Brent Westbrook e4f5fe8cf7 [syntax-errors] Duplicate type parameter names (#16858) ...

Summary
--

Detects duplicate type parameter names in function definitions, class
definitions, and type alias statements.

I also boxed the `type_params` field on `StmtTypeAlias` to make it
easier to
`match` with functions and classes. (That's the reason for the red-knot
code
owner review requests, sorry!)

Test Plan
--

New `ruff_python_syntax_errors` unit tests.

Fixes #11119.

2025-03-21 15:06:22 -04:00

..

ambiguous_lpar_with_items_binary_expr.py

Consider binary expr for parenthesized with items parsing (#11012)

2024-04-18 21:39:30 +05:30

ambiguous_lpar_with_items_if_expr.py

Consider if expression for parenthesized with items parsing (#11010)

2024-04-18 14:30:15 +00:00

ann_assign_stmt_simple_target.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

args_unparenthesized_generator.py

Raise syntax error for unparenthesized generator expr in multi-argument call (#12445)

2024-07-22 14:44:20 +05:30

assign_targets_terminator.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

async_for_statement.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

async_function_definition.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

async_with_statement.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

class_def_arguments.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

class_type_params_py312.py

[syntax-errors] Type parameter lists before Python 3.12 (#16479)

2025-03-05 13:19:09 +00:00

comma_separated_regular_list_terminator.py

Implement re-lexing logic for better error recovery (#11845)

2024-06-17 06:47:00 +00:00

decorator_async_function.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

decorator_await_expression_py39.py

[syntax-errors] Improve error message and range for pre-PEP-614 decorator syntax errors (#16581)

2025-03-17 11:17:27 +00:00

decorator_expression_dotted_ident_py38.py

[syntax-errors] Named expressions in decorators before Python 3.9 (#16386)

2025-03-05 17:08:18 +00:00

decorator_expression_eval_hack_py38.py

[syntax-errors] Named expressions in decorators before Python 3.9 (#16386)

2025-03-05 17:08:18 +00:00

decorator_expression_identity_hack_py38.py

[syntax-errors] Named expressions in decorators before Python 3.9 (#16386)

2025-03-05 17:08:18 +00:00

decorator_expression_py39.py

[syntax-errors] Named expressions in decorators before Python 3.9 (#16386)

2025-03-05 17:08:18 +00:00

del_targets_terminator.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

dotted_name_normalized_spaces.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

except_star_py311.py

[syntax-errors] except* before Python 3.11 (#16446)

2025-03-02 18:20:18 +00:00

except_stmt_as_name_soft_keyword.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

for_in_target_valid_expr.py

Add ExpressionContext for expression parsing (#11055)

2024-04-23 04:19:05 +00:00

for_iter_unpack_py38.py

[syntax-errors] Tuple unpacking in for statement iterator clause before Python 3.9 (#16558)

2025-03-13 15:55:17 -04:00

for_iter_unpack_py39.py

[syntax-errors] Tuple unpacking in for statement iterator clause before Python 3.9 (#16558)

2025-03-13 15:55:17 -04:00

from_import_no_space.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

from_import_soft_keyword_module_name.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

from_import_stmt_terminator.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

fstring_format_spec_terminator.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

function_def_parameter_range.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

function_def_parenthesized_return_types.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

function_def_valid_return_expr.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

function_type_params_py312.py

[syntax-errors] Type parameter lists before Python 3.12 (#16479)

2025-03-05 13:19:09 +00:00

global_stmt.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

import_as_name_soft_keyword.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

import_stmt_terminator.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

iter_unpack_return_py37.py

[syntax-errors] Tuple unpacking in return and yield before Python 3.8 (#16485)

2025-03-06 11:57:20 -05:00

iter_unpack_return_py38.py

[syntax-errors] Tuple unpacking in return and yield before Python 3.8 (#16485)

2025-03-06 11:57:20 -05:00

iter_unpack_yield_py37.py

[syntax-errors] Tuple unpacking in return and yield before Python 3.8 (#16485)

2025-03-06 11:57:20 -05:00

iter_unpack_yield_py38.py

[syntax-errors] Tuple unpacking in return and yield before Python 3.8 (#16485)

2025-03-06 11:57:20 -05:00

lambda_with_no_parameters.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

lambda_with_valid_body.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

match_after_py310.py

Allow passing ParseOptions to inline tests (#16357)

