#include <iostream>

#include <functional>

#include <algorithm>

#include <memory>

#include "Options.h"

#include "Reactor.h"

#include "Expression_Tree_Event_Handler.h"

int

main (int argc, char *argv[])

{

// Create Options singleton to parse command line options.

std::auto_ptr<Options> options (Options::instance ());

// Parse the command-line options.

if (!options->parse_args (argc, argv))

return 0;

// Create Reactor singleton to run application event loop.

std::auto_ptr<Reactor> reactor (Reactor::instance ());

// Dynamically allocate the appropriate event handler based on the

// command-line options.

Expression_Tree_Event_Handler *tree_event_handler =

Expression_Tree_Event_Handler::make_handler (options->verbose ());

// Register the event handler with the reactor. The reactor is

// responsible for triggering the deletion of the event handler

reactor->register_input_handler (tree_event_handler);

// Run the reactor's event loop, which drives all the processing via

// callbacks to registered event handlers.

reactor->run_event_loop ();

// The std::auto_ptr destructors automatically destroy the

// singletons.

return 0;

}