1 /****************************************************************************
3 ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia. For licensing terms and
14 ** conditions see http://qt.digia.com/licensing. For further information
15 ** use the contact form at http://qt.digia.com/contact-us.
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 2.1 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 2.1 requirements
23 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
25 ** In addition, as a special exception, Digia gives you certain additional
26 ** rights. These rights are described in the Digia Qt LGPL Exception
27 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
29 ** GNU General Public License Usage
30 ** Alternatively, this file may be used under the terms of the GNU
31 ** General Public License version 3.0 as published by the Free Software
32 ** Foundation and appearing in the file LICENSE.GPL included in the
33 ** packaging of this file. Please review the following information to
34 ** ensure the GNU General Public License version 3.0 requirements will be
35 ** met: http://www.gnu.org/copyleft/gpl.html.
40 ****************************************************************************/
42 #include "qcommonsequencetypes_p.h"
43 #include "qatomicstring_p.h"
45 #include "qsimplecontentconstructor_p.h"
49 using namespace QPatternist;
51 SimpleContentConstructor::SimpleContentConstructor(const Expression::Ptr &operand) : SingleContainer(operand)
55 Item SimpleContentConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const
57 const Item::Iterator::Ptr it(m_operand->evaluateSequence(context));
58 Item next(it->next());
63 result = next.stringValue();
71 result += QLatin1Char(' ');
72 result += next.stringValue();
76 return AtomicString::fromValue(result);
79 Expression::Ptr SimpleContentConstructor::compress(const StaticContext::Ptr &context)
81 const Expression::Ptr me(SingleContainer::compress(context));
85 /* Optimization: if we will evaluate to a single string, we're not
87 if(CommonSequenceTypes::ExactlyOneString->matches(m_operand->staticType()))
94 SequenceType::List SimpleContentConstructor::expectedOperandTypes() const
96 SequenceType::List result;
97 result.append(CommonSequenceTypes::ZeroOrMoreAtomicTypes);
101 SequenceType::Ptr SimpleContentConstructor::staticType() const
103 if(m_operand->staticType()->cardinality().allowsEmpty())
104 return CommonSequenceTypes::ZeroOrOneString;
106 return CommonSequenceTypes::ExactlyOneString;
109 ExpressionVisitorResult::Ptr SimpleContentConstructor::accept(const ExpressionVisitor::Ptr &visitor) const
111 return visitor->visit(this);