iowo/crates/lang/src/lib.rs

#![feature(type_alias_impl_trait, lint_reasons)]

use crate::lst_parser::syntax_kind::SyntaxKind;

#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum Lang {}
impl rowan::Language for Lang {
    type Kind = SyntaxKind;
    #[allow(unsafe_code)]
    fn kind_from_raw(raw: rowan::SyntaxKind) -> Self::Kind {
        assert!(raw.0 <= SyntaxKind::ROOT as u16);
        unsafe { std::mem::transmute::<u16, SyntaxKind>(raw.0) }
    }
    fn kind_to_raw(kind: Self::Kind) -> rowan::SyntaxKind {
        kind.into()
    }
}

pub type SyntaxNode = rowan::SyntaxNode<Lang>;
pub type SyntaxToken = rowan::SyntaxNode<Lang>;
pub type SyntaxElement = rowan::NodeOrToken<SyntaxNode, SyntaxToken>;

pub mod ast;
pub mod lst_parser;