-
Notifications
You must be signed in to change notification settings - Fork 10
/
lptypes.h
145 lines (82 loc) · 2.82 KB
/
lptypes.h
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
/*
** $Id: lptypes.h $
** LPeg - PEG pattern matching for Lua
** Copyright 2007-2019, Lua.org & PUC-Rio (see 'lpeg.html' for license)
** written by Roberto Ierusalimschy
*/
#if !defined(lptypes_h)
#define lptypes_h
#include <assert.h>
#include <limits.h>
#include "lua.h"
#define VERSION "1.0.2"
#define PATTERN_T "lpeg-pattern"
#define MAXSTACKIDX "lpeg-maxstack"
/*
** compatibility with Lua 5.1
*/
#if (LUA_VERSION_NUM == 501)
#define lp_equal lua_equal
#define lua_getuservalue lua_getfenv
#define lua_setuservalue lua_setfenv
#define lua_rawlen lua_objlen
#define luaL_setfuncs(L,f,n) luaL_register(L,NULL,f)
#define luaL_newlib(L,f) luaL_register(L,"lpeg",f)
#endif
#if !defined(lp_equal)
#define lp_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
#endif
/* default maximum size for call/backtrack stack */
#if !defined(MAXBACK)
#define MAXBACK 400
#endif
/* maximum number of rules in a grammar (limited by 'unsigned char') */
#if !defined(MAXRULES)
#define MAXRULES 250
#endif
/* initial size for capture's list */
#define INITCAPSIZE 32
/* index, on Lua stack, for subject */
#define SUBJIDX 2
/* number of fixed arguments to 'match' (before capture arguments) */
#define FIXEDARGS 3
/* index, on Lua stack, for capture list */
#define caplistidx(ptop) ((ptop) + 2)
/* index, on Lua stack, for pattern's ktable */
#define ktableidx(ptop) ((ptop) + 3)
/* index, on Lua stack, for backtracking stack */
#define stackidx(ptop) ((ptop) + 4)
typedef unsigned char byte;
#define BITSPERCHAR 8
#define CHARSETSIZE ((UCHAR_MAX/BITSPERCHAR) + 1)
typedef struct Charset {
byte cs[CHARSETSIZE];
} Charset;
#define loopset(v,b) { int v; for (v = 0; v < CHARSETSIZE; v++) {b;} }
/* access to charset */
#define treebuffer(t) ((byte *)((t) + 1))
/* number of slots needed for 'n' bytes */
#define bytes2slots(n) (((n) - 1) / sizeof(TTree) + 1)
/* set 'b' bit in charset 'cs' */
#define setchar(cs,b) ((cs)[(b) >> 3] |= (1 << ((b) & 7)))
/*
** in capture instructions, 'kind' of capture and its offset are
** packed in field 'aux', 4 bits for each
*/
#define getkind(op) ((op)->i.aux & 0xF)
#define getoff(op) (((op)->i.aux >> 4) & 0xF)
#define joinkindoff(k,o) ((k) | ((o) << 4))
#define MAXOFF 0xF
#define MAXAUX 0xFF
/* maximum number of bytes to look behind */
#define MAXBEHIND MAXAUX
/* maximum size (in elements) for a pattern */
#define MAXPATTSIZE (SHRT_MAX - 10)
/* size (in elements) for an instruction plus extra l bytes */
#define instsize(l) (((l) + sizeof(Instruction) - 1)/sizeof(Instruction) + 1)
/* size (in elements) for a ISet instruction */
#define CHARSETINSTSIZE instsize(CHARSETSIZE)
/* size (in elements) for a IFunc instruction */
#define funcinstsize(p) ((p)->i.aux + 2)
#define testchar(st,c) (((int)(st)[((c) >> 3)] & (1 << ((c) & 7))))
#endif