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+/*
+ * 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.
+ */
+
+/* $Rev$ $Date$ */
+
+/**
+ * Currency converter component implementation.
+ */
+
+#include "string.hpp"
+#include "function.hpp"
+#include "list.hpp"
+#include "value.hpp"
+#include "monad.hpp"
+
+namespace tuscany {
+namespace store {
+
+/**
+ * Convert an amount from USD to a currency.
+ */
+const failable<value> convert(unused const value& from, const value& to, const value& amount) {
+ if (to == string("EUR"))
+ return value(0.70 * (double)amount);
+ return amount;
+}
+
+/**
+ * Return a currency symbol.
+ */
+const failable<value> symbol(const value& currency) {
+ if (currency == string("EUR"))
+ return value(string("E"));
+ return value(string("$"));
+}
+
+}
+}
+
+extern "C" {
+
+const tuscany::value apply(const tuscany::list<tuscany::value>& params) {
+ const tuscany::value func(car(params));
+ if (func == "convert")
+ return tuscany::store::convert(cadr(params), caddr(params), cadddr(params));
+ if (func == "symbol")
+ return tuscany::store::symbol(cadr(params));
+ return tuscany::mkfailure<tuscany::value>();
+}
+
+}