From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 339BBC43460 for ; Tue, 11 May 2021 22:07:29 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B5D2E616E9 for ; Tue, 11 May 2021 22:07:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B5D2E616E9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:44714 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lgaXH-0001hc-JU for qemu-devel@archiver.kernel.org; Tue, 11 May 2021 18:07:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55642) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgaW5-0007MJ-41 for qemu-devel@nongnu.org; Tue, 11 May 2021 18:06:13 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:37783) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgaW3-0006PB-EA for qemu-devel@nongnu.org; Tue, 11 May 2021 18:06:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1620770770; 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=MDjVSiuSSGwztDqXk3c2sk74qecBq7DNE6dMOBfqomI=; b=O7kCd/gKNNyB7B9GQuLxXkO+lxDzX+slwMXSxPPtALrplF2+UyBtcX10vLFEKXahL2E++O 4/ctW8dbXz+VxP0T6vStqaO7jNz4Ws37tRPp3a7ySkCmjvMJU9LSpI0LdcMaxPXVRqp9/H rqefpw2swBXUiJzD8Q/9A6TQ1MZSy7w= 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-233-MQtRNZ9dOOWm7RfGomsZnQ-1; Tue, 11 May 2021 18:06:08 -0400 X-MC-Unique: MQtRNZ9dOOWm7RfGomsZnQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D83E2FC80; Tue, 11 May 2021 22:06:07 +0000 (UTC) Received: from scv.redhat.com (ovpn-117-64.rdu2.redhat.com [10.10.117.64]) by smtp.corp.redhat.com (Postfix) with ESMTP id E46AABA6F; Tue, 11 May 2021 22:06:06 +0000 (UTC) From: John Snow To: qemu-devel@nongnu.org Subject: [PATCH v2 06/21] qapi/parser: enforce all top-level expressions must be dict in _parse() Date: Tue, 11 May 2021 18:05:46 -0400 Message-Id: <20210511220601.2110055-7-jsnow@redhat.com> In-Reply-To: <20210511220601.2110055-1-jsnow@redhat.com> References: <20210511220601.2110055-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 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: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=216.205.24.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.699, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, 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: Michael Roth , John Snow , Eduardo Habkost , Markus Armbruster , Cleber Rosa Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Instead of using get_expr nested=False, allow get_expr to always return any expression. In exchange, add a new error message to the top-level parser that explains the semantic error: Top-level expressions must always be JSON objects. This helps mypy understand the rest of this function which assumes that get_expr did indeed return a dict. The exception type changes from QAPIParseError to QAPISemError as a result, and the error message in two tests now changes. Signed-off-by: John Snow --- Thanks Markus, I like this quite a bit better. I think I swung the pendulum back too far away from "try not to change anything". This is cleaner. Signed-off-by: John Snow --- scripts/qapi/parser.py | 14 ++++++++------ tests/qapi-schema/non-objects.err | 2 +- tests/qapi-schema/quoted-structural-chars.err | 2 +- 3 files changed, 10 insertions(+), 8 deletions(-) diff --git a/scripts/qapi/parser.py b/scripts/qapi/parser.py index ba17f1357ad..d554b5485a6 100644 --- a/scripts/qapi/parser.py +++ b/scripts/qapi/parser.py @@ -78,7 +78,11 @@ def _parse(self): self.docs.append(cur_doc) continue - expr = self.get_expr(False) + expr = self.get_expr() + if not isinstance(expr, dict): + raise QAPISemError( + info, "top-level expression must be an object") + if 'include' in expr: self.reject_expr_doc(cur_doc) if len(expr) != 1: @@ -251,7 +255,7 @@ def get_members(self): self.accept() if key in expr: raise QAPIParseError(self, "duplicate key '%s'" % key) - expr[key] = self.get_expr(True) + expr[key] = self.get_expr() if self.tok == '}': self.accept() return expr @@ -270,7 +274,7 @@ def get_values(self): raise QAPIParseError( self, "expected '{', '[', ']', string, or boolean") while True: - expr.append(self.get_expr(True)) + expr.append(self.get_expr()) if self.tok == ']': self.accept() return expr @@ -278,9 +282,7 @@ def get_values(self): raise QAPIParseError(self, "expected ',' or ']'") self.accept() - def get_expr(self, nested): - if self.tok != '{' and not nested: - raise QAPIParseError(self, "expected '{'") + def get_expr(self): if self.tok == '{': self.accept() expr = self.get_members() diff --git a/tests/qapi-schema/non-objects.err b/tests/qapi-schema/non-objects.err index 3a4ea36966e..23bdb69c711 100644 --- a/tests/qapi-schema/non-objects.err +++ b/tests/qapi-schema/non-objects.err @@ -1 +1 @@ -non-objects.json:1:1: expected '{' +non-objects.json:1: top-level expression must be an object diff --git a/tests/qapi-schema/quoted-structural-chars.err b/tests/qapi-schema/quoted-structural-chars.err index 07d1561d1f7..af6c1e173db 100644 --- a/tests/qapi-schema/quoted-structural-chars.err +++ b/tests/qapi-schema/quoted-structural-chars.err @@ -1 +1 @@ -quoted-structural-chars.json:1:1: expected '{' +quoted-structural-chars.json:1: top-level expression must be an object -- 2.30.2