lua.h 14 KB

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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. #ifndef lua_h
  8. #define lua_h
  9. #include <stdint.h>
  10. #include <stdarg.h>
  11. #include <stddef.h>
  12. #include <ctype.h>
  13. #include "luaconf.h"
  14. #define LUA_VERSION "Lua 5.1"
  15. #define LUA_RELEASE "Lua 5.1.4"
  16. #define LUA_VERSION_NUM 501
  17. #define LUA_COPYRIGHT "Copyright (C) 1994-2011 Lua.org, PUC-Rio"
  18. #define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
  19. /* mark for precompiled code (`<esc>Lua') */
  20. #define LUA_SIGNATURE "\033Lua"
  21. /* option for multiple returns in `lua_pcall' and `lua_call' */
  22. #define LUA_MULTRET (-1)
  23. /*
  24. ** pseudo-indices
  25. */
  26. #define LUA_REGISTRYINDEX (-10000)
  27. #define LUA_ENVIRONINDEX (-10001)
  28. #define LUA_GLOBALSINDEX (-10002)
  29. #define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i))
  30. /* thread status */
  31. #define LUA_OK 0
  32. #define LUA_YIELD 1
  33. #define LUA_ERRRUN 2
  34. #define LUA_ERRSYNTAX 3
  35. #define LUA_ERRMEM 4
  36. #define LUA_ERRERR 5
  37. typedef struct lua_State lua_State;
  38. typedef int (*lua_CFunction) (lua_State *L);
  39. /*
  40. ** functions that read/write blocks when loading/dumping Lua chunks
  41. */
  42. typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz);
  43. typedef int (*lua_Writer) (lua_State *L, const void* p, size_t sz, void* ud);
  44. /*
  45. ** prototype for memory-allocation functions
  46. */
  47. typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);
  48. /*
  49. ** basic types
  50. */
  51. #define LUA_TNONE (-1)
  52. #define LUA_TNIL 0
  53. #define LUA_TBOOLEAN 1
  54. #define LUA_TLIGHTUSERDATA 2
  55. #define LUA_TNUMBER 3
  56. #define LUA_TSTRING 4
  57. #define LUA_TTABLE 5
  58. #define LUA_TFUNCTION 6
  59. #define LUA_TUSERDATA 7
  60. #define LUA_TTHREAD 8
  61. #define LUA_TISROTABLE (1<<4)
  62. #define LUA_TISLIGHTFUNC (1<<5)
  63. #define LUA_TMASK 15
  64. #define LUA_TROTABLE (LUA_TTABLE + LUA_TISROTABLE)
  65. #define LUA_TLIGHTFUNCTION (LUA_TFUNCTION + LUA_TISLIGHTFUNC)
  66. /* minimum Lua stack available to a C function */
  67. #define LUA_MINSTACK 20
  68. /*
  69. ** generic extra include file
  70. */
  71. #if defined(LUA_USER_H)
  72. #include LUA_USER_H
  73. #endif
  74. #ifndef LUAI_OPTIMIZE_DEBUG
  75. #define LUAI_OPTIMIZE_DEBUG 2
  76. #endif
  77. /* type of numbers in Lua */
  78. typedef LUA_NUMBER lua_Number;
  79. typedef LUA_FLOAT lua_Float;
  80. /* type for integer functions */
  81. typedef LUA_INTEGER lua_Integer;
  82. typedef LUAI_UINT32 lua_Unsigned;
  83. /*
  84. ** state manipulation
  85. */
  86. LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud);
  87. LUA_API void (lua_close) (lua_State *L);
  88. LUA_API lua_State *(lua_newthread) (lua_State *L);
  89. LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);
  90. /*
  91. ** basic stack manipulation
  92. */
  93. LUA_API int (lua_absindex) (lua_State *L, int idx);
  94. LUA_API int (lua_gettop) (lua_State *L);
  95. LUA_API void (lua_settop) (lua_State *L, int idx);
  96. LUA_API void (lua_pushvalue) (lua_State *L, int idx);
  97. LUA_API void (lua_remove) (lua_State *L, int idx);
  98. LUA_API void (lua_insert) (lua_State *L, int idx);
  99. LUA_API void (lua_replace) (lua_State *L, int idx);
  100. LUA_API int (lua_checkstack) (lua_State *L, int sz);
  101. LUA_API void (lua_xmove) (lua_State *from, lua_State *to, int n);
  102. /*
  103. ** access functions (stack -> C)
  104. */
  105. LUA_API int (lua_isnumber) (lua_State *L, int idx);
  106. LUA_API int (lua_isstring) (lua_State *L, int idx);
  107. LUA_API int (lua_iscfunction) (lua_State *L, int idx);
  108. LUA_API int (lua_isuserdata) (lua_State *L, int idx);
  109. LUA_API int (lua_type) (lua_State *L, int idx);
  110. LUA_API int (lua_fulltype) (lua_State *L, int idx);
  111. LUA_API const char *(lua_typename) (lua_State *L, int tp);
