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[Qemu-devel] [PATCH v6 16/23] qapi: Track all failures between visit_sta
From: |
Eric Blake |
Subject: |
[Qemu-devel] [PATCH v6 16/23] qapi: Track all failures between visit_start/stop |
Date: |
Wed, 25 Nov 2015 17:23:13 -0700 |
Inside the generated code between visit_start_struct() and
visit_end_struct(), we were blindly setting the error into
the caller's errp parameter. But a future patch to split
visit_end_struct() will require that we take action based
on whether an error has occurred, which requires us to track
all actions through a local err. Rewrite the visits to be
more in line with the other generated calls.
Signed-off-by: Eric Blake <address@hidden>
---
v6: based loosely on v5 7/46, but mostly a rewrite to get the last
generated code in the same form as all the others, so that the
later conversion to split visit_check_struct() will be easier
---
scripts/qapi-visit.py | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 8c964b5..391bdfb 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -123,12 +123,18 @@ void visit_type_%(c_name)s(Visitor *v, %(c_name)s **obj,
const char *name, Error
Error *err = NULL;
visit_start_struct(v, (void **)obj, "%(name)s", name, sizeof(%(c_name)s),
&err);
- if (!err) {
- if (*obj) {
- visit_type_%(c_name)s_fields(v, obj, errp);
- }
- visit_end_struct(v, &err);
+ if (err) {
+ goto out;
}
+ if (!*obj) {
+ goto out_obj;
+ }
+ visit_type_%(c_name)s_fields(v, obj, &err);
+out_obj:
+ error_propagate(errp, err);
+ err = NULL;
+ visit_end_struct(v, &err);
+out:
error_propagate(errp, err);
}
''',
--
2.4.3
- [Qemu-devel] [PATCH v6 00/23] qapi visitor cleanups (post-introspection cleanups subset E), Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 04/23] qapi: Don't cast Enum* to int*, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 03/23] qapi: Consolidate visitor integer callbacks, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 02/23] qapi: Require int64/uint64 implementation, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 06/23] qapi: Don't abuse stack to track qmp-output root, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 05/23] qmp: Fix reference-counting of qnull on empty output visit, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 01/23] qapi: Make all visitors supply int64/uint64 callbacks, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 09/23] hmp: Improve use of qapi visitor, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 11/23] ppc: Improve use of qapi visitors, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 14/23] qapi: Fix command with named empty argument type, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 16/23] qapi: Track all failures between visit_start/stop,
Eric Blake <=
- [Qemu-devel] [PATCH v6 10/23] vl: Improve use of qapi visitor, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 13/23] qapi: Add type.is_empty() helper, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 15/23] qapi: Improve generated event use of qapi visitor, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 19/23] qapi-visit: Unify struct and union visit, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 18/23] qapi: Canonicalize missing object to :empty, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 23/23] qapi: Change visit_type_FOO() to no longer return partial objects, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 22/23] qapi: Split visit_end_struct() into pieces, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 12/23] balloon: Improve use of qapi visitor, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 07/23] qapi: Document visitor interfaces, Eric Blake, 2015/11/25
- [Qemu-devel] [PATCH v6 17/23] qapi: Eliminate empty visit_type_FOO_fields, Eric Blake, 2015/11/25