Cutelee  6.1.0
firstof.cpp
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 #include "firstof.h"
22 
23 #include "../lib/exception.h"
24 #include "parser.h"
25 #include "util.h"
26 
27 FirstOfNodeFactory::FirstOfNodeFactory() {}
28 
29 Node *FirstOfNodeFactory::getNode(const QString &tagContent, Parser *p) const
30 {
31  auto expr = smartSplit(tagContent);
32 
33  const auto tagName = expr.takeAt(0);
34 
35  if (expr.isEmpty()) {
36  throw Cutelee::Exception(
37  TagSyntaxError,
38  QStringLiteral("%1 expects at least one argument").arg(tagName));
39  }
40 
41  return new FirstOfNode(getFilterExpressionList(expr, p), p);
42 }
43 
44 FirstOfNode::FirstOfNode(const QList<FilterExpression> &list, QObject *parent)
45  : Node(parent), m_variableList(list)
46 {
47 }
48 
49 void FirstOfNode::render(OutputStream *stream, Context *c) const
50 {
51  for (const FilterExpression &fe : m_variableList) {
52  if (fe.isTrue(c)) {
53  fe.resolve(stream, c);
54  return;
55  }
56  }
57 }
QList< FilterExpression > getFilterExpressionList(const QStringList &list, Parser *p) const
Definition: node.cpp:192
Q_INVOKABLE QStringList smartSplit(const QString &str) const
Definition: node.cpp:202
The Context class holds the context to render a Template with.
Definition: context.h:119
An exception for use when implementing template tags.
Definition: exception.h:85
A FilterExpression object represents a filter expression in a template.
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
Node * getNode(const QString &tagContent, Parser *p) const override
Definition: firstof.cpp:29
void render(OutputStream *stream, Context *c) const override
Definition: firstof.cpp:49
Utility functions used throughout Cutelee.