  112. LUA_API int (lua_rawequal) (lua_State *L, int idx1, int idx2);
  113. #define LUA_OPEQ 0
  114. #define LUA_OPLT 1
  115. #define LUA_OPLE 2
  116. LUA_API int (lua_compare) (lua_State *L, int idx1, int idx2, int op);
  117. LUA_API lua_Number (lua_tonumber) (lua_State *L, int idx);
  118. LUA_API lua_Integer (lua_tointeger) (lua_State *L, int idx);
  119. LUA_API int (lua_toboolean) (lua_State *L, int idx);
  120. LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len);
  121. LUA_API size_t (lua_objlen) (lua_State *L, int idx);
  122. LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx);
  123. LUA_API void *(lua_touserdata) (lua_State *L, int idx);
  124. LUA_API lua_State *(lua_tothread) (lua_State *L, int idx);
  125. LUA_API const void *(lua_topointer) (lua_State *L, int idx);
  126. /*
  127. ** push functions (C -> stack)
  128. */
  129. LUA_API void (lua_pushnil) (lua_State *L);
  130. LUA_API void (lua_pushnumber) (lua_State *L, lua_Number n);
  131. LUA_API void (lua_pushinteger) (lua_State *L, lua_Integer n);
  132. LUA_API void (lua_pushlstring) (lua_State *L, const char *s, size_t l);
  133. LUA_API void (lua_pushstring) (lua_State *L, const char *s);
  134. LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt,
  135. va_list argp);
  136. LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...);
  137. LUA_API void (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n);
  138. LUA_API void (lua_pushboolean) (lua_State *L, int b);
  139. LUA_API void (lua_pushlightuserdata) (lua_State *L, void *p);
  140. LUA_API int (lua_pushthread) (lua_State *L);
  141. /*
  142. ** get functions (Lua -> stack)
  143. */
  144. LUA_API int (lua_gettable) (lua_State *L, int idx);
  145. LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k);
  146. LUA_API int (lua_rawget) (lua_State *L, int idx);
  147. LUA_API int (lua_rawgeti) (lua_State *L, int idx, int n);
  148. LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p);
  149. LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec);
  150. LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz);
  151. LUA_API int (lua_getmetatable) (lua_State *L, int objindex);
  152. LUA_API void (lua_getfenv) (lua_State *L, int idx);
  153. /*
  154. ** set functions (stack -> Lua)
  155. */
  156. LUA_API void (lua_settable) (lua_State *L, int idx);
  157. LUA_API void (lua_setfield) (lua_State *L, int idx, const char *k);
  158. LUA_API void (lua_rawset) (lua_State *L, int idx);
  159. LUA_API void (lua_rawseti) (lua_State *L, int idx, int n);
  160. LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p);
  161. LUA_API int (lua_setmetatable) (lua_State *L, int objindex);
  162. LUA_API int (lua_setfenv) (lua_State *L, int idx);
  163. /*
  164. ** `load' and `call' functions (load and run Lua code)
  165. */
  166. LUA_API void (lua_call) (lua_State *L, int nargs, int nresults);
  167. LUA_API int (lua_pcall) (lua_State *L, int nargs, int nresults, int errfunc);
  168. LUA_API int (lua_cpcall) (lua_State *L, lua_CFunction func, void *ud);
  169. LUA_API int (lua_load) (lua_State *L, lua_Reader reader, void *dt,
  170. const char *chunkname);
  171. LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int stripping);
  172. LUA_API int (lua_stripdebug) (lua_State *L, int stripping);
  173. /*
  174. ** coroutine functions
  175. */
  176. LUA_API int (lua_yield) (lua_State *L, int nresults);
  177. LUA_API int (lua_resume) (lua_State *L, int narg);
  178. LUA_API int (lua_status) (lua_State *L);
  179. /*
  180. ** garbage-collection function and options
  181. */
  182. #define LUA_GCSTOP 0
  183. #define LUA_GCRESTART 1
  184. #define LUA_GCCOLLECT 2
  185. #define LUA_GCCOUNT 3
  186. #define LUA_GCCOUNTB 4
  187. #define LUA_GCSTEP 5
  188. #define LUA_GCSETPAUSE 6
  189. #define LUA_GCSETSTEPMUL 7
  190. #define LUA_GCSETMEMLIMIT 8
  191. #define LUA_GCGETMEMLIMIT 9
  192. LUA_API int (lua_gc) (lua_State *L, int what, int data);
