//: C05:Handle.cpp {O}

// From Thinking in C++, 2nd Edition

// Available at http://www.BruceEckel.com

// (c) Bruce Eckel 1999

// Copyright notice in Copyright.txt

// Handle implementation

#include "Handle.h"

#include "../require.h"



// Define Handle's implementation:

struct Handle::Cheshire {

  int i;

};



void Handle::initialize() {

  smile = new Cheshire();

  require(smile != 0);

  smile->i = 0;

}



void Handle::cleanup() {

  delete smile;

}



int Handle::read() {

  return smile->i;

}



void Handle::change(int x) {

  smile->i = x;

} ///:~