Formatter and parser refactoring (#7569)

I got confused and refactored a bit, now the naming should be more
consistent. This is the basis for the range formatting work.

Chages:
* `format_module` -> `format_module_source` (format a string)
* `format_node` -> `format_module_ast` (format a program parsed into an
AST)
* Added `parse_ok_tokens` that takes `Token` instead of `Result<Token>`
* Call the source code `source` consistently
* Added a `tokens_and_ranges` helper
* `python_ast` -> `module` (because that's the type)

crates/ruff_benchmark/benches/formatter.rs

@@ -4,7 +4,7 @@ use ruff_benchmark::criterion::{
     criterion_group, criterion_main, BenchmarkId, Criterion, Throughput,
 };
 use ruff_benchmark::{TestCase, TestFile, TestFileDownloadError};
-use ruff_python_formatter::{format_node, PyFormatOptions};
+use ruff_python_formatter::{format_module_ast, PyFormatOptions};
 use ruff_python_index::CommentRangesBuilder;
 use ruff_python_parser::lexer::lex;
 use ruff_python_parser::{parse_tokens, Mode};
@@ -65,12 +65,13 @@ fn benchmark_formatter(criterion: &mut Criterion) {
                 let comment_ranges = comment_ranges.finish();
 
                 // Parse the AST.
-                let python_ast = parse_tokens(tokens, Mode::Module, "<filename>")
+                let module = parse_tokens(tokens, Mode::Module, "<filename>")
                     .expect("Input to be a valid python program");
 
                 b.iter(|| {
                     let options = PyFormatOptions::from_extension(Path::new(case.name()));
-                    let formatted = format_node(&python_ast, &comment_ranges, case.code(), options)
+                    let formatted =
+                        format_module_ast(&module, &comment_ranges, case.code(), options)
                             .expect("Formatting to succeed");
 
                     formatted.print().expect("Printing to succeed")

crates/ruff_cli/src/commands/format.rs

@@ -15,7 +15,7 @@ use ruff_linter::fs;
 use ruff_linter::logging::LogLevel;
 use ruff_linter::warn_user_once;
 use ruff_python_ast::{PySourceType, SourceType};
-use ruff_python_formatter::{format_module, FormatModuleError};
+use ruff_python_formatter::{format_module_source, FormatModuleError};
 use ruff_workspace::resolver::python_files_in_path;
 use ruff_workspace::FormatterSettings;
 
@@ -151,7 +151,7 @@ fn format_path(
     let options = settings.to_format_options(source_type, &unformatted);
     debug!("Formatting {} with {:?}", path.display(), options);
 
-    let formatted = format_module(&unformatted, options)
+    let formatted = format_module_source(&unformatted, options)
         .map_err(|err| FormatCommandError::FormatModule(Some(path.to_path_buf()), err))?;
 
     let formatted = formatted.as_code();

crates/ruff_cli/src/commands/format_stdin.rs

@@ -5,7 +5,7 @@ use anyhow::Result;
 use log::warn;
 
 use ruff_python_ast::PySourceType;
-use ruff_python_formatter::format_module;
+use ruff_python_formatter::format_module_source;
 use ruff_workspace::resolver::python_file_at_path;
 use ruff_workspace::FormatterSettings;
 
@@ -70,7 +70,7 @@ fn format_source(
         &unformatted,
     );
 
-    let formatted = format_module(&unformatted, options)
+    let formatted = format_module_source(&unformatted, options)
         .map_err(|err| FormatCommandError::FormatModule(path.map(Path::to_path_buf), err))?;
     let formatted = formatted.as_code();
 

crates/ruff_dev/src/format_dev.rs

@@ -34,7 +34,7 @@ use ruff_formatter::{FormatError, LineWidth, PrintError};
 use ruff_linter::logging::LogLevel;
 use ruff_linter::settings::types::{FilePattern, FilePatternSet};
 use ruff_python_formatter::{
-    format_module, FormatModuleError, MagicTrailingComma, PyFormatOptions,
+    format_module_source, FormatModuleError, MagicTrailingComma, PyFormatOptions,
 };
 use ruff_workspace::resolver::{python_files_in_path, PyprojectConfig, Resolver};
 
