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from __future__ import absolute_import
from decimal import Decimal as _Decimal
from graphql.language import ast
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), 'Received not compatible Decimal "{}"'.format(
repr(dec)
)
return str(dec)
@classmethod
def parse_literal(cls, node):
if isinstance(node, ast.StringValue):
return cls.parse_value(node.value)
@staticmethod
def parse_value(value):
try:
return _Decimal(value)
except ValueError:
return None
|
