Initial commit of code for dopelib, and ch 1, 2, and 12

libs/dope/stacks.hpp

@@ -0,0 +1,59 @@
+#pragma once
+
+#include <stdlib.h>
+
+template <class T, size_t S>
+class DopeStack{
+  static const size_t size = S;
+  T stack[S];
+  T* head;
+  size_t occupancy;
+public:
+  DopeStack();
+  T pop();
+  void push(T item);
+  T peek();
+  size_t getOccupancy(){return occupancy;}
+  bool isEmpty();
+};
+
+// Implementation ____________________________________________________
+
+template <class T, size_t S>
+DopeStack<T, S>::DopeStack():
+  head (&stack[0]),
+  occupancy(0)
+{
+
+}
+
+template <class T, size_t S>
+T DopeStack<T, S>::pop(){
+  T ret = *head;
+  if(head != &stack[0]){
+    head--;
+  }
+
+  occupancy--;
+  return ret;
+}
+
+template <class T, size_t S>
+void DopeStack<T, S>::push(T item){
+  if(occupancy != 0){
+    head++;
+  }
+
+  *head = item;
+  occupancy++;
+}
+
+template <class T, size_t S>
+T DopeStack<T, S>::peek(){
+  return *head;
+}
+
+template <class T, size_t S>
+bool DopeStack<T, S>::isEmpty(){
+  return (occupancy == 0);
+}