def parse_json(content, validator=None):
assert isinstance(content, (str, bytes))
if isinstance(content, bytes):
content = content.decode('utf-8', 'ignore')
if not content.strip():
marker = Marker(0, '')
raise ParseError('No content.', marker=marker, base_format='json')
try:
token = None if validator is None else tokenize_json(content)
data = json.loads(content)
except json.decoder.JSONDecodeError as exc:
message = exc.msg + '.'
marker = Marker(exc.pos, content)
raise ParseError(message, marker=marker, base_format='json') from None
if validator is None:
return data
try:
return validator.validate(data)
except ValidationError as exc:
exc.set_error_context(token, content)
raise exc
def parse_yaml(content, validator=None):
assert isinstance(content, (str, bytes))
if isinstance(content, bytes):
content = content.decode('utf-8', 'ignore')
if not content.strip():
marker = Marker(0, '')
raise ParseError('No content.', marker=marker, base_format='yaml')
try:
token = None if validator is None else tokenize_yaml(content)
data = yaml.safe_load(content)
except (yaml.scanner.ScannerError, yaml.parser.ParserError) as exc:
position = getattr(exc, 'index', 0)
marker = Marker(position, content)
message = exc.problem
raise ParseError(message, marker=marker, base_format='yaml') from None
if validator is None:
return data
try:
return validator.validate(data)
except ValidationError as exc:
exc.set_error_context(token, content)
raise exc
def test_invalid_properties():
with pytest.raises(ValidationError) as exc:
parse_json('{"a": "abc", "b": 123}', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [
ErrorMessage('Must be a number.', Marker(6)),
ErrorMessage('Invalid property name.', Marker(13))
]
assert error_messages == expecting
def test_invalid_top_level_item():
with pytest.raises(ValidationError) as exc:
parse_json('123', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [ErrorMessage('Must be an object.', Marker(0))]
assert error_messages == expecting
def test_invalid_token():
with pytest.raises(ParseError) as exc:
parse_json('-', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [ErrorMessage("Expecting value.", Marker(0))]
assert error_messages == expecting
def test_object_unterminated_after_value():
with pytest.raises(ParseError) as exc:
parse_json('{"abc": "def"', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [ErrorMessage("Expecting ',' delimiter.", Marker(13))]
assert error_messages == expecting
def test_object_unterminated_after_key():
with pytest.raises(ParseError) as exc:
parse_json('{"abc": ', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [ErrorMessage("Expecting value.", Marker(8))]
assert error_messages == expecting
def test_object_missing_comma_delimiter():
with pytest.raises(ParseError) as exc:
parse_json('{"abc": "def" 1', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [ErrorMessage("Expecting ',' delimiter.", Marker(14))]
assert error_messages == expecting
def test_empty_string():
with pytest.raises(ParseError) as exc:
parse_json(b'', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [ErrorMessage('No content.', Marker(0))]
assert error_messages == expecting
def test_object_invalid_property_name():
with pytest.raises(ParseError) as exc:
parse_json('{"abc": "def", 1', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [
ErrorMessage("Expecting property name enclosed in double quotes.",
Marker(15))
]
assert error_messages == expecting
def test_object_missing_property_name():
with pytest.raises(ParseError) as exc:
parse_json('{', VALIDATOR)
error_messages = exc.value.get_error_messages()
expecting = [
ErrorMessage('Expecting property name enclosed in double quotes.',
Marker(1))
]
assert error_messages == expecting
def infer_json_or_yaml(content):
assert isinstance(content, (str, bytes))
if isinstance(content, bytes):
content = content.decode('utf-8', 'ignore')
content = content.strip()
if not content:
marker = Marker(0, '')
raise ParseError('No content.', marker=marker)
return 'json' if content[0] in '{[' else 'yaml'