#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
#include <stdio.h>
#include <stdlib.h>
#include "nsIDOMParser.h"

int main (int argc, char* argv[]) {
  nsresult rv;

  nsIServiceManager *servMgr;

  rv = NS_InitXPCOM2(&servMgr, nsnull, nsnull);
  if (NS_FAILED(rv)) return rv;

  {
    // CreateInstance with result
    {
      nsCOMPtr<nsIDOMParser> domParser;
      domParser = do_CreateInstance("@mozilla.org/xmlextras/domparser;1", &rv);
      NS_ENSURE_SUCCESS(rv, rv);
    }

    // CreateInstance without result
    {
      nsCOMPtr<nsIDOMParser> domParser;
      domParser = do_CreateInstance("@mozilla.org/xmlextras/domparser;1");
      NS_ENSURE_TRUE(domParser, NS_ERROR_OUT_OF_MEMORY);
    }

    // CreateInstance in ctor with result
    {
      nsCOMPtr<nsIDOMParser> domParser(do_CreateInstance("@mozilla.org/xmlextras/domparser;1", &rv));
      NS_ENSURE_SUCCESS(rv, rv);
    }

    // CreateInstance in ctor without result
    {
      nsCOMPtr<nsIDOMParser> domParser(do_CreateInstance("@mozilla.org/xmlextras/domparser;1"));
      NS_ENSURE_TRUE(domParser, NS_ERROR_OUT_OF_MEMORY);
    }

  }

  if (servMgr) {
    rv = NS_ShutdownXPCOM(servMgr);
  }

  return rv;
}