m-static.cc

模拟嵌入式硬件平台的软件源代码

// 2002-05-13

namespace __gnu_test
{
  enum 	region { oriental, egyptian, greek, etruscan, roman };

  // Test one.
  class gnu_obj_1
  {
  protected:
    typedef region antiquities;
    static const bool 	test = true;
    static const int 	key1 = 5;
    static long       	key2;

    static antiquities 	value;

  public:
    gnu_obj_1(antiquities a, long l) {}
  };

  const bool gnu_obj_1::test;
  const int gnu_obj_1::key1;
  long gnu_obj_1::key2 = 77;
  gnu_obj_1::antiquities gnu_obj_1::value = oriental;


  // Test two.
  template<typename T>
    class gnu_obj_2: public virtual gnu_obj_1
    {
    public:
      static antiquities	value_derived;
      
    public:
      gnu_obj_2(antiquities b): gnu_obj_1(oriental, 7) { }
    }; 

  template<typename T>
    typename gnu_obj_2<T>::antiquities gnu_obj_2<T>::value_derived = etruscan;

  // Test three.
  template<typename T>
    class gnu_obj_3
    {
    public:
      typedef region antiquities;
      static gnu_obj_2<int>   	data;
      
    public:
      gnu_obj_3(antiquities b) { }
    }; 

  template<typename T>
    gnu_obj_2<int> gnu_obj_3<T>::data(etruscan);
} 

// instantiate templates explicitly so their static members will exist
template class __gnu_test::gnu_obj_2<int>;
template class __gnu_test::gnu_obj_2<long>;
template class __gnu_test::gnu_obj_3<long>;

int main()
{
  using namespace __gnu_test;

  gnu_obj_1		test1(egyptian, 4589);
  gnu_obj_2<long>	test2(roman);
  gnu_obj_3<long>	test3(greek);

  return 0;
}