module CloudSesame
  module Query
    module AST
      module Abstract
        class SingleExpressionOperator < Operator

          DETAILED = false

          attr_accessor :child

          def <<(object)
            self.child = object
          end

          def applied(included = true)
            child.applied(included)
          end

          def compile(_detailed = nil)
            if child && (compiled = child.compile operator_detailed) && !compiled.empty?
              "(#{ symbol  }#{ boost } #{ compiled })"
            end
          end

          def is_for(field, options = {})
            child.is_for field, options if child
          end

          private

          def operator_detailed
            self.class::DETAILED
          end

        end
      end
    end
  end
end