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new semantics for pushuserdata (no more different userdatas with same value)

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Roberto Ierusalimschy
2001-02-09 17:53:16 -02:00
parent dc17a9cc24
commit 6875fdc8be
5 changed files with 34 additions and 25 deletions
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16
lstring.c
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@@ -1,5 +1,5 @@
/*
** $Id: lstring.c,v 1.54 2001/02/01 13:56:49 roberto Exp roberto $
** $Id: lstring.c,v 1.55 2001/02/01 17:40:48 roberto Exp roberto $
** String table (keeps all strings handled by Lua)
** See Copyright Notice in lua.h
*/
@@ -102,17 +102,17 @@ TString *luaS_newudata (lua_State *L, size_t s, void *udata) {
}
TString *luaS_createudata (lua_State *L, void *udata, int tag) {
int luaS_createudata (lua_State *L, void *udata, TObject *o) {
int h1 = lmod(IntPoint(udata), G(L)->udt.size);
TString *ts;
for (ts = G(L)->udt.hash[h1]; ts; ts = ts->nexthash) {
if (udata == ts->u.d.value && (tag == ts->u.d.tag || tag == LUA_ANYTAG))
return ts;
if (udata == ts->u.d.value) {
setuvalue(o, ts);
return 0;
}
}
/* not found */
ts = luaS_newudata(L, 0, udata);
if (tag != LUA_ANYTAG)
ts->u.d.tag = tag;
return ts;
setuvalue(o, luaS_newudata(L, 0, udata));
return 1;
}