blob: adf3d8225702d3f80bf45aa0fc0273fe12267a18 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Format.h>
#include <AK/Forward.h>
#include <AK/Platform.h>
#if defined(AK_OS_MACOS)
# include <libkern/OSByteOrder.h>
# include <machine/endian.h>
# define htobe16(x) OSSwapHostToBigInt16(x)
# define htole16(x) OSSwapHostToLittleInt16(x)
# define be16toh(x) OSSwapBigToHostInt16(x)
# define le16toh(x) OSSwapLittleToHostInt16(x)
# define htobe32(x) OSSwapHostToBigInt32(x)
# define htole32(x) OSSwapHostToLittleInt32(x)
# define be32toh(x) OSSwapBigToHostInt32(x)
# define le32toh(x) OSSwapLittleToHostInt32(x)
# define htobe64(x) OSSwapHostToBigInt64(x)
# define htole64(x) OSSwapHostToLittleInt64(x)
# define be64toh(x) OSSwapBigToHostInt64(x)
# define le64toh(x) OSSwapLittleToHostInt64(x)
# define __BIG_ENDIAN BIG_ENDIAN
# define __LITTLE_ENDIAN LITTLE_ENDIAN
# define __BYTE_ORDER BYTE_ORDER
#endif
namespace AK {
template<typename T>
ALWAYS_INLINE constexpr T convert_between_host_and_little_endian(T value)
{
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
return value;
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
if constexpr (sizeof(T) == 8)
return __builtin_bswap64(value);
if constexpr (sizeof(T) == 4)
return __builtin_bswap32(value);
if constexpr (sizeof(T) == 2)
return __builtin_bswap16(value);
if constexpr (sizeof(T) == 1)
return value;
#endif
}
template<typename T>
ALWAYS_INLINE constexpr T convert_between_host_and_big_endian(T value)
{
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
if constexpr (sizeof(T) == 8)
return __builtin_bswap64(value);
if constexpr (sizeof(T) == 4)
return __builtin_bswap32(value);
if constexpr (sizeof(T) == 2)
return __builtin_bswap16(value);
if constexpr (sizeof(T) == 1)
return value;
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
return value;
#endif
}
template<typename T>
ALWAYS_INLINE T convert_between_host_and_network_endian(T value)
{
return convert_between_host_and_big_endian(value);
}
template<typename T>
class LittleEndian;
template<typename T>
InputStream& operator>>(InputStream&, LittleEndian<T>&);
template<typename T>
OutputStream& operator<<(OutputStream&, LittleEndian<T>);
template<typename T>
class [[gnu::packed]] LittleEndian {
public:
friend InputStream& operator>><T>(InputStream&, LittleEndian<T>&);
friend OutputStream& operator<<<T>(OutputStream&, LittleEndian<T>);
constexpr LittleEndian() = default;
constexpr LittleEndian(T value)
: m_value(convert_between_host_and_little_endian(value))
{
}
constexpr operator T() const { return convert_between_host_and_little_endian(m_value); }
private:
T m_value { 0 };
};
template<typename T>
class BigEndian;
template<typename T>
InputStream& operator>>(InputStream&, BigEndian<T>&);
template<typename T>
OutputStream& operator<<(OutputStream&, BigEndian<T>);
template<typename T>
class [[gnu::packed]] BigEndian {
public:
friend InputStream& operator>><T>(InputStream&, BigEndian<T>&);
friend OutputStream& operator<<<T>(OutputStream&, BigEndian<T>);
constexpr BigEndian() = default;
constexpr BigEndian(T value)
: m_value(convert_between_host_and_big_endian(value))
{
}
constexpr operator T() const { return convert_between_host_and_big_endian(m_value); }
private:
T m_value { 0 };
};
template<typename T>
using NetworkOrdered = BigEndian<T>;
template<typename T>
requires(HasFormatter<T>) struct Formatter<LittleEndian<T>> : Formatter<T> {
};
template<typename T>
requires(HasFormatter<T>) struct Formatter<BigEndian<T>> : Formatter<T> {
};
}
using AK::BigEndian;
using AK::LittleEndian;
using AK::NetworkOrdered;
|
