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1 | /* |
2 | ** $Id: lua.h,v 1.218.1.5 2008/08/06 13:30:12 roberto Exp $ | |
3 | ** Lua - An Extensible Extension Language | |
4 | ** Lua.org, PUC-Rio, Brazil (http://www.lua.org) | |
5 | ** See Copyright Notice at the end of this file | |
6 | */ | |
7 | ||
8 | ||
9 | #ifndef lua_h | |
10 | #define lua_h | |
11 | ||
12 | #include <stdarg.h> | |
13 | #include <stddef.h> | |
14 | ||
15 | ||
16 | #include "luaconf.h" | |
17 | ||
18 | ||
19 | #define LUA_VERSION "Lua 5.1" | |
20 | #define LUA_RELEASE "Lua 5.1.4" | |
21 | #define LUA_VERSION_NUM 501 | |
22 | #define LUA_COPYRIGHT "Copyright (C) 1994-2008 Lua.org, PUC-Rio" | |
23 | #define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes" | |
24 | ||
25 | ||
26 | /* mark for precompiled code (`<esc>Lua') */ | |
27 | #define LUA_SIGNATURE "\033Lua" | |
28 | ||
29 | /* option for multiple returns in `lua_pcall' and `lua_call' */ | |
30 | #define LUA_MULTRET (-1) | |
31 | ||
32 | ||
33 | /* | |
34 | ** pseudo-indices | |
35 | */ | |
36 | #define LUA_REGISTRYINDEX (-10000) | |
37 | #define LUA_ENVIRONINDEX (-10001) | |
38 | #define LUA_GLOBALSINDEX (-10002) | |
39 | #define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i)) | |
40 | ||
41 | ||
42 | /* thread status; 0 is OK */ | |
43 | #define LUA_YIELD 1 | |
44 | #define LUA_ERRRUN 2 | |
45 | #define LUA_ERRSYNTAX 3 | |
46 | #define LUA_ERRMEM 4 | |
47 | #define LUA_ERRERR 5 | |
48 | ||
49 | ||
50 | typedef struct lua_State lua_State; | |
51 | ||
52 | typedef int (*lua_CFunction) (lua_State *L); | |
53 | ||
54 | ||
55 | /* | |
56 | ** functions that read/write blocks when loading/dumping Lua chunks | |
57 | */ | |
58 | typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz); | |
59 | ||
60 | typedef int (*lua_Writer) (lua_State *L, const void* p, size_t sz, void* ud); | |
61 | ||
62 | ||
63 | /* | |
64 | ** prototype for memory-allocation functions | |
65 | */ | |
66 | typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize); | |
67 | ||
68 | ||
69 | /* | |
70 | ** basic types | |
71 | */ | |
72 | #define LUA_TNONE (-1) | |
73 | ||
74 | #define LUA_TNIL 0 | |
75 | #define LUA_TBOOLEAN 1 | |
76 | #define LUA_TLIGHTUSERDATA 2 | |
77 | #define LUA_TNUMBER 3 | |
78 | #define LUA_TSTRING 4 | |
79 | #define LUA_TTABLE 5 | |
80 | #define LUA_TFUNCTION 6 | |
81 | #define LUA_TUSERDATA 7 | |
82 | #define LUA_TTHREAD 8 | |
83 | ||
84 | ||
85 | ||
86 | /* minimum Lua stack available to a C function */ | |
87 | #define LUA_MINSTACK 20 | |
88 | ||
89 | ||
90 | /* | |
91 | ** generic extra include file | |
92 | */ | |
93 | #if defined(LUA_USER_H) | |
94 | #include LUA_USER_H | |
95 | #endif | |
96 | ||
97 | ||
98 | /* type of numbers in Lua */ | |
99 | typedef LUA_NUMBER lua_Number; | |
100 | ||
101 | ||
102 | /* type for integer functions */ | |
103 | typedef LUA_INTEGER lua_Integer; | |
104 | ||
105 | ||
106 | ||
107 | /* | |
108 | ** state manipulation | |
109 | */ | |
110 | LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud); | |
111 | LUA_API void (lua_close) (lua_State *L); | |
112 | LUA_API lua_State *(lua_newthread) (lua_State *L); | |
113 | ||
114 | LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf); | |
115 | ||
116 | ||
117 | /* | |
118 | ** basic stack manipulation | |
119 | */ | |
120 | LUA_API int (lua_gettop) (lua_State *L); | |
121 | LUA_API void (lua_settop) (lua_State *L, int idx); | |
122 | LUA_API void (lua_pushvalue) (lua_State *L, int idx); | |
123 | LUA_API void (lua_remove) (lua_State *L, int idx); | |
124 | LUA_API void (lua_insert) (lua_State *L, int idx); | |
125 | LUA_API void (lua_replace) (lua_State *L, int idx); | |
