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/* Sequential list data type implemented by a linked list.
Copyright (C) 2006, 2009-2020 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2006.
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 3 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, see <https://www.gnu.org/licenses/>. */
/* Common code of gl_linked_list.c and gl_linkedhash_list.c. */
/* -------------------------- gl_list_t Data Type -------------------------- */
/* Concrete list node implementation, valid for this file only. */
struct gl_list_node_impl
{
#if WITH_HASHTABLE
struct gl_hash_entry h; /* hash table entry fields; must be first */
#endif
struct gl_list_node_impl *next;
struct gl_list_node_impl *prev;
const void *value;
};
/* Concrete gl_list_impl type, valid for this file only. */
struct gl_list_impl
{
struct gl_list_impl_base base;
#if WITH_HASHTABLE
/* A hash table: managed as an array of collision lists. */
struct gl_hash_entry **table;
size_t table_size;
#endif
/* A circular list anchored at root.
The first node is = root.next, the last node is = root.prev.
The root's value is unused. */
struct gl_list_node_impl root;
/* Number of list nodes, excluding the root. */
size_t count;
};
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