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pub mod diagnostics;
pub mod fs;
mod input;
pub mod range;
pub mod text;
pub mod variables;

pub use self::input::Input;

pub type StaticCow<T> = std::borrow::Cow<'static, T>;

pub type Symbol = string_interner::DefaultSymbol;

pub struct StringInterner(
    string_interner::StringInterner<
        string_interner::backend::StringBackend<Symbol>,
        core::hash::BuildHasherDefault<rustc_hash::FxHasher>,
    >,
);
impl Default for StringInterner {
    fn default() -> Self {
        Self(string_interner::StringInterner::new())
    }
}
impl StringInterner {
    #[inline]
    pub fn new() -> Self {
        Self::default()
    }

    #[inline]
    pub fn get_or_intern(&mut self, s: impl AsRef<str>) -> Symbol {
        self.0.get_or_intern(s)
    }

    #[track_caller]
    pub fn resolve(&self, symbol: Symbol) -> &str {
        self.0.resolve(symbol).expect("invalid symbol")
    }
}