c3-lang/c3/libc3/set.c.in

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• Hash : 6c584dd6
  Author : Thomas de Grivel
  Date : 2024-04-23T13:27:02
  CI :

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• libc3/set.c.in

• /* c3
   * Copyright 2022-2024 kmx.io <contact@kmx.io>
   *
   * Permission is hereby granted to use this software granted the above
   * copyright notice and this permission paragraph are included in all
   * copies and substantial portions of this software.
   *
   * THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
   * PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
   * AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
   * THIS SOFTWARE.
   */
  /* Gen from set.c.in NAME=_NAME$ TYPE=_TYPE$ */
  #include "alloc.h"
  #include "assert.h"
  #include "compare.h"
  #include "_NAME$.h"
  #include "set___NAME$.h"
  #include "set_item___NAME$.h"
  
  s_set_item___NAME$ *
  set_add___NAME$ (s_set___NAME$ *set, const _TYPE$ *data)
  {
    uw hash;
    assert(set);
    assert(data);
    if (! _NAME$_hash_uw(data, &hash)) {
      err_puts("set_add___NAME$: _NAME$_hash_uw");
      assert(! "set_add___NAME$: _NAME$_hash_uw");
      return NULL;
    }
    return set_add_h___NAME$(set, data, hash);
  }
  
  s_set_item___NAME$ *
  set_add_collision___NAME$ (s_set___NAME$ *set, const _TYPE$ *data, uw hash, s_set_item___NAME$ *item)
  {
    s_set_item___NAME$ *new_item;
    new_item = set_item_new___NAME$(data, hash, item->next);
    item->next = new_item;
    set->count++;
    set->collisions++;
    return new_item;
  }
  
  s_set_item___NAME$ *
  set_add_h___NAME$ (s_set___NAME$ *set, const _TYPE$ *data, uw hash)
  {
    uw h;
    s_set_item___NAME$ *i;
    assert(set);
    assert(data);
    if ((i = set_get_h___NAME$(set, data, hash)))
      return i;
    h = hash % set->max;
    if ((i = set->items[h]))
      return set_add_collision___NAME$(set, data, hash, i);
    if (! (i = set_item_new___NAME$(data, hash, NULL))) {
      err_puts("set_add_h___NAME$: set_item_new___NAME$");
      assert(! "set_add_h___NAME$: set_item_new___NAME$");
      return NULL;
    }
    set->items[h] = i;
    set->count++;
    return i;
  }
                   
  void
  set_clean___NAME$ (s_set___NAME$ *set)
  {
    uw i;
    assert(set);
    for (i = 0; i < set->max; i++) {
      set_item_delete_all___NAME$(set->items[i]);
    }
    free(set->items);
  }
  
  s_set_item___NAME$ *
  set_get___NAME$ (const s_set___NAME$ *set, const _TYPE$ *data)
  {
    uw hash;
    assert(set);
    assert(data);
    if (! _NAME$_hash_uw(data, &hash))
      return NULL;
    return set_get_h___NAME$(set, data, hash);
  }
  
  s_set_item___NAME$ *
  set_get_h___NAME$ (const s_set___NAME$ *set, const _TYPE$ *data, uw hash)
  {
    s_set_item___NAME$ *i;
    assert(set);
    assert(data);
    i = set_get_hash___NAME$(set, hash);
    while (i) {
      if (compare__NAME$(&i->data, data) == 0)
        return i;
      i = set_get_hash_next___NAME$(i);
    }
    return NULL;
  }
  
  s_set_item___NAME$ *
  set_get_hash___NAME$ (const s_set___NAME$ *set, uw hash)
  {
    uw h;
    s_set_item___NAME$ *i;
    assert(set);
    h = hash % set->max;
    i = set->items[h];
    while (i && i->hash != hash)
      i = i->next;
    return i;
  }
  
  s_set_item___NAME$ *
  set_get_hash_next___NAME$ (const s_set_item___NAME$ *item)
  {
    s_set_item___NAME$ *i;
    assert(item);
    i = item->next;
    while (i && i->hash != item->hash)
      i = i->next;
    return i;
  }
  
  s_set___NAME$ *
  set_init___NAME$ (s_set___NAME$ *set, uw max)
  {
    s_set___NAME$ tmp = {0};
    assert(set);
    assert(max > 0);
    tmp.max = max;
    tmp.items = alloc(max * sizeof(s_set_item___NAME$ *));
    if (! tmp.items)
      return NULL;
    tmp.count = 0;
    tmp.collisions = 0;
    *set = tmp;
    return set;
  }
  
  bool
  set_remove___NAME$ (s_set___NAME$ *set, const _TYPE$ *data)
  {
    s_set_item___NAME$ *item;
    if ((item = set_get___NAME$(set, data)))
      return set_remove_item___NAME$(set, item);
    return false;
  }
  
  bool
  set_remove_item___NAME$ (s_set___NAME$ *set, s_set_item___NAME$ *item)
  {
    sw h;
    s_set_item___NAME$ *i;
    s_set_item___NAME$ **j;
    s_set_item___NAME$ *k;
    assert(set);
    if (! item)
      return false;
    h = item->hash % set->max;
    j = set->items + h;
    while (*j && *j != item)
      j = &(*j)->next;
    if (!*j)
      return false;
    i = *j;
    k = i->next;
    set_item_delete___NAME$(i);
    *j = k;
    set->count--;
    if (set->items[h])
      set->collisions--;
    return true;
  }
  
  s_set___NAME$ *
  set_resize___NAME$ (s_set___NAME$ *set, uw max)
  {
    uw i;
    s_set_item___NAME$ *item;
    s_set___NAME$ n;
    if (set->max == max)
      return set;
    set_init___NAME$(&n, max);
    for (i = 0; i < set->max; i++) {
      item = set->items[i];
      while (item) {
        set_add_h___NAME$(&n, &item->data, item->hash);
        item = item->next;
      }
    }
    set_clean___NAME$(set);
    set->max = n.max;
    set->items = n.items;
    set->count = n.count;
    set->collisions = n.collisions;
    return set;
  }
  

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