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

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

use super::lit::literal;

pub fn instr(p: &mut Parser) -> Option<CompletedMarker> {
    if !p.at(IDENT) {
        return None;
    }

    let instr = p.start();

    instr_name(p);
    instr_params(p);

    Some(instr.complete(p, INSTR))
}

fn instr_name(p: &mut Parser) {
    let instr_name = p.start();

    while p.at(IDENT) {
        p.do_bump();
    }

    instr_name.complete(p, INSTR_NAME);
}

fn instr_params(p: &mut Parser) {
    if let Some(start) = literal(p) {
        while literal(p).is_some() {}

        start.precede(p).complete(p, INSTR_PARAMS);
    }
}