// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

// Author: kenton@google.com (Kenton Varda)
//  Based on original Protocol Buffers design by
//  Sanjay Ghemawat, Jeff Dean, and others.
//
// A proto file we will use for unit testing.
//
// LINT: ALLOW_GROUPS, LEGACY_NAMES

edition = "2023";

// We don't put this in a package within proto2 because we need to make sure
// that the generated code doesn't depend on being in the proto2 namespace.
// In test_util.h we do "using namespace unittest = protobuf_unittest".
package protobuf_unittest;

import "google/protobuf/unittest_import.proto";

option features = {
  enum_type: CLOSED
  repeated_field_encoding: EXPANDED
  utf8_validation: NONE
};

// Some generic_services option(s) added automatically.
// See:  http://go/proto2-generic-services-default
option cc_generic_services = true; // auto-added
option java_generic_services = true; // auto-added
option py_generic_services = true; // auto-added
option cc_enable_arenas = true;

// Protos optimized for SPEED use a strict superset of the generated code
// of equivalent ones optimized for CODE_SIZE, so we should optimize all our
// tests for speed unless explicitly testing code size optimization.
option optimize_for = SPEED;
option java_outer_classname = "UnittestProto";

// This proto includes every type of field in both singular and repeated
// forms.
message TestAllTypes {
  message NestedMessage {
    // The field name "b" fails to compile in proto1 because it conflicts with
    // a local variable named "b" in one of the generated methods.  Doh.
    // This file needs to compile in proto1 to test backwards-compatibility.
    int32 bb = 1;
  }

  enum NestedEnum {
    FOO = 1;
    BAR = 2;
    BAZ = 3;
    NEG = -1; // Intentionally negative.
  }

  // Singular
  int32 optional_int32 = 1;
  int64 optional_int64 = 2;
  uint32 optional_uint32 = 3;
  uint64 optional_uint64 = 4;
  sint32 optional_sint32 = 5;
  sint64 optional_sint64 = 6;
  fixed32 optional_fixed32 = 7;
  fixed64 optional_fixed64 = 8;
  sfixed32 optional_sfixed32 = 9;
  sfixed64 optional_sfixed64 = 10;
  float optional_float = 11;
  double optional_double = 12;
  bool optional_bool = 13;
  string optional_string = 14;
  bytes optional_bytes = 15;

  message OptionalGroup {
    int32 a = 17;
  }

  OptionalGroup optionalgroup = 16 [
    features.message_encoding = DELIMITED
  ];

  NestedMessage optional_nested_message = 18;
  ForeignMessage optional_foreign_message = 19;
  protobuf_unittest_import.ImportMessage optional_import_message = 20;
  NestedEnum optional_nested_enum = 21;
  ForeignEnum optional_foreign_enum = 22;
  protobuf_unittest_import.ImportEnum optional_import_enum = 23;
  string optional_string_piece = 24 [
    ctype = STRING_PIECE
  ];

  string optional_cord = 25 [
    ctype = CORD
  ];
  bytes optional_bytes_cord = 86 [ctype=CORD];

  // Defined in unittest_import_public.proto
  protobuf_unittest_import.PublicImportMessage optional_public_import_message = 26;
  NestedMessage optional_lazy_message = 27 [
    lazy = true
  ];

  NestedMessage optional_unverified_lazy_message = 28 [
    unverified_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;

  message RepeatedGroup {
    int32 a = 47;
  }

  repeated RepeatedGroup repeatedgroup = 46 [
    features.message_encoding = DELIMITED
  ];

  repeated NestedMessage repeated_nested_message = 48;
  repeated ForeignMessage repeated_foreign_message = 49;
  repeated protobuf_unittest_import.ImportMessage repeated_import_message = 50;
  repeated NestedEnum repeated_nested_enum = 51;
  repeated ForeignEnum repeated_foreign_enum = 52;
  repeated protobuf_unittest_import.ImportEnum repeated_import_enum = 53;
  repeated string repeated_string_piece = 54 [
    ctype = STRING_PIECE
  ];

  repeated string repeated_cord = 55 [
    ctype = CORD
  ];

  repeated NestedMessage repeated_lazy_message = 57 [
    lazy = true
  ];

  // Singular with defaults
  int32 default_int32 = 61 [
    default = 41
  ];

  int64 default_int64 = 62 [
    default = 42
  ];

  uint32 default_uint32 = 63 [
    default = 43
  ];

  uint64 default_uint64 = 64 [
    default = 44
  ];

  sint32 default_sint32 = 65 [
    default = -45
  ];

  sint64 default_sint64 = 66 [
    default = 46
  ];

  fixed32 default_fixed32 = 67 [
    default = 47
  ];

  fixed64 default_fixed64 = 68 [
    default = 48
  ];

  sfixed32 default_sfixed32 = 69 [
    default = 49
  ];

  sfixed64 default_sfixed64 = 70 [
    default = -50
  ];

  float default_float = 71 [
    default = 51.5
  ];

  double default_double = 72 [
    default = 5.2e4
  ];

  bool default_bool = 73 [
    default = true
  ];

  string default_string = 74 [
    default = "hello"
  ];

  bytes default_bytes = 75 [
    default = "world"
  ];

  NestedEnum default_nested_enum = 81 [
    default = BAR
  ];

  ForeignEnum default_foreign_enum = 82 [
    default = FOREIGN_BAR
  ];

  protobuf_unittest_import.ImportEnum default_import_enum = 83 [
    default = IMPORT_BAR
  ];

  string default_string_piece = 84 [
    ctype = STRING_PIECE,
    default = "abc"
  ];

  string default_cord = 85 [
    ctype = CORD,
    default = "123"
  ];

  // For oneof test
  oneof oneof_field {
    uint32 oneof_uint32 = 111;
    NestedMessage oneof_nested_message = 112;
    string oneof_string = 113;
    bytes oneof_bytes = 114;
    string oneof_cord = 115 [
      ctype = CORD
    ];

    string oneof_string_piece = 116 [
      ctype = STRING_PIECE
    ];

    NestedMessage oneof_lazy_nested_message = 117 [
      lazy = true
    ];
  }
}

// This proto includes a recursively nested message.
message NestedTestAllTypes {
  NestedTestAllTypes child = 1;
  TestAllTypes payload = 2;
  repeated NestedTestAllTypes repeated_child = 3;
  NestedTestAllTypes lazy_child = 4 [
    lazy = true
  ];

  TestAllTypes eager_child = 5 [
    lazy = false
  ];
}

message TestDeprecatedFields {
  int32 deprecated_int32 = 1 [
    deprecated = true
  ];

  repeated string deprecated_repeated_string = 4 [
    deprecated = true
  ];

  TestAllTypes.NestedMessage deprecated_message = 3 [
    deprecated = true
  ];

  oneof oneof_fields {
    int32 deprecated_int32_in_oneof = 2 [
      deprecated = true
    ];
  }

  TestDeprecatedFields nested = 5;
}

message TestDeprecatedMessage {
  option deprecated = true;
}

// Define these after TestAllTypes to make sure the compiler can handle
// that.
message ForeignMessage {
  int32 c = 1;
  int32 d = 2;
}

enum ForeignEnum {
  FOREIGN_FOO = 4;
  FOREIGN_BAR = 5;
  FOREIGN_BAZ = 6;
  FOREIGN_BAX = 32; // (1 << 32) to generate a 64b bitmask would be incorrect.
  FOREIGN_LARGE = 123456; // Large enough to escape the Boxed Integer cache.
}

enum TestDeprecatedEnum {
  option deprecated = true;

  TEST_DEPRECATED_ENUM_UNSPECIFIED = 0;
  TEST_DEPRECATED_ENUM_VALUE1 = 1;
  TEST_DEPRECATED_ENUM_VALUE2 = 2;
}

message TestReservedFields {
  reserved 2, 15, 9 to 11;

  reserved bar, baz;
}

enum TestReservedEnumFields {
  UNKNOWN = 0;

  reserved 2, 15, 9 to 11;

  reserved bar, baz;
}

message TestAllExtensions {
  extensions 1 to max;
}

extend TestAllExtensions {
  // Singular
  int32 optional_int32_extension = 1;
  int64 optional_int64_extension = 2;
  uint32 optional_uint32_extension = 3;
  uint64 optional_uint64_extension = 4;
  sint32 optional_sint32_extension = 5;
  sint64 optional_sint64_extension = 6;
  fixed32 optional_fixed32_extension = 7;
  fixed64 optional_fixed64_extension = 8;
  sfixed32 optional_sfixed32_extension = 9;
  sfixed64 optional_sfixed64_extension = 10;
  float optional_float_extension = 11;
  double optional_double_extension = 12;
  bool optional_bool_extension = 13;
  string optional_string_extension = 14;
  bytes optional_bytes_extension = 15;
  OptionalGroup_extension optionalgroup_extension = 16 [
    features.message_encoding = DELIMITED
  ];

