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[syntax-errors] Start detecting compile-time syntax errors (#16106)
## Summary This PR implements the "greeter" approach for checking the AST for syntax errors emitted by the CPython compiler. It introduces two main infrastructural changes to support all of the compile-time errors: 1. Adds a new `semantic_errors` module to the parser crate with public `SemanticSyntaxChecker` and `SemanticSyntaxError` types 2. Embeds a `SemanticSyntaxChecker` in the `ruff_linter::Checker` for checking these errors in ruff As a proof of concept, it also implements detection of two syntax errors: 1. A reimplementation of [`late-future-import`](https://docs.astral.sh/ruff/rules/late-future-import/) (`F404`) 2. Detection of rebound comprehension iteration variables (https://github.com/astral-sh/ruff/issues/14395) ## Test plan Existing F404 tests, new inline tests in the `ruff_python_parser` crate, and a linter CLI test showing an example of the `Message` output. I also tested in VS Code, where `preview = false` and turning off syntax errors both disable the new errors:  And on the playground, where `preview = false` also disables the errors:  Fixes #14395 --------- Co-authored-by: Micha Reiser <micha@reiser.io>
This commit is contained in:
parent
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commit
2baaedda6c
17 changed files with 1601 additions and 93 deletions
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@ -1,3 +1,4 @@
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use std::cell::RefCell;
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use std::cmp::Ordering;
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use std::fmt::{Formatter, Write};
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use std::fs;
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@ -5,7 +6,11 @@ use std::path::Path;
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use ruff_annotate_snippets::{Level, Renderer, Snippet};
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use ruff_python_ast::visitor::source_order::{walk_module, SourceOrderVisitor, TraversalSignal};
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use ruff_python_ast::visitor::Visitor;
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use ruff_python_ast::{AnyNodeRef, Mod, PythonVersion};
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use ruff_python_parser::semantic_errors::{
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SemanticSyntaxCheckerVisitor, SemanticSyntaxContext, SemanticSyntaxError,
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};
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use ruff_python_parser::{parse_unchecked, Mode, ParseErrorType, ParseOptions, Token};
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use ruff_source_file::{LineIndex, OneIndexed, SourceCode};
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use ruff_text_size::{Ranged, TextLen, TextRange, TextSize};
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@ -81,6 +86,38 @@ fn test_valid_syntax(input_path: &Path) {
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writeln!(&mut output, "## AST").unwrap();
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writeln!(&mut output, "\n```\n{:#?}\n```", parsed.syntax()).unwrap();
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let parsed = parsed.try_into_module().expect("Parsed with Mode::Module");
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let mut visitor = SemanticSyntaxCheckerVisitor::new(TestContext::default());
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for stmt in parsed.suite() {
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visitor.visit_stmt(stmt);
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}
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let semantic_syntax_errors = visitor.into_context().diagnostics.into_inner();
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if !semantic_syntax_errors.is_empty() {
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let mut message = "Expected no semantic syntax errors for a valid program:\n".to_string();
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let line_index = LineIndex::from_source_text(&source);
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let source_code = SourceCode::new(&source, &line_index);
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for error in semantic_syntax_errors {
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writeln!(
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&mut message,
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"{}\n",
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CodeFrame {
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range: error.range,
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error: &ParseErrorType::OtherError(error.to_string()),
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source_code: &source_code,
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}
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)
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.unwrap();
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}
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panic!("{input_path:?}: {message}");
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}
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insta::with_settings!({
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omit_expression => true,
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input_file => input_path,
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@ -99,11 +136,6 @@ fn test_invalid_syntax(input_path: &Path) {
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});
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let parsed = parse_unchecked(&source, options);
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assert!(
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parsed.has_syntax_errors(),
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"{input_path:?}: Expected parser to generate at least one syntax error for a program containing syntax errors."
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);
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validate_tokens(parsed.tokens(), source.text_len(), input_path);
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validate_ast(parsed.syntax(), source.text_len(), input_path);
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@ -148,6 +180,38 @@ fn test_invalid_syntax(input_path: &Path) {
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.unwrap();
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}
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let parsed = parsed.try_into_module().expect("Parsed with Mode::Module");
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let mut visitor = SemanticSyntaxCheckerVisitor::new(TestContext::default());
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for stmt in parsed.suite() {
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visitor.visit_stmt(stmt);
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}
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let semantic_syntax_errors = visitor.into_context().diagnostics.into_inner();
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assert!(
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parsed.has_syntax_errors() || !semantic_syntax_errors.is_empty(),
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"{input_path:?}: Expected parser to generate at least one syntax error for a program containing syntax errors."
