26 lines
495 B
Rust
26 lines
495 B
Rust
|
// translate and keeps track of strings
|
||
|
|
|
||
|
|
use std::collections::HashMap;
|
||
|
|
|
||
|
|
pub type IdType = u32;
|
||
|
|
|
||
|
|
#[derive(Clone, Debug)]
|
||
|
|
pub struct Translator {
|
||
|
|
strings: HashMap<String, IdType>,
|
||
|
|
last_id: IdType
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Translator {
|
||
|
|
pub fn new() -> Self {
|
||
|
|
Translator { strings: HashMap::new(), last_id: 0 }
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Translator {
|
||
|
|
pub fn convert<S: AsRef<str>>(&mut self, s: S) -> IdType {
|
||
|
|
*(self.strings.entry(s.as_ref().to_string()).or_insert({self.last_id += 1; self.last_id}))
|
||
|
|
}
|
||
|
|
}
|