Method fmt

crates/ruff_python_formatter/src/comments/format.rs:37–62

(&self, f: &mut PyFormatter)

impl Format<PyFormatContext<'_>> for FormatLeadingComments<'_> {
    fn fmt(&self, f: &mut PyFormatter) -> FormatResult<()> {
        fn write_leading_comments(
            comments: &[SourceComment],
            f: &mut PyFormatter,
        ) -> FormatResult<()> {
            for comment in comments.iter().filter(|comment| comment.is_unformatted()) {
                let lines_after_comment = lines_after(comment.end(), f.context().source());
                write!(
                    f,
                    [format_comment(comment), empty_lines(lines_after_comment)]
                )?;

                comment.mark_formatted();
            }

            Ok(())
        }

        match self {
            FormatLeadingComments::Node(node) => {
                let comments = f.context().comments().clone();
                write_leading_comments(comments.leading(*node), f)
            }
            FormatLeadingComments::Comments(comments) => write_leading_comments(comments, f),
        }
    }
}

/// Formats the leading `comments` of an alternate branch and ensures that it preserves the right