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# frozen_string_literal: true
require_relative 'base_inheritable'
module Grape
module Util
class StackableValues < BaseInheritable
# Even if there is no value, an empty array will be returned.
def [](name)
inherited_value = inherited_values[name]
new_value = new_values[name]
return new_value || [] unless inherited_value
concat_values(inherited_value, new_value)
end
def []=(name, value)
new_values[name] ||= []
new_values[name].push value
end
def to_hash
keys.each_with_object({}) do |key, result|
result[key] = self[key]
end
end
protected
def concat_values(inherited_value, new_value)
return inherited_value unless new_value
[].tap do |value|
value.concat(inherited_value)
value.concat(new_value)
end
end
end
end
end
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