--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/expr/qoptimizerblocks.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,179 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcommonnamespaces_p.h"
+
+#include "qcommonsequencetypes_p.h"
+#include "qfunctionfactory_p.h"
+#include "qgeneralcomparison_p.h"
+#include "qliteral_p.h"
+#include "qschemanumeric_p.h"
+#include "qvaluecomparison_p.h"
+
+#include "qoptimizerblocks_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+ByIDIdentifier::ByIDIdentifier(const Expression::ID id) : m_id(id)
+{
+}
+
+bool ByIDIdentifier::matches(const Expression::Ptr &expr) const
+{
+    return expr->is(m_id);
+}
+
+ComparisonIdentifier::ComparisonIdentifier(const QVector<Expression::ID> hosts,
+                                           const AtomicComparator::Operator op) : m_hosts(hosts),
+                                                                                  m_op(op)
+{
+}
+
+bool ComparisonIdentifier::matches(const Expression::Ptr &e) const
+{
+    const Expression::ID eID = e->id();
+
+    if(eID == Expression::IDGeneralComparison)
+    {
+        if(m_hosts.contains(Expression::IDGeneralComparison))
+            return e->as<GeneralComparison>()->operatorID() == m_op;
+        else
+            return false;
+    }
+    else if(eID == Expression::IDValueComparison)
+    {
+        if(m_hosts.contains(Expression::IDValueComparison))
+            return e->as<ValueComparison>()->operatorID() == m_op;
+        else
+            return false;
+    }
+    else
+        return false;
+}
+
+BySequenceTypeIdentifier::BySequenceTypeIdentifier(const SequenceType::Ptr &seqType) : m_seqType(seqType)
+{
+    Q_ASSERT(seqType);
+}
+
+bool BySequenceTypeIdentifier::matches(const Expression::Ptr &expr) const
+{
+    const SequenceType::Ptr t(expr->staticType());
+
+    return m_seqType->itemType()->xdtTypeMatches(t->itemType())
+           &&
+           m_seqType->cardinality().isMatch(t->cardinality());
+}
+
+IntegerIdentifier::IntegerIdentifier(const xsInteger num) : m_num(num)
+{
+}
+
+bool IntegerIdentifier::matches(const Expression::Ptr &expr) const
+{
+    return expr->is(Expression::IDIntegerValue) &&
+           expr->as<Literal>()->item().as<Numeric>()->toInteger() == m_num;
+}
+
+BooleanIdentifier::BooleanIdentifier(const bool value) : m_value(value)
+{
+}
+
+bool BooleanIdentifier::matches(const Expression::Ptr &expr) const
+{
+    return expr->is(Expression::IDBooleanValue) &&
+           expr->evaluateEBV(DynamicContext::Ptr()) == m_value;
+}
+
+ByIDCreator::ByIDCreator(const Expression::ID id) : m_id(id)
+{
+    Q_ASSERT(id != Expression::IDIgnorableExpression);
+}
+
+Expression::Ptr ByIDCreator::create(const Expression::List &operands,
+                                    const StaticContext::Ptr &context,
+                                    const SourceLocationReflection *const r) const
+{
+    return create(m_id, operands, context, r);
+}
+
+Expression::Ptr ByIDCreator::create(const Expression::ID id,
+                                    const Expression::List &operands,
+                                    const StaticContext::Ptr &context,
+                                    const SourceLocationReflection *const r)
+{
+    Q_ASSERT(context);
+
+    QXmlName::LocalNameCode fnName;
+
+    switch(id)
+    {
+        case Expression::IDExistsFN:
+        {
+            fnName = StandardLocalNames::exists;
+            break;
+        }
+        case Expression::IDEmptyFN:
+        {
+            fnName = StandardLocalNames::empty;
+            break;
+        }
+        default:
+        {
+            Q_ASSERT_X(false, Q_FUNC_INFO,
+                       "Cannot create an expression of requested type; m_id is wrong.");
+            return Expression::Ptr();
+        }
+    }
+
+    /* The reason we don't simply do 'new ExistsFN()' ourselves, is that all FunctionCall
+     * instances needs their FunctionSignature in order to function, and the FunctionFactories
+     * sets that. */
+    const QXmlName qName(StandardNamespaces::fn, fnName);
+
+    const Expression::Ptr result(context->functionSignatures()->createFunctionCall(qName, operands, context, r));
+    context->wrapExpressionWith(r, result);
+    return result;
+}
+
+QT_END_NAMESPACE