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gh-133196: Guard PEP 750 grammar with CHECK_VERSION (#133225)

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This commit is contained in:
sobolevn
2025-05-01 10:17:07 +03:00
committed by GitHub
parent feac343d1a
commit 5cdd49b3f4
3 changed files with 13 additions and 2 deletions
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7
Grammar/python.gram
View File

@@ -971,7 +971,12 @@ tstring_middle[expr_ty]:
| tstring_replacement_field
| t=TSTRING_MIDDLE { _PyPegen_constant_from_token(p, t) }
tstring[expr_ty] (memo):
| a=TSTRING_START b=tstring_middle* c=TSTRING_END { _PyPegen_template_str(p, a, (asdl_expr_seq*)b, c) }
| a=TSTRING_START b=tstring_middle* c=TSTRING_END {
CHECK_VERSION(
expr_ty,
14,
"t-strings are",
_PyPegen_template_str(p, a, (asdl_expr_seq*)b, c)) }
string[expr_ty]: s[Token*]=STRING { _PyPegen_constant_from_string(p, s) }
strings[expr_ty] (memo): a[asdl_expr_seq*]=(fstring|string|tstring)+ { _PyPegen_concatenate_strings(p, a, EXTRA) }

6
Lib/test/test_ast/test_ast.py
View File

@@ -675,6 +675,12 @@ class AST_Tests(unittest.TestCase):
with self.assertRaises(SyntaxError):
ast.parse('(x := 0)', feature_version=(3, 7))
def test_pep750_tstring(self):
code = 't""'
ast.parse(code, feature_version=(3, 14))
with self.assertRaises(SyntaxError):
ast.parse(code, feature_version=(3, 13))
def test_pep758_except_without_parens(self):
code = textwrap.dedent("""
try:

2
Parser/parser.c generated
View File

@@ -16860,7 +16860,7 @@ tstring_rule(Parser *p)
)
{
D(fprintf(stderr, "%*c+ tstring[%d-%d]: %s succeeded!\n", p->level, ' ', _mark, p->mark, "TSTRING_START tstring_middle* TSTRING_END"));
_res = _PyPegen_template_str ( p , a , ( asdl_expr_seq* ) b , c );
_res = CHECK_VERSION ( expr_ty , 14 , "t-strings are" , _PyPegen_template_str ( p , a , ( asdl_expr_seq* ) b , c ) );
if (_res == NULL && PyErr_Occurred()) {
p->error_indicator = 1;
p->level--;