| /* |
| * Copyright (C) 2009 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef PropertyDescriptor_h |
| #define PropertyDescriptor_h |
| |
| #include "JSValue.h" |
| |
| namespace JSC { |
| class GetterSetter; |
| |
| // See ES5.1 9.12 |
| bool sameValue(ExecState*, JSValue, JSValue); |
| |
| class PropertyDescriptor { |
| public: |
| PropertyDescriptor() |
| : m_attributes(defaultAttributes) |
| , m_seenAttributes(0) |
| { |
| } |
| JS_EXPORT_PRIVATE bool writable() const; |
| JS_EXPORT_PRIVATE bool enumerable() const; |
| JS_EXPORT_PRIVATE bool configurable() const; |
| JS_EXPORT_PRIVATE bool isDataDescriptor() const; |
| bool isGenericDescriptor() const; |
| JS_EXPORT_PRIVATE bool isAccessorDescriptor() const; |
| unsigned attributes() const { return m_attributes; } |
| JSValue value() const { return m_value; } |
| JS_EXPORT_PRIVATE JSValue getter() const; |
| JS_EXPORT_PRIVATE JSValue setter() const; |
| JSObject* getterObject() const; |
| JSObject* setterObject() const; |
| JS_EXPORT_PRIVATE void setUndefined(); |
| JS_EXPORT_PRIVATE void setDescriptor(JSValue value, unsigned attributes); |
| void setAccessorDescriptor(GetterSetter* accessor, unsigned attributes); |
| JS_EXPORT_PRIVATE void setWritable(bool); |
| JS_EXPORT_PRIVATE void setEnumerable(bool); |
| JS_EXPORT_PRIVATE void setConfigurable(bool); |
| void setValue(JSValue value) { m_value = value; } |
| JS_EXPORT_PRIVATE void setSetter(JSValue); |
| JS_EXPORT_PRIVATE void setGetter(JSValue); |
| bool isEmpty() const { return !(m_value || m_getter || m_setter || m_seenAttributes); } |
| bool writablePresent() const { return m_seenAttributes & WritablePresent; } |
| bool enumerablePresent() const { return m_seenAttributes & EnumerablePresent; } |
| bool configurablePresent() const { return m_seenAttributes & ConfigurablePresent; } |
| bool setterPresent() const { return m_setter; } |
| bool getterPresent() const { return m_getter; } |
| bool equalTo(ExecState* exec, const PropertyDescriptor& other) const; |
| bool attributesEqual(const PropertyDescriptor& other) const; |
| unsigned attributesOverridingCurrent(const PropertyDescriptor& current) const; |
| |
| private: |
| JS_EXPORTDATA static unsigned defaultAttributes; |
| bool operator==(const PropertyDescriptor&){ return false; } |
| enum { WritablePresent = 1, EnumerablePresent = 2, ConfigurablePresent = 4}; |
| // May be a getter/setter |
| JSValue m_value; |
| JSValue m_getter; |
| JSValue m_setter; |
| unsigned m_attributes; |
| unsigned m_seenAttributes; |
| }; |
| } |
| |
| #endif |
