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Diffstat (limited to 'src/xmlpatterns/expr/qxsltsimplecontentconstructor.cpp')
| -rw-r--r-- | src/xmlpatterns/expr/qxsltsimplecontentconstructor.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/xmlpatterns/expr/qxsltsimplecontentconstructor.cpp b/src/xmlpatterns/expr/qxsltsimplecontentconstructor.cpp new file mode 100644 index 0000000..ef77c76 --- /dev/null +++ b/src/xmlpatterns/expr/qxsltsimplecontentconstructor.cpp @@ -0,0 +1,158 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtXmlPatterns module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qatomicstring_p.h" +#include "qcommonsequencetypes_p.h" + +#include "qxsltsimplecontentconstructor_p.h" + +QT_BEGIN_NAMESPACE + +using namespace QPatternist; + +XSLTSimpleContentConstructor::XSLTSimpleContentConstructor(const Expression::Ptr &source) : SimpleContentConstructor(source) +{ +} + +QString XSLTSimpleContentConstructor::processItem(const Item &item, + bool &discard, + bool &isText) +{ + if(item.isNode()) + { + isText = (item.asNode().kind() == QXmlNodeModelIndex::Text); + + if(isText) + { + const QString value(item.stringValue()); + + /* "1. Zero-length text nodes in the sequence are discarded." */ + discard = value.isEmpty(); + return value; + } + else + { + Item::Iterator::Ptr it(item.sequencedTypedValue()); /* Atomic values. */ + Item next(it->next()); + QString result; + + if(next) + result = next.stringValue(); + + next = it->next(); + + while(next) + { + result += next.stringValue(); + result += QLatin1Char(' '); + next = it->next(); + } + + return result; + } + } + else + { + discard = false; + isText = false; + return item.stringValue(); + } +} + +Item XSLTSimpleContentConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const +{ + const Item::Iterator::Ptr it(m_operand->evaluateSequence(context)); + + Item next(it->next()); + QString result; + + bool previousIsText = false; + bool discard; + + if(next) + { + const QString unit(processItem(next, discard, previousIsText)); + + if(!discard) + result = unit; + + next = it->next(); + } + else + return Item(); + + while(next) + { + bool currentIsText = false; + const QString unit(processItem(next, discard, currentIsText)); + + if(!discard) + { + /* "Adjacent text nodes in the sequence are merged into a single text + * node." */ + if(previousIsText && currentIsText) + ; + else + result += QLatin1Char(' '); + + result += unit; + } + + next = it->next(); + previousIsText = currentIsText; + } + + return AtomicString::fromValue(result); +} + +SequenceType::List XSLTSimpleContentConstructor::expectedOperandTypes() const +{ + SequenceType::List result; + result.append(CommonSequenceTypes::ZeroOrMoreItems); + return result; +} + +SequenceType::Ptr XSLTSimpleContentConstructor::staticType() const +{ + return CommonSequenceTypes::ZeroOrOneString; +} + +QT_END_NAMESPACE |