From nobody Thu Nov 14 18:06:05 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1710516270; cv=none; d=zohomail.com; s=zohoarc; b=RNrCby4+opTgWDMX6mdLqnnFYWOD8jn+rcowSNZ6V2aBGfEqXME5UwiE7qEqCAQ6BYHxKqw/2ro4mlqGTqR+yHhEtO75rURkhraZIrRnwrjiFXQsPZn6DJSfJODVDbeCwJWeWamc419euqM7/AnT72n0neNtQhH4t+IDaDZNRaY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1710516270; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=6LvfBDv/6ZZ+KOH7rQEl5kQgryl3nbbQrXJ8bWzrxik=; b=BTSkmfaPkzxAbYydfiI9Zk6yldIn+qvpKh2llBmid/qkq91wrgn8K7yC2P+2WVq+iifFrrrVuk2MAHc6Zf3k58XOk3MSOxssOkyVdbHmWF93uxWl7szhSbBPFcaJqv0ZvaDCXbFQ3XzCAGCyNIirZZeegQTpZOQdMHmyfIf4iMk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; 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=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1710516270203852.0052505733345; Fri, 15 Mar 2024 08:24:30 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rl9P2-0007iP-I1; Fri, 15 Mar 2024 11:23:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rl9Oz-0007gZ-KA for qemu-devel@nongnu.org; Fri, 15 Mar 2024 11:23:21 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rl9Or-00021o-3e for qemu-devel@nongnu.org; Fri, 15 Mar 2024 11:23:21 -0400 Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-484-rfGRLOLOPfGR6Fm-cCvGVQ-1; Fri, 15 Mar 2024 11:23:05 -0400 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5F4933CBD533; Fri, 15 Mar 2024 15:23:05 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.192.138]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3CCC1492BCC; Fri, 15 Mar 2024 15:23:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 1570621E683A; Fri, 15 Mar 2024 16:23:02 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1710516192; 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=6LvfBDv/6ZZ+KOH7rQEl5kQgryl3nbbQrXJ8bWzrxik=; b=bz8WFfPjV20nci3/VuYDB7wOVBYOXRlujCZFBIKyGfbR8o6zVOUGYy2M9CTJnjYHKYDd41 fPI6Jk/+Bm4HZ/4A1cSGUNkIMMWqdmrzf/KX5Fyw+8+6EA4pE8Ga2uY1ZaW8AE0LhFhv+3 IFP+Gn/487Y4UQluvmbUhNMnx+XrtLk= X-MC-Unique: rfGRLOLOPfGR6Fm-cCvGVQ-1 From: Markus Armbruster To: qemu-devel@nongnu.org Cc: jsnow@redhat.com, peter.maydell@linaro.org, michael.roth@amd.com Subject: [PATCH v5 19/25] qapi/parser: demote QAPIExpression to Dict[str, Any] Date: Fri, 15 Mar 2024 16:22:55 +0100 Message-ID: <20240315152301.3621858-20-armbru@redhat.com> In-Reply-To: <20240315152301.3621858-1-armbru@redhat.com> References: <20240315152301.3621858-1-armbru@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 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=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.933, 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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1710516272116100006 From: John Snow Dict[str, object] is a stricter type, but with the way that code is currently arranged, it is infeasible to enforce this strictness. In particular, although expr.py's entire raison d'=C3=AAtre is normalization and type-checking of QAPI Expressions, that type information is not "remembered" in any meaningful way by mypy because each individual expression is not downcast to a specific expression type that holds all the details of each expression's unique form. As a result, all of the code in schema.py that deals with actually creating type-safe specialized structures has no guarantee (myopically) that the data it is being passed is correct. There are two ways to solve this: (1) Re-assert that the incoming data is in the shape we expect it to be, or (2) Disable type checking for this data. (1) is appealing to my sense of strictness, but I gotta concede that it is asinine to re-check the shape of a QAPIExpression in schema.py when expr.py has just completed that work at length. The duplication of code and the nightmare thought of needing to update both locations if and when we change the shape of these structures makes me extremely reluctant to go down this route. (2) allows us the chance to miss updating types in the case that types are updated in expr.py, but it *is* an awful lot simpler and, importantly, gets us closer to type checking schema.py *at all*. Something is better than nothing, I'd argue. So, do the simpler dumber thing and worry about future strictness improvements later. Signed-off-by: John Snow Reviewed-by: Markus Armbruster Signed-off-by: Markus Armbruster --- scripts/qapi/parser.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/scripts/qapi/parser.py b/scripts/qapi/parser.py index ec4ebef4e3..2f3c704fa2 100644 --- a/scripts/qapi/parser.py +++ b/scripts/qapi/parser.py @@ -19,6 +19,7 @@ import re from typing import ( TYPE_CHECKING, + Any, Dict, List, Mapping, @@ -43,7 +44,7 @@ _ExprValue =3D Union[List[object], Dict[str, object], str, bool] =20 =20 -class QAPIExpression(Dict[str, object]): +class QAPIExpression(Dict[str, Any]): # pylint: disable=3Dtoo-few-public-methods def __init__(self, data: Mapping[str, object], --=20 2.44.0