more unknown work

Expression.cpp

@@ -0,0 +1,22 @@
+#include "Expression.h"
+#include <iostream>
+
+namespace jet {
+
+   Expression::Expression(coreutils::ZString &expression) : MString("zzz") {
+      std::cout << "Expression construction:" << expression << std::endl;
+//      if(expression.equals("true"))
+//        MString("true");
+//      else if(expression.equals("false"))
+//        MString("false");
+//      else if(expression.equals(""))
+//        MString("false");
+//      else
+//        MString("true");
+   }
+
+   Expression::~Expression() {
+      std::cout << "Expression destruction:" << getLength() << std::endl;
+   }
+
+}

Expression.h

@@ -0,0 +1,17 @@
+#ifndef __Expression_h__
+#define __expression_h__
+
+#include "MString.h"
+
+namespace  jet {
+
+   class Expression : public coreutils::MString {
+
+    public:
+      Expression(coreutils::ZString &expression);
+      virtual ~Expression();
+   };
+
+}
+
+#endif