126 | LUA_API int (lua_checkstack) (lua_State *L, int sz); | |
127 | ||
128 | LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n); | |
129 | ||
130 | ||
131 | /* | |
132 | ** access functions (stack -> C) | |
133 | */ | |
134 | ||
135 | LUA_API int (lua_isnumber) (lua_State *L, int idx); | |
136 | LUA_API int (lua_isstring) (lua_State *L, int idx); | |
137 | LUA_API int (lua_iscfunction) (lua_State *L, int idx); | |
138 | LUA_API int (lua_isuserdata) (lua_State *L, int idx); | |
139 | LUA_API int (lua_type) (lua_State *L, int idx); | |
140 | LUA_API const char *(lua_typename) (lua_State *L, int tp); | |
141 | ||
142 | LUA_API int (lua_equal) (lua_State *L, int idx1, int idx2); | |
143 | LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2); | |
144 | LUA_API int (lua_lessthan) (lua_State *L, int idx1, int idx2); | |
145 | ||
146 | LUA_API lua_Number (lua_tonumber) (lua_State *L, int idx); | |
147 | LUA_API lua_Integer (lua_tointeger) (lua_State *L, int idx); | |
148 | LUA_API int (lua_toboolean) (lua_State *L, int idx); | |
149 | LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len); | |
150 | LUA_API size_t (lua_objlen) (lua_State *L, int idx); | |
151 | LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx); | |
152 | LUA_API void *(lua_touserdata) (lua_State *L, int idx); | |
153 | LUA_API lua_State *(lua_tothread) (lua_State *L, int idx); | |
154 | LUA_API const void *(lua_topointer) (lua_State *L, int idx); | |
155 | ||
156 | ||
157 | /* | |
158 | ** push functions (C -> stack) | |
159 | */ | |
160 | LUA_API void (lua_pushnil) (lua_State *L); | |
161 | LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n); | |
162 | LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n); | |
163 | LUA_API void (lua_pushlstring) (lua_State *L, const char *s, size_t l); | |
164 | LUA_API void (lua_pushstring) (lua_State *L, const char *s); | |
165 | LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt, | |
166 | va_list argp); | |
167 | LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...); | |
168 | LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n); | |
169 | LUA_API void (lua_pushboolean) (lua_State *L, int b); | |
170 | LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p); | |
171 | LUA_API int (lua_pushthread) (lua_State *L); | |
172 | ||
173 | ||
174 | /* | |
175 | ** get functions (Lua -> stack) | |
176 | */ | |
177 | LUA_API void (lua_gettable) (lua_State *L, int idx); | |
178 | LUA_API void (lua_getfield) (lua_State *L, int idx, const char *k); | |
179 | LUA_API void (lua_rawget) (lua_State *L, int idx); | |
180 | LUA_API void (lua_rawgeti) (lua_State *L, int idx, int n); | |
181 | LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec); | |
182 | LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz); | |
183 | LUA_API int (lua_getmetatable) (lua_State *L, int objindex); | |
184 | LUA_API void (lua_getfenv) (lua_State *L, int idx); | |
185 | ||
186 | ||
187 | /* | |
188 | ** set functions (stack -> Lua) | |
189 | */ | |
190 | LUA_API void (lua_settable) (lua_State *L, int idx); | |
191 | LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k); | |
192 | LUA_API void (lua_rawset) (lua_State *L, int idx); | |
193 | LUA_API void (lua_rawseti) (lua_State *L, int idx, int n); | |
194 | LUA_API int (lua_setmetatable) (lua_State *L, int objindex); | |
195 | LUA_API int (lua_setfenv) (lua_State *L, int idx); | |
196 | ||
197 | ||
198 | /* | |
199 | ** `load' and `call' functions (load and run Lua code) | |
200 | */ | |
201 | LUA_API void (lua_call) (lua_State *L, int nargs, int nresults); | |
202 | LUA_API int (lua_pcall) (lua_State *L, int nargs, int nresults, int errfunc); | |
203 | LUA_API int (lua_cpcall) (lua_State *L, lua_CFunction func, void *ud); | |
204 | LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt, | |
205 | const char *chunkname); | |
206 | ||
207 | LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data); | |
208 | ||
209 | ||
210 | /* | |
211 | ** coroutine functions | |
212 | */ | |
213 | LUA_API int (lua_yield) (lua_State *L, int nresults); | |
214 | LUA_API int (lua_resume) (lua_State *L, int narg); | |
215 | LUA_API int (lua_status) (lua_State *L); | |
216 | ||
217 | /* | |
218 | ** garbage-collection function and options | |
219 | */ | |
220 | ||
221 | #define LUA_GCSTOP 0 | |
222 | #define LUA_GCRESTART 1 | |
223 | #define LUA_GCCOLLECT 2 | |
224 | #define LUA_GCCOUNT 3 | |
225 | #define LUA_GCCOUNTB 4 | |
226 | #define LUA_GCSTEP 5 | |
227 | #define LUA_GCSETPAUSE 6 | |
228 | #define LUA_GCSETSTEPMUL 7 | |
229 | ||
230 | LUA_API int (lua_gc) (lua_State *L, int what, int data); | |
231 | ||
232 | ||
233 | /* | |
234 | ** miscellaneous functions | |
235 | */ | |
236 | ||
237 | LUA_API int (lua_error) (lua_State *L); | |
238 | ||
239 | LUA_API int (lua_next) (lua_State *L, int idx); | |
240 | ||
241 | LUA_API void (lua_concat) (lua_State *L, int n); | |
242 | ||
243 | LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud); | |
244 | LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud); | |
245 | ||
246 | ||
247 | ||
248 | /* | |
249 | ** =============================================================== | |
250 | ** some useful macros | |
251 | ** =============================================================== | |
252 | */ | |
253 | ||
254 | #define lua_pop(L,n) lua_settop(L, -(n)-1) | |
255 | ||
256 | #define lua_newtable(L) lua_createtable(L, 0, 0) | |
257 | ||
258 | #define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n))) | |
259 | ||
260 | #define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0) | |
261 | ||
262 | #define lua_strlen(L,i) lua_objlen(L, (i)) | |
263 | ||
264 | #define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION) | |
265 | #define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE) | |
266 | #define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA) | |
267 | #define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL) | |
268 | #define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN) | |
269 | #define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD) | |
270 | #define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE) | |
271 | #define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0) | |
272 | ||
273 | #define lua_pushliteral(L, s) \ | |
274 | lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1) | |
275 | ||
276 | #define lua_setglobal(L,s) lua_setfield(L, LUA_GLOBALSINDEX, (s)) | |
277 | #define lua_getglobal(L,s) lua_getfield(L, LUA_GLOBALSINDEX, (s)) | |
278 | ||
279 | #define lua_tostring(L,i) lua_tolstring(L, (i), NULL) | |
280 | ||
281 | ||
282 | ||
283 | /* | |
284 | ** compatibility macros and functions | |
285 | */ | |
286 | ||
287 | #define lua_open() luaL_newstate() | |
288 | ||
289 | #define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX) | |
290 | ||
291 | #define lua_getgccount(L) lua_gc(L, LUA_GCCOUNT, 0) | |
292 | ||
293 | #define lua_Chunkreader lua_Reader | |
294 | #define lua_Chunkwriter lua_Writer | |
295 | ||
296 | ||
297 | /* hack */ | |
298 | LUA_API void lua_setlevel (lua_State *from, lua_State *to); | |
299 | ||
300 | ||
301 | /* | |
302 | ** {====================================================================== | |
303 | ** Debug API | |
