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
|
/* SPDX-License-Identifier: BSD-2-Clause */
/* Copyright 1996-2025 The NASM Authors - All Rights Reserved */
/*
* ctype-like functions specific to NASM
*/
#ifndef NASM_NCTYPE_H
#define NASM_NCTYPE_H
#include "compiler.h"
void nasm_ctype_init(void);
extern unsigned char nasm_tolower_tab[256];
static inline char nasm_tolower(char x)
{
return nasm_tolower_tab[(unsigned char)x];
}
/*
* NASM ctype table
*/
enum nasm_ctype {
NCT_CTRL = 0x0001,
NCT_SPACE = 0x0002,
NCT_ASCII = 0x0004,
NCT_LOWER = 0x0008, /* isalpha(x) && tolower(x) == x */
NCT_UPPER = 0x0010, /* isalpha(x) && tolower(x) != x */
NCT_DIGIT = 0x0020,
NCT_HEX = 0x0040,
NCT_ID = 0x0080,
NCT_IDSTART = 0x0100,
NCT_MINUS = 0x0200, /* - */
NCT_DOLLAR = 0x0400, /* $ */
NCT_UNDER = 0x0800, /* _ */
NCT_QUOTE = 0x1000 /* " ' ` */
};
extern uint16_t nasm_ctype_tab[256];
static inline bool nasm_ctype(unsigned char x, enum nasm_ctype mask)
{
return (nasm_ctype_tab[x] & mask) != 0;
}
static inline bool nasm_isspace(char x)
{
return nasm_ctype(x, NCT_SPACE);
}
static inline bool nasm_isalpha(char x)
{
return nasm_ctype(x, NCT_LOWER|NCT_UPPER);
}
static inline bool nasm_isdigit(char x)
{
return nasm_ctype(x, NCT_DIGIT);
}
static inline bool nasm_isalnum(char x)
{
return nasm_ctype(x, NCT_LOWER|NCT_UPPER|NCT_DIGIT);
}
static inline bool nasm_isxdigit(char x)
{
return nasm_ctype(x, NCT_HEX);
}
static inline bool nasm_isidstart(char x)
{
return nasm_ctype(x, NCT_IDSTART);
}
static inline bool nasm_isidchar(char x)
{
return nasm_ctype(x, NCT_ID);
}
static inline bool nasm_isbrcchar(char x)
{
return nasm_ctype(x, NCT_ID|NCT_MINUS);
}
static inline bool nasm_isnumstart(char x)
{
return nasm_ctype(x, NCT_DIGIT|NCT_DOLLAR);
}
static inline bool nasm_isnumchar(char x)
{
return nasm_ctype(x, NCT_DIGIT|NCT_LOWER|NCT_UPPER|NCT_UNDER);
}
static inline bool nasm_isquote(char x)
{
return nasm_ctype(x, NCT_QUOTE);
}
static inline void nasm_ctype_tasm_mode(void)
{
/* No differences at the present moment */
}
/* Returns a value >= 16 if not a valid hex digit */
static inline unsigned int nasm_hexval(char c)
{
unsigned int v = (unsigned char) c;
if (v >= '0' && v <= '9')
return v - '0';
else
return (v|0x20) - 'a' + 10;
}
#endif /* NASM_NCTYPE_H */
|
