These functions provide matrix sparse management.

For more information, you can look at the tutorial_matrixsparse_page.

Functions
Eina_Matrixsparse *	eina_matrixsparse_new (unsigned long rows, unsigned long cols, void(free_func)(void user_data, void cell_data), const void user_data)
	Creates a new Sparse Matrix.
void	eina_matrixsparse_free (Eina_Matrixsparse *m)
	Frees resources allocated to Sparse Matrix.
void	eina_matrixsparse_size_get (const Eina_Matrixsparse m, unsigned long rows, unsigned long *cols)
	Gets the current size of Sparse Matrix.
Eina_Bool	eina_matrixsparse_size_set (Eina_Matrixsparse *m, unsigned long rows, unsigned long cols)
	Resizes the Sparse Matrix.
Eina_Bool	eina_matrixsparse_cell_idx_get (const Eina_Matrixsparse m, unsigned long row, unsigned long col, Eina_Matrixsparse_Cell *cell)
	Gets the cell reference inside Sparse Matrix.
void *	eina_matrixsparse_cell_data_get (const Eina_Matrixsparse_Cell *cell)
	Gets data associated with given cell reference.
void *	eina_matrixsparse_data_idx_get (const Eina_Matrixsparse *m, unsigned long row, unsigned long col)
	Gets data associated with given cell given its indexes.
Eina_Bool	eina_matrixsparse_cell_position_get (const Eina_Matrixsparse_Cell cell, unsigned long row, unsigned long *col)
	Gets position (indexes) of the given cell.
Eina_Bool	eina_matrixsparse_cell_data_replace (Eina_Matrixsparse_Cell cell, const void data, void **p_old)
	Changes cell reference value without freeing the possibly existing old value.
Eina_Bool	eina_matrixsparse_cell_data_set (Eina_Matrixsparse_Cell cell, const void data)
	Changes cell value freeing the possibly existing old value.
Eina_Bool	eina_matrixsparse_data_idx_replace (Eina_Matrixsparse m, unsigned long row, unsigned long col, const void data, void **p_old)
	Changes cell value without freeing the possibly existing old value, using indexes.
Eina_Bool	eina_matrixsparse_data_idx_set (Eina_Matrixsparse m, unsigned long row, unsigned long col, const void data)
	Changes cell value freeing the possibly existing old value, using indexes.
Eina_Bool	eina_matrixsparse_row_idx_clear (Eina_Matrixsparse *m, unsigned long row)
	Clears (erases all cells) of row given its index.
Eina_Bool	eina_matrixsparse_column_idx_clear (Eina_Matrixsparse *m, unsigned long col)
	Clears (erases all cells) of column given its index.
Eina_Bool	eina_matrixsparse_cell_idx_clear (Eina_Matrixsparse *m, unsigned long row, unsigned long col)
	Clears (erases) cell given its indexes.
Eina_Bool	eina_matrixsparse_cell_clear (Eina_Matrixsparse_Cell *cell)
	Clears (erases) cell given its reference.
Eina_Iterator *	eina_matrixsparse_iterator_new (const Eina_Matrixsparse *m)
	Creates a new iterator over existing matrix cells.
Eina_Iterator *	eina_matrixsparse_iterator_complete_new (const Eina_Matrixsparse *m)
	Creates a new iterator over all matrix cells.
Typedefs
typedef struct _Eina_Matrixsparse	Eina_Matrixsparse
typedef struct _Eina_Matrixsparse_Row	Eina_Matrixsparse_Row
typedef struct _Eina_Matrixsparse_Cell	Eina_Matrixsparse_Cell

Typedef Documentation

Eina_Matrixsparse

Type for a generic sparse matrix.

Eina_Matrixsparse_Cell

Type for a generic sparse matrix cell, opaque for users.

Eina_Matrixsparse_Row

Type for a generic sparse matrix row, opaque for users.

Function Documentation

Eina_Bool eina_matrixsparse_cell_clear ( Eina_Matrixsparse_Cell * cell )

Clears (erases) cell given its reference.

Parameters:

cell	The cell reference, must not be `NULL`.

Returns:: EINA_TRUE on success, EINA_FALSE on failure.

Warning:: Cells, rows or columns are not reference counted and thus after this call any reference might be invalid if instance were freed.

Note:: This call might delete container column and row if this cell was the last remainder.

Since :: 2.3

void* eina_matrixsparse_cell_data_get ( const Eina_Matrixsparse_Cell * cell )

Gets data associated with given cell reference.

Parameters:

cell	Given cell reference, must not be `NULL`.

Returns:: Data associated with given cell.

See also:: eina_matrixsparse_cell_idx_get(); eina_matrixsparse_data_idx_get()

Since :: 2.3

Eina_Bool eina_matrixsparse_cell_data_replace	(	Eina_Matrixsparse_Cell *	cell,
		const void *	data,
		void **	p_old
	)

Changes cell reference value without freeing the possibly existing old value.

