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[Qemu-devel] [PULL v2 20/20] qapi: Simplify gen_visit_fields() error han
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PULL v2 20/20] qapi: Simplify gen_visit_fields() error handling |
Date: |
Mon, 12 Oct 2015 20:19:45 +0200 |
From: Eric Blake <address@hidden>
Since we have consolidated all generated code to use 'err' as
the name of the local variable for error detection, we can
simplify the decision on whether to skip error detection (useful
for deallocation paths) to be a boolean.
Signed-off-by: Eric Blake <address@hidden>
Message-Id: <address@hidden>
[Change to gen_visit_fields() simplified]
Signed-off-by: Markus Armbruster <address@hidden>
---
scripts/qapi-commands.py | 4 +---
scripts/qapi.py | 20 ++++++++++----------
2 files changed, 11 insertions(+), 13 deletions(-)
diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
index 9d214a6..43a893b 100644
--- a/scripts/qapi-commands.py
+++ b/scripts/qapi-commands.py
@@ -101,19 +101,17 @@ def gen_marshal_input_visit(arg_type, dealloc=False):
return ret
if dealloc:
- errarg = None
ret += mcgen('''
qmp_input_visitor_cleanup(qiv);
qdv = qapi_dealloc_visitor_new();
v = qapi_dealloc_get_visitor(qdv);
''')
else:
- errarg = 'err'
ret += mcgen('''
v = qmp_input_get_visitor(qiv);
''')
- ret += gen_visit_fields(arg_type.members, errarg=errarg)
+ ret += gen_visit_fields(arg_type.members, skiperr=dealloc)
if dealloc:
ret += mcgen('''
diff --git a/scripts/qapi.py b/scripts/qapi.py
index ada6380..26cff3f 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -1537,23 +1537,23 @@ def gen_params(arg_type, extra):
return ret
-def gen_err_check(err='err', label='out'):
- if not err:
+def gen_err_check(label='out', skiperr=False):
+ if skiperr:
return ''
return mcgen('''
- if (%(err)s) {
+ if (err) {
goto %(label)s;
}
''',
- err=err, label=label)
+ label=label)
-def gen_visit_fields(members, prefix='', need_cast=False, errarg='err'):
+def gen_visit_fields(members, prefix='', need_cast=False, skiperr=False):
ret = ''
- if errarg:
- errparg = '&' + errarg
- else:
+ if skiperr:
errparg = 'NULL'
+ else:
+ errparg = '&err'
for memb in members:
if memb.optional:
@@ -1562,7 +1562,7 @@ def gen_visit_fields(members, prefix='', need_cast=False,
errarg='err'):
''',
prefix=prefix, c_name=c_name(memb.name),
name=memb.name, errp=errparg)
- ret += gen_err_check(err=errarg)
+ ret += gen_err_check(skiperr=skiperr)
ret += mcgen('''
if (%(prefix)shas_%(c_name)s) {
''',
@@ -1581,7 +1581,7 @@ def gen_visit_fields(members, prefix='', need_cast=False,
errarg='err'):
c_type=memb.type.c_name(), prefix=prefix, cast=cast,
c_name=c_name(memb.name), name=memb.name,
errp=errparg)
- ret += gen_err_check(err=errarg)
+ ret += gen_err_check(skiperr=skiperr)
if memb.optional:
pop_indent()
--
2.4.3
- [Qemu-devel] [PULL v2 00/20] QAPI patches, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 12/20] qapi: Reuse code for flat union base validation, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 05/20] qapi: Improve 'include' error message, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 06/20] qapi: Invoke exception superclass initializer, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 02/20] MAINTAINERS: Specify QObject include and test files, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 11/20] qapi: Test use of 'number' within alternates, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 20/20] qapi: Simplify gen_visit_fields() error handling,
Markus Armbruster <=
- [Qemu-devel] [PULL v2 07/20] qapi: Clean up qapi.py per pep8, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 19/20] qapi: Share gen_visit_fields(), Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 08/20] qapi: Test for various name collisions, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 03/20] MAINTAINERS: Specify QAPI include and test files, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 15/20] qapi: Consistent generated code: prefer common labels, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 16/20] qapi: Consistent generated code: prefer common indentation, Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 18/20] qapi: Share gen_err_check(), Markus Armbruster, 2015/10/12
- [Qemu-devel] [PULL v2 17/20] qapi: Consistent generated code: minimize push_indent() usage, Markus Armbruster, 2015/10/12