mirror of
https://github.com/lua/lua
synced 2024-11-23 13:19:57 +03:00
102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
/*
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** $Id: lauxlib.h,v 1.33 2001/02/02 19:02:40 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 l_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 luaL_reg *l, int n);
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LUALIB_API void luaL_argerror (lua_State *L, int numarg, const l_char *extramsg);
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LUALIB_API const l_char *luaL_check_lstr (lua_State *L, int numArg, size_t *len);
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LUALIB_API const l_char *luaL_opt_lstr (lua_State *L, int numArg, const l_char *def, size_t *len);
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LUALIB_API lua_Number luaL_check_number (lua_State *L, int numArg);
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LUALIB_API lua_Number luaL_opt_number (lua_State *L, int nArg, lua_Number def);
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LUALIB_API void luaL_checkstack (lua_State *L, int space, const l_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_check_userdata (lua_State *L, int narg, const l_char *name);
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LUALIB_API void luaL_verror (lua_State *L, const l_char *fmt, ...);
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LUALIB_API int luaL_findstring (const l_char *name, const l_char *const list[]);
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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_arg_check(L, cond,numarg,extramsg) if (!(cond)) \
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luaL_argerror(L, numarg,extramsg)
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#define luaL_check_string(L,n) (luaL_check_lstr(L, (n), NULL))
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#define luaL_opt_string(L,n,d) (luaL_opt_lstr(L, (n), (d), NULL))
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#define luaL_check_int(L,n) ((int)luaL_check_number(L, n))
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#define luaL_check_long(L,n) ((long)luaL_check_number(L, n))
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#define luaL_opt_int(L,n,d) ((int)luaL_opt_number(L, n,d))
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#define luaL_opt_long(L,n,d) ((long)luaL_opt_number(L, n,d))
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#define luaL_openl(L,a) luaL_openlib(L, a, (sizeof(a)/sizeof(a[0])))
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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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l_char *p; /* current position in buffer */
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int level;
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lua_State *L;
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l_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++ = (l_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 l_char *luaL_prepbuffer (luaL_Buffer *B);
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LUALIB_API void luaL_addlstring (luaL_Buffer *B, const l_char *s, size_t l);
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LUALIB_API void luaL_addstring (luaL_Buffer *B, const l_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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#endif
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