  TestAllTypes.NestedMessage optional_nested_message_extension = 18;
  ForeignMessage optional_foreign_message_extension = 19;
  protobuf_unittest_import.ImportMessage optional_import_message_extension = 20;
  TestAllTypes.NestedEnum optional_nested_enum_extension = 21;
  ForeignEnum optional_foreign_enum_extension = 22;
  protobuf_unittest_import.ImportEnum optional_import_enum_extension = 23;
  string optional_string_piece_extension = 24 [
    ctype = STRING_PIECE
  ];

  // TODO: ctype=CORD is not supported for extension. Add
  // ctype=CORD option back after it is supported.
  string optional_cord_extension = 25;
  bytes optional_bytes_cord_extension = 86;

  protobuf_unittest_import.PublicImportMessage
      optional_public_import_message_extension = 26;
  TestAllTypes.NestedMessage optional_lazy_message_extension = 27 [
    lazy = true
  ];

  TestAllTypes.NestedMessage optional_unverified_lazy_message_extension = 28 [
    unverified_lazy = true
  ];

  // Repeated
  repeated int32 repeated_int32_extension = 31;
  repeated int64 repeated_int64_extension = 32;
  repeated uint32 repeated_uint32_extension = 33;
  repeated uint64 repeated_uint64_extension = 34;
  repeated sint32 repeated_sint32_extension = 35;
  repeated sint64 repeated_sint64_extension = 36;
  repeated fixed32 repeated_fixed32_extension = 37;
  repeated fixed64 repeated_fixed64_extension = 38;
  repeated sfixed32 repeated_sfixed32_extension = 39;
  repeated sfixed64 repeated_sfixed64_extension = 40;
  repeated float repeated_float_extension = 41;
  repeated double repeated_double_extension = 42;
  repeated bool repeated_bool_extension = 43;
  repeated string repeated_string_extension = 44;
  repeated bytes repeated_bytes_extension = 45;
  repeated RepeatedGroup_extension repeatedgroup_extension = 46 [
    features.message_encoding = DELIMITED
  ];

  repeated TestAllTypes.NestedMessage repeated_nested_message_extension = 48;
  repeated ForeignMessage repeated_foreign_message_extension = 49;
  repeated protobuf_unittest_import.ImportMessage
      repeated_import_message_extension = 50;
  repeated TestAllTypes.NestedEnum repeated_nested_enum_extension = 51;
  repeated ForeignEnum repeated_foreign_enum_extension = 52;
  repeated protobuf_unittest_import.ImportEnum repeated_import_enum_extension = 53;
  repeated string repeated_string_piece_extension = 54 [
    ctype = STRING_PIECE
  ];

  // TODO: ctype=CORD is not supported for extension. Add
  // ctype=CORD option back after it is supported.
  repeated string repeated_cord_extension = 55;
  repeated TestAllTypes.NestedMessage repeated_lazy_message_extension = 57 [
    lazy = true
  ];

  // Singular with defaults
  int32 default_int32_extension = 61 [
    default = 41
  ];

  int64 default_int64_extension = 62 [
    default = 42
  ];

  uint32 default_uint32_extension = 63 [
    default = 43
  ];

  uint64 default_uint64_extension = 64 [
    default = 44
  ];

  sint32 default_sint32_extension = 65 [
    default = -45
  ];

  sint64 default_sint64_extension = 66 [
    default = 46
  ];

  fixed32 default_fixed32_extension = 67 [
    default = 47
  ];

  fixed64 default_fixed64_extension = 68 [
    default = 48
  ];

  sfixed32 default_sfixed32_extension = 69 [
    default = 49
  ];

  sfixed64 default_sfixed64_extension = 70 [
    default = -50
  ];

  float default_float_extension = 71 [
    default = 51.5
  ];

  double default_double_extension = 72 [
    default = 5.2e4
  ];

  bool default_bool_extension = 73 [
    default = true
  ];

  string default_string_extension = 74 [
    default = "hello"
  ];

  bytes default_bytes_extension = 75 [
    default = "world"
  ];

  TestAllTypes.NestedEnum default_nested_enum_extension = 81 [
    default = BAR
  ];

  ForeignEnum default_foreign_enum_extension = 82 [
    default = FOREIGN_BAR
  ];

  protobuf_unittest_import.ImportEnum default_import_enum_extension = 83 [
    default = IMPORT_BAR
  ];

  string default_string_piece_extension = 84 [
    ctype = STRING_PIECE,
    default = "abc"
  ];

  // TODO: ctype=CORD is not supported for extension. Add
  // ctype=CORD option back after it is supported.
  string default_cord_extension = 85 [
    default = "123"
  ];

  // For oneof test
  uint32 oneof_uint32_extension = 111;
  TestAllTypes.NestedMessage oneof_nested_message_extension = 112;
  string oneof_string_extension = 113;
  bytes oneof_bytes_extension = 114;
}

message OptionalGroup_extension {
  int32 a = 17;
}

message RepeatedGroup_extension {
  int32 a = 47;
}

message TestMixedFieldsAndExtensions {
  int32 a = 1;
  repeated fixed32 b = 3;

  extensions 2, 4;

  extend TestMixedFieldsAndExtensions {
    int32 c = 2;
    repeated fixed32 d = 4;
  }
}

message TestGroup {
  message OptionalGroup {
    int32 a = 17;
    int32 zz = 89;  // fast table size must be at least 16, for this
                    // field to be parsed by the fast parser, since
                    // 89 - 17 = 72 is a multiple of 8.
  }

  OptionalGroup optionalgroup = 16 [
    features.message_encoding = DELIMITED
  ];

  ForeignEnum optional_foreign_enum = 22;
}

message TestGroupExtension {
  extensions 1 to max;
}

message TestNestedExtension {
  extend TestAllExtensions {
    // Check for bug where string extensions declared in tested scope did not
    // compile.
    string test = 1002 [
      default = "test"
    ];

    // Used to test if generated extension name is correct when there are
    // underscores.
    string nested_string_extension = 1003;
  }

  extend TestGroupExtension {
    OptionalGroup_extension optionalgroup_extension = 16 [
      features.message_encoding = DELIMITED
    ];

    ForeignEnum optional_foreign_enum_extension = 22;
  }

  message OptionalGroup_extension {
    int32 a = 17;
  }
}

message TestChildExtension {
  string a = 1;
  string b = 2;
  TestAllExtensions optional_extension = 3;
}

// Emulates wireformat data of TestChildExtension with dynamic extension
// (DynamicExtension).
message TestChildExtensionData {
  message NestedTestAllExtensionsData {
    message NestedDynamicExtensions {
      int32 a = 1;
      int32 b = 2;
    }

    NestedDynamicExtensions dynamic = 409707008;
  }

  string a = 1;
  string b = 2;
  NestedTestAllExtensionsData optional_extension = 3;
}

message TestNestedChildExtension {
  int32 a = 1;
  TestChildExtension child = 2;
}

// Emulates wireformat data of TestNestedChildExtension with dynamic extension
// (DynamicExtension).
message TestNestedChildExtensionData {
  int32 a = 1;
  TestChildExtensionData child = 2;
}

// Required and closed enum fields are considered unknown fields if the value is
// not valid. We need to make sure it functions as expected.
message TestRequiredEnum {
  ForeignEnum required_enum = 1 [
    features.field_presence = LEGACY_REQUIRED
  ];

  // A dummy optional field.
  int32 a = 2;
}

// Required and open enum accepts invalid enum values.
enum ForeignOpenEnum {
  option features.enum_type = OPEN;

  FOREIGN_OPEN_UNKNOWN = 0;
  FOREIGN_OPEN_FOO = 4;
  FOREIGN_OPEN_BAR = 5;
  FOREIGN_OPEN_BAZ = 6;
  FOREIGN_OPEN_BAX = 32;  // (1 << 32) to generate a 64b bitmask would be
                          // incorrect.
}

message TestRequiredOpenEnum {
  ForeignOpenEnum required_enum = 1 [
    features.field_presence = LEGACY_REQUIRED
  ];

