--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/functions/qerrorfn.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,113 @@
+/****************************************************************************
+**
+** 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 "qcommonsequencetypes_p.h"
+#include "qpatternistlocale_p.h"
+#include "qqnamevalue_p.h"
+#include "qatomicstring_p.h"
+
+#include "qerrorfn_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+Item ErrorFN::evaluateSingleton(const DynamicContext::Ptr &context) const
+{
+    QString msg;
+
+    switch(m_operands.count())
+    {
+        case 0: /* No args. */
+        {
+            context->error(QtXmlPatterns::tr("%1 was called.").arg(formatFunction(context->namePool(), signature())),
+                            ReportContext::FOER0000, this);
+            return Item();
+        }
+        case 3:
+        /* Fallthrough, we don't use the 'error object' param. */
+        case 2:
+            msg = m_operands.at(1)->evaluateSingleton(context).stringValue();
+        /* Fall through. */
+        case 1:
+        {
+            const QNameValue::Ptr qName(m_operands.first()->evaluateSingleton(context).as<QNameValue>());
+
+            if(qName)
+                context->error(msg, qName->qName(), this);
+            else
+                context->error(msg, ReportContext::FOER0000, this);
+
+            return Item();
+        }
+        default:
+        {
+            Q_ASSERT_X(false, Q_FUNC_INFO,
+                       "Invalid number of arguments passed to fn:error.");
+            return Item();
+        }
+    }
+}
+
+FunctionSignature::Ptr ErrorFN::signature() const
+{
+    const FunctionSignature::Ptr e(FunctionCall::signature());
+
+    if(m_operands.count() != 1)
+        return e;
+
+    FunctionSignature::Ptr nev(FunctionSignature::Ptr(new FunctionSignature(e->name(),
+                                                      e->minimumArguments(),
+                                                      e->maximumArguments(),
+                                                      e->returnType(),
+                                                      e->properties())));
+    const FunctionArgument::List args(e->arguments());
+    FunctionArgument::List nargs;
+    const QXmlName argName(StandardNamespaces::empty, StandardLocalNames::error);
+    nargs.append(FunctionArgument::Ptr(new FunctionArgument(argName, CommonSequenceTypes::ExactlyOneQName)));
+    nargs.append(args[1]);
+    nargs.append(args[2]);
+    nev->setArguments(nargs);
+
+    return nev;
+}
+
+QT_END_NAMESPACE