Merge commit '42b2e5ca519766e37ce6941ba4faecc9691cc403' into upstream

[debian/openrocket] / core / src / de / congrace / exp4j / VariableToken.java

diff --git a/core/src/de/congrace/exp4j/VariableToken.java b/core/src/de/congrace/exp4j/VariableToken.java
new file mode 100644 (file)
index 0000000..716ef2e
--- /dev/null
+++ b/core/src/de/congrace/exp4j/VariableToken.java
@@ -0,0 +1,47 @@
+/*
+   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(" ");
+       }
+}