thodg/patchwork13/pw13/method.c

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• Hash : 94046104
  Author : Thomas de Grivel
  Date : 2020-02-24T15:19:27
  

  import from branch patchwork13-0.1 on SourceForge.net

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• pw13/method.c

• /*
    This is part of Patchwork13! the real-time data synthesis toolkit.
    http://patchwork13.sourceforge.net/
  
    pw13 - the patchwork13 core library
    Copyright (C) 2005 Thomas de Grivel <billitch@yahoo.fr>
    
    This program 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
    of the License, or (at your option) any later version.
    
    This program 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 this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  
  *
  
    method.h  -  Lists of methods
  
  */
  #include <stdlib.h>
  #include <string.h>
  #include "patch.h"
  #include "method.h"
  
  
  Pw13_Method * pw13_method_add (Pw13_MethodName **method_names,
  			       const char *name,
  			       Pw13_MethodFunc *f, void *object,
  			       void *method_param)
  {
    Pw13_MethodName *n = pw13_method_name_register (method_names, object, name);
    Pw13_Method *method = malloc (sizeof (Pw13_Method));
    Pw13_Method **prev = &n->methods;
    while (*prev)
      prev = &(*prev)->next;
    if (!method)
      exit (-1);
    method->name = n;
    method->param = method_param;
    method->func = f;
    method->next = NULL;
    *prev = method;
    return method;
  }
  
  
  void pw13_method_remove (Pw13_Method *method, Pw13_MethodName **method_names)
  {
    Pw13_MethodName *name = method->name;
    Pw13_Method **L = &name->methods;
    while (*L && *L != method)
      L = &(*L)->next;
    if (!*L) {
      fprintf (stderr, "pw13_method_remove: method not found !\n");
      exit (1);
    }
    *L = (*L)->next;
    free (method);
    if (name->methods == NULL)
      pw13_method_name_remove (name, method_names);
  }
  
  
  Pw13_MethodName ** pw13_method_name_find (Pw13_MethodName **method_names,
  					  const char *name)
  {
    Pw13_MethodName **L = method_names;
    while (*L && strcmp ((*L)->name, name))
      L = &(*L)->next;
    return L;
  }
  
  
  Pw13_MethodName * pw13_method_name_register (Pw13_MethodName **method_names,
  					     void *object, const char *name)
  {
    Pw13_MethodName **L = pw13_method_name_find (method_names, name);
    if (!*L) {
      *L = malloc (sizeof (Pw13_MethodName));
      if (!*L)
        exit (-1);
      (*L)->name = strdup (name);
      (*L)->object = object;
      (*L)->next = NULL;
      (*L)->methods = NULL;
    }
    return *L;
  }
  
  
  void pw13_method_name_remove (Pw13_MethodName *name,
  			      Pw13_MethodName **method_names)
  {
    Pw13_MethodName **L = method_names;
    while (*L && (*L) != name)
      L = &(*L)->next;
    *L = (*L)->next;
    if (name->methods) {
      fprintf (stderr, "pw13_method_name_remove: not empty !\n");
      exit (1);
    }
    free (name);
  }
  

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