@@ -799,7 +799,7 @@ fn format_dev_file(
     let content = fs::read_to_string(input_path)?;
     #[cfg(not(debug_assertions))]
     let start = Instant::now();
-    let printed = match format_module(&content, options.clone()) {
+    let printed = match format_module_source(&content, options.clone()) {
         Ok(printed) => printed,
         Err(err @ (FormatModuleError::LexError(_) | FormatModuleError::ParseError(_))) => {
             return Err(CheckFileError::SyntaxErrorInInput(err));
@@ -826,7 +826,7 @@ fn format_dev_file(
     }
 
     if stability_check {
-        let reformatted = match format_module(formatted, options) {
+        let reformatted = match format_module_source(formatted, options) {
             Ok(reformatted) => reformatted,
             Err(err @ (FormatModuleError::LexError(_) | FormatModuleError::ParseError(_))) => {
                 return Err(CheckFileError::SyntaxErrorInOutput {

crates/ruff_python_formatter/src/cli.rs

@@ -2,17 +2,16 @@
 
 use std::path::{Path, PathBuf};
 
-use anyhow::{bail, Context, Result};
+use anyhow::{format_err, Context, Result};
 use clap::{command, Parser, ValueEnum};
 
 use ruff_formatter::SourceCode;
-use ruff_python_index::CommentRangesBuilder;
-use ruff_python_parser::lexer::lex;
-use ruff_python_parser::{parse_tokens, Mode};
+use ruff_python_index::tokens_and_ranges;
+use ruff_python_parser::{parse_ok_tokens, Mode};
 use ruff_text_size::Ranged;
 
 use crate::comments::collect_comments;
-use crate::{format_node, PyFormatOptions};
+use crate::{format_module_ast, PyFormatOptions};
 
 #[derive(ValueEnum, Clone, Debug)]
 pub enum Emit {
@@ -39,36 +38,25 @@ pub struct Cli {
     pub print_comments: bool,
 }
 
-pub fn format_and_debug_print(input: &str, cli: &Cli, source_type: &Path) -> Result<String> {
-    let mut tokens = Vec::new();
-    let mut comment_ranges = CommentRangesBuilder::default();
-
-    for result in lex(input, Mode::Module) {
-        let (token, range) = match result {
-            Ok((token, range)) => (token, range),
-            Err(err) => bail!("Source contains syntax errors {err:?}"),
-        };
-
-        comment_ranges.visit_token(&token, range);
-        tokens.push(Ok((token, range)));
-    }
-
-    let comment_ranges = comment_ranges.finish();
+pub fn format_and_debug_print(source: &str, cli: &Cli, source_type: &Path) -> Result<String> {
+    let (tokens, comment_ranges) = tokens_and_ranges(source)
+        .map_err(|err| format_err!("Source contains syntax errors {err:?}"))?;
 
     // Parse the AST.
-    let python_ast =
-        parse_tokens(tokens, Mode::Module, "<filename>").context("Syntax error in input")?;
+    let module =
+        parse_ok_tokens(tokens, Mode::Module, "<filename>").context("Syntax error in input")?;
 
     let options = PyFormatOptions::from_extension(source_type);
-    let formatted = format_node(&python_ast, &comment_ranges, input, options)
+
+    let source_code = SourceCode::new(source);
+    let formatted = format_module_ast(&module, &comment_ranges, source, options)
         .context("Failed to format node")?;
     if cli.print_ir {
-        println!("{}", formatted.document().display(SourceCode::new(input)));
+        println!("{}", formatted.document().display(source_code));
     }
     if cli.print_comments {
         // Print preceding, following and enclosing nodes
-        let source_code = SourceCode::new(input);
-        let decorated_comments = collect_comments(&python_ast, source_code, &comment_ranges);
+        let decorated_comments = collect_comments(&module, source_code, &comment_ranges);
         if !decorated_comments.is_empty() {
             println!("# Comment decoration: Range, Preceding, Following, Enclosing, Comment");
         }
@@ -86,13 +74,10 @@ pub fn format_and_debug_print(input: &str, cli: &Cli, source_type: &Path) -> Res
                     comment.enclosing_node().kind(),
                     comment.enclosing_node().range()
                 ),
-                comment.slice().text(SourceCode::new(input)),
+                comment.slice().text(source_code),
             );
         }
-        println!(
-            "{:#?}",
-            formatted.context().comments().debug(SourceCode::new(input))
-        );
+        println!("{:#?}", formatted.context().comments().debug(source_code));
     }
     Ok(formatted
         .print()

