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Revert Add <optional>. Will recommit with better commit message

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@283978 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2016-10-12 06:48:31 +00:00
parent fbc80168bb
commit ead5d404cc
86 changed files with 55 additions and 8467 deletions
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68
test/std/utilities/optional/optional.object/optional.object.observe/value_or.pass.cpp
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@@ -1,68 +0,0 @@
//===----------------------------------------------------------------------===//
//
// 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, c++11, c++14
// <optional>
// template <class U> T optional<T>::value_or(U&& v) &&;
#include <optional>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
using std::optional;
using std::in_place_t;
using std::in_place;
struct Y
{
int i_;
Y(int i) : i_(i) {}
};
struct X
{
int i_;
X(int i) : i_(i) {}
X(X&& x) : i_(x.i_) {x.i_ = 0;}
X(const Y& y) : i_(y.i_) {}
X(Y&& y) : i_(y.i_+1) {}
friend constexpr bool operator==(const X& x, const X& y)
{return x.i_ == y.i_;}
};
int main()
{
{
optional<X> opt(in_place, 2);
Y y(3);
assert(std::move(opt).value_or(y) == 2);
assert(*opt == 0);
}
{
optional<X> opt(in_place, 2);
assert(std::move(opt).value_or(Y(3)) == 2);
assert(*opt == 0);
}
{
optional<X> opt;
Y y(3);
assert(std::move(opt).value_or(y) == 3);
assert(!opt);
}
{
optional<X> opt;
assert(std::move(opt).value_or(Y(3)) == 4);
assert(!opt);
}
}