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);
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if !semantic_syntax_errors.is_empty() {
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writeln!(&mut output, "## Semantic Syntax Errors\n").unwrap();
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}
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for error in semantic_syntax_errors {
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writeln!(
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&mut output,
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"{}\n",
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CodeFrame {
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range: error.range,
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error: &ParseErrorType::OtherError(error.to_string()),
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source_code: &source_code,
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}
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)
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.unwrap();
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}
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insta::with_settings!({
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omit_expression => true,
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input_file => input_path,
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@ -393,3 +457,22 @@ impl<'ast> SourceOrderVisitor<'ast> for ValidateAstVisitor<'ast> {
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self.previous = Some(node);
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}
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}
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#[derive(Debug, Default)]
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struct TestContext {
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diagnostics: RefCell<Vec<SemanticSyntaxError>>,
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}
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impl SemanticSyntaxContext for TestContext {
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fn seen_docstring_boundary(&self) -> bool {
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false
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}
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fn python_version(&self) -> PythonVersion {
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PythonVersion::default()
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}
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fn report_semantic_error(&self, error: SemanticSyntaxError) {
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self.diagnostics.borrow_mut().push(error);
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}
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}
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@ -22,7 +22,7 @@ fn project_root() -> PathBuf {
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#[test]
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fn generate_inline_tests() -> Result<()> {
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let parser_dir = project_root().join("crates/ruff_python_parser/src/parser");
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let parser_dir = project_root().join("crates/ruff_python_parser/src/");
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let tests = TestCollection::try_from(parser_dir.as_path())?;
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let mut test_files = TestFiles::default();
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@ -0,0 +1,903 @@
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---
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source: crates/ruff_python_parser/tests/fixtures.rs
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input_file: crates/ruff_python_parser/resources/inline/err/rebound_comprehension_variable.py
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---
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## AST
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```
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Module(
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ModModule {
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range: 0..342,
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body: [
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Expr(
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StmtExpr {
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range: 0..28,
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value: ListComp(
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ExprListComp {
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range: 0..28,
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elt: Named(
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ExprNamed {
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range: 2..8,
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target: Name(
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ExprName {
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range: 2..3,
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id: Name("a"),
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ctx: Store,
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},
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),
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value: NumberLiteral(
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ExprNumberLiteral {
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range: 7..8,
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value: Int(
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0,
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),
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},
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),
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},
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),
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generators: [
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Comprehension {
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range: 10..27,
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target: Name(
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ExprName {
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range: 14..15,
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id: Name("a"),
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ctx: Store,
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},
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),
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iter: Call(
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ExprCall {
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range: 19..27,
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func: Name(
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ExprName {
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range: 19..24,
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id: Name("range"),
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ctx: Load,
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},
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),
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arguments: Arguments {
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range: 24..27,
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args: [
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NumberLiteral(
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ExprNumberLiteral {
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range: 25..26,
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value: Int(
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0,
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),
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},
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),
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],
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keywords: [],
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},
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},
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),
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ifs: [],
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is_async: false,
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},
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],
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},
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),
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},
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),
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Expr(
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StmtExpr {
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range: 29..57,
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value: SetComp(
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ExprSetComp {
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range: 29..57,
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elt: Named(
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ExprNamed {
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range: 31..37,
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target: Name(
