Dhruv Manilawala 7cb2619ef5 Add syntax error for empty type parameter list (#12030) ...

## Summary

(I'm pretty sure I added this in the parser re-write but must've got
lost in the rebase?)

This PR raises a syntax error if the type parameter list is empty.

As per the grammar, there should be at least one type parameter:
```
type_params: 
    | invalid_type_params
    | '[' type_param_seq ']' 

type_param_seq: ','.type_param+ [','] 
```

Verified via the builtin `ast` module as well:
```console    
$ python3.13 -m ast parser/_.py
Traceback (most recent call last):
  [..]
  File "parser/_.py", line 1
    def foo[]():
            ^
SyntaxError: Type parameter list cannot be empty
```

## Test Plan

Add inline test cases and update the snapshots.

2024-06-26 08:10:35 +05:30

..

ann_assign_stmt_invalid_annotation.py

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

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

ann_assign_stmt_invalid_target.py

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

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

ann_assign_stmt_invalid_value.py

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

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

ann_assign_stmt_missing_rhs.py

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

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

ann_assign_stmt_type_alias_annotation.py

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

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

assert_empty_msg.py

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

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

assert_empty_test.py

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

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

assert_invalid_msg_expr.py

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

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

assert_invalid_test_expr.py

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

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

assign_stmt_invalid_target.py

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

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

assign_stmt_invalid_value_expr.py

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

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

assign_stmt_keyword_target.py

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

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

assign_stmt_missing_rhs.py

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

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

async_unexpected_token.py

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

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

aug_assign_stmt_invalid_target.py

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

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

aug_assign_stmt_invalid_value.py

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

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

aug_assign_stmt_missing_rhs.py

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

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

case_expect_indented_block.py

Expect indented case block instead of match stmt (#11033)

2024-04-19 16:46:15 +05:30

class_def_empty_body.py

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

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

class_def_missing_name.py

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

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

class_def_unclosed_type_param_list.py

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

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

clause_expect_indented_block.py

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

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

clause_expect_single_statement.py

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

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

comma_separated_missing_comma_between_elements.py

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

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

comma_separated_missing_comma.py

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

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

comma_separated_missing_element_between_commas.py

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

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

comma_separated_missing_first_element.py

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

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

comprehension_missing_for_after_async.py

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

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

decorator_invalid_expression.py

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

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

decorator_missing_expression.py

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

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

decorator_missing_newline.py

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

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

decorator_unexpected_token.py

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

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

del_incomplete_target.py

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

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

del_stmt_empty.py

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

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

dotted_name_multiple_dots.py

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

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

except_stmt_invalid_expression.py

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

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

except_stmt_missing_as_name.py

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

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

except_stmt_missing_exception_and_as_name.py

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

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

except_stmt_missing_exception.py

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

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

except_stmt_unparenthesized_tuple.py

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

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

f_string_empty_expression.py

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

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

f_string_invalid_conversion_flag_name_tok.py

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

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

f_string_invalid_conversion_flag_other_tok.py

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

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

f_string_invalid_starred_expr.py

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

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

f_string_lambda_without_parentheses.py

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

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

f_string_unclosed_lbrace_in_format_spec.py

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

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

f_string_unclosed_lbrace.py

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

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

for_stmt_invalid_iter_expr.py

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

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

for_stmt_invalid_target_binary_expr.py

Add ExpressionContext for expression parsing (#11055)

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

for_stmt_invalid_target_in_keyword.py

Add ExpressionContext for expression parsing (#11055)

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

for_stmt_invalid_target.py

Add ExpressionContext for expression parsing (#11055)

