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
|
/* tolua: funcitons to convert to C types
** Support code for Lua bindings.
** Written by Waldemar Celes
** TeCGraf/PUC-Rio
** Apr 2003
** $Id: $
*/
/* This code is free software; you can redistribute it and/or modify it.
** The software provided hereunder is on an "as is" basis, and
** the author has no obligation to provide maintenance, support, updates,
** enhancements, or modifications.
*/
#include "tolua++.h"
#include <string.h>
#include <stdlib.h>
TOLUA_API lua_Number tolua_tonumber (lua_State* L, int narg, lua_Number def)
{
return lua_gettop(L)<abs(narg) ? def : lua_tonumber(L,narg);
}
TOLUA_API const char* tolua_tostring (lua_State* L, int narg, const char* def)
{
return lua_gettop(L)<abs(narg) ? def : lua_tostring(L,narg);
}
TOLUA_API void* tolua_touserdata (lua_State* L, int narg, void* def)
{
/* return lua_gettop(L)<abs(narg) ? def : lua_touserdata(L,narg); */
if (lua_gettop(L)<abs(narg)) {
return def;
};
if (lua_islightuserdata(L, narg)) {
return lua_touserdata(L,narg);
};
return tolua_tousertype(L, narg, def);
}
extern int push_table_instance(lua_State* L, int lo);
TOLUA_API void* tolua_tousertype (lua_State* L, int narg, void* def)
{
if (lua_gettop(L)<abs(narg))
return def;
else
{
void* u;
if (!lua_isuserdata(L, narg)) {
if (!push_table_instance(L, narg)) return NULL;
};
u = lua_touserdata(L,narg);
return (u==NULL) ? NULL : *((void**)u); /* nil represents NULL */
}
}
TOLUA_API int tolua_tovalue (lua_State* L, int narg, int def)
{
return lua_gettop(L)<abs(narg) ? def : narg;
}
TOLUA_API int tolua_toboolean (lua_State* L, int narg, int def)
{
return lua_gettop(L)<abs(narg) ? def : lua_toboolean(L,narg);
}
TOLUA_API lua_Number tolua_tofieldnumber (lua_State* L, int lo, int index, lua_Number def)
{
double v;
lua_pushnumber(L,index);
lua_gettable(L,lo);
v = lua_isnil(L,-1) ? def : lua_tonumber(L,-1);
lua_pop(L,1);
return v;
}
TOLUA_API const char* tolua_tofieldstring
(lua_State* L, int lo, int index, const char* def)
{
const char* v;
lua_pushnumber(L,index);
lua_gettable(L,lo);
v = lua_isnil(L,-1) ? def : lua_tostring(L,-1);
lua_pop(L,1);
return v;
}
TOLUA_API void* tolua_tofielduserdata (lua_State* L, int lo, int index, void* def)
{
void* v;
lua_pushnumber(L,index);
lua_gettable(L,lo);
v = lua_isnil(L,-1) ? def : lua_touserdata(L,-1);
lua_pop(L,1);
return v;
}
TOLUA_API void* tolua_tofieldusertype (lua_State* L, int lo, int index, void* def)
{
void* v;
lua_pushnumber(L,index);
lua_gettable(L,lo);
v = lua_isnil(L,-1) ? def : (*(void **)(lua_touserdata(L, -1))); /* lua_unboxpointer(L,-1); */
lua_pop(L,1);
return v;
}
TOLUA_API int tolua_tofieldvalue (lua_State* L, int lo, int index, int def)
{
int v;
lua_pushnumber(L,index);
lua_gettable(L,lo);
v = lua_isnil(L,-1) ? def : lo;
lua_pop(L,1);
return v;
}
TOLUA_API int tolua_getfieldboolean (lua_State* L, int lo, int index, int def)
{
int v;
lua_pushnumber(L,index);
lua_gettable(L,lo);
v = lua_isnil(L,-1) ? 0 : lua_toboolean(L,-1);
lua_pop(L,1);
return v;
}
|
