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3rdparty/boost_1_81_0/libs/python/test/implicit.cpp 1.03 KB
73ef4ff3   Hu Chunming   提交三方库
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  // Copyright David Abrahams 2002.
  // Distributed under the Boost Software License, Version 1.0. (See
  // accompanying file LICENSE_1_0.txt or copy at
  // http://www.boost.org/LICENSE_1_0.txt)
  #include <boost/python/class.hpp>
  #include <boost/python/implicit.hpp>
  #include <boost/python/module.hpp>
  #include <boost/python/def.hpp>
  #include "test_class.hpp"
  
  using namespace boost::python;
  
  typedef test_class<> X;
  
  int x_value(X const& x)
  {
      return x.value();
  }
  
  X make_x(int n) { return X(n); }
  
  
  // foo/bar -- a regression for a vc7 bug workaround
  struct bar {};
  struct foo
  {
      virtual ~foo() {}; // silence compiler warnings
      virtual void f() = 0;
      operator bar() const { return bar(); }
  };
  
  BOOST_PYTHON_MODULE(implicit_ext)
  {
      implicitly_convertible<foo,bar>();
      implicitly_convertible<int,X>();
      
      def("x_value", x_value);
      def("make_x", make_x);
  
      class_<X>("X", init<int>())
          .def("value", &X::value)
          .def("set", &X::set)
          ;
      
      implicitly_convertible<X,int>();
  }
  
  #include "module_tail.cpp"