// -*- coding: utf-8 -*-
// Time-stamp: <array2di.hpp   4 nov 2016 08:35:17>

// Implementation of 2d m×n arrays with an array for each line

#ifndef ARRAY2DI_H
#define ARRAY2DI_H

#include "array2d.hpp"

class Array2di : public Array2d {
public:
  // Constructors
  // Default constructor with no allocation
  Array2di() : Array2d(0, 0), p(nullptr) {};
  // Constructor from dimensions
  Array2di(int m, int n);
  // Constructor from dimensions and a value for initialization
  Array2di(int m, int n, double v);
  // Copy constructor
  Array2di(const Array2di& a);
  // Assignment operator
  // This declaration is ncessary in order to inherit the
  // assigment operator of the class Array2d.  Otherwise, the
  // compile generates a default assigment operator
  // Array2dd& operator=(const Array2dd& a)
  using Array2d::operator=;
  // Access operator to a non-constant array
  Line operator[](int i) { return Line(p[i], ncol); }
  // Access operator to a constant array
  const Line operator[](int i) const { return Line(p[i], ncol); }
  // Destructor
  ~Array2di() { free(); }
private:
  // Alloc the array
  virtual void alloc() override;
  // Free the array
  virtual void free() override;   
  // Copy from another array
  // + nlin and ncol must be valid
  // + arrays must be allocated
  void copy(double** t);
  // Array of pointers
  // Each p[i] contains a pointer to the array for line i.
  double** p;			
};

#endif