iowo/crates/lang/src/parser/grammar/expression/lit.rs

use enumset::enum_set;

use crate::parser::{
    syntax_kind::{SyntaxKind::*, TokenSet},
    CompletedMarker, Parser,
};

const LIT_TOKENS: TokenSet = enum_set!(INT_NUM | FLOAT_NUM | STRING);

pub fn literal(p: &mut Parser) -> Option<CompletedMarker> {
    if !LIT_TOKENS.contains(p.current()) {
        return None;
    }

    let lit = p.start("lit");

    p.do_bump();

    Some(lit.complete(p, LITERAL))
}