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

for_stmt_missing_in_keyword.py

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

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

for_stmt_missing_iter.py

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

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

for_stmt_missing_target.py

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

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

from_import_dotted_names.py

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

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

from_import_empty_names.py

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

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

from_import_missing_module.py

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

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

from_import_missing_rpar.py

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

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

from_import_star_with_other_names.py

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

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

from_import_unparenthesized_trailing_comma.py

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

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

function_def_empty_body.py

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

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

function_def_invalid_return_expr.py

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

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

function_def_missing_identifier.py

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

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

function_def_missing_return_type.py

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

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

function_def_unclosed_parameter_list.py

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

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

function_def_unclosed_type_param_list.py

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

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

function_def_unparenthesized_return_types.py

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

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

global_stmt_empty.py

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

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

global_stmt_expression.py

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

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

global_stmt_trailing_comma.py

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

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

if_stmt_elif_missing_colon.py

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

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

if_stmt_empty_body.py

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

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

if_stmt_invalid_elif_test_expr.py

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

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

if_stmt_invalid_test_expr.py

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

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

if_stmt_missing_colon.py

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

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

if_stmt_missing_test.py

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

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

if_stmt_misspelled_elif.py

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

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

implicitly_concatenated_unterminated_string_multiline.py

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

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

implicitly_concatenated_unterminated_string.py

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

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

import_alias_missing_asname.py

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

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

import_stmt_empty.py

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

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

import_stmt_parenthesized_names.py

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

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

import_stmt_star_import.py

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

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

import_stmt_trailing_comma.py

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

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

invalid_byte_literal.py

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

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

invalid_del_target.py

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

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

invalid_fstring_literal_element.py

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

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

invalid_string_literal.py

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

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

lambda_body_with_starred_expr.py

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

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

lambda_body_with_yield_expr.py

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

2024-04-18 17:57:39 +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_classify_as_keyword.py

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

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

match_expected_colon.py

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

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

match_stmt_expect_indented_block.py

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

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

match_stmt_expected_case_block.py

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

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

match_stmt_invalid_guard_expr.py

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

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

match_stmt_invalid_subject_expr.py

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

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

match_stmt_missing_guard_expr.py

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

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

match_stmt_missing_pattern.py

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

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

match_stmt_no_newline_before_case.py

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

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

match_stmt_single_starred_subject.py

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

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

mixed_bytes_and_non_bytes_literals.py

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

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

multiple_clauses_on_same_line.py

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

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

node_range_with_gaps.py

Use empty range when there's "gap" in token source (#11032)

2024-04-19 11:36:26 +00:00

nonlocal_stmt_empty.py

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

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

nonlocal_stmt_expression.py

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

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

nonlocal_stmt_trailing_comma.py

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

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

param_missing_annotation.py

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

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

param_missing_default.py

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

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

param_with_invalid_annotation.py

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

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

param_with_invalid_default.py

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

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

param_with_invalid_star_annotation.py

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

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

params_duplicate_names.py

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

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

params_expected_after_star_separator.py

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

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

params_kwarg_after_star_separator.py

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

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

params_multiple_kwargs.py

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

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

params_multiple_slash_separator.py

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

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

params_multiple_star_separator.py

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

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

params_multiple_varargs.py

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

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

params_no_arg_before_slash.py

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

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

params_non_default_after_default.py

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

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

params_star_after_slash.py

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

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

params_star_separator_after_star_param.py

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

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

params_var_keyword_with_default.py

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

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

params_var_positional_with_default.py

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

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

raise_stmt_invalid_cause.py

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

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

raise_stmt_invalid_exc.py

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

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

raise_stmt_unparenthesized_tuple_cause.py

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

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

raise_stmt_unparenthesized_tuple_exc.py

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

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

return_stmt_invalid_expr.py

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

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

simple_and_compound_stmt_on_same_line_in_block.py

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

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

simple_and_compound_stmt_on_same_line.py

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

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

simple_stmts_on_same_line_in_block.py

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

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

simple_stmts_on_same_line.py

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

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

try_stmt_invalid_order.py

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

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

try_stmt_missing_except_finally.py

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

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

try_stmt_misspelled_except.py

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

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

type_alias_incomplete_stmt.py

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

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

type_alias_invalid_value_expr.py

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

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

type_param_invalid_bound_expr.py

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

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

type_param_missing_bound.py

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

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

type_param_param_spec_bound.py

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

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

type_param_param_spec_invalid_default_expr.py

Add support for PEP 696 syntax (#11120)

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

type_param_param_spec_missing_default.py

Add support for PEP 696 syntax (#11120)

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

type_param_type_var_invalid_default_expr.py

Add support for PEP 696 syntax (#11120)

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

type_param_type_var_missing_default.py

Add support for PEP 696 syntax (#11120)

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

type_param_type_var_tuple_bound.py

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

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

type_param_type_var_tuple_invalid_default_expr.py

Add support for PEP 696 syntax (#11120)

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

type_param_type_var_tuple_missing_default.py

Add support for PEP 696 syntax (#11120)

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

type_params_empty.py

Add syntax error for empty type parameter list (#12030)

2024-06-26 08:10:35 +05:30

unterminated_fstring_newline_recovery.py

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

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

while_stmt_invalid_test_expr.py

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

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

while_stmt_missing_colon.py

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

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

while_stmt_missing_test.py

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

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

with_items_parenthesized_missing_colon.py

Use speculative parsing for with-items (#11770)

2024-06-06 08:59:56 +00:00

with_items_parenthesized_missing_comma.py

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

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