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[PATCH 04/22] qapi: Convert simple union InputEvent to flat one
From: |
Markus Armbruster |
Subject: |
[PATCH 04/22] qapi: Convert simple union InputEvent to flat one |
Date: |
Mon, 13 Sep 2021 14:39:14 +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>
---
qapi/ui.json | 42 ++++++++++++++++++++++++++++++++++++++----
1 file changed, 38 insertions(+), 4 deletions(-)
diff --git a/qapi/ui.json b/qapi/ui.json
index a6b0dce876..fe10d69431 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -960,6 +960,38 @@
'data' : { 'axis' : 'InputAxis',
'value' : 'int' } }
+##
+# @InputEventKind:
+#
+# Since: 6.1
+##
+{ 'enum': 'InputEventKind',
+ 'data': [ 'key', 'btn', 'rel', 'abs' ] }
+
+##
+# @InputKeyEventWrapper:
+#
+# Since: 6.1
+##
+{ 'struct': 'InputKeyEventWrapper',
+ 'data': { 'data': 'InputKeyEvent' } }
+
+##
+# @InputBtnEventWrapper:
+#
+# Since: 6.1
+##
+{ 'struct': 'InputBtnEventWrapper',
+ 'data': { 'data': 'InputBtnEvent' } }
+
+##
+# @InputMoveEventWrapper:
+#
+# Since: 6.1
+##
+{ '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
- [PATCH 00/22] qapi: Remove simple unions from the schema language, Markus Armbruster, 2021/09/13
- [PATCH 02/22] qapi: Stop enforcing "type name should not end in 'Kind', Markus Armbruster, 2021/09/13
- [PATCH 06/22] qapi: Convert simple union MemoryDeviceInfo to flat one, Markus Armbruster, 2021/09/13
- [PATCH 10/22] qapi: Convert simple union TransactionAction to flat one, Markus Armbruster, 2021/09/13
- [PATCH 05/22] qapi: Convert simple union TpmTypeOptions to flat one, Markus Armbruster, 2021/09/13
- [PATCH 04/22] qapi: Convert simple union InputEvent to flat one,
Markus Armbruster <=
- [PATCH 12/22] test-qobject-input-visitor: Wean off UserDefListUnion, Markus Armbruster, 2021/09/13
- [PATCH 11/22] tests/qapi-schema: Prepare for simple union UserDefListUnion removal, Markus Armbruster, 2021/09/13
- [PATCH 16/22] tests/qapi-schema: Simple union UserDefListUnion is now unused, drop, Markus Armbruster, 2021/09/13