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[rust.git] / src / librustc_errors / registry.rs
1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
4 //
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10
11 use rustc_data_structures::fx::FxHashMap;
12
13 #[derive(Clone)]
14 pub struct Registry {
15     descriptions: FxHashMap<&'static str, &'static str>,
16 }
17
18 impl Registry {
19     pub fn new(descriptions: &[(&'static str, &'static str)]) -> Registry {
20         Registry { descriptions: descriptions.iter().cloned().collect() }
21     }
22
23     pub fn find_description(&self, code: &str) -> Option<&'static str> {
24         self.descriptions.get(code).cloned()
25     }
26 }