class RSpec::Matchers::BuiltIn::Compound

def match(_expected, actual)
  evaluator_klass = if supports_block_expectations? && Proc === actual
                      NestedEvaluator
                    elsif supports_value_expectations?
                      SequentialEvaluator
                    else
                      # Can't raise an ArgumentError in this context, as it's rescued
                      raise "Block and value matchers can't be combined in a compound expectation (#{matcher_1.description}, #{matcher_2.description})"
                    end
  @evaluator = evaluator_klass.new(actual, matcher_1, matcher_2)
end