src/protozero/test/example_proto/extensions.proto

/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

syntax = "proto2";

package protozero.test.protos;

message RealFakeEvent {
  optional uint32 base_int = 1;
  optional string base_string = 2;

  extensions 10 to 99;
}

message SystemA {
  optional uint32 int_a = 1;
  optional string string_a = 2;
}

message SystemB {
  optional uint32 int_b = 1;
  optional string string_b = 2;
}

// Dummy message used for naming purposes.
message BrowserExtension {
  extend RealFakeEvent {
    optional SystemA extension_a = 10;
    optional SystemB extension_b = 11;
  }
}

// Scalar extensions (exercise non-message FindFieldByName paths).
message ScalarBrowserExtension {
  extend RealFakeEvent {
    optional uint32 ext_uint = 12;
    optional string ext_string = 13;
    optional bool ext_bool = 14;
  }
}

// File-scope extend (no enclosing wrapper).
extend RealFakeEvent {
  optional uint32 file_scope_ext = 15;
}

// "Legacy" message with the same format as BrowserExtension. Tests that if
// LegacyFakeEvent is split into RealFakeEvent and BrowserExtension, the wire
// format remains compatible.
message LegacyFakeEvent {
  optional uint32 base_int = 1;
  optional string base_string = 2;
  optional SystemA extension_a = 10;
  optional SystemB extension_b = 11;
}