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[PULL v2 04/25] qapi: Convert simple union InputEvent to flat one
From: |
Markus Armbruster |
Subject: |
[PULL v2 04/25] qapi: Convert simple union InputEvent to flat one |
Date: |
Mon, 27 Sep 2021 15:06:26 +0200 |
Simple unions predate flat unions. Having both complicates the QAPI
schema language and the QAPI generator. We haven't been using simple
unions in new code for a long time, because they are less flexible and
somewhat awkward on the wire.
To prepare for their removal, convert simple union InputEvent to an
equivalent flat one. Adds some boilerplate to the schema, which is a
bit ugly, but a lot easier to maintain than the simple union feature.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210917143134.412106-5-armbru@redhat.com>
---
qapi/ui.json | 42 ++++++++++++++++++++++++++++++++++++++----
1 file changed, 38 insertions(+), 4 deletions(-)
diff --git a/qapi/ui.json b/qapi/ui.json
index 9e04f9d65d..d7567ac866 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -960,6 +960,38 @@
'data' : { 'axis' : 'InputAxis',
'value' : 'int' } }
+##
+# @InputEventKind:
+#
+# Since: 2.0
+##
+{ 'enum': 'InputEventKind',
+ 'data': [ 'key', 'btn', 'rel', 'abs' ] }
+
+##
+# @InputKeyEventWrapper:
+#
+# Since: 2.0
+##
+{ 'struct': 'InputKeyEventWrapper',
+ 'data': { 'data': 'InputKeyEvent' } }
+
+##
+# @InputBtnEventWrapper:
+#
+# Since: 2.0
+##
+{ 'struct': 'InputBtnEventWrapper',
+ 'data': { 'data': 'InputBtnEvent' } }
+
+##
+# @InputMoveEventWrapper:
+#
+# Since: 2.0
+##
+{ 'struct': 'InputMoveEventWrapper',
+ 'data': { 'data': 'InputMoveEvent' } }
+
##
# @InputEvent:
#
@@ -975,10 +1007,12 @@
# Since: 2.0
##
{ 'union' : 'InputEvent',
- 'data' : { 'key' : 'InputKeyEvent',
- 'btn' : 'InputBtnEvent',
- 'rel' : 'InputMoveEvent',
- 'abs' : 'InputMoveEvent' } }
+ 'base': { 'type': 'InputEventKind' },
+ 'discriminator': 'type',
+ 'data' : { 'key' : 'InputKeyEventWrapper',
+ 'btn' : 'InputBtnEventWrapper',
+ 'rel' : 'InputMoveEventWrapper',
+ 'abs' : 'InputMoveEventWrapper' } }
##
# @input-send-event:
--
2.31.1
- [PULL v2 00/25] QAPI patches patches for 2021-09-25, Markus Armbruster, 2021/09/27
- [PULL v2 04/25] qapi: Convert simple union InputEvent to flat one,
Markus Armbruster <=
- [PULL v2 09/25] qapi: Convert simple union ImageInfoSpecific to flat one, Markus Armbruster, 2021/09/27
- [PULL v2 11/25] tests/qapi-schema: Prepare for simple union UserDefListUnion removal, Markus Armbruster, 2021/09/27
- [PULL v2 16/25] tests/qapi-schema: Simple union UserDefListUnion is now unused, drop, Markus Armbruster, 2021/09/27
- [PULL v2 19/25] tests/qapi-schema: Drop simple union __org.qemu_x-Union1, Markus Armbruster, 2021/09/27
- [PULL v2 05/25] qapi: Convert simple union TpmTypeOptions to flat one, Markus Armbruster, 2021/09/27
- [PULL v2 14/25] test-clone-visitor: Wean off UserDefListUnion, Markus Armbruster, 2021/09/27
- [PULL v2 17/25] tests/qapi-schema: Rewrite simple union TestIfUnion to be flat, Markus Armbruster, 2021/09/27
- [PULL v2 08/25] qapi: Convert simple union SocketAddressLegacy to flat one, Markus Armbruster, 2021/09/27
- [PULL v2 07/25] qapi: Convert simple union ChardevBackend to flat one, Markus Armbruster, 2021/09/27
- [PULL v2 03/25] qapi: Convert simple union KeyValue to flat one, Markus Armbruster, 2021/09/27