omena-parser 0.3.0

Green-field cstree parser substrate for the Omena CSS parser stack
Documentation 
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//! Recovery token sets used by the parser.
//!
//! These constants define the public recovery policy for top-level, selector,
//! and declaration parsing entry points.

use omena_syntax::SyntaxKind;

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct TokenSet {
    kinds: &'static [SyntaxKind],
}

impl TokenSet {
    pub const fn new(kinds: &'static [SyntaxKind]) -> Self {
        Self { kinds }
    }

    pub fn contains(self, kind: SyntaxKind) -> bool {
        self.kinds.contains(&kind)
    }

    pub fn len(self) -> usize {
        self.kinds.len()
    }

    pub fn is_empty(self) -> bool {
        self.kinds.is_empty()
    }
}

pub const RECOVERY_TOP: TokenSet = TokenSet::new(&[
    SyntaxKind::AtKeyword,
    SyntaxKind::Dot,
    SyntaxKind::Hash,
    SyntaxKind::RightBrace,
    SyntaxKind::Semicolon,
]);

pub const RECOVERY_DECLARATION: TokenSet =
    TokenSet::new(&[SyntaxKind::Semicolon, SyntaxKind::RightBrace]);

pub const RECOVERY_SELECTOR: TokenSet = TokenSet::new(&[
    SyntaxKind::Comma,
    SyntaxKind::LeftBrace,
    SyntaxKind::RightBrace,
]);