Long live Qt 4.5!

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+/****************************************************************************
+**
+** 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_AtomicCasters_H
+#define Patternist_AtomicCasters_H
+
+#include "qatomiccaster_p.h"
+#include "qdecimal_p.h"
+#include "qderivedinteger_p.h"
+#include "qderivedstring_p.h"
+#include "qinteger_p.h"
+#include "qvalidationerror_p.h"
+
+/**
+ * @file
+ * @short Contains classes sub-classing AtomicCaster and which
+ * are responsible of casting an atomic value to another type.
+ */
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+
+    /**
+     * @short Casts any atomic value to @c xs:string.
+     *
+     * This class uses Item::stringValue() for retrieving a string
+     * representation, and thus supports casting from atomic values
+     * of any type.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    template<TypeOfDerivedString DerivedType>
+    class ToStringCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const
+        {
+            Q_ASSERT(from);
+            return DerivedString<DerivedType>::fromLexical(context->namePool(), from.stringValue());
+        }
+    };
+
+    /**
+     * @short Casts any atomic value to @c xs:untypedAtomic.
+     *
+     * This class uses Item::stringValue() for retrieving a string
+     * representation, and thus supports casting from atomic values
+     * of any type. The implementation is similar to ToStringCaster.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class ToUntypedAtomicCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a string value to @c xs:anyURI.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class ToAnyURICaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:hexBinary atomic value to @c xs:base64Binary.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class HexBinaryToBase64BinaryCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:base64Binary atomic value to @c xs:hexBinary.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class Base64BinaryToHexBinaryCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:base64Binary.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToBase64BinaryCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:hexBinary.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToHexBinaryCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts any @c numeric value to @c xs:boolean.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class NumericToBooleanCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts any string value, @c xs:string or @c xs:untypedAtomic, to @c xs:boolean.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToBooleanCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c numeric value, such as @c xs:double or @c xs:decimal, to @c xs:integer or
+     * @c xs:decimal, depending on IsInteger.
+     *
+     * castFrom() uses Numeric::toInteger() for doing the actual casting.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    template <const bool IsInteger>
+    class NumericToDecimalCaster : public AtomicCaster
+    {
+    public:
+        /**
+         * Used by NumericToDerivedIntegerCaster in addition to this class.
+         */
+        static inline QString errorMessage()
+        {
+            return QtXmlPatterns::tr("When casting to %1 from %2, the source value cannot be %3.");
+        }
+
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const
+        {
+            const ItemType::Ptr t(from.type());
+            const Numeric *const num = from.template as<Numeric>();
+
+            if(BuiltinTypes::xsDouble->xdtTypeMatches(t) || BuiltinTypes::xsFloat->xdtTypeMatches(t))
+            {
+                if(num->isInf() || num->isNaN())
+                {
+                    return ValidationError::createError(errorMessage()
+                                                        .arg(formatType(context->namePool(), IsInteger ? BuiltinTypes::xsInteger : BuiltinTypes::xsDecimal))
+                                                        .arg(formatType(context->namePool(), t))
+                                                        .arg(formatData(num->stringValue())),
+                                                        ReportContext::FOCA0002);
+                }
+            }
+
+            if(IsInteger)
+                return Integer::fromValue(num->toInteger());
+            else
+                return toItem(Decimal::fromValue(num->toDecimal()));
+        }
+    };
+
+    /**
+     * @short Casts a string value, @c xs:string or @c xs:untypedAtomic, to @c xs:decimal.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToDecimalCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a string value, @c xs:string or @c xs:untypedAtomic, to @c xs:integer.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToIntegerCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a value of type @c xs:boolean to @c xs:decimal.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class BooleanToDecimalCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a value of type @c xs:boolean to @c xs:integer.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class BooleanToIntegerCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a value to itself. Essentially, this AtomicCaster does nothing.
+     *
+     * Casting a value to the type of itself is defined to be a noop,
+     * no operation. When it can be statically detected that will be done,
+     * CastAs rewrites itself appropriately during compilation, but
+     * in some cases insufficent data is available at compile time and then
+     * is this class need on a case-per-case base at evaluation time.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class SelfToSelfCaster : public AtomicCaster
+    {
+    public:
+
+        /**
+         * This function simply returns @p from.
