setup project for assignment 3

Assignment_3/lib/CMakeLists.txt

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+add_library(sets STATIC Node.h Node.cpp Set.h Set.cpp )

Assignment_3/lib/Node.cpp

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+#include <mutex>
+#include <lib/Node.h>
+
+Node::Node(int element){
+    data = element;
+    dummy = false;
+    deleted = false;
+}
+
+Node* Node::Dummy(){
+    Node* n = new Node(0);
+    n->dummy = true;
+    return n;
+}
+
+bool Node::is_smaller_than(Node* n) {
+    return this->is_smaller_than(n->data);
+}
+
+bool Node::is_smaller_than(int n) {
+    // Everything is smaller than a dummy -> false
+    return  this->data < n && !this->dummy;
+}
+
+bool Node::is_equal(int n) {
+    // Dummies are not equal to any number -> false
+    return  this->data == n && !this->dummy;
+}
+
+void Node::lock() {
+    this->mut.lock();
+} 
+void Node::unlock() {
+    this->mut.unlock();
+}
+
+bool Node::is_dummy() {
+    return dummy;
+}
+
+int Node::get_data(){
+    return data;
+}

Assignment_3/lib/Node.h

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+#pragma once
+
+#include <mutex>
+
+class Node { 
+    protected:
+        int data; 
+        bool dummy;
+        std::mutex mut;
+
+    public:
+        Node* next;
+        bool deleted;
+
+        Node(int element);
+        static Node* Dummy();
+        //  Dummy();
+
+        void lock();
+        void unlock();
+        bool is_smaller_than(int n);
+        bool is_smaller_than(Node* n);
+        bool is_equal(int n);
+        bool is_dummy();
+        int get_data();
+};

Assignment_3/lib/Set.cpp

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+#include "Set.h"
+#include "Node.h"
+
+#include <iostream>
+#include<sstream>
+
+Set::Set(std::string _name){
+    name = _name;
+    first = Node::Dummy();
+    first->next = Node::Dummy();
+}
+
+bool Set::add(int element) { return false; }
+bool Set::rmv(int element) { return false; }
+bool Set::ctn(int element) { return false; }
+std::string Set::get_name() { return name; }
+
+std::string Set::print_set(){
+    Node* c = this->first->next;
+    std::stringstream ss;
+    while (!c->is_dummy()) {
+        ss << c->get_data() << " ";
+        c = c->next;
+    }
+    return ss.str();
+}

Assignment_3/lib/Set.h

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+#pragma once
+
+#include "Node.h"
+
+class Set {
+    protected:
+        std::string name;
+        Set(std::string _name);
+        Node* first;
+    public:
+        bool add(int element);
+        bool rmv(int element);
+        bool ctn(int element);
+        std::string get_name();
+        std::string print_set();
+};