syntax = "proto2";

package proto2_basic;

message Defaults {
  optional int32 i = 1 [default = 17];
  optional string s = 2 [default = "hello"];
  optional bool b = 3 [default = true];
  optional float f = 4 [default = 3.5];
  optional double d = 5 [default = 1.5];
  optional int64 i64 = 6 [default = 1234567890123];
  optional uint64 u64 = 7 [default = 17];
  optional bytes by = 8 [default = "\x00\xff"];
  optional Color color = 9 [default = GREEN];

  enum Color {
    RED = 0;
    GREEN = 1;
    BLUE = 2;
  }
}

message Cardinality {
  required int32 r = 1;
  optional int32 o = 2;
  repeated int32 packed_default = 3;
  repeated int32 explicitly_packed = 4 [packed = true];
  repeated int32 explicitly_unpacked = 5 [packed = false];
}

message Nested {
  required Inner inner = 1;
  optional Inner inner_opt = 2;

  message Inner {
    required int32 x = 1;
  }
}

// Proto2 legacy groups. Wire format uses SGROUP (3) / EGROUP (4) tag
// pairs instead of a length-prefixed message body.
message WithGroup {
  optional group SingleGroup = 1 {
    optional int32 a = 2;
    optional string s = 3;
  }
  repeated group RepGroup = 4 {
    optional int32 n = 5;
  }
}

// Bench fixture exercising the proto2-only shapes: required scalar,
// optional repeated, custom default, a `group` field, and a nested
// message. Used by bench/bench.lua against both modes.
message BenchPayload {
  required int32 id            = 1;
  optional string name         = 2 [default = "anonymous"];
  optional int32 retries       = 3 [default = 3];
  repeated int32 lucky_numbers = 4 [packed = true];
  repeated string tags         = 5;
  optional Inner inner         = 6;
  optional group Stats = 7 {
    optional int32 latency_ns = 8;
    optional int32 attempts   = 9;
  }

  message Inner {
    required string key = 1;
    optional int32 weight = 2;
  }

  // Reserve a range for the file-level extensions declared below.
  extensions 100 to 199;
}

extend BenchPayload {
  optional int32  ext_count   = 100;
  optional string ext_label   = 101;
}