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class _ObjectMeta(type): | |
def __new__(meta, name, bases, dct): | |
new_dct = {'properties': {}, 'required_properties': [], 'required': False} | |
for name, obj in dct.items(): | |
if not isinstance(obj, _Type): | |
new_dct[name] = obj | |
else: | |
new_dct['properties'][name] = obj | |
if obj.required: | |
new_dct['required_properties'].append(name) | |
return super(_ObjectMeta, meta).__new__(meta, name, bases, new_dct) | |
class _Type(object): | |
def __init__(self, required=False, **kwargs): | |
self.required = required | |
def json(self): | |
if self.required: | |
return {'type': self.__class__.__name__.lower()} | |
else: | |
return {'type': [self.__class__.__name__.lower(), 'null']} | |
class Object(_Type): | |
__metaclass__ = _ObjectMeta | |
additional_properties = False | |
def create(self): | |
d = { | |
'type': 'object', | |
'required': self.required_properties, | |
'properties': dict((name, obj.json()) for name, obj in self.properties.items()), | |
} | |
if self.additional_properties: | |
d['additionalProperties'] = True | |
return d | |
def update(self): | |
d = { | |
'type': 'object', | |
'minProperties': 1, | |
'properties': dict((name, obj.json()) for name, obj in self.properties.items()), | |
} | |
if self.additional_properties: | |
d['additionalProperties'] = True | |
return d | |
class String(_Type): | |
pass | |
class Array(_Type): | |
def __init__(self, item_type=None, required=False, min_items=0): | |
self.item_type = item_type | |
self.required = required | |
self.min_items = min_items | |
def json(self): | |
data = super(Array, self).json() | |
data['minItems'] = self.min_items | |
if self.item_type: | |
data['items'] = create_if_needed(self.item_type).json() | |
return data | |
class Boolean(_Type): | |
pass | |
class OneOf(object): | |
def __init__(self, *types): | |
self.types = [create_if_needed(t) for t in types] | |
def json(self): | |
return {'oneOf': [t.json() for t in self.types]} | |
# FIXME: does type: object also need to be returned? | |
def create_if_needed(cls_or_obj): | |
return cls_or_obj() if isinstance(cls_or_obj, type) else cls_or_obj |
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