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from decimal import Decimal as _Decimal
from graphql import Undefined
from graphql.language.ast import StringValueNode, IntValueNode
from .scalars import Scalar
class Decimal(Scalar):
"""
The `Decimal` scalar type represents a python Decimal.
"""
@staticmethod
def serialize(dec):
if isinstance(dec, str):
dec = _Decimal(dec)
assert isinstance(
dec, _Decimal
), f'Received not compatible Decimal "{repr(dec)}"'
return str(dec)
@classmethod
def parse_literal(cls, node, _variables=None):
if isinstance(node, (StringValueNode, IntValueNode)):
return cls.parse_value(node.value)
return Undefined
@staticmethod
def parse_value(value):
try:
return _Decimal(value)
except Exception:
return Undefined
|