crates/ruff_python_formatter/src/comments/mod.rs

@@ -549,9 +549,9 @@ mod tests {
 
     use ruff_formatter::SourceCode;
     use ruff_python_ast::Mod;
-    use ruff_python_index::CommentRangesBuilder;
-    use ruff_python_parser::lexer::lex;
-    use ruff_python_parser::{parse_tokens, Mode};
+    use ruff_python_index::tokens_and_ranges;
+
+    use ruff_python_parser::{parse_ok_tokens, Mode};
     use ruff_python_trivia::CommentRanges;
 
     use crate::comments::Comments;
@@ -563,19 +563,11 @@ mod tests {
     }
 
     impl<'a> CommentsTestCase<'a> {
-        fn from_code(code: &'a str) -> Self {
-            let source_code = SourceCode::new(code);
-            let tokens: Vec<_> = lex(code, Mode::Module).collect();
-
-            let mut comment_ranges = CommentRangesBuilder::default();
-
-            for (token, range) in tokens.iter().flatten() {
-                comment_ranges.visit_token(token, *range);
-            }
-
-            let comment_ranges = comment_ranges.finish();
-
-            let parsed = parse_tokens(tokens, Mode::Module, "test.py")
+        fn from_code(source: &'a str) -> Self {
+            let source_code = SourceCode::new(source);
+            let (tokens, comment_ranges) =
+                tokens_and_ranges(source).expect("Expect source to be valid Python");
+            let parsed = parse_ok_tokens(tokens, Mode::Module, "test.py")
                 .expect("Expect source to be valid Python");
 
             CommentsTestCase {

crates/ruff_python_formatter/src/lib.rs

@@ -5,9 +5,9 @@ use ruff_formatter::prelude::*;
 use ruff_formatter::{format, FormatError, Formatted, PrintError, Printed, SourceCode};
 use ruff_python_ast::node::AstNode;
 use ruff_python_ast::Mod;
-use ruff_python_index::CommentRangesBuilder;
-use ruff_python_parser::lexer::{lex, LexicalError};
-use ruff_python_parser::{parse_tokens, Mode, ParseError};
+use ruff_python_index::tokens_and_ranges;
+use ruff_python_parser::lexer::LexicalError;
+use ruff_python_parser::{parse_ok_tokens, Mode, ParseError};
 use ruff_python_trivia::CommentRanges;
 use ruff_source_file::Locator;
 
@@ -121,61 +121,44 @@ impl From<ParseError> for FormatModuleError {
     }
 }
 
-#[tracing::instrument(level = Level::TRACE, skip_all)]
-pub fn format_module(
-    contents: &str,
+#[tracing::instrument(name = "format", level = Level::TRACE, skip_all)]
+pub fn format_module_source(
+    source: &str,
     options: PyFormatOptions,
 ) -> Result<Printed, FormatModuleError> {
-    // Tokenize once
-    let mut tokens = Vec::new();
-    let mut comment_ranges = CommentRangesBuilder::default();
-
-    for result in lex(contents, Mode::Module) {
-        let (token, range) = result?;
-
-        comment_ranges.visit_token(&token, range);
-        tokens.push(Ok((token, range)));
-    }
-
-    let comment_ranges = comment_ranges.finish();
-
-    // Parse the AST.
-    let python_ast = parse_tokens(tokens, Mode::Module, "<filename>")?;
-
-    let formatted = format_node(&python_ast, &comment_ranges, contents, options)?;
-
+    let (tokens, comment_ranges) = tokens_and_ranges(source)?;
+    let module = parse_ok_tokens(tokens, Mode::Module, "<filename>")?;
+    let formatted = format_module_ast(&module, &comment_ranges, source, options)?;
     Ok(formatted.print()?)
 }
 
-pub fn format_node<'a>(
-    root: &'a Mod,
+pub fn format_module_ast<'a>(
+    module: &'a Mod,
     comment_ranges: &'a CommentRanges,
     source: &'a str,
     options: PyFormatOptions,
 ) -> FormatResult<Formatted<PyFormatContext<'a>>> {
-    let comments = Comments::from_ast(root, SourceCode::new(source), comment_ranges);
-
+    let source_code = SourceCode::new(source);
+    let comments = Comments::from_ast(module, source_code, comment_ranges);
     let locator = Locator::new(source);
 
     let formatted = format!(
         PyFormatContext::new(options, locator.contents(), comments),
-        [root.format()]
+        [module.format()]
     )?;
     formatted
         .context()
         .comments()
-        .assert_all_formatted(SourceCode::new(source));
+        .assert_all_formatted(source_code);
     Ok(formatted)
 }
 
