();
    bool v = self.internalValue().toBoolean();
    QScriptValueImpl result;
    eng->newNameId(&result, v ? t->id_true : t->id_false);
    return result;
}

QScriptValueImpl Boolean::method_valueOf(QScriptContextPrivate *context,
                                         QScriptEnginePrivate *,
                                         QScriptClassInfo *classInfo)
{
    QScriptValueImpl self = context->thisObject();
    if (self.classInfo() != classInfo)
        return context->throwError(QScriptContext::TypeError,
                                   QLatin1String("Boolean.prototype.valueOf"));

    return self.internalValue();
}

} } // namespace QScript::Ecma

#endif // QT_NO_SCRIPT