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Diffstat (limited to 'src/xmlpatterns/utils/qxpathhelper_p.h')
| -rw-r--r-- | src/xmlpatterns/utils/qxpathhelper_p.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/xmlpatterns/utils/qxpathhelper_p.h b/src/xmlpatterns/utils/qxpathhelper_p.h new file mode 100644 index 0000000..7bf33e6 --- /dev/null +++ b/src/xmlpatterns/utils/qxpathhelper_p.h @@ -0,0 +1,174 @@ +/**************************************************************************** +** +** 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_XPathHelper_H +#define Patternist_XPathHelper_H + +#include "qcommonnamespaces_p.h" +#include "qitem_p.h" +#include "qpatternistlocale_p.h" +#include "qreportcontext_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +namespace QPatternist +{ + /** + * @short Contains helper and utility functions. + * + * The common denominator of its functions is that they do not fit in + * well elsewhere, such as in a particular class. It is preferred if XPathHelper + * goes away, and that functions are in more specific classes. + * + * @ingroup Patternist + * @author Frans Englich <fenglich@trolltech.com> + */ + class XPathHelper + { + public: + /** + * Determines whether @p qName is a valid QName. For example, "body" and "xhtml:body" + * is, but "xhtml::body" or "x:body "(note the whitespace) is not. + * + * @see QNameConstructor::expandQName() + * @see QNameValue + */ + static bool isQName(const QString &qName); + + /** + * @short Splits @p qName into @p localName and @p prefix. + * + * @note @p qName must be a valid QName, and that is not checked. + */ + static void splitQName(const QString &qName, QString &prefix, QString &localName); + + /** + * Determines whether @p ns is a reserved namespace. + * + * @see <a href="http://www.w3.org/TR/xslt20/#reserved-namespaces">XSL Transformations + * (XSLT) Version 2.0, 3.2 Reserved Namespaces</a> + * @see <a href="http://www.w3.org/TR/xquery/#FunctionDeclns">XQuery 1.0: An XML + * Query Language, 4.15 Function Declaration</a> + * @returns @c true if @p ns is a reserved namespace, otherwise @c false. + */ + static bool isReservedNamespace(const QXmlName::NamespaceCode ns); + + /** + * Determines whether @p collation is a supported string collation. If it is + * not, error code @p code is raised via @p context. + */ + template<const ReportContext::ErrorCode code, typename TReportContext> + static inline void checkCollationSupport(const QString &collation, + const TReportContext &context, + const SourceLocationReflection *const r) + { + Q_ASSERT(context); + Q_ASSERT(r); + + if(collation != QLatin1String(CommonNamespaces::UNICODE_COLLATION)) + { + context->error(QtXmlPatterns::tr("Only the Unicode Codepoint " + "Collation is supported(%1). %2 is unsupported.") + .arg(formatURI(QLatin1String(CommonNamespaces::UNICODE_COLLATION))) + .arg(formatURI(collation)), + code, r); + } + } + + static QPatternist::ItemTypePtr typeFromKind(const QXmlNodeModelIndex::NodeKind nodeKind); + + /** + * @short Determines whether @p consists only of whitespace. Characters + * considered whitespace are the ones for which QChar::isSpace() returns @c true for. + * + * For the empty string, @c true is returned. + * + * @returns @c true if @p string consists only of whitespace, otherwise @c false. + */ + static inline bool isWhitespaceOnly(const QStringRef &string) + { + const int len = string.length(); + + for(int i = 0; i < len; ++i) + { + if(!string.at(i).isSpace()) // TODO and this is wrong, see sdk/TODO + return false; + } + + return true; + } + + /** + * @overload + */ + static inline bool isWhitespaceOnly(const QString &string) + { + return isWhitespaceOnly(QStringRef(&string)); + } + + private: + /** + * @short This default constructor has no definition, in order to avoid + * instantiation, since it makes no sense to instantiate this class. + */ + inline XPathHelper(); + + Q_DISABLE_COPY(XPathHelper) + }; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |