1 /**********************************************************************
2  *
3  *   FreeDoko a Doppelkopf-Game
4  *
5  *   Copyright (C) 2001 – 2018 by Diether Knof and Borg Enders
6  *
7  *   This program is free software; you can redistribute it and/or
8  *   modify it under the terms of the GNU General Public License as
9  *   published by the Free Software Foundation; either version 2 of
10  *   the License, or (at your option) any later version.
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *   You can find this license in the file 'gpl.txt'.
17  *
18  *   You should have received a copy of the GNU General Public License
19  *   along with this program; if not, write to the Free Software
20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  *   MA  02111-1307  USA
22  *
23  *  Contact:
24  *    Diether Knof dknof@posteo.de
25  *
26  **********************************************************************/
27 
28 // included by trickpile.h
29 
30 #pragma once
31 
32 class TrickPile;
33 
34 class TrickPileIterator : public std::iterator<std::output_iterator_tag, Trick> {
35   friend class TrickPile;
36   public:
37   using iterator_category = std::forward_iterator_tag;
38   private:
39   TrickPileIterator() = delete;
40   TrickPileIterator(TrickPile& tricks, unsigned t);
41 
42   public:
43   Trick& operator*();
44   Trick const& operator*() const;
45   Trick* operator->();
46   Trick const* operator->() const;
47   TrickPileIterator& operator++();
48   bool operator!=(TrickPileIterator const& i) const;
49   private:
50   TrickPile* const tricks_ = nullptr;
51   size_t t_ = 0;
52 }; // TrickPileIterator
53 
54 class TrickPileConstIterator : public std::iterator<std::output_iterator_tag, Trick> {
55   friend class TrickPile;
56   public:
57   using iterator_category = std::forward_iterator_tag;
58   private:
59   TrickPileConstIterator() = delete;
60   TrickPileConstIterator(TrickPile const& tricks, unsigned t);
61 
62   public:
63   TrickPileConstIterator(TrickPileIterator i);
64   Trick const& operator*() const;
65   Trick const* operator->() const;
66   TrickPileConstIterator& operator++();
67   bool operator!=(TrickPileConstIterator const& i) const;
68   private:
69   TrickPile const* const tricks_ = nullptr;
70   size_t t_ = 0;
71 }; // TrickPileConstIterator
72