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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
**
**
****************************************************************************/
#include "qbuiltintypes_p.h"
#include "qcommonsequencetypes_p.h"
#include "qgenericsequencetype_p.h"
#include "qcontextitem_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
Item ContextItem::evaluateSingleton(const DynamicContext::Ptr &context) const
{
return context->contextItem();
}
Expression::Ptr ContextItem::compress(const StaticContext::Ptr &context)
{
m_itemType = context->contextItemType();
return EmptyContainer::compress(context);
}
Expression::Ptr ContextItem::typeCheck(const StaticContext::Ptr &context,
const SequenceType::Ptr &reqType)
{
m_itemType = context->contextItemType();
return EmptyContainer::typeCheck(context, reqType);
}
SequenceType::Ptr ContextItem::staticType() const
{
/* We test m_itemType here because Patternist View calls staticType() before the typeCheck()
* stage. */
if(m_itemType)
return makeGenericSequenceType(m_itemType, Cardinality::exactlyOne());
else
return CommonSequenceTypes::ExactlyOneItem;
}
Expression::Properties ContextItem::properties() const
{
return DisableElimination | RequiresContextItem | EvaluationCacheRedundant;
}
ExpressionVisitorResult::Ptr ContextItem::accept(const ExpressionVisitor::Ptr &visitor) const
{
return visitor->visit(this);
}
Expression::ID ContextItem::id() const
{
return IDContextItem;
}
ItemType::Ptr ContextItem::expectedContextItemType() const
{
return BuiltinTypes::item;
}
const SourceLocationReflection *ContextItem::actualReflection() const
{
if(m_expr)
return m_expr.data();
else
return this;
}
void ContextItem::announceFocusType(const ItemType::Ptr &type)
{
Q_ASSERT(type);
m_itemType = type;
}
QT_END_NAMESPACE
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