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Recover better for more delimited sequences

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This commit is contained in:
Lukas Wirth 2023-02-13 14:47:27 +01:00
parent 244a48d13d
commit 4f6b5f41d4
20 changed files with 153 additions and 124 deletions
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28
crates/parser/src/grammar/expressions.rs
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@ -1,5 +1,7 @@
mod atom;
use crate::grammar::attributes::ATTRIBUTE_FIRST;
use super::*;
pub(crate) use self::atom::{block_expr, match_arm_list};
@ -572,27 +574,11 @@ fn cast_expr(p: &mut Parser<'_>, lhs: CompletedMarker) -> CompletedMarker {
fn arg_list(p: &mut Parser<'_>) {
assert!(p.at(T!['(']));
let m = p.start();
p.bump(T!['(']);
while !p.at(T![')']) && !p.at(EOF) {
// test arg_with_attr
// fn main() {
// foo(#[attr] 92)
// }
if !expr(p) {
break;
}
if !p.at(T![,]) {
if p.at_ts(EXPR_FIRST) {
p.error("expected `,`");
continue;
} else {
break;
}
} else {
p.bump(T![,]);
}
}
p.eat(T![')']);
// test arg_with_attr
// fn main() {
// foo(#[attr] 92)
// }
delimited(p, T!['('], T![')'], T![,], EXPR_FIRST.union(ATTRIBUTE_FIRST), expr);
m.complete(p, ARG_LIST);
}