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
|
/*
** $Id: lobject.c,v 1.9 1997/12/26 18:38:16 roberto Exp roberto $
** Some generic functions over Lua objects
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include <string.h>
#include "lobject.h"
#include "lua.h"
char *luaO_typenames[] = { /* ORDER LUA_T */
"userdata", "number", "string", "table", "function", "function",
"nil", "function", "mark", "mark", "mark", "line", NULL
};
TObject luaO_nilobject = {LUA_T_NIL, {NULL}};
/* hash dimensions values */
static long dimensions[] =
{5L, 11L, 23L, 47L, 97L, 197L, 397L, 797L, 1597L, 3203L, 6421L,
12853L, 25717L, 51437L, 102811L, 205619L, 411233L, 822433L,
1644817L, 3289613L, 6579211L, 13158023L, MAX_INT};
int luaO_redimension (int oldsize)
{
int i;
for (i=0; dimensions[i]<MAX_INT; i++) {
if (dimensions[i] > oldsize)
return dimensions[i];
}
lua_error("table overflow");
return 0; /* to avoid warnings */
}
int luaO_equalObj (TObject *t1, TObject *t2)
{
if (ttype(t1) != ttype(t2)) return 0;
switch (ttype(t1)) {
case LUA_T_NIL: return 1;
case LUA_T_NUMBER: return nvalue(t1) == nvalue(t2);
case LUA_T_STRING: case LUA_T_USERDATA: return svalue(t1) == svalue(t2);
case LUA_T_ARRAY: return avalue(t1) == avalue(t2);
case LUA_T_PROTO: return tfvalue(t1) == tfvalue(t2);
case LUA_T_CPROTO: return fvalue(t1) == fvalue(t2);
case LUA_T_CLOSURE: return t1->value.cl == t2->value.cl;
default:
lua_error("internal error in `lua_equalObj'");
return 0; /* UNREACHEABLE */
}
}
int luaO_findstring (char *name, char *list[])
{
int i;
for (i=0; list[i]; i++)
if (strcmp(list[i], name) == 0)
return i;
return -1; /* name not found */
}
void luaO_insertlist (GCnode *root, GCnode *node)
{
node->next = root->next;
root->next = node;
node->marked = 0;
}
#ifdef OLD_ANSI
void luaO_memup (void *dest, void *src, int size)
{
char *d = dest;
char *s = src;
while (size--) d[size]=s[size];
}
void luaO_memdown (void *dest, void *src, int size)
{
char *d = dest;
char *s = src;
int i;
for (i=0; i<size; i++) d[i]=s[i];
}
#endif
|
