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/*
This file is part of the KDE libraries
Copyright (C) 2012 Bernd Buschinski <b.buschinski@googlemail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef PROPERTYDESCRIPTOR_H
#define PROPERTYDESCRIPTOR_H
#include "global.h"
#include "ustring.h"
namespace KJS {
class JSObject;
class ExecState;
class KJS_EXPORT PropertyDescriptor
{
public:
PropertyDescriptor();
bool isAccessorDescriptor() const;
bool isDataDescriptor() const;
bool isGenericDescriptor() const;
JSObject* fromPropertyDescriptor(ExecState* exec);
// Set the PropertyDescriptor given Javascript Object containing any of
// value, get, set, enumerable, configurable, writeable
bool setPropertyDescriptorFromObject(ExecState* exec, JSValue* obj);
// Set the PropertyDescriptor from internal Object, given the value, which can be
// a GetterSetterImpl and set attributes
bool setPropertyDescriptorValues(ExecState* exec, JSValue *value, unsigned int attributes);
bool enumerable() const;
bool writable() const;
bool configurable() const;
// enumerableSet & co, true if setPropertyDescriptorFromObject contained
// enumerable, configurable or writeable, if not false.
bool enumerableSet() const;
bool writableSet() const;
bool configureSet() const;
JSValue* value() const;
JSValue* getter() const;
JSValue* setter() const;
void setEnumerable(bool enumerable);
void setConfigureable(bool configureable);
void setValue(JSValue* value);
void setWritable(bool writable);
void setGetter(JSValue* getter);
void setSetter(JSValue* setter);
unsigned int attributes() const;
bool isEmpty() const;
// Comapred PropertyDescriptor in terms of its value. It compared the Attributes
// but not if these values are explicitly set. Also the check is difference
// in comparing the getter/setter. They are compared if they need to be updated,
// not only if they have the same value.
bool equalTo(ExecState* exec, PropertyDescriptor& other) const;
// This function gives new Attributes calculation from current and other
// PropertyDescriptor. New Attributes are set depending if Descriptor has
// enumerable/writeable/configurableSet, if absent default is used.
// NOTE: As interval have enumerable/writable/configurable always set and
// javascript object dont, the order matters here.
// In this case the correct order is: current.attributesWithOverride(new)
// where new is the javascript object that might not have all attributes set.
unsigned int attributesWithOverride(PropertyDescriptor& other) const;
private:
// Check if PropertyDescriptor really is the same. This is private for
// internal use only, so that it will not easily be confussed with equalTo.
// This function does compared set Attributes.
bool operator==(PropertyDescriptor& other) const;
unsigned int m_attributes;
unsigned int m_setAttributes;
enum { WritableSet = 1 << 0, EnumerableSet = 1 << 1, ConfigurableSet = 1 << 2 };
JSValue* m_value;
JSValue* m_getter;
JSValue* m_setter;
};
}
#endif // PROPERTYDESCRIPTOR_H
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