[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH 2/2] qapi: Generate enum count as definition in gen_enum_look
From: |
Juan Quintela |
Subject: |
Re: [PATCH 2/2] qapi: Generate enum count as definition in gen_enum_lookup() |
Date: |
Mon, 27 Feb 2023 13:41:34 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) |
Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
> QAPI's gen_enum() generates QAPI enum values and the number
> of this values (as foo__MAX).
> The number of entries in an enum type is not part of the
> enumerated values, but we generate it as such. See for
> example:
>
> typedef enum OnOffAuto {
> ON_OFF_AUTO_AUTO,
> ON_OFF_AUTO_ON,
> ON_OFF_AUTO_OFF,
> ON_OFF_AUTO__MAX, <---------
> } OnOffAuto;
>
> Instead of declaring the enum count as the last enumerated
> value, #define it, so it is not part of the enum. The previous
> example becomes:
>
> typedef enum OnOffAuto {
> ON_OFF_AUTO_AUTO,
> ON_OFF_AUTO_ON,
> ON_OFF_AUTO_OFF,
> #define ON_OFF_AUTO__MAX 3 <---------
> } OnOffAuto;
>
> Since Clang enables the -Wswitch warning by default [*], remove all
> pointless foo__MAX cases in switch statement, in order to avoid:
>
> audio/audio.c:2231:10: error: case value not in enumerated type
> 'AudioFormat' (aka 'enum AudioFormat') [-Wswitch]
> case AUDIO_FORMAT__MAX:
> ^
> ui/input.c:233:14: error: case value not in enumerated type 'KeyValueKind'
> (aka 'enum KeyValueKind') [-Wswitch]
> case KEY_VALUE_KIND__MAX:
> ^
> ...
>
> [*] https://clang.llvm.org/docs/DiagnosticsReference.html#wswitch
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
This other is very nice.
Thanks, Juan.