forked from STI/Astroport.ONE
38 lines
1.2 KiB
Python
38 lines
1.2 KiB
Python
from operator import attrgetter
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from typing import Any, Collection
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from ...error import GraphQLError
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from ...language import ArgumentNode, DirectiveNode, FieldNode
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from ...pyutils import group_by
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from . import ASTValidationRule
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__all__ = ["UniqueArgumentNamesRule"]
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class UniqueArgumentNamesRule(ASTValidationRule):
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"""Unique argument names
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A GraphQL field or directive is only valid if all supplied arguments are uniquely
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named.
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See https://spec.graphql.org/draft/#sec-Argument-Names
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"""
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def enter_field(self, node: FieldNode, *_args: Any) -> None:
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self.check_arg_uniqueness(node.arguments)
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def enter_directive(self, node: DirectiveNode, *args: Any) -> None:
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self.check_arg_uniqueness(node.arguments)
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def check_arg_uniqueness(self, argument_nodes: Collection[ArgumentNode]) -> None:
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seen_args = group_by(argument_nodes, attrgetter("name.value"))
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for arg_name, arg_nodes in seen_args.items():
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if len(arg_nodes) > 1:
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self.report_error(
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GraphQLError(
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f"There can be only one argument named '{arg_name}'.",
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[node.name for node in arg_nodes],
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)
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)
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