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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the V4VM module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QV4PROPERTYDESCRIPTOR_H
#define QV4PROPERTYDESCRIPTOR_H
#include "qv4global.h"
#include "qv4value.h"
#include "qv4internalclass.h"
QT_BEGIN_NAMESPACE
namespace QQmlJS {
namespace VM {
struct FunctionObject;
struct Property {
union {
Value value;
struct {
FunctionObject *get;
FunctionObject *set;
};
};
// Section 8.10
inline void fullyPopulated(PropertyAttributes *attrs) {
if (!attrs->hasType()) {
value = Value::undefinedValue();
}
if (attrs->type() == PropertyAttributes::Accessor) {
attrs->clearWritable();
if (get == (FunctionObject *)0x1)
get = 0;
if (set == (FunctionObject *)0x1)
set = 0;
}
attrs->resolve();
}
static inline Property fromValue(Value v) {
Property pd;
pd.value = v;
return pd;
}
static inline Property fromAccessor(FunctionObject *getter, FunctionObject *setter) {
Property pd;
pd.get = getter;
pd.set = setter;
return pd;
}
static Property genericDescriptor() {
Property pd;
pd.value = Value::deletedValue();
return pd;
}
inline bool isSubset(const PropertyAttributes &attrs, const Property &other, PropertyAttributes otherAttrs) const;
inline void merge(PropertyAttributes &attrs, const Property &other, PropertyAttributes otherAttrs);
inline FunctionObject *getter() const { return get; }
inline FunctionObject *setter() const { return set; }
inline void setGetter(FunctionObject *g) { get = g; }
inline void setSetter(FunctionObject *s) { set = s; }
};
inline bool Property::isSubset(const PropertyAttributes &attrs, const Property &other, PropertyAttributes otherAttrs) const
{
if (attrs.type() != PropertyAttributes::Generic && attrs.type() != otherAttrs.type())
return false;
if (attrs.hasEnumerable() && attrs.isEnumerable() != otherAttrs.isEnumerable())
return false;
if (attrs.hasConfigurable() && attrs.isConfigurable() != otherAttrs.isConfigurable())
return false;
if (attrs.hasWritable() && attrs.isWritable() != otherAttrs.isWritable())
return false;
if (attrs.type() == PropertyAttributes::Data && !value.sameValue(other.value))
return false;
if (attrs.type() == PropertyAttributes::Accessor) {
if (get != other.get)
return false;
if (set != other.set)
return false;
}
return true;
}
inline void Property::merge(PropertyAttributes &attrs, const Property &other, PropertyAttributes otherAttrs)
{
if (otherAttrs.hasEnumerable())
attrs.setEnumerable(otherAttrs.isEnumerable());
if (otherAttrs.hasConfigurable())
attrs.setConfigurable(otherAttrs.isConfigurable());
if (otherAttrs.hasWritable())
attrs.setWritable(otherAttrs.isWritable());
if (otherAttrs.type() == PropertyAttributes::Accessor) {
attrs.setType(PropertyAttributes::Accessor);
if (other.get)
get = (other.get == (FunctionObject *)0x1) ? 0 : other.get;
if (other.set)
set = (other.set == (FunctionObject *)0x1) ? 0 : other.set;
} else if (otherAttrs.type() == PropertyAttributes::Data){
attrs.setType(PropertyAttributes::Data);
value = other.value;
}
}
} // namespace VM
} // namespace QQmlJS
QT_END_NAMESPACE
#endif
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