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#ifndef matrixcon_hpp_
#define matrixcon_hpp_
#include <vector>
#include "ring.hpp"
#include <utility>
class MatrixGenerator;
/**
* \ingroup matrices
*/
class MatrixConstructor
{
const Ring *R;
VECTOR(vec) entries;
const FreeModule *rows;
const FreeModule *cols; // If cols is given at the beginning, this is used.
// If this is immutable, no changes are allowed, other than to replace the
// entire thing.
bool cols_frozen; // Once this is set, no more modifications to the 'cols'
// are allowed. In particular, if the 'source' is set at
// the beginning via the constructor, and that free module is
// immutable, then no more changes are allowed.
const int *deg;
void compute_column_degree(int i);
public:
MatrixConstructor();
MatrixConstructor(const FreeModule *target, int ncols);
MatrixConstructor(const FreeModule *target,
const FreeModule *source,
const int *deg = 0);
// The copy constructor just does the default thing: copy over all items.
void append(vec v);
void append(vec v, const int *deg);
void set_entry(int r, int c, ring_elem a);
void set_column(int c, vec v);
void compute_column_degrees(); /* Takes into account the matrix degree */
void set_column_degree(int i, const int *deg);
void set_matrix_degree(const int *deg);
Matrix *to_matrix();
void debugDisplay() const;
};
#endif
// Local Variables:
// compile-command: "make -C $M2BUILDDIR/Macaulay2/e "
// indent-tabs-mode: nil
// End:
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