1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
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10 ** This file may be used under the terms of the GNU Lesser General Public
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21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
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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);