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Diffstat (limited to 'src/xmlpatterns/functions/qnodefns.cpp')
| -rw-r--r-- | src/xmlpatterns/functions/qnodefns.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/src/xmlpatterns/functions/qnodefns.cpp b/src/xmlpatterns/functions/qnodefns.cpp new file mode 100644 index 0000000..5230a6c --- /dev/null +++ b/src/xmlpatterns/functions/qnodefns.cpp @@ -0,0 +1,209 @@ +/**************************************************************************** +** +** 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 "qabstractfloat_p.h" +#include "qanyuri_p.h" +#include "qboolean_p.h" +#include "qbuiltintypes_p.h" +#include "qcommonnamespaces_p.h" +#include "qcommonvalues_p.h" +#include "qliteral_p.h" +#include "qatomicstring_p.h" + +#include "qnodefns_p.h" + +QT_BEGIN_NAMESPACE + +using namespace QPatternist; + +Item NameFN::evaluateSingleton(const DynamicContext::Ptr &context) const +{ + const Item node(m_operands.first()->evaluateSingleton(context)); + + if(node) + { + const QXmlName name(node.asNode().name()); + + if(name.isNull()) + return CommonValues::EmptyString; + else + return AtomicString::fromValue(context->namePool()->toLexical(name)); + } + else + return CommonValues::EmptyString; +} + +Item LocalNameFN::evaluateSingleton(const DynamicContext::Ptr &context) const +{ + const Item node(m_operands.first()->evaluateSingleton(context)); + + if(node) + { + const QXmlName name(node.asNode().name()); + + if(name.isNull()) + return CommonValues::EmptyString; + else + return AtomicString::fromValue(context->namePool()->stringForLocalName(name.localName())); + } + else + return CommonValues::EmptyString; +} + +Item NamespaceURIFN::evaluateSingleton(const DynamicContext::Ptr &context) const +{ + const Item node(m_operands.first()->evaluateSingleton(context)); + + if(node) + { + const QXmlName name(node.asNode().name()); + + if(name.isNull()) + return CommonValues::EmptyAnyURI; + else + return toItem(AnyURI::fromValue(context->namePool()->stringForNamespace(name.namespaceURI()))); + } + else + return CommonValues::EmptyAnyURI; +} + +Item NumberFN::evaluateSingleton(const DynamicContext::Ptr &context) const +{ + const Item item(m_operands.first()->evaluateSingleton(context)); + + if(!item) + return CommonValues::DoubleNaN; + + const Item val(cast(item, context)); + Q_ASSERT(val); + + if(val.as<AtomicValue>()->hasError()) + return CommonValues::DoubleNaN; + else + return val; +} + +Expression::Ptr NumberFN::typeCheck(const StaticContext::Ptr &context, + const SequenceType::Ptr &reqType) +{ + const Expression::Ptr me(FunctionCall::typeCheck(context, reqType)); + const ItemType::Ptr sourceType(m_operands.first()->staticType()->itemType()); + + if(BuiltinTypes::xsDouble->xdtTypeMatches(sourceType)) + { + /* The operand is already xs:double, no need for fn:number(). */ + return m_operands.first()->typeCheck(context, reqType); + } + else if(prepareCasting(context, sourceType)) + return me; + else + { + /* Casting to xs:double will never succeed and we would always return NaN.*/ + return wrapLiteral(CommonValues::DoubleNaN, context, this)->typeCheck(context, reqType); + } +} + +bool LangFN::isLangMatch(const QString &candidate, const QString &toMatch) +{ + if(QString::compare(candidate, toMatch, Qt::CaseInsensitive) == 0) + return true; + + return candidate.startsWith(toMatch, Qt::CaseInsensitive) + && candidate.length() > toMatch.length() + && candidate.at(toMatch.length()) == QLatin1Char('-'); +} + +Item LangFN::evaluateSingleton(const DynamicContext::Ptr &context) const +{ + const Item langArg(m_operands.first()->evaluateSingleton(context)); + const QString lang(langArg ? langArg.stringValue() : QString()); + + const QXmlName xmlLang(StandardNamespaces::xml, StandardLocalNames::lang, StandardPrefixes::xml); + const QXmlNodeModelIndex langNode(m_operands.at(1)->evaluateSingleton(context).asNode()); + + const QXmlNodeModelIndex::Iterator::Ptr ancestors(langNode.iterate(QXmlNodeModelIndex::AxisAncestorOrSelf)); + QXmlNodeModelIndex ancestor(ancestors->next()); + + while(!ancestor.isNull()) + { + const QXmlNodeModelIndex::Iterator::Ptr attributes(ancestor.iterate(QXmlNodeModelIndex::AxisAttribute)); + QXmlNodeModelIndex attribute(attributes->next()); + + while(!attribute.isNull()) + { + Q_ASSERT(attribute.kind() == QXmlNodeModelIndex::Attribute); + + if(attribute.name() == xmlLang) + { + if(isLangMatch(attribute.stringValue(), lang)) + return CommonValues::BooleanTrue; + else + return CommonValues::BooleanFalse; + } + + attribute = attributes->next(); + } + + ancestor = ancestors->next(); + } + + return CommonValues::BooleanFalse; +} + +Item RootFN::evaluateSingleton(const DynamicContext::Ptr &context) const +{ + const Item arg(m_operands.first()->evaluateSingleton(context)); + + if(arg) + return arg.asNode().root(); + else + return Item(); +} + +SequenceType::Ptr RootFN::staticType() const +{ + if(m_operands.isEmpty()) + return makeGenericSequenceType(BuiltinTypes::node, Cardinality::exactlyOne()); + else + return makeGenericSequenceType(BuiltinTypes::node, m_operands.first()->staticType()->cardinality().toWithoutMany()); +} + +QT_END_NAMESPACE |