From patchwork Thu Apr 30 05:31:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 1279944 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=2001:470:142::17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=hy3tWjjo; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:470:142::17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49CPQJ2bLpz9sSg for ; Thu, 30 Apr 2020 15:41:42 +1000 (AEST) Received: from localhost ([::1]:51748 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jU1x5-00070a-Q2 for incoming@patchwork.ozlabs.org; Thu, 30 Apr 2020 01:41:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53404) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jU1n7-00057C-CA for qemu-devel@nongnu.org; Thu, 30 Apr 2020 01:31:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jU1n0-0002fI-I7 for qemu-devel@nongnu.org; Thu, 30 Apr 2020 01:31:21 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:47189 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jU1mz-0002db-QD for qemu-devel@nongnu.org; Thu, 30 Apr 2020 01:31:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588224672; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=l4HsA9U+rvpLBK6iF7tlzwC1Ku+M+asiBgZ8TbiTWsk=; b=hy3tWjjoTXfOzEKtVrmr/+gZTb8KTOUxNcPNIOZLfzgP4YJlsBhjWZsEwCOidno2IwjZHo lIvk24IbZFArJkBri6MqWyKufir16Q+tmBbYgwdWTZ7BBVjyMSsuNUY1OYDSLw0xTevdt4 IOCqlfK3ng4N85oMj69bsvLmdPIdYAk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-33-atICTm6HNJOOfRfLiMg3Lw-1; Thu, 30 Apr 2020 01:31:10 -0400 X-MC-Unique: atICTm6HNJOOfRfLiMg3Lw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7326E107B265 for ; Thu, 30 Apr 2020 05:31:09 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-113-6.ams2.redhat.com [10.36.113.6]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4257960638; Thu, 30 Apr 2020 05:31:09 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 1C98211358D1; Thu, 30 Apr 2020 07:31:05 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PULL 20/20] qapi: Generate simpler marshalling code when no arguments Date: Thu, 30 Apr 2020 07:31:04 +0200 Message-Id: <20200430053104.32204-21-armbru@redhat.com> In-Reply-To: <20200430053104.32204-1-armbru@redhat.com> References: <20200430053104.32204-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=207.211.31.120; envelope-from=armbru@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/29 23:34:52 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" When command FOO has no arguments, its generated qmp_marshal_FOO() is a bit confusing. Make it simpler: visit_start_struct(v, NULL, NULL, 0, &err); if (err) { goto out; } - - if (!err) { - visit_check_struct(v, &err); - } + visit_check_struct(v, &err); visit_end_struct(v, NULL); if (err) { goto out; } Signed-off-by: Markus Armbruster Message-Id: <20200424084338.26803-16-armbru@redhat.com> Reviewed-by: Eric Blake --- scripts/qapi/commands.py | 40 ++++++++++++++++++++++++---------------- 1 file changed, 24 insertions(+), 16 deletions(-) diff --git a/scripts/qapi/commands.py b/scripts/qapi/commands.py index f545903567..6809b0fb6e 100644 --- a/scripts/qapi/commands.py +++ b/scripts/qapi/commands.py @@ -115,14 +115,10 @@ def gen_marshal(name, arg_type, boxed, ret_type): c_type=ret_type.c_type()) if have_args: - visit_members = ('visit_type_%s_members(v, &arg, &err);' - % arg_type.c_name()) ret += mcgen(''' %(c_name)s arg = {0}; ''', c_name=arg_type.c_name()) - else: - visit_members = '' ret += mcgen(''' @@ -131,16 +127,27 @@ def gen_marshal(name, arg_type, boxed, ret_type): if (err) { goto out; } - %(visit_members)s +''') + + if have_args: + ret += mcgen(''' + visit_type_%(c_arg_type)s_members(v, &arg, &err); if (!err) { visit_check_struct(v, &err); } +''', + c_arg_type=arg_type.c_name()) + else: + ret += mcgen(''' + visit_check_struct(v, &err); +''') + + ret += mcgen(''' visit_end_struct(v, NULL); if (err) { goto out; } -''', - visit_members=visit_members) +''') ret += gen_call(name, arg_type, boxed, ret_type) @@ -151,20 +158,21 @@ out: visit_free(v); ''') - if have_args: - visit_members = ('visit_type_%s_members(v, &arg, NULL);' - % arg_type.c_name()) - else: - visit_members = '' - ret += mcgen(''' v = qapi_dealloc_visitor_new(); visit_start_struct(v, NULL, NULL, 0, NULL); - %(visit_members)s +''') + + if have_args: + ret += mcgen(''' + visit_type_%(c_arg_type)s_members(v, &arg, NULL); +''', + c_arg_type=arg_type.c_name()) + + ret += mcgen(''' visit_end_struct(v, NULL); visit_free(v); -''', - visit_members=visit_members) +''') ret += mcgen(''' }