1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard 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. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 103816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier// UNSUPPORTED: c++98, c++03 113816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <forward_list> 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 143816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier// template <class... Args> reference emplace_front(Args&&... args); 154e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow// return type is 'reference' in C++17; 'void' before 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <forward_list> 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 204e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow#include "test_macros.h" 214e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include "../../../Emplaceable.h" 23061d0cc4db18d17bf01ed14c5db0be098205bd47Marshall Clow#include "min_allocator.h" 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef Emplaceable T; 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant typedef std::forward_list<T> C; 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant C c; 314e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow#if TEST_STD_VER > 14 323816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier T& r1 = c.emplace_front(); 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c.front() == Emplaceable()); 343816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier assert(&r1 == &c.front()); 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(distance(c.begin(), c.end()) == 1); 363816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier T& r2 = c.emplace_front(1, 2.5); 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c.front() == Emplaceable(1, 2.5)); 383816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier assert(&r2 == &c.front()); 394e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow#else 404e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow c.emplace_front(); 414e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow assert(c.front() == Emplaceable()); 424e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow assert(distance(c.begin(), c.end()) == 1); 434e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow c.emplace_front(1, 2.5); 444e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow assert(c.front() == Emplaceable(1, 2.5)); 454e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow#endif 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(*next(c.begin()) == Emplaceable()); 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(distance(c.begin(), c.end()) == 2); 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 4981381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant { 5081381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant typedef Emplaceable T; 5181381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant typedef std::forward_list<T, min_allocator<T>> C; 5281381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant C c; 534e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow#if TEST_STD_VER > 14 543816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier T& r1 = c.emplace_front(); 5581381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant assert(c.front() == Emplaceable()); 563816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier assert(&r1 == &c.front()); 5781381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant assert(distance(c.begin(), c.end()) == 1); 583816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier T& r2 = c.emplace_front(1, 2.5); 5981381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant assert(c.front() == Emplaceable(1, 2.5)); 603816ef98b1665320bd5eba590c4906e9dbd070ccEric Fiselier assert(&r2 == &c.front()); 614e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow#else 624e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow c.emplace_front(); 634e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow assert(c.front() == Emplaceable()); 644e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow assert(distance(c.begin(), c.end()) == 1); 654e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow c.emplace_front(1, 2.5); 664e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow assert(c.front() == Emplaceable(1, 2.5)); 674e42dc97f3cf3e63ef3e6a23cada1970259eb7eaMarshall Clow#endif 6881381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant assert(*next(c.begin()) == Emplaceable()); 6981381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant assert(distance(c.begin(), c.end()) == 2); 7081381a932fbebb384adfe5c0116d45b37479efdeHoward Hinnant } 71bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 72