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qapi: Consistent generated code: prefer error 'err' 

We had some pointless differences in the generated code for visit,
command marshalling, and events; unifying them makes it easier for
future patches to consolidate to common helper functions.
This is one patch of a series to clean up these differences.

This patch consistently names the local error variable 'err' rather
than 'local_err'.

No change in semantics to the generated code.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1443565276-4535-11-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
pull/30/head
Eric Blake 11 years ago
committed by Markus Armbruster
parent
376863ef48
commit
2a0f50e8d9
3 changed files with 34 additions and 34 deletions
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  1. 28
      docs/qapi-code-gen.txt
  2. 22
      scripts/qapi-commands.py
  3. 18
      scripts/qapi-event.py

28
docs/qapi-code-gen.txt
View File

@ -916,20 +916,20 @@ Example:
static void qmp_marshal_output_UserDefOne(UserDefOne *ret_in, QObject **ret_out, Error **errp)
{
Error *local_err = NULL;
Error *err = NULL;
QmpOutputVisitor *mo = qmp_output_visitor_new();
QapiDeallocVisitor *md;
Visitor *v;
v = qmp_output_get_visitor(mo);
visit_type_UserDefOne(v, &ret_in, "unused", &local_err);
if (local_err) {
visit_type_UserDefOne(v, &ret_in, "unused", &err);
if (err) {
goto out;
}
*ret_out = qmp_output_get_qobject(mo);
out:
error_propagate(errp, local_err);
error_propagate(errp, err);
qmp_output_visitor_cleanup(mo);
md = qapi_dealloc_visitor_new();
v = qapi_dealloc_get_visitor(md);
@ -939,7 +939,7 @@ Example:
static void qmp_marshal_my_command(QDict *args, QObject **ret, Error **errp)
{
Error *local_err = NULL;
Error *err = NULL;
UserDefOne *retval;
QmpInputVisitor *mi = qmp_input_visitor_new_strict(QOBJECT(args));
QapiDeallocVisitor *md;
@ -947,20 +947,20 @@ Example:
UserDefOne *arg1 = NULL;
v = qmp_input_get_visitor(mi);
visit_type_UserDefOne(v, &arg1, "arg1", &local_err);
if (local_err) {
visit_type_UserDefOne(v, &arg1, "arg1", &err);
if (err) {
goto out;
}
retval = qmp_my_command(arg1, &local_err);
if (local_err) {
retval = qmp_my_command(arg1, &err);
if (err) {
goto out;
}
qmp_marshal_output_UserDefOne(retval, ret, &local_err);
qmp_marshal_output_UserDefOne(retval, ret, &err);
out:
error_propagate(errp, local_err);
error_propagate(errp, err);
qmp_input_visitor_cleanup(mi);
md = qapi_dealloc_visitor_new();
v = qapi_dealloc_get_visitor(md);
@ -1007,7 +1007,7 @@ Example:
void qapi_event_send_my_event(Error **errp)
{
QDict *qmp;
Error *local_err = NULL;
Error *err = NULL;
QMPEventFuncEmit emit;
emit = qmp_event_get_func_emit();
if (!emit) {
@ -1016,9 +1016,9 @@ Example:
qmp = qmp_event_build_dict("MY_EVENT");
emit(EXAMPLE_QAPI_EVENT_MY_EVENT, qmp, &local_err);
emit(EXAMPLE_QAPI_EVENT_MY_EVENT, qmp, &err);
error_propagate(errp, local_err);
error_propagate(errp, err);
QDECREF(qmp);
}

