cmark_syntax/languages/
rust.rs

1use crate::{Highlight, Kind};
2use logos::Logos;
3
4#[derive(Logos, PartialEq, Eq, Clone, Copy, Debug)]
5pub enum Rust {
6    #[regex("[a-z_$][a-zA-Z0-9_]*!?")]
7    #[regex("[A-Z_]*!?", priority = 3)]
8    Identifier,
9
10    #[regex("[A-Z][a-zA-Z0-9_]*!?")]
11    StrongIdentifier,
12
13    #[regex("\"([^\"\\n]|\\\\[\"\\n])*\"")]
14    #[regex("'([^']|\\\\[^'\\n \\t]*)'")]
15    #[regex("r\"[^\"]*\"")]
16    #[regex("r#\"#?([^#]|[^\"]#)*\"#")]
17    #[regex("b\"([^\"\\n]|\\\\[\"\\n])*\"")]
18    #[regex("b'([^']|\\\\[^'\\n \\t]*)'")]
19    #[regex("br\"[^\"]*\"")]
20    #[regex("br#\"#?([^#]|[^\"]#)*\"#")]
21    #[regex("[0-9][0-9_]*")]
22    #[regex("0[xX][0-9a-fA-F_]+")]
23    #[regex("0[oO][0-7_]+")]
24    #[regex("0[bB][01_]+")]
25    Literal,
26
27    #[regex(r#"\?|!|\^|-|\+|\*|&|/|\\|<|>|=|=>|->|_|#\[[^\]]*\]|&"#)]
28    Glyph,
29
30    #[regex("\\.|:", priority = 3)]
31    GlyphCtx,
32
33    #[regex("\\{|\\}|\\[|\\]|\\(|\\)")]
34    Bracket,
35
36    #[regex("'[a-zA-Z_][a-zA-Z0-9_]*")]
37    Lifetime,
38
39    #[regex("as|break|const|continue|crate|dyn|else|extern")]
40    #[regex("false|for|if|impl|in|let|loop|match|mod|move|mut")]
41    #[regex("pub|ref|return|self|Self|static|super")]
42    #[regex("true|unsafe|use|where|while")]
43    #[regex("abstract|async|await|become|box|do|final|macro")]
44    #[regex("override|priv|try|typeof|unsized|virtual|yield")]
45    Keyword,
46
47    #[regex("fn|enum|struct|type|trait")]
48    KeywordCtx,
49
50    #[regex("str|bool|[ui](8|16|32|64|size)|f32|f64")]
51    Special,
52
53    #[regex("//[^\n]*")]
54    #[regex("/\\*([^/]|[^*]/)*\\*/")]
55    Comment,
56
57    None,
58}
59
60impl Highlight for Rust {
61    const LANG: &'static str = "rust";
62    const START: Self = Self::None;
63
64    fn kind(tokens: &[Self; 2]) -> Kind {
65        use Rust::*;
66
67        match tokens {
68            [KeywordCtx, StrongIdentifier]
69            | [KeywordCtx, Identifier]
70            | [GlyphCtx, Identifier]
71            | [_, Lifetime] => Kind::SpecialIdentifier,
72            [_, Identifier] => Kind::Identifier,
73            [_, StrongIdentifier] | [_, Special] => Kind::StrongIdentifier,
74            [_, Literal] => Kind::Literal,
75            [_, Glyph] | [_, GlyphCtx] => Kind::Glyph,
76            [_, Keyword] | [_, KeywordCtx] => Kind::Keyword,
77            [_, Comment] => Kind::Comment,
78            _ => Kind::None,
79        }
80    }
81}
cmark_syntax/languages/rust.rs

cmark_syntax/languages/
rust.rs
