src/third_party/protobuf-3/src/google/protobuf/util/internal/testdata/maps.proto

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
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// Proto to test proto3 maps.
syntax = "proto3";

package google.protobuf.testing.maps;
option java_package = "com.google.protobuf.testing.maps";

message MapIn {
  string other = 1;
  repeated string things = 2;
  map<string, string> map_input = 3;
}

message MapOut {
  map<string, MapM> map1 = 1;
  map<string, MapOut> map2 = 2;
  map<int32, string> map3 = 3;
  map<bool, string> map4 = 5;
  string bar = 4;
}

// A message with exactly the same wire representation as MapOut, but using
// repeated message fields instead of map fields. We use this message to test
// the wire-format compatibility of the JSON transcoder (e.g., whether it
// handles missing keys correctly).
message MapOutWireFormat {
  message Map1Entry {
    string key = 1;
    MapM value = 2;
  }
  repeated Map1Entry map1 = 1;
  message Map2Entry {
    string key = 1;
    MapOut value = 2;
  }
  repeated Map2Entry map2 = 2;
  message Map3Entry {
    int32 key = 1;
    string value = 2;
  }
  repeated Map3Entry map3 = 3;
  message Map4Entry {
    bool key = 1;
    string value = 2;
  }
  repeated Map4Entry map4 = 5;
  string bar = 4;
}

message MapM {
  string foo = 1;
}

service TestService {
  rpc Call1(MapIn) returns (MapOut);
  rpc Call2(MapIn) returns (MapOut);
}