22
scripts/qapi-commands.py
View File

@ -53,14 +53,14 @@ def gen_call(name, arg_type, ret_type):
push_indent()
ret = mcgen('''
%(lhs)sqmp_%(c_name)s(%(args)s&local_err);
%(lhs)sqmp_%(c_name)s(%(args)s&err);
''',
c_name=c_name(name), args=argstr, lhs=lhs)
if ret_type:
ret += gen_err_check('local_err')
ret += gen_err_check('err')
ret += mcgen('''
qmp_marshal_output_%(c_name)s(retval, ret, &local_err);
qmp_marshal_output_%(c_name)s(retval, ret, &err);
''',
c_name=ret_type.c_name())
pop_indent()
@ -69,7 +69,7 @@ qmp_marshal_output_%(c_name)s(retval, ret, &local_err);
def gen_marshal_vars(arg_type, ret_type):
ret = mcgen('''
Error *local_err = NULL;
Error *err = NULL;
''')
push_indent()
@ -127,8 +127,8 @@ md = qapi_dealloc_visitor_new();
v = qapi_dealloc_get_visitor(md);
''')
else:
errparg = '&local_err'
errarg = 'local_err'
errparg = '&err'
errarg = 'err'
ret += mcgen('''
v = qmp_input_get_visitor(mi);
''')
@ -171,20 +171,20 @@ def gen_marshal_output(ret_type):
static void qmp_marshal_output_%(c_name)s(%(c_type)s ret_in, QObject **ret_out, Error **errp)
{
Error *local_err = NULL;
Error *err = NULL;
QmpOutputVisitor *mo = qmp_output_visitor_new();
QapiDeallocVisitor *md;
Visitor *v;
v = qmp_output_get_visitor(mo);
visit_type_%(c_name)s(v, &ret_in, "unused", &local_err);
if (local_err) {
visit_type_%(c_name)s(v, &ret_in, "unused", &err);
if (err) {
goto out;
}
*ret_out = qmp_output_get_qobject(mo);
out:
error_propagate(errp, local_err);
error_propagate(errp, err);
qmp_output_visitor_cleanup(mo);
md = qapi_dealloc_visitor_new();
v = qapi_dealloc_get_visitor(md);
@ -227,7 +227,7 @@ def gen_marshal(name, arg_type, ret_type):
out:
''')
ret += mcgen('''
error_propagate(errp, local_err);
error_propagate(errp, err);
''')
ret += gen_marshal_input_visit(arg_type, dealloc=True)
ret += mcgen('''

18
scripts/qapi-event.py
View File

@ -34,7 +34,7 @@ def gen_event_send(name, arg_type):
%(proto)s
{
QDict *qmp;
Error *local_err = NULL;
Error *err = NULL;
QMPEventFuncEmit emit;
''',
proto=gen_event_send_proto(name, arg_type))
@ -67,8 +67,8 @@ def gen_event_send(name, arg_type):
g_assert(v);
/* Fake visit, as if all members are under a structure */
visit_start_struct(v, NULL, "", "%(name)s", 0, &local_err);
if (local_err) {
visit_start_struct(v, NULL, "", "%(name)s", 0, &err);
if (err) {
goto clean;
}
@ -90,8 +90,8 @@ def gen_event_send(name, arg_type):
cast = ''
ret += mcgen('''
visit_type_%(c_type)s(v, %(cast)s&%(c_name)s, "%(name)s", &local_err);
if (local_err) {
visit_type_%(c_type)s(v, %(cast)s&%(c_name)s, "%(name)s", &err);
if (err) {
goto clean;
}
''',
@ -108,8 +108,8 @@ def gen_event_send(name, arg_type):
ret += mcgen('''
visit_end_struct(v, &local_err);
if (local_err) {
visit_end_struct(v, &err);
if (err) {
goto clean;
}
@ -120,7 +120,7 @@ def gen_event_send(name, arg_type):
''')
ret += mcgen('''
emit(%(c_enum)s, qmp, &local_err);
emit(%(c_enum)s, qmp, &err);
''',
c_enum=c_enum_const(event_enum_name, name))
@ -131,7 +131,7 @@ def gen_event_send(name, arg_type):
qmp_output_visitor_cleanup(qov);
''')
ret += mcgen('''
error_propagate(errp, local_err);
error_propagate(errp, err);
QDECREF(qmp);
}
''')

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