7 files changed, 67 insertions, 19 deletions

diff --git a/Circuit.cpp b/Circuit.cpp
index f6229f1..cf6312e 100644
--- a/Circuit.cpp
+++ b/Circuit.cpp
@@ -10,10 +10,26 @@ void Circuit::create(string label, vector<string> nodes) {
 }
 
 void Circuit::new_node(string label, string type) {
+	if (nodes.find(label) != nodes.end()) return; // TODO: exception!
+
+	Node * node = NodeFactory::create(type);
+	if (node == nullptr) return; // TODO: exception?
+
+	nodes[label] = node;
+
 	printf("[%s] (%s)\n", label.c_str(), type.c_str());
 }
 
 void Circuit::new_net(string label, string connection) {
+	// TODO: instance Net
+	// TODO: connect Net to connection
 	printf("[%s] -> %s\n", label.c_str(), connection.c_str());
 }
 
+Circuit::~Circuit() {
+	for (auto const & n : nodes)
+		delete n.second;
+	for (auto const & n : nets)
+		delete n.second;
+}
+
diff --git a/Circuit.h b/Circuit.h
index 249301d..5fd8d23 100644
--- a/Circuit.h
+++ b/Circuit.h
@@ -2,6 +2,10 @@
 
 #include <string>
 #include <vector>
+#include <map>
+
+#include "Node.h"
+#include "Net.h"
 
 using std::string;
 using std::vector;
@@ -9,11 +13,15 @@ using std::vector;
 class Circuit {
 public:
 	Circuit() = default;
-	virtual ~Circuit() = default;
+	virtual ~Circuit();
 
 public:
 	void create(string label, vector<string> nodes);
 	void new_node(string label, string type);
 	void new_net(string label, string node);
+
+private:
+	std::map<string, Node *> nodes = {};
+	std::map<string, Net *> nets = {};
 };
 
diff --git a/GateAnd.cpp b/GateAnd.cpp
index e48b21c..dc65353 100644
--- a/GateAnd.cpp
+++ b/GateAnd.cpp
@@ -1,15 +1,8 @@
-#include <iostream>
-
 #include "GateAnd.h"
 
-using std::cout;
-using std::endl;
-
 GateAnd GateAnd::instance(GateAnd::type);
 
-GateAnd::GateAnd(const char * type) : Node(type) {
-	cout << __PRETTY_FUNCTION__ << endl;
-}
+GateAnd::GateAnd(const char * type) : Node(type) { }
 
 // Concrete Nodes:
 void GateAnd::compare() {
@@ -37,3 +30,10 @@ void GateAnd::compare() {
 //    this->output->setLevel(new_out);
 // }
 }
+
+GateAnd::GateAnd(const GateAnd * prototype) : Node() { }
+
+GateAnd * GateAnd::clone() const {
+	return new GateAnd(this);
+}
+
diff --git a/GateAnd.h b/GateAnd.h
index 40e3927..5eedc07 100644
--- a/GateAnd.h
+++ b/GateAnd.h
@@ -4,11 +4,13 @@
 
 class GateAnd : public Node {
 public:
-	GateAnd(const char * type);
+	GateAnd(const GateAnd * prototype);
 	virtual ~GateAnd() = default;
 	virtual void compare();
+	virtual GateAnd * clone() const;
 
 private:
+	GateAnd(const char * type);
 	constexpr static const char * type = "and";
 	static GateAnd instance;
 };
diff --git a/Node.h b/Node.h
index 7f2d03d..43cfc6c 100644
--- a/Node.h
+++ b/Node.h
@@ -11,14 +11,19 @@ using std::vector;
 
 class Node : Observer {
 public:
-	Node(const char * type);
+	Node() = default;
 	virtual ~Node() = default;
+	virtual Node * clone() const = 0;
+
+public:
 	void update();
 	virtual void addInput(Net *);
 	virtual void setOutput(Net *);
 	virtual void compare() = 0;
 
 protected:
+	Node(const char * type);
+
 	string label;
 
 	vector<Net *> inputs;
diff --git a/NodeFactory.cpp b/NodeFactory.cpp
index 4824734..c9d4f20 100644
--- a/NodeFactory.cpp
+++ b/NodeFactory.cpp
@@ -4,26 +4,27 @@
 
 #include "NodeFactory.h"
 
+string NodeFactory::normalize_type(string type) {
+	std::ranges::transform(type, type.begin(), [] (unsigned char c) { return std::tolower(c); });
+	return type;
+}
+
 bool NodeFactory::has_type(const char * type) {
 	return has_type(string(type));
 }
 
 bool NodeFactory::has_type(string type) {
-	std::ranges::transform(type, type.begin(), [] (unsigned char c) { return std::tolower(c); });
-
-	static NodeFactoryMap & map = get_map();
-
-	return map.find(type) != map.end();
+	return find_type(type) != nullptr;
 }
 
 void NodeFactory::assign(const char * _type, const Node * node) {
 	static NodeFactoryMap & map = get_map();
 	string type = _type;
+	type = normalize_type(type);
 
-	std::ranges::transform(type, type.begin(), [] (unsigned char c) { return std::tolower(c); });
-
-	if (has_type(type)) return;
+	if (has_type(type)) return; // TODO: exception?
 
+	// printf("map[\"%s\"] = %p\n", type.c_str(), node);
 	map[type] = node;
 }
 
@@ -32,3 +33,16 @@ NodeFactoryMap & NodeFactory::get_map() {
 	return map;
 }
 
+const Node * NodeFactory::find_type(string type) {
+	static NodeFactoryMap & map = get_map();
+	type = normalize_type(type);
+	if (!map.contains(type)) return nullptr;
+	return map.find(type)->second;
+}
+
+Node * NodeFactory::create(string type) {
+	const Node * prototype = find_type(type);
+	if (prototype == nullptr) return nullptr;
+	return prototype->clone();
+}
+
diff --git a/NodeFactory.h b/NodeFactory.h
index 7790b4a..3c8c4f4 100644
--- a/NodeFactory.h
+++ b/NodeFactory.h
@@ -17,10 +17,13 @@ public:
 public:
 	static bool has_type(const char * type);
 	static bool has_type(string type);
+	static Node * create(string type);
 
 private:
 	static void assign(const char * type, const Node * node);
 	static NodeFactoryMap & get_map();
+	static string normalize_type(string type);
+	static const Node * find_type(string type);
 
 private:
 	friend Node;