source: bootcd/isolinux/syslinux-6.03/com32/lua/src/lauxlib.h @ dd1be7c

Last change on this file since dd1be7c was e16e8f2, checked in by Edwin Eefting <edwin@datux.nl>, 3 years ago

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File size: 7.2 KB
Line 
1/*
2** $Id: lauxlib.h,v 1.120.1.1 2013/04/12 18:48:47 roberto Exp $
3** Auxiliary functions for building Lua libraries
4** See Copyright Notice in lua.h
5*/
6
7
8#ifndef lauxlib_h
9#define lauxlib_h
10
11
12#include <stddef.h>
13#include <stdio.h>
14
15#include "lua.h"
16
17
18
19/* extra error code for `luaL_load' */
20#define LUA_ERRFILE     (LUA_ERRERR+1)
21
22
23typedef struct luaL_Reg {
24  const char *name;
25  lua_CFunction func;
26} luaL_Reg;
27
28
29LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver);
30#define luaL_checkversion(L)    luaL_checkversion_(L, LUA_VERSION_NUM)
31
32LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
33LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
34LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);
35LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg);
36LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg,
37                                                          size_t *l);
38LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,
39                                          const char *def, size_t *l);
40LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg);
41LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def);
42
43LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
44LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
45                                          lua_Integer def);
46LUALIB_API lua_Unsigned (luaL_checkunsigned) (lua_State *L, int numArg);
47LUALIB_API lua_Unsigned (luaL_optunsigned) (lua_State *L, int numArg,
48                                            lua_Unsigned def);
49
50LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
51LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
52LUALIB_API void (luaL_checkany) (lua_State *L, int narg);
53
54LUALIB_API int   (luaL_newmetatable) (lua_State *L, const char *tname);
55LUALIB_API void  (luaL_setmetatable) (lua_State *L, const char *tname);
56LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname);
57LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
58
59LUALIB_API void (luaL_where) (lua_State *L, int lvl);
60LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
61
62LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def,
63                                   const char *const lst[]);
64
65LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);
66LUALIB_API int (luaL_execresult) (lua_State *L, int stat);
67
68/* pre-defined references */
69#define LUA_NOREF       (-2)
70#define LUA_REFNIL      (-1)
71
72LUALIB_API int (luaL_ref) (lua_State *L, int t);
73LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
74
75LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename,
76                                               const char *mode);
77
78#define luaL_loadfile(L,f)      luaL_loadfilex(L,f,NULL)
79
80LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz,
81                                   const char *name, const char *mode);
82LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
83
84LUALIB_API lua_State *(luaL_newstate) (void);
85
86LUALIB_API int (luaL_len) (lua_State *L, int idx);
87
88LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
89                                                  const char *r);
90
91LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup);
92
93LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname);
94
95LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1,
96                                  const char *msg, int level);
97
98LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
99                                 lua_CFunction openf, int glb);
100
101/*
102** ===============================================================
103** some useful macros
104** ===============================================================
105*/
106
107
108#define luaL_newlibtable(L,l)   \
109  lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
110
111#define luaL_newlib(L,l)        (luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
112
113#define luaL_argcheck(L, cond,numarg,extramsg)  \
114                ((void)((cond) || luaL_argerror(L, (numarg), (extramsg))))
115#define luaL_checkstring(L,n)   (luaL_checklstring(L, (n), NULL))
116#define luaL_optstring(L,n,d)   (luaL_optlstring(L, (n), (d), NULL))
117#define luaL_checkint(L,n)      ((int)luaL_checkinteger(L, (n)))
118#define luaL_optint(L,n,d)      ((int)luaL_optinteger(L, (n), (d)))
119#define luaL_checklong(L,n)     ((long)luaL_checkinteger(L, (n)))
120#define luaL_optlong(L,n,d)     ((long)luaL_optinteger(L, (n), (d)))
121
122#define luaL_typename(L,i)      lua_typename(L, lua_type(L,(i)))
123
124#define luaL_dofile(L, fn) \
125        (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
126
127#define luaL_dostring(L, s) \
128        (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
129
130#define luaL_getmetatable(L,n)  (lua_getfield(L, LUA_REGISTRYINDEX, (n)))
131
132#define luaL_opt(L,f,n,d)       (lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
133
134#define luaL_loadbuffer(L,s,sz,n)       luaL_loadbufferx(L,s,sz,n,NULL)
135
136
137/*
138** {======================================================
139** Generic Buffer manipulation
140** =======================================================
141*/
142
143typedef struct luaL_Buffer {
144  char *b;  /* buffer address */
145  size_t size;  /* buffer size */
146  size_t n;  /* number of characters in buffer */
147  lua_State *L;
148  char initb[LUAL_BUFFERSIZE];  /* initial buffer */
149} luaL_Buffer;
150
151
152#define luaL_addchar(B,c) \
153  ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \
154   ((B)->b[(B)->n++] = (c)))
155
156#define luaL_addsize(B,s)       ((B)->n += (s))
157
158LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
159LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);
160LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
161LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
162LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
163LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
164LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz);
165LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz);
166
167#define luaL_prepbuffer(B)      luaL_prepbuffsize(B, LUAL_BUFFERSIZE)
168
169/* }====================================================== */
170
171
172
173/*
174** {======================================================
175** File handles for IO library
176** =======================================================
177*/
178
179/*
180** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and
181** initial structure 'luaL_Stream' (it may contain other fields
182** after that initial structure).
183*/
184
185#define LUA_FILEHANDLE          "FILE*"
186
187
188typedef struct luaL_Stream {
189  FILE *f;  /* stream (NULL for incompletely created streams) */
190  lua_CFunction closef;  /* to close stream (NULL for closed streams) */
191} luaL_Stream;
192
193/* }====================================================== */
194
195
196
197/* compatibility with old module system */
198#if defined(LUA_COMPAT_MODULE)
199
200LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname,
201                                   int sizehint);
202LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,
203                                const luaL_Reg *l, int nup);
204
205#define luaL_register(L,n,l)    (luaL_openlib(L,(n),(l),0))
206
207#endif
208
209
210#endif
211
212
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