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-rw-r--r--crates/ide_assists/src/handlers/early_return.rs77
1 files changed, 70 insertions, 7 deletions
diff --git a/crates/ide_assists/src/handlers/early_return.rs b/crates/ide_assists/src/handlers/early_return.rs
index 9e0918477..2148df7c8 100644
--- a/crates/ide_assists/src/handlers/early_return.rs
+++ b/crates/ide_assists/src/handlers/early_return.rs
@@ -56,7 +56,11 @@ pub(crate) fn convert_to_guarded_return(acc: &mut Assists, ctx: &AssistContext)
56 match path.qualifier() { 56 match path.qualifier() {
57 None => { 57 None => {
58 let bound_ident = pat.fields().next().unwrap(); 58 let bound_ident = pat.fields().next().unwrap();
59 Some((path, bound_ident)) 59 if ast::IdentPat::can_cast(bound_ident.syntax().kind()) {
60 Some((path, bound_ident))
61 } else {
62 return None;
63 }
60 } 64 }
61 Some(_) => return None, 65 Some(_) => return None,
62 } 66 }
@@ -143,10 +147,7 @@ pub(crate) fn convert_to_guarded_return(acc: &mut Assists, ctx: &AssistContext)
143 make::expr_match(cond_expr, make::match_arm_list(vec![happy_arm, sad_arm])) 147 make::expr_match(cond_expr, make::match_arm_list(vec![happy_arm, sad_arm]))
144 }; 148 };
145 149
146 let let_stmt = make::let_stmt( 150 let let_stmt = make::let_stmt(bound_ident, Some(match_expr));
147 make::ident_pat(make::name(&bound_ident.syntax().to_string())).into(),
148 Some(match_expr),
149 );
150 let let_stmt = let_stmt.indent(if_indent_level); 151 let let_stmt = let_stmt.indent(if_indent_level);
151 replace(let_stmt.syntax(), &then_block, &parent_block, &if_expr) 152 replace(let_stmt.syntax(), &then_block, &parent_block, &if_expr)
152 } 153 }
@@ -284,7 +285,7 @@ mod tests {
284 r#" 285 r#"
285 fn main(n: Option<String>) { 286 fn main(n: Option<String>) {
286 bar(); 287 bar();
287 if$0 let Ok(n) = n { 288 if$0 let Some(n) = n {
288 foo(n); 289 foo(n);
289 290
290 //comment 291 //comment
@@ -296,7 +297,69 @@ mod tests {
296 fn main(n: Option<String>) { 297 fn main(n: Option<String>) {
297 bar(); 298 bar();
298 let n = match n { 299 let n = match n {
299 Ok(it) => it, 300 Some(it) => it,
301 _ => return,
302 };
303 foo(n);
304
305 //comment
306 bar();
307 }
308 "#,
309 );
310 }
311
312 #[test]
313 fn convert_let_mut_ok_inside_fn() {
314 check_assist(
315 convert_to_guarded_return,
316 r#"
317 fn main(n: Option<String>) {
318 bar();
319 if$0 let Some(mut n) = n {
320 foo(n);
321
322 //comment
323 bar();
324 }
325 }
326 "#,
327 r#"
328 fn main(n: Option<String>) {
329 bar();
330 let mut n = match n {
331 Some(it) => it,
332 _ => return,
333 };
334 foo(n);
335
336 //comment
337 bar();
338 }
339 "#,
340 );
341 }
342
343 #[test]
344 fn convert_let_ref_ok_inside_fn() {
345 check_assist(
346 convert_to_guarded_return,
347 r#"
348 fn main(n: Option<&str>) {
349 bar();
350 if$0 let Some(ref n) = n {
351 foo(n);
352
353 //comment
354 bar();
355 }
356 }
357 "#,
358 r#"
359 fn main(n: Option<&str>) {
360 bar();
361 let ref n = match n {
362 Some(it) => it,
300 _ => return, 363 _ => return,
301 }; 364 };
302 foo(n); 365 foo(n);