From patchwork Wed Sep 27 11:25:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Victor Toso X-Patchwork-Id: 1840171 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=L2eDBakV; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RwZ8s4XF0z1ypJ for ; Wed, 27 Sep 2023 21:27:41 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qlSg3-0002PE-Rm; Wed, 27 Sep 2023 07:25:59 -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 1qlSfy-0002Od-BO for qemu-devel@nongnu.org; Wed, 27 Sep 2023 07:25:54 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qlSfw-0001Yv-D0 for qemu-devel@nongnu.org; Wed, 27 Sep 2023 07:25:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1695813950; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=00JI1RwlBBmXYEiPlKOJV34H262RZWf9bT/B+xvDdOk=; b=L2eDBakVUL2TjnwooN+Eg/3rFJ1b9kjvUPA+b6n04n0uNlq7ldkO4a6Ef4mr1xihchj3El r/6Rccmb24GMXgf8i8xG1p2902krtjKy0X0RLWnRc9sk+YVpsxaOcmZmWVQl6dpOMND77Z XJFq8SJrcSshn+bwga+iB7SA3JWWoPM= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-537-FK9fyarUOV-QclxpqbwM1w-1; Wed, 27 Sep 2023 07:25:48 -0400 X-MC-Unique: FK9fyarUOV-QclxpqbwM1w-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4816C8039CF for ; Wed, 27 Sep 2023 11:25:48 +0000 (UTC) Received: from tapioca.lan (unknown [10.45.224.4]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3305F1054FC2; Wed, 27 Sep 2023 11:25:47 +0000 (UTC) From: Victor Toso To: qemu-devel@nongnu.org Cc: Markus Armbruster , John Snow , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= Subject: [PATCH v1 1/9] qapi: golang: Generate qapi's enum types in Go Date: Wed, 27 Sep 2023 13:25:36 +0200 Message-ID: <20230927112544.85011-2-victortoso@redhat.com> In-Reply-To: <20230927112544.85011-1-victortoso@redhat.com> References: <20230927112544.85011-1-victortoso@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass client-ip=170.10.129.124; envelope-from=victortoso@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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: 2.1.29 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-bounces+incoming=patchwork.ozlabs.org@nongnu.org This patch handles QAPI enum types and generates its equivalent in Go. Basically, Enums are being handled as strings in Golang. 1. For each QAPI enum, we will define a string type in Go to be the assigned type of this specific enum. 2. Naming: CamelCase will be used in any identifier that we want to export [0], which is everything. [0] https://go.dev/ref/spec#Exported_identifiers Example: qapi: | { 'enum': 'DisplayProtocol', | 'data': [ 'vnc', 'spice' ] } go: | type DisplayProtocol string | | const ( | DisplayProtocolVnc DisplayProtocol = "vnc" | DisplayProtocolSpice DisplayProtocol = "spice" | ) Signed-off-by: Victor Toso --- scripts/qapi/golang.py | 140 +++++++++++++++++++++++++++++++++++++++++ scripts/qapi/main.py | 2 + 2 files changed, 142 insertions(+) create mode 100644 scripts/qapi/golang.py diff --git a/scripts/qapi/golang.py b/scripts/qapi/golang.py new file mode 100644 index 0000000000..87081cdd05 --- /dev/null +++ b/scripts/qapi/golang.py @@ -0,0 +1,140 @@ +""" +Golang QAPI generator +""" +# Copyright (c) 2023 Red Hat Inc. +# +# Authors: +# Victor Toso +# +# This work is licensed under the terms of the GNU GPL, version 2. +# See the COPYING file in the top-level directory. + +# due QAPISchemaVisitor interface +# pylint: disable=too-many-arguments + +# Just for type hint on self +from __future__ import annotations + +import os +from typing import List, Optional + +from .schema import ( + QAPISchema, + QAPISchemaType, + QAPISchemaVisitor, + QAPISchemaEnumMember, + QAPISchemaFeature, + QAPISchemaIfCond, + QAPISchemaObjectType, + QAPISchemaObjectTypeMember, + QAPISchemaVariants, +) +from .source import QAPISourceInfo + +TEMPLATE_ENUM = ''' +type {name} string +const ( +{fields} +) +''' + + +def gen_golang(schema: QAPISchema, + output_dir: str, + prefix: str) -> None: + vis = QAPISchemaGenGolangVisitor(prefix) + schema.visit(vis) + vis.write(output_dir) + + +def qapi_to_field_name_enum(name: str) -> str: + return name.title().replace("-", "") + + +class QAPISchemaGenGolangVisitor(QAPISchemaVisitor): + + def __init__(self, _: str): + super().__init__() + types = ["enum"] + self.target = {name: "" for name in types} + self.schema = None + self.golang_package_name = "qapi" + + def visit_begin(self, schema): + self.schema = schema + + # Every Go file needs to reference its package name + for target in self.target: + self.target[target] = f"package {self.golang_package_name}\n" + + def visit_end(self): + self.schema = None + + def visit_object_type(self: QAPISchemaGenGolangVisitor, + name: str, + info: Optional[QAPISourceInfo], + ifcond: QAPISchemaIfCond, + features: List[QAPISchemaFeature], + base: Optional[QAPISchemaObjectType], + members: List[QAPISchemaObjectTypeMember], + variants: Optional[QAPISchemaVariants] + ) -> None: + pass + + def visit_alternate_type(self: QAPISchemaGenGolangVisitor, + name: str, + info: Optional[QAPISourceInfo], + ifcond: QAPISchemaIfCond, + features: List[QAPISchemaFeature], + variants: QAPISchemaVariants + ) -> None: + pass + + def visit_enum_type(self: QAPISchemaGenGolangVisitor, + name: str, + info: Optional[QAPISourceInfo], + ifcond: QAPISchemaIfCond, + features: List[QAPISchemaFeature], + members: List[QAPISchemaEnumMember], + prefix: Optional[str] + ) -> None: + + value = qapi_to_field_name_enum(members[0].name) + fields = "" + for member in members: + value = qapi_to_field_name_enum(member.name) + fields += f'''\t{name}{value} {name} = "{member.name}"\n''' + + self.target["enum"] += TEMPLATE_ENUM.format(name=name, fields=fields[:-1]) + + def visit_array_type(self, name, info, ifcond, element_type): + pass + + def visit_command(self, + name: str, + info: Optional[QAPISourceInfo], + ifcond: QAPISchemaIfCond, + features: List[QAPISchemaFeature], + arg_type: Optional[QAPISchemaObjectType], + ret_type: Optional[QAPISchemaType], + gen: bool, + success_response: bool, + boxed: bool, + allow_oob: bool, + allow_preconfig: bool, + coroutine: bool) -> None: + pass + + def visit_event(self, name, info, ifcond, features, arg_type, boxed): + pass + + def write(self, output_dir: str) -> None: + for module_name, content in self.target.items(): + go_module = module_name + "s.go" + go_dir = "go" + pathname = os.path.join(output_dir, go_dir, go_module) + odir = os.path.dirname(pathname) + os.makedirs(odir, exist_ok=True) + + with open(pathname, "w", encoding="ascii") as outfile: + outfile.write(content) diff --git a/scripts/qapi/main.py b/scripts/qapi/main.py index 316736b6a2..cdbb3690fd 100644 --- a/scripts/qapi/main.py +++ b/scripts/qapi/main.py @@ -15,6 +15,7 @@ from .common import must_match from .error import QAPIError from .events import gen_events +from .golang import gen_golang from .introspect import gen_introspect from .schema import QAPISchema from .types import gen_types @@ -54,6 +55,7 @@ def generate(schema_file: str, gen_events(schema, output_dir, prefix) gen_introspect(schema, output_dir, prefix, unmask) + gen_golang(schema, output_dir, prefix) def main() -> int: """