diff --git a/AlgebraicDataflowArchitectureModel/src/java/ast/ASTNode.java b/AlgebraicDataflowArchitectureModel/src/java/ast/ASTNode.java
new file mode 100644
index 0000000..0d600e0
--- /dev/null
+++ b/AlgebraicDataflowArchitectureModel/src/java/ast/ASTNode.java
@@ -0,0 +1,13 @@
+package java.ast;
+
+public abstract class ASTNode {
+	private ASTNode parent;
+
+	public ASTNode getParent() {
+		return parent;
+	}
+
+	public void setParent(ASTNode parent) {
+		this.parent = parent;
+	}
+}