// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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// A proto file used to test a message type with no explicit field presence.

syntax = "proto3";

// We want to test embedded proto2 messages, so include some proto2 types.
import "google/protobuf/unittest.proto";

package proto2_nofieldpresence_unittest;

option csharp_namespace = "Google.ProtocolBuffers.TestProtos";

// This proto includes every type of field in both singular and repeated
// forms.
message TestAllTypes {
  message NestedMessage {
    optional int32 bb = 1;
  }

  enum NestedEnum {
    FOO = 0;
    BAR = 1;
    BAZ = 2;
  }

  // Singular
  // TODO: remove 'optional' labels as soon as CL 69188077 is LGTM'd to make
  // 'optional' optional.
  optional    int32 optional_int32    =  1;
  optional    int64 optional_int64    =  2;
  optional   uint32 optional_uint32   =  3;
  optional   uint64 optional_uint64   =  4;
  optional   sint32 optional_sint32   =  5;
  optional   sint64 optional_sint64   =  6;
  optional  fixed32 optional_fixed32  =  7;
  optional  fixed64 optional_fixed64  =  8;
  optional sfixed32 optional_sfixed32 =  9;
  optional sfixed64 optional_sfixed64 = 10;
  optional    float optional_float    = 11;
  optional   double optional_double   = 12;
  optional     bool optional_bool     = 13;
  optional   string optional_string   = 14;
  optional    bytes optional_bytes    = 15;

  optional NestedMessage                        optional_nested_message  = 18;
  optional ForeignMessage                       optional_foreign_message = 19;
  optional protobuf_unittest.TestAllTypes         optional_proto2_message = 20;

  optional NestedEnum                           optional_nested_enum     = 21;
  optional ForeignEnum                          optional_foreign_enum    = 22;
  // N.B.: proto2-enum-type fields not allowed, because their default values
  // might not be zero.
  //optional protobuf_unittest.ForeignEnum          optional_proto2_enum     = 23;

  optional string optional_string_piece = 24 [ctype=STRING_PIECE];
  optional string optional_cord = 25 [ctype=CORD];

  optional NestedMessage optional_lazy_message = 30 [lazy=true];

  // Repeated
  repeated    int32 repeated_int32    = 31;
  repeated    int64 repeated_int64    = 32;
  repeated   uint32 repeated_uint32   = 33;
  repeated   uint64 repeated_uint64   = 34;
  repeated   sint32 repeated_sint32   = 35;
  repeated   sint64 repeated_sint64   = 36;
  repeated  fixed32 repeated_fixed32  = 37;
  repeated  fixed64 repeated_fixed64  = 38;
  repeated sfixed32 repeated_sfixed32 = 39;
  repeated sfixed64 repeated_sfixed64 = 40;
  repeated    float repeated_float    = 41;
  repeated   double repeated_double   = 42;
  repeated     bool repeated_bool     = 43;
  repeated   string repeated_string   = 44;
  repeated    bytes repeated_bytes    = 45;

  repeated NestedMessage                        repeated_nested_message  = 48;
  repeated ForeignMessage                       repeated_foreign_message = 49;
  repeated protobuf_unittest.TestAllTypes         repeated_proto2_message  = 50;

  repeated NestedEnum                           repeated_nested_enum     = 51;
  repeated ForeignEnum                          repeated_foreign_enum    = 52;

  repeated string repeated_string_piece = 54 [ctype=STRING_PIECE];
  repeated string repeated_cord = 55 [ctype=CORD];

  repeated NestedMessage repeated_lazy_message = 57 [lazy=true];

  oneof oneof_field {
    uint32 oneof_uint32 = 111;
    NestedMessage oneof_nested_message = 112;
    string oneof_string = 113;
    NestedEnum oneof_enum = 114;
  }
}

message TestProto2Required {
  optional protobuf_unittest.TestRequired proto2 = 1;
}

// Define these after TestAllTypes to make sure the compiler can handle
// that.
message ForeignMessage {
  optional int32 c = 1;
}

enum ForeignEnum {
  FOREIGN_FOO = 0;
  FOREIGN_BAR = 1;
  FOREIGN_BAZ = 2;
}