Throwable t = new Throwable();  // test code

    final Writer result = new StringWriter();
    final PrintWriter printWriter = new PrintWriter(result);
    t.printStackTrace(printWriter);
    result.toString();

trace_var:$variabileGlobale, proc{ print "variabileGlobale modificata al valore --> ", $variabileGlobale, " "}

def caller_method_name
    parse_caller(caller(2).first).last
end

def parse_caller(at)
    if /^(.+?):(\d+)(?::in `(.*)')?/ =~ at
        file = Regexp.last_match[1]
		line = Regexp.last_match[2].to_i
		method = Regexp.last_match[3]
		[file, line, method]
	end
end