Added data contents of AST types

ast/inc/NodeBase.h

@@ -0,0 +1,65 @@
+#include <LXC.h>
+
+namespace LXC::AST
+{
+    // Enum to track which node it was created as //
+    enum class NodeType
+    {
+        // General nodes //
+
+        Identifier,
+        FunctionCall,
+
+        IntLiteral,
+        Operation,
+
+        // Variable nodes //
+
+        Var_Declare,
+        Var_Assign,
+        Var_Access,
+
+        // Control flow nodes //
+
+        IfBranch,
+        ReturnVal
+
+    };
+
+    // Base class of all AST nodes //
+    class Node
+    {
+        public:
+            // Virtual deconstructor for safe-polymorphism //
+            virtual ~Node() = default;
+
+            // Allows external access to find what the type is //
+            NodeType Type() const { return m_Type; }
+
+        protected:
+            // Stops the base type being created //
+            Node(NodeType _type)
+                : m_Type(_type)
+            {}
+
+            // Stores the type for polymorphism //
+            const NodeType m_Type;
+    };
+
+    // Nodes that can return values inherit from this instead //
+    class NodeValue : public Node
+    {
+        protected:
+            NodeValue(NodeType _type)
+                : Node(_type)
+            {}
+    };
+
+    // Returns a pointer to the actual type of the node //
+    template<typename T>
+        requires std::is_base_of_v<Node, T>
+    inline T* As(const Node& base)
+    {
+        return dynamic_cast<const T*>(base);
+    }
+}