mirror of
https://github.com/graphql-python/graphene.git
synced 2025-04-25 03:43:42 +03:00
034b5385a5
* Add isort and seed-isort-config pre-commit hook * Fix erroneous isort moving comment to the top of file
41 lines
1.2 KiB
Python
41 lines
1.2 KiB
Python
from __future__ import unicode_literals
|
|
|
|
from graphql.language.ast import (BooleanValue, FloatValue, IntValue,
|
|
ListValue, ObjectValue, StringValue)
|
|
|
|
from graphene.types.scalars import MAX_INT, MIN_INT
|
|
|
|
from .scalars import Scalar
|
|
|
|
|
|
class GenericScalar(Scalar):
|
|
"""
|
|
The `GenericScalar` scalar type represents a generic
|
|
GraphQL scalar value that could be:
|
|
String, Boolean, Int, Float, List or Object.
|
|
"""
|
|
|
|
@staticmethod
|
|
def identity(value):
|
|
return value
|
|
|
|
serialize = identity
|
|
parse_value = identity
|
|
|
|
@staticmethod
|
|
def parse_literal(ast):
|
|
if isinstance(ast, (StringValue, BooleanValue)):
|
|
return ast.value
|
|
elif isinstance(ast, IntValue):
|
|
num = int(ast.value)
|
|
if MIN_INT <= num <= MAX_INT:
|
|
return num
|
|
elif isinstance(ast, FloatValue):
|
|
return float(ast.value)
|
|
elif isinstance(ast, ListValue):
|
|
return [GenericScalar.parse_literal(value) for value in ast.values]
|
|
elif isinstance(ast, ObjectValue):
|
|
return {field.name.value: GenericScalar.parse_literal(field.value) for field in ast.fields}
|
|
else:
|
|
return None
|