/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** This file is part of the QtXmlPatterns module of the Qt Toolkit.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** GNU Lesser General Public License Usage

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** 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

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****************************************************************************/

#include "qatomictype_p.h"

#include "qbuiltintypes_p.h"

#include "qcommonvalues_p.h"

#include "qdynamiccontext_p.h"

#include "qpatternistlocale_p.h"

#include "qvalidationerror_p.h"

#include "qboolean_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

bool Boolean::evaluateEBV(const Item::Iterator::Ptr &it,

                          const QExplicitlySharedDataPointer<DynamicContext> &context)

{

    return evaluateEBV(it->next(), it, context);

}

bool Boolean::evaluateEBV(const Item &first,

                          const Item::Iterator::Ptr &it,

                          const QExplicitlySharedDataPointer<DynamicContext> &context)

{

    Q_ASSERT(it);

    Q_ASSERT(context);

    if(!first)

        return false;

    else if(first.isNode())

        return true;

    const Item second(it->next());

    if(second)

    {

        Q_ASSERT(context);

        context->error(QtXmlPatterns::tr("Effective Boolean Value cannot be calculated for a sequence "

                                         "containing two or more atomic values."),

                          ReportContext::FORG0006,

                          QSourceLocation());

        return false;

    }

    else

        return first.as<AtomicValue>()->evaluateEBV(context);

}

bool Boolean::evaluateEBV(const Item &item,

                          const QExplicitlySharedDataPointer<DynamicContext> &context)

{

    if(!item)

        return false;

    else if(item.isNode())

        return true;

    else

        return item.as<AtomicValue>()->evaluateEBV(context);

}

Boolean::Boolean(const bool value) : m_value(value)

{

}

QString Boolean::stringValue() const

{

    return m_value

            ? CommonValues::TrueString->stringValue()

            : CommonValues::FalseString->stringValue();

}

bool Boolean::evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const

{

    return m_value;

}

Boolean::Ptr Boolean::fromValue(const bool value)

{

    return value ? CommonValues::BooleanTrue : CommonValues::BooleanFalse;

}

AtomicValue::Ptr Boolean::fromLexical(const QString &lexical)

{

    const QString val(lexical.trimmed()); /* Apply the whitespace facet. */

    if(val == QLatin1String("true") || val == QChar(QLatin1Char('1')))

        return CommonValues::BooleanTrue;

    else if(val == QLatin1String("false") || val == QChar(QLatin1Char('0')))

        return CommonValues::BooleanFalse;

    else

        return ValidationError::createError();

}

ItemType::Ptr Boolean::type() const

{

    return BuiltinTypes::xsBoolean;

}

QT_END_NAMESPACE