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

libs/dope/linkedlist.cpp

@@ -0,0 +1,56 @@
+#include "linkedlist.hpp"
+
+DopeLinkedList::DopeLinkedList(){
+  for(int i = 0; i < MAX_DOPE_NODES; ++i){
+    nodes[i].Reset();
+  }
+  head = &nodes[0];
+}
+
+DopeNode::DopeNode(int init_data){
+  data = init_data;
+  next = NULL;
+  state = NodeState::UnInitialized;
+}
+
+DopeNode::DopeNode(){
+  Reset();
+}
+
+void DopeNode::Reset(){
+  this->data = 0;
+  this->next = NULL;
+  this->state = NodeState::UnInitialized;
+}
+
+void DopeLinkedList::AppendData(int init_data){
+  DopeNode* new_node = head;
+  DopeNode* node = head;
+  // Find next free slot and allocate it for the new node
+  for(int i=0; i < MAX_DOPE_NODES; ++i){
+    if(nodes[i].GetState() == NodeState::UnInitialized){
+      new_node = &nodes[i];
+      new_node->SetNext(NULL);
+      new_node->SetState(NodeState::Initialized);
+      new_node->SetData(init_data);
+      break;
+    }
+  }
+
+  if(head == new_node){
+    // Just set first node, nothing else to do
+    return;
+  }
+
+  // Find last node in linked list
+  if ((head->GetNext() == NULL) && (head->GetState() == NodeState::Initialized)){
+    // Special case, only one node so far
+    head->SetNext(new_node);
+  } else {
+    while(node->GetNext() != NULL){
+      node = node->GetNext();
+    }
+    node->SetNext(new_node);
+  }
+
+}