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46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_XPathHelper_H
53 #define Patternist_XPathHelper_H
55 #include <private/qcommonnamespaces_p.h>
56 #include <private/qitem_p.h>
57 #include <private/qpatternistlocale_p.h>
58 #include <private/qreportcontext_p.h>
67 * @short Contains helper and utility functions.
69 * The common denominator of its functions is that they do not fit in
70 * well elsewhere, such as in a particular class. It is preferred if XPathHelper
71 * goes away, and that functions are in more specific classes.
74 * @author Frans Englich <frans.englich@nokia.com>
80 * Determines whether @p qName is a valid QName. For example, "body" and "xhtml:body"
81 * is, but "xhtml::body" or "x:body "(note the whitespace) is not.
83 * @see QNameConstructor::expandQName()
86 static bool isQName(const QString &qName);
89 * @short Splits @p qName into @p localName and @p prefix.
91 * @note @p qName must be a valid QName, and that is not checked.
93 static void splitQName(const QString &qName, QString &prefix, QString &localName);
96 * Determines whether @p ns is a reserved namespace.
98 * @see <a href="http://www.w3.org/TR/xslt20/#reserved-namespaces">XSL Transformations
99 * (XSLT) Version 2.0, 3.2 Reserved Namespaces</a>
100 * @see <a href="http://www.w3.org/TR/xquery/#FunctionDeclns">XQuery 1.0: An XML
101 * Query Language, 4.15 Function Declaration</a>
102 * @returns @c true if @p ns is a reserved namespace, otherwise @c false.
104 static bool isReservedNamespace(const QXmlName::NamespaceCode ns);
107 * Determines whether @p collation is a supported string collation. If it is
108 * not, error code @p code is raised via @p context.
110 template<const ReportContext::ErrorCode code, typename TReportContext>
111 static inline void checkCollationSupport(const QString &collation,
112 const TReportContext &context,
113 const SourceLocationReflection *const r)
118 if(collation != QLatin1String(CommonNamespaces::UNICODE_COLLATION))
120 context->error(QtXmlPatterns::tr("Only the Unicode Codepoint "
121 "Collation is supported(%1). %2 is unsupported.")
122 .arg(formatURI(QLatin1String(CommonNamespaces::UNICODE_COLLATION)))
123 .arg(formatURI(collation)),
128 static QPatternist::ItemTypePtr typeFromKind(const QXmlNodeModelIndex::NodeKind nodeKind);
131 * Normalizes an @p uri by resolving it to the application directory if empty.
133 static QUrl normalizeQueryURI(const QUrl &uri);
136 * @short Determines whether @p consists only of whitespace. Characters
137 * considered whitespace are the ones for which QChar::isSpace() returns @c true for.
139 * For the empty string, @c true is returned.
141 * @returns @c true if @p string consists only of whitespace, otherwise @c false.
143 static inline bool isWhitespaceOnly(const QStringRef &string)
145 const int len = string.length();
147 for(int i = 0; i < len; ++i)
149 if(!string.at(i).isSpace()) // TODO and this is wrong, see sdk/TODO
159 static inline bool isWhitespaceOnly(const QString &string)
161 return isWhitespaceOnly(QStringRef(&string));
166 * @short This default constructor has no definition, in order to avoid
167 * instantiation, since it makes no sense to instantiate this class.
169 inline XPathHelper();
171 Q_DISABLE_COPY(XPathHelper)