Added UnaryOpNode class

src/AST/UnaryOpNode.cpp

@@ -0,0 +1,10 @@
+#include "UnaryOpNode.h"
+
+UnaryOpNode::UnaryOpNode(std::shared_ptr<ExprNode> operand)
+    : operand(operand), ExprNode()
+{
+}
+
+UnaryOpNode::~UnaryOpNode()
+{
+}

src/AST/UnaryOpNode.h

@@ -0,0 +1,12 @@
+#pragma once
+#include "ExprNode.h"
+
+class UnaryOpNode : public ExprNode
+{
+  protected:
+    std::shared_ptr<ExprNode> operand;
+
+  public:
+    UnaryOpNode(std::shared_ptr<ExprNode> operand);
+    ~UnaryOpNode();
+};