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// { dg-options "-std=gnu++14" }
// { dg-do run }
// Copyright (C) 2013-2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a moved_to of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <experimental/optional>
#include <testsuite_hooks.h>
#include <vector>
#include <string>
struct tracker
{
tracker(int value) : value(value) { ++count; }
~tracker() { --count; }
tracker(tracker const& other) : value(other.value) { ++count; }
tracker(tracker&& other) : value(other.value)
{
other.value = -1;
++count;
}
tracker& operator=(tracker const&) = default;
tracker& operator=(tracker&&) = default;
int value;
static int count;
};
int tracker::count = 0;
struct exception { };
struct throwing_construction
{
explicit throwing_construction(bool propagate) : propagate(propagate) { }
throwing_construction(throwing_construction const& other)
: propagate(other.propagate)
{
if(propagate)
throw exception {};
}
bool propagate;
};
int main()
{
// [20.5.4.1] Constructors
{
auto i = 0x1234ABCD;
std::experimental::optional<long> o { i };
VERIFY( o );
VERIFY( *o == 0x1234ABCD );
VERIFY( i == 0x1234ABCD );
}
{
auto i = 0x1234ABCD;
std::experimental::optional<long> o = i;
VERIFY( o );
VERIFY( *o == 0x1234ABCD );
VERIFY( i == 0x1234ABCD );
}
{
auto i = 0x1234ABCD;
std::experimental::optional<long> o = { i };
VERIFY( o );
VERIFY( *o == 0x1234ABCD );
VERIFY( i == 0x1234ABCD );
}
{
auto i = 0x1234ABCD;
std::experimental::optional<long> o { std::move(i) };
VERIFY( o );
VERIFY( *o == 0x1234ABCD );
VERIFY( i == 0x1234ABCD );
}
{
auto i = 0x1234ABCD;
std::experimental::optional<long> o = std::move(i);
VERIFY( o );
VERIFY( *o == 0x1234ABCD );
VERIFY( i == 0x1234ABCD );
}
{
auto i = 0x1234ABCD;
std::experimental::optional<long> o = { std::move(i) };
VERIFY( o );
VERIFY( *o == 0x1234ABCD );
VERIFY( i == 0x1234ABCD );
}
{
std::vector<int> v = { 0, 1, 2, 3, 4, 5 };
std::experimental::optional<std::vector<int>> o { v };
VERIFY( !v.empty() );
VERIFY( o->size() == 6 );
}
{
std::vector<int> v = { 0, 1, 2, 3, 4, 5 };
std::experimental::optional<std::vector<int>> o = v;
VERIFY( !v.empty() );
VERIFY( o->size() == 6 );
}
{
std::vector<int> v = { 0, 1, 2, 3, 4, 5 };
std::experimental::optional<std::vector<int>> o { v };
VERIFY( !v.empty() );
VERIFY( o->size() == 6 );
}
{
std::vector<int> v = { 0, 1, 2, 3, 4, 5 };
std::experimental::optional<std::vector<int>> o { std::move(v) };
VERIFY( v.empty() );
VERIFY( o->size() == 6 );
}
{
std::vector<int> v = { 0, 1, 2, 3, 4, 5 };
std::experimental::optional<std::vector<int>> o = std::move(v);
VERIFY( v.empty() );
VERIFY( o->size() == 6 );
}
{
std::vector<int> v = { 0, 1, 2, 3, 4, 5 };
std::experimental::optional<std::vector<int>> o { std::move(v) };
VERIFY( v.empty() );
VERIFY( o->size() == 6 );
}
{
tracker t { 333 };
std::experimental::optional<tracker> o = t;
VERIFY( o->value == 333 );
VERIFY( tracker::count == 2 );
VERIFY( t.value == 333 );
}
{
tracker t { 333 };
std::experimental::optional<tracker> o = std::move(t);
VERIFY( o->value == 333 );
VERIFY( tracker::count == 2 );
VERIFY( t.value == -1 );
}
enum outcome { nothrow, caught, bad_catch };
{
outcome result = nothrow;
throwing_construction t { false };
try
{
std::experimental::optional<throwing_construction> o { t };
}
catch(exception const&)
{ result = caught; }
catch(...)
{ result = bad_catch; }
VERIFY( result == nothrow );
}
{
outcome result = nothrow;
throwing_construction t { true };
try
{
std::experimental::optional<throwing_construction> o { t };
}
catch(exception const&)
{ result = caught; }
catch(...)
{ result = bad_catch; }
VERIFY( result == caught );
}
{
outcome result = nothrow;
throwing_construction t { false };
try
{
std::experimental::optional<throwing_construction> o { std::move(t) };
}
catch(exception const&)
{ result = caught; }
catch(...)
{ result = bad_catch; }
VERIFY( result == nothrow );
}
{
outcome result = nothrow;
throwing_construction t { true };
try
{
std::experimental::optional<throwing_construction> o { std::move(t) };
}
catch(exception const&)
{ result = caught; }
catch(...)
{ result = bad_catch; }
VERIFY( result == caught );
}
{
std::experimental::optional<std::string> os = "foo";
struct X
{
explicit X(int) {}
X& operator=(int) {return *this;}
};
std::experimental::optional<X> ox{42};
std::experimental::optional<int> oi{42};
std::experimental::optional<X> ox2{oi};
std::experimental::optional<std::string> os2;
os2 = "foo";
std::experimental::optional<X> ox3;
ox3 = 42;
std::experimental::optional<X> ox4;
ox4 = oi;
}
}
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