mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-05 22:52:22 +02:00
6ce327f715
Reduces the size of `Optional<EnvironmentCoordinate>` from 12 to 8 bytes, and by reordering the fields in `Reference` we shrink that down from 64 to 56 bytes as well.
41 lines
911 B
C++
41 lines
911 B
C++
/*
|
|
* Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Optional.h>
|
|
#include <AK/Types.h>
|
|
#include <LibJS/Forward.h>
|
|
|
|
namespace JS {
|
|
|
|
struct EnvironmentCoordinate {
|
|
u32 hops { invalid_marker };
|
|
u32 index { invalid_marker };
|
|
|
|
bool is_valid() const { return hops != invalid_marker && index != invalid_marker; }
|
|
|
|
static constexpr u32 invalid_marker = 0xfffffffe;
|
|
};
|
|
|
|
}
|
|
|
|
namespace AK {
|
|
|
|
template<>
|
|
struct SentinelOptionalTraits<JS::EnvironmentCoordinate> {
|
|
static constexpr JS::EnvironmentCoordinate sentinel_value() { return {}; }
|
|
static constexpr bool is_sentinel(JS::EnvironmentCoordinate const& value) { return !value.is_valid(); }
|
|
};
|
|
|
|
template<>
|
|
class Optional<JS::EnvironmentCoordinate> : public SentinelOptional<JS::EnvironmentCoordinate> {
|
|
public:
|
|
using SentinelOptional::SentinelOptional;
|
|
};
|
|
|
|
}
|