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from typing import List, Optional, Sequence, Union
from . import fields
from .traversal import Annotation, Traversal
class ValidationError(Annotation):
def __init__(self, prefix: Optional[str], field: "fields.Field", msg: str, code: str = None):
self.prefix = prefix
self.field = field
self.msg = msg
self.code = code
def __str__(self):
if self.code is not None:
return "{}: [{}] {}".format(self.qualified_field, self.code, self.msg)
else:
return "{}: {}".format(self.qualified_field, self.msg)
Fields = Union["fields.Field", Sequence["fields.Field"]]
class Validation(Traversal):
def __init__(self,
prefix: Optional[str] = None,
warnings: Optional[List[ValidationError]] = None,
errors: Optional[List[ValidationError]] = None):
super().__init__(prefix)
self.warnings: List[ValidationError]
self.errors: List[ValidationError]
if warnings is None:
self.warnings = []
else:
self.warnings = warnings
if errors is None:
self.errors = []
else:
self.errors = errors
def with_prefix(self, prefix: str):
return Validation(prefix, self.warnings, self.errors)
def add_warning(self, field: Fields, msg: str, code: str = None):
if isinstance(field, fields.Field):
self.warnings.append(ValidationError(self.prefix, field, msg, code))
else:
for f in field:
self.warnings.append(ValidationError(self.prefix, f, msg, code))
def add_error(self, field: Fields, msg: str, code: str = None):
if isinstance(field, fields.Field):
self.errors.append(ValidationError(self.prefix, field, msg, code))
else:
for f in field:
self.errors.append(ValidationError(self.prefix, f, msg, code))
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