//===----------------------------------------------------------------------===//
|
//
|
// 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.
|
//
|
//===----------------------------------------------------------------------===//
|
|
// UNSUPPORTED: c++98, c++03
|
|
// <forward_list>
|
|
// template <class... Args> reference emplace_front(Args&&... args);
|
// return type is 'reference' in C++17; 'void' before
|
|
#include <forward_list>
|
#include <cassert>
|
|
#include "test_macros.h"
|
|
#include "../../../Emplaceable.h"
|
#include "min_allocator.h"
|
|
int main()
|
{
|
{
|
typedef Emplaceable T;
|
typedef std::forward_list<T> C;
|
C c;
|
#if TEST_STD_VER > 14
|
T& r1 = c.emplace_front();
|
assert(c.front() == Emplaceable());
|
assert(&r1 == &c.front());
|
assert(distance(c.begin(), c.end()) == 1);
|
T& r2 = c.emplace_front(1, 2.5);
|
assert(c.front() == Emplaceable(1, 2.5));
|
assert(&r2 == &c.front());
|
#else
|
c.emplace_front();
|
assert(c.front() == Emplaceable());
|
assert(distance(c.begin(), c.end()) == 1);
|
c.emplace_front(1, 2.5);
|
assert(c.front() == Emplaceable(1, 2.5));
|
#endif
|
assert(*next(c.begin()) == Emplaceable());
|
assert(distance(c.begin(), c.end()) == 2);
|
}
|
{
|
typedef Emplaceable T;
|
typedef std::forward_list<T, min_allocator<T>> C;
|
C c;
|
#if TEST_STD_VER > 14
|
T& r1 = c.emplace_front();
|
assert(c.front() == Emplaceable());
|
assert(&r1 == &c.front());
|
assert(distance(c.begin(), c.end()) == 1);
|
T& r2 = c.emplace_front(1, 2.5);
|
assert(c.front() == Emplaceable(1, 2.5));
|
assert(&r2 == &c.front());
|
#else
|
c.emplace_front();
|
assert(c.front() == Emplaceable());
|
assert(distance(c.begin(), c.end()) == 1);
|
c.emplace_front(1, 2.5);
|
assert(c.front() == Emplaceable(1, 2.5));
|
#endif
|
assert(*next(c.begin()) == Emplaceable());
|
assert(distance(c.begin(), c.end()) == 2);
|
}
|
}
|