const iterator + separate iterator from list.h

c_os/user/lib/Iterator.h

@@ -0,0 +1,40 @@
+#ifndef __Iterator_Include_H_
+#define __Iterator_Include_H_
+
+// This iterator works for structures where the elements are adjacent in memory.
+// For things like LinkedList, the operator++ has to be overriden to implement the traversal.
+template<typename T>
+class Iterator {
+public:
+    using Type = T;
+
+protected:
+    Type* ptr;
+
+public:
+    Iterator(Type* ptr) : ptr(ptr) {}
+
+    // I only implement the least necessary operators
+    virtual Iterator& operator++() {
+        this->ptr = this->ptr + 1;
+        return *this;
+    }
+
+    Type* operator->() {
+        return this->ptr;
+    }
+
+    Type& operator*() {
+        return *this->ptr;
+    }
+
+    bool operator==(const Iterator& other) const {
+        return this->ptr == other.ptr;
+    }
+
+    bool operator!=(const Iterator& other) const {
+        return !(*this == other);  // Use our == implementation
+    }
+};
+
+#endif