handle.cpp

Thinking in C++ 2nd edition source code which are all the cores of the book Thinking in C++ second e

//: C05:Handle.cpp {O}
// From Thinking in C++, 2nd Edition
// at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Handle implementation
#include <cstdlib>
#include "../require.h"
#include "Handle.h"
using namespace std;

// Define Handle's implementation:
struct Handle::cheshire {
  int i;
};

void Handle::initialize() {
  smile = (cheshire*)malloc(sizeof(cheshire));
  require(smile != 0);
  smile->i = 0;
}

void Handle::cleanup() {
  free(smile);
}

int Handle::read() {
  return smile->i;
}

void Handle::change(int x) {
  smile->i = x;
} ///:~