Format delete statement

crates/ruff_python_formatter/resources/test/fixtures/ruff/statement/delete.py

@@ -0,0 +1,72 @@
+x = 1
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1
+a, b, c, d = 1, 2, 3, 4
+
+del a, b, c, d
+del a, b, c, d  # Trailing
+
+del a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a
+del a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a  # Trailing
+
+del (
+    a,
+    a
+)
+
+del (
+    # Dangling comment
+)
+
+# Delete something
+del x  # Deleted something
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x,  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+    # Dangling comment
+)  # Completed
+# Done deleting
+
+# NOTE: This shouldn't format. See https://github.com/astral-sh/ruff/issues/5630.
+# Delete something
+del x, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, b, c, d  # Delete these
+# Ready to delete
+
+# Delete something
+del (
+    x,
+    # Deleting this
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+    b,
+    c,
+    d,
+    # Deleted
+)  # Completed
+# Done

crates/ruff_python_formatter/src/statement/stmt_delete.rs

@@ -1,12 +1,48 @@
-use crate::{not_yet_implemented, FormatNodeRule, PyFormatter};
-use ruff_formatter::{write, Buffer, FormatResult};
+use crate::builders::{optional_parentheses, PyFormatterExtensions};
+use crate::comments::dangling_node_comments;
+use crate::expression::parentheses::Parenthesize;
+use crate::{AsFormat, FormatNodeRule, PyFormatter};
+use ruff_formatter::prelude::{block_indent, format_with, space, text};
+use ruff_formatter::{write, Buffer, Format, FormatResult};
 use rustpython_parser::ast::StmtDelete;
 
 #[derive(Default)]
 pub struct FormatStmtDelete;
 
 impl FormatNodeRule<StmtDelete> for FormatStmtDelete {
     fn fmt_fields(&self, item: &StmtDelete, f: &mut PyFormatter) -> FormatResult<()> {
-        write!(f, [not_yet_implemented(item)])
+        let StmtDelete { range: _, targets } = item;
+
+        write!(f, [text("del"), space()])?;
+
+        match targets.as_slice() {
+            [] => {
+                write!(
+                    f,
+                    [
+                        // Handle special case of delete statements without targets.
+                        // ```
+                        // del (
+                        //     # Dangling comment
+                        // )
+                        &text("("),
+                        block_indent(&dangling_node_comments(item)),
+                        &text(")"),
+                    ]
+                )
+            }
+            [single] => {
+                write!(f, [single.format().with_options(Parenthesize::IfBreaks)])
+            }
+            targets => {
+                let item = format_with(|f| f.join_comma_separated().nodes(targets.iter()).finish());
+                optional_parentheses(&item).fmt(f)
+            }
+        }
+    }
+
+    fn fmt_dangling_comments(&self, _node: &StmtDelete, _f: &mut PyFormatter) -> FormatResult<()> {
+        // Handled in `fmt_fields`
+        Ok(())
     }
 }

crates/ruff_python_formatter/tests/snapshots/format@statement__delete.py.snap

@@ -0,0 +1,217 @@
+---
+source: crates/ruff_python_formatter/tests/fixtures.rs
+input_file: crates/ruff_python_formatter/resources/test/fixtures/ruff/statement/delete.py
+---
+## Input
+```py
+x = 1
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1
+a, b, c, d = 1, 2, 3, 4
+
+del a, b, c, d
+del a, b, c, d  # Trailing
+
+del a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a
+del a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a  # Trailing
+
+del (
+    a,
+    a
+)
+
+del (
+    # Dangling comment
+)
+
+# Delete something
+del x  # Deleted something
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x,  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+    # Dangling comment
+)  # Completed
+# Done deleting
+
+# NOTE: This shouldn't format. See https://github.com/astral-sh/ruff/issues/5630.
+# Delete something
+del x, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, b, c, d  # Delete these
+# Ready to delete
+
+# Delete something
+del (
+    x,
+    # Deleting this
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+    b,
+    c,
+    d,
+    # Deleted
+)  # Completed
+# Done
+```
+
+## Output
+```py
+x = 1
+aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1
+a, b, c, d = 1, 2, 3, 4
+
+del a, b, c, d
+del a, b, c, d  # Trailing
+
+del (
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+)
+del (
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+    a,
+)  # Trailing
+
+del (a, a)
+
+del (
+    # Dangling comment
+)
+
+# Delete something
+del x  # Deleted something
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x,  # Deleted something
+    # Finishing deletes
+)  # Completed
+# Done deleting
+
+# Delete something
+del (
+    # Deleting something
+    x  # Deleted something
+    # Finishing deletes
+    # Dangling comment
+)  # Completed
+# Done deleting
+
+# NOTE: This shouldn't format. See https://github.com/astral-sh/ruff/issues/5630.
+# Delete something
+del x, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, b, c, d  # Delete these
+# Ready to delete
+
+# Delete something
+del (
+    x,
+    # Deleting this
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+    b,
+    c,
+    d,
+    # Deleted
+)  # Completed
+# Done
+```
+
+
+