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userdata can have multiple user values

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This commit is contained in:
Roberto Ierusalimschy
2018-02-20 13:52:50 -03:00
parent 1afd5a152d
commit ca6fe7449a
8 changed files with 122 additions and 81 deletions
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13
lstring.c
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@@ -1,5 +1,5 @@
/*
** $Id: lstring.c,v 2.63 2018/01/28 15:13:26 roberto Exp roberto $
** $Id: lstring.c,v 2.64 2018/02/15 18:06:24 roberto Exp roberto $
** String table (keeps all strings handled by Lua)
** See Copyright Notice in lua.h
*/
@@ -265,16 +265,19 @@ TString *luaS_new (lua_State *L, const char *str) {
}
Udata *luaS_newudata (lua_State *L, size_t s) {
Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue) {
Udata *u;
int i;
GCObject *o;
if (s > MAX_SIZE - sizeof(Udata))
if (s > MAX_SIZE - udatamemoffset(nuvalue))
luaM_toobig(L);
o = luaC_newobj(L, LUA_TUSERDATA, sizeludata(s));
o = luaC_newobj(L, LUA_TUSERDATA, sizeudata(nuvalue, s));
u = gco2u(o);
u->len = s;
u->nuvalue = nuvalue;
u->metatable = NULL;
setuservalue(L, u, luaO_nilobject);
for (i = 0; i < nuvalue; i++)
setnilvalue(&u->uv[i].uv);
return u;
}