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/*
* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Format.h>
#include <AK/Types.h>
namespace JS {
struct Attribute {
enum {
Writable = 1 << 0,
Enumerable = 1 << 1,
Configurable = 1 << 2,
};
};
// 6.1.7.1 Property Attributes, https://tc39.es/ecma262/#sec-property-attributes
class PropertyAttributes {
public:
PropertyAttributes(u8 bits = 0)
: m_bits(bits)
{
}
[[nodiscard]] bool is_writable() const { return m_bits & Attribute::Writable; }
[[nodiscard]] bool is_enumerable() const { return m_bits & Attribute::Enumerable; }
[[nodiscard]] bool is_configurable() const { return m_bits & Attribute::Configurable; }
void set_writable(bool writable = true)
{
if (writable)
m_bits |= Attribute::Writable;
else
m_bits &= ~Attribute::Writable;
}
void set_enumerable(bool enumerable = true)
{
if (enumerable)
m_bits |= Attribute::Enumerable;
else
m_bits &= ~Attribute::Enumerable;
}
void set_configurable(bool configurable = true)
{
if (configurable)
m_bits |= Attribute::Configurable;
else
m_bits &= ~Attribute::Configurable;
}
bool operator==(const PropertyAttributes& other) const { return m_bits == other.m_bits; }
bool operator!=(const PropertyAttributes& other) const { return m_bits != other.m_bits; }
[[nodiscard]] u8 bits() const { return m_bits; }
private:
u8 m_bits;
};
PropertyAttributes const default_attributes = Attribute::Configurable | Attribute::Writable | Attribute::Enumerable;
}
namespace AK {
template<>
struct Formatter<JS::PropertyAttributes> : Formatter<StringView> {
void format(FormatBuilder& builder, JS::PropertyAttributes const& property_attributes)
{
Vector<String> parts;
parts.append(String::formatted("[[Writable]]: {}", property_attributes.is_writable()));
parts.append(String::formatted("[[Enumerable]]: {}", property_attributes.is_enumerable()));
parts.append(String::formatted("[[Configurable]]: {}", property_attributes.is_configurable()));
Formatter<StringView>::format(builder, String::formatted("PropertyAttributes {{ {} }}", String::join(", ", parts)));
}
};
}
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