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kc3-lang/kc3/libc3/set_cursor.c.in

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  • libc3/set_cursor.c.in 
  • /* c3
 * Copyright 2022,2023 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_cursor.c.in NAME=_NAME$ TYPE=_TYPE$ */
#include <assert.h>
#include <stdlib.h>
#include "types.h"

void
set_cursor_init___NAME$ (s_set___NAME$ *set, s_set_cursor___NAME$ *c)
{
  assert(set);
  assert(c);
  c->set = set;
  c->i = 0;
  c->item = NULL;
  c->count = 0;
}

static s_set_item___NAME$ *
set_cursor_next_index___NAME$ (s_set_cursor___NAME$ *c)
{
  assert(c);
  assert(c->set);
  while (c->i < c->set->max &&
         ! c->item) {
    c->item = c->set->items[c->i];
    c->i++;
  }
  if (c->item) {
    c->count++;
    return c->item;
  }
  return NULL;
}

s_set_item___NAME$ *
set_cursor_next___NAME$ (s_set_cursor___NAME$ *c)
{
  assert(c);
  if (c->count == c->set->count)
    return NULL;
  if (c->item)
    c->item = c->item->next;
  if (!c->item)
    return set_cursor_next_index___NAME$(c);
  c->count++;
  return c->item;
}