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ExprName {
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range: 31..32,
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id: Name("a"),
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ctx: Store,
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},
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),
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value: NumberLiteral(
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ExprNumberLiteral {
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range: 36..37,
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value: Int(
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0,
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||||
),
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},
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),
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},
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),
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generators: [
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Comprehension {
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range: 39..56,
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target: Name(
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ExprName {
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range: 43..44,
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id: Name("a"),
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ctx: Store,
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||||
},
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),
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iter: Call(
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ExprCall {
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range: 48..56,
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||||
func: Name(
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ExprName {
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range: 48..53,
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id: Name("range"),
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ctx: Load,
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},
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),
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arguments: Arguments {
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range: 53..56,
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args: [
|
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NumberLiteral(
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ExprNumberLiteral {
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range: 54..55,
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value: Int(
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0,
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),
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},
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),
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],
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keywords: [],
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},
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},
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),
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ifs: [],
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is_async: false,
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},
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],
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},
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),
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},
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),
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Expr(
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StmtExpr {
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range: 58..91,
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value: DictComp(
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ExprDictComp {
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range: 58..91,
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||||
key: Named(
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ExprNamed {
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range: 60..66,
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||||
target: Name(
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||||
ExprName {
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||||
range: 60..61,
|
||||
id: Name("a"),
|
||||
ctx: Store,
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||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 65..66,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
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||||
),
|
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value: Name(
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ExprName {
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||||
range: 69..72,
|
||||
id: Name("val"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
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generators: [
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||||
Comprehension {
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||||
range: 73..90,
|
||||
target: Name(
|
||||
ExprName {
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||||
range: 77..78,
|
||||
id: Name("a"),
|
||||
ctx: Store,
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||||
},
|
||||
),
|
||||
iter: Call(
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ExprCall {
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||||
range: 82..90,
|
||||
func: Name(
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ExprName {
|
||||
range: 82..87,
|
||||
id: Name("range"),
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||||
ctx: Load,
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||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 87..90,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 88..89,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
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keywords: [],
|
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},
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},
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),
|
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ifs: [],
|
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is_async: false,
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},
|
||||
],
|
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},
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),
|
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},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 92..125,
|
||||
value: DictComp(
|
||||
ExprDictComp {
|
||||
range: 92..125,
|
||||
key: Name(
|
||||
ExprName {
|
||||
range: 93..96,
|
||||
id: Name("key"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
value: Named(
|
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ExprNamed {
|
||||
range: 99..105,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 99..100,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 104..105,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
generators: [
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Comprehension {
|
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range: 107..124,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 111..112,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
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ExprCall {
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||||
range: 116..124,
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||||
func: Name(
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ExprName {
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||||
range: 116..121,
|
||||
id: Name("range"),
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||||
ctx: Load,
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||||
},
|
||||
),
|
||||
arguments: Arguments {
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||||
range: 121..124,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 122..123,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
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||||
StmtExpr {
|
||||
range: 126..154,
|
||||
value: Generator(
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||||
ExprGenerator {
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||||
range: 126..154,
|
||||
elt: Named(
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ExprNamed {
|
||||
range: 128..134,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 128..129,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 133..134,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
generators: [
|
||||
Comprehension {
|
||||
range: 136..153,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 140..141,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 145..153,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 145..150,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 150..153,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 151..152,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
],
|
||||
parenthesized: true,
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 155..185,
|
||||
value: ListComp(
|
||||
ExprListComp {
|
||||
range: 155..185,
|
||||
elt: List(
|
||||
ExprList {
|
||||
range: 156..166,
|
||||
