149 typedef luaL_Stream LStream;  typedef
152 #define tolstream(L)	((LStream *)luaL_checkudata(L, 1, LUA_FILEHANDLE))
158   LStream *p;  in io_type()
160   p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE);  in io_type()
172   LStream *p = tolstream(L);  in f_tostring()
182   LStream *p = tolstream(L);  in tofile()
195 static LStream *newprefile (lua_State *L) {  in newprefile()
196   LStream *p = (LStream *)lua_newuserdatauv(L, sizeof(LStream), 0);  in newprefile()
209   LStream *p = tolstream(L);  in aux_close()
230   LStream *p = tolstream(L);  in f_gc()
241   LStream *p = tolstream(L);  in io_fclose()
247 static LStream *newfile (lua_State *L) {  in newfile()
248   LStream *p = newprefile(L);  in newfile()
256   LStream *p = newfile(L);  in opencheck()
266   LStream *p = newfile(L);  in io_open()
278   LStream *p = tolstream(L);  in io_pclose()
287   LStream *p = newprefile(L);  in io_popen()
296   LStream *p = newfile(L);  in io_tmpfile()
303   LStream *p;  in getiofile()
305   p = (LStream *)lua_touserdata(L, -1);  in getiofile()
624   LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1));  in io_readline()
791   LStream *p = tolstream(L);  in io_noclose()
801   LStream *p = newprefile(L);  in createstdfile()