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Diffstat (limited to 'src/xmlpatterns/expr/qqnameconstructor_p.h')
| -rw-r--r-- | src/xmlpatterns/expr/qqnameconstructor_p.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/src/xmlpatterns/expr/qqnameconstructor_p.h b/src/xmlpatterns/expr/qqnameconstructor_p.h new file mode 100644 index 0000000..95ea5b9 --- /dev/null +++ b/src/xmlpatterns/expr/qqnameconstructor_p.h @@ -0,0 +1,182 @@ +/**************************************************************************** +** +** 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. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. + +#ifndef Patternist_QNameConstructor_H +#define Patternist_QNameConstructor_H + +#include "qsinglecontainer_p.h" +#include "qbuiltintypes_p.h" +#include "qpatternistlocale_p.h" +#include "qxpathhelper_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +namespace QPatternist +{ + /** + * @short Creates an @c xs:QName value from a lexical QName using + * statically known namespace bindings. + * + * @see QQNameValue + * @see QXmlUtils + * @author Frans Englich <fenglich@trolltech.com> + * @ingroup Patternist_expressions + */ + class QNameConstructor : public SingleContainer + { + public: + + QNameConstructor(const Expression::Ptr &source, + const NamespaceResolver::Ptr &nsResolver); + + virtual Item evaluateSingleton(const DynamicContext::Ptr &) const; + + virtual SequenceType::List expectedOperandTypes() const; + + virtual SequenceType::Ptr staticType() const; + + virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const; + + /** + * Expands @p lexicalQName, which is a lexical representation of a QName such as "x:body", into + * a QName using @p nsResolver to supply the namespace bindings. + * + * If @p lexicalQName is lexically invalid @p InvalidQName is raised via @p context, or if + * no namespace binding does not exists for a prefix(if any) in @p lexicalQName, @p NoBinding + * is raised via @p context. + * + * If @p asForAttribute is @c true, the name is considered to be for an + * attribute in some way, and @p lexicalQName will not pick up the + * default namespace if it doesn't have a prefix. + * + * @p nsResolver is parameterized meaning the function can be instantiated with either + * DynamicContext or StaticContext. + * + * @see QQNameValue + * @see QXmlUtils + */ + template<typename TReportContext, + const ReportContext::ErrorCode InvalidQName, + const ReportContext::ErrorCode NoBinding> + static + QXmlName expandQName(const QString &lexicalQName, + const TReportContext &context, + const NamespaceResolver::Ptr &nsResolver, + const SourceLocationReflection *const r, + const bool asForAttribute = false); + + /** + * Resolves the namespace prefix @p prefix to its namespace if it exists, or + * raised ReportContext::XPST0081 otherwise. + * + * @returns the namespace URI corresponding to @p prefix + */ + static QXmlName::NamespaceCode namespaceForPrefix(const QXmlName::PrefixCode prefix, + const StaticContext::Ptr &context, + const SourceLocationReflection *const r); + + virtual const SourceLocationReflection *actualReflection() const; + + private: + const NamespaceResolver::Ptr m_nsResolver; + }; + + template<typename TReportContext, + const ReportContext::ErrorCode InvalidQName, + const ReportContext::ErrorCode NoBinding> + QXmlName QNameConstructor::expandQName(const QString &lexicalQName, + const TReportContext &context, + const NamespaceResolver::Ptr &nsResolver, + const SourceLocationReflection *const r, + const bool asForAttribute) + { + Q_ASSERT(nsResolver); + Q_ASSERT(context); + + if(XPathHelper::isQName(lexicalQName)) + { + QString prefix; + QString local; + XPathHelper::splitQName(lexicalQName, prefix, local); + const QXmlName::NamespaceCode nsCode = asForAttribute && prefix.isEmpty() ? QXmlName::NamespaceCode(StandardNamespaces::empty) + : (nsResolver->lookupNamespaceURI(context->namePool()->allocatePrefix(prefix))); + + if(nsCode == NamespaceResolver::NoBinding) + { + context->error(QtXmlPatterns::tr("No namespace binding exists for " + "the prefix %1 in %2").arg(formatKeyword(prefix), + formatKeyword(lexicalQName)), + NoBinding, + r); + return QXmlName(); /* Silence compiler warning. */ + } + else + return context->namePool()->allocateQName(context->namePool()->stringForNamespace(nsCode), local, prefix); + } + else + { + context->error(QtXmlPatterns::tr("%1 is an invalid %2") + .arg(formatData(lexicalQName)) + .arg(formatType(context->namePool(), BuiltinTypes::xsQName)), + InvalidQName, + r); + return QXmlName(); /* Silence compiler warning. */ + } + } +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |