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-rw-r--r--crates/ra_assists/src/introduce_variable.rs81
1 files changed, 80 insertions, 1 deletions
diff --git a/crates/ra_assists/src/introduce_variable.rs b/crates/ra_assists/src/introduce_variable.rs
index 934d1d6b3..954b97b05 100644
--- a/crates/ra_assists/src/introduce_variable.rs
+++ b/crates/ra_assists/src/introduce_variable.rs
@@ -44,7 +44,22 @@ pub(crate) fn introduce_variable(ctx: AssistCtx<impl HirDatabase>) -> Option<Ass
44 edit.replace(expr.syntax().range(), buf); 44 edit.replace(expr.syntax().range(), buf);
45 } else { 45 } else {
46 buf.push_str(";"); 46 buf.push_str(";");
47 indent.text().push_to(&mut buf); 47
48 // We want to maintain the indent level,
49 // but we do not want to duplicate possible
50 // extra newlines in the indent block
51 for chunk in indent.text().chunks() {
52 if chunk.starts_with("\r\n") {
53 buf.push_str("\r\n");
54 buf.push_str(chunk.trim_start_matches("\r\n"));
55 } else if chunk.starts_with("\n") {
56 buf.push_str("\n");
57 buf.push_str(chunk.trim_start_matches("\n"));
58 } else {
59 buf.push_str(chunk);
60 }
61 }
62
48 edit.target(expr.syntax().range()); 63 edit.target(expr.syntax().range());
49 edit.replace(expr.syntax().range(), "var_name".to_string()); 64 edit.replace(expr.syntax().range(), "var_name".to_string());
50 edit.insert(anchor_stmt.range().start(), buf); 65 edit.insert(anchor_stmt.range().start(), buf);
@@ -345,6 +360,70 @@ fn foo() -> u32 {
345 } 360 }
346 361
347 #[test] 362 #[test]
363 fn test_introduce_var_does_not_add_extra_whitespace() {
364 check_assist(
365 introduce_variable,
366 "
367fn foo() -> u32 {
368
369
370 r<|>eturn 2 + 2;
371}
372",
373 "
374fn foo() -> u32 {
375
376
377 let <|>var_name = 2 + 2;
378 return var_name;
379}
380",
381 );
382
383 check_assist(
384 introduce_variable,
385 "
386fn foo() -> u32 {
387
388 r<|>eturn 2 + 2;
389}
390",
391 "
392fn foo() -> u32 {
393
394 let <|>var_name = 2 + 2;
395 return var_name;
396}
397",
398 );
399
400 check_assist(
401 introduce_variable,
402 "
403fn foo() -> u32 {
404 let foo = 1;
405
406 // bar
407
408
409 r<|>eturn 2 + 2;
410}
411",
412 "
413fn foo() -> u32 {
414 let foo = 1;
415
416 // bar
417
418
419 let <|>var_name = 2 + 2;
420 return var_name;
421}
422",
423 );
424 }
425
426 #[test]
348 fn test_introduce_var_break() { 427 fn test_introduce_var_break() {
349 check_assist( 428 check_assist(
350 introduce_variable, 429 introduce_variable,