/tags/Root-branch-php-utl/SWIG/Examples/python/exceptshadow/example.h

 1/* File : example.h */
 2
 3// A simple exception
 4class EmptyError { };
 5class FullError { 
 6 public:
 7  int maxsize;
 8  FullError(int m) : maxsize(m) { }
 9};
10
11#if defined(_MSC_VER)
12  #pragma warning(disable: 4290) // C++ exception specification ignored except to indicate a function is not __declspec(nothrow)
13#endif
14
15template<typename T> class Queue {
16  int maxsize;
17  T   *items;
18  int nitems;
19  int last;
20 public: 
21  Queue(int size) {
22    maxsize = size;
23    items = new T[size];
24    nitems = 0;
25    last = 0;
26  }
27  ~Queue() {
28    delete [] items;
29  }
30  void enqueue(T x) throw(FullError) {
31    if (nitems == maxsize) {
32      throw FullError(maxsize);
33    }
34    items[last] = x;
35    last = (last + 1) % maxsize;
36    nitems++;
37  }
38  T dequeue()  {
39    T x;
40    if (nitems == 0) throw EmptyError();
41    x = items[(last + maxsize - nitems) % maxsize];
42    nitems--;
43    return x;
44  }
45  int length() {
46    return nitems;
47  }
48};
49
50
51#if defined(_MSC_VER)
52  #pragma warning(default: 4290) // C++ exception specification ignored except to indicate a function is not __declspec(nothrow)
53#endif
54