  // A dummy optional field.
  int32 a = 2;
}

// TestRequiredEnum + using enum values that won't fit to 64 bitmask.
message TestRequiredEnumNoMask {
  enum NestedEnum {
    UNSPECIFIED = 0;
    FOO = 2;
    BAR = 100;
    BAZ = -1; // Intentionally negative.
  }

  NestedEnum required_enum = 1 [
    features.field_presence = LEGACY_REQUIRED
  ];

  // A dummy optional field.
  int32 a = 2;
}

message TestRequiredEnumMulti {
  enum NestedEnum {
    UNSPECIFIED = 0;
    FOO = 1;
    BAR = 2;
    BAZ = 100;
  }

  // Intentionally placed in descending field number to force sorting in closed
  // enum verification.
  NestedEnum required_enum_4 = 4 [
    features.field_presence = LEGACY_REQUIRED
  ];

  int32 a_3 = 3;
  NestedEnum required_enum_2 = 2 [
    features.field_presence = LEGACY_REQUIRED
  ];

  ForeignEnum required_enum_1 = 1 [
    features.field_presence = LEGACY_REQUIRED
  ];
}

message TestRequiredNoMaskMulti {
  enum NestedEnum {
    UNSPECIFIED = 0;
    FOO = 1;
    BAR = 2;
    BAZ = 100;
  }

  // Intentionally placed in descending field number to force sorting in closed
  // enum verification. Also, using large field numbers to use tag only
  // matching for required fields.
  fixed32 required_fixed32_80 = 80 [
    features.field_presence = LEGACY_REQUIRED
  ];

  fixed32 required_fixed32_70 = 70 [
    features.field_presence = LEGACY_REQUIRED
  ];

  NestedEnum required_enum_64 = 64 [
    features.field_presence = LEGACY_REQUIRED
  ];

  NestedEnum required_enum_4 = 4 [
    features.field_presence = LEGACY_REQUIRED
  ];

  int32 a_3 = 3;
  NestedEnum required_enum_2 = 2 [
    features.field_presence = LEGACY_REQUIRED
  ];

  ForeignEnum required_enum_1 = 1 [
    features.field_presence = LEGACY_REQUIRED
  ];
}

// We have separate messages for testing required fields because it's
// annoying to have to fill in required fields in TestProto in order to
// do anything with it.  Note that we don't need to test every type of
// required filed because the code output is basically identical to
// optional fields for all types.
message TestRequired {
  int32 a = 1 [
    features.field_presence = LEGACY_REQUIRED
  ];

  int32 dummy2 = 2;
  int32 b = 3 [
    features.field_presence = LEGACY_REQUIRED
  ];

  extend TestAllExtensions {
    TestRequired single = 1000;
    repeated TestRequired multi = 1001;
  }

  // Pad the field count to 32 so that we can test that IsInitialized()
  // properly checks multiple elements of has_bits_.
  int32 dummy4 = 4;
  int32 dummy5 = 5;
  int32 dummy6 = 6;
  int32 dummy7 = 7;
  int32 dummy8 = 8;
  int32 dummy9 = 9;
  int32 dummy10 = 10;
  int32 dummy11 = 11;
  int32 dummy12 = 12;
  int32 dummy13 = 13;
  int32 dummy14 = 14;
  int32 dummy15 = 15;
  int32 dummy16 = 16;
  int32 dummy17 = 17;
  int32 dummy18 = 18;
  int32 dummy19 = 19;
  int32 dummy20 = 20;
  int32 dummy21 = 21;
  int32 dummy22 = 22;
  int32 dummy23 = 23;
  int32 dummy24 = 24;
  int32 dummy25 = 25;
  int32 dummy26 = 26;
  int32 dummy27 = 27;
  int32 dummy28 = 28;
  int32 dummy29 = 29;
  int32 dummy30 = 30;
  int32 dummy31 = 31;
  int32 dummy32 = 32;
  int32 c = 33 [
    features.field_presence = LEGACY_REQUIRED
  ];

  // Add an optional child message to make this non-trivial for go/pdlazy.
  ForeignMessage optional_foreign = 34;
}

message TestRequiredForeign {
  TestRequired optional_message = 1;
  repeated TestRequired repeated_message = 2;
  int32 dummy = 3;

  // Missing required fields must not affect verification of child messages.
  NestedTestAllTypes optional_lazy_message = 4 [
    lazy = true
  ];
}

message TestRequiredMessage {
  TestRequired optional_message = 1;
  repeated TestRequired repeated_message = 2;
  TestRequired required_message = 3 [
    features.field_presence = LEGACY_REQUIRED
  ];
}

message TestNestedRequiredForeign {
  TestNestedRequiredForeign child = 1;
  TestRequiredForeign payload = 2;
  int32 dummy = 3;

  // optional message to test required closed enum.
  TestRequiredEnum required_enum = 5;
  TestRequiredEnumNoMask required_enum_no_mask = 6;
  TestRequiredEnumMulti required_enum_multi = 7;
  TestRequiredNoMaskMulti required_no_mask = 9;
}

// Test that we can use NestedMessage from outside TestAllTypes.
message TestForeignNested {
  TestAllTypes.NestedMessage foreign_nested = 1;
}

// TestEmptyMessage is used to test unknown field support.
message TestEmptyMessage {
}

// Like above, but declare all field numbers as potential extensions.  No
// actual extensions should ever be defined for this type.
message TestEmptyMessageWithExtensions {
  extensions 1 to max;
}

// Needed for a Python test.
message TestPickleNestedMessage {
  message NestedMessage {
    int32 bb = 1;

    message NestedNestedMessage {
      int32 cc = 1;
    }
  }
}

message TestMultipleExtensionRanges {
  extensions 42;
  extensions 4143 to 4243;
  extensions 65536 to max;
}

// Test that really large tag numbers don't break anything.
message TestReallyLargeTagNumber {
  // The largest possible tag number is 2^28 - 1, since the wire format uses
  // three bits to communicate wire type.
  int32 a = 1;
  int32 bb = 268435455;
}

message TestRecursiveMessage {
  TestRecursiveMessage a = 1;
  int32 i = 2;
}

// Test that mutual recursion works.
message TestMutualRecursionA {
  message SubMessage {
    TestMutualRecursionB b = 1;
  }

  TestMutualRecursionB bb = 1;

  message SubGroup {
    SubMessage sub_message = 3; // Needed because of bug in javatest
    TestAllTypes not_in_this_scc = 4;
  }

  SubGroup subgroup = 2 [
    features.message_encoding = DELIMITED
  ];

  message SubGroupR {
    TestAllTypes payload = 6;
  }

  repeated SubGroupR subgroupr = 5 [
    features.message_encoding = DELIMITED
  ];
}

message TestMutualRecursionB {
  TestMutualRecursionA a = 1;
  int32 optional_int32 = 2;
}

message TestIsInitialized {
  message SubMessage {
    message SubGroup {
      int32 i = 2 [
        features.field_presence = LEGACY_REQUIRED
      ];
    }

    SubGroup subgroup = 1 [
      features.message_encoding = DELIMITED
    ];
  }

  SubMessage sub_message = 1;
}

// Test that groups have disjoint field numbers from their siblings and
// parents.  This is NOT possible in proto1; only google.protobuf.  When attempting
// to compile with proto1, this will emit an error; so we only include it
// in protobuf_unittest_proto.
message TestDupFieldNumber {// NO_PROTO1
  int32 a = 1; // NO_PROTO1
  message Foo { // NO_PROTO1
    int32 a = 1; // NO_PROTO1
  } // NO_PROTO1
  Foo foo = 2 [features.message_encoding = DELIMITED]; // NO_PROTO1
  message Bar { // NO_PROTO1
    int32 a = 1; // NO_PROTO1
  } // NO_PROTO1
  Bar bar = 3 [features.message_encoding = DELIMITED]; // NO_PROTO1
} // NO_PROTO1

// Additional messages for testing lazy fields.
message TestEagerMessage {
  TestAllTypes sub_message = 1 [
    lazy = false
  ];
}

message TestLazyMessage {
  TestAllTypes sub_message = 1 [
    lazy = true
  ];
}

message TestLazyMessageRepeated {
  repeated TestLazyMessage repeated_message = 1;
}

message TestEagerMaybeLazy {
  message NestedMessage {
    TestPackedTypes packed = 1;
  }

