lauxlib.h
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上传日期:2022-07-26
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文件大小:6k
- /*
- ** $Id: lauxlib.h,v 1.1 2007-05-24 23:45:56 dirkpitt2050 Exp $
- ** 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"
- #if defined(LUA_COMPAT_GETN)
- LUALIB_API int (luaL_getn) (lua_State *L, int t);
- LUALIB_API void (luaL_setn) (lua_State *L, int t, int n);
- #else
- #define luaL_getn(L,i) ((int)lua_objlen(L, i))
- #define luaL_setn(L,i,j) ((void)0) /* no op! */
- #endif
- #if defined(LUA_COMPAT_OPENLIB)
- #define luaI_openlib luaL_openlib
- #endif
- /* extra error code for `luaL_load' */
- #define LUA_ERRFILE (LUA_ERRERR+1)
- typedef struct luaL_Reg {
- const char *name;
- lua_CFunction func;
- } luaL_Reg;
- LUALIB_API void (luaI_openlib) (lua_State *L, const char *libname,
- const luaL_Reg *l, int nup);
- LUALIB_API void (luaL_register) (lua_State *L, const char *libname,
- const luaL_Reg *l);
- LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
- LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
- 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_checklstring) (lua_State *L, int numArg,
- size_t *l);
- LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,
- const char *def, size_t *l);
- LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg);
- LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def);
- LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
- LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
- lua_Integer def);
- LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
- LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
- LUALIB_API void (luaL_checkany) (lua_State *L, int narg);
- LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname);
- LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
- LUALIB_API void (luaL_where) (lua_State *L, int lvl);
- LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
- LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def,
- const char *const lst[]);
- 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 sz,
- const char *name);
- LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
- LUALIB_API lua_State *(luaL_newstate) (void);
- LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
- const char *r);
- LUALIB_API const char *(luaL_findtable) (lua_State *L, int idx,
- const char *fname, int szhint);
- /*
- ** ===============================================================
- ** some useful macros
- ** ===============================================================
- */
- #define luaL_argcheck(L, cond,numarg,extramsg)
- ((void)((cond) || luaL_argerror(L, (numarg), (extramsg))))
- #define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
- #define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))
- #define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n)))
- #define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d)))
- #define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n)))
- #define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d)))
- #define luaL_typename(L,i) lua_typename(L, lua_type(L,(i)))
- #define luaL_dofile(L, fn)
- (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
- #define luaL_dostring(L, s)
- (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
- #define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n)))
- #define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
- /*
- ** {======================================================
- ** Generic Buffer manipulation
- ** =======================================================
- */
- typedef struct luaL_Buffer {
- char *p; /* current position in buffer */
- int lvl; /* number of strings in the stack (level) */
- lua_State *L;
- char buffer[LUAL_BUFFERSIZE];
- } luaL_Buffer;
- #define luaL_addchar(B,c)
- ((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)),
- (*(B)->p++ = (char)(c)))
- /* compatibility only */
- #define luaL_putchar(B,c) luaL_addchar(B,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 with ref system */
- /* pre-defined references */
- #define LUA_NOREF (-2)
- #define LUA_REFNIL (-1)
- #define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) :
- (lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
- #define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
- #define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, (ref))
- #define luaL_reg luaL_Reg
- #endif