mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-29 11:00:29 +00:00
df515e1d85
This adds an `AK::ByteReader` to help with that so we don't duplicate the logic all over the place. No more `*(const u16*)` and `*(const u32*)` for anyone. This should help a little with #7060.
69 lines
1.3 KiB
C++
69 lines
1.3 KiB
C++
/*
|
|
* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Types.h>
|
|
|
|
namespace AK {
|
|
|
|
struct ByteReader {
|
|
static void store(u8* address, u16 value)
|
|
{
|
|
union {
|
|
u16 _16;
|
|
u8 _8[2];
|
|
} const v { ._16 = value };
|
|
__builtin_memcpy(address, v._8, 2);
|
|
}
|
|
|
|
static void store(u8* address, u32 value)
|
|
{
|
|
union {
|
|
u32 _32;
|
|
u8 _8[4];
|
|
} const v { ._32 = value };
|
|
__builtin_memcpy(address, v._8, 4);
|
|
}
|
|
|
|
static void load(const u8* address, u16& value)
|
|
{
|
|
union {
|
|
u16 _16;
|
|
u8 _8[2];
|
|
} v { ._16 = 0 };
|
|
__builtin_memcpy(&v._8, address, 2);
|
|
value = v._16;
|
|
}
|
|
|
|
static void load(const u8* address, u32& value)
|
|
{
|
|
union {
|
|
u32 _32;
|
|
u8 _8[4];
|
|
} v { ._32 = 0 };
|
|
__builtin_memcpy(&v._8, address, 4);
|
|
value = v._32;
|
|
}
|
|
|
|
static u16 load16(const u8* address)
|
|
{
|
|
u16 value;
|
|
load(address, value);
|
|
return value;
|
|
}
|
|
|
|
static u32 load32(const u8* address)
|
|
{
|
|
u32 value;
|
|
load(address, value);
|
|
return value;
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
using AK::ByteReader;
|