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use super::*;
pub(super) fn is_path_start(p: &Parser) -> bool {
AnyOf(&[IDENT, SELF_KW, SUPER_KW, COLONCOLON]).is_ahead(p)
}
pub(super) fn use_path(p: &mut Parser) {
path(p)
}
pub(super) fn type_path(p: &mut Parser) {
path(p)
}
fn path(p: &mut Parser) {
if !is_path_start(p) {
return;
}
let path = p.start();
path_segment(p, true);
let mut qual = path.complete(p, PATH);
loop {
let use_tree = match p.nth(1) {
STAR | L_CURLY => true,
_ => false,
};
if p.at(COLONCOLON) && !use_tree {
let path = qual.precede(p);
p.bump();
path_segment(p, false);
let path = path.complete(p, PATH);
qual = path;
} else {
break;
}
}
}
fn path_segment(p: &mut Parser, first: bool) {
let segment = p.start();
if first {
p.eat(COLONCOLON);
}
match p.current() {
IDENT | SELF_KW | SUPER_KW => p.bump(),
_ => p.error().message("expected identifier").emit(),
};
segment.complete(p, PATH_SEGMENT);
}
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