mirror of
https://github.com/lua/lua
synced 2024-11-22 21:01:26 +03:00
146 lines
4.8 KiB
C
146 lines
4.8 KiB
C
/*
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** $Id: lauxlib.h,v 1.70 2004/07/09 18:23:17 roberto Exp roberto $
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** Auxiliary functions for building Lua libraries
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** See Copyright Notice in lua.h
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*/
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#ifndef lauxlib_h
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#define lauxlib_h
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#include <stddef.h>
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#include <stdio.h>
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#include "lua.h"
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/* extra error code for `luaL_load' */
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#define LUA_ERRFILE (LUA_ERRERR+1)
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typedef struct luaL_reg {
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const char *name;
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lua_CFunction func;
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} luaL_reg;
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LUALIB_API void luaL_openlib (lua_State *L, const char *libname,
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const luaL_reg *l, int nup);
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LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *e);
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LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *e);
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LUALIB_API int luaL_typerror (lua_State *L, int narg, const char *tname);
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LUALIB_API int luaL_argerror (lua_State *L, int numarg, const char *extramsg);
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LUALIB_API const char *luaL_checklstring (lua_State *L, int numArg, size_t *l);
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LUALIB_API const char *luaL_optlstring (lua_State *L, int numArg,
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const char *def, size_t *l);
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LUALIB_API lua_Number luaL_checknumber (lua_State *L, int numArg);
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LUALIB_API lua_Number luaL_optnumber (lua_State *L, int nArg, lua_Number def);
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LUALIB_API lua_Integer luaL_checkinteger (lua_State *L, int numArg);
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LUALIB_API lua_Integer luaL_optinteger (lua_State *L, int nArg,
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lua_Integer def);
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LUALIB_API void luaL_checkstack (lua_State *L, int sz, const char *msg);
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LUALIB_API void luaL_checktype (lua_State *L, int narg, int t);
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LUALIB_API void luaL_checkany (lua_State *L, int narg);
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LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname);
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LUALIB_API void luaL_getmetatable (lua_State *L, const char *tname);
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LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname);
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LUALIB_API void luaL_where (lua_State *L, int lvl);
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LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...);
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LUALIB_API int luaL_findstring (const char *st, const char *const lst[]);
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LUALIB_API const char *luaL_searchpath (lua_State *L, const char *name,
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const char *path);
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LUALIB_API int luaL_ref (lua_State *L, int t);
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LUALIB_API void luaL_unref (lua_State *L, int t, int ref);
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LUALIB_API int luaL_getn (lua_State *L, int t);
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LUALIB_API void luaL_setn (lua_State *L, int t, int n);
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LUALIB_API int luaL_loadfile (lua_State *L, const char *filename);
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LUALIB_API int luaL_loadbuffer (lua_State *L, const char *buff, size_t sz,
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const char *name);
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LUALIB_API lua_State *(luaL_newstate) (void);
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LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p,
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const char *r);
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LUALIB_API const char *luaL_getfield (lua_State *L, const char *fname);
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LUALIB_API const char *luaL_setfield (lua_State *L, const char *fname);
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/*
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** ===============================================================
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** some useful macros
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** ===============================================================
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*/
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#define luaL_argcheck(L, cond,numarg,extramsg) \
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((void)((cond) || luaL_argerror(L, numarg,extramsg)))
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#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
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#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))
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#define luaL_checkint(L,n) ((int)luaL_checkinteger(L, n))
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#define luaL_optint(L,n,d) ((int)luaL_optinteger(L, n,d))
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#define luaL_checklong(L,n) ((long)luaL_checkinteger(L, n))
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#define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, n,d))
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#define luaL_typename(L,i) lua_typename(L,lua_type(L,(i)))
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/*
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** {======================================================
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** Generic Buffer manipulation
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** =======================================================
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*/
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typedef struct luaL_Buffer {
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char *p; /* current position in buffer */
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int lvl; /* number of strings in the stack (level) */
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lua_State *L;
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char buffer[LUAL_BUFFERSIZE];
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} luaL_Buffer;
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#define luaL_putchar(B,c) \
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((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
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(*(B)->p++ = (char)(c)))
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#define luaL_addsize(B,n) ((B)->p += (n))
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LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B);
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LUALIB_API char *luaL_prepbuffer (luaL_Buffer *B);
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LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l);
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LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s);
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LUALIB_API void luaL_addvalue (luaL_Buffer *B);
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LUALIB_API void luaL_pushresult (luaL_Buffer *B);
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/* }====================================================== */
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/* compatibility with ref system */
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/* pre-defined references */
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#define LUA_NOREF (-2)
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#define LUA_REFNIL (-1)
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#define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
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(lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
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#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
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#define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, ref)
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#endif
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