/simpletypesystem/trunk

#ifndef __GAME_MATRIX__

#define __GAME_MATRIX__

#include <string.h>

#include <stdlib.h>

#include <stdbool.h>

#include <stdio.h>

#include "defs.h"

#include "DynamicArray.h"

/**

 * @file

 * @defgroup SMatrix SMatrix

 * @addtogroup SMatrix

 * @{

 * A SMatrix is a 2d, rectangular array.

 */

/**

 * An SMatrix is an opaque data structure representing a simple rectangular

 * matrix.

 *

 * An SMatrix Stores pointers to data, and not the data itself.

 * So when using functions like s_matrix_realloc, it only copies the pointers

 * over from the old SMatrix to the new.

 */

typedef struct SMatrix SMatrix;

#define S_MATRIX(k) ((SMatrix *) (k))

/**

 * convenience structure to store type into and name of a tuple.

 * Example:

 @code{.c}

typedef enum {

  MY_TUPLE_ENUM_NAME,

  MY_TUPLE_ENUM_AGE,

  MY_TUPLE_ENUM_HEIGHT,

  MY_TUPLE_ENUM_END_OF_TUPLE

} MyRowInfoEnum;

const SMatrixRowInformation my_row_info[] = {

  {"Name", S_TYPE_STRING, NULL, NULL, NULL},

  {"Age", S_TYPE_UINT, NULL, NULL, NULL},

  {"Height", S_TYPE_UINT, NULL, NULL, NULL}

  {NULL, NULL, NULL, NULL, NULL}

};

 @endcode

 * The information can then be used like this:

 @code{.c}

for (int i = 0, i <= s_matrix_get_last_tuple_n (my_matrix), i++) {

  spointer tmp_tuple = s_matrix_get_tuple (my_matrix, i);

  for (int j = 0, j <= MY_TUPLE_ENUM_END_OF_TUPLE, j++) {

    s_print ("%s: %s", my_row_info[j], tmp_tuple[j]);

  }

  s_print ("\n");

  free (tmp_tuple);

}

 @endcode

 *

 */

typedef struct SMatrixRowInformation {

  schar *       name; /**< Name of the row. */

  FreeFunc      free_func; /**< Free function to be used with complex objects.*/

  FuncPointer   to_json; /**< Used to get some sort of JSON information out of

                              a complex object. (Can be NULL). */

  FuncPointer   from_json; /**< When constructing an object of this type from

                            * some JSON representation of the complex object.

                            * This functons should be used. (Can be NULL)*/

  SType         type; /**< Type of the row. */

} SMatrixRowInformation;

/**

 * Create a new SMatrix.

 *

 * @param width The width of the matrix. This can be seen as the number of

 *              columns each tuple has.

 * @param height The initial height of the matrix. The initial number of rows

 *               the matrix has.

 */

SMatrix *

s_matrix_new (size_t width,

              size_t height,

              SMatrixRowInformation * row_information);

/**

 * Free a SMatrix.

 *

 * @param self The SMatrix to free.

 * @param free_data Should the data also be freed with the data structure?

 */

void

s_matrix_free (SMatrix * self, sboolean free_data);

/**

 * Reallocate a SMatrix from one tuple width to an other.

 *

 * @warning The new tuple size must be larger then the last, or it will be

 * turnicated, but not freed.

 *

 * @note You need to free the old SMatrix yourself

 * <em>(but not the data stored)</em>, this is to avoid memory leaks.

 */

SMatrix *

s_matrix_realloc (SMatrix * self,

                  size_t width,

                  SMatrixRowInformation * new_row_information);

/**

 * Get element y in tuple x.

 *

 * Equivalent to matrix[x][y] would be in static 2d arrays.

 */

spointer

s_matrix_get (SMatrix * self,

              size_t x,

              size_t y);

/**

 * Returns the number representing the last tuple.

 * IE: it the last tuple has the x position of 10, this will return 10.

 *

 * @param self The SMatrix to get the x coordinate of the last tuple.

 *

 * @return The x coordinate of the last tuple.

 *

 * @note The value way be wrong.

 */

size_t

s_matrix_get_last_tuple_n (SMatrix self);

/**

 * @brief Set data at a point [x,y] in the array.

 *

 * @param self The SMatrix to operate on.

 * @param x The x coordinates of where to put the data.

 *          (What tuple to put it in).

 * @param y The y coordinates to put the data in.

 *          (What position in the tuple to put it in).

 * @param data The data to be placed in the SMatrix.

 */

void

s_matrix_set (SMatrix * self,

              size_t x,

              size_t y,

              spointer data);

/**

 * Gets tuple x in SMatrix self.

 * 

 * @param self the matrix to perform the operation on.

 * @param x the tuple to get.

 *

 * @return a pointer to an array congaing painters to the data in the tuple.

 *

 * @see s_matrix_get_tuple_as_dynamic_array()

 */

spointer *

s_matrix_get_tuple (SMatrix * self,

                    size_t x);

/**

 * Append a tuple to a SMatrix.

 *

 * @param self The SMatrix to perform the operation on.

 * @param tuple The <em>allocated</em> data tuple to be copied into the SMatrix.

 *

 * @note This function will consume (free) allocated data for the tuple.

 *

 * @note The function assumes that the tuple has the same width as specified

 *       during construction or reallocation. Any dangling pointers will

 *       <em>not</em> be freed.

 */

void

s_matrix_append (SMatrix * self,

                 spointer * tuple);

/**

 * Get tuple x as a SDynamicArray.

 *

 * @param self the SMatrix to perform the operation on.

 * @param x the tuple to get.

 *

 * @return An SDynamicArray containing pointers to the data in the tuple.

 *

 * @see s_matrix_get_tuple

 */

SDynamicArray *

s_matrix_get_tuple_as_dynamic_array (SMatrix * self,

                                     size_t x);

/**

 * This iterates over each tuple. giving the tuple as the item in the

 * callback function.

 */

void

s_matrix_for_each (SMatrix * self,

                  ForEachFunc callback,

                  spointer data);

/**

 * @TODO

 * @warning NOT IMPLIED

 *

 * Get the matrix as JSON.

 * @param self The SMatrix to get the JSON from.

 *

 * @return a null-terminated JSON string representing the matrix.

 *

 * @note This only works on primative types. complex types (IE: structs and

 * such) can not be gotten any information from.

 *

 *The outputted JSON will have the format:

 @code{.js}

{

  { // Tuple

    { // Item

      name: "Name"

      type: "STRING",

      data: "John Smith"

    },

    { // Item

      name: "Age",

      type: "UINT",

      data: 32,

    },

    { // Item

      name: "Height",

      type: "UINT",

      data: 189

    }

  },

  { //tuple

    // ...

  }

}

 @endcode

 */

char *

s_matrix_serialize_json (SMatrix * self);

/**

 * @TODO

 * @warning NOT IMPLIED

 *

 * Deselialize JSON into an SMatrix.

 *

 * @param self The SMatrix to write to.

 * @param data the JSON data to be deselialised.

 *

 * @note The SMatrix must be empty, but initialised.

 *

 * @note As with s_matrix_serialize_json(), only primative types work. Complex

 * types will not work.

 */

void

s_matrix_deserialize_json (SMatrix * self,

                           const schar * data);

/** @} */

#endif /*__GAME_MATRIX__ */