From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52989) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agrGo-00089P-U6 for qemu-devel@nongnu.org; Fri, 18 Mar 2016 06:04:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1agrGk-0001Tv-S0 for qemu-devel@nongnu.org; Fri, 18 Mar 2016 06:04:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42771) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agrGk-0001Tj-Jz for qemu-devel@nongnu.org; Fri, 18 Mar 2016 06:04:34 -0400 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (Postfix) with ESMTPS id 4720364381 for ; Fri, 18 Mar 2016 10:04:34 +0000 (UTC) From: Markus Armbruster Date: Fri, 18 Mar 2016 11:04:22 +0100 Message-Id: <1458295469-22215-9-git-send-email-armbru@redhat.com> In-Reply-To: <1458295469-22215-1-git-send-email-armbru@redhat.com> References: <1458295469-22215-1-git-send-email-armbru@redhat.com> Subject: [Qemu-devel] [PULL 08/15] qapi-commands: Utilize implicit struct visits List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Eric Blake Rather than generate inline per-member visits, take advantage of the 'visit_type_FOO_members()' function for command marshalling. This is possible now that implicit structs can be visited like any other. Generate call arguments from a stack- allocated struct, rather than a list of local variables: |@@ -57,26 +57,15 @@ void qmp_marshal_add_fd(QDict *args, QOb | QmpInputVisitor *qiv = qmp_input_visitor_new_strict(QOBJECT(args)); | QapiDeallocVisitor *qdv; | Visitor *v; |- bool has_fdset_id = false; |- int64_t fdset_id = 0; |- bool has_opaque = false; |- char *opaque = NULL; |+ q_obj_add_fd_arg arg = {0}; | | v = qmp_input_get_visitor(qiv); |- if (visit_optional(v, "fdset-id", &has_fdset_id)) { |- visit_type_int(v, "fdset-id", &fdset_id, &err); |- if (err) { |- goto out; |- } |- } |- if (visit_optional(v, "opaque", &has_opaque)) { |- visit_type_str(v, "opaque", &opaque, &err); |- if (err) { |- goto out; |- } |+ visit_type_q_obj_add_fd_arg_members(v, &arg, &err); |+ if (err) { |+ goto out; | } | |- retval = qmp_add_fd(has_fdset_id, fdset_id, has_opaque, opaque, &err); |+ retval = qmp_add_fd(arg.has_fdset_id, arg.fdset_id, arg.has_opaque, arg.opaque, &err); | if (err) { | goto out; | } |@@ -88,12 +77,7 @@ out: | qmp_input_visitor_cleanup(qiv); | qdv = qapi_dealloc_visitor_new(); | v = qapi_dealloc_get_visitor(qdv); |- if (visit_optional(v, "fdset-id", &has_fdset_id)) { |- visit_type_int(v, "fdset-id", &fdset_id, NULL); |- } |- if (visit_optional(v, "opaque", &has_opaque)) { |- visit_type_str(v, "opaque", &opaque, NULL); |- } |+ visit_type_q_obj_add_fd_arg_members(v, &arg, NULL); | qapi_dealloc_visitor_cleanup(qdv); | } This also has the nice side effect of eliminating a chance of collision between argument QMP names and local variables. This patch also paves the way for some followup simplifications in the generator, in subsequent patches. Signed-off-by: Eric Blake Message-Id: <1458254921-17042-9-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster --- scripts/qapi-commands.py | 28 ++++++++++++---------------- 1 file changed, 12 insertions(+), 16 deletions(-) diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py index 3784f33..28b9cbe 100644 --- a/scripts/qapi-commands.py +++ b/scripts/qapi-commands.py @@ -33,8 +33,8 @@ def gen_call(name, arg_type, ret_type): assert not arg_type.variants for memb in arg_type.members: if memb.optional: - argstr += 'has_%s, ' % c_name(memb.name) - argstr += '%s, ' % c_name(memb.name) + argstr += 'arg.has_%s, ' % c_name(memb.name) + argstr += 'arg.%s, ' % c_name(memb.name) lhs = '' if ret_type: @@ -71,21 +71,10 @@ def gen_marshal_vars(arg_type, ret_type): QmpInputVisitor *qiv = qmp_input_visitor_new_strict(QOBJECT(args)); QapiDeallocVisitor *qdv; Visitor *v; -''') + %(c_name)s arg = {0}; - for memb in arg_type.members: - if memb.optional: - ret += mcgen(''' - bool has_%(c_name)s = false; ''', - c_name=c_name(memb.name)) - ret += mcgen(''' - %(c_type)s %(c_name)s = %(c_null)s; -''', - c_name=c_name(memb.name), - c_type=memb.type.c_type(), - c_null=memb.type.c_null()) - ret += '\n' + c_name=arg_type.c_name()) else: ret += mcgen(''' @@ -107,17 +96,24 @@ def gen_marshal_input_visit(arg_type, dealloc=False): qdv = qapi_dealloc_visitor_new(); v = qapi_dealloc_get_visitor(qdv); ''') + errp = 'NULL' else: ret += mcgen(''' v = qmp_input_get_visitor(qiv); ''') + errp = '&err' - ret += gen_visit_members(arg_type.members, skiperr=dealloc) + ret += mcgen(''' + visit_type_%(c_name)s_members(v, &arg, %(errp)s); +''', + c_name=arg_type.c_name(), errp=errp) if dealloc: ret += mcgen(''' qapi_dealloc_visitor_cleanup(qdv); ''') + else: + ret += gen_err_check() return ret -- 2.4.3