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/*
** $Id: lauxlib.h,v 1.51 2002/07/01 19:23:58 roberto Exp roberto $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
#ifndef lauxlib_h
#define lauxlib_h
#include <stddef.h>
#include <stdio.h>
#include "lua.h"
#ifndef LUALIB_API
#define LUALIB_API extern
#endif
typedef struct luaL_reg {
const char *name;
lua_CFunction func;
} luaL_reg;
LUALIB_API void luaL_openlib (lua_State *L, const luaL_reg *l, int nup);
LUALIB_API void luaL_opennamedlib (lua_State *L, const char *libname,
const luaL_reg *l, int nup);
LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event);
LUALIB_API int luaL_typerror (lua_State *L, int narg, const char *tname);
LUALIB_API int luaL_argerror (lua_State *L, int numarg, const char *extramsg);
LUALIB_API const char *luaL_check_lstr (lua_State *L, int numArg,
size_t *len);
LUALIB_API const char *luaL_opt_lstr (lua_State *L, int numArg,
const char *def, size_t *len);
LUALIB_API lua_Number luaL_check_number (lua_State *L, int numArg);
LUALIB_API lua_Number luaL_opt_number (lua_State *L, int nArg, lua_Number def);
LUALIB_API void luaL_check_stack (lua_State *L, int space, const char *msg);
LUALIB_API void luaL_check_type (lua_State *L, int narg, int t);
LUALIB_API void luaL_check_any (lua_State *L, int narg);
LUALIB_API void luaL_where (lua_State *L, int level);
LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...);
LUALIB_API int luaL_findstring (const char *name,
const char *const list[]);
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_loadfile (lua_State *L, const char *filename);
LUALIB_API int luaL_loadbuffer (lua_State *L, const char *buff, size_t size,
const char *name);
/*
** ===============================================================
** some useful macros
** ===============================================================
*/
#define luaL_arg_check(L, cond,numarg,extramsg) if (!(cond)) \
luaL_argerror(L, numarg,extramsg)
#define luaL_check_string(L,n) (luaL_check_lstr(L, (n), NULL))
#define luaL_opt_string(L,n,d) (luaL_opt_lstr(L, (n), (d), NULL))
#define luaL_check_int(L,n) ((int)luaL_check_number(L, n))
#define luaL_check_long(L,n) ((long)luaL_check_number(L, n))
#define luaL_opt_int(L,n,d) ((int)luaL_opt_number(L, n,d))
#define luaL_opt_long(L,n,d) ((long)luaL_opt_number(L, n,d))
/*
** {======================================================
** Generic Buffer manipulation
** =======================================================
*/
#ifndef LUAL_BUFFERSIZE
#define LUAL_BUFFERSIZE BUFSIZ
#endif
typedef struct luaL_Buffer {
char *p; /* current position in buffer */
int level;
lua_State *L;
char buffer[LUAL_BUFFERSIZE];
} luaL_Buffer;
#define luaL_putchar(B,c) \
((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
(*(B)->p++ = (char)(c)))
#define luaL_addsize(B,n) ((B)->p += (n))
LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B);
LUALIB_API char *luaL_prepbuffer (luaL_Buffer *B);
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);
/* }====================================================== */
/*
** Compatibility macros
*/
#define luaL_checktype luaL_check_type
#define luaL_checkany luaL_check_any
LUALIB_API int lua_dofile (lua_State *L, const char *filename);
LUALIB_API int lua_dostring (lua_State *L, const char *str);
LUALIB_API int lua_dobuffer (lua_State *L, const char *buff, size_t size,
const char *name);
#endif
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