fix(css): reformat issue in comments between compound selectors

crates/biome_css_formatter/src/comments.rs

@@ -1,5 +1,7 @@
 use crate::prelude::*;
-use biome_css_syntax::{AnyCssDeclarationName, CssFunction, CssIdentifier, CssLanguage, TextLen};
+use biome_css_syntax::{
+    AnyCssDeclarationName, CssComplexSelector, CssFunction, CssIdentifier, CssLanguage, TextLen,
+};
 use biome_diagnostics::category;
 use biome_formatter::comments::{
     is_doc_comment, CommentKind, CommentPlacement, CommentStyle, CommentTextPosition, Comments,
@@ -89,15 +91,15 @@ impl CommentStyle for CssCommentStyle {
         comment: DecoratedComment<Self::Language>,
     ) -> CommentPlacement<Self::Language> {
         match comment.text_position() {
-            CommentTextPosition::EndOfLine => {
-                handle_function_comment(comment).or_else(handle_declaration_name_comment)
-            }
-            CommentTextPosition::OwnLine => {
-                handle_function_comment(comment).or_else(handle_declaration_name_comment)
-            }
-            CommentTextPosition::SameLine => {
-                handle_function_comment(comment).or_else(handle_declaration_name_comment)
-            }
+            CommentTextPosition::EndOfLine => handle_function_comment(comment)
+                .or_else(handle_declaration_name_comment)
+                .or_else(handle_complex_selector_comment),
+            CommentTextPosition::OwnLine => handle_function_comment(comment)
+                .or_else(handle_declaration_name_comment)
+                .or_else(handle_complex_selector_comment),
+            CommentTextPosition::SameLine => handle_function_comment(comment)
+                .or_else(handle_declaration_name_comment)
+                .or_else(handle_complex_selector_comment),
         }
     }
 }
@@ -130,3 +132,14 @@ fn handle_function_comment(
         CommentPlacement::Default(comment)
     }
 }
+
+fn handle_complex_selector_comment(
+    comment: DecoratedComment<CssLanguage>,
+) -> CommentPlacement<CssLanguage> {
+    if let Some(complex) = CssComplexSelector::cast_ref(comment.enclosing_node()) {
+        if let Ok(right) = complex.right() {
+            return CommentPlacement::leading(right.into_syntax(), comment);
+        }
+    }
+    CommentPlacement::Default(comment)
+}

crates/biome_css_formatter/tests/quick_test.rs

@@ -12,8 +12,12 @@ mod language {
 #[test]
 // use this test check if your snippet prints as you wish, without using a snapshot
 fn quick_test() {
-    let src = r#"
-@charset "UTF-8";
+    let src = r#"foo
+  /* a comment */
+
+  .aRule {
+  color: red;
+}
 "#;
     let parse = parse_css(src, CssParserOptions::default());
     println!("{parse:#?}");

crates/biome_css_formatter/tests/specs/css/issue_3229.css

@@ -0,0 +1,39 @@
+foo /* a comment */
+.aRule {
+	color: red;
+}
+
+foo /* a comment */
+
+.aRule {
+	color: red;
+}
+
+foo
+
+
+	/* a comment */
+
+.aRule {
+	color: red;
+}
+
+/* input */
+foo
+
+	/* a comment */
+
+.aRule {
+	color: red
+}
+
+
+
+
+/* first format */
+foo
+	/* a comment */
+
+.aRule {
+	color: red;
+}

