ceph/src/boost/libs/phoenix/test/scope/lambda_tests1b2p.cpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2007 Joel de Guzman
   3     Copyright (c) 2014      John Fletcher
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8 #include <iostream>
   9 #include <cmath>
  10 #include <algorithm>
  11 #include <vector>
  12
  13 #include <typeinfo>
  14
  15 #include <boost/detail/lightweight_test.hpp>
  16 #include <boost/phoenix/core.hpp>
  17 #include <boost/phoenix/operator.hpp>
  18 #include <boost/phoenix/function.hpp>
  19 //#include <boost/phoenix/bind.hpp>
  20 #include <boost/phoenix/scope.hpp>
  21
  22 struct zzz {};
  23
  24 int
  25 main()
  26 {
  27     using boost::phoenix::lambda;
  28     using boost::phoenix::let;
  29     using boost::phoenix::ref;
  30     using boost::phoenix::val;
  31     using boost::phoenix::arg_names::_1;
  32     //using boost::phoenix::arg_names::_2;
  33     using boost::phoenix::local_names::_a;
  34     //using boost::phoenix::local_names::_b;
  35     //    using boost::phoenix::placeholders::arg1;
  36
  37     /*
  38     {
  39         int x = 1;
  40         long x2 = 2;
  41         short x3 = 3;
  42         char const* y = "hello";
  43         zzz z;
  44
  45         BOOST_TEST(lambda[_1](x)(y) == y);
  46         BOOST_TEST(lambda(_a = _1)[_a](x)(y) == x);
  47         BOOST_TEST(lambda(_a = _1)[lambda[_a]](x)(y)(z) == x);
  48         BOOST_TEST(lambda(_a = _1)[lambda[_a + _1]](x)(y)(x) == 2);
  49         BOOST_TEST(lambda(_a = _1)[lambda(_b = _1)[_a + _b + _1]](x)(x2)(x3) == 6);
  50     }
  51     */
  52     {
  53         int x = 1, y = 10;
  54         BOOST_TEST(
  55             (_1 + _1 + lambda[_1 + 2])(x)(y) == 1+1+10+2
  56         );
  57     }
  58     /*
  59     {
  60         int x = 1, y = 10;
  61         BOOST_TEST(
  62         (
  63                 _1 +
  64                 lambda(_a = _1)
  65                 [
  66                     _a + lambda[_a + 2]
  67                 ]
  68             )
  69             (x)(y)(y) == 1+1+1+2
  70         );
  71     }
  72     */
  73     return boost::report_errors();
  74 }