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-rw-r--r--crates/ide_assists/src/handlers/remove_dbg.rs105
1 files changed, 94 insertions, 11 deletions
diff --git a/crates/ide_assists/src/handlers/remove_dbg.rs b/crates/ide_assists/src/handlers/remove_dbg.rs
index 6114091f2..c8226550f 100644
--- a/crates/ide_assists/src/handlers/remove_dbg.rs
+++ b/crates/ide_assists/src/handlers/remove_dbg.rs
@@ -1,5 +1,5 @@
1use syntax::{ 1use syntax::{
2 ast::{self, AstNode}, 2 ast::{self, AstNode, AstToken},
3 match_ast, SyntaxElement, TextRange, TextSize, T, 3 match_ast, SyntaxElement, TextRange, TextSize, T,
4}; 4};
5 5
@@ -24,7 +24,39 @@ pub(crate) fn remove_dbg(acc: &mut Assists, ctx: &AssistContext) -> Option<()> {
24 let macro_call = ctx.find_node_at_offset::<ast::MacroCall>()?; 24 let macro_call = ctx.find_node_at_offset::<ast::MacroCall>()?;
25 let new_contents = adjusted_macro_contents(&macro_call)?; 25 let new_contents = adjusted_macro_contents(&macro_call)?;
26 26
27 let macro_text_range = macro_call.syntax().text_range(); 27 let parent = macro_call.syntax().parent();
28
29 let macro_text_range = if let Some(it) = parent.as_ref() {
30 if new_contents.is_empty() {
31 match_ast! {
32 match it {
33 ast::BlockExpr(_it) => {
34 macro_call.syntax()
35 .prev_sibling_or_token()
36 .and_then(whitespace_start)
37 .map(|start| TextRange::new(start, macro_call.syntax().text_range().end()))
38 .unwrap_or(macro_call.syntax().text_range())
39 },
40 ast::ExprStmt(it) => {
41 let start = it
42 .syntax()
43 .prev_sibling_or_token()
44 .and_then(whitespace_start)
45 .unwrap_or(it.syntax().text_range().start());
46 let end = it.syntax().text_range().end();
47
48 TextRange::new(start, end)
49 },
50 _ => macro_call.syntax().text_range()
51 }
52 }
53 } else {
54 macro_call.syntax().text_range()
55 }
56 } else {
57 macro_call.syntax().text_range()
58 };
59
28 let macro_end = if macro_call.semicolon_token().is_some() { 60 let macro_end = if macro_call.semicolon_token().is_some() {
29 macro_text_range.end() - TextSize::of(';') 61 macro_text_range.end() - TextSize::of(';')
30 } else { 62 } else {
@@ -36,11 +68,22 @@ pub(crate) fn remove_dbg(acc: &mut Assists, ctx: &AssistContext) -> Option<()> {
36 "Remove dbg!()", 68 "Remove dbg!()",
37 macro_text_range, 69 macro_text_range,
38 |builder| { 70 |builder| {
39 builder.replace(TextRange::new(macro_text_range.start(), macro_end), new_contents); 71 builder.replace(
72 TextRange::new(macro_text_range.start(), macro_end),
73 if new_contents.is_empty() && parent.and_then(ast::LetStmt::cast).is_some() {
74 ast::make::expr_unit().to_string()
75 } else {
76 new_contents
77 },
78 );
40 }, 79 },
41 ) 80 )
42} 81}
43 82
83fn whitespace_start(it: SyntaxElement) -> Option<TextSize> {
84 Some(it.into_token().and_then(ast::Whitespace::cast)?.syntax().text_range().start())
85}
86
44fn adjusted_macro_contents(macro_call: &ast::MacroCall) -> Option<String> { 87fn adjusted_macro_contents(macro_call: &ast::MacroCall) -> Option<String> {
45 let contents = get_valid_macrocall_contents(&macro_call, "dbg")?; 88 let contents = get_valid_macrocall_contents(&macro_call, "dbg")?;
46 let macro_text_with_brackets = macro_call.token_tree()?.syntax().text(); 89 let macro_text_with_brackets = macro_call.token_tree()?.syntax().text();
@@ -94,15 +137,11 @@ fn get_valid_macrocall_contents(
94 let mut contents_between_brackets = children_with_tokens.collect::<Vec<_>>(); 137 let mut contents_between_brackets = children_with_tokens.collect::<Vec<_>>();
95 let last_child = contents_between_brackets.pop()?; 138 let last_child = contents_between_brackets.pop()?;
96 139
97 if contents_between_brackets.is_empty() { 140 match (first_child.kind(), last_child.kind()) {
98 None 141 (T!['('], T![')']) | (T!['['], T![']']) | (T!['{'], T!['}']) => {
99 } else { 142 Some(contents_between_brackets)
100 match (first_child.kind(), last_child.kind()) {
101 (T!['('], T![')']) | (T!['['], T![']']) | (T!['{'], T!['}']) => {
102 Some(contents_between_brackets)
103 }
104 _ => None,
105 } 143 }
144 _ => None,
106 } 145 }
107} 146}
108 147
@@ -418,4 +457,48 @@ fn main() {
418}"#, 457}"#,
419 ); 458 );
420 } 459 }
460
461 #[test]
462 fn test_remove_empty_dbg() {
463 check_assist(remove_dbg, r#"fn foo() { $0dbg!(); }"#, r#"fn foo() { }"#);
464 check_assist(
465 remove_dbg,
466 r#"
467fn foo() {
468 $0dbg!();
469}
470"#,
471 r#"
472fn foo() {
473}
474"#,
475 );
476 check_assist(
477 remove_dbg,
478 r#"
479fn foo() {
480 let test = $0dbg!();
481}"#,
482 r#"
483fn foo() {
484 let test = ();
485}"#,
486 );
487 check_assist(
488 remove_dbg,
489 r#"
490fn foo() {
491 let t = {
492 println!("Hello, world");
493 $0dbg!()
494 };
495}"#,
496 r#"
497fn foo() {
498 let t = {
499 println!("Hello, world");
500 };
501}"#,
502 );
503 }
421} 504}