ceph/src/boost/libs/spirit/test/karma/regression_iterator.cpp

   1 //  Copyright (c) 2013 Louis Dionne
   2 //  Copyright (c) 2001-2013 Hartmut Kaiser
   3 //
   4 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #include <boost/config/warning_disable.hpp>
   8 #include <boost/detail/lightweight_test.hpp>
   9
  10 #include <boost/range/adaptor/transformed.hpp>
  11 #include <boost/spirit/include/karma.hpp>
  12
  13 #include <iostream>
  14
  15 // Note how the return is made by value instead of by reference.
  16 template <typename T> T identity(T const& t) { return t; }
  17
  18 template <typename Char, typename Expr, typename CopyExpr, typename CopyAttr
  19   , typename Delimiter, typename Attribute>
  20 bool test(Char const *expected,
  21     boost::spirit::karma::detail::format_manip<
  22         Expr, CopyExpr, CopyAttr, Delimiter, Attribute> const& fm)
  23 {
  24     std::ostringstream ostrm;
  25     ostrm << fm;
  26     return ostrm.good() && ostrm.str() == expected;
  27 }
  28
  29 int main()
  30 {
  31     namespace karma = boost::spirit::karma;
  32     namespace adaptors = boost::adaptors;
  33     int ints[] = {0, 1, 2, 3, 4};
  34
  35     BOOST_TEST((test("0 1 2 3 4",
  36         karma::format(karma::int_ % ' ',
  37             ints | adaptors::transformed(&identity<int>)))
  38     ));
  39
  40     return boost::report_errors();
  41 }
  42