1c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant//===----------------------------------------------------------------------===// 2c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 3c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// The LLVM Compiler Infrastructure 4c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 8c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant//===----------------------------------------------------------------------===// 9c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 10c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// <functional> 11c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 12c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// class function<R(ArgTypes...)> 13c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 14c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// R operator()(ArgTypes... args) const 15c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 16c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <functional> 17c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <cassert> 18c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 19c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 0 args, return int 20c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 21c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantint count = 0; 22c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 23c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantint f_int_0() 24c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 25c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant return 3; 26c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant} 27c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 28c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct A_int_0 29c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 30c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant int operator()() {return 4;} 31c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant}; 32c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 33c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantvoid 34c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnanttest_int_0() 35c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 36c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant // function 37c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant { 38c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant std::function<int ()> r1(f_int_0); 39c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(r1() == 3); 40c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant } 41c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant // function pointer 42c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant { 43c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant int (*fp)() = f_int_0; 44c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant std::function<int ()> r1(fp); 45c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(r1() == 3); 46c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant } 47c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant // functor 48c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant { 49c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant A_int_0 a0; 50c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant std::function<int ()> r1(a0); 51c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(r1() == 4); 52c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant } 53c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant} 54c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 55c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantint main() 56c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 57c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant test_int_0(); 58c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant} 59