handle.cpp

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//: 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;
} ///:~