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/*
* Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
* 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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.
*/
#pragma once
namespace JS {
struct Attribute {
enum {
Configurable = 1 << 0,
Enumerable = 1 << 1,
Writable = 1 << 2,
HasGetter = 1 << 3,
HasSetter = 1 << 4,
HasConfigurable = 1 << 5,
HasEnumerable = 1 << 6,
HasWritable = 1 << 7,
};
};
class PropertyAttributes {
public:
PropertyAttributes(u8 bits = 0)
{
m_bits = bits;
if (bits & Attribute::Configurable)
m_bits |= Attribute::HasConfigurable;
if (bits & Attribute::Enumerable)
m_bits |= Attribute::HasEnumerable;
if (bits & Attribute::Writable)
m_bits |= Attribute::HasWritable;
}
bool is_empty() const { return !m_bits; }
bool has_configurable() const { return m_bits & Attribute::HasConfigurable; }
bool has_enumerable() const { return m_bits & Attribute::HasEnumerable; }
bool has_writable() const { return m_bits & Attribute::HasWritable; }
bool has_getter() const { return m_bits & Attribute::HasGetter; }
bool has_setter() const { return m_bits & Attribute::HasSetter; }
bool is_configurable() const { return m_bits & Attribute::Configurable; }
bool is_enumerable() const { return m_bits & Attribute::Enumerable; }
bool is_writable() const { return m_bits & Attribute::Writable; }
void set_has_configurable() { m_bits |= Attribute::HasConfigurable; }
void set_has_enumerable() { m_bits |= Attribute::HasEnumerable; }
void set_has_writable() { m_bits |= Attribute::HasWritable; }
void set_configurable() { m_bits |= Attribute::Configurable; }
void set_enumerable() { m_bits |= Attribute::Enumerable; }
void set_writable() { m_bits |= Attribute::Writable; }
void set_has_getter() { m_bits |= Attribute::HasGetter; }
void set_has_setter() { m_bits |= Attribute::HasSetter; }
bool operator==(const PropertyAttributes& other) const { return m_bits == other.m_bits; }
bool operator!=(const PropertyAttributes& other) const { return m_bits != other.m_bits; }
u8 bits() const { return m_bits; }
private:
u8 m_bits;
};
const LogStream& operator<<(const LogStream& stream, const PropertyAttributes& attributes);
const PropertyAttributes default_attributes = Attribute::Configurable | Attribute::Writable | Attribute::Enumerable;
}
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