 /// Public function for generating a printable string of the debug comments.
-pub fn pretty_comments(root: &Mod, comment_ranges: &CommentRanges, source: &str) -> String {
-    let comments = Comments::from_ast(root, SourceCode::new(source), comment_ranges);
+pub fn pretty_comments(module: &Mod, comment_ranges: &CommentRanges, source: &str) -> String {
+    let source_code = SourceCode::new(source);
+    let comments = Comments::from_ast(module, source_code, comment_ranges);
 
-    std::format!(
-        "{comments:#?}",
-        comments = comments.debug(SourceCode::new(source))
-    )
+    std::format!("{comments:#?}", comments = comments.debug(source_code))
 }
 
 #[cfg(test)]
@@ -185,11 +168,11 @@ mod tests {
     use anyhow::Result;
     use insta::assert_snapshot;
 
-    use ruff_python_index::CommentRangesBuilder;
-    use ruff_python_parser::lexer::lex;
-    use ruff_python_parser::{parse_tokens, Mode};
+    use ruff_python_index::tokens_and_ranges;
 
-    use crate::{format_module, format_node, PyFormatOptions};
+    use ruff_python_parser::{parse_ok_tokens, Mode};
+
+    use crate::{format_module_ast, format_module_source, PyFormatOptions};
 
     /// Very basic test intentionally kept very similar to the CLI
     #[test]
@@ -205,7 +188,7 @@ if True:
     pass
 # trailing
 "#;
-        let actual = format_module(input, PyFormatOptions::default())?
+        let actual = format_module_source(input, PyFormatOptions::default())?
             .as_code()
             .to_string();
         assert_eq!(expected, actual);
@@ -216,7 +199,7 @@ if True:
     #[ignore]
     #[test]
     fn quick_test() {
-        let src = r#"
+        let source = r#"
 def main() -> None:
     if True:
         some_very_long_variable_name_abcdefghijk = Foo()
@@ -226,23 +209,13 @@ def main() -> None:
         ]
 
 "#;
-        // Tokenize once
-        let mut tokens = Vec::new();
-        let mut comment_ranges = CommentRangesBuilder::default();
-
-        for result in lex(src, Mode::Module) {
-            let (token, range) = result.unwrap();
-            comment_ranges.visit_token(&token, range);
-            tokens.push(Ok((token, range)));
-        }
-
-        let comment_ranges = comment_ranges.finish();
+        let (tokens, comment_ranges) = tokens_and_ranges(source).unwrap();
 
         // Parse the AST.
         let source_path = "code_inline.py";
-        let python_ast = parse_tokens(tokens, Mode::Module, source_path).unwrap();
+        let module = parse_ok_tokens(tokens, Mode::Module, source_path).unwrap();
         let options = PyFormatOptions::from_extension(Path::new(source_path));
-        let formatted = format_node(&python_ast, &comment_ranges, src, options).unwrap();
+        let formatted = format_module_ast(&module, &comment_ranges, source, options).unwrap();
 
         // Uncomment the `dbg` to print the IR.
         // Use `dbg_write!(f, []) instead of `write!(f, [])` in your formatting code to print some IR

crates/ruff_python_formatter/src/main.rs

@@ -25,11 +25,11 @@ fn main() -> Result<()> {
                 cli.emit
             );
         }
-        let input = read_from_stdin()?;
+        let source = read_from_stdin()?;
         // It seems reasonable to give this a dummy name
-        let formatted = format_and_debug_print(&input, &cli, Path::new("stdin.py"))?;
+        let formatted = format_and_debug_print(&source, &cli, Path::new("stdin.py"))?;
         if cli.check {
-            if formatted == input {
+            if formatted == source {
                 return Ok(());
             }
             bail!("Content not correctly formatted")
@@ -37,9 +37,9 @@ fn main() -> Result<()> {
         stdout().lock().write_all(formatted.as_bytes())?;
     } else {
         for file in &cli.files {
-            let input = fs::read_to_string(file)
+            let source = fs::read_to_string(file)
                 .with_context(|| format!("Could not read {}: ", file.display()))?;
-            let formatted = format_and_debug_print(&input, &cli, file)?;
+            let formatted = format_and_debug_print(&source, &cli, file)?;
             match cli.emit {
                 Some(Emit::Stdout) => stdout().lock().write_all(formatted.as_bytes())?,
                 None | Some(Emit::Files) => {

crates/ruff_python_formatter/tests/fixtures.rs

@@ -1,5 +1,5 @@
 use ruff_formatter::FormatOptions;
-use ruff_python_formatter::{format_module, PyFormatOptions};
+use ruff_python_formatter::{format_module_source, PyFormatOptions};
 use similar::TextDiff;
 use std::fmt::{Formatter, Write};
 use std::io::BufReader;
@@ -20,7 +20,7 @@ fn black_compatibility() {
             PyFormatOptions::from_extension(input_path)
         };
 