  TestAllTypes message_foo = 1;
  TestAllTypes message_bar = 2;
  NestedMessage message_baz = 3;
}

// Needed for a Python test.
message TestNestedMessageHasBits {
  message NestedMessage {
    repeated int32 nestedmessage_repeated_int32 = 1;
    repeated ForeignMessage nestedmessage_repeated_foreignmessage = 2;
  }

  NestedMessage optional_nested_message = 1;
}

// Test an enum that has multiple values with the same number.
enum TestEnumWithDupValue {
  option allow_alias = true;

  FOO1 = 1;
  BAR1 = 2;
  BAZ = 3;
  FOO2 = 1;
  BAR2 = 2;
}

// Test an enum with large, unordered values.
enum TestSparseEnum {
  SPARSE_A = 123;
  SPARSE_B = 62374;
  SPARSE_C = 12589234;
  SPARSE_D = -15;
  SPARSE_E = -53452;
  SPARSE_F = 0;
  SPARSE_G = 2;
}

// Test message with CamelCase field names.  This violates Protocol Buffer
// standard style.
message TestCamelCaseFieldNames {
  int32 PrimitiveField = 1;
  string StringField = 2;
  ForeignEnum EnumField = 3;
  ForeignMessage MessageField = 4;
  string StringPieceField = 5 [
    ctype = STRING_PIECE
  ];

  string CordField = 6 [
    ctype = CORD
  ];

  repeated int32 RepeatedPrimitiveField = 7;
  repeated string RepeatedStringField = 8;
  repeated ForeignEnum RepeatedEnumField = 9;
  repeated ForeignMessage RepeatedMessageField = 10;
  repeated string RepeatedStringPieceField = 11 [
    ctype = STRING_PIECE
  ];

  repeated string RepeatedCordField = 12 [
    ctype = CORD
  ];
}

// We list fields out of order, to ensure that we're using field number and not
// field index to determine serialization order.
message TestFieldOrderings {
  string my_string = 11;

  extensions 2 to 10;

  int64 my_int = 1;

  extensions 12 to 100;

  float my_float = 101;

  message NestedMessage {
    int64 oo = 2;

    // The field name "b" fails to compile in proto1 because it conflicts with
    // a local variable named "b" in one of the generated methods.  Doh.
    // This file needs to compile in proto1 to test backwards-compatibility.
    int32 bb = 1;
  }

  NestedMessage optional_nested_message = 200;
}

extend TestFieldOrderings {
  string my_extension_string = 50;
  int32 my_extension_int = 5;
}

message TestExtensionOrderings1 {
  extend TestFieldOrderings {
    TestExtensionOrderings1 test_ext_orderings1 = 13;
  }

  string my_string = 1;
}

message TestExtensionOrderings2 {
  extend TestFieldOrderings {
    TestExtensionOrderings2 test_ext_orderings2 = 12;
  }

  message TestExtensionOrderings3 {
    extend TestFieldOrderings {
      TestExtensionOrderings3 test_ext_orderings3 = 14;
    }

    string my_string = 1;
  }

  string my_string = 1;
}

message TestExtremeDefaultValues {
  bytes escaped_bytes = 1 [
    default =
        "\0\001\a\b\f\n\r\t\v\\\'\"\xfe"
  ];

  uint32 large_uint32 = 2 [
    default = 0xFFFFFFFF
  ];

  uint64 large_uint64 = 3 [
    default = 0xFFFFFFFFFFFFFFFF
  ];

  int32 small_int32 = 4 [
    default = -0x7FFFFFFF
  ];

  int64 small_int64 = 5 [
    default = -0x7FFFFFFFFFFFFFFF
  ];

  int32 really_small_int32 = 21 [
    default = -0x80000000
  ];

  int64 really_small_int64 = 22 [
    default = -0x8000000000000000
  ];

  // The default value here is UTF-8 for "\u1234".  (We could also just type
  // the UTF-8 text directly into this text file rather than escape it, but
  // lots of people use editors that would be confused by this.)
  string utf8_string = 6 [
    default = "\341\210\264"
  ];

  // Tests for single-precision floating-point values.
  float zero_float = 7 [
    default = 0
  ];

  float one_float = 8 [
    default = 1
  ];

  float small_float = 9 [
    default = 1.5
  ];

  float negative_one_float = 10 [
    default = -1
  ];

  float negative_float = 11 [
    default = -1.5
  ];

  // Using exponents
  float large_float = 12 [
    default = 2e8
  ];

  float small_negative_float = 13 [
    default = -8e-28
  ];

  // Text for nonfinite floating-point values.
  double inf_double = 14 [
    default = inf
  ];

  double neg_inf_double = 15 [
    default = -inf
  ];

  double nan_double = 16 [
    default = nan
  ];

  float inf_float = 17 [
    default = inf
  ];

  float neg_inf_float = 18 [
    default = -inf
  ];

  float nan_float = 19 [
    default = nan
  ];

  // Tests for C++ trigraphs.
  // Trigraphs should be escaped in C++ generated files, but they should not be
  // escaped for other languages.
  // Note that in .proto file, "\?" is a valid way to escape ? in string
  // literals.
  string cpp_trigraph = 20 [
    default = "? \? ?? \?? \??? ??/ ?\?-"
  ];

  // String defaults containing the character '\000'
  string string_with_zero = 23 [
    default = "hel\000lo"
  ];

  bytes bytes_with_zero = 24 [
    default = "wor\000ld"
  ];

  string string_piece_with_zero = 25 [
    ctype = STRING_PIECE,
    default = "ab\000c"
  ];

  string cord_with_zero = 26 [
    ctype = CORD,
    default = "12\0003"
  ];

  string replacement_string = 27 [
    default = "${unknown}"
  ];
}

message SparseEnumMessage {
  TestSparseEnum sparse_enum = 1;
}

// Test String and Bytes: string is for valid UTF-8 strings
message OneString {
  string data = 1;
}

message MoreString {
  repeated string data = 1;
}

message OneBytes {
  bytes data = 1;
}

message MoreBytes {
  repeated bytes data = 1;
}

message ManyOptionalString {
  string str1 = 1;
  string str2 = 2;
  string str3 = 3;
  string str4 = 4;
  string str5 = 5;
  string str6 = 6;
  string str7 = 7;
  string str8 = 8;
  string str9 = 9;
  string str10 = 10;
  string str11 = 11;
  string str12 = 12;
  string str13 = 13;
  string str14 = 14;
  string str15 = 15;
  string str16 = 16;
  string str17 = 17;
  string str18 = 18;
  string str19 = 19;
  string str20 = 20;
  string str21 = 21;
  string str22 = 22;
  string str23 = 23;
  string str24 = 24;
  string str25 = 25;
  string str26 = 26;
  string str27 = 27;
  string str28 = 28;
  string str29 = 29;
  string str30 = 30;
  string str31 = 31;
  string str32 = 32;
}

// Test int32, uint32, int64, uint64, and bool are all compatible
message Int32Message {
  int32 data = 1;
}

message Uint32Message {
  uint32 data = 1;
}

message Int64Message {
  int64 data = 1;
}

message Uint64Message {
  uint64 data = 1;
}

message BoolMessage {
  bool data = 1;
}

// Test oneofs.
message TestOneof {
  oneof foo {
    int32 foo_int = 1;
    string foo_string = 2;
    TestAllTypes foo_message = 3;
    FooGroup foogroup = 4 [
      features.message_encoding = DELIMITED
    ];
  }

  message FooGroup {
    int32 a = 5;
    string b = 6;
  }
}

message TestOneofBackwardsCompatible {
  int32 foo_int = 1;
  string foo_string = 2;
  TestAllTypes foo_message = 3;

  message FooGroup {
    int32 a = 5;
    string b = 6;
  }

  FooGroup foogroup = 4 [
    features.message_encoding = DELIMITED
  ];
}

message TestOneof2 {
  oneof foo {
    int32 foo_int = 1;
    string foo_string = 2;
    string foo_cord = 3 [
      ctype = CORD
    ];

    string foo_string_piece = 4 [
      ctype = STRING_PIECE
    ];

    bytes foo_bytes = 5;
    NestedEnum foo_enum = 6;
    NestedMessage foo_message = 7;
    FooGroup foogroup = 8 [
      features.message_encoding = DELIMITED
    ];

