ceph/src/boost/libs/yap/test/supplied_transforms.cpp

   1 // Copyright (C) 2019 Paul Keir
   2 //
   3 // Distributed under the Boost Software License, Version 1.0. (See
   4 // accompanying file LICENSE_1_0.txt or copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6 #include <boost/yap/yap.hpp>
   7
   8 #include <boost/core/lightweight_test.hpp>
   9
  10 namespace yap = boost::yap;
  11
  12 int main()
  13 {
  14     // Test replacements(), which returns a transform object
  15     {
  16         using namespace boost::yap::literals;
  17
  18         auto expr_in  = 1_p * 2_p;
  19
  20         auto xform    = yap::replacements(6,9);
  21         auto expr_out = yap::transform(expr_in,xform);
  22         auto result   = yap::evaluate(expr_out);
  23         BOOST_TEST(result == 54);
  24
  25 #ifndef _MSC_VER // Tsk, tsk.
  26         constexpr auto cxform    = yap::replacements(6);
  27         constexpr auto cexpr_out = yap::transform(1_p,cxform);
  28         constexpr auto cresult   = yap::evaluate(cexpr_out);
  29         static_assert(cresult == 6,"");
  30 #endif
  31     }
  32
  33     // Test evaluation(), which returns a transform object
  34     {
  35         using namespace boost::yap::literals;
  36
  37         auto expr_in  = 1_p * 2_p;
  38
  39         auto xform    = yap::evaluation(7,10);
  40         auto result   = yap::transform(expr_in,xform);
  41         BOOST_TEST(result == 70);
  42
  43 #ifndef _MSC_VER // Tsk, tsk.
  44         constexpr auto cxform    = yap::evaluation(7);
  45         constexpr auto cresult   = yap::transform(1_p,cxform);
  46         static_assert(cresult == 7,"");
  47 #endif
  48     }
  49
  50     // Test replace_placeholders(), which returns an expression
  51     {
  52         using namespace boost::yap::literals;
  53
  54         auto expr_in  = 1_p * 2_p;
  55
  56         auto expr_out = yap::replace_placeholders(expr_in,8,11);
  57         auto result   = yap::evaluate(expr_out);
  58         BOOST_TEST(result == 88);
  59
  60 #ifndef _MSC_VER // Tsk, tsk.
  61         constexpr auto cexpr_out = yap::replace_placeholders(1_p,8);
  62         constexpr auto cresult   = yap::evaluate(cexpr_out);
  63         static_assert(cresult == 8,"");
  64 #endif
  65     }
  66
  67     return boost::report_errors();
  68 }
  69