1 files changed, 45 insertions, 0 deletions
diff --git a/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/UnaryOperationNode.java b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/UnaryOperationNode.java
new file mode 100644
index 0000000000..cb33e6a3f1
--- /dev/null
+++ b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/cfg/node/UnaryOperationNode.java
@@ -0,0 +1,45 @@
+package org.checkerframework.dataflow.cfg.node;
+
+import com.sun.source.tree.UnaryTree;
+import java.util.Collection;
+import java.util.Collections;
+import org.checkerframework.javacutil.InternalUtils;
+
+/**
+ * A node for a postfix or an unary expression.
+ *
+ * <p>For example:
+ *
+ * <pre>
+ *   <em>operator</em> <em>expressionNode</em>
+ *
+ *   <em>expressionNode</em> <em>operator</em>
+ * </pre>
+ *
+ * @author charleszhuochen
+ */
+public abstract class UnaryOperationNode extends Node {
+
+    protected final UnaryTree tree;
+    protected final Node operand;
+
+    public UnaryOperationNode(UnaryTree tree, Node operand) {
+        super(InternalUtils.typeOf(tree));
+        this.tree = tree;
+        this.operand = operand;
+    }
+
+    public Node getOperand() {
+        return this.operand;
+    }
+
+    @Override
+    public UnaryTree getTree() {
+        return tree;
+    }
+
+    @Override
+    public Collection<Node> getOperands() {
+        return Collections.singletonList(getOperand());
+    }
+}