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|
use super::*;
pub(super) fn opt_type_arg_list(p: &mut Parser, colon_colon_required: bool) {
let m;
match (colon_colon_required, p.nth(0), p.nth(1)) {
(_, COLONCOLON, L_ANGLE) => {
m = p.start();
p.bump();
p.bump();
}
(false, L_ANGLE, _) => {
m = p.start();
p.bump();
}
_ => return,
};
while !p.at(EOF) && !p.at(R_ANGLE) {
type_arg(p);
if !p.at(R_ANGLE) && !p.expect(COMMA) {
break;
}
}
p.expect(R_ANGLE);
m.complete(p, TYPE_ARG_LIST);
}
// test type_arg
// type A = B<'static, i32, Item=u64>;
fn type_arg(p: &mut Parser) {
let m = p.start();
match p.current() {
LIFETIME => {
p.bump();
m.complete(p, LIFETIME_ARG);
}
IDENT if p.nth(1) == EQ => {
name_ref(p);
p.bump();
types::type_(p);
m.complete(p, ASSOC_TYPE_ARG);
}
_ => {
types::type_(p);
m.complete(p, TYPE_ARG);
}
}
}
|
