/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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//  If you do not agree to this license, do not download, install,
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//
//                        Intel License Agreement
//                For Open Source Computer Vision Library
//
// Copyright (C) 2000, Intel Corporation, all rights reserved.
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//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
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//     this list of conditions and the following disclaimer.
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//M*/

#ifndef OCT_CV_SEQ_H
#define OCT_CV_SEQ_H

#include "cxcore.h"
#include "cvtypes.h"


/** class to make sequence iteration nicer */
template<class T>
class CvTypedSeqReader : public CvSeqReader {
  int pos;
public:
  CvTypedSeqReader( const CvSeq * seq ){
    cvStartReadSeq( seq, this );
    pos = 0;
  }
  T * current(){
    return (T*) this->ptr;
  }
  void next(){
    CV_NEXT_SEQ_ELEM( this->seq->elem_size, *this );
    pos++;
  }
  bool valid(){
    return pos<this->seq->total;
  }
};

template<class T>
class CvTypedSeq : public CvSeq {
public:
  static CvTypedSeq<T> * cast(CvSeq * seq){
    return (CvTypedSeq<T> *) seq;
  }
  T * __paren (int i){
    return (T *) cvGetSeqElem(this, i);
  }
  void __paren_asgn (int i, T * obj){
    T * ptr = this->__paren(i);
    memcpy(ptr, obj, sizeof(T));
  }

  T * __brace (int i){
    return __paren(i);
  }
  void __brace_asgn (int i, T * obj){
    __paren_asgn(i, obj);
  }

  void append(T * obj){
    cvSeqPush( this, obj );
  }
  T * pop(){
    T * obj = new T;
    cvSeqPop( this, obj );
    return obj;
  }
};

template<class T, int size=2>
struct CvTuple {
  T val[2];
  const T & __paren(int i){
    return val[i];
  }
  void __paren_asgn(int i, T * obj){
    val[i] = *obj;
  }

  const T & __brace(int i){
    return __paren(i);
  }
  void __brace_asgn(int i, T * obj){
    return __paren_asgn(i,obj);
  }

};

#endif  //OCT_CV_SEQ_H