-        let printed = format_module(&content, options.clone()).unwrap_or_else(|err| {
+        let printed = format_module_source(&content, options.clone()).unwrap_or_else(|err| {
             panic!(
                 "Formatting of {} to succeed but encountered error {err}",
                 input_path.display()
@@ -107,7 +107,8 @@ fn format() {
         let content = fs::read_to_string(input_path).unwrap();
 
         let options = PyFormatOptions::from_extension(input_path);
-        let printed = format_module(&content, options.clone()).expect("Formatting to succeed");
+        let printed =
+            format_module_source(&content, options.clone()).expect("Formatting to succeed");
         let formatted_code = printed.as_code();
 
         ensure_stability_when_formatting_twice(formatted_code, options.clone(), input_path);
@@ -124,7 +125,7 @@ fn format() {
 
             for (i, options) in options.into_iter().enumerate() {
                 let printed =
-                    format_module(&content, options.clone()).expect("Formatting to succeed");
+                    format_module_source(&content, options.clone()).expect("Formatting to succeed");
                 let formatted_code = printed.as_code();
 
                 ensure_stability_when_formatting_twice(formatted_code, options.clone(), input_path);
@@ -139,7 +140,8 @@ fn format() {
                 .unwrap();
             }
         } else {
-            let printed = format_module(&content, options.clone()).expect("Formatting to succeed");
+            let printed =
+                format_module_source(&content, options.clone()).expect("Formatting to succeed");
             let formatted_code = printed.as_code();
 
             ensure_stability_when_formatting_twice(formatted_code, options, input_path);
@@ -174,7 +176,7 @@ fn ensure_stability_when_formatting_twice(
     options: PyFormatOptions,
     input_path: &Path,
 ) {
-    let reformatted = match format_module(formatted_code, options) {
+    let reformatted = match format_module_source(formatted_code, options) {
         Ok(reformatted) => reformatted,
         Err(err) => {
             panic!(

crates/ruff_python_index/src/comment_ranges.rs

@@ -1,6 +1,7 @@
 use std::fmt::Debug;
 
-use ruff_python_parser::Tok;
+use ruff_python_parser::lexer::{lex, LexicalError};
+use ruff_python_parser::{Mode, Tok};
 use ruff_python_trivia::CommentRanges;
 use ruff_text_size::TextRange;
 
@@ -20,3 +21,21 @@ impl CommentRangesBuilder {
         CommentRanges::new(self.ranges)
     }
 }
+
+/// Helper method to lex and extract comment ranges
+pub fn tokens_and_ranges(
+    source: &str,
+) -> Result<(Vec<(Tok, TextRange)>, CommentRanges), LexicalError> {
+    let mut tokens = Vec::new();
+    let mut comment_ranges = CommentRangesBuilder::default();
+
+    for result in lex(source, Mode::Module) {
+        let (token, range) = result?;
+
+        comment_ranges.visit_token(&token, range);
+        tokens.push((token, range));
+    }
+
+    let comment_ranges = comment_ranges.finish();
+    Ok((tokens, comment_ranges))
+}

crates/ruff_python_index/src/lib.rs

@@ -1,5 +1,5 @@
 mod comment_ranges;
 mod indexer;
 
-pub use comment_ranges::CommentRangesBuilder;
+pub use comment_ranges::{tokens_and_ranges, CommentRangesBuilder};
 pub use indexer::Indexer;

crates/ruff_python_parser/src/lib.rs

@@ -110,8 +110,8 @@
 //! [lexer]: crate::lexer
 
 pub use parser::{
-    parse, parse_expression, parse_expression_starts_at, parse_program, parse_starts_at,
-    parse_suite, parse_tokens, ParseError, ParseErrorType,
+    parse, parse_expression, parse_expression_starts_at, parse_ok_tokens, parse_program,
+    parse_starts_at, parse_suite, parse_tokens, ParseError, ParseErrorType,
 };
 use ruff_python_ast::{CmpOp, Expr, Mod, PySourceType, Suite};
 use ruff_text_size::{Ranged, TextRange, TextSize};

crates/ruff_python_parser/src/parser.rs

@@ -18,7 +18,7 @@ use itertools::Itertools;
 pub(super) use lalrpop_util::ParseError as LalrpopError;
 use ruff_text_size::{TextRange, TextSize};
 
-use crate::lexer::{lex, lex_starts_at};
+use crate::lexer::{lex, lex_starts_at, Spanned};
 use crate::{
     lexer::{self, LexResult, LexicalError, LexicalErrorType},
     python,
@@ -159,7 +159,7 @@ pub fn parse_expression_starts_at(
 /// let program = parse(source, Mode::Ipython, "<embedded>");
 /// assert!(program.is_ok());
 /// ```
-pub fn parse(source: &str, mode: Mode, source_path: &str) -> Result<ast::Mod, ParseError> {
+pub fn parse(source: &str, mode: Mode, source_path: &str) -> Result<Mod, ParseError> {
     parse_starts_at(source, mode, source_path, TextSize::default())
 }
 
@@ -191,7 +191,7 @@ pub fn parse_starts_at(
     mode: Mode,
     source_path: &str,
     offset: TextSize,
-) -> Result<ast::Mod, ParseError> {
+) -> Result<Mod, ParseError> {
     let lxr = lexer::lex_starts_at(source, mode, offset);
     parse_tokens(lxr, mode, source_path)
 }
@@ -215,7 +215,7 @@ pub fn parse_tokens(
     lxr: impl IntoIterator<Item = LexResult>,
     mode: Mode,
     source_path: &str,
-) -> Result<ast::Mod, ParseError> {
+) -> Result<Mod, ParseError> {
     let lxr = lxr.into_iter();
 
     parse_filtered_tokens(
@@ -225,19 +225,35 @@ pub fn parse_tokens(
     )
 }
 
+/// Parse tokens into an AST like [`parse_tokens`], but we already know all tokens are valid.
+pub fn parse_ok_tokens(
+    lxr: impl IntoIterator<Item = Spanned>,
+    mode: Mode,
+    source_path: &str,
+) -> Result<Mod, ParseError> {
+    let lxr = lxr
+        .into_iter()
+        .filter(|(tok, _)| !matches!(tok, Tok::Comment { .. } | Tok::NonLogicalNewline));
+    let marker_token = (Tok::start_marker(mode), TextRange::default());
+    let lexer = iter::once(marker_token)
+        .chain(lxr)
+        .map(|(t, range)| (range.start(), t, range.end()));
+    python::TopParser::new()
+        .parse(mode, lexer)
+        .map_err(|e| parse_error_from_lalrpop(e, source_path))
+}
+
 fn parse_filtered_tokens(
     lxr: impl IntoIterator<Item = LexResult>,
     mode: Mode,
     source_path: &str,
-) -> Result<ast::Mod, ParseError> {
+) -> Result<Mod, ParseError> {
     let marker_token = (Tok::start_marker(mode), TextRange::default());
     let lexer = iter::once(Ok(marker_token)).chain(lxr);
     python::TopParser::new()
         .parse(
             mode,
-            lexer
-                .into_iter()
-                .map_ok(|(t, range)| (range.start(), t, range.end())),
+            lexer.map_ok(|(t, range)| (range.start(), t, range.end())),
         )
         .map_err(|e| parse_error_from_lalrpop(e, source_path))
 }

crates/ruff_wasm/src/lib.rs

@@ -14,7 +14,7 @@ use ruff_linter::settings::{flags, DUMMY_VARIABLE_RGX, PREFIXES};
 use ruff_linter::source_kind::SourceKind;
 use ruff_python_ast::{Mod, PySourceType};
 use ruff_python_codegen::Stylist;
-use ruff_python_formatter::{format_node, pretty_comments, PyFormatContext};
+use ruff_python_formatter::{format_module_ast, pretty_comments, PyFormatContext};
 use ruff_python_index::{CommentRangesBuilder, Indexer};
 use ruff_python_parser::lexer::LexResult;
 use ruff_python_parser::{parse_tokens, AsMode, Mode};
@@ -305,7 +305,7 @@ impl<'a> ParsedModule<'a> {
             .formatter
             .to_format_options(PySourceType::default(), self.source_code);
 
-        format_node(
+        format_module_ast(
             &self.module,
             &self.comment_ranges,
             self.source_code,