ceph/src/boost/libs/spirit/classic/phoenix/example/fundamental/sample5.cpp

   1 /*=============================================================================
   2     Phoenix V1.2.1
   3     Copyright (c) 2001-2003 Joel de Guzman
   4
   5     Use, modification and distribution is subject to the Boost Software
   6     License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7     http://www.boost.org/LICENSE_1_0.txt)
   8 ==============================================================================*/
   9 #include <vector>
  10 #include <algorithm>
  11 #include <iostream>
  12 #include <boost/spirit/include/phoenix1_operators.hpp>
  13 #include <boost/spirit/include/phoenix1_primitives.hpp>
  14
  15 using namespace std;
  16 using namespace phoenix;
  17
  18 //////////////////////////////////
  19 template <int N>
  20 struct static_int {
  21
  22     template <typename TupleT>
  23     struct result { typedef int type; };
  24
  25     template <typename TupleT>
  26     int eval(TupleT const&) const { return N; }
  27 };
  28
  29 //////////////////////////////////
  30 template <int N>
  31 phoenix::actor<static_int<N> >
  32 int_const()
  33 {
  34     return static_int<N>();
  35 }
  36
  37 //////////////////////////////////
  38 int
  39 main()
  40 {
  41     cout << (int_const<5>() + int_const<6>())() << endl;
  42     return 0;
  43 }