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Fix assists assuming comma belonging to MATCH_ARM_LIST

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This commit is contained in:
Lukas Wirth 2021-07-30 15:51:07 +02:00
parent f04cff102f
commit 82c1e61887
3 changed files with 9 additions and 13 deletions
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14
crates/syntax/src/ast/edit_in_place.rs
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@ -359,14 +359,10 @@ impl ast::MatchArmList {
let mut elements = Vec::new();
let position = match self.arms().last() {
Some(last_arm) => {
let comma = last_arm
.syntax()
.siblings_with_tokens(Direction::Next)
.find(|it| it.kind() == T![,]);
if needs_comma(&last_arm) && comma.is_none() {
elements.push(make::token(SyntaxKind::COMMA).into());
if needs_comma(&last_arm) {
ted::append_child(last_arm.syntax(), make::token(SyntaxKind::COMMA));
}
Position::after(comma.unwrap_or_else(|| last_arm.syntax().clone().into()))
Position::after(last_arm.syntax().clone())
}
None => match self.l_curly_token() {
Some(it) => Position::after(it),
@ -377,12 +373,12 @@ impl ast::MatchArmList {
elements.push(make::tokens::whitespace(&format!("\n{}", indent)).into());
elements.push(arm.syntax().clone().into());
if needs_comma(&arm) {
elements.push(make::token(SyntaxKind::COMMA).into());
ted::append_child(arm.syntax(), make::token(SyntaxKind::COMMA));
}
ted::insert_all(position, elements);
fn needs_comma(arm: &ast::MatchArm) -> bool {
arm.expr().map_or(false, |e| !e.is_block_like())
arm.expr().map_or(false, |e| !e.is_block_like()) && arm.comma_token().is_none()
}
}
}