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;
  }
}