From nobody Sun Nov 16 23:00:53 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1601928037; cv=none; d=zohomail.com; s=zohoarc; b=hqQWAg2xniGr6NCM8IFKkv1Vwg2AU2t68kKFB3VTGKCe85mt1qjTZ9PwyWOJ+OjEiidUPgGgHaH3t8vz0tXW+FXeI96VyVah18ZRnDM1cbMxWJy+gc3gJYLCgu4oT4RWka9Sj6U2QSjlIPhvt4CNAgR3W/zxaVLTvqnukA7tc1Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1601928037; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=6wJeioDUsMcpBGeCVGddCyLvkpRRnjCg33yB2VwN4ck=; b=MMoG5TTvTBnO8Kd+XAF8LpJNYDvtc8mPUSENoLMfNhZugnPKKTC3KvBMmkTPH65djGhuaYfunZJkD8sAHmA6CcxtWBt8Sx+MPB8uBBF5zBjDDysxiJkH50d7hGfaZ5Esf5OJ3OMXEChSSM44n4rvVuiLv3kCmPPVOAHzk0EMefQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1601928037678507.4482802081038; Mon, 5 Oct 2020 13:00:37 -0700 (PDT) Received: from localhost ([::1]:35160 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kPWey-0004C2-84 for importer@patchew.org; Mon, 05 Oct 2020 16:00:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56760) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kPWWt-0008K0-NL for qemu-devel@nongnu.org; Mon, 05 Oct 2020 15:52:15 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:31792) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kPWWr-000776-Pz for qemu-devel@nongnu.org; Mon, 05 Oct 2020 15:52:15 -0400 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-101-d2wMxoiAPCC0f-vIxiPkDQ-1; Mon, 05 Oct 2020 15:52:10 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BE086107AFC8 for ; Mon, 5 Oct 2020 19:52:09 +0000 (UTC) Received: from scv.redhat.com (ovpn-120-38.rdu2.redhat.com [10.10.120.38]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2D3765C1BD; Mon, 5 Oct 2020 19:52:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601927533; 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=6wJeioDUsMcpBGeCVGddCyLvkpRRnjCg33yB2VwN4ck=; b=Bquomc+1M+1CPkU3F+4n0p/+qInJoJFZ7SpfF0gEe5Qi2z8HutbUg1Qn5wkGCIDu2lWd60 u80ArgEuxsU9gU36HgY76gprrosmLel/LdCMGUJF3psngaVWcTMBkN/ZYxBKEqo2Sm1Fww Anp1csHIKk2WEhRGjjbtks5hdgAPzGY= X-MC-Unique: d2wMxoiAPCC0f-vIxiPkDQ-1 From: John Snow To: qemu-devel@nongnu.org Subject: [PATCH v5 11/36] qapi/common.py: Add indent manager Date: Mon, 5 Oct 2020 15:51:33 -0400 Message-Id: <20201005195158.2348217-12-jsnow@redhat.com> In-Reply-To: <20201005195158.2348217-1-jsnow@redhat.com> References: <20201005195158.2348217-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jsnow@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.205.24.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/05 02:11:31 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.733, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Cc: Cleber Rosa , John Snow , Eduardo Habkost , Markus Armbruster Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Code style tools really dislike the use of global keywords, because it generally involves re-binding the name at runtime which can have strange effects depending on when and how that global name is referenced in other modules. Make a little indent level manager instead. Signed-off-by: John Snow Reviewed-by: Eduardo Habkost Reviewed-by: Cleber Rosa --- scripts/qapi/common.py | 49 ++++++++++++++++++++++++++++-------------- scripts/qapi/visit.py | 7 +++--- 2 files changed, 36 insertions(+), 20 deletions(-) diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py index cee63eb95c7..b35318b72cf 100644 --- a/scripts/qapi/common.py +++ b/scripts/qapi/common.py @@ -93,33 +93,50 @@ def c_name(name, protect=3DTrue): pointer_suffix =3D ' *' + eatspace =20 =20 -def genindent(count): - ret =3D '' - for _ in range(count): - ret +=3D ' ' - return ret +class Indentation: + """ + Indentation level management. =20 + :param initial: Initial number of spaces, default 0. + """ + def __init__(self, initial: int =3D 0) -> None: + self._level =3D initial =20 -indent_level =3D 0 + def __int__(self) -> int: + return self._level =20 + def __repr__(self) -> str: + return "{}({:d})".format(type(self).__name__, self._level) =20 -def push_indent(indent_amount=3D4): - global indent_level - indent_level +=3D indent_amount + def __str__(self) -> str: + """Return the current indentation as a string of spaces.""" + return ' ' * self._level =20 + def __bool__(self) -> bool: + """True when there is a non-zero indentation.""" + return bool(self._level) =20 -def pop_indent(indent_amount=3D4): - global indent_level - indent_level -=3D indent_amount + def increase(self, amount: int =3D 4) -> None: + """Increase the indentation level by ``amount``, default 4.""" + self._level +=3D amount + + def decrease(self, amount: int =3D 4) -> None: + """Decrease the indentation level by ``amount``, default 4.""" + if self._level < amount: + raise ArithmeticError( + f"Can't remove {amount:d} spaces from {self!r}") + self._level -=3D amount + + +indent =3D Indentation() =20 =20 # Generate @code with @kwds interpolated. -# Obey indent_level, and strip eatspace. +# Obey indent, and strip eatspace. def cgen(code, **kwds): raw =3D code % kwds - if indent_level: - indent =3D genindent(indent_level) - raw =3D re.sub(r'^(?!(#|$))', indent, raw, flags=3Dre.MULTILINE) + if indent: + raw =3D re.sub(r'^(?!(#|$))', str(indent), raw, flags=3Dre.MULTILI= NE) return re.sub(re.escape(eatspace) + r' *', '', raw) =20 =20 diff --git a/scripts/qapi/visit.py b/scripts/qapi/visit.py index 808410d6f1b..14f30c228b7 100644 --- a/scripts/qapi/visit.py +++ b/scripts/qapi/visit.py @@ -18,9 +18,8 @@ c_name, gen_endif, gen_if, + indent, mcgen, - pop_indent, - push_indent, ) from .gen import QAPISchemaModularCVisitor, ifcontext from .schema import QAPISchemaObjectType @@ -69,7 +68,7 @@ def gen_visit_object_members(name, base, members, variant= s): if (visit_optional(v, "%(name)s", &obj->has_%(c_name)s)) { ''', name=3Dmemb.name, c_name=3Dc_name(memb.name)) - push_indent() + indent.increase() ret +=3D mcgen(''' if (!visit_type_%(c_type)s(v, "%(name)s", &obj->%(c_name)s, errp)) { return false; @@ -78,7 +77,7 @@ def gen_visit_object_members(name, base, members, variant= s): c_type=3Dmemb.type.c_name(), name=3Dmemb.name, c_name=3Dc_name(memb.name)) if memb.optional: - pop_indent() + indent.decrease() ret +=3D mcgen(''' } ''') --=20 2.26.2