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removed 'newproxy'

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This commit is contained in:
Roberto Ierusalimschy 2010-12-17 13:14:58 -02:00
parent 1a92c2b354
commit d51743b0c7
1 changed files with 1 additions and 37 deletions
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38
lbaselib.c
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@ -1,5 +1,5 @@
/*
** $Id: lbaselib.c,v 1.254 2010/12/08 12:58:04 roberto Exp roberto $
** $Id: lbaselib.c,v 1.255 2010/12/13 16:38:00 roberto Exp roberto $
** Basic library
** See Copyright Notice in lua.h
*/
@ -425,34 +425,6 @@ static int luaB_tostring (lua_State *L) {
}
static int luaB_newproxy (lua_State *L) {
lua_settop(L, 1);
lua_newuserdata(L, 0); /* create proxy */
if (lua_toboolean(L, 1) == 0)
return 1; /* no metatable */
else if (lua_isboolean(L, 1)) {
lua_createtable(L, 0, 1); /* create a new metatable `m' ... */
lua_pushboolean(L, 1);
lua_setfield(L, -2, "__gc"); /* ... m.__gc = true (HACK!!)... */
lua_pushvalue(L, -1); /* ... and mark `m' as a valid metatable */
lua_pushboolean(L, 1);
lua_rawset(L, lua_upvalueindex(1)); /* weaktable[m] = true */
}
else {
int validproxy = 0; /* to check if weaktable[metatable(u)] == true */
if (lua_getmetatable(L, 1)) {
lua_rawget(L, lua_upvalueindex(1));
validproxy = lua_toboolean(L, -1);
lua_pop(L, 1); /* remove value */
}
luaL_argcheck(L, validproxy, 1, "boolean or proxy expected");
lua_getmetatable(L, 1); /* metatable is valid; get it */
}
lua_setmetatable(L, 2);
return 1;
}
static const luaL_Reg base_funcs[] = {
{"assert", luaB_assert},
{"collectgarbage", luaB_collectgarbage},
@ -491,14 +463,6 @@ LUAMOD_API int luaopen_base (lua_State *L) {
luaL_setfuncs(L, base_funcs, 0);
lua_pushliteral(L, LUA_VERSION);
lua_setfield(L, -2, "_VERSION"); /* set global _VERSION */
/* `newproxy' needs a weaktable as upvalue */
lua_createtable(L, 0, 1); /* new table `w' */
lua_pushvalue(L, -1); /* `w' will be its own metatable */
lua_setmetatable(L, -2);
lua_pushliteral(L, "kv");
lua_setfield(L, -2, "__mode"); /* metatable(w).__mode = "kv" */
lua_pushcclosure(L, luaB_newproxy, 1);
lua_setfield(L, -2, "newproxy"); /* set global `newproxy' */
return 1;
}