| /* |
| ** $Id: lauxlib.h,v 1.130 2016/12/04 20:17:24 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" |
| |
| |
| |
| /* extra error code for 'luaL_loadfilex' */ |
| #define LUA_ERRFILE (LUA_ERRERR+1) |
| |
| |
| /* key, in the registry, for table of loaded modules */ |
| #define LUA_LOADED_TABLE "_LOADED" |
| |
| |
| /* key, in the registry, for table of preloaded loaders */ |
| #define LUA_PRELOAD_TABLE "_PRELOAD" |
| |
| |
| typedef struct luaL_Reg { |
| const char *name; |
| lua_CFunction func; |
| } luaL_Reg; |
| |
| |
| #define LUAL_NUMSIZES (sizeof(lua_Integer)*16 + sizeof(lua_Number)) |
| |
| LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver, size_t sz); |
| #define luaL_checkversion(L) \ |
| luaL_checkversion_(L, LUA_VERSION_NUM, LUAL_NUMSIZES) |
| |
| 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 const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len); |
| LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg); |
| LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg, |
| size_t *l); |
| LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg, |
| const char *def, size_t *l); |
| LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int arg); |
| LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int arg, lua_Number def); |
| |
| LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int arg); |
| LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int arg, |
| 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 arg, int t); |
| LUALIB_API void (luaL_checkany) (lua_State *L, int arg); |
| |
| LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname); |
| LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname); |
| LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, 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 arg, const char *def, |
| const char *const lst[]); |
| |
| LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname); |
| LUALIB_API int (luaL_execresult) (lua_State *L, int stat); |
| |
| /* predefined references */ |
| #define LUA_NOREF (-2) |
| #define LUA_REFNIL (-1) |
| |
| 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_loadfilex) (lua_State *L, const char *filename, |
| const char *mode); |
| |
| #define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL) |
| |
| LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz, |
| const char *name, const char *mode); |
| LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s); |
| |
| LUALIB_API lua_State *(luaL_newstate) (void); |
| |
| LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx); |
| |
| LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p, |
| const char *r); |
| |
| LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); |
| |
| LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname); |
| |
| LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1, |
| const char *msg, int level); |
| |
| LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname, |
| lua_CFunction openf, int glb); |
| |
| /* |
| ** =============================================================== |
| ** some useful macros |
| ** =============================================================== |
| */ |
| |
| |
| #define luaL_newlibtable(L,l) \ |
| lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1) |
| |
| #define luaL_newlib(L,l) \ |
| (luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0)) |
| |
| #define luaL_argcheck(L, cond,arg,extramsg) \ |
| ((void)((cond) || luaL_argerror(L, (arg), (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_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))) |
| |
| #define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL) |
| |
| |
| /* |
| ** {====================================================== |
| ** Generic Buffer manipulation |
| ** ======================================================= |
| */ |
| |
| typedef struct luaL_Buffer { |
| char *b; /* buffer address */ |
| size_t size; /* buffer size */ |
| size_t n; /* number of characters in buffer */ |
| lua_State *L; |
| char initb[LUAL_BUFFERSIZE]; /* initial buffer */ |
| } luaL_Buffer; |
| |
| |
| #define luaL_addchar(B,c) \ |
| ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \ |
| ((B)->b[(B)->n++] = (c))) |
| |
| #define luaL_addsize(B,s) ((B)->n += (s)) |
| |
| LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B); |
| LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz); |
| 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); |
| LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz); |
| LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz); |
| |
| #define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE) |
| |
| /* }====================================================== */ |
| |
| |
| |
| /* |
| ** {====================================================== |
| ** File handles for IO library |
| ** ======================================================= |
| */ |
| |
| /* |
| ** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and |
| ** initial structure 'luaL_Stream' (it may contain other fields |
| ** after that initial structure). |
| */ |
| |
| #define LUA_FILEHANDLE "FILE*" |
| |
| |
| typedef struct luaL_Stream { |
| FILE *f; /* stream (NULL for incompletely created streams) */ |
| lua_CFunction closef; /* to close stream (NULL for closed streams) */ |
| } luaL_Stream; |
| |
| /* }====================================================== */ |
| |
| |
| |
| /* compatibility with old module system */ |
| #if defined(LUA_COMPAT_MODULE) |
| |
| LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname, |
| int sizehint); |
| LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname, |
| const luaL_Reg *l, int nup); |
| |
| #define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0)) |
| |
| #endif |
| |
| |
| /* |
| ** {================================================================== |
| ** "Abstraction Layer" for basic report of messages and errors |
| ** =================================================================== |
| */ |
| |
| /* print a string */ |
| #if !defined(lua_writestring) |
| #define lua_writestring(s,l) fwrite((s), sizeof(char), (l), stdout) |
| #endif |
| |
| /* print a newline and flush the output */ |
| #if !defined(lua_writeline) |
| #define lua_writeline() (lua_writestring("\n", 1), fflush(stdout)) |
| #endif |
| |
| /* print an error message */ |
| #if !defined(lua_writestringerror) |
| #define lua_writestringerror(s,p) \ |
| (fprintf(stderr, (s), (p)), fflush(stderr)) |
| #endif |
| |
| /* }================================================================== */ |
| |
| |
| /* |
| ** {============================================================ |
| ** Compatibility with deprecated conversions |
| ** ============================================================= |
| */ |
| #if defined(LUA_COMPAT_APIINTCASTS) |
| |
| #define luaL_checkunsigned(L,a) ((lua_Unsigned)luaL_checkinteger(L,a)) |
| #define luaL_optunsigned(L,a,d) \ |
| ((lua_Unsigned)luaL_optinteger(L,a,(lua_Integer)(d))) |
| |
| #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))) |
| |
| #endif |
| /* }============================================================ */ |
| |
| |
| |
| #endif |
| |
| |