    NestedMessage foo_lazy_message = 11 [
      lazy = true
    ];

    bytes foo_bytes_cord = 30 [
      ctype = CORD
    ];
  }

  message FooGroup {
    int32 a = 9;
    string b = 10;
  }

  oneof bar {
    int32 bar_int = 12 [
      default = 5
    ];

    string bar_string = 13 [
      default = "STRING"
    ];

    string bar_cord = 14 [
      ctype = CORD,
      default = "CORD"
    ];

    string bar_string_piece = 15 [
      ctype = STRING_PIECE,
      default = "SPIECE"
    ];

    bytes bar_bytes = 16 [
      default = "BYTES"
    ];

    NestedEnum bar_enum = 17 [
      default = BAR
    ];

    string bar_string_with_empty_default = 20 [
      default = ""
    ];

    string bar_cord_with_empty_default = 21 [
      ctype = CORD,
      default = ""
    ];

    string bar_string_piece_with_empty_default = 22 [
      ctype = STRING_PIECE,
      default = ""
    ];

    bytes bar_bytes_with_empty_default = 23 [
      default = ""
    ];
  }

  int32 baz_int = 18;
  string baz_string = 19 [
    default = "BAZ"
  ];

  message NestedMessage {
    int64 moo_int = 1;
    repeated int32 corge_int = 2;
    NestedMessage child = 3;
  }

  enum NestedEnum {
    FOO = 1;
    BAR = 2;
    BAZ = 3;
  }
}

message TestRequiredOneof {
  oneof foo {
    int32 foo_int = 1;
    string foo_string = 2;
    NestedMessage foo_message = 3;
    NestedMessage foo_lazy_message = 4 [
      lazy = true
    ];
  }

  message NestedMessage {
    double required_double = 1 [
      features.field_presence = LEGACY_REQUIRED
    ];
  }
}

// Test messages for packed fields

message TestPackedTypes {
  repeated int32 packed_int32 = 90 [
    features.repeated_field_encoding = PACKED
  ];

  repeated int64 packed_int64 = 91 [
    features.repeated_field_encoding = PACKED
  ];

  repeated uint32 packed_uint32 = 92 [
    features.repeated_field_encoding = PACKED
  ];

  repeated uint64 packed_uint64 = 93 [
    features.repeated_field_encoding = PACKED
  ];

  repeated sint32 packed_sint32 = 94 [
    features.repeated_field_encoding = PACKED
  ];

  repeated sint64 packed_sint64 = 95 [
    features.repeated_field_encoding = PACKED
  ];

  repeated fixed32 packed_fixed32 = 96 [
    features.repeated_field_encoding = PACKED
  ];

  repeated fixed64 packed_fixed64 = 97 [
    features.repeated_field_encoding = PACKED
  ];

  repeated sfixed32 packed_sfixed32 = 98 [
    features.repeated_field_encoding = PACKED
  ];

  repeated sfixed64 packed_sfixed64 = 99 [
    features.repeated_field_encoding = PACKED
  ];

  repeated float packed_float = 100 [
    features.repeated_field_encoding = PACKED
  ];

  repeated double packed_double = 101 [
    features.repeated_field_encoding = PACKED
  ];

  repeated bool packed_bool = 102 [
    features.repeated_field_encoding = PACKED
  ];

  repeated ForeignEnum packed_enum = 103 [
    features.repeated_field_encoding = PACKED
  ];
}

// A message with the same fields as TestPackedTypes, but without packing. Used
// to test packed <-> unpacked wire compatibility.
message TestUnpackedTypes {
  repeated int32 unpacked_int32 = 90;
  repeated int64 unpacked_int64 = 91;
  repeated uint32 unpacked_uint32 = 92;
  repeated uint64 unpacked_uint64 = 93;
  repeated sint32 unpacked_sint32 = 94;
  repeated sint64 unpacked_sint64 = 95;
  repeated fixed32 unpacked_fixed32 = 96;
  repeated fixed64 unpacked_fixed64 = 97;
  repeated sfixed32 unpacked_sfixed32 = 98;
  repeated sfixed64 unpacked_sfixed64 = 99;
  repeated float unpacked_float = 100;
  repeated double unpacked_double = 101;
  repeated bool unpacked_bool = 102;
  repeated ForeignEnum unpacked_enum = 103;
}

message TestPackedExtensions {
  extensions 1 to max;
}

extend TestPackedExtensions {
  repeated int32 packed_int32_extension = 90 [
    features.repeated_field_encoding = PACKED
  ];

  repeated int64 packed_int64_extension = 91 [
    features.repeated_field_encoding = PACKED
  ];

  repeated uint32 packed_uint32_extension = 92 [
    features.repeated_field_encoding = PACKED
  ];

  repeated uint64 packed_uint64_extension = 93 [
    features.repeated_field_encoding = PACKED
  ];

  repeated sint32 packed_sint32_extension = 94 [
    features.repeated_field_encoding = PACKED
  ];

  repeated sint64 packed_sint64_extension = 95 [
    features.repeated_field_encoding = PACKED
  ];

  repeated fixed32 packed_fixed32_extension = 96 [
    features.repeated_field_encoding = PACKED
  ];

  repeated fixed64 packed_fixed64_extension = 97 [
    features.repeated_field_encoding = PACKED
  ];

  repeated sfixed32 packed_sfixed32_extension = 98 [
    features.repeated_field_encoding = PACKED
  ];

  repeated sfixed64 packed_sfixed64_extension = 99 [
    features.repeated_field_encoding = PACKED
  ];

  repeated float packed_float_extension = 100 [
    features.repeated_field_encoding = PACKED
  ];

  repeated double packed_double_extension = 101 [
    features.repeated_field_encoding = PACKED
  ];

  repeated bool packed_bool_extension = 102 [
    features.repeated_field_encoding = PACKED
  ];

  repeated ForeignEnum packed_enum_extension = 103 [
    features.repeated_field_encoding = PACKED
  ];
}

message TestUnpackedExtensions {
  extensions 1 to max;
}

extend TestUnpackedExtensions {
  repeated int32 unpacked_int32_extension = 90;
  repeated int64 unpacked_int64_extension = 91;
  repeated uint32 unpacked_uint32_extension = 92;
  repeated uint64 unpacked_uint64_extension = 93;
  repeated sint32 unpacked_sint32_extension = 94;
  repeated sint64 unpacked_sint64_extension = 95;
  repeated fixed32 unpacked_fixed32_extension = 96;
  repeated fixed64 unpacked_fixed64_extension = 97;
  repeated sfixed32 unpacked_sfixed32_extension = 98;
  repeated sfixed64 unpacked_sfixed64_extension = 99;
  repeated float unpacked_float_extension = 100;
  repeated double unpacked_double_extension = 101;
  repeated bool unpacked_bool_extension = 102;
  repeated ForeignEnum unpacked_enum_extension = 103;
}

// Used by ExtensionSetTest/DynamicExtensions.  The test actually builds
// a set of extensions to TestAllExtensions dynamically, based on the fields
// of this message type.
message TestDynamicExtensions {
  enum DynamicEnumType {
    DYNAMIC_FOO = 2200;
    DYNAMIC_BAR = 2201;
    DYNAMIC_BAZ = 2202;
  }

  message DynamicMessageType {
    int32 dynamic_field = 2100;
  }

  fixed32 scalar_extension = 2000;
  ForeignEnum enum_extension = 2001;
  DynamicEnumType dynamic_enum_extension = 2002;
  ForeignMessage message_extension = 2003;
  DynamicMessageType dynamic_message_extension = 2004;
  repeated string repeated_extension = 2005;
  repeated sint32 packed_extension = 2006 [
    features.repeated_field_encoding = PACKED
  ];
}

message TestRepeatedString {
  repeated string repeated_string1 = 1;
  repeated string repeated_string2 = 2;
  repeated bytes repeated_bytes11 = 11;
  repeated bytes repeated_bytes12 = 12;
}

message TestRepeatedScalarDifferentTagSizes {
  // Parsing repeated fixed size values used to fail. This message needs to be
  // used in order to get a tag of the right size; all of the repeated fields
  // in TestAllTypes didn't trigger the check.
  repeated fixed32 repeated_fixed32 = 12;

