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- // Template array classes
- /*
-
- Copyright (C) 1996 John W. Eaton
-
- This file is part of Octave.
-
- Octave is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- Octave is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- for more details.
-
- You should have received a copy of the GNU General Public License
- along with Octave; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
-
- #if !defined (octave_Array2_h)
- #define octave_Array2_h 1
-
- #if defined (__GNUG__)
- #pragma interface
- #endif
-
- #include <cassert>
- #include <cstdlib>
-
- #include "Array.h"
- #include "lo-error.h"
-
- class idx_vector;
-
- // Two dimensional array class.
-
- template <class T>
- class Array2 : public Array<T>
- {
- protected:
-
- Array2 (T *d, int n, int m) : Array<T> (d, n*m)
- {
- d1 = n;
- d2 = m;
- set_max_indices (2);
- }
-
- public:
-
- // These really need to be protected (and they will be in the
- // future, so don't depend on them being here!), but they can't be
- // until template friends work correctly in g++.
-
- int d1;
- int d2;
-
- Array2 (void) : Array<T> ()
- {
- d1 = 0;
- d2 = 0;
- set_max_indices (2);
- }
-
- Array2 (int n, int m) : Array<T> (n*m)
- {
- d1 = n;
- d2 = m;
- set_max_indices (2);
- }
-
- Array2 (int n, int m, const T& val) : Array<T> (n*m, val)
- {
- d1 = n;
- d2 = m;
- set_max_indices (2);
- }
-
- Array2 (const Array2<T>& a) : Array<T> (a)
- {
- d1 = a.d1;
- d2 = a.d2;
- set_max_indices (2);
- }
-
- Array2 (const Array<T>& a, int n, int m) : Array<T> (a)
- {
- d1 = n;
- d2 = m;
- set_max_indices (2);
- }
-
- ~Array2 (void) { }
-
- Array2<T>& operator = (const Array2<T>& a)
- {
- if (this != &a && rep != a.rep)
- {
- Array<T>::operator = (a);
- d1 = a.d1;
- d2 = a.d2;
- }
-
- return *this;
- }
-
- int dim1 (void) const { return d1; }
- int dim2 (void) const { return d2; }
-
- int rows (void) const { return d1; }
- int cols (void) const { return d2; }
- int columns (void) const { return d2; }
-
- // No checking of any kind, ever.
-
- T& xelem (int i, int j) { return Array<T>::xelem (d1*j+i); }
- T xelem (int i, int j) const { return Array<T>::xelem (d1*j+i); }
-
- // Note that the following element selection methods don't use
- // xelem() because they need to make use of the code in
- // Array<T>::elem() that checks the reference count.
-
- T& checkelem (int i, int j)
- {
- if (i < 0 || j < 0 || i >= d1 || j >= d2)
- {
- (*current_liboctave_error_handler)
- ("T& Array2<T>::checkelem (%d, %d): range error", i, j);
- static T foo;
- return foo;
- }
- else
- return Array<T>::elem (d1*j+i);
- }
-
- T& elem (int i, int j) { return Array<T>::elem (d1*j+i); }
-
- #if defined (BOUNDS_CHECKING)
- T& operator () (int i, int j) { return checkelem (i, j); }
- #else
- T& operator () (int i, int j) { return elem (i, j); }
- #endif
-
- T checkelem (int i, int j) const
- {
- if (i < 0 || j < 0 || i >= d1 || j >= d2)
- {
- (*current_liboctave_error_handler)
- ("T Array2<T>::checkelem (%d, %d): range error", i, j);
- return T ();
- }
- else
- return Array<T>::elem (d1*j+i);
- }
-
- T elem (int i, int j) const { return Array<T>::elem (d1*j+i); }
-
- #if defined (BOUNDS_CHECKING)
- T operator () (int i, int j) const { return checkelem (i, j); }
- #else
- T operator () (int i, int j) const { return elem (i, j); }
- #endif
-
- T range_error (const char *fcn, int i, int j) const;
- T& range_error (const char *fcn, int i, int j);
-
- void resize (int n, int m);
- void resize (int n, int m, const T& val);
-
- Array2<T>& insert (const Array2<T>& a, int r, int c);
-
- #ifdef HEAVYWEIGHT_INDEXING
- void maybe_delete_elements (idx_vector& i, idx_vector& j);
-
- Array2<T> value (void);
-
- Array2<T> index (idx_vector& i) const;
-
- Array2<T> index (idx_vector& i, idx_vector& j) const;
- #endif
- };
-
- template <class LT, class RT>
- int assign (Array2<LT>& lhs, const Array2<RT>& rhs);
-
- #endif
-
- /*
- ;;; Local Variables: ***
- ;;; mode: C++ ***
- ;;; End: ***
- */
-