crates/biome_css_formatter/tests/specs/css/issue_3229.css.snap

@@ -0,0 +1,100 @@
+---
+source: crates/biome_formatter_test/src/snapshot_builder.rs
+info: css/issue_3229.css
+snapshot_kind: text
+---
+# Input
+
+```css
+foo /* a comment */
+.aRule {
+	color: red;
+}
+
+foo /* a comment */
+
+.aRule {
+	color: red;
+}
+
+foo
+
+
+	/* a comment */
+
+.aRule {
+	color: red;
+}
+
+/* input */
+foo
+
+	/* a comment */
+
+.aRule {
+	color: red
+}
+
+
+
+
+/* first format */
+foo
+	/* a comment */
+
+.aRule {
+	color: red;
+}
+
+```
+
+
+=============================
+
+# Outputs
+
+## Output 1
+
+-----
+Indent style: Tab
+Indent width: 2
+Line ending: LF
+Line width: 80
+Quote style: Double Quotes
+-----
+
+```css
+foo /* a comment */ .aRule {
+	color: red;
+}
+
+foo
+	/* a comment */
+
+	.aRule {
+	color: red;
+}
+
+foo
+	/* a comment */
+
+	.aRule {
+	color: red;
+}
+
+/* input */
+foo
+	/* a comment */
+
+	.aRule {
+	color: red;
+}
+
+/* first format */
+foo
+	/* a comment */
+
+	.aRule {
+	color: red;
+}
+```

crates/biome_css_formatter/tests/specs/prettier/css/atrule/supports.css.snap

@@ -1,6 +1,7 @@
 ---
 source: crates/biome_formatter_test/src/snapshot_builder.rs
 info: css/atrule/supports.css
+snapshot_kind: text
 ---
 # Input
 

crates/biome_css_formatter/tests/specs/prettier/css/bom/bom.css.snap

@@ -1,6 +1,7 @@
 ---
 source: crates/biome_formatter_test/src/snapshot_builder.rs
 info: css/bom/bom.css
+snapshot_kind: text
 ---
 # Input
 

crates/biome_css_formatter/tests/specs/prettier/css/comments/custom-properties.css.snap

@@ -1,6 +1,7 @@
 ---
 source: crates/biome_formatter_test/src/snapshot_builder.rs
 info: css/comments/custom-properties.css
+snapshot_kind: text
 ---
 # Input
 

crates/biome_css_formatter/tests/specs/prettier/css/comments/selectors.css.snap

@@ -1,6 +1,7 @@
 ---
 source: crates/biome_formatter_test/src/snapshot_builder.rs
 info: css/comments/selectors.css
+snapshot_kind: text
 ---
 # Input
 
@@ -231,8 +232,8 @@ input:not(/* comment 125 */[/* comment 126 */disabled/* comment 127 */]/* commen
 
 -/* comment 29 */
 -.element /* comment 30 */ > /* comment 31 */ .element /* comment 32 */ {
-+/* comment 29 */ .element /* comment 30 */
-+  > /* comment 31 */ .element /* comment 32 */ {
++/* comment 29 */ .element
++  > /* comment 30 */ /* comment 31 */ .element /* comment 32 */ {
  }
  /* comment 33 */
  .element
@@ -249,8 +250,8 @@ input:not(/* comment 125 */[/* comment 126 */disabled/* comment 127 */]/* commen
 
 -/* comment 37 */
 -.element /* comment 38 */ + /* comment 39 */ .element /* comment 40 */ {
-+/* comment 37 */ .element /* comment 38 */
-+  + /* comment 39 */ .element /* comment 40 */ {
++/* comment 37 */ .element
++  + /* comment 38 */ /* comment 39 */ .element /* comment 40 */ {
  }
  /* comment 41 */
  .element
@@ -267,8 +268,8 @@ input:not(/* comment 125 */[/* comment 126 */disabled/* comment 127 */]/* commen
 
