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Handle extended key value attr in mbe

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This commit is contained in:
Edwin Cheng 2021-04-17 14:31:52 +08:00
parent df5b6f7d45
commit c4173bb468
3 changed files with 35 additions and 48 deletions
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28
crates/parser/src/grammar/attributes.rs
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@ -14,6 +14,21 @@ pub(super) fn outer_attrs(p: &mut Parser) {
}
}
pub(super) fn meta(p: &mut Parser) {
paths::use_path(p);
match p.current() {
T![=] => {
p.bump(T![=]);
if expressions::expr(p).0.is_none() {
p.error("expected expression");
}
}
T!['('] | T!['['] | T!['{'] => items::token_tree(p),
_ => {}
}
}
fn attr(p: &mut Parser, inner: bool) {
let attr = p.start();
assert!(p.at(T![#]));
@ -25,18 +40,7 @@ fn attr(p: &mut Parser, inner: bool) {
}
if p.eat(T!['[']) {
paths::use_path(p);
match p.current() {
T![=] => {
p.bump(T![=]);
if expressions::expr(p).0.is_none() {
p.error("expected expression");
}
}
T!['('] | T!['['] | T!['{'] => items::token_tree(p),
_ => {}
}
meta(p);
if !p.eat(T![']']) {
p.error("expected `]`");