/*** $Id: lauxlib.h,v 1.120 2011/11/29 15:55:08 roberto Exp $** Auxiliary functions for building Lua libraries** See Copyright Notice in lua.h*/ #pragma lib "/$M/lib/ape/liblua.a" #ifndef lauxlib_h#define lauxlib_h  #include <stddef.h>#include <stdio.h> #include "lua.h"   /* extra error code for `luaL_load' */#define LUA_ERRFILE     (LUA_ERRERR+1)  typedef struct luaL_Reg {  const char *name;  lua_CFunction func;} luaL_Reg;  LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver);#define luaL_checkversion(L)	luaL_checkversion_(L, LUA_VERSION_NUM) LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg);LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg,                                                          size_t *l);LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,                                          const char *def, size_t *l);LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg);LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def); LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,                                          lua_Integer def);LUALIB_API lua_Unsigned (luaL_checkunsigned) (lua_State *L, int numArg);LUALIB_API lua_Unsigned (luaL_optunsigned) (lua_State *L, int numArg,                                            lua_Unsigned def); LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);LUALIB_API void (luaL_checkany) (lua_State *L, int narg); LUALIB_API int   (luaL_newmetatable) (lua_State *L, const char *tname);LUALIB_API void  (luaL_setmetatable) (lua_State *L, const char *tname);LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname);LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname); LUALIB_API void (luaL_where) (lua_State *L, int lvl);LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...); LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def,                                   const char *const lst[]); LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);LUALIB_API int (luaL_execresult) (lua_State *L, int stat); /* pre-defined references */#define LUA_NOREF       (-2)#define LUA_REFNIL      (-1) LUALIB_API int (luaL_ref) (lua_State *L, int t);LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref); LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename,                                               const char *mode); #define luaL_loadfile(L,f)	luaL_loadfilex(L,f,NULL) LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz,                                   const char *name, const char *mode);LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s); LUALIB_API lua_State *(luaL_newstate) (void); LUALIB_API int (luaL_len) (lua_State *L, int idx); LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,                                                  const char *r); LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname); LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1,                                  const char *msg, int level); LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,                                 lua_CFunction openf, int glb); /*** ===============================================================** some useful macros** ===============================================================*/  #define luaL_newlibtable(L,l)	\  lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1) #define luaL_newlib(L,l)	(luaL_newlibtable(L,l), luaL_setfuncs(L,l,0)) #define luaL_argcheck(L, cond,numarg,extramsg)	\		((void)((cond) || luaL_argerror(L, (numarg), (extramsg))))#define luaL_checkstring(L,n)	(luaL_checklstring(L, (n), NULL))#define luaL_optstring(L,n,d)	(luaL_optlstring(L, (n), (d), NULL))#define luaL_checkint(L,n)	((int)luaL_checkinteger(L, (n)))#define luaL_optint(L,n,d)	((int)luaL_optinteger(L, (n), (d)))#define luaL_checklong(L,n)	((long)luaL_checkinteger(L, (n)))#define luaL_optlong(L,n,d)	((long)luaL_optinteger(L, (n), (d))) #define luaL_typename(L,i)	lua_typename(L, lua_type(L,(i))) #define luaL_dofile(L, fn) \	(luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0)) #define luaL_dostring(L, s) \	(luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0)) #define luaL_getmetatable(L,n)	(lua_getfield(L, LUA_REGISTRYINDEX, (n))) #define luaL_opt(L,f,n,d)	(lua_isnoneornil(L,(n)) ? (d) : f(L,(n))) #define luaL_loadbuffer(L,s,sz,n)	luaL_loadbufferx(L,s,sz,n,NULL)  /*** {======================================================** Generic Buffer manipulation** =======================================================*/ typedef struct luaL_Buffer {  char *b;  /* buffer address */  size_t size;  /* buffer size */  size_t n;  /* number of characters in buffer */  lua_State *L;  char initb[LUAL_BUFFERSIZE];  /* initial buffer */} luaL_Buffer;  #define luaL_addchar(B,c) \  ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \   ((B)->b[(B)->n++] = (c))) #define luaL_addsize(B,s)	((B)->n += (s)) LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz);LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz); #define luaL_prepbuffer(B)	luaL_prepbuffsize(B, LUAL_BUFFERSIZE) /* }====================================================== */   /*** {======================================================** File handles for IO library** =======================================================*/ /*** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and** initial structure 'luaL_Stream' (it may contain other fields** after that initial structure).*/ #define LUA_FILEHANDLE          "FILE*"  typedef struct luaL_Stream {  FILE *f;  /* stream (NULL for incompletely created streams) */  lua_CFunction closef;  /* to close stream (NULL for closed streams) */} luaL_Stream; /* }====================================================== */   /* compatibility with old module system */#if defined(LUA_COMPAT_MODULE) LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname,                                   int sizehint);LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,                                const luaL_Reg *l, int nup); #define luaL_register(L,n,l)	(luaL_openlib(L,(n),(l),0)) #endif  #endif