 -/* comment 45 */
 -.element /* comment 46 */ ~ /* comment 47 */ .element /* comment 48 */ {
-+/* comment 45 */ .element /* comment 46 */
-+  ~ /* comment 47 */ .element /* comment 48 */ {
++/* comment 45 */ .element
++  ~ /* comment 46 */ /* comment 47 */ .element /* comment 48 */ {
  }
  /* comment 49 */
  .element
@@ -442,8 +443,8 @@ input:not(/* comment 125 */[/* comment 126 */disabled/* comment 127 */]/* commen
 -/* comment 167 */
 -article /* comment 168 */ :--heading /* comment 169 */ + /* comment 170 */ p /* comment 171 */ {
 +/* comment 167 */ article
-+  /* comment 168 */ :--heading /* comment 169 */
-+  + /* comment 170 */ p /* comment 171 */ {
++  /* comment 168 */ :--heading
++  + /* comment 169 */ /* comment 170 */ p /* comment 171 */ {
  }
 
 -/* comment 172 */
@@ -534,8 +535,8 @@ input:not(/* comment 125 */[/* comment 126 */disabled/* comment 127 */]/* commen
 {
 }
 
-/* comment 29 */ .element /* comment 30 */
-  > /* comment 31 */ .element /* comment 32 */ {
+/* comment 29 */ .element
+  > /* comment 30 */ /* comment 31 */ .element /* comment 32 */ {
 }
 /* comment 33 */
 .element
@@ -545,8 +546,8 @@ input:not(/* comment 125 */[/* comment 126 */disabled/* comment 127 */]/* commen
 {
 }
 
-/* comment 37 */ .element /* comment 38 */
-  + /* comment 39 */ .element /* comment 40 */ {
+/* comment 37 */ .element
+  + /* comment 38 */ /* comment 39 */ .element /* comment 40 */ {
 }
 /* comment 41 */
 .element
@@ -556,8 +557,8 @@ input:not(/* comment 125 */[/* comment 126 */disabled/* comment 127 */]/* commen
 {
 }
 
-/* comment 45 */ .element /* comment 46 */
-  ~ /* comment 47 */ .element /* comment 48 */ {
+/* comment 45 */ .element
+  ~ /* comment 46 */ /* comment 47 */ .element /* comment 48 */ {
 }
 /* comment 49 */
 .element
@@ -679,8 +680,8 @@ input:not(
 } /* comment 166 */
 
 /* comment 167 */ article
-  /* comment 168 */ :--heading /* comment 169 */
-  + /* comment 170 */ p /* comment 171 */ {
+  /* comment 168 */ :--heading
+  + /* comment 169 */ /* comment 170 */ p /* comment 171 */ {
 }
 
 /* comment 172 */ .foo

crates/biome_css_formatter/tests/specs/prettier/css/front-matter/custom-parser.css.snap

@@ -1,6 +1,7 @@
 ---
 source: crates/biome_formatter_test/src/snapshot_builder.rs
 info: css/front-matter/custom-parser.css
+snapshot_kind: text
 ---
 # Input
 
@@ -21,7 +22,7 @@ description: Description
 ```diff
 --- Prettier
 +++ Biome
-@@ -1,8 +1,6 @@
+@@ -1,8 +1,7 @@
  ---mycustomparser
 -title: Title
 -description: Description
@@ -31,7 +32,8 @@ description: Description
 -.something {
 +  title:Title
 +  description:Description
-+  --- /* comment */
++  ---
++  /* comment */
 +  .something {
  }
 ```
@@ -42,7 +44,8 @@ description: Description
 ---mycustomparser
   title:Title
   description:Description
-  --- /* comment */
+  ---
+  /* comment */
   .something {
 }
 ```

crates/biome_css_formatter/tests/specs/prettier/css/front-matter/empty.css.snap

@@ -1,6 +1,7 @@
 ---
 source: crates/biome_formatter_test/src/snapshot_builder.rs
 info: css/front-matter/empty.css
+snapshot_kind: text
 ---
 # Input
 

crates/biome_css_formatter/tests/specs/prettier/css/yaml/comment_after.css.snap

@@ -1,6 +1,7 @@
 ---
 source: crates/biome_formatter_test/src/snapshot_builder.rs
 info: css/yaml/comment_after.css
+snapshot_kind: text
 ---
 # Input