  // Check for a varint type, just for good measure.
  repeated int32 repeated_int32 = 13;

  // These have two-byte tags.
  repeated fixed64 repeated_fixed64 = 2046;
  repeated int64 repeated_int64 = 2047;

  // Three byte tags.
  repeated float repeated_float = 262142;
  repeated uint64 repeated_uint64 = 262143;
}

// Test that if an optional or required message/group field appears multiple
// times in the input, they need to be merged.
message TestParsingMerge {
  // RepeatedFieldsGenerator defines matching field types as TestParsingMerge,
  // except that all fields are repeated. In the tests, we will serialize the
  // RepeatedFieldsGenerator to bytes, and parse the bytes to TestParsingMerge.
  // Repeated fields in RepeatedFieldsGenerator are expected to be merged into
  // the corresponding required/optional fields in TestParsingMerge.
  message RepeatedFieldsGenerator {
    repeated TestAllTypes field1 = 1;
    repeated TestAllTypes field2 = 2;
    repeated TestAllTypes field3 = 3;

    message Group1 {
      TestAllTypes field1 = 11;
    }

    repeated Group1 group1 = 10 [
      features.message_encoding = DELIMITED
    ];

    message Group2 {
      TestAllTypes field1 = 21;
    }

    repeated Group2 group2 = 20 [
      features.message_encoding = DELIMITED
    ];

    repeated TestAllTypes ext1 = 1000;
    repeated TestAllTypes ext2 = 1001;
  }

  TestAllTypes required_all_types = 1 [
    features.field_presence = LEGACY_REQUIRED
  ];

  TestAllTypes optional_all_types = 2;
  repeated TestAllTypes repeated_all_types = 3;

  message OptionalGroup {
    TestAllTypes optional_group_all_types = 11;
  }

  OptionalGroup optionalgroup = 10 [
    features.message_encoding = DELIMITED
  ];

  message RepeatedGroup {
    TestAllTypes repeated_group_all_types = 21;
  }

  repeated RepeatedGroup repeatedgroup = 20 [
    features.message_encoding = DELIMITED
  ];

  extensions 1000 to max;

  extend TestParsingMerge {
    TestAllTypes optional_ext = 1000;
    repeated TestAllTypes repeated_ext = 1001;
  }
}

// Test that the correct exception is thrown by parseFrom in a corner case
// involving merging, extensions, and required fields.
message TestMergeException {
  TestAllExtensions all_extensions = 1;
}

message TestCommentInjectionMessage {
  // */ <- This should not close the generated doc comment
  string a = 1 [
    default = "*/ <- Neither should this."
  ];
}

// Used to check that the c++ code generator re-orders messages to reduce
// padding.
message TestMessageSize {
  bool m1 = 1;
  int64 m2 = 2;
  bool m3 = 3;
  string m4 = 4;
  int32 m5 = 5;
  int64 m6 = 6;
}

message OpenEnumMessage {
  enum TestEnum {
    option features.enum_type = OPEN;

    UNKNOWN = 0;
    FOO = 1;
    BAR = 2;
    BAZ = 3;
  }

  TestEnum opt_open = 1;

  ForeignEnum opt_closed = 2;
  repeated TestEnum repeated_open = 3;

  repeated ForeignEnum repeated_closed = 4;
}

// Test that RPC services work.
message FooRequest {
}

message FooResponse {
}

message FooClientMessage {
}

message FooServerMessage {
}

service TestService {
  rpc Foo(FooRequest) returns (FooResponse);

  rpc Bar(BarRequest) returns (BarResponse);
}

message BarRequest {
}

message BarResponse {
}

message TestJsonName {
  int32 field_name1 = 1;
  int32 fieldName2 = 2;
  int32 FieldName3 = 3;
  int32 _field_name4 = 4;
  int32 FIELD_NAME5 = 5;
  int32 field_name6 = 6 [
    json_name = "@type"
  ];

  int32 fieldname7 = 7;
}

message TestHugeFieldNumbers {
  int32 optional_int32 = 536870000;
  int32 fixed_32 = 536870001;
  repeated int32 repeated_int32 = 536870002;
  repeated int32 packed_int32 = 536870003 [
    features.repeated_field_encoding = PACKED
  ];

  ForeignEnum optional_enum = 536870004;
  string optional_string = 536870005;
  bytes optional_bytes = 536870006;
  ForeignMessage optional_message = 536870007;

  message OptionalGroup {
    int32 group_a = 536870009;
  }

  OptionalGroup optionalgroup = 536870008 [
    features.message_encoding = DELIMITED
  ];

  map<string, string> string_string_map = 536870010;

  oneof oneof_field {
    uint32 oneof_uint32 = 536870011;
    TestAllTypes oneof_test_all_types = 536870012;
    string oneof_string = 536870013;
    bytes oneof_bytes = 536870014;
  }

  extensions 536860000 to 536869999 [
    declaration = {
      number: 536860000
      full_name: ".protobuf_unittest.test_all_types"
      type: ".protobuf_unittest.TestAllTypes"
    }
  ];
}

extend TestHugeFieldNumbers {
  TestAllTypes test_all_types = 536860000;
}

message TestExtensionInsideTable {
  int32 field1 = 1;
  int32 field2 = 2;
  int32 field3 = 3;
  int32 field4 = 4;

  extensions 5;

  int32 field6 = 6;
  int32 field7 = 7;
  int32 field8 = 8;
  int32 field9 = 9;
  int32 field10 = 10;
}

extend TestExtensionInsideTable {
  int32 test_extension_inside_table_extension = 5;
}

// NOTE: Intentionally nested to mirror go/glep.
message TestNestedGroupExtensionOuter {
  message Layer1OptionalGroup {
    message Layer2RepeatedGroup {
      extensions 3
      //  NOTE: extension metadata is not supported due to targets such as
      //  `//google/protobuf_legacy_opensource/src:shell_scripts_test`,
      //  eee https://screenshot.googleplex.com/Axz2QD8nxjdpyFF
      // [metadata = {
      //  NOTE: can't write type there due to some clever build gen code at
      //  http://google3/google/protobuf/BUILD;l=1247;rcl=411090862
      //  type: "protobuf_unittest.TestNestedGroupExtensionInnerExtension",
      //  name: "inner",
      //  }]
      ;

      string another_field = 6;
    }

    repeated Layer2RepeatedGroup layer2repeatedgroup = 2 [
      features.message_encoding = DELIMITED
    ];

    message Layer2AnotherOptionalRepeatedGroup {
      string but_why_tho = 5;
    }

    repeated Layer2AnotherOptionalRepeatedGroup
        layer2anotheroptionalrepeatedgroup = 4 [
          features.message_encoding = DELIMITED
        ];
  }

  Layer1OptionalGroup layer1optionalgroup = 1 [
    features.message_encoding = DELIMITED
  ];
}

message TestNestedGroupExtensionInnerExtension {
  string inner_name = 1;
}

extend TestNestedGroupExtensionOuter.Layer1OptionalGroup.Layer2RepeatedGroup {
  TestNestedGroupExtensionInnerExtension inner = 3;
}

