1// Protocol Buffers - Google's data interchange format 2// Copyright 2023 Google Inc.  All rights reserved. 3// 4// Use of this source code is governed by a BSD-style 5// license that can be found in the LICENSE file or at 6// https://developers.google.com/open-source/licenses/bsd 7 8syntax = "proto2"; 910package pb;1112import "google/protobuf/descriptor.proto";1314option go_package = "google.golang.org/protobuf/types/gofeaturespb";1516extend google.protobuf.FeatureSet {17  optional GoFeatures go = 1002;18}1920message GoFeatures {21  // Whether or not to generate the deprecated UnmarshalJSON method for enums.22  optional bool legacy_unmarshal_json_enum = 1 [23    retention = RETENTION_RUNTIME,24    targets = TARGET_TYPE_ENUM,25    targets = TARGET_TYPE_FILE,26    feature_support = {27      edition_introduced: EDITION_2023,28      edition_deprecated: EDITION_2023,29      deprecation_warning: "The legacy UnmarshalJSON API is deprecated and "30                           "will be removed in a future edition.",31    },32    edition_defaults = { edition: EDITION_LEGACY, value: "true" },33    edition_defaults = { edition: EDITION_PROTO3, value: "false" }34  ];3536  enum APILevel {37    // API_LEVEL_UNSPECIFIED results in selecting the OPEN API,38    // but needs to be a separate value to distinguish between39    // an explicitly set api level or a missing api level.40    API_LEVEL_UNSPECIFIED = 0;41    API_OPEN = 1;42    API_HYBRID = 2;43    API_OPAQUE = 3;44  }4546  // One of OPEN, HYBRID or OPAQUE.47  optional APILevel api_level = 2 [48    retention = RETENTION_RUNTIME,49    targets = TARGET_TYPE_MESSAGE,50    targets = TARGET_TYPE_FILE,51    feature_support = {52      edition_introduced: EDITION_2023,53    },54    edition_defaults = { edition: EDITION_LEGACY, value: "API_LEVEL_UNSPECIFIED" },55    edition_defaults = { edition: EDITION_2024, value: "API_OPAQUE" }56   ];57}