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# frozen_string_literal: true
module GraphQL
module StaticValidation
module VariableNamesAreUnique
def on_operation_definition(node, parent)
var_defns = node.variables
if var_defns.any?
vars_by_name = Hash.new { |h, k| h[k] = [] }
var_defns.each { |v| vars_by_name[v.name] << v }
vars_by_name.each do |name, defns|
if defns.size > 1
add_error(GraphQL::StaticValidation::VariableNamesAreUniqueError.new(
"There can only be one variable named \"#{name}\"",
nodes: defns,
name: name
))
end
end
end
super
end
end
end
end
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