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