text: //===----------------------------------------------------------------------===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is dual licensed under the MIT and the University of Illinois Open
  // Source Licenses. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  
  // Copyright (C) 2014 Vicente J. Botet Escriba
  //
  //  Distributed under the Boost Software License, Version 1.0. (See accompanying
  //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  
  // <boost/thread/detail/invoke.hpp>
  
  #include <boost/thread/detail/invoke.hpp>
  #include <boost/detail/lightweight_test.hpp>
  
  int count = 0;
  
  // 1 arg, return void
  
  void f_void_1(int i)
  {
      count += i;
  }
  
  struct A_void_1
  {
      void operator()(int i)
      {
          count += i;
      }
  
      void mem1() {++count;}
      void mem2() const {count += 2;}
  };
  
  void
  test_void_1()
  {
      int save_count = count;
      // function
      {
      boost::detail::invoke(f_void_1, 2);
      BOOST_TEST(count == save_count + 2);
      save_count = count;
      }
      // function pointer
      {
      void (*fp)(int) = f_void_1;
      boost::detail::invoke(fp, 3);
      BOOST_TEST(count == save_count+3);
      save_count = count;
      }
      // functor
      {
      A_void_1 a0;
  #if defined BOOST_THREAD_PROVIDES_INVOKE
      boost::detail::invoke(a0, 4);
      BOOST_TEST(count == save_count+4);
      save_count = count;
  #endif
      boost::detail::invoke<void>(a0, 4);
      BOOST_TEST(count == save_count+4);
      save_count = count;
      }
      // member function pointer
      {
  #if defined BOOST_THREAD_PROVIDES_INVOKE
      void (A_void_1::*fp)() = &A_void_1::mem1;
      boost::detail::invoke(fp, A_void_1());
      BOOST_TEST(count == save_count+1);
      save_count = count;
      //BUG
      boost::detail::invoke<void>(fp, A_void_1());
      BOOST_TEST(count == save_count+1);
      save_count = count;
  
  #endif
  #if defined BOOST_THREAD_PROVIDES_INVOKE
      A_void_1 a;
      boost::detail::invoke(fp, &a);
      BOOST_TEST(count == save_count+1);
      save_count = count;
      //BUG
      boost::detail::invoke<int>(fp, &a);
      BOOST_TEST(count == save_count+1);
      save_count = count;
  
  #endif
      }
      // const member function pointer
      {
      void (A_void_1::*fp)() const = &A_void_1::mem2;
      boost::detail::invoke(fp, A_void_1());
      BOOST_TEST(count == save_count+2);
      save_count = count;
      A_void_1 a;
      boost::detail::invoke(fp, &a);
      BOOST_TEST(count == save_count+2);
      save_count = count;
      }
  }
  
  // 1 arg, return int
  
  int f_int_1(int i)
  {
      return i + 1;
  }
  
  struct A_int_1
  {
      A_int_1() : data_(5) {}
      int operator()(int i)
      {
          return i - 1;
      }
  
      int mem1() {return 3;}
      int mem2() const {return 4;}
      int data_;
  };
  
  void
  test_int_1()
  {
      // function
      {
      BOOST_TEST(boost::detail::invoke(f_int_1, 2) == 3);
      }
      // function pointer
      {
      int (*fp)(int) = f_int_1;
      BOOST_TEST(boost::detail::invoke(fp, 3) == 4);
      }
      // functor
      {
  #if defined BOOST_THREAD_PROVIDES_INVOKE
      BOOST_TEST(boost::detail::invoke(A_int_1(), 4) == 3);
      BOOST_TEST(boost::detail::invoke<int>(A_int_1(), 4) == 3);
  #endif
      }
      // member function pointer
      {
  #if defined BOOST_THREAD_PROVIDES_INVOKE
      BOOST_TEST(boost::detail::invoke(&A_int_1::mem1, A_int_1()) == 3);
      BOOST_TEST(boost::detail::invoke<int>(&A_int_1::mem1, A_int_1()) == 3);
  #endif
  
      A_int_1 a;
      BOOST_TEST(boost::detail::invoke(&A_int_1::mem1, &a) == 3);
      }
      // const member function pointer
      {
      BOOST_TEST(boost::detail::invoke(&A_int_1::mem2, A_int_1()) == 4);
      A_int_1 a;
      BOOST_TEST(boost::detail::invoke(&A_int_1::mem2, &a) == 4);
      }
      // member data pointer
      {
  #if defined BOOST_THREAD_PROVIDES_INVOKE
      BOOST_TEST(boost::detail::invoke(&A_int_1::data_, A_int_1()) == 5);
      BOOST_TEST(boost::detail::invoke<int>(&A_int_1::data_, A_int_1()) == 5);
      A_int_1 a;
      BOOST_TEST(boost::detail::invoke(&A_int_1::data_, a) == 5);
      boost::detail::invoke(&A_int_1::data_, a) = 6;
      BOOST_TEST(boost::detail::invoke(&A_int_1::data_, a) == 6);
      BOOST_TEST(boost::detail::invoke(&A_int_1::data_, &a) == 6);
      boost::detail::invoke(&A_int_1::data_, &a) = 7;
      BOOST_TEST(boost::detail::invoke(&A_int_1::data_, &a) == 7);
  #endif
      }
  }
  
  // 2 arg, return void
  
  void f_void_2(int i, int j)
  {
      count += i+j;
  }
  
  struct A_void_2
  {
      void operator()(int i, int j)
      {
          count += i+j;
      }
  
      void mem1(int i) {count += i;}
      void mem2(int i) const {count += i;}
  };
  
  void
  test_void_2()
  {
      int save_count = count;
      // function
      {
      boost::detail::invoke(f_void_2, 2, 3);
      BOOST_TEST(count == save_count+5);
      save_count = count;
      }
      // member function pointer
      {
  #if defined BOOST_THREAD_PROVIDES_INVOKE
      boost::detail::invoke(&A_void_2::mem1, A_void_2(), 3);
      BOOST_TEST(count == save_count+3);
      save_count = count;
  
      boost::detail::invoke<void>(&A_void_2::mem1, A_void_2(), 3);
      BOOST_TEST(count == save_count+3);
      save_count = count;
  #endif
  
      }
  }
  
  int main()
  {
      test_void_1();
      test_int_1();
      test_void_2();
      return boost::report_errors();
  }
  