--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/data/qschemanumeric_p.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,235 @@
+/****************************************************************************
+**
+** 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_Numeric_H
+#define Patternist_Numeric_H
+
+#include "qitem_p.h"
+#include "qprimitives_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+/**
+ * @file
+ * @short Contains class Numeric. This file was originally called qnumeric_p.h,
+ * but various build systems cannot handle that that name happens to be
+ * identical to another one, the one in QtCore.
+ */
+
+namespace QPatternist
+{
+ /**
+ * @short Base class for all numeric values.
+ *
+ * @section creation Creating Instances
+ *
+ * @todo
+ * - Depending on what type of val
+ * - Numeric::createFromString
+ * - Various classes has ::Zero(), ::PosINF(), ::NaN(), NegINF()
+ * - Never use constructor, use createFromNative, or createFromString.
+ *
+ * @see <a href="http://www.w3.org/TR/xquery-operators/#numeric-functions">XQuery 1.0
+ * and XPath 2.0 Functions and Operators, 6 Functions and Operators on Numerics</a>
+ * @see <a href="http://www.w3.org/TR/xquery-operators/#func-overloading">XQuery 1.0
+ * and XPath 2.0 Functions and Operators, 1.2 Function Overloading</a>
+ * @author Frans Englich <frans.englich@nokia.com>
+ * @ingroup Patternist_xdm
+ * @todo discuss data hierarchy the non existatnt number data type
+ */
+ class Numeric : public AtomicValue
+ {
+ public:
+
+ typedef QExplicitlySharedDataPointer<Numeric> Ptr;
+
+ /**
+ * Creates a Numeric sub-class that is appropriate for @p number.
+ *
+ * @note usages of e/E is not handled; Double::fromLexical should
+ * be used in that case. There is no function similar to fromLexical that also
+ * takes double values into account(because that distinction is done in the scanner).
+ *
+ * Currently used in the parser to create appropriate expressions.
+ */
+ static AtomicValue::Ptr fromLexical(const QString &number);
+
+ /**
+ * @returns the particular number's value as a native representation of
+ * the type xs:double. This can be considered that the value is cast to
+ * xs:double.
+ */
+ virtual xsDouble toDouble() const = 0;
+
+ /**
+ * @returns the particular number's value as a native representation of
+ * the type xs:integer. This can be considered that the value is cast to
+ * xs:integer.
+ */
+ virtual xsInteger toInteger() const = 0;
+
+ /**
+ * @returns the number as an unsigned integer. If the value is not
+ * unsigned, the code asserts and behavior is undefined.
+ */
+ virtual qulonglong toUnsignedInteger() const = 0;
+
+ /**
+ * @returns the particular number's value as a native representation of
+ * the type xs:float. This can be considered that the value is cast to
+ * xs:float.
+ */
+ virtual xsFloat toFloat() const = 0;
+
+ /**
+ * @returns the particular number's value as a native representation of
+ * the type xs:decimal. This can be considered that the value is cast to
+ * xs:decimal.
+ */
+ virtual xsFloat toDecimal() const = 0;
+
+ /**
+ * Performs the algorithm specified for the function fn:round on this Numeric,
+ * and whose result is returned.
+ *
+ * @see <a href="http://www.w3.org/TR/xpath-functions/#func-round">XQuery 1.0
+ * and XPath 2.0 Functions and Operators, 6.4.4 fn:round</a>
+ */
+ virtual Numeric::Ptr round() const = 0;
+
+ /**
+ * Performs rounding as defined for the fn:round-half-to-even on this Numeric,
+ * and whose result is returned.
+ *
+ * @see <a href="http://www.w3.org/TR/xpath-functions/#func-round-half-to-even">XQuery 1.0
+ * and XPath 2.0 Functions and Operators, 6.4.5 fn:round-half-to-even</a>
+ */
+ virtual Numeric::Ptr roundHalfToEven(const xsInteger scale) const = 0;
+
+ /**
+ * Performs the algorithm specified for the function fn:floor on this Numeric,
+ * and whose result is returned.
+ *
+ * @see <a href="http://www.w3.org/TR/xpath-functions/#func-floor">XQuery 1.0
+ * and XPath 2.0 Functions and Operators, 6.4.3 fn:floor</a>
+ */
+ virtual Numeric::Ptr floor() const = 0;
+
+ /**
+ * Performs the algorithm specified for the function fn:ceiling on this Numeric,
+ * and whose result is returned.
+ *
+ * @see <a href="http://www.w3.org/TR/xpath-functions/#func-ceiling">XQuery 1.0
+ * and XPath 2.0 Functions and Operators, 6.4.2 fn:ceiling</a>
+ */
+ virtual Numeric::Ptr ceiling() const = 0;
+
+ /**
+ * Performs the algorithm specified for the function fn:abs on this Numeric,
+ * and whose result is returned.
+ *
+ * @see <a href="http://www.w3.org/TR/xpath-functions/#func-ceiling">XQuery 1.0
+ * and XPath 2.0 Functions and Operators, 6.4.1 fn:abs</a>
+ */
+ virtual Numeric::Ptr abs() const = 0;
+
+ /**
+ * Determines whether this Numeric is not-a-number, @c NaN. For numeric types
+ * that cannot represent @c NaN, this function should return @c false.
+ *
+ * @returns @c true if this Numeric is @c NaN
+ */
+ virtual bool isNaN() const = 0;
+
+ /**
+ * Determines whether this Numeric is an infinite number. Signedness
+ * is irrelevant, -INF as well as INF is considered infinity.
+ *
+ * For numeric types that cannot represent infinity, such as xs:integer
+ * , this function should return @c false.
+ *
+ * @returns @c true if this Numeric is an infinite number
+ */
+ virtual bool isInf() const = 0;
+
+ /**
+ * Unary minus.
+ */
+ virtual Item toNegated() const = 0;
+
+ /**
+ * @short Returns @c true if this value is signed. If @c false is
+ * returned, the value is unsigned.
+ *
+ * For float and decimal values, @c xs:double, @c xs:float and @c
+ * xs:decimal, the code asserts and behavior is undefined.
+ */
+ virtual bool isSigned() const = 0;
+
+ protected:
+ /**
+ * @short Implements @c fn:round() for types implemented with floating
+ * point.
+ *
+ * MS Windows and at least IRIX does not have C99's nearbyint() function(see the man
+ * page), so we reinvent it.
+ */
+ static xsDouble roundFloat(const xsDouble val);
+ };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif