rlm@1: /*
rlm@1: ** $Id: lauxlib.h,v 1.88.1.1 2007/12/27 13:02:25 roberto Exp $
rlm@1: ** Auxiliary functions for building Lua libraries
rlm@1: ** See Copyright Notice in lua.h
rlm@1: */
rlm@1: 
rlm@1: 
rlm@1: #ifndef lauxlib_h
rlm@1: #define lauxlib_h
rlm@1: 
rlm@1: 
rlm@1: #include <stddef.h>
rlm@1: #include <stdio.h>
rlm@1: 
rlm@1: #include "lua.h"
rlm@1: 
rlm@1: 
rlm@1: #if defined(LUA_COMPAT_GETN)
rlm@1: LUALIB_API int (luaL_getn) (lua_State *L, int t);
rlm@1: LUALIB_API void (luaL_setn) (lua_State *L, int t, int n);
rlm@1: #else
rlm@1: #define luaL_getn(L,i)          ((int)lua_objlen(L, i))
rlm@1: #define luaL_setn(L,i,j)        ((void)0)  /* no op! */
rlm@1: #endif
rlm@1: 
rlm@1: #if defined(LUA_COMPAT_OPENLIB)
rlm@1: #define luaI_openlib	luaL_openlib
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /* extra error code for `luaL_load' */
rlm@1: #define LUA_ERRFILE     (LUA_ERRERR+1)
rlm@1: 
rlm@1: 
rlm@1: typedef struct luaL_Reg {
rlm@1:   const char *name;
rlm@1:   lua_CFunction func;
rlm@1: } luaL_Reg;
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: LUALIB_API void (luaI_openlib) (lua_State *L, const char *libname,
rlm@1:                                 const luaL_Reg *l, int nup);
rlm@1: LUALIB_API void (luaL_register) (lua_State *L, const char *libname,
rlm@1:                                 const luaL_Reg *l);
rlm@1: LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
rlm@1: LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
rlm@1: LUALIB_API int (luaL_typerror) (lua_State *L, int narg, const char *tname);
rlm@1: LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg);
rlm@1: LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg,
rlm@1:                                                           size_t *l);
rlm@1: LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,
rlm@1:                                           const char *def, size_t *l);
rlm@1: LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg);
rlm@1: LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def);
rlm@1: 
rlm@1: LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
rlm@1: LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
rlm@1:                                           lua_Integer def);
rlm@1: 
rlm@1: LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
rlm@1: LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
rlm@1: LUALIB_API void (luaL_checkany) (lua_State *L, int narg);
rlm@1: 
rlm@1: LUALIB_API int   (luaL_newmetatable) (lua_State *L, const char *tname);
rlm@1: LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
rlm@1: 
rlm@1: LUALIB_API void (luaL_where) (lua_State *L, int lvl);
rlm@1: LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
rlm@1: 
rlm@1: LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def,
rlm@1:                                    const char *const lst[]);
rlm@1: 
rlm@1: LUALIB_API int (luaL_ref) (lua_State *L, int t);
rlm@1: LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
rlm@1: 
rlm@1: LUALIB_API int (luaL_loadfile) (lua_State *L, const char *filename);
rlm@1: LUALIB_API int (luaL_loadbuffer) (lua_State *L, const char *buff, size_t sz,
rlm@1:                                   const char *name);
rlm@1: LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
rlm@1: 
rlm@1: LUALIB_API lua_State *(luaL_newstate) (void);
rlm@1: 
rlm@1: 
rlm@1: LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
rlm@1:                                                   const char *r);
rlm@1: 
rlm@1: LUALIB_API const char *(luaL_findtable) (lua_State *L, int idx,
rlm@1:                                          const char *fname, int szhint);
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: ** ===============================================================
rlm@1: ** some useful macros
rlm@1: ** ===============================================================
rlm@1: */
rlm@1: 
rlm@1: #define luaL_argcheck(L, cond,numarg,extramsg)	\
rlm@1: 		((void)((cond) || luaL_argerror(L, (numarg), (extramsg))))
rlm@1: #define luaL_checkstring(L,n)	(luaL_checklstring(L, (n), NULL))
rlm@1: #define luaL_optstring(L,n,d)	(luaL_optlstring(L, (n), (d), NULL))
rlm@1: #define luaL_checkint(L,n)	((int)luaL_checkinteger(L, (n)))
rlm@1: #define luaL_optint(L,n,d)	((int)luaL_optinteger(L, (n), (d)))
rlm@1: #define luaL_checklong(L,n)	((long)luaL_checkinteger(L, (n)))
rlm@1: #define luaL_optlong(L,n,d)	((long)luaL_optinteger(L, (n), (d)))
rlm@1: 
rlm@1: #define luaL_typename(L,i)	lua_typename(L, lua_type(L,(i)))
rlm@1: 
rlm@1: #define luaL_dofile(L, fn) \
rlm@1: 	(luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
rlm@1: 
rlm@1: #define luaL_dostring(L, s) \
rlm@1: 	(luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
rlm@1: 
rlm@1: #define luaL_getmetatable(L,n)	(lua_getfield(L, LUA_REGISTRYINDEX, (n)))
rlm@1: 
rlm@1: #define luaL_opt(L,f,n,d)	(lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
rlm@1: 
rlm@1: /*
rlm@1: ** {======================================================
rlm@1: ** Generic Buffer manipulation
rlm@1: ** =======================================================
rlm@1: */
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: typedef struct luaL_Buffer {
rlm@1:   char *p;			/* current position in buffer */
rlm@1:   int lvl;  /* number of strings in the stack (level) */
rlm@1:   lua_State *L;
rlm@1:   char buffer[LUAL_BUFFERSIZE];
rlm@1: } luaL_Buffer;
rlm@1: 
rlm@1: #define luaL_addchar(B,c) \
rlm@1:   ((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
rlm@1:    (*(B)->p++ = (char)(c)))
rlm@1: 
rlm@1: /* compatibility only */
rlm@1: #define luaL_putchar(B,c)	luaL_addchar(B,c)
rlm@1: 
rlm@1: #define luaL_addsize(B,n)	((B)->p += (n))
rlm@1: 
rlm@1: LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
rlm@1: LUALIB_API char *(luaL_prepbuffer) (luaL_Buffer *B);
rlm@1: LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
rlm@1: LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
rlm@1: LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
rlm@1: LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
rlm@1: 
rlm@1: 
rlm@1: /* }====================================================== */
rlm@1: 
rlm@1: 
rlm@1: /* compatibility with ref system */
rlm@1: 
rlm@1: /* pre-defined references */
rlm@1: #define LUA_NOREF       (-2)
rlm@1: #define LUA_REFNIL      (-1)
rlm@1: 
rlm@1: #define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
rlm@1:       (lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
rlm@1: 
rlm@1: #define lua_unref(L,ref)        luaL_unref(L, LUA_REGISTRYINDEX, (ref))
rlm@1: 
rlm@1: #define lua_getref(L,ref)       lua_rawgeti(L, LUA_REGISTRYINDEX, (ref))
rlm@1: 
rlm@1: 
rlm@1: #define luaL_reg	luaL_Reg
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: