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use super::*;
pub(super) const ATTRIBUTE_FIRST: TokenSet = TokenSet::new(&[T![#]]);
pub(super) fn inner_attrs(p: &mut Parser<'_>) {
while p.at(T![#]) && p.nth(1) == T![!] {
attr(p, true);
}
}
pub(super) fn outer_attrs(p: &mut Parser<'_>) {
while p.at(T![#]) {
attr(p, false);
}
}
fn attr(p: &mut Parser<'_>, inner: bool) {
assert!(p.at(T![#]));
let attr = p.start();
p.bump(T![#]);
if inner {
p.bump(T![!]);
}
if p.eat(T!['[']) {
meta(p);
if !p.eat(T![']']) {
p.error("expected `]`");
}
} else {
p.error("expected `[`");
}
attr.complete(p, ATTR);
}
pub(super) fn meta(p: &mut Parser<'_>) {
let meta = p.start();
paths::use_path(p);
match p.current() {
T![=] => {
p.bump(T![=]);
if !expressions::expr(p) {
p.error("expected expression");
}
}
T!['('] | T!['['] | T!['{'] => items::token_tree(p),
_ => {}
}
meta.complete(p, META);
}
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