--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/data/qatomiccomparators_p.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,298 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@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_AtomicComparators_H
+#define Patternist_AtomicComparators_H
+
+#include "qabstractfloat_p.h"
+#include "qatomiccomparator_p.h"
+#include "qprimitives_p.h"
+
+/**
+ * @file
+ * @short Contains all the classes implementing comparisons between atomic values.
+ */
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+ /**
+ * @short Performs case @em sensitive string comparison
+ * between @c xs:anyUri, @c xs:string, and @c xs:untypedAtomic.
+ *
+ * @ingroup Patternist_xdm
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class StringComparator : public AtomicComparator
+ {
+ public:
+ /**
+ * Compares two strings, and returns the appropriate AtomicComparator::ComparisonResult enum. This
+ * is a bit simplified version of string comparison as defined in the XPath specifications,
+ * since this does not take any string collations into account(which an implementation neither
+ * is required to do).
+ *
+ * @see <a href="http://www.w3.org/TR/xpath-functions/#string-compare">XQuery 1.0 and XPath
+ * 2.0 Functions and Operators, 7.3 ValueComparison::Equality and Comparison of Strings</a>
+ */
+ virtual ComparisonResult compare(const Item &op1,
+ const AtomicComparator::Operator op,
+ const Item &op2) const;
+
+ /**
+ * Compares two strings, and returns @c true if they are considered equal as per
+ * an ordinary string comparison. In other words, this is an implementation with
+ * the Unicode code point collation.
+ *
+ * @see <a href="http://www.w3.org/TR/xpath-functions/#string-compare">XQuery 1.0 and XPath
+ * 2.0 Functions and Operators, 7.3 ValueComparison::Equality and Comparison of Strings</a>
+ */
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Performs case @em insensitive string comparison
+ * between @c xs:anyUri, @c xs:string, and @c xs:untypedAtomic.
+ *
+ * @ingroup Patternist_xdm
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class CaseInsensitiveStringComparator : public AtomicComparator
+ {
+ public:
+ /**
+ * Converts both string values to upper case and afterwards compare them.
+ */
+ virtual ComparisonResult compare(const Item &op1,
+ const AtomicComparator::Operator op,
+ const Item &op2) const;
+
+ /**
+ * Converts both string values case insensitively.
+ */
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Compares @c xs:base64Binary and @c xs:hexBinary values.
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class BinaryDataComparator : public AtomicComparator
+ {
+ public:
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Compares @c xs:boolean values.
+ *
+ * This is done via the object's Boolean::evaluteEBV() function.
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class BooleanComparator : public AtomicComparator
+ {
+ public:
+ virtual ComparisonResult compare(const Item &op1,
+ const AtomicComparator::Operator op,
+ const Item &op2) const;
+
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Compares @c xs:double values.
+ *
+ * @todo Add docs about numeric promotion
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class AbstractFloatComparator : public AtomicComparator
+ {
+ public:
+ virtual ComparisonResult compare(const Item &op1,
+ const AtomicComparator::Operator op,
+ const Item &op2) const;
+
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Compares @c xs:double values for the purpose of sorting.
+ *
+ * @todo Add docs about numeric promotion
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ template<const AtomicComparator::Operator t_op>
+ class AbstractFloatSortComparator : public AbstractFloatComparator
+ {
+ public:
+ virtual ComparisonResult compare(const Item &o1,
+ const AtomicComparator::Operator op,
+ const Item &o2) const
+ {
+ Q_ASSERT_X(t_op == OperatorLessThanNaNLeast || t_op == OperatorLessThanNaNGreatest, Q_FUNC_INFO,
+ "Can only be instantiated with those two.");
+ Q_ASSERT(op == t_op);
+ Q_UNUSED(op); /* Needed when building in release mode. */
+
+ const xsDouble v1 = o1.template as<Numeric>()->toDouble();
+ const xsDouble v2 = o2.template as<Numeric>()->toDouble();
+
+ if(qIsNaN(v1) && !qIsNaN(v2))
+ return t_op == OperatorLessThanNaNLeast ? LessThan : GreaterThan;
+ if(!qIsNaN(v1) && qIsNaN(v2))
+ return t_op == OperatorLessThanNaNLeast ? GreaterThan : LessThan;
+
+ if(Double::isEqual(v1, v2))
+ return Equal;
+ else if(v1 < v2)
+ return LessThan;
+ else
+ return GreaterThan;
+ }
+
+ };
+
+ /**
+ * @short Compares @c xs:decimal values.
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class DecimalComparator : public AtomicComparator
+ {
+ public:
+ virtual ComparisonResult compare(const Item &op1,
+ const AtomicComparator::Operator op,
+ const Item &op2) const;
+
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Compares @c xs:integer values.
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class IntegerComparator : public AtomicComparator
+ {
+ public:
+ virtual ComparisonResult compare(const Item &op1,
+ const AtomicComparator::Operator op,
+ const Item &op2) const;
+
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Compares @c xs:QName values.
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class QNameComparator : public AtomicComparator
+ {
+ public:
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Compares sub-classes of AbstractDateTime.
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class AbstractDateTimeComparator : public AtomicComparator
+ {
+ public:
+ virtual ComparisonResult compare(const Item &op1,
+ const AtomicComparator::Operator op,
+ const Item &op2) const;
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+ };
+
+ /**
+ * @short Compares sub-classes of AbstractDuration.
+ *
+ * @author Frans Englich <frans.englich@nokia.com>
+ */
+ class AbstractDurationComparator : public AtomicComparator
+ {
+ public:
+ virtual ComparisonResult compare(const Item &op1,
+ const AtomicComparator::Operator op,
+ const Item &op2) const;
+ virtual bool equals(const Item &op1,
+ const Item &op2) const;
+
+ private:
+ static inline QDateTime addDurationToDateTime(const QDateTime &dateTime,
+ const AbstractDuration *const duration);
+ };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif