| // -*- C++ -*- |
| // Testing utilities for the rvalue reference. |
| // |
| // Copyright (C) 2005, 2007 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 2, 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 COPYING. If not, write to the Free |
| // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| // USA. |
| // |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| #ifndef _GLIBCXX_TESTSUITE_RVALREF_H |
| #define _GLIBCXX_TESTSUITE_RVALREF_H 1 |
| |
| #include <testsuite_hooks.h> |
| |
| namespace __gnu_test |
| { |
| |
| // This class is designed to test libstdc++'s template-based rvalue |
| // reference support. It should fail at compile-time if there is an attempt |
| // to copy it (although see note just below). |
| class rvalstruct |
| { |
| bool |
| operator=(const rvalstruct&); |
| |
| // Normally we don't define a copy constructor, as any use of it would |
| // show an inefficency. In some cases we know it will be aliased away |
| // by the compiler, but it still insists it is defined, so we provide |
| // a way of making it public but not giving a body, so any usage would |
| // instead fail at link-time. |
| #ifdef _GLIBCXX_TESTSUITE_ALLOW_RVALREF_ALIASING |
| public: |
| rvalstruct(const rvalstruct&); |
| #else |
| rvalstruct(const rvalstruct&); |
| |
| public: |
| #endif |
| int val; |
| bool valid; |
| |
| rvalstruct() : valid(false) |
| { } |
| |
| rvalstruct(int inval) : val(inval), valid(true) |
| { } |
| |
| rvalstruct& |
| operator=(int newval) |
| { |
| VERIFY(valid == false); |
| val = newval; |
| valid = true; |
| return *this; |
| } |
| |
| rvalstruct(rvalstruct&& in) |
| { |
| VERIFY(in.valid == true); |
| val = in.val; |
| in.valid = false; |
| valid = true; |
| } |
| |
| rvalstruct& |
| operator=(rvalstruct&& in) |
| { |
| VERIFY(in.valid == true); |
| val = in.val; |
| in.valid = false; |
| valid = true; |
| return *this; |
| } |
| }; |
| |
| bool |
| operator==(const rvalstruct& lhs, const rvalstruct& rhs) |
| { return lhs.val == rhs.val; } |
| |
| bool |
| operator<(const rvalstruct& lhs, const rvalstruct& rhs) |
| { return lhs.val < rhs.val; } |
| |
| void |
| swap(rvalstruct& lhs, rvalstruct& rhs) |
| { |
| VERIFY(lhs.valid && rhs.valid); |
| int temp = lhs.val; |
| lhs.val = rhs.val; |
| rhs.val = temp; |
| } |
| |
| // This is a moveable class which copies how many times it is copied. |
| // This is mainly of use in the containers, where the an element inserted |
| // into a container has to be copied once to get there, but we want to check |
| // nothing else is copied. |
| struct copycounter |
| { |
| static int copycount; |
| int val; |
| bool valid; |
| |
| copycounter() : val(0), valid(true) |
| { } |
| |
| copycounter(int inval) : val(inval), valid(true) |
| { } |
| |
| copycounter(const copycounter& in) : val(in.val), valid(true) |
| { |
| VERIFY(in.valid == true); |
| ++copycount; |
| } |
| |
| copycounter(copycounter&& in) |
| { |
| VERIFY(in.valid == true); |
| val = in.val; |
| in.valid = false; |
| valid = true; |
| } |
| |
| copycounter& |
| operator=(int newval) |
| { |
| val = newval; |
| valid = true; |
| return *this; |
| } |
| |
| bool |
| operator=(const copycounter& in) |
| { |
| VERIFY(in.valid == true); |
| ++copycount; |
| val = in.val; |
| valid = true; |
| return true; |
| } |
| |
| copycounter& |
| operator=(copycounter&& in) |
| { |
| VERIFY(in.valid == true); |
| val = in.val; |
| in.valid = false; |
| valid = true; |
| return *this; |
| } |
| |
| ~copycounter() |
| { valid = false; } |
| }; |
| |
| int copycounter::copycount = 0; |
| |
| bool |
| operator==(const copycounter& lhs, const copycounter& rhs) |
| { return lhs.val == rhs.val; } |
| |
| bool |
| operator<(const copycounter& lhs, const copycounter& rhs) |
| { return lhs.val < rhs.val; } |
| |
| void |
| swap(copycounter& lhs, copycounter& rhs) |
| { |
| VERIFY(lhs.valid && rhs.valid); |
| int temp = lhs.val; |
| lhs.val = rhs.val; |
| rhs.val = temp; |
| } |
| |
| } // namespace __gnu_test |
| |
| #endif // _GLIBCXX_TESTSUITE_TR1_H |