  193. /*
  194. ** miscellaneous functions
  195. */
  196. LUA_API int (lua_error) (lua_State *L);
  197. LUA_API int (lua_next) (lua_State *L, int idx);
  198. LUA_API void (lua_concat) (lua_State *L, int n);
  199. LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud);
  200. LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud);
  201. /*
  202. ** ===============================================================
  203. ** some useful macros
  204. ** ===============================================================
  205. */
  206. #define lua_pop(L,n) lua_settop(L, -(n)-1)
  207. #define lua_newtable(L) lua_createtable(L, 0, 0)
  208. #define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n)))
  209. #define lua_pushcfunction(L,f) lua_pushcclosure(L, (f), 0)
  210. #define lua_strlen(L,i) lua_objlen(L, (i))
  211. #define lua_isfunction(L,n) (lua_type(L, (n)) == LUA_TFUNCTION)
  212. #define lua_istable(L,n) (lua_type(L, (n)) == LUA_TTABLE)
  213. #define lua_islightuserdata(L,n) (lua_type(L, (n)) == LUA_TLIGHTUSERDATA)
  214. #define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL)
  215. #define lua_isboolean(L,n) (lua_type(L, (n)) == LUA_TBOOLEAN)
  216. #define lua_isthread(L,n) (lua_type(L, (n)) == LUA_TTHREAD)
  217. #define lua_isnone(L,n) (lua_type(L, (n)) == LUA_TNONE)
  218. #define lua_isnoneornil(L, n) (lua_type(L, (n)) <= 0)
  219. #define lua_pushliteral(L, s) \
  220. lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
  221. #define lua_setglobal(L,s) lua_setfield(L, LUA_GLOBALSINDEX, (s))
  222. #define lua_getglobal(L,s) lua_getfield(L, LUA_GLOBALSINDEX, (s))
  223. #define lua_tostring(L,i) lua_tolstring(L, (i), NULL)
  224. #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
  225. #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT)
  226. #define lua_pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n))
  227. #define lua_tounsigned(L,i) ((lua_Unsigned)lua_tointeger(L,i))
  228. /* error codes from cross-compiler returned by lua_dump */
  229. /* target integer is too small to hold a value */
  230. #define LUA_ERR_CC_INTOVERFLOW 101
  231. /* target lua_Number is integral but a constant is non-integer */
  232. #define LUA_ERR_CC_NOTINTEGER 102
  233. /*
  234. ** compatibility macros and functions
  235. */
  236. // BogdanM: modified for eLua interrupt support
  237. lua_State* lua_open(void);
  238. lua_State* lua_getstate(void);
  239. #define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)
  240. #define lua_getgccount(L) lua_gc(L, LUA_GCCOUNT, 0)
  241. #define lua_Chunkreader lua_Reader
  242. #define lua_Chunkwriter lua_Writer
  243. /* hack */
  244. LUA_API void lua_setlevel (lua_State *from, lua_State *to);
  245. /*
  246. ** {======================================================================
  247. ** Debug API
  248. ** =======================================================================
  249. */
  250. /*
  251. ** Event codes
  252. */
  253. #define LUA_HOOKCALL 0
  254. #define LUA_HOOKRET 1
  255. #define LUA_HOOKLINE 2
  256. #define LUA_HOOKCOUNT 3
  257. #define LUA_HOOKTAILRET 4
  258. /*
  259. ** Event masks
  260. */
  261. #define LUA_MASKCALL (1 << LUA_HOOKCALL)
  262. #define LUA_MASKRET (1 << LUA_HOOKRET)
  263. #define LUA_MASKLINE (1 << LUA_HOOKLINE)
  264. #define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT)
  265. typedef struct lua_Debug lua_Debug; /* activation record */
  266. /* Functions to be called by the debuger in specific events */
  267. typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
  268. LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar);
  269. LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar);
  270. LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n);
  271. LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n);
  272. LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n);
  273. LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n);