2025-02-27 10:23:15 -05:00

match_as_pattern_soft_keyword.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

match_as_pattern.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

match_attr_pattern_soft_keyword.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

match_classify_as_identifier_1.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

match_classify_as_identifier_2.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

match_classify_as_keyword_1.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

match_classify_as_keyword_2.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

match_classify_as_keyword_or_identifier.py

Maintain synchronicity between the lexer and the parser (#11457)

2024-06-03 18:23:50 +05:30

match_sequence_pattern_parentheses_terminator.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

match_sequence_pattern_terminator.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

match_stmt_subject_expr.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

match_stmt_valid_guard_expr.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

non_duplicate_type_parameter_names.py

[syntax-errors] Duplicate type parameter names (#16858)

2025-03-21 15:06:22 -04:00

non_rebound_comprehension_variable.py

[syntax-errors] Start detecting compile-time syntax errors (#16106)

2025-03-21 14:45:25 -04:00

nonlocal_stmt.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

param_with_annotation.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

param_with_default.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

param_with_star_annotation_py310.py

[syntax-errors] Fix star annotation before Python 3.11 (#16878)

2025-03-20 17:44:52 -04:00

param_with_star_annotation_py311.py

[syntax-errors] Star annotations before Python 3.11 (#16545)

2025-03-14 15:20:44 +00:00

param_with_star_annotation.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

params_non_default_after_star.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

params_seen_keyword_only_param_after_star.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

parenthesized_context_manager_py39.py

[syntax-errors] Parenthesized context managers before Python 3.9 (#16523)

2025-03-17 08:54:55 -04:00

parenthesized_kwarg_py37.py

[syntax-errors] Parenthesized keyword argument names after Python 3.8 (#16482)

2025-03-06 12:18:13 -05:00

parenthesized_named_expr_index_py38.py

[syntax-errors] Unparenthesized assignment expressions in sets and indexes (#16404)

2025-03-14 15:06:42 -04:00

parenthesized_named_expr_py38.py

[syntax-errors] Unparenthesized assignment expressions in sets and indexes (#16404)

2025-03-14 15:06:42 -04:00

pep701_f_string_py311.py

[syntax-errors] PEP 701 f-strings before Python 3.12 (#16543)

2025-03-18 11:12:15 -04:00

pep701_f_string_py312.py

[syntax-errors] PEP 701 f-strings before Python 3.12 (#16543)

2025-03-18 11:12:15 -04:00

pos_only_py38.py

[syntax-errors] Positional-only parameters before Python 3.8 (#16481)

2025-03-05 13:46:43 +00:00

simple_stmts_in_block.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

simple_stmts_with_semicolons.py

Replace LALRPOP parser with hand-written parser (#10036)

2024-04-18 17:57:39 +05:30

star_index_py311.py

[syntax-errors] Star expression in index before Python 3.11 (#16544)

2025-03-14 14:51:34 +00:00

tuple_context_manager_py38.py

[syntax-errors] Parenthesized context managers before Python 3.9 (#16523)

2025-03-17 08:54:55 -04:00

type_param_default_py313.py

[syntax-errors] Type parameter defaults before Python 3.13 (#16447)

2025-03-04 16:53:38 +00:00

type_param_param_spec.py

Add support for PEP 696 syntax (#11120)

2024-04-26 09:47:29 +02:00

type_param_type_var_tuple.py

Add support for PEP 696 syntax (#11120)

2024-04-26 09:47:29 +02:00

type_param_type_var.py

Add support for PEP 696 syntax (#11120)

2024-04-26 09:47:29 +02:00

type_stmt_py312.py

[syntax-errors] type alias statements before Python 3.12 (#16478)

2025-03-04 17:20:10 +00:00

unparenthesized_named_expr_index_py39.py

[syntax-errors] Unparenthesized assignment expressions in sets and indexes (#16404)

2025-03-14 15:06:42 -04:00

unparenthesized_named_expr_py39.py

[syntax-errors] Unparenthesized assignment expressions in sets and indexes (#16404)

2025-03-14 15:06:42 -04:00

walrus_py38.py

[syntax-errors] Assignment expressions before Python 3.8 (#16383)

2025-02-28 17:13:46 -05:00