def _read_rule_set(path: str) -> RewriteRule:
logging.info("reading rewrite rules from %r", path)
# Below read call might throw IOError.
lines = morphotactics_reader.read_rule_definitions(path)
for index, line in lines.items():
try:
morphotactics_validator.validate(line)
except morphotactics_validator.InvalidMorphotacticsRuleError as error:
raise MorphotacticsCompilerError(
f"Rewrite rule at line {index} of '{path}' is illformed. {error}")
return morphotactics_parser.parse(list(lines.values()))
def test_raises_exception(self, rule_definition, error):
with self.assertRaisesRegexp(validator.InvalidMorphotacticsRuleError,
error):
validator.validate(rule_definition)
def test_success(self, rule_definition):
self.assertIsNone(validator.validate(rule_definition))