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  1. /*
  2. ** $Id: lua.h $
  3. ** Lua - A Scripting 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_MAJOR       "5"
  20. #define LUA_VERSION_MINOR       "4"
  21. #define LUA_VERSION_RELEASE     "4"
  22.  
  23. #define LUA_VERSION_NUM                 504
  24. #define LUA_VERSION_RELEASE_NUM         (LUA_VERSION_NUM * 100 + 4)
  25.  
  26. #define LUA_VERSION     "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
  27. #define LUA_RELEASE     LUA_VERSION "." LUA_VERSION_RELEASE
  28. #define LUA_COPYRIGHT   LUA_RELEASE "  Copyright (C) 1994-2022 Lua.org, PUC-Rio"
  29. #define LUA_AUTHORS     "R. Ierusalimschy, L. H. de Figueiredo, W. Celes"
  30.  
  31.  
  32. /* mark for precompiled code ('<esc>Lua') */
  33. #define LUA_SIGNATURE   "\x1bLua"
  34.  
  35. /* option for multiple returns in 'lua_pcall' and 'lua_call' */
  36. #define LUA_MULTRET     (-1)
  37.  
  38.  
  39. /*
  40. ** Pseudo-indices
  41. ** (-LUAI_MAXSTACK is the minimum valid index; we keep some free empty
  42. ** space after that to help overflow detection)
  43. */
  44. #define LUA_REGISTRYINDEX       (-LUAI_MAXSTACK - 1000)
  45. #define lua_upvalueindex(i)     (LUA_REGISTRYINDEX - (i))
  46.  
  47.  
  48. /* thread status */
  49. #define LUA_OK          0
  50. #define LUA_YIELD       1
  51. #define LUA_ERRRUN      2
  52. #define LUA_ERRSYNTAX   3
  53. #define LUA_ERRMEM      4
  54. #define LUA_ERRERR      5
  55.  
  56.  
  57. typedef struct lua_State lua_State;
  58.  
  59.  
  60. /*
  61. ** basic types
  62. */
  63. #define LUA_TNONE               (-1)
  64.  
  65. #define LUA_TNIL                0
  66. #define LUA_TBOOLEAN            1
  67. #define LUA_TLIGHTUSERDATA      2
  68. #define LUA_TNUMBER             3
  69. #define LUA_TSTRING             4
  70. #define LUA_TTABLE              5
  71. #define LUA_TFUNCTION           6
  72. #define LUA_TUSERDATA           7
  73. #define LUA_TTHREAD             8
  74.  
  75. #define LUA_NUMTYPES            9
  76.  
  77.  
  78.  
  79. /* minimum Lua stack available to a C function */
  80. #define LUA_MINSTACK    20
  81.  
  82.  
  83. /* predefined values in the registry */
  84. #define LUA_RIDX_MAINTHREAD     1
  85. #define LUA_RIDX_GLOBALS        2
  86. #define LUA_RIDX_LAST           LUA_RIDX_GLOBALS
  87.  
  88.  
  89. /* type of numbers in Lua */
  90. typedef LUA_NUMBER lua_Number;
  91.  
  92.  
  93. /* type for integer functions */
  94. typedef LUA_INTEGER lua_Integer;
  95.  
  96. /* unsigned integer type */
  97. typedef LUA_UNSIGNED lua_Unsigned;
  98.  
  99. /* type for continuation-function contexts */
  100. typedef LUA_KCONTEXT lua_KContext;
  101.  
  102.  
  103. /*
  104. ** Type for C functions registered with Lua
  105. */
  106. typedef int (*lua_CFunction) (lua_State *L);
  107.  
  108. /*
  109. ** Type for continuation functions
  110. */
  111. typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx);
  112.  
  113.  
  114. /*
  115. ** Type for functions that read/write blocks when loading/dumping Lua chunks
  116. */
  117. typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz);
  118.  
  119. typedef int (*lua_Writer) (lua_State *L, const void *p, size_t sz, void *ud);
  120.  
  121.  
  122. /*
  123. ** Type for memory-allocation functions
  124. */
  125. typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);
  126.  
  127.  
  128. /*
  129. ** Type for warning functions
  130. */
  131. typedef void (*lua_WarnFunction) (void *ud, const char *msg, int tocont);
  132.  
  133.  
  134.  
  135.  
