use rustc_data_structures::fx::FxHashMap;
#[derive(Debug)]
pub struct InvalidErrorCode;
#[derive(Clone)]
pub struct Registry {
long_descriptions: FxHashMap<&'static str, &'static str>,
}
impl Registry {
pub fn new(long_descriptions: &[(&'static str, &'static str)]) -> Registry {
Registry { long_descriptions: long_descriptions.iter().copied().collect() }
}
/// Returns `InvalidErrorCode` if the code requested does not exist in the
/// registry.
pub fn try_find_description(&self, code: &str) -> Result<&'static str, InvalidErrorCode> {
self.long_descriptions.get(code).copied().ok_or(InvalidErrorCode)
}
}