added skeleton for parsing

simulator_SIC_XE/src/code.cpp

@@ -0,0 +1,20 @@
+#include "code.h"
+
+void Code::addLine(const std::shared_ptr<Node> &line)
+{
+    _lines.emplace_back(line);
+}
+
+const std::vector<std::shared_ptr<Node>> &Code::getLines() const
+{
+    return _lines;
+}
+
+const string Code::toString() const
+{
+    string result;
+    for (const auto& line : _lines) {
+        result += line->toString() + "\n";
+    }
+    return result;
+}

simulator_SIC_XE/src/mnemonic.cpp

@@ -0,0 +1,6 @@
+#include "mnemonic.h"
+
+string Mnemonic::toString() const
+{
+    return string();
+}

simulator_SIC_XE/src/node.cpp

@@ -0,0 +1,22 @@
+#include "node.h"
+
+string Node::getLabel() const
+{
+    return _label;
+}
+
+string Node::getComment() const
+{
+    return _comment;
+}
+
+std::shared_ptr<Mnemonic> Node::getMnemonic() const
+{
+    return _mnemonic;
+}
+
+string Node::toString() const
+{
+    return  (_label.length() > 0 ? _label + " " : "") + (_mnemonic ? _mnemonic->toString() + " ": "") + "." + _comment;
+}
+