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fix sample + cosmetics + one more test

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This commit is contained in:
Anton Firszov 2021-10-15 14:14:21 +02:00
parent 4e16cfbdf4
commit a01a4bae18
1 changed files with 27 additions and 5 deletions
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30
crates/ide_assists/src/handlers/add_missing_match_arms.rs
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@ -21,7 +21,8 @@ use crate::{
// enum Action { Move { distance: u32 }, Stop }
//
// fn handle(action: Action) {
// match action $0 {
// match action {
// $0
// }
// }
// ```
@ -41,7 +42,7 @@ 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 let None = cursor_inside_simple_match_arm_list(&ctx, &match_expr, &match_arm_list) {
if let None = trivial_match_arm_list_at_cursor(&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 +193,13 @@ 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) -> Option<()> {
println!("---\n{:#?}\n{:#?}\n---", match_expr, match_arm_list);
fn trivial_match_arm_list_at_cursor(ctx: &AssistContext, match_expr : &MatchExpr, match_arm_list : &MatchArmList) -> Option<()> {
// match x { $0 }
if match_arm_list.arms().next() == None {
return Some(());
}
// match { _$0 => {...} }
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)?;
@ -973,6 +975,26 @@ fn main() {
);
}
#[test]
fn wildcard_inside_expression_not_applicable() {
check_assist_not_applicable(
add_missing_match_arms,
r#"
enum E { X, Y }
fn foo(e : E) {
match e {
_ => {
println!("1");$0
println!("2");
}
}
}
"#,
);
}
#[test]
fn add_missing_match_arms_qualifies_path() {
check_assist(