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diff --git a/sca-cpp/trunk/modules/opencl/driver.hpp b/sca-cpp/trunk/modules/opencl/driver.hpp
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index 0000000000..b4b6c2845b
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+++ b/sca-cpp/trunk/modules/opencl/driver.hpp
@@ -0,0 +1,62 @@
+/*
+ * 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
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/* $Rev$ $Date$ */
+
+#ifndef tuscany_opencl_driver_hpp
+#define tuscany_opencl_driver_hpp
+
+/**
+ * OpenCL evaluator main driver loop.
+ */
+
+#include "string.hpp"
+#include "stream.hpp"
+#include "monad.hpp"
+#include "../scheme/driver.hpp"
+#include "eval.hpp"
+
+namespace tuscany {
+namespace opencl {
+
+const value evalDriverLoop(const OpenCLProgram& clprog, istream& in, ostream& out, const OpenCLContext& cl) {
+    scheme::promptForInput(scheme::evalInputPrompt, out);
+    value input = scheme::readValue(in);
+    if (isNil(input))
+        return input;
+    const failable<value> output = evalKernel(createKernel(input, clprog), input, 1, value::String, 512, cl);
+    scheme::announceOutput(scheme::evalOutputPrompt, out);
+    scheme::userPrint(content(output), out);
+    return evalDriverLoop(clprog, in, out, cl);
+}
+
+const bool evalDriverRun(const char* path, istream& in, ostream& out) {
+    OpenCLContext cl(OpenCLContext::DEFAULT);
+    scheme::setupDisplay(out);
+    ifstream is(path);
+    failable<OpenCLProgram> clprog = readProgram(path, is, cl);
+    if (!hasContent(clprog))
+        return true;
+    evalDriverLoop(content(clprog), in, out, cl);
+    return true;
+}
+
+}
+}
+#endif /* tuscany_opencl_driver_hpp */