  136. /*
  137. ** generic extra include file
  138. */
  139. #if defined(LUA_USER_H)
  140. #include LUA_USER_H
  141. #endif
  142.  
  143.  
  144. /*
  145. ** RCS ident string
  146. */
  147. extern const char lua_ident[];
  148.  
  149.  
  150. /*
  151. ** state manipulation
  152. */
  153. LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud);
  154. LUA_API void       (lua_close) (lua_State *L);
  155. LUA_API lua_State *(lua_newthread) (lua_State *L);
  156. LUA_API int        (lua_resetthread) (lua_State *L);
  157.  
  158. LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);
  159.  
  160.  
  161. LUA_API lua_Number (lua_version) (lua_State *L);
  162.  
  163.  
  164. /*
  165. ** basic stack manipulation
  166. */
  167. LUA_API int   (lua_absindex) (lua_State *L, int idx);
  168. LUA_API int   (lua_gettop) (lua_State *L);
  169. LUA_API void  (lua_settop) (lua_State *L, int idx);
  170. LUA_API void  (lua_pushvalue) (lua_State *L, int idx);
  171. LUA_API void  (lua_rotate) (lua_State *L, int idx, int n);
  172. LUA_API void  (lua_copy) (lua_State *L, int fromidx, int toidx);
  173. LUA_API int   (lua_checkstack) (lua_State *L, int n);
  174.  
  175. LUA_API void  (lua_xmove) (lua_State *from, lua_State *to, int n);
  176.  
  177.  
  178. /*
  179. ** access functions (stack -> C)
  180. */
  181.  
  182. LUA_API int             (lua_isnumber) (lua_State *L, int idx);
  183. LUA_API int             (lua_isstring) (lua_State *L, int idx);
  184. LUA_API int             (lua_iscfunction) (lua_State *L, int idx);
  185. LUA_API int             (lua_isinteger) (lua_State *L, int idx);
  186. LUA_API int             (lua_isuserdata) (lua_State *L, int idx);
  187. LUA_API int             (lua_type) (lua_State *L, int idx);
  188. LUA_API const char     *(lua_typename) (lua_State *L, int tp);
  189.  
  190. LUA_API lua_Number      (lua_tonumberx) (lua_State *L, int idx, int *isnum);
  191. LUA_API lua_Integer     (lua_tointegerx) (lua_State *L, int idx, int *isnum);
  192. LUA_API int             (lua_toboolean) (lua_State *L, int idx);
  193. LUA_API const char     *(lua_tolstring) (lua_State *L, int idx, size_t *len);
  194. LUA_API lua_Unsigned    (lua_rawlen) (lua_State *L, int idx);
  195. LUA_API lua_CFunction   (lua_tocfunction) (lua_State *L, int idx);
  196. LUA_API void           *(lua_touserdata) (lua_State *L, int idx);
  197. LUA_API lua_State      *(lua_tothread) (lua_State *L, int idx);
  198. LUA_API const void     *(lua_topointer) (lua_State *L, int idx);
  199.  
  200.  
  201. /*
  202. ** Comparison and arithmetic functions
  203. */
  204.  
  205. #define LUA_OPADD       0       /* ORDER TM, ORDER OP */
  206. #define LUA_OPSUB       1
  207. #define LUA_OPMUL       2
  208. #define LUA_OPMOD       3
  209. #define LUA_OPPOW       4
  210. #define LUA_OPDIV       5
  211. #define LUA_OPIDIV      6
  212. #define LUA_OPBAND      7
  213. #define LUA_OPBOR       8
  214. #define LUA_OPBXOR      9
  215. #define LUA_OPSHL       10
  216. #define LUA_OPSHR       11
  217. #define LUA_OPUNM       12
  218. #define LUA_OPBNOT      13
  219.  
  220. LUA_API void  (lua_arith) (lua_State *L, int op);
  221.  
  222. #define LUA_OPEQ        0
  223. #define LUA_OPLT        1
  224. #define LUA_OPLE        2
  225.  
  226. LUA_API int   (lua_rawequal) (lua_State *L, int idx1, int idx2);
  227. LUA_API int   (lua_compare) (lua_State *L, int idx1, int idx2, int op);
  228.  
  229.  
