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fill_match_arms bind pattern implementation

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This commit is contained in:
Toby Dimmick 2020-06-14 22:44:28 +01:00
parent 34db4edb80
commit 41f5471f3e
1 changed files with 14 additions and 2 deletions
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16
crates/ra_assists/src/handlers/fill_match_arms.rs
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@ -136,8 +136,20 @@ fn is_variant_missing(existing_arms: &mut Vec<MatchArm>, var: &Pat) -> bool {
}
fn does_pat_match_variant(pat: &Pat, var: &Pat) -> bool {
let pat_head = pat.syntax().first_child().map(|node| node.text());
let var_head = var.syntax().first_child().map(|node| node.text());
let first_node_text = |pat: &Pat| pat.syntax().first_child().map(|node| node.text());
let pat_head = match pat {
Pat::BindPat(bind_pat) => {
if let Some(p) = bind_pat.pat() {
first_node_text(&p)
} else {
return false;
}
}
pat => first_node_text(pat),
};
let var_head = first_node_text(var);
pat_head == var_head
}