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Optional scope name

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greg 2018-05-10 22:32:36 -07:00
parent e7615fda8b
commit c3be644133
1 changed files with 8 additions and 3 deletions
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11
schala-lang/src/util.rs
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@ -5,7 +5,8 @@ use std::cmp::Eq;
#[derive(Default, Debug)]
pub struct StateStack<'a, T: 'a, V: 'a> where T: Hash + Eq {
parent: Option<&'a StateStack<'a, T, V>>,
values: HashMap<T, V>
values: HashMap<T, V>,
scope_name: Option<String>
}
impl<'a, T, V> StateStack<'a, T, V> where T: Hash + Eq {
@ -19,11 +20,15 @@ impl<'a, T, V> StateStack<'a, T, V> where T: Hash + Eq {
(Some(value), _) => Some(value),
}
}
pub fn new_frame(&'a self) -> StateStack<'a, T, V> where T: Hash + Eq {
pub fn new_frame(&'a self, name: Option<String>) -> StateStack<'a, T, V> where T: Hash + Eq {
StateStack {
parent: Some(self),
values: HashMap::default()
values: HashMap::default(),
scope_name: name,
}
}
pub fn get_name(&self) -> Option<&String> {
self.scope_name.as_ref()
}
}