  230. /*
  231. ** push functions (C -> stack)
  232. */
  233. LUA_API void        (lua_pushnil) (lua_State *L);
  234. LUA_API void        (lua_pushnumber) (lua_State *L, lua_Number n);
  235. LUA_API void        (lua_pushinteger) (lua_State *L, lua_Integer n);
  236. LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len);
  237. LUA_API const char *(lua_pushstring) (lua_State *L, const char *s);
  238. LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt,
  239.                                                       va_list argp);
  240. LUA_API const char *(lua_pushfstring) (lua_State *L, const char *fmt, ...);
  241. LUA_API void  (lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n);
  242. LUA_API void  (lua_pushboolean) (lua_State *L, int b);
  243. LUA_API void  (lua_pushlightuserdata) (lua_State *L, void *p);
  244. LUA_API int   (lua_pushthread) (lua_State *L);
  245.  
  246.  
  247. /*
  248. ** get functions (Lua -> stack)
  249. */
  250. LUA_API int (lua_getglobal) (lua_State *L, const char *name);
  251. LUA_API int (lua_gettable) (lua_State *L, int idx);
  252. LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k);
  253. LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n);
  254. LUA_API int (lua_rawget) (lua_State *L, int idx);
  255. LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n);
  256. LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p);
  257.  
  258. LUA_API void  (lua_createtable) (lua_State *L, int narr, int nrec);
  259. LUA_API void *(lua_newuserdatauv) (lua_State *L, size_t sz, int nuvalue);
  260. LUA_API int   (lua_getmetatable) (lua_State *L, int objindex);
  261. LUA_API int  (lua_getiuservalue) (lua_State *L, int idx, int n);
  262.  
  263.  
  264. /*
  265. ** set functions (stack -> Lua)
  266. */
  267. LUA_API void  (lua_setglobal) (lua_State *L, const char *name);
  268. LUA_API void  (lua_settable) (lua_State *L, int idx);
  269. LUA_API void  (lua_setfield) (lua_State *L, int idx, const char *k);
  270. LUA_API void  (lua_seti) (lua_State *L, int idx, lua_Integer n);
  271. LUA_API void  (lua_rawset) (lua_State *L, int idx);
  272. LUA_API void  (lua_rawseti) (lua_State *L, int idx, lua_Integer n);
  273. LUA_API void  (lua_rawsetp) (lua_State *L, int idx, const void *p);
  274. LUA_API int   (lua_setmetatable) (lua_State *L, int objindex);
  275. LUA_API int   (lua_setiuservalue) (lua_State *L, int idx, int n);
  276.  
  277.  
  278. /*
  279. ** 'load' and 'call' functions (load and run Lua code)
  280. */
  281. LUA_API void  (lua_callk) (lua_State *L, int nargs, int nresults,
  282.                            lua_KContext ctx, lua_KFunction k);
  283. #define lua_call(L,n,r)         lua_callk(L, (n), (r), 0, NULL)
  284.  
  285. LUA_API int   (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc,
  286.                             lua_KContext ctx, lua_KFunction k);
  287. #define lua_pcall(L,n,r,f)      lua_pcallk(L, (n), (r), (f), 0, NULL)
  288.  
  289. LUA_API int   (lua_load) (lua_State *L, lua_Reader reader, void *dt,
  290.                           const char *chunkname, const char *mode);
  291.  
  292. LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip);
  293.  
  294.  
  295. /*
  296. ** coroutine functions
  297. */
  298. LUA_API int  (lua_yieldk)     (lua_State *L, int nresults, lua_KContext ctx,
  299.                                lua_KFunction k);
  300. LUA_API int  (lua_resume)     (lua_State *L, lua_State *from, int narg,
  301.                                int *nres);
  302. LUA_API int  (lua_status)     (lua_State *L);
  303. LUA_API int (lua_isyieldable) (lua_State *L);
  304.  
  305. #define lua_yield(L,n)          lua_yieldk(L, (n), 0, NULL)
  306.  
  307.  
  308. /*
  309. ** Warning-related functions
  310. */
  311. LUA_API void (lua_setwarnf) (lua_State *L, lua_WarnFunction f, void *ud);
  312. LUA_API void (lua_warning)  (lua_State *L, const char *msg, int tocont);
  313.  
  314.  
  315. /*
  316. ** garbage-collection function and options
  317. */
  318.  
