module RSpec::Mocks::Syntax

def self.enable_should(syntax_host = default_should_syntax_host)
  return if should_enabled?(syntax_host)
  syntax_host.class_eval do
    def should_receive(message, opts={}, &block)
      opts[:expected_from] ||= caller(1)[0]
      ::RSpec::Mocks.expect_message(self, message.to_sym, opts, &block)
    end
    def should_not_receive(message, &block)
      opts = {:expected_from => caller(1)[0]}
      ::RSpec::Mocks.expect_message(self, message.to_sym, opts, &block).never
    end
    def stub(message_or_hash, opts={}, &block)
      ::RSpec::Mocks::Syntax.stub_object(self, message_or_hash, opts, &block)
    end
    def unstub(message)
      ::RSpec::Mocks.space.proxy_for(self).remove_stub(message)
    end
    def stub!(message_or_hash, opts={}, &block)
      ::RSpec.deprecate "stub!", :replacement => "stub"
      ::RSpec::Mocks::Syntax.stub_object(self, message_or_hash, opts, &block)
    end
    def unstub!(message)
      ::RSpec.deprecate "unstub!", :replacement => "unstub"
      unstub(message)
    end
    def stub_chain(*chain, &blk)
      ::RSpec::Mocks::StubChain.stub_chain_on(self, *chain, &blk)
    end
    def as_null_object
      @_null_object = true
      ::RSpec::Mocks.proxy_for(self).as_null_object
    end
    def null_object?
      defined?(@_null_object)
    end
    def received_message?(message, *args, &block)
      ::RSpec::Mocks.proxy_for(self).received_message?(message, *args, &block)
    end
    unless Class.respond_to? :any_instance
      Class.class_eval do
        def any_instance
          ::RSpec::Mocks.any_instance_recorder_for(self)
        end
      end
    end
  end
end