--- /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;
+
+/**
+ * A {@link Token} for representing variables
+ *
+ * @author fas
+ */
+class VariableToken extends CalculationToken {
+ /**
+ * construct a new {@link VariableToken}
+ *
+ * @param value
+ * the value of the token
+ */
+ VariableToken(String value) {
+ super(value);
+ }
+
+ @Override
+ void mutateStackForCalculation(Stack<Variable> stack, VariableSet variableValues) {
+ Variable value = variableValues.getVariableNamed(this.getValue());
+ stack.push(value);
+ }
+
+ @Override
+ void mutateStackForInfixTranslation(Stack<Token> operatorStack, StringBuilder output) {
+ output.append(this.getValue()).append(" ");
+ }
+}