--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xml/xmldomandxpath/src/xmlenginedom/xmlengxpathexpression.cpp	Thu Dec 17 09:29:21 2009 +0200
@@ -0,0 +1,139 @@
+// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// XPath expression functions
+//
+
+#include <stdapis/libxml2/libxml2_globals.h>
+#include <stdapis/libxml2/libxml2_xpath.h>
+#include "libxml2_xpathinternals_private.h"
+#include <xml/dom/xmlengxpathexpression.h>
+#include <xml/dom/xmlengxformsinstancemap.h>
+#include <xml/dom/xmlengnode.h>
+#include "xmlengdomdefs.h"
+#include <xml/dom/xmlengxpatherrors.h>
+
+#include <xml/utils/xmlengmem.h>
+#include <xml/utils/xmlengxestrings.h>
+
+#define COMPILED_EXPR (static_cast<xmlXPathCompExprPtr>(iInternal))
+#define INSTANCE_MAP (iInternal2 ? \
+                      static_cast<xmlHashTablePtr> \
+                      (static_cast<CXmlEngXFormsInstanceMap*>(iInternal2)->iInternal) : NULL)
+
+// -----------------------------------------------------------------------------
+// Default constructor
+// -----------------------------------------------------------------------------
+//
+EXPORT_C RXmlEngXPathExpression::RXmlEngXPathExpression():iInternal(NULL), iInternal2(NULL), reserved1(0), reserved2(NULL)
+    {
+    }
+
+// --------------------------------------------------------------------------------------------
+// Resets the compiled expression and frees the allocated memory.
+// --------------------------------------------------------------------------------------------
+//
+EXPORT_C void RXmlEngXPathExpression::Destroy()
+    {
+    xmlXPathFreeCompExpr(COMPILED_EXPR);
+    iInternal = NULL;
+    iInternal2 = NULL;
+    }
+
+// --------------------------------------------------------------------------------------------
+// Evaluates this expression.
+// @param[in] aContextNode The node relative to which the expression is evaluated.
+// @param[in]     aResolver     Namespace-resolver object
+// 
+// @return Result of evaluation as an RXmlEngXPathResult object.
+// May leave with KXmlEngErrXPathResult code if result is undefuned
+// --------------------------------------------------------------------------------------------
+//
+EXPORT_C RXmlEngXPathResult RXmlEngXPathExpression::EvaluateL(
+    TXmlEngNode aContextNode,
+    const MXmlEngNamespaceResolver* /* aResolver */) const
+    {
+    xmlXPathContextPtr ctxt = xmlXPathNewContext(INTERNAL_NODEPTR(aContextNode)->doc);
+    OOM_IF_NULL(ctxt);
+    ctxt->node = INTERNAL_NODEPTR(aContextNode);
+    ctxt->instanceDocs = INSTANCE_MAP;
+    xmlXPathObjectPtr resultObj = xmlXPathCompiledEval(COMPILED_EXPR, ctxt);
+    xmlXPathFreeContext(ctxt);
+    if(OOM_FLAG)
+        {
+        xmlXPathFreeObject(resultObj);
+        XmlEngLeaveL(KErrNoMemory);
+        }
+    if(!resultObj || resultObj->type == XPATH_UNDEFINED)
+        {
+        xmlXPathFreeObject(resultObj);
+        XmlEngLeaveL(KXmlEngErrXPathResult);
+        }
+    return RXmlEngXPathResult(resultObj);
+    }
+
+// --------------------------------------------------------------------------------------------
+// Does the same as #EvaluateL, but as a side-effect calculates the dependency list of the
+// expression. This is meant to be used by the XForms engine.
+//
+// @param[in]     aContextNode  The node relative to which the expression is evaluated.
+// @param[in,out] aDependents   After the method has returned, contains set of nodes that
+// the expression is dependent on.
+// @param[in]     aResolver     Namespace-resolver object
+// 
+// @return Result of evaluation as an RXmlEngXPathResult object.
+// May leave with KXmlEngErrXPathResult code if result is undefuned,
+// argument node set is not destroyed then.
+// --------------------------------------------------------------------------------------------
+//
+EXPORT_C RXmlEngXPathResult RXmlEngXPathExpression::EvaluateWithDependenciesL(
+    TXmlEngNode aContextNode,
+    RXmlEngNodeSet& aDependents,
+    const MXmlEngNamespaceResolver* /* aResolver */) const
+    {
+    xmlXPathContextPtr ctxt = xmlXPathNewContext(INTERNAL_NODEPTR(aContextNode)->doc);
+    OOM_IF_NULL(ctxt);
+    ctxt->node = INTERNAL_NODEPTR(aContextNode);
+    ctxt->instanceDocs = INSTANCE_MAP;
+    xmlXPathObjectPtr resultObj = xmlXPathCompiledEvalWithDependencies(
+                                        COMPILED_EXPR,
+                                        ctxt,
+                                        static_cast<xmlNodeSetPtr>(aDependents.iInternal));
+    xmlXPathFreeContext(ctxt);
+    if(resultObj->type == XPATH_UNDEFINED)
+        {
+        xmlXPathFreeObject(resultObj);
+        XmlEngLeaveL(KXmlEngErrXPathResult);
+        }
+
+    return RXmlEngXPathResult(resultObj);
+    }
+
+EXPORT_C void RXmlEngXPathExpression::SetExtendedContext(
+    void* aContext )
+    {
+    COMPILED_EXPR->extendedContext = aContext;
+    }
+
+EXPORT_C void* RXmlEngXPathExpression::ExtendedContext() const
+    {
+    return COMPILED_EXPR->extendedContext;
+    }
+
+// -----------------------------------------------------------------------------
+// Constructor
+// -----------------------------------------------------------------------------
+//
+RXmlEngXPathExpression::RXmlEngXPathExpression(void* aData, void* aData2):iInternal(aData), iInternal2(aData2)
+    {
+    }