Cutelee  6.1.0
cycle.h
1 /*
2  This file is part of the Cutelee template system.
3 
4  Copyright (c) 2009,2010 Stephen Kelly <steveire@gmail.com>
5 
6  This library is free software; you can redistribute it and/or
7  modify it under the terms of the GNU Lesser General Public
8  License as published by the Free Software Foundation; either version
9  2.1 of the Licence, or (at your option) any later version.
10 
11  This library is distributed in the hope that it will be useful,
12  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  Lesser General Public License for more details.
15 
16  You should have received a copy of the GNU Lesser General Public
17  License along with this library. If not, see <http://www.gnu.org/licenses/>.
18 
19 */
20 
21 #ifndef CYCLENODE_H
22 #define CYCLENODE_H
23 
24 #include "node.h"
25 
26 using namespace Cutelee;
27 
29 {
30  Q_OBJECT
31 public:
33 
34  Node *getNode(const QString &tagContent, Parser *p) const override;
35 };
36 
40 template <typename T> class RingIterator
41 {
42 public:
43  RingIterator<T>() {}
44 
45  RingIterator<T>(const QList<T> &list)
46  : m_begin(list.constBegin()), m_it(list.constBegin()),
47  m_end(list.constEnd())
48  {
49  Q_ASSERT(!list.isEmpty());
50  }
51 
56  T next()
57  {
58  Q_ASSERT(m_it != m_end);
59 
60  const T t = *m_it++;
61  if (m_it == m_end)
62  m_it = m_begin;
63  return t;
64  }
65 
66 private:
67  typename QList<T>::const_iterator m_begin;
68  typename QList<T>::const_iterator m_it;
69  typename QList<T>::const_iterator m_end;
70 };
71 
73 
74 Q_DECLARE_METATYPE(FilterExpressionRotator)
75 
76 class CycleNode : public Node
77 {
78  Q_OBJECT
79 public:
80  CycleNode(const QList<FilterExpression> &list, const QString &name,
81  QObject *parent = {});
82 
83  void render(OutputStream *stream, Context *c) const override;
84 
85 private:
86  const QList<FilterExpression> m_list;
87  FilterExpressionRotator m_variableIterator;
88  const QString m_name;
89 };
90 
91 #endif
Base class for all NodeFactories.
Definition: node.h:300
The Context class holds the context to render a Template with.
Definition: context.h:119
Base class for all nodes.
Definition: node.h:78
The OutputStream class is used to render templates to a QTextStream.
Definition: outputstream.h:81
The Parser class processes a string template into a tree of nodes.
Definition: parser.h:49
T next()
Definition: cycle.h:56
The Cutelee namespace holds all public Cutelee API.
Definition: Mainpage.dox:8