1 files changed, 142 insertions, 0 deletions
diff --git a/sc/source/core/tool/formulaparserpool.cxx b/sc/source/core/tool/formulaparserpool.cxx
new file mode 100644
index 000000000..00c5c9108
--- /dev/null
+++ b/sc/source/core/tool/formulaparserpool.cxx
@@ -0,0 +1,142 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <formulaparserpool.hxx>
+#include <com/sun/star/container/XContentEnumerationAccess.hpp>
+#include <com/sun/star/frame/XModel.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/XSingleComponentFactory.hpp>
+#include <com/sun/star/sheet/XFilterFormulaParser.hpp>
+#include <comphelper/processfactory.hxx>
+#include <sfx2/objsh.hxx>
+#include <document.hxx>
+
+using namespace ::com::sun::star::beans;
+using namespace ::com::sun::star::container;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::sheet;
+using namespace ::com::sun::star::uno;
+
+namespace {
+
+class ScParserFactoryMap
+{
+public:
+    explicit            ScParserFactoryMap();
+
+    Reference< XFormulaParser > createFormulaParser(
+                            const Reference< XComponent >& rxComponent,
+                            const OUString& rNamespace );
+
+private:
+    typedef std::unordered_map<
+        OUString, Reference< XSingleComponentFactory > > FactoryMap;
+
+    Reference< XComponentContext > mxContext;   /// Global component context.
+    FactoryMap          maFactories;            /// All parser factories, mapped by formula namespace.
+};
+
+ScParserFactoryMap::ScParserFactoryMap() :
+    mxContext( ::comphelper::getProcessComponentContext() )
+{
+    if( !mxContext.is() )
+        return;
+
+    try
+    {
+        // enumerate all implementations of the FormulaParser service
+        Reference< XContentEnumerationAccess > xFactoryEA( mxContext->getServiceManager(), UNO_QUERY_THROW );
+        Reference< XEnumeration > xEnum( xFactoryEA->createContentEnumeration( "com.sun.star.sheet.FilterFormulaParser" ), UNO_SET_THROW );
+        while( xEnum->hasMoreElements() ) try // single try/catch for every element
+        {
+            // create an instance of the formula parser implementation
+            Reference< XSingleComponentFactory > xCompFactory( xEnum->nextElement(), UNO_QUERY_THROW );
+            Reference< XFilterFormulaParser > xParser( xCompFactory->createInstanceWithContext( mxContext ), UNO_QUERY_THROW );
+
+            // store factory in the map
+            OUString aNamespace = xParser->getSupportedNamespace();
+            if( !aNamespace.isEmpty() )
+                maFactories[ aNamespace ] = xCompFactory;
+        }
+        catch( Exception& )
+        {
+        }
+    }
+    catch( Exception& )
+    {
+    }
+}
+
+Reference< XFormulaParser > ScParserFactoryMap::createFormulaParser(
+        const Reference< XComponent >& rxComponent, const OUString& rNamespace )
+{
+    Reference< XFormulaParser > xParser;
+    FactoryMap::const_iterator aIt = maFactories.find( rNamespace );
+    if( aIt != maFactories.end() ) try
+    {
+        Sequence< Any > aArgs{ Any(rxComponent) };
+        xParser.set( aIt->second->createInstanceWithArgumentsAndContext( aArgs, mxContext ), UNO_QUERY_THROW );
+    }
+    catch( Exception& )
+    {
+    }
+    return xParser;
+}
+
+} // namespace
+
+ScFormulaParserPool::ScFormulaParserPool( const ScDocument& rDoc ) :
+    mrDoc( rDoc )
+{
+}
+
+ScFormulaParserPool::~ScFormulaParserPool()
+{
+}
+
+bool ScFormulaParserPool::hasFormulaParser( const OUString& rNamespace )
+{
+    return getFormulaParser( rNamespace ).is();
+}
+
+Reference< XFormulaParser > ScFormulaParserPool::getFormulaParser( const OUString& rNamespace )
+{
+    // try to find an existing parser entry
+    ParserMap::iterator aIt = maParsers.find( rNamespace );
+    if( aIt != maParsers.end() )
+        return aIt->second;
+
+    // always create a new entry in the map (even if the following initialization fails)
+    Reference< XFormulaParser >& rxParser = maParsers[ rNamespace ];
+
+    // try to create a new parser object
+    if( SfxObjectShell* pDocShell = mrDoc.GetDocumentShell() ) try
+    {
+        static ScParserFactoryMap theScParserFactoryMap;
+
+        Reference< XComponent > xComponent( pDocShell->GetModel(), UNO_QUERY_THROW );
+        rxParser = theScParserFactoryMap.createFormulaParser( xComponent, rNamespace );
+    }
+    catch( Exception& )
+    {
+    }
+    return rxParser;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */