bytebraise_syntax/syntax/
syntax_node.rs

1// This module adapted from Rust Analyzer (https://github.com/rust-analyzer/rust-analyzer), which
2// is under MIT license.
3
4use crate::syntax::syntax_kind::SyntaxKind;
5
6impl From<SyntaxKind> for rowan::SyntaxKind {
7    fn from(kind: SyntaxKind) -> Self {
8        Self(kind as u16)
9    }
10}
11
12#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
13pub enum Lang {}
14
15impl rowan::Language for Lang {
16    type Kind = SyntaxKind;
17    fn kind_from_raw(raw: rowan::SyntaxKind) -> Self::Kind {
18        assert!(raw.0 <= SyntaxKind::RootNode as u16);
19        unsafe { std::mem::transmute::<u16, SyntaxKind>(raw.0) }
20    }
21    fn kind_to_raw(kind: Self::Kind) -> rowan::SyntaxKind {
22        kind.into()
23    }
24}
25
26pub type SyntaxNode = rowan::SyntaxNode<Lang>;
27#[allow(unused)]
28pub type SyntaxToken = rowan::SyntaxToken<Lang>;
29#[allow(unused)]
30pub type SyntaxElement = rowan::NodeOrToken<SyntaxNode, SyntaxToken>;
31#[allow(unused)]
32pub type SyntaxNodeChildren = rowan::SyntaxNodeChildren<Lang>;