fptr.cpp

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/*
 * Copyright (c) 2002 Shane Beasley
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include "fptr.hpp"
#include <iostream>

void f () { std::cout << "f()" << std::endl; }
struct C { void f () { std::cout << "C::f()" << std::endl; } };


int main () {
  {
    eloi::unchecked_fptr fp = &f;
    eloi::fptr_cast<void (*) ()>(fp)();
  }

  {
    eloi::unchecked_mem_fptr fp = &C::f;
    C obj;
    (obj .* eloi::fptr_cast<void (C::*) ()>(fp))();
  }

  {
    eloi::checked_fptr fp = &f;
    eloi::fptr_cast<void (*) ()>(fp)();
  }

  {
    eloi::checked_mem_fptr fp = &C::f;
    C obj;
    (obj .* eloi::fptr_cast<void (C::*) ()>(fp))();
  }

  try {
    eloi::checked_fptr fp = &f;
    eloi::fptr_cast<int (*) (int)>(fp)(5);
  }

  catch (const std::exception &e) {
    std::cout << "exception: " << e.what() << '\n';
  }
}