ceph/src/boost/libs/spirit/classic/phoenix/test/more_expressions_tests.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 <iostream>
  10 #include <boost/detail/lightweight_test.hpp>
  11
  12 #define PHOENIX_LIMIT 15
  13 #include <boost/spirit/include/phoenix1_primitives.hpp>
  14 #include <boost/spirit/include/phoenix1_composite.hpp>
  15 #include <boost/spirit/include/phoenix1_functions.hpp>
  16 #include <boost/spirit/include/phoenix1_operators.hpp>
  17
  18 using namespace phoenix;
  19 using namespace std;
  20
  21     ///////////////////////////////////////////////////////////////////////////////
  22     struct sqr_ {
  23
  24         template <typename ArgT>
  25         struct result { typedef ArgT type; };
  26
  27         template <typename ArgT>
  28         ArgT operator()(ArgT n) const { return n * n; }
  29     };
  30
  31     function<sqr_> sqr;
  32
  33     ///////////////////////////////////////////////////////////////////////////////
  34     struct adder_ {
  35
  36         template <typename Arg1T, typename Arg2T, typename ArgT3>
  37         struct result { typedef Arg1T type; };
  38
  39         template <typename Arg1T, typename Arg2T, typename ArgT3>
  40         Arg1T operator()(Arg1T a, Arg2T b, ArgT3 c) const { return a + b + c; }
  41     };
  42
  43     function<adder_> adder;
  44
  45 ///////////////////////////////////////////////////////////////////////////////
  46 int
  47 main()
  48 {
  49     int     i2 = 2, i = 4, i50 = 50, i10 = 10, i20 = 20, i100 = 100;
  50     double  d5 = 5, d10 = 10;
  51     string hello = "hello";
  52
  53 ///////////////////////////////////////////////////////////////////////////////
  54 //
  55 //  More complex expressions
  56 //
  57 ///////////////////////////////////////////////////////////////////////////////
  58     BOOST_TEST((10 - arg1)(i100) == (10 - i100));
  59     BOOST_TEST((20 - arg1)(i100) == (20 - i100));
  60     BOOST_TEST((arg1 - 10)(i100) == (i100 - 10));
  61     BOOST_TEST((arg1 - 20)(i100) == (i100 - 20));
  62     BOOST_TEST((arg1 - arg2)(i100, i50) == (i100 - i50));
  63     BOOST_TEST((arg1 - var(i))(i10) == (i10 - i));
  64     BOOST_TEST((arg1 + arg2 - arg3)(i100, i50, i20) == (i100 + i50 - i20));
  65     BOOST_TEST((sqr(arg1) + arg2 - arg3)(i100, i50, i20) == ((i100*i100) + i50 - i20));
  66
  67     int ii = i;
  68     BOOST_TEST((var(i) += arg1)(i2) == (ii += i2));
  69     BOOST_TEST((sqr(sqr(arg1)))(i100) == (i100*i100*i100*i100));
  70
  71
  72 #if 0   /*** SHOULD NOT COMPILE ***/
  73     (val(3) += arg1)(i100);
  74     (val(3) = 3)();
  75 #endif
  76
  77     BOOST_TEST(((adder(arg1, arg2, arg3) + arg2 - arg3)(i100, i50, i20)) == (i100 + i50 + i20) + i50 - i20);
  78     BOOST_TEST((adder(arg1, arg2, arg3)(i100, i50, i20)) == (i100 + i50 + i20));
  79     BOOST_TEST((sqr(sqr(sqr(sqr(arg1)))))(d10) == 1e16);
  80     BOOST_TEST((sqr(sqr(arg1)) / arg1 / arg1)(d5) == 25);
  81
  82     for (int j = 0; j < 20; ++j)
  83     {
  84         cout << (10 < arg1)(j);
  85         BOOST_TEST((10 < arg1)(j) == (10 < j));
  86     }
  87     cout << endl;
  88
  89     for (int k = 0; k < 20; ++k)
  90     {
  91         bool r = ((arg1 % 2 == 0) && (arg1 < 15))(k);
  92         cout << r;
  93         BOOST_TEST(r == ((k % 2 == 0) && (k < 15)));
  94     }
  95     cout << endl;
  96
  97 ///////////////////////////////////////////////////////////////////////////////
  98 //
  99 //  End asserts
 100 //
 101 ///////////////////////////////////////////////////////////////////////////////
 102
 103     return boost::report_errors();
 104 }