Parameters:

cell	The cell reference, must not be `NULL`.
data	New data to set.
p_old	Returns the old value intact (not freed).

Returns:: EINA_TRUE on success, EINA_FALSE otherwise (cell is NULL).

See also:: eina_matrixsparse_cell_data_set(); eina_matrixsparse_data_idx_replace()

Since :: 2.3

Eina_Bool eina_matrixsparse_cell_data_set	(	Eina_Matrixsparse_Cell *	cell,
		const void *	data
	)

Changes cell value freeing the possibly existing old value.

In contrast to eina_matrixsparse_cell_data_replace(), this function will call free_func() on existing value.

Parameters:

cell	The cell reference, must not be `NULL`.
data	New data to set.

Returns:: EINA_TRUE on success, EINA_FALSE otherwise (cell is NULL).

See also:: eina_matrixsparse_cell_data_replace(); eina_matrixsparse_data_idx_set()

Since :: 2.3

Eina_Bool eina_matrixsparse_cell_idx_clear	(	Eina_Matrixsparse *	m,
		unsigned long	row,
		unsigned long	col
	)

Clears (erases) cell given its indexes.

Existing cell will be cleared with free_func() given to eina_matrixsparse_new().

Parameters:

m	The sparse matrix to operate on.
row	The new number of row to clear.
col	The new number of column to clear.

Returns:: EINA_TRUE on success, EINA_FALSE on failure. It is considered success if did not exist but index is inside matrix size.

Warning:: Cells, rows or columns are not reference counted and thus after this call any reference might be invalid if instance were freed.

Note:: This call might delete container column and row if this cell was the last remainder.

Since :: 2.3

Eina_Bool eina_matrixsparse_cell_idx_get	(	const Eina_Matrixsparse *	m,
		unsigned long	row,
		unsigned long	col,
		Eina_Matrixsparse_Cell **	cell
	)

Gets the cell reference inside Sparse Matrix.

Parameters:

m	The sparse matrix to operate on.
row	The new number of row to clear.
col	The new number of column to clear.
cell	Pointer to return cell reference, if any exists.

Returns:: 1 on success, 0 on failure. It is considered success if did not exist but index is inside matrix size, in this case *cell == NULL

See also:: eina_matrixsparse_cell_data_get(); eina_matrixsparse_data_idx_get()

Since :: 2.3

Eina_Bool eina_matrixsparse_cell_position_get	(	const Eina_Matrixsparse_Cell *	cell,
		unsigned long *	row,
		unsigned long *	col
	)

Gets position (indexes) of the given cell.

Parameters:

cell	The cell reference, must not be `NULL`.
row	Where to store cell row number, may be `NULL`.
col	Where to store cell column number, may be `NULL`.

Returns:: EINA_TRUE on success, EINA_FALSE otherwise (cell is NULL).

Since :: 2.3

Eina_Bool eina_matrixsparse_column_idx_clear	(	Eina_Matrixsparse *	m,
		unsigned long	col
	)

Clears (erases all cells) of column given its index.

Existing cells will be cleared with free_func() given to eina_matrixsparse_new().

Parameters:

m	The sparse matrix to operate on.
col	The new number of column to clear.

Returns:: EINA_TRUE on success, EINA_FALSE on failure. It is considered success if column had no cells filled. Failure is asking for clear column outside matrix size.

Warning:: Cells, rows or columns are not reference counted and thus after this call any reference might be invalid if instance were freed.

Since :: 2.3

void* eina_matrixsparse_data_idx_get	(	const Eina_Matrixsparse *	m,
		unsigned long	row,
		unsigned long	col
	)

Gets data associated with given cell given its indexes.

Parameters:

m	The sparse matrix to operate on.
row	The new number of row to clear.
col	The new number of column to clear.

Returns:: Data associated with given cell or NULL if nothing is associated.

See also:: eina_matrixsparse_cell_idx_get(); eina_matrixsparse_cell_data_get()

Since :: 2.3

Eina_Bool eina_matrixsparse_data_idx_replace	(	Eina_Matrixsparse *	m,
		unsigned long	row,
		unsigned long	col,
		const void *	data,
		void **	p_old
	)

Changes cell value without freeing the possibly existing old value, using indexes.

Parameters:

m	The sparse matrix, must not be `NULL`.
row	The row number to set the value.
col	The column number to set the value.
data	New data to set.
p_old	returns the old value intact (not freed).

Returns:: EINA_TRUE on success, EINA_FALSE otherwise (m is NULL, indexes are not valid).

See also:: eina_matrixsparse_cell_data_replace(); eina_matrixsparse_data_idx_set()

Since :: 2.3

Eina_Bool eina_matrixsparse_data_idx_set	(	Eina_Matrixsparse *	m,
		unsigned long	row,
		unsigned long	col,
		const void *	data
	)

Changes cell value freeing the possibly existing old value, using indexes.

In contrast to eina_matrixsparse_data_idx_replace(), this function will call free_func() on existing value.

