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Drop support for parsing Python 2 (#3933)
[etc/vim.git] / tests / data / py_310 / pattern_matching_generic.py
1 re.match()
2 match = a
3 with match() as match:
4     match = f"{match}"
5
6 re.match()
7 match = a
8 with match() as match:
9     match = f"{match}"
10
11
12 def get_grammars(target_versions: Set[TargetVersion]) -> List[Grammar]:
13     if not target_versions:
14         # No target_version specified, so try all grammars.
15         return [
16             # Python 3.7+
17             pygram.python_grammar_no_print_statement_no_exec_statement_async_keywords,
18             # Python 3.0-3.6
19             pygram.python_grammar_no_print_statement_no_exec_statement,
20             # Python 2.7 with future print_function import
21             pygram.python_grammar_no_print_statement,
22             # Python 2.7
23             pygram.python_grammar,
24         ]
25
26     match match:
27         case case:
28             match match:
29                 case case:
30                     pass
31
32     if all(version.is_python2() for version in target_versions):
33         # Python 2-only code, so try Python 2 grammars.
34         return [
35             # Python 2.7 with future print_function import
36             pygram.python_grammar_no_print_statement,
37             # Python 2.7
38             pygram.python_grammar,
39         ]
40
41     re.match()
42     match = a
43     with match() as match:
44         match = f"{match}"
45
46     def test_patma_139(self):
47         x = False
48         match x:
49             case bool(z):
50                 y = 0
51         self.assertIs(x, False)
52         self.assertEqual(y, 0)
53         self.assertIs(z, x)
54
55     # Python 3-compatible code, so only try Python 3 grammar.
56     grammars = []
57     if supports_feature(target_versions, Feature.PATTERN_MATCHING):
58         # Python 3.10+
59         grammars.append(pygram.python_grammar_soft_keywords)
60     # If we have to parse both, try to parse async as a keyword first
61     if not supports_feature(
62         target_versions, Feature.ASYNC_IDENTIFIERS
63     ) and not supports_feature(target_versions, Feature.PATTERN_MATCHING):
64         # Python 3.7-3.9
65         grammars.append(
66             pygram.python_grammar_no_print_statement_no_exec_statement_async_keywords
67         )
68     if not supports_feature(target_versions, Feature.ASYNC_KEYWORDS):
69         # Python 3.0-3.6
70         grammars.append(pygram.python_grammar_no_print_statement_no_exec_statement)
71
72     def test_patma_155(self):
73         x = 0
74         y = None
75         match x:
76             case 1e1000:
77                 y = 0
78         self.assertEqual(x, 0)
79         self.assertIs(y, None)
80
81         x = range(3)
82         match x:
83             case [y, case as x, z]:
84                 w = 0
85
86     # At least one of the above branches must have been taken, because every Python
87     # version has exactly one of the two 'ASYNC_*' flags
88     return grammars
89
90
91 def lib2to3_parse(src_txt: str, target_versions: Iterable[TargetVersion] = ()) -> Node:
92     """Given a string with source, return the lib2to3 Node."""
93     if not src_txt.endswith("\n"):
94         src_txt += "\n"
95
96     grammars = get_grammars(set(target_versions))
97
98
99 re.match()
100 match = a
101 with match() as match:
102     match = f"{match}"
103
104 re.match()
105 match = a
106 with match() as match:
107     match = f"{match}"