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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "test_macros.h"
#include <string>
#include <cassert>
#include <type_traits>
// <string>
// template <class stateT>
// class fpos;
template<class T, class = void>
struct is_equality_comparable : std::false_type { };
template<class T>
struct is_equality_comparable
<T, typename std::enable_if<true, decltype(std::declval<T const&>() == std::declval<T const&>(),
(void)0)>::type
> : std::true_type { };
template<class T>
void test_traits()
{
static_assert(std::is_default_constructible <std::fpos<T> >::value, "");
static_assert(std::is_copy_constructible <std::fpos<T> >::value, "");
static_assert(std::is_copy_assignable <std::fpos<T> >::value, "");
static_assert(std::is_destructible <std::fpos<T> >::value, "");
static_assert(is_equality_comparable <std::fpos<T> >::value, "");
static_assert(std::is_trivially_copy_constructible<T>::value ==
std::is_trivially_copy_constructible<std::fpos<T> >::value, "");
static_assert(std::is_trivially_copy_assignable<T>::value ==
std::is_trivially_copy_assignable<std::fpos<T> >::value, "");
static_assert(std::is_trivially_destructible<T>::value ==
std::is_trivially_destructible<std::fpos<T> >::value, "");
}
struct Foo { };
int main(int, char**)
{
test_traits<std::mbstate_t>();
test_traits<int>();
test_traits<Foo>();
// Position type requirements table 106 (in order):
std::streampos p1(42);
std::streamoff o1(p1);
{
assert(o1 == 42);
}
{
std::streampos p2(42);
std::streampos q1(43);
std::streampos const p3(44);
std::streampos const q2(45);
assert(p2 != q1);
assert(p3 != q2);
assert(p2 != q2);
assert(p3 != q1);
}
{
std::streampos p2 = p1 + o1;
assert(p2 == 84);
}
{
std::streampos& p2 = p1 += o1;
assert(p2 == 84);
assert(p1 == 84);
}
{
std::streampos p2 = p1 - o1;
assert(p2 == 42);
}
{
std::streampos& p2 = p1 -= o1;
assert(p2 == 42);
assert(p1 == 42);
}
{
std::streampos p2 = o1 + p1;
assert(p2 == 84);
}
{
std::streampos q1(42);
std::streamoff o2 = q1 - p1;
assert(o2 == 0);
}
return 0;
}
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