mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-19 18:46:30 +00:00
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
|
// { dg-options "-std=gnu++0x" }
|
||
|
|
// 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
|
||
|
|
//
|
||
|
|
// Copyright (C) 2005, 2009 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 copy of the GNU General Public License along
|
||
|
|
// with this library; see the file COPYING3. If not see
|
||
|
|
// <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
// 20.7.15 polymorphic function object wrapper
|
||
|
|
#include <functional>
|
||
|
|
#include <testsuite_hooks.h>
|
||
|
|
|
||
|
|
using namespace __gnu_test;
|
||
|
|
|
||
|
|
bool test __attribute__((unused)) = true;
|
||
|
|
|
||
|
|
struct secret {};
|
||
|
|
|
||
|
|
struct noncopyable_function_object_type
|
||
|
|
{
|
||
|
|
noncopyable_function_object_type(secret) {}
|
||
|
|
|
||
|
|
int operator()() const { return 42; }
|
||
|
|
int operator()() { return 17; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
noncopyable_function_object_type();
|
||
|
|
noncopyable_function_object_type(const noncopyable_function_object_type&);
|
||
|
|
void operator=(const noncopyable_function_object_type&);
|
||
|
|
};
|
||
|
|
|
||
|
|
// Put reference_wrappers into function<> wrappers
|
||
|
|
void test06()
|
||
|
|
{
|
||
|
|
using std::function;
|
||
|
|
using std::ref;
|
||
|
|
using std::cref;
|
||
|
|
|
||
|
|
secret password;
|
||
|
|
noncopyable_function_object_type x(password);
|
||
|
|
|
||
|
|
function<int()> f(ref(x));
|
||
|
|
VERIFY( f );
|
||
|
|
VERIFY( f() == 17 );
|
||
|
|
VERIFY( f.target_type() == typeid(noncopyable_function_object_type) );
|
||
|
|
VERIFY( f.target<noncopyable_function_object_type>() == &x );
|
||
|
|
|
||
|
|
function<int()> g = f;
|
||
|
|
VERIFY( g );
|
||
|
|
VERIFY( g() == 17 );
|
||
|
|
VERIFY( g.target_type() == typeid(noncopyable_function_object_type) );
|
||
|
|
VERIFY( g.target<noncopyable_function_object_type>() == &x );
|
||
|
|
|
||
|
|
function<int()> h = cref(x);
|
||
|
|
VERIFY( h );
|
||
|
|
VERIFY( h() == 42 );
|
||
|
|
VERIFY( h.target_type() == typeid(noncopyable_function_object_type) );
|
||
|
|
VERIFY( h.target<const noncopyable_function_object_type>() == &x );
|
||
|
|
VERIFY( h.target<const noncopyable_function_object_type>() == &x );
|
||
|
|
|
||
|
|
const function<int()>& hc = h;
|
||
|
|
VERIFY( h.target<noncopyable_function_object_type>() == 0 );
|
||
|
|
VERIFY( hc.target<noncopyable_function_object_type>() == &x );
|
||
|
|
}
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
test06();
|
||
|
|
return 0;
|
||
|
|
}
|