def _user_syntax_error_string(source_code):
try:
ast.parse(source_code)
except SyntaxError as e:
return error_strings.user_syntax_error(e, source_code)
else:
raise AssertionError("Didn't fail to parse: %s" % source_code)
def test_synthetic_error_long(self):
"""User-synthesized SyntaxErrors still give nice output."""
self.assertEqual(
error_strings.user_syntax_error(SyntaxError('message'), 'a\nb'),
textwrap.dedent("""\
Failed to parse Python-like source code (message).
a
b"""))
def compile_matcher(user_input: str) -> matcher.Matcher:
"""Creates a :class:`~refex.python.matcher.Matcher` from a string."""
user_input = textwrap.dedent(user_input).strip('\n')
try:
return semiliteral_eval.Eval(user_input,
callables=_ALL_MATCHERS,
constants=matcher.registered_constants)
except SyntaxError as e:
raise ValueError(error_strings.user_syntax_error(e, user_input))
def test_synthetic_error_no_msg(self):
self.assertEqual(
error_strings.user_syntax_error(SyntaxError(''), 'a b'),
textwrap.dedent("""\
Failed to parse Python-like source code (<unknown reason>).
a b"""))
def test_synthetic_error_short(self):
self.assertEqual(
error_strings.user_syntax_error(SyntaxError('message'), 'a b'),
textwrap.dedent("""\
Failed to parse Python-like source code (message).
a b"""))