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Diffstat (limited to 'src/cairo-list-inline.h')
| -rwxr-xr-x | src/cairo-list-inline.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/src/cairo-list-inline.h b/src/cairo-list-inline.h new file mode 100755 index 000000000..d00f40e98 --- /dev/null +++ b/src/cairo-list-inline.h @@ -0,0 +1,209 @@ +/* cairo - a vector graphics library with display and print output + * + * Copyright © 2009 Chris Wilson + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + * + * The Original Code is the cairo graphics library. + * + * The Initial Developer of the Original Code is Chris Wilson. + * + * Contributor(s): + * Chris Wilson <chris@chris-wilson.co.uk> + * + */ + +#ifndef CAIRO_LIST_INLINE_H +#define CAIRO_LIST_INLINE_H + +#include "cairo-list-private.h" + +#define cairo_list_entry(ptr, type, member) \ + cairo_container_of(ptr, type, member) + +#define cairo_list_first_entry(ptr, type, member) \ + cairo_list_entry((ptr)->next, type, member) + +#define cairo_list_last_entry(ptr, type, member) \ + cairo_list_entry((ptr)->prev, type, member) + +#define cairo_list_foreach(pos, head) \ + for (pos = (head)->next; pos != (head); pos = pos->next) + +#define cairo_list_foreach_entry(pos, type, head, member) \ + for (pos = cairo_list_entry((head)->next, type, member);\ + &pos->member != (head); \ + pos = cairo_list_entry(pos->member.next, type, member)) + +#define cairo_list_foreach_entry_safe(pos, n, type, head, member) \ + for (pos = cairo_list_entry ((head)->next, type, member),\ + n = cairo_list_entry (pos->member.next, type, member);\ + &pos->member != (head); \ + pos = n, n = cairo_list_entry (n->member.next, type, member)) + +#define cairo_list_foreach_entry_reverse(pos, type, head, member) \ + for (pos = cairo_list_entry((head)->prev, type, member);\ + &pos->member != (head); \ + pos = cairo_list_entry(pos->member.prev, type, member)) + +#define cairo_list_foreach_entry_reverse_safe(pos, n, type, head, member) \ + for (pos = cairo_list_entry((head)->prev, type, member),\ + n = cairo_list_entry (pos->member.prev, type, member);\ + &pos->member != (head); \ + pos = n, n = cairo_list_entry (n->member.prev, type, member)) + +#ifdef CAIRO_LIST_DEBUG +static inline void +_cairo_list_validate (const cairo_list_t *link) +{ + assert (link->next->prev == link); + assert (link->prev->next == link); +} +static inline void +cairo_list_validate (const cairo_list_t *head) +{ + cairo_list_t *link; + + cairo_list_foreach (link, head) + _cairo_list_validate (link); +} +static inline cairo_bool_t +cairo_list_is_empty (const cairo_list_t *head); +static inline void +cairo_list_validate_is_empty (const cairo_list_t *head) +{ + assert (head->next == NULL || (cairo_list_is_empty (head) && head->next == head->prev)); +} +#else +#define _cairo_list_validate(link) +#define cairo_list_validate(head) +#define cairo_list_validate_is_empty(head) +#endif + +static inline void +cairo_list_init (cairo_list_t *entry) +{ + entry->next = entry; + entry->prev = entry; +} + +static inline void +__cairo_list_add (cairo_list_t *entry, + cairo_list_t *prev, + cairo_list_t *next) +{ + next->prev = entry; + entry->next = next; + entry->prev = prev; + prev->next = entry; +} + +static inline void +cairo_list_add (cairo_list_t *entry, cairo_list_t *head) +{ + cairo_list_validate (head); + cairo_list_validate_is_empty (entry); + __cairo_list_add (entry, head, head->next); + cairo_list_validate (head); +} + +static inline void +cairo_list_add_tail (cairo_list_t *entry, cairo_list_t *head) +{ + cairo_list_validate (head); + cairo_list_validate_is_empty (entry); + __cairo_list_add (entry, head->prev, head); + cairo_list_validate (head); +} + +static inline void +__cairo_list_del (cairo_list_t *prev, cairo_list_t *next) +{ + next->prev = prev; + prev->next = next; +} + +static inline void +cairo_list_del (cairo_list_t *entry) +{ + __cairo_list_del (entry->prev, entry->next); + cairo_list_init (entry); +} + +static inline void +cairo_list_move (cairo_list_t *entry, cairo_list_t *head) +{ + cairo_list_validate (head); + __cairo_list_del (entry->prev, entry->next); + __cairo_list_add (entry, head, head->next); + cairo_list_validate (head); +} + +static inline void +cairo_list_move_tail (cairo_list_t *entry, cairo_list_t *head) +{ + cairo_list_validate (head); + __cairo_list_del (entry->prev, entry->next); + __cairo_list_add (entry, head->prev, head); + cairo_list_validate (head); +} + +static inline void +cairo_list_swap (cairo_list_t *entry, cairo_list_t *other) +{ + __cairo_list_add (entry, other->prev, other->next); + cairo_list_init (other); +} + +static inline cairo_bool_t +cairo_list_is_first (const cairo_list_t *entry, + const cairo_list_t *head) +{ + cairo_list_validate (head); + return entry->prev == head; +} + +static inline cairo_bool_t +cairo_list_is_last (const cairo_list_t *entry, + const cairo_list_t *head) +{ + cairo_list_validate (head); + return entry->next == head; +} + +static inline cairo_bool_t +cairo_list_is_empty (const cairo_list_t *head) +{ + cairo_list_validate (head); + return head->next == head; +} + +static inline cairo_bool_t +cairo_list_is_singular (const cairo_list_t *head) +{ + cairo_list_validate (head); + return head->next == head || head->next == head->prev; +} + +#endif /* CAIRO_LIST_INLINE_H */ |