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qapi: Add feature flags to enum members

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This is quite similar to commit 84ab008687 "qapi: Add feature flags to
struct members", only for enums instead of structs.

Special feature flag 'deprecated' is silently ignored there.  This is
okay only because it will be implemented shortly.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20211025042405.3762351-3-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Markus Armbruster 2021-10-25 06:24:02 +02:00
parent 75ecee7262
commit b6c18755e4
13 changed files with 57 additions and 14 deletions
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16
docs/devel/qapi-code-gen.rst
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@ -200,7 +200,9 @@ Syntax::
'*if': COND,
'*features': FEATURES }
ENUM-VALUE = STRING
| { 'name': STRING, '*if': COND }
| { 'name': STRING,
'*if': COND,
'*features': FEATURES }
Member 'enum' names the enum type.
@ -706,8 +708,10 @@ QEMU shows a certain behaviour.
Special features
~~~~~~~~~~~~~~~~
Feature "deprecated" marks a command, event, or struct member as
deprecated. It is not supported elsewhere so far.
Feature "deprecated" marks a command, event, enum value, or struct
member as deprecated. It is not supported elsewhere so far.
Interfaces so marked may be withdrawn in future releases in accordance
with QEMU's deprecation policy.
Naming rules and reserved names
@ -1157,7 +1161,8 @@ and "variants".
"members" is a JSON array describing the object's common members, if
any. Each element is a JSON object with members "name" (the member's
name), "type" (the name of its type), and optionally "default". The
name), "type" (the name of its type), "features" (a JSON array of
feature strings), and "default". The latter two are optional. The
member is optional if "default" is present. Currently, "default" can
only have value null. Other values are reserved for future
extensions. The "members" array is in no particular order; clients
@ -1234,7 +1239,8 @@ The SchemaInfo for an enumeration type has meta-type "enum" and
variant member "members".
"members" is a JSON array describing the enumeration values. Each
element is a JSON object with member "name" (the member's name). The
element is a JSON object with member "name" (the member's name), and
optionally "features" (a JSON array of feature strings). The
"members" array is in no particular order; clients must search the
entire array when learning whether a particular value is supported.