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# frozen_string_literal: true
module GraphQL
class Schema
# Represents a non null type in the schema.
# Wraps a {Schema::Member} when it is required.
# @see {Schema::Member::TypeSystemHelpers#to_non_null_type}
class NonNull < GraphQL::Schema::Wrapper
include Schema::Member::ValidatesInput
# @return [GraphQL::TypeKinds::NON_NULL]
def kind
GraphQL::TypeKinds::NON_NULL
end
# @return [true]
def non_null?
true
end
# @return [Boolean] True if this type wraps a list type
def list?
@of_type.list?
end
def to_type_signature
"#{@of_type.to_type_signature}!"
end
def inspect
"#<#{self.class.name} @of_type=#{@of_type.inspect}>"
end
def validate_input(value, ctx, max_errors: nil)
if value.nil?
result = GraphQL::Query::InputValidationResult.new
result.add_problem("Expected value to not be null")
result
else
of_type.validate_input(value, ctx, max_errors: max_errors)
end
end
# This is for introspection, where it's expected the name will be `null`
def graphql_name
nil
end
def coerce_input(value, ctx)
# `.validate_input` above is used for variables, but this method is used for arguments
if value.nil?
raise GraphQL::ExecutionError, "`null` is not a valid input for `#{to_type_signature}`, please provide a value for this argument."
end
of_type.coerce_input(value, ctx)
end
def coerce_result(value, ctx)
of_type.coerce_result(value, ctx)
end
# This is for implementing introspection
def description
nil
end
end
end
end
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