ceph/src/boost/libs/local_function/test/add_this_seq.cpp

   1
   2 // Copyright (C) 2009-2012 Lorenzo Caminiti
   3 // Distributed under the Boost Software License, Version 1.0
   4 // (see accompanying file LICENSE_1_0.txt or a copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6 // Home at http://www.boost.org/libs/local_function
   7
   8 #include <boost/local_function.hpp>
   9 #include <boost/typeof/typeof.hpp>
  10 #include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
  11 #include <boost/detail/lightweight_test.hpp>
  12 #include <vector>
  13 #include <algorithm>
  14
  15 struct adder;
  16 BOOST_TYPEOF_REGISTER_TYPE(adder) // Register before `bind this_` below.
  17
  18 struct adder {
  19     adder() : sum_(0) {}
  20
  21     int sum(const std::vector<int>& nums, const int factor = 10) {
  22
  23         void BOOST_LOCAL_FUNCTION( (const bind factor) (bind this_)
  24                 (int num) ) {
  25             this_->sum_ += factor * num;
  26         } BOOST_LOCAL_FUNCTION_NAME(add)
  27
  28         std::for_each(nums.begin(), nums.end(), add);
  29         return sum_;
  30     }
  31
  32 private:
  33     int sum_;
  34 };
  35
  36 int main(void) {
  37     std::vector<int> v(3);
  38     v[0] = 1; v[1] = 2; v[2] = 3;
  39
  40     BOOST_TEST(adder().sum(v) == 60);
  41     return boost::report_errors();
  42 }
  43