luaext/types/
nil.rs

1use lua::{Index, ToLua, FromLua, State};
2use types::{LuaStackable};
3
4/// Represents a nil value on the Lua stack
5pub struct LuaNil {
6    index: Index
7}
8
9impl LuaNil {
10    /// Create a new LuaNil given an index
11    pub fn new(i: Index) -> LuaNil {
12        LuaNil {
13            index: i
14        }
15    }
16}
17
18impl LuaStackable for LuaNil {
19    fn get_pos(&self) -> Index {
20        self.index
21    }
22}
23
24impl ToLua for LuaNil {
25    fn to_lua(&self, state: &mut State) {
26        state.push_value(self.get_pos());
27    }
28}
29
30impl FromLua for LuaNil {
31    fn from_lua(state: &mut State, index: Index) -> Option<LuaNil> {
32        if state.is_nil(index) {
33            Some(LuaNil::new(index))
34        } else {
35            None
36        }
37    }
38}
luaext/types/nil.rs

luaext/types/
nil.rs
