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simple implementation

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This commit is contained in:
Anton Firszov 2021-10-15 13:19:46 +02:00
parent 1e303cc035
commit 4e16cfbdf4
1 changed files with 13 additions and 5 deletions
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18
crates/ide_assists/src/handlers/add_missing_match_arms.rs
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@ -41,7 +41,7 @@ pub(crate) fn add_missing_match_arms(acc: &mut Assists, ctx: &AssistContext) ->
let match_arm_list = match_expr.match_arm_list()?;
let target_range : TextRange;
if !cursor_inside_simple_match_arm_list(&ctx, &match_expr, &match_arm_list) {
if let None = cursor_inside_simple_match_arm_list(&ctx, &match_expr, &match_arm_list) {
target_range = TextRange::new(
ctx.sema.original_range(match_expr.syntax()).range.start(),
ctx.sema.original_range(match_arm_list.syntax()).range.start(),
@ -192,12 +192,20 @@ pub(crate) fn add_missing_match_arms(acc: &mut Assists, ctx: &AssistContext) ->
)
}
fn cursor_inside_simple_match_arm_list(ctx: &AssistContext, match_expr : &MatchExpr, match_arm_list : &MatchArmList) -> bool {
// println!("---\n{:#?}\n{:#?}\n---", match_expr, match_arm_list);
fn cursor_inside_simple_match_arm_list(ctx: &AssistContext, match_expr : &MatchExpr, match_arm_list : &MatchArmList) -> Option<()> {
println!("---\n{:#?}\n{:#?}\n---", match_expr, match_arm_list);
if match_arm_list.arms().next() == None {
return true;
return Some(());
}
false
let wild_pat = ctx.find_node_at_offset_with_descend::<ast::WildcardPat>()?;
let arm = wild_pat.syntax().parent().and_then(ast::MatchArm::cast)?;
let arm_match_expr = arm.syntax().ancestors().nth(2).and_then(ast::MatchExpr::cast)?;
if arm_match_expr == *match_expr {
return Some(())
}
None
}
fn is_variant_missing(existing_pats: &[Pat], var: &Pat) -> bool {