lauxlib.h 9.8 KB

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  1. /*
  2. ** $Id: lauxlib.h,v 1.131.1.1 2017/04/19 17:20:42 roberto Exp $
  3. ** Auxiliary functions for building Lua libraries
  4. ** See Copyright Notice in lua.h
  5. */
  6. #ifndef lauxlib_h
  7. #define lauxlib_h
  8. #include <stddef.h>
  9. #include <stdio.h>
  10. #include "lua.h"
  11. #ifdef LUA_LIB
  12. #include "lnodemcu.h"
  13. #endif
  14. /* extra error code for 'luaL_loadfilex' */
  15. #define LUA_ERRFILE (LUA_ERRERR+1)
  16. /* key, in the registry, for table of loaded modules */
  17. #define LUA_LOADED_TABLE "_LOADED"
  18. /* key, in the registry, for table of preloaded loaders */
  19. #define LUA_PRELOAD_TABLE "_PRELOAD"
  20. typedef struct luaL_Reg {
  21. const char *name;
  22. lua_CFunction func;
  23. } luaL_Reg;
  24. #define LUAL_NUMSIZES (sizeof(lua_Integer)*16 + sizeof(lua_Number))
  25. LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver, size_t sz);
  26. #define luaL_checkversion(L) \
  27. luaL_checkversion_(L, LUA_VERSION_NUM, LUAL_NUMSIZES)
  28. LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
  29. LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
  30. LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);
  31. LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg);
  32. LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg,
  33. size_t *l);
  34. LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg,
  35. const char *def, size_t *l);
  36. LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int arg);
  37. LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int arg, lua_Number def);
  38. LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int arg);
  39. LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int arg,
  40. lua_Integer def);
  41. LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
  42. LUALIB_API void (luaL_checktype) (lua_State *L, int arg, int t);
  43. LUALIB_API void (luaL_checkany) (lua_State *L, int arg);
  44. LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname);
  45. LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname);
  46. LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname);
  47. LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
  48. LUALIB_API int (luaL_rometatable) (lua_State *L, const char* tname, const ROTable *p);
  49. LUALIB_API void (luaL_where) (lua_State *L, int lvl);
  50. LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
  51. LUALIB_API int (luaL_checkoption) (lua_State *L, int arg, const char *def,
  52. const char *const lst[]);
  53. LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);
  54. LUALIB_API int (luaL_execresult) (lua_State *L, int stat);
  55. /* predefined references */
  56. #define LUA_NOREF (-2)
  57. #define LUA_REFNIL (-1)
  58. LUALIB_API int (luaL_ref) (lua_State *L, int t);
  59. LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
  60. #define luaL_unref2(l,t,r) do {luaL_unref(L, (t), (r)); r = LUA_NOREF;} while (0)
  61. LUALIB_API void (luaL_reref) (lua_State *L, int t, int *ref);
  62. LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename,
  63. const char *mode);
  64. #define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL)
  65. LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz,
  66. const char *name, const char *mode);
  67. LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
  68. LUALIB_API lua_State *(luaL_newstate) (void);
  69. LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx);
  70. LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
  71. const char *r);
  72. LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup);
  73. LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname);
  74. LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1,
  75. const char *msg, int level);
  76. LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
  77. lua_CFunction openf, int glb);
  78. /*
  79. ** ===============================================================
  80. ** some useful macros
  81. ** ===============================================================
  82. */
  83. #define luaL_newlibtable(L,l) \
  84. lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
  85. #define luaL_newlib(L,l) \
  86. (luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
  87. #define luaL_argcheck(L, cond,arg,extramsg) \
  88. ((void)((cond) || luaL_argerror(L, (arg), (extramsg))))
  89. #define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
  90. #define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))
  91. #define luaL_typename(L,i) lua_typename(L, lua_type(L,(i)))
  92. #define luaL_dofile(L, fn) \
  93. (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
  94. #define luaL_dostring(L, s) \
  95. (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
  96. #define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n)))
  97. #define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
  98. #define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL)
  99. /*
  100. ** {======================================================
  101. ** Generic Buffer manipulation
  102. ** =======================================================
  103. */
  104. typedef struct luaL_Buffer {
  105. char *b; /* buffer address */
  106. size_t size; /* buffer size */
  107. size_t n; /* number of characters in buffer */
  108. lua_State *L;
  109. char initb[LUAL_BUFFERSIZE]; /* initial buffer */
  110. } luaL_Buffer;
  111. #define luaL_addchar(B,c) \
  112. ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \
  113. ((B)->b[(B)->n++] = (c)))
  114. #define luaL_addsize(B,s) ((B)->n += (s))
  115. LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
  116. LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);
  117. LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
  118. LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
  119. LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
  120. LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
  121. LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz);
  122. LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz);
  123. #define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE)
  124. /* }====================================================== */
  125. /*
  126. ** {======================================================
  127. ** File handles for IO library
  128. ** =======================================================
  129. */
  130. /*
  131. ** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and
  132. ** initial structure 'luaL_Stream' (it may contain other fields
  133. ** after that initial structure).
  134. */
  135. #define LUA_FILEHANDLE "FILE*"
  136. typedef struct luaL_Stream {
  137. FILE *f; /* stream (NULL for incompletely created streams) */
  138. lua_CFunction closef; /* to close stream (NULL for closed streams) */
  139. } luaL_Stream;
  140. /* }====================================================== */
  141. LUALIB_API int (luaL_rometatable) (lua_State *L, const char* tname, const ROTable *t);
  142. /* }====================================================== */
  143. /* compatibility with old module system */
  144. #if defined(LUA_COMPAT_MODULE)
  145. LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname,
  146. int sizehint);
  147. LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,
  148. const luaL_Reg *l, int nup);
  149. #define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0))
  150. #endif
  151. /*
  152. ** {==================================================================
  153. ** "Abstraction Layer" for basic report of messages and errors
  154. ** ===================================================================
  155. */
  156. /* print a string */
  157. #if !defined(lua_writestring)
  158. #ifdef LUA_USE_ESP8266
  159. #define lua_writestring(s,l) output_redirect((s),(l))
  160. #else
  161. #define lua_writestring(s,l) fwrite((s), sizeof(char), (l), stdout)
  162. #endif
  163. #endif
  164. /* print a newline and flush the output */
  165. #if !defined(lua_writeline)
  166. #ifdef LUA_USE_ESP8266
  167. #define lua_writeline() lua_writestring("\n", 1)
  168. #else
  169. #define lua_writeline() (lua_writestring("\n", 1), fflush(stdout))
  170. #endif
  171. #endif
  172. /* print an error message. This is a primitive error output */
  173. #if !defined(lua_writestringerror)
  174. #ifdef LUA_USE_ESP8266
  175. extern void dbg_printf(const char *fmt, ...);
  176. #define lua_writestringerror(s,p) dbg_printf((s), (p))
  177. #else
  178. #define lua_writestringerror(s,p) (fprintf(stderr, (s), (p)), fflush(stderr))
  179. #endif
  180. #endif
  181. /* }================================================================== */
  182. /*
  183. ** {============================================================
  184. ** Compatibility with deprecated conversions
  185. ** =============================================================
  186. */
  187. #if defined(LUA_COMPAT_APIINTCASTS)
  188. #define luaL_checkunsigned(L,a) ((lua_Unsigned)luaL_checkinteger(L,a))
  189. #define luaL_optunsigned(L,a,d) \
  190. ((lua_Unsigned)luaL_optinteger(L,a,(lua_Integer)(d)))
  191. #define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n)))
  192. #define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d)))
  193. #define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n)))
  194. #define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d)))
  195. #endif
  196. /* }============================================================ */
  197. /*
  198. ** {==================================================================
  199. ** NodeMCU extensions
  200. ** ===================================================================
  201. */
  202. #define LUA_TASK_LOW 0
  203. #define LUA_TASK_MEDIUM 1
  204. #define LUA_TASK_HIGH 2
  205. LUALIB_API int (luaL_pushlfsmodules) (lua_State *L);
  206. LUALIB_API int (luaL_pushlfsdts) (lua_State *L);
  207. LUALIB_API void (luaL_lfsreload) (lua_State *L);
  208. LUALIB_API int (luaL_posttask) (lua_State* L, int prio);
  209. LUALIB_API int (luaL_pcallx) (lua_State *L, int narg, int nres);
  210. #define luaL_pushlfsmodule(l) lua_pushlfsfunc(L)
  211. /* }============================================================ */
  212. #endif