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110 lines
3.4 KiB
Python
110 lines
3.4 KiB
Python
import datetime
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from graphql.error import GraphQLError
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from graphql.language import StringValueNode, print_ast
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from .scalars import Scalar
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class Date(Scalar):
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"""
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The `Date` scalar type represents a Date
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value as specified by
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[iso8601](https://en.wikipedia.org/wiki/ISO_8601).
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"""
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@staticmethod
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def serialize(date):
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if isinstance(date, datetime.datetime):
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date = date.date()
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if not isinstance(date, datetime.date):
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raise GraphQLError(f"Date cannot represent value: {repr(date)}")
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return date.isoformat()
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@classmethod
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def parse_literal(cls, node, _variables=None):
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if not isinstance(node, StringValueNode):
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raise GraphQLError(
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f"Date cannot represent non-string value: {print_ast(node)}"
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)
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return cls.parse_value(node.value)
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@staticmethod
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def parse_value(value):
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if isinstance(value, datetime.date):
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return value
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if not isinstance(value, str):
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raise GraphQLError(f"Date cannot represent non-string value: {repr(value)}")
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try:
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return datetime.date.fromisoformat(value)
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except ValueError:
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raise GraphQLError(f"Date cannot represent value: {repr(value)}")
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class DateTime(Scalar):
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"""
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The `DateTime` scalar type represents a DateTime
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value as specified by
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[iso8601](https://en.wikipedia.org/wiki/ISO_8601).
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"""
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@staticmethod
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def serialize(dt):
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if not isinstance(dt, (datetime.datetime, datetime.date)):
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raise GraphQLError(f"DateTime cannot represent value: {repr(dt)}")
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return dt.isoformat()
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@classmethod
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def parse_literal(cls, node, _variables=None):
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if not isinstance(node, StringValueNode):
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raise GraphQLError(
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f"DateTime cannot represent non-string value: {print_ast(node)}"
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)
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return cls.parse_value(node.value)
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@staticmethod
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def parse_value(value):
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if isinstance(value, datetime.datetime):
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return value
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if not isinstance(value, str):
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raise GraphQLError(
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f"DateTime cannot represent non-string value: {repr(value)}"
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)
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try:
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return datetime.datetime.fromisoformat(value)
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except ValueError:
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raise GraphQLError(f"DateTime cannot represent value: {repr(value)}")
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class Time(Scalar):
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"""
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The `Time` scalar type represents a Time value as
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specified by
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[iso8601](https://en.wikipedia.org/wiki/ISO_8601).
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"""
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@staticmethod
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def serialize(time):
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if not isinstance(time, datetime.time):
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raise GraphQLError(f"Time cannot represent value: {repr(time)}")
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return time.isoformat()
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@classmethod
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def parse_literal(cls, node, _variables=None):
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if not isinstance(node, StringValueNode):
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raise GraphQLError(
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f"Time cannot represent non-string value: {print_ast(node)}"
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)
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return cls.parse_value(node.value)
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@classmethod
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def parse_value(cls, value):
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if isinstance(value, datetime.time):
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return value
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if not isinstance(value, str):
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raise GraphQLError(f"Time cannot represent non-string value: {repr(value)}")
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try:
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return datetime.time.fromisoformat(value)
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except ValueError:
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raise GraphQLError(f"Time cannot represent value: {repr(value)}")
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