enum VeryLargeEnum {
  ENUM_LABEL_DEFAULT = 0;
  ENUM_LABEL_1 = 1;
  ENUM_LABEL_2 = 2;
  ENUM_LABEL_3 = 3;
  ENUM_LABEL_4 = 4;
  ENUM_LABEL_5 = 5;
  ENUM_LABEL_6 = 6;
  ENUM_LABEL_7 = 7;
  ENUM_LABEL_8 = 8;
  ENUM_LABEL_9 = 9;
  ENUM_LABEL_10 = 10;
  ENUM_LABEL_11 = 11;
  ENUM_LABEL_12 = 12;
  ENUM_LABEL_13 = 13;
  ENUM_LABEL_14 = 14;
  ENUM_LABEL_15 = 15;
  ENUM_LABEL_16 = 16;
  ENUM_LABEL_17 = 17;
  ENUM_LABEL_18 = 18;
  ENUM_LABEL_19 = 19;
  ENUM_LABEL_20 = 20;
  ENUM_LABEL_21 = 21;
  ENUM_LABEL_22 = 22;
  ENUM_LABEL_23 = 23;
  ENUM_LABEL_24 = 24;
  ENUM_LABEL_25 = 25;
  ENUM_LABEL_26 = 26;
  ENUM_LABEL_27 = 27;
  ENUM_LABEL_28 = 28;
  ENUM_LABEL_29 = 29;
  ENUM_LABEL_30 = 30;
  ENUM_LABEL_31 = 31;
  ENUM_LABEL_32 = 32;
  ENUM_LABEL_33 = 33;
  ENUM_LABEL_34 = 34;
  ENUM_LABEL_35 = 35;
  ENUM_LABEL_36 = 36;
  ENUM_LABEL_37 = 37;
  ENUM_LABEL_38 = 38;
  ENUM_LABEL_39 = 39;
  ENUM_LABEL_40 = 40;
  ENUM_LABEL_41 = 41;
  ENUM_LABEL_42 = 42;
  ENUM_LABEL_43 = 43;
  ENUM_LABEL_44 = 44;
  ENUM_LABEL_45 = 45;
  ENUM_LABEL_46 = 46;
  ENUM_LABEL_47 = 47;
  ENUM_LABEL_48 = 48;
  ENUM_LABEL_49 = 49;
  ENUM_LABEL_50 = 50;
  ENUM_LABEL_51 = 51;
  ENUM_LABEL_52 = 52;
  ENUM_LABEL_53 = 53;
  ENUM_LABEL_54 = 54;
  ENUM_LABEL_55 = 55;
  ENUM_LABEL_56 = 56;
  ENUM_LABEL_57 = 57;
  ENUM_LABEL_58 = 58;
  ENUM_LABEL_59 = 59;
  ENUM_LABEL_60 = 60;
  ENUM_LABEL_61 = 61;
  ENUM_LABEL_62 = 62;
  ENUM_LABEL_63 = 63;
  ENUM_LABEL_64 = 64;
  ENUM_LABEL_65 = 65;
  ENUM_LABEL_66 = 66;
  ENUM_LABEL_67 = 67;
  ENUM_LABEL_68 = 68;
  ENUM_LABEL_69 = 69;
  ENUM_LABEL_70 = 70;
  ENUM_LABEL_71 = 71;
  ENUM_LABEL_72 = 72;
  ENUM_LABEL_73 = 73;
  ENUM_LABEL_74 = 74;
  ENUM_LABEL_75 = 75;
  ENUM_LABEL_76 = 76;
  ENUM_LABEL_77 = 77;
  ENUM_LABEL_78 = 78;
  ENUM_LABEL_79 = 79;
  ENUM_LABEL_80 = 80;
  ENUM_LABEL_81 = 81;
  ENUM_LABEL_82 = 82;
  ENUM_LABEL_83 = 83;
  ENUM_LABEL_84 = 84;
  ENUM_LABEL_85 = 85;
  ENUM_LABEL_86 = 86;
  ENUM_LABEL_87 = 87;
  ENUM_LABEL_88 = 88;
  ENUM_LABEL_89 = 89;
  ENUM_LABEL_90 = 90;
  ENUM_LABEL_91 = 91;
  ENUM_LABEL_92 = 92;
  ENUM_LABEL_93 = 93;
  ENUM_LABEL_94 = 94;
  ENUM_LABEL_95 = 95;
  ENUM_LABEL_96 = 96;
  ENUM_LABEL_97 = 97;
  ENUM_LABEL_98 = 98;
  ENUM_LABEL_99 = 99;
  ENUM_LABEL_100 = 100;
}

message TestExtensionRangeSerialize {
  int32 foo_one = 1;

  extensions 2;
  extensions 3 to 4;

  int32 foo_two = 6;
  int32 foo_three = 7;

  extensions 9 to 10;

  int32 foo_four = 13;

  extensions 15 to 15;
  extensions 17 to 17;
  extensions 19 to 19;

  extend TestExtensionRangeSerialize {
    int32 bar_one = 2;
    int32 bar_two = 4;
    int32 bar_three = 10;
    int32 bar_four = 15;
    int32 bar_five = 19;
  }
}

message TestVerifyInt32Simple {
  int32 optional_int32_1 = 1;
  int32 optional_int32_2 = 2;
  int32 optional_int32_63 = 63;
  int32 optional_int32_64 = 64;
}

message TestVerifyInt32 {
  int32 optional_int32_1 = 1;
  int32 optional_int32_2 = 2;
  int32 optional_int32_63 = 63;
  int32 optional_int32_64 = 64;
  TestAllTypes optional_all_types = 9;
  repeated TestAllTypes repeated_all_types = 10;
}

message TestVerifyMostlyInt32 {
  int64 optional_int64_30 = 30;
  int32 optional_int32_1 = 1;
  int32 optional_int32_2 = 2;
  int32 optional_int32_3 = 3;
  int32 optional_int32_4 = 4;
  int32 optional_int32_63 = 63;
  int32 optional_int32_64 = 64;
  TestAllTypes optional_all_types = 9;
  repeated TestAllTypes repeated_all_types = 10;
}

message TestVerifyMostlyInt32BigFieldNumber {
  int64 optional_int64_30 = 30;
  int32 optional_int32_300 = 300;
  int32 optional_int32_1 = 1;
  int32 optional_int32_2 = 2;
  int32 optional_int32_3 = 3;
  int32 optional_int32_4 = 4;
  int32 optional_int32_63 = 63;
  int32 optional_int32_64 = 64;
  TestAllTypes optional_all_types = 9;
  repeated TestAllTypes repeated_all_types = 10;
}

message TestVerifyUint32Simple {
  uint32 optional_uint32_1 = 1;
  uint32 optional_uint32_2 = 2;
  uint32 optional_uint32_63 = 63;
  uint32 optional_uint32_64 = 64;
}

message TestVerifyUint32 {
  uint32 optional_uint32_1 = 1;
  uint32 optional_uint32_2 = 2;
  uint32 optional_uint32_63 = 63;
  uint32 optional_uint32_64 = 64;
  TestAllTypes optional_all_types = 9;
  repeated TestAllTypes repeated_all_types = 10;
}

message TestVerifyOneUint32 {
  uint32 optional_uint32_1 = 1;
  int32 optional_int32_2 = 2;
  int32 optional_int32_63 = 63;
  int32 optional_int32_64 = 64;
  TestAllTypes optional_all_types = 9;
  repeated TestAllTypes repeated_all_types = 10;
}

message TestVerifyOneInt32BigFieldNumber {
  int32 optional_int32_65 = 65;
  int64 optional_int64_1 = 1;
  int64 optional_int64_2 = 2;
  int64 optional_int64_63 = 63;
  int64 optional_int64_64 = 64;
  TestAllTypes optional_all_types = 9;
  repeated TestAllTypes repeated_all_types = 10;
}

message TestVerifyInt32BigFieldNumber {
  int32 optional_int32_1000 = 1000;
  int32 optional_int32_65 = 65;
  int32 optional_int32_1 = 1;
  int32 optional_int32_2 = 2;
  int32 optional_int32_63 = 63;
  int32 optional_int32_64 = 64;
  TestAllTypes optional_all_types = 9;
  repeated TestAllTypes repeated_all_types = 10;
}

message TestVerifyUint32BigFieldNumber {
  uint32 optional_uint32_1000 = 1000;
  uint32 optional_uint32_65 = 65;
  uint32 optional_uint32_1 = 1;
  uint32 optional_uint32_2 = 2;
  uint32 optional_uint32_63 = 63;
  uint32 optional_uint32_64 = 64;
  TestAllTypes optional_all_types = 9;
  repeated TestAllTypes repeated_all_types = 10;
}

message TestVerifyBigFieldNumberUint32 {
  message Nested {
    uint32 optional_uint32_5000 = 5000;
    uint32 optional_uint32_1000 = 1000;
    uint32 optional_uint32_66 = 66;
    uint32 optional_uint32_65 = 65;
    uint32 optional_uint32_1 = 1;
    uint32 optional_uint32_2 = 2;
    uint32 optional_uint32_63 = 63;
    uint32 optional_uint32_64 = 64;
    Nested optional_nested = 9;
    repeated Nested repeated_nested = 10;
  }

  Nested optional_nested = 1;
}

// This message contains different kind of enums to exercise the different
// parsers in table-driven.
message EnumParseTester {
  enum SeqSmall0 {
    SEQ_SMALL_0_DEFAULT = 0;
    SEQ_SMALL_0_1 = 1;
    SEQ_SMALL_0_2 = 2;
  }

