mirror of
https://github.com/lua/lua.git
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143 lines
4.3 KiB
C
143 lines
4.3 KiB
C
/*
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** $Id: lauxlib.h,v 1.57 2003/01/27 13:46:16 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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#ifndef LUALIB_API
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#define LUALIB_API extern
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#endif
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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 void *luaL_checkudata (lua_State *L, int ud, const char *tname);
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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 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 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 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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/*
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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) if (!(cond)) \
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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_checknumber(L, n))
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#define luaL_checklong(L,n) ((long)luaL_checknumber(L, n))
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#define luaL_optint(L,n,d) ((int)luaL_optnumber(L, n,d))
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#define luaL_optlong(L,n,d) ((long)luaL_optnumber(L, n,d))
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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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#ifndef LUAL_BUFFERSIZE
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#define LUAL_BUFFERSIZE BUFSIZ
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#endif
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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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/*
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** Compatibility macros
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*/
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LUALIB_API int lua_dofile (lua_State *L, const char *filename);
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LUALIB_API int lua_dostring (lua_State *L, const char *str);
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LUALIB_API int lua_dobuffer (lua_State *L, const char *buff, size_t sz,
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const char *n);
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#define luaL_check_lstr luaL_checklstring
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#define luaL_opt_lstr luaL_optlstring
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#define luaL_check_number luaL_checknumber
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#define luaL_opt_number luaL_optnumber
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#define luaL_arg_check luaL_argcheck
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#define luaL_check_string luaL_checkstring
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#define luaL_opt_string luaL_optstring
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#define luaL_check_int luaL_checkint
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#define luaL_check_long luaL_checklong
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#define luaL_opt_int luaL_optint
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#define luaL_opt_long luaL_optlong
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#endif
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