304 | ** ======================================================================= | |
305 | */ | |
306 | ||
307 | ||
308 | /* | |
309 | ** Event codes | |
310 | */ | |
311 | #define LUA_HOOKCALL 0 | |
312 | #define LUA_HOOKRET 1 | |
313 | #define LUA_HOOKLINE 2 | |
314 | #define LUA_HOOKCOUNT 3 | |
315 | #define LUA_HOOKTAILRET 4 | |
316 | ||
317 | ||
318 | /* | |
319 | ** Event masks | |
320 | */ | |
321 | #define LUA_MASKCALL (1 << LUA_HOOKCALL) | |
322 | #define LUA_MASKRET (1 << LUA_HOOKRET) | |
323 | #define LUA_MASKLINE (1 << LUA_HOOKLINE) | |
324 | #define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT) | |
325 | ||
326 | typedef struct lua_Debug lua_Debug; /* activation record */ | |
327 | ||
328 | ||
329 | /* Functions to be called by the debuger in specific events */ | |
330 | typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar); | |
331 | ||
332 | ||
333 | LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar); | |
334 | LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar); | |
335 | LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n); | |
336 | LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n); | |
337 | LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n); | |
338 | LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n); | |
339 | ||
340 | LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count); | |
341 | LUA_API lua_Hook lua_gethook (lua_State *L); | |
342 | LUA_API int lua_gethookmask (lua_State *L); | |
343 | LUA_API int lua_gethookcount (lua_State *L); | |
344 | ||
345 | ||
346 | struct lua_Debug { | |
347 | int event; | |
348 | const char *name; /* (n) */ | |
349 | const char *namewhat; /* (n) `global', `local', `field', `method' */ | |
350 | const char *what; /* (S) `Lua', `C', `main', `tail' */ | |
351 | const char *source; /* (S) */ | |
352 | int currentline; /* (l) */ | |
353 | int nups; /* (u) number of upvalues */ | |
354 | int linedefined; /* (S) */ | |
355 | int lastlinedefined; /* (S) */ | |
356 | char short_src[LUA_IDSIZE]; /* (S) */ | |
357 | /* private part */ | |
358 | int i_ci; /* active function */ | |
359 | }; | |
360 | ||
361 | /* }====================================================================== */ | |
362 | ||
363 | ||
364 | /****************************************************************************** | |
365 | * Copyright (C) 1994-2008 Lua.org, PUC-Rio. All rights reserved. | |
366 | * | |
367 | * Permission is hereby granted, free of charge, to any person obtaining | |
368 | * a copy of this software and associated documentation files (the | |
369 | * "Software"), to deal in the Software without restriction, including | |
370 | * without limitation the rights to use, copy, modify, merge, publish, | |
371 | * distribute, sublicense, and/or sell copies of the Software, and to | |
372 | * permit persons to whom the Software is furnished to do so, subject to | |
373 | * the following conditions: | |
374 | * | |
375 | * The above copyright notice and this permission notice shall be | |
376 | * included in all copies or substantial portions of the Software. | |
377 | * | |
378 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
379 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
380 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
381 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | |
382 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | |
383 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | |
384 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
385 | ******************************************************************************/ | |
386 | ||
387 | ||
388 | #endif |