+         */
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:gYear.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToGYearCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:gDay.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToGDayCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:gMonth.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToGMonthCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:gYearMonth.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToGYearMonthCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:gYearMonth.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToGMonthDayCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:dateTime.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToDateTimeCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:time.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToTimeCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:date.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToDateCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:duration.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToDurationCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:dayTimeDuration.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToDayTimeDurationCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:string or @c xs:untypedAtomic atomic value to @c xs:yearMonthDuration.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class StringToYearMonthDurationCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+
+    /**
+     * @short Casts a @c xs:date or @c xs:dateTime atomic value to @c xs:gYear.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDateTimeToGYearCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:date or @c xs:dateTime atomic value to @c xs:gYearMonth.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDateTimeToGYearMonthCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:date or @c xs:dateTime atomic value to @c xs:gMonth.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDateTimeToGMonthCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:date or @c xs:dateTime atomic value to @c xs:gMonthDay.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDateTimeToGMonthDayCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts a @c xs:date or @c xs:dateTime atomic value to @c xs:gDay.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDateTimeToGDayCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts an AbstractDateTime instance to DateTime.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDateTimeToDateTimeCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts an AbstractDateTime instance to SchemaTime.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDateTimeToDateCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts an AbstractDateTime instance to SchemaTime.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDateTimeToTimeCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts an AbstractDuration instance to Duration.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDurationToDurationCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts an AbstractDuration instance to DayTimeDuration.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDurationToDayTimeDurationCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts an AbstractDuration instance to YearMonthDuration.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    class AbstractDurationToYearMonthDurationCaster : public AtomicCaster
+    {
+    public:
+        virtual Item castFrom(const Item &from,
+                              const QExplicitlySharedDataPointer<DynamicContext> &context) const;
+    };
+
+    /**
+     * @short Casts an @c xs:string instance to a derived type of @c xs:integer.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    template<TypeOfDerivedInteger type>
+    class StringToDerivedIntegerCaster : public AtomicCaster
+    {
+    public:
+        virtual Item
+        castFrom(const Item &from,
+                 const QExplicitlySharedDataPointer<DynamicContext> &context) const
+        {
+            return DerivedInteger<type>::fromLexical(context->namePool(), from.stringValue());
+        }
+    };
+
+    /**
+     * @short Casts an @c xs:boolean instance to a derived type of @c xs:integer.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    template<TypeOfDerivedInteger type>
+    class BooleanToDerivedIntegerCaster : public AtomicCaster
+    {
+    public:
+        virtual Item
+        castFrom(const Item &from,
+                 const QExplicitlySharedDataPointer<DynamicContext> &context) const
+        {
+            return DerivedInteger<type>::fromValue(context->namePool(), from.template as<AtomicValue>()->evaluateEBV(context) ? 1 : 0);
+        }
+    };
+
+    /**
+     * @short Casts an @c xs:boolean instance to a derived type of @c xs:integer.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    template<TypeOfDerivedString type>
+    class AnyToDerivedStringCaster : public AtomicCaster
+    {
+    public:
+        virtual Item
+        castFrom(const Item &from,
+                 const QExplicitlySharedDataPointer<DynamicContext> &context) const
+        {
+            return DerivedString<type>::fromLexical(context->namePool(), from.stringValue());
+        }
+    };
+
+    /**
+     * @short Casts any @c numeric instance to a derived type of @c xs:integer.
+     *
+     * @ingroup Patternist_xdm
+     * @author Frans Englich <fenglich@trolltech.com>
+     */
+    template<TypeOfDerivedInteger type>
+    class NumericToDerivedIntegerCaster : public AtomicCaster
+    {
+    public:
+        virtual Item
+        castFrom(const Item &from,
+                 const QExplicitlySharedDataPointer<DynamicContext> &context) const
+        {
+            const ItemType::Ptr t(from.type());
+            const Numeric *const num = from.template as<Numeric>();
+
+            if(BuiltinTypes::xsDouble->xdtTypeMatches(t) || BuiltinTypes::xsFloat->xdtTypeMatches(t))
+            {
+                if(num->isInf() || num->isNaN())
+                {
+                    return ValidationError::createError(NumericToDecimalCaster<false>::errorMessage()
+                                                        .arg(formatType(context->namePool(), DerivedInteger<type>::itemType()))
+                                                        .arg(formatType(context->namePool(), t))
+                                                        .arg(formatData(num->stringValue())),
+                                                        ReportContext::FOCA0002);
+                }
+            }
+
+            return toItem(DerivedInteger<type>::fromValue(context->namePool(), from.template as<Numeric>()->toInteger()));
+        }
+    };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif