func (self *RefLua) init(state State, lobject int) {
self.VM = state.VM
C.lua_pushvalue(state.L, C.int(lobject))
refvalue := C.luaL_ref(state.L, C.LUA_REGISTRYINDEX)
self.Ref = int(refvalue)
runtime.SetFinalizer(self, func(r *RefLua) {
r.Release()
})
}
func luaGetSubTable(L *C.lua_State, table C.int, key string) (bool, error) {
pushStringToLua(L, key)
C.lua_gettable(L, table)
ltype := C.lua_type(L, -1)
if ltype == C.LUA_TNIL {
C.lua_createtable(L, 0, 0)
// table[key] = {}
pushStringToLua(L, key)
C.lua_pushvalue(L, -2)
C.lua_settable(L, table)
}
ltype = C.lua_type(L, -1)
if ltype != C.LUA_TTABLE {
C.lua_settop(L, -2)
return false, fmt.Errorf("field `%v` exist, and it is not a table", key)
}
return true, nil
}
// lua_pushvalue
func (L *State) PushValue(index int) {
C.lua_pushvalue(L.s, C.int(index))
}
// Pushes a copy of the element at the given valid index onto the stack.
func (this *State) Pushvalue(index int) {
C.lua_pushvalue(this.luastate, C.int(index))
}
// Pushes a copy of the element at the given valid index onto the stack.
func (s *State) Pushvalue(index int) {
C.lua_pushvalue(s.l, C.int(index))
}