mirror of
https://github.com/lua/lua.git
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94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/*
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** $Id: lauxlib.h,v 1.24 2000/09/11 20:29:27 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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struct luaL_reg {
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const char *name;
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lua_CFunction func;
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};
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void luaL_openlib (lua_State *L, const struct luaL_reg *l, int n);
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void luaL_argerror (lua_State *L, int numarg, const char *extramsg);
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const char *luaL_check_lstr (lua_State *L, int numArg, size_t *len);
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const char *luaL_opt_lstr (lua_State *L, int numArg, const char *def,
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size_t *len);
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double luaL_check_number (lua_State *L, int numArg);
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double luaL_opt_number (lua_State *L, int numArg, double def);
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void luaL_checkstack (lua_State *L, int space, const char *msg);
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void luaL_checktype (lua_State *L, int narg, const char *tname);
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void luaL_verror (lua_State *L, const char *fmt, ...);
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int luaL_findstring (const char *name, const 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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#define LUAL_BUFFERSIZE BUFSIZ
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typedef struct luaL_Buffer {
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char *p; /* current position in buffer */
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int 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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void luaL_buffinit (lua_State *L, luaL_Buffer *B);
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char *luaL_prepbuffer (luaL_Buffer *B);
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void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l);
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void luaL_addstring (luaL_Buffer *B, const char *s);
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void luaL_addvalue (luaL_Buffer *B);
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void luaL_pushresult (luaL_Buffer *B);
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/* }====================================================== */
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#endif
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