LXR qemu/include/qapi/qmp/qlist.h

   1/*
   2 * QList Module
   3 *
   4 * Copyright (C) 2009 Red Hat Inc.
   5 *
   6 * Authors:
   7 *  Luiz Capitulino <lcapitulino@redhat.com>
   8 *
   9 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
  10 * See the COPYING.LIB file in the top-level directory.
  11 */
  12
  13#ifndef QLIST_H
  14#define QLIST_H
  15
  16#include "qapi/qmp/qobject.h"
  17#include "qapi/qmp/qnum.h"
  18#include "qemu/queue.h"
  19
  20typedef struct QListEntry {
  21    QObject *value;
  22    QTAILQ_ENTRY(QListEntry) next;
  23} QListEntry;
  24
  25typedef struct QList {
  26    QObject base;
  27    QTAILQ_HEAD(,QListEntry) head;
  28} QList;
  29
  30#define qlist_append(qlist, obj) \
  31        qlist_append_obj(qlist, QOBJECT(obj))
  32
  33/* Helpers for int, bool, and string */
  34#define qlist_append_int(qlist, value) \
  35        qlist_append(qlist, qnum_from_int(value))
  36#define qlist_append_bool(qlist, value) \
  37        qlist_append(qlist, qbool_from_bool(value))
  38#define qlist_append_str(qlist, value) \
  39        qlist_append(qlist, qstring_from_str(value))
  40
  41#define QLIST_FOREACH_ENTRY(qlist, var)             \
  42        for ((var) = ((qlist)->head.tqh_first);     \
  43            (var);                                  \
  44            (var) = ((var)->next.tqe_next))
  45
  46static inline QObject *qlist_entry_obj(const QListEntry *entry)
  47{
  48    return entry->value;
  49}
  50
  51QList *qlist_new(void);
  52QList *qlist_copy(QList *src);
  53void qlist_append_obj(QList *qlist, QObject *obj);
  54void qlist_iter(const QList *qlist,
  55                void (*iter)(QObject *obj, void *opaque), void *opaque);
  56QObject *qlist_pop(QList *qlist);
  57QObject *qlist_peek(QList *qlist);
  58int qlist_empty(const QList *qlist);
  59size_t qlist_size(const QList *qlist);
  60QList *qobject_to_qlist(const QObject *obj);
  61void qlist_destroy_obj(QObject *obj);
  62
  63static inline const QListEntry *qlist_first(const QList *qlist)
  64{
  65    return QTAILQ_FIRST(&qlist->head);
  66}
  67
  68static inline const QListEntry *qlist_next(const QListEntry *entry)
  69{
  70    return QTAILQ_NEXT(entry, next);
  71}
  72
  73#endif /* QLIST_H */
  74