/simpletypesystem/trunk

/*

Copyright (c) 2013-2014 Gustav Hartvigsson

Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in

all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

THE SOFTWARE.

*/

#include "baseobject.h"

#include <stdlib.h>

#include <string.h>

#include <stdio.h>

/* ---------------------------

 * Concrete method definitions

 * These are implemented towards the end of this file.

 * ---------------------------

 */

void method_base_initialize (SObject * self);

void method_base_deinitialize (SObject * self);

void method_base_free (SObject * self);

int method_base_ref (SObject * self);

int method_base_unref (SObject * self);

int method_base_get_refcount (SObject * self);

char * method_base_to_string (SObject * self);

/* -----------------

 * Helper functions...

 * -----------------

 */

void s_object_set_initialize_method (SObject * self, void (* method)(SObject *)) {

  SObjectClass * klass = s_object_get_class (self);

  klass->initialize = method;

}

void s_object_set_free_method (SObject * self, void (* method)(SObject *)) {

  SObjectClass * klass = s_object_get_class (self);

  klass->free = method;

} 

void s_object_set_ref_method (SObject * self, int (* method)(SObject *)) {

  SObjectClass * klass = s_object_get_class (self);

  klass->ref = method;

}

void s_object_set_unref_method (SObject * self, int (* method)(SObject *)) {

  SObjectClass * klass = s_object_get_class (self);

  klass->unref = method;

}

void s_object_set_get_refcount_method (SObject * self, int (* method)(SObject *)) {

  SObjectClass * klass = s_object_get_class (self);

  klass->get_refcount = method;

}

void s_object_set_to_string_method (SObject * self, char * (*method)(SObject *)) {

  SObjectClass * klass = s_object_get_class (self);

  klass->to_string = method;

}

void s_object_initialize (SObject * self) {

  self->refcount = 1;

  s_object_set_deinitialize_method (self,method_base_deinitialize);

  s_object_set_initialize_method (self, method_base_initialize);

  s_object_set_free_method (self, method_base_free);

  s_object_set_ref_method (self, method_base_ref);

  s_object_set_unref_method (self, method_base_unref);

  s_object_set_get_refcount_method (self, method_base_get_refcount);

  s_object_set_to_string_method (self, method_base_to_string);

}

SObject * s_object_new () {

  fprintf (stderr, "s_object_new () should never be used.\n");

  SObject * self = malloc (sizeof (SObject));

  //allocate the class definition of the object.

  self->base_class = malloc (sizeof(SObjectClass));

  //initialize it.

  s_object_initialize (self);

  return self;

}

void s_object_free (SObject * self) {

  SObjectClass * klass = s_object_get_class (self);

  klass->free (self);

}

void * s_object_get_class (SObject * self) {

  return self->base_class;

}

void s_object_set_class (SObject * self, SObjectClass * klass) {

  self->base_class = klass;

}

int s_object_unref (SObject * self) {

  unsigned int ret = self->base_class->unref (self);

  return ret;

}

int s_object_ref (SObject * self) {

  unsigned int ret = self->base_class->ref (self);

  return ret;

}

/**

 * This function returns the current reference count without chaning it.

 */

int s_object_get_refcount (SObject * self) {

  unsigned int ret = self->base_class->get_refcount (self);

  return ret;

}

char * s_object_to_string (SObject * self) {

  char * ret = self->base_class->to_string (self);

  return ret;

}

/* -----------------

 * Contrete methods.

 * -----------------

 */

void method_base_deinitialize (SObject * self) { }

void method_base_initialize (SObject * self) { }

void method_base_free (SObject * self) {

  self->base_class->free (self);

}

int method_base_ref (SObject * self) {

  self->refcount = self->refcount + 1;

  return self->refcount;

}

int method_base_unref (SObject * self) {

  self->refcount = self->refcount - 1;

  if (self->refcount == 0) {

    self->base_class->free (self);

    return 0;

  }

  return self->refcount;

}

int method_base_get_refcount (SObject * self) {

  return self->refcount;

}

char * method_base_to_string (SObject * self) {

  char * ret_string = malloc (sizeof (char) * 32); // I am bad with maths..

  sprintf (ret_string, "References: %d ", self->base_class->get_refcount(self));

  return ret_string;

}