  319. #define LUA_GCSTOP              0
  320. #define LUA_GCRESTART           1
  321. #define LUA_GCCOLLECT           2
  322. #define LUA_GCCOUNT             3
  323. #define LUA_GCCOUNTB            4
  324. #define LUA_GCSTEP              5
  325. #define LUA_GCSETPAUSE          6
  326. #define LUA_GCSETSTEPMUL        7
  327. #define LUA_GCISRUNNING         9
  328. #define LUA_GCGEN               10
  329. #define LUA_GCINC               11
  330.  
  331. LUA_API int (lua_gc) (lua_State *L, int what, ...);
  332.  
  333.  
  334. /*
  335. ** miscellaneous functions
  336. */
  337.  
  338. LUA_API int   (lua_error) (lua_State *L);
  339.  
  340. LUA_API int   (lua_next) (lua_State *L, int idx);
  341.  
  342. LUA_API void  (lua_concat) (lua_State *L, int n);
  343. LUA_API void  (lua_len)    (lua_State *L, int idx);
  344.  
  345. LUA_API size_t   (lua_stringtonumber) (lua_State *L, const char *s);
  346.  
  347. LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud);
  348. LUA_API void      (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
  349.  
  350. LUA_API void (lua_toclose) (lua_State *L, int idx);
  351. LUA_API void (lua_closeslot) (lua_State *L, int idx);
  352.  
  353.  
  354. /*
  355. ** {==============================================================
  356. ** some useful macros
  357. ** ===============================================================
  358. */
  359.  
  360. #define lua_getextraspace(L)    ((void *)((char *)(L) - LUA_EXTRASPACE))
  361.  
  362. #define lua_tonumber(L,i)       lua_tonumberx(L,(i),NULL)
  363. #define lua_tointeger(L,i)      lua_tointegerx(L,(i),NULL)
  364.  
  365. #define lua_pop(L,n)            lua_settop(L, -(n)-1)
  366.  
  367. #define lua_newtable(L)         lua_createtable(L, 0, 0)
  368.  
  369. #define lua_register(L,n,f) (lua_pushcfunction(L, (f)), lua_setglobal(L, (n)))
  370.  
  371. #define lua_pushcfunction(L,f)  lua_pushcclosure(L, (f), 0)
  372.  
  373. #define lua_isfunction(L,n)     (lua_type(L, (n)) == LUA_TFUNCTION)
  374. #define lua_istable(L,n)        (lua_type(L, (n)) == LUA_TTABLE)
  375. #define lua_islightuserdata(L,n)        (lua_type(L, (n)) == LUA_TLIGHTUSERDATA)
  376. #define lua_isnil(L,n)          (lua_type(L, (n)) == LUA_TNIL)
  377. #define lua_isboolean(L,n)      (lua_type(L, (n)) == LUA_TBOOLEAN)
  378. #define lua_isthread(L,n)       (lua_type(L, (n)) == LUA_TTHREAD)
  379. #define lua_isnone(L,n)         (lua_type(L, (n)) == LUA_TNONE)
  380. #define lua_isnoneornil(L, n)   (lua_type(L, (n)) <= 0)
  381.  
  382. #define lua_pushliteral(L, s)   lua_pushstring(L, "" s)
  383.  
  384. #define lua_pushglobaltable(L)  \
  385.         ((void)lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS))
  386.  
  387. #define lua_tostring(L,i)       lua_tolstring(L, (i), NULL)
  388.  
  389.  
  390. #define lua_insert(L,idx)       lua_rotate(L, (idx), 1)
  391.  
  392. #define lua_remove(L,idx)       (lua_rotate(L, (idx), -1), lua_pop(L, 1))
  393.  
  394. #define lua_replace(L,idx)      (lua_copy(L, -1, (idx)), lua_pop(L, 1))
  395.  
  396. /* }============================================================== */
  397.  
  398.  
  399. /*
  400. ** {==============================================================
  401. ** compatibility macros
  402. ** ===============================================================
  403. */
  404. #if defined(LUA_COMPAT_APIINTCASTS)
  405.  
  406. #define lua_pushunsigned(L,n)   lua_pushinteger(L, (lua_Integer)(n))
  407. #define lua_tounsignedx(L,i,is) ((lua_Unsigned)lua_tointegerx(L,i,is))
  408. #define lua_tounsigned(L,i)     lua_tounsignedx(L,(i),NULL)
  409.  
  410. #endif
  411.  
  412. #define lua_newuserdata(L,s)    lua_newuserdatauv(L,s,1)
  413. #define lua_getuservalue(L,idx) lua_getiuservalue(L,idx,1)
  414. #define lua_setuservalue(L,idx) lua_setiuservalue(L,idx,1)
  415.  
