qemu-e2k/include/qapi/util.h
Markus Armbruster c868876043 qapi: Generalize enum member policy checking
The code to check enumeration value policy can see special feature
flag 'deprecated' in QEnumLookup member flags[value].  I want to make
feature flag 'unstable' visible there as well, so I can add policy for
it.

Instead of extending flags[], replace it by @special_features (a
bitset of QapiSpecialFeature), because that's how special features get
passed around elsewhere.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-8-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-10-29 18:24:56 +02:00

59 lines
1.6 KiB
C

/*
* QAPI util functions
*
* Copyright Fujitsu, Inc. 2014
*
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#ifndef QAPI_UTIL_H
#define QAPI_UTIL_H
typedef enum {
QAPI_DEPRECATED,
} QapiSpecialFeature;
typedef struct QEnumLookup {
const char *const *array;
const unsigned char *const special_features;
const int size;
} QEnumLookup;
const char *qapi_enum_lookup(const QEnumLookup *lookup, int val);
int qapi_enum_parse(const QEnumLookup *lookup, const char *buf,
int def, Error **errp);
bool qapi_bool_parse(const char *name, const char *value, bool *obj,
Error **errp);
int parse_qapi_name(const char *name, bool complete);
/*
* For any GenericList @list, insert @element at the front.
*
* Note that this macro evaluates @element exactly once, so it is safe
* to have side-effects with that argument.
*/
#define QAPI_LIST_PREPEND(list, element) do { \
typeof(list) _tmp = g_malloc(sizeof(*(list))); \
_tmp->value = (element); \
_tmp->next = (list); \
(list) = _tmp; \
} while (0)
/*
* For any pointer to a GenericList @tail (usually the 'next' member of a
* list element), insert @element at the back and update the tail.
*
* Note that this macro evaluates @element exactly once, so it is safe
* to have side-effects with that argument.
*/
#define QAPI_LIST_APPEND(tail, element) do { \
*(tail) = g_malloc0(sizeof(**(tail))); \
(*(tail))->value = (element); \
(tail) = &(*(tail))->next; \
} while (0)
#endif