module RSpec::Matchers::DSL

def define(name, &declarations)
  matcher_template = RSpec::Matchers::DSL::Matcher.new(name, &declarations)
  define_method name do |*expected|
    matcher = matcher_template.for_expected(*expected)
    @matcher_execution_context ||= self
    matcher.instance_variable_set(:@matcher_execution_context, @matcher_execution_context)
    matcher
  end
end