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a74c402f13
Remove duplicated test Remove unicode for python 3 Add more tests Add None case Update json type Remove unnecessary dependencies Add more test Add test
40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
from __future__ import unicode_literals
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from graphql.language.ast import (BooleanValue, FloatValue, IntValue,
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StringValue, ListValue, ObjectValue)
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from graphene.types.scalars import MIN_INT, MAX_INT
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from .scalars import Scalar
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class JSON(Scalar):
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"""
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The `JSON` scalar type represents JSON values as specified by
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[ECMA-404](http://www.ecma-international.org/
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publications/files/ECMA-ST/ECMA-404.pdf).
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"""
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@staticmethod
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def identity(value):
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return value
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serialize = identity
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parse_value = identity
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@staticmethod
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def parse_literal(ast):
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if isinstance(ast, (StringValue, BooleanValue)):
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return ast.value
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elif isinstance(ast, IntValue):
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num = int(ast.value)
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if MIN_INT <= num <= MAX_INT:
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return num
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elif isinstance(ast, FloatValue):
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return float(ast.value)
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elif isinstance(ast, ListValue):
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return [JSON.parse_literal(value) for value in ast.values]
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elif isinstance(ast, ObjectValue):
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return {field.name.value: JSON.parse_literal(field.value) for field in ast.fields}
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else:
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return None
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