--- /dev/null
+/*
+ Copyright 2011 frank asseg
+
+ Licensed 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.
+
+ */
+package de.congrace.exp4j;
+
+import java.util.Stack;
+
+/**
+ * Superclass for tokenized Strings
+ *
+ * @author fas@congrace.de
+ */
+abstract class Token {
+ private final String value;
+
+ /**
+ * construct a new {@link Token}
+ *
+ * @param value
+ * the value of the {@link Token}
+ */
+ Token(String value) {
+ super();
+ this.value = value;
+ }
+
+ /**
+ * get the value (String representation) of the token
+ *
+ * @return the value
+ */
+ String getValue() {
+ return value;
+ }
+
+ abstract void mutateStackForInfixTranslation(Stack<Token> operatorStack, StringBuilder output);
+}