elts: [
|
||||
Named(
|
||||
ExprNamed {
|
||||
range: 158..164,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 158..159,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 163..164,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
generators: [
|
||||
Comprehension {
|
||||
range: 167..184,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 171..172,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 176..184,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 176..181,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
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||||
range: 181..184,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 182..183,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 186..233,
|
||||
value: ListComp(
|
||||
ExprListComp {
|
||||
range: 186..233,
|
||||
elt: Named(
|
||||
ExprNamed {
|
||||
range: 188..194,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 188..189,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 193..194,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
generators: [
|
||||
Comprehension {
|
||||
range: 196..214,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 200..201,
|
||||
id: Name("b"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 205..214,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 205..210,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 211..214,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 212..213,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
Comprehension {
|
||||
range: 215..232,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 219..220,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 224..232,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 224..229,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 229..232,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 230..231,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 234..281,
|
||||
value: ListComp(
|
||||
ExprListComp {
|
||||
range: 234..281,
|
||||
elt: Named(
|
||||
ExprNamed {
|
||||
range: 236..242,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 236..237,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 241..242,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
generators: [
|
||||
Comprehension {
|
||||
range: 244..262,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 248..249,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 253..262,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 253..258,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 259..262,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 260..261,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
Comprehension {
|
||||
range: 263..280,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 267..268,
|
||||
id: Name("b"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 272..280,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 272..277,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 277..280,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 278..279,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 282..341,
|
||||
value: ListComp(
|
||||
ExprListComp {
|
||||
range: 282..341,
|
||||
elt: Tuple(
|
||||
ExprTuple {
|
||||
range: 283..303,
|
||||
elts: [
|
||||
Named(
|
||||
ExprNamed {
|
||||
range: 285..291,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 285..286,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 290..291,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Named(
|
||||
ExprNamed {
|
||||
range: 295..301,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 295..296,
|
||||
id: Name("b"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 300..301,
|
||||
value: Int(
|
||||
1,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
parenthesized: true,
|
||||
},
|
||||
),
|
||||
generators: [
|
||||
Comprehension {
|
||||
range: 304..322,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 308..309,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 313..322,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 313..318,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 319..322,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 320..321,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
Comprehension {
|
||||
range: 323..340,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 327..328,
|
||||
id: Name("b"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 332..340,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 332..337,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 337..340,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 338..339,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
)
|
||||
```
|
||||
## Semantic Syntax Errors
|
||||
|
||||
|
|
||||
1 | [(a := 0) for a in range(0)]
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
2 | {(a := 0) for a in range(0)}
|
||||
3 | {(a := 0): val for a in range(0)}
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
1 | [(a := 0) for a in range(0)]
|
||||
2 | {(a := 0) for a in range(0)}
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
3 | {(a := 0): val for a in range(0)}
|
||||
4 | {key: (a := 0) for a in range(0)}
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
1 | [(a := 0) for a in range(0)]
|
||||
2 | {(a := 0) for a in range(0)}
|
||||
3 | {(a := 0): val for a in range(0)}
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
4 | {key: (a := 0) for a in range(0)}
|
||||
5 | ((a := 0) for a in range(0))
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
2 | {(a := 0) for a in range(0)}
|
||||
3 | {(a := 0): val for a in range(0)}
|
||||
4 | {key: (a := 0) for a in range(0)}
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
5 | ((a := 0) for a in range(0))
|
||||
6 | [[(a := 0)] for a in range(0)]
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
3 | {(a := 0): val for a in range(0)}
|
||||
4 | {key: (a := 0) for a in range(0)}
|
||||
5 | ((a := 0) for a in range(0))
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
6 | [[(a := 0)] for a in range(0)]
|
||||
7 | [(a := 0) for b in range (0) for a in range(0)]
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
4 | {key: (a := 0) for a in range(0)}
|
||||
5 | ((a := 0) for a in range(0))
|
||||
6 | [[(a := 0)] for a in range(0)]
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
7 | [(a := 0) for b in range (0) for a in range(0)]
|
||||
8 | [(a := 0) for a in range (0) for b in range(0)]
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
5 | ((a := 0) for a in range(0))
|
||||
6 | [[(a := 0)] for a in range(0)]
|
||||
7 | [(a := 0) for b in range (0) for a in range(0)]
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
8 | [(a := 0) for a in range (0) for b in range(0)]
|
||||
9 | [((a := 0), (b := 1)) for a in range (0) for b in range(0)]
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
6 | [[(a := 0)] for a in range(0)]
|
||||
7 | [(a := 0) for b in range (0) for a in range(0)]
|
||||
8 | [(a := 0) for a in range (0) for b in range(0)]
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
9 | [((a := 0), (b := 1)) for a in range (0) for b in range(0)]
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
7 | [(a := 0) for b in range (0) for a in range(0)]
|
||||
8 | [(a := 0) for a in range (0) for b in range(0)]
|
||||
9 | [((a := 0), (b := 1)) for a in range (0) for b in range(0)]
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
7 | [(a := 0) for b in range (0) for a in range(0)]
|
||||
8 | [(a := 0) for a in range (0) for b in range(0)]
|
||||
9 | [((a := 0), (b := 1)) for a in range (0) for b in range(0)]
|
||||
| ^ Syntax Error: assignment expression cannot rebind comprehension variable
|
||||
|
|
|
@ -1,7 +1,6 @@
|
|||
---
|
||||
source: crates/ruff_python_parser/tests/fixtures.rs
|
||||
input_file: crates/ruff_python_parser/resources/valid/expressions/arguments.py
|
||||
snapshot_kind: text
|
||||
---
|
||||
## AST
|
||||
|
||||
|
@ -1159,7 +1158,7 @@ Module(
|
|||
target: Name(
|
||||
ExprName {
|
||||
range: 562..563,
|
||||
id: Name("x"),
|
||||
id: Name("i"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
|
|
|
@ -0,0 +1,85 @@
|
|||
---
|
||||
source: crates/ruff_python_parser/tests/fixtures.rs
|
||||
input_file: crates/ruff_python_parser/resources/inline/ok/non_rebound_comprehension_variable.py
|
||||
---
|
||||
## AST
|
||||
|
||||
```
|
||||
Module(
|
||||
ModModule {
|
||||
range: 0..27,
|
||||
body: [
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 0..26,
|
||||
value: ListComp(
|
||||
ExprListComp {
|
||||
range: 0..26,
|
||||
elt: Named(
|
||||
ExprNamed {
|
||||
range: 1..7,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 1..2,
|
||||
id: Name("a"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 6..7,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
generators: [
|
||||
Comprehension {
|
||||
range: 8..25,
|
||||
target: Name(
|
||||
ExprName {
|
||||
range: 12..13,
|
||||
id: Name("x"),
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
iter: Call(
|
||||
ExprCall {
|
||||
range: 17..25,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 17..22,
|
||||
id: Name("range"),
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 22..25,
|
||||
args: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 23..24,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
ifs: [],
|
||||
is_async: false,
|
||||
},
|
||||
],
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
)
|
||||
```
|
Loading…
Add table
Add a link
Reference in a new issue