  416. #define LUA_NUMTAGS             LUA_NUMTYPES
  417.  
  418. /* }============================================================== */
  419.  
  420. /*
  421. ** {======================================================================
  422. ** Debug API
  423. ** =======================================================================
  424. */
  425.  
  426.  
  427. /*
  428. ** Event codes
  429. */
  430. #define LUA_HOOKCALL    0
  431. #define LUA_HOOKRET     1
  432. #define LUA_HOOKLINE    2
  433. #define LUA_HOOKCOUNT   3
  434. #define LUA_HOOKTAILCALL 4
  435.  
  436.  
  437. /*
  438. ** Event masks
  439. */
  440. #define LUA_MASKCALL    (1 << LUA_HOOKCALL)
  441. #define LUA_MASKRET     (1 << LUA_HOOKRET)
  442. #define LUA_MASKLINE    (1 << LUA_HOOKLINE)
  443. #define LUA_MASKCOUNT   (1 << LUA_HOOKCOUNT)
  444.  
  445. typedef struct lua_Debug lua_Debug;  /* activation record */
  446.  
  447.  
  448. /* Functions to be called by the debugger in specific events */
  449. typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
  450.  
  451.  
  452. LUA_API int (lua_getstack) (lua_State *L, int level, lua_Debug *ar);
  453. LUA_API int (lua_getinfo) (lua_State *L, const char *what, lua_Debug *ar);
  454. LUA_API const char *(lua_getlocal) (lua_State *L, const lua_Debug *ar, int n);
  455. LUA_API const char *(lua_setlocal) (lua_State *L, const lua_Debug *ar, int n);
  456. LUA_API const char *(lua_getupvalue) (lua_State *L, int funcindex, int n);
  457. LUA_API const char *(lua_setupvalue) (lua_State *L, int funcindex, int n);
  458.  
  459. LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n);
  460. LUA_API void  (lua_upvaluejoin) (lua_State *L, int fidx1, int n1,
  461.                                                int fidx2, int n2);
  462.  
  463. LUA_API void (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count);
  464. LUA_API lua_Hook (lua_gethook) (lua_State *L);
  465. LUA_API int (lua_gethookmask) (lua_State *L);
  466. LUA_API int (lua_gethookcount) (lua_State *L);
  467.  
  468. LUA_API int (lua_setcstacklimit) (lua_State *L, unsigned int limit);
  469.  
  470. struct lua_Debug {
  471.   int event;
  472.   const char *name;     /* (n) */
  473.   const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */
  474.   const char *what;     /* (S) 'Lua', 'C', 'main', 'tail' */
  475.   const char *source;   /* (S) */
  476.   size_t srclen;        /* (S) */
  477.   int currentline;      /* (l) */
  478.   int linedefined;      /* (S) */
  479.   int lastlinedefined;  /* (S) */
  480.   unsigned char nups;   /* (u) number of upvalues */
  481.   unsigned char nparams;/* (u) number of parameters */
  482.   char isvararg;        /* (u) */
  483.   char istailcall;      /* (t) */
  484.   unsigned short ftransfer;   /* (r) index of first value transferred */
  485.   unsigned short ntransfer;   /* (r) number of transferred values */
  486.   char short_src[LUA_IDSIZE]; /* (S) */
  487.   /* private part */
  488.   struct CallInfo *i_ci;  /* active function */
  489. };
  490.  
  491. /* }====================================================================== */
  492.  
  493.  
  494. /******************************************************************************
  495. * Copyright (C) 1994-2022 Lua.org, PUC-Rio.
  496. *
  497. * Permission is hereby granted, free of charge, to any person obtaining
  498. * a copy of this software and associated documentation files (the
  499. * "Software"), to deal in the Software without restriction, including
  500. * without limitation the rights to use, copy, modify, merge, publish,
  501. * distribute, sublicense, and/or sell copies of the Software, and to
  502. * permit persons to whom the Software is furnished to do so, subject to
  503. * the following conditions:
  504. *
  505. * The above copyright notice and this permission notice shall be
  506. * included in all copies or substantial portions of the Software.
  507. *
  508. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  509. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  510. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  511. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  512. * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  513. * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  514. * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  515. ******************************************************************************/
  516.  
  517.  
  518. #endif
  519.