class Spec::Expectations::ExpectationMatcherHandler

def handle_matcher(actual, matcher, &block)
  ::Spec::Matchers.last_should = "should"
  return Spec::Matchers::PositiveOperatorMatcher.new(actual) if matcher.nil?
  unless matcher.respond_to?(:matches?)
    raise InvalidMatcherError, "Expected a matcher, got #{matcher.inspect}."
  end
  
  match = matcher.matches?(actual, &block)
  ::Spec::Matchers.last_matcher = matcher
  Spec::Expectations.fail_with(matcher.failure_message) unless match
  match
end