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import typing
class Error(Exception):
"""Base validation exception."""
class SchemaError(Error):
"""An error was encountered in the schema."""
class Invalid(Error):
"""The data was invalid.
:attr msg: The error message.
:attr path: The path to the error, as a list of keys in the source data.
:attr error_message: The actual error message that was raised, as a
string.
"""
def __init__(self, message: str, path: typing.Optional[typing.List[str]] = None, error_message: typing.Optional[str] = None, error_type: typing.Optional[str] = None) -> None:
Error.__init__(self, message)
self.path = path or []
self.error_message = error_message or message
self.error_type = error_type
@property
def msg(self) -> str:
return self.args[0]
def __str__(self) -> str:
path = ' @ data[%s]' % ']['.join(map(repr, self.path)) \
if self.path else ''
output = Exception.__str__(self)
if self.error_type:
output += ' for ' + self.error_type
return output + path
def prepend(self, path: typing.List[str]) -> None:
self.path = path + self.path
class MultipleInvalid(Invalid):
def __init__(self, errors: typing.Optional[typing.List[Invalid]] = None) -> None:
self.errors = errors[:] if errors else []
def __repr__(self) -> str:
return 'MultipleInvalid(%r)' % self.errors
@property
def msg(self) -> str:
return self.errors[0].msg
@property
def path(self) -> typing.List[str]:
return self.errors[0].path
@property
def error_message(self) -> str:
return self.errors[0].error_message
def add(self, error: Invalid) -> None:
self.errors.append(error)
def __str__(self) -> str:
return str(self.errors[0])
def prepend(self, path: typing.List[str]) -> None:
for error in self.errors:
error.prepend(path)
class RequiredFieldInvalid(Invalid):
"""Required field was missing."""
class ObjectInvalid(Invalid):
"""The value we found was not an object."""
class DictInvalid(Invalid):
"""The value found was not a dict."""
class ExclusiveInvalid(Invalid):
"""More than one value found in exclusion group."""
class InclusiveInvalid(Invalid):
"""Not all values found in inclusion group."""
class SequenceTypeInvalid(Invalid):
"""The type found is not a sequence type."""
class TypeInvalid(Invalid):
"""The value was not of required type."""
class ValueInvalid(Invalid):
"""The value was found invalid by evaluation function."""
class ContainsInvalid(Invalid):
"""List does not contain item"""
class ScalarInvalid(Invalid):
"""Scalars did not match."""
class CoerceInvalid(Invalid):
"""Impossible to coerce value to type."""
class AnyInvalid(Invalid):
"""The value did not pass any validator."""
class AllInvalid(Invalid):
"""The value did not pass all validators."""
class MatchInvalid(Invalid):
"""The value does not match the given regular expression."""
class RangeInvalid(Invalid):
"""The value is not in given range."""
class TrueInvalid(Invalid):
"""The value is not True."""
class FalseInvalid(Invalid):
"""The value is not False."""
class BooleanInvalid(Invalid):
"""The value is not a boolean."""
class UrlInvalid(Invalid):
"""The value is not a URL."""
class EmailInvalid(Invalid):
"""The value is not an email address."""
class FileInvalid(Invalid):
"""The value is not a file."""
class DirInvalid(Invalid):
"""The value is not a directory."""
class PathInvalid(Invalid):
"""The value is not a path."""
class LiteralInvalid(Invalid):
"""The literal values do not match."""
class LengthInvalid(Invalid):
pass
class DatetimeInvalid(Invalid):
"""The value is not a formatted datetime string."""
class DateInvalid(Invalid):
"""The value is not a formatted date string."""
class InInvalid(Invalid):
pass
class NotInInvalid(Invalid):
pass
class ExactSequenceInvalid(Invalid):
pass
class NotEnoughValid(Invalid):
"""The value did not pass enough validations."""
pass
class TooManyValid(Invalid):
"""The value passed more than expected validations."""
pass
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