#include "input_gen.h"#include <cassert>Generator::Generator(sc_module_name name, char *datafile)  : sc_module(name){  assert(datafile != 0); // not null  in = new ifstream(datafile); // open file  assert(*in); // check that everything is OK  SC_THREAD(generate_thread);  sensors.initialize(0);}Generator::~Generator() { delete in; }void Generator::generate_thread(){  int sen;  for (;;) {    wait(4,SC_SEC); // generate new inputs every 5 seconds    *in >> sen; // read from file, 4 sensors, 1 means a car is coming, 0 means no car    sensors->write(sen);  }}