  274. LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count);
  275. LUA_API lua_Hook lua_gethook (lua_State *L);
  276. LUA_API int lua_gethookmask (lua_State *L);
  277. LUA_API int lua_gethookcount (lua_State *L);
  278. struct lua_Debug {
  279. int event;
  280. const char *name; /* (n) */
  281. const char *namewhat; /* (n) `global', `local', `field', `method' */
  282. const char *what; /* (S) `Lua', `C', `main', `tail' */
  283. const char *source; /* (S) */
  284. int currentline; /* (l) */
  285. int nups; /* (u) number of upvalues */
  286. int linedefined; /* (S) */
  287. int lastlinedefined; /* (S) */
  288. char short_src[LUA_IDSIZE]; /* (S) */
  289. /* private part */
  290. int i_ci; /* active function */
  291. };
  292. /* }====================================================================== */
  293. /* NodeMCU extensions to the standard API */
  294. typedef struct ROTable ROTable;
  295. typedef const struct ROTable_entry ROTable_entry;
  296. LUA_API void (lua_pushrotable) (lua_State *L, const ROTable *p);
  297. LUA_API void (lua_createrotable) (lua_State *L, ROTable *t, ROTable_entry *e, ROTable *mt);
  298. LUA_API int (lua_pushstringsarray) (lua_State *L, int opt);
  299. LUA_API int (lua_freeheap) (void);
  300. LUA_API void (lua_getlfsconfig) (lua_State *L, int *);
  301. LUA_API int (lua_pushlfsindex) (lua_State *L);
  302. #define EGC_NOT_ACTIVE 0 // EGC disabled
  303. #define EGC_ON_ALLOC_FAILURE 1 // run EGC on allocation failure
  304. #define EGC_ON_MEM_LIMIT 2 // run EGC when an upper memory limit is hit
  305. #define EGC_ALWAYS 4 // always run EGC before an allocation
  306. #ifdef LUA_USE_ESP
  307. #define LUA_QUEUE_APP 0
  308. #define LUA_QUEUE_UART 1
  309. /**DEBUG**/extern void dbg_printf(const char *fmt, ...)
  310. __attribute__ ((format (printf, 1, 2)));
  311. #define luaN_freearray(L,b,l) luaM_freearray(L,b,l,sizeof(*b))
  312. LUA_API void (lua_setegcmode) (lua_State *L, int mode, int limit);
  313. LUA_API void (lua_getegcinfo) (lua_State *L, int *totals);
  314. #else
  315. #define ICACHE_RODATA_ATTR
  316. #define dbg_printf printf
  317. #endif
  318. #ifdef DEVELOPMENT_USE_GDB
  319. LUALIB_API void (lua_debugbreak)(void);
  320. #else
  321. #define lua_debugbreak() (void)(0)
  322. #endif
  323. // EGC operations modes
  324. #define EGC_NOT_ACTIVE 0 // EGC disabled
  325. #define EGC_ON_ALLOC_FAILURE 1 // run EGC on allocation failure
  326. #define EGC_ON_MEM_LIMIT 2 // run EGC when an upper memory limit is hit
  327. #define EGC_ALWAYS 4 // always run EGC before an allocation
  328. void legc_set_mode(lua_State *L, int mode, int limit);
  329. /******************************************************************************
  330. * Copyright (C) 1994-2008 Lua.org, PUC-Rio. All rights reserved.
  331. *
  332. * Permission is hereby granted, free of charge, to any person obtaining
  333. * a copy of this software and associated documentation files (the
  334. * "Software"), to deal in the Software without restriction, including
  335. * without limitation the rights to use, copy, modify, merge, publish,
  336. * distribute, sublicense, and/or sell copies of the Software, and to
  337. * permit persons to whom the Software is furnished to do so, subject to
  338. * the following conditions:
  339. *
  340. * The above copyright notice and this permission notice shall be
  341. * included in all copies or substantial portions of the Software.
  342. *
  343. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  344. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  345. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  346. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  347. * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  348. * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  349. * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  350. ******************************************************************************/
  351. #endif