Parameters:

m	The sparse matrix, must not be `NULL`.
row	The row number to set the value.
col	The column number to set the value.
data	New data to set.

Returns:: EINA_TRUE on success, EINA_FALSE otherwise (m is NULL, indexes are not valid).

See also:: eina_matrixsparse_cell_data_replace()

Since :: 2.3

void eina_matrixsparse_free ( Eina_Matrixsparse * m )

Frees resources allocated to Sparse Matrix.

Parameters:

m	The Sparse Matrix instance to free, must not be `NULL`.

Since :: 2.3

Eina_Iterator* eina_matrixsparse_iterator_complete_new ( const Eina_Matrixsparse * m )

Creates a new iterator over all matrix cells.

Unlike eina_matrixsparse_iterator_new() this one will report all matrix cells, even those that are still empty (holes). These will be reported as dummy cells that contains no data.

Be aware that iterating a big matrix (1000x1000) will call your function that number of times (1000000 times in that case) even if your matrix have no elements at all!

The iterator data will be the cell reference, one may query current position with eina_matrixsparse_cell_position_get() and cell value with eina_matrixsparse_cell_data_get(). If cell is empty then the reference will be a dummy/placeholder, thus setting value with eina_matrixsparse_cell_data_set() will leave pointer unreferenced.

Parameters:

m	The Sparse Matrix reference, must not be `NULL`.

Returns:: A new iterator.

Warning:: If the matrix structure changes then the iterator becomes invalid! That is, if you add or remove cells this iterator behavior is undefined and your program may crash!

Since :: 2.3

Eina_Iterator* eina_matrixsparse_iterator_new ( const Eina_Matrixsparse * m )

Creates a new iterator over existing matrix cells.

This is a cheap walk, it will just report existing cells and holes in the sparse matrix will be ignored. That means the reported indexes will not be sequential.

The iterator data will be the cell reference, one may query current position with eina_matrixsparse_cell_position_get() and cell value with eina_matrixsparse_cell_data_get().

Parameters:

m	The Sparse Matrix reference, must not be `NULL`.

Returns:: A new iterator.

Warning:: If the matrix structure changes then the iterator becomes invalid! That is, if you add or remove cells this iterator behavior is undefined and your program may crash!

Since :: 2.3

Eina_Matrixsparse* eina_matrixsparse_new	(	unsigned long	rows,
		unsigned long	cols,
		void()(void user_data, void *cell_data)	free_func,
		const void *	user_data
	)

Creates a new Sparse Matrix.

Parameters:

rows	Number of rows in matrix. Operations with rows greater than this value will fail.
cols	Number of columns in matrix. Operations with columns greater than this value will fail.
free_func	Used to delete cell data contents, used by eina_matrixsparse_free(), eina_matrixsparse_size_set(), eina_matrixsparse_row_idx_clear(), eina_matrixsparse_column_idx_clear(), eina_matrixsparse_cell_idx_clear() and possible others.
user_data	Given to free_func as first parameter.

Returns:: Newly allocated matrix, or NULL if allocation failed.

Since :: 2.3

Eina_Bool eina_matrixsparse_row_idx_clear	(	Eina_Matrixsparse *	m,
		unsigned long	row
	)

Clears (erases all cells) of row given its index.

Existing cells will be cleared with free_func() given to eina_matrixsparse_new().

Parameters:

m	The sparse matrix to operate on.
row	The new number of row to clear.

Returns:: EINA_TRUE on success, EINA_FALSE on failure. It is considered success if row had no cells filled. Failure is asking for clear row outside matrix size.

Warning:: Cells, rows or columns are not reference counted and thus after this call any reference might be invalid if instance were freed.

Since :: 2.3

void eina_matrixsparse_size_get	(	const Eina_Matrixsparse *	m,
		unsigned long *	rows,
		unsigned long *	cols
	)

Gets the current size of Sparse Matrix.

The given parameters are guaranteed to be set if they're not NULL, even if this function fails (ie: m is not a valid matrix instance).

Parameters:

m	The sparse matrix to operate on.
rows	Returns the number of rows, may be `NULL`. If m is invalid, returned value is zero, otherwise it's a positive integer.
cols	Returns the number of columns, may be `NULL`. If m is invalid, returned value is zero, otherwise it's a positive integer.

Since :: 2.3

Eina_Bool eina_matrixsparse_size_set	(	Eina_Matrixsparse *	m,
		unsigned long	rows,
		unsigned long	cols
	)

Resizes the Sparse Matrix.

This will resize the sparse matrix, possibly freeing cells on rows and columns that will cease to exist.

Parameters:

m	The sparse matrix to operate on.
rows	The new number of rows, must be greater than zero.
cols	The new number of columns, must be greater than zero.

Returns:: EINA_TRUE on success, EINA_FALSE on failure.

Warning:: Cells, rows or columns are not reference counted and thus after this call any reference might be invalid if instance were freed.

Since :: 2.3

Functions

Typedefs

Typedef Documentation

Function Documentation