  SeqSmall0 optional_seq_small_0_lowfield = 1;
  SeqSmall0 optional_seq_small_0_midfield = 1001;
  SeqSmall0 optional_seq_small_0_hifield = 1000001;
  repeated SeqSmall0 repeated_seq_small_0_lowfield = 2;
  repeated SeqSmall0 repeated_seq_small_0_midfield = 1002;
  repeated SeqSmall0 repeated_seq_small_0_hifield = 1000002;
  repeated SeqSmall0 packed_seq_small_0_lowfield = 3 [
    features.repeated_field_encoding = PACKED
  ];

  repeated SeqSmall0 packed_seq_small_0_midfield = 1003 [
    features.repeated_field_encoding = PACKED
  ];

  repeated SeqSmall0 packed_seq_small_0_hifield = 1000003 [
    features.repeated_field_encoding = PACKED
  ];

  enum SeqSmall1 {
    SEQ_SMALL_1_DEFAULT = 1;
    SEQ_SMALL_1_2 = 2;
    SEQ_SMALL_1_3 = 3;
  }

  SeqSmall1 optional_seq_small_1_lowfield = 4;
  SeqSmall1 optional_seq_small_1_midfield = 1004;
  SeqSmall1 optional_seq_small_1_hifield = 1000004;
  repeated SeqSmall1 repeated_seq_small_1_lowfield = 5;
  repeated SeqSmall1 repeated_seq_small_1_midfield = 1005;
  repeated SeqSmall1 repeated_seq_small_1_hifield = 1000005;
  repeated SeqSmall1 packed_seq_small_1_lowfield = 6 [
    features.repeated_field_encoding = PACKED
  ];

  repeated SeqSmall1 packed_seq_small_1_midfield = 1006 [
    features.repeated_field_encoding = PACKED
  ];

  repeated SeqSmall1 packed_seq_small_1_hifield = 1000006 [
    features.repeated_field_encoding = PACKED
  ];

  enum SeqLarge {
    SEQ_LARGE_DEFAULT = -1;
    SEQ_LARGE_0 = 0;
    SEQ_LARGE_1 = 1;
    SEQ_LARGE_2 = 2;
    SEQ_LARGE_3 = 3;
    SEQ_LARGE_4 = 4;
    SEQ_LARGE_5 = 5;
    SEQ_LARGE_6 = 6;
    SEQ_LARGE_7 = 7;
    SEQ_LARGE_8 = 8;
    SEQ_LARGE_9 = 9;
    SEQ_LARGE_10 = 10;
    SEQ_LARGE_11 = 11;
    SEQ_LARGE_12 = 12;
    SEQ_LARGE_13 = 13;
    SEQ_LARGE_14 = 14;
    SEQ_LARGE_15 = 15;
    SEQ_LARGE_16 = 16;
    SEQ_LARGE_17 = 17;
    SEQ_LARGE_18 = 18;
    SEQ_LARGE_19 = 19;
    SEQ_LARGE_20 = 20;
    SEQ_LARGE_21 = 21;
    SEQ_LARGE_22 = 22;
    SEQ_LARGE_23 = 23;
    SEQ_LARGE_24 = 24;
    SEQ_LARGE_25 = 25;
    SEQ_LARGE_26 = 26;
    SEQ_LARGE_27 = 27;
    SEQ_LARGE_28 = 28;
    SEQ_LARGE_29 = 29;
    SEQ_LARGE_30 = 30;
    SEQ_LARGE_31 = 31;
    SEQ_LARGE_32 = 32;
    SEQ_LARGE_33 = 33;
  }

  SeqLarge optional_seq_large_lowfield = 7;
  SeqLarge optional_seq_large_midfield = 1007;
  SeqLarge optional_seq_large_hifield = 1000007;
  repeated SeqLarge repeated_seq_large_lowfield = 8;
  repeated SeqLarge repeated_seq_large_midfield = 1008;
  repeated SeqLarge repeated_seq_large_hifield = 1000008;
  repeated SeqLarge packed_seq_large_lowfield = 9 [
    features.repeated_field_encoding = PACKED
  ];

  repeated SeqLarge packed_seq_large_midfield = 1009 [
    features.repeated_field_encoding = PACKED
  ];

  repeated SeqLarge packed_seq_large_hifield = 1000009 [
    features.repeated_field_encoding = PACKED
  ];

  enum Arbitrary {
    ARBITRARY_DEFAULT = -123123;
    ARBITRARY_1 = -123;
    ARBITRARY_2 = 213;
    ARBITRARY_3 = 213213;
    ARBITRARY_MIN = -2147483648;
    ARBITRARY_MAX = 2147483647;
  }

  Arbitrary optional_arbitrary_lowfield = 10;
  Arbitrary optional_arbitrary_midfield = 1010;
  Arbitrary optional_arbitrary_hifield = 1000010;
  repeated Arbitrary repeated_arbitrary_lowfield = 11;
  repeated Arbitrary repeated_arbitrary_midfield = 1011;
  repeated Arbitrary repeated_arbitrary_hifield = 1000011;
  repeated Arbitrary packed_arbitrary_lowfield = 12 [
    features.repeated_field_encoding = PACKED
  ];

  repeated Arbitrary packed_arbitrary_midfield = 1012 [
    features.repeated_field_encoding = PACKED
  ];

  repeated Arbitrary packed_arbitrary_hifield = 1000012 [
    features.repeated_field_encoding = PACKED
  ];

  extensions 2000000 to max;

  extend EnumParseTester {
    Arbitrary optional_arbitrary_ext = 2000000;
    repeated Arbitrary repeated_arbitrary_ext = 2000001;
    repeated Arbitrary packed_arbitrary_ext = 2000002 [
      features.repeated_field_encoding = PACKED
    ];
  }

  // An arbitrary field we can append to to break the runs of repeated fields.
  int32 other_field = 99;
}

// This message contains different kind of bool fields to exercise the different
// parsers in table-drived.
message BoolParseTester {
  bool optional_bool_lowfield = 1;
  bool optional_bool_midfield = 1001;
  bool optional_bool_hifield = 1000001;
  repeated bool repeated_bool_lowfield = 2;
  repeated bool repeated_bool_midfield = 1002;
  repeated bool repeated_bool_hifield = 1000002;
  repeated bool packed_bool_lowfield = 3 [
    features.repeated_field_encoding = PACKED
  ];

  repeated bool packed_bool_midfield = 1003 [
    features.repeated_field_encoding = PACKED
  ];

  repeated bool packed_bool_hifield = 1000003 [
    features.repeated_field_encoding = PACKED
  ];

  extensions 2000000 to max;

  extend BoolParseTester {
    bool optional_bool_ext = 2000000;
    repeated bool repeated_bool_ext = 2000001;
    repeated bool packed_bool_ext = 2000002 [
      features.repeated_field_encoding = PACKED
    ];
  }

  // An arbitrary field we can append to to break the runs of repeated fields.
  int32 other_field = 99;
}

message Int32ParseTester {
  int32 optional_int32_lowfield = 1;
  int32 optional_int32_midfield = 1001;
  int32 optional_int32_hifield = 1000001;
  repeated int32 repeated_int32_lowfield = 2;
  repeated int32 repeated_int32_midfield = 1002;
  repeated int32 repeated_int32_hifield = 1000002;
  repeated int32 packed_int32_lowfield = 3 [
    features.repeated_field_encoding = PACKED
  ];

  repeated int32 packed_int32_midfield = 1003 [
    features.repeated_field_encoding = PACKED
  ];

  repeated int32 packed_int32_hifield = 1000003 [
    features.repeated_field_encoding = PACKED
  ];

  extensions 2000000 to max;

  extend Int32ParseTester {
    int32 optional_int32_ext = 2000000;
    repeated int32 repeated_int32_ext = 2000001;
    repeated int32 packed_int32_ext = 2000002 [
      features.repeated_field_encoding = PACKED
    ];
  }

  // An arbitrary field we can append to to break the runs of repeated fields.
  int32 other_field = 99;
}

message Int64ParseTester {
  int64 optional_int64_lowfield = 1;
  int64 optional_int64_midfield = 1001;
  int64 optional_int64_hifield = 1000001;
  repeated int64 repeated_int64_lowfield = 2;
  repeated int64 repeated_int64_midfield = 1002;
  repeated int64 repeated_int64_hifield = 1000002;
  repeated int64 packed_int64_lowfield = 3 [
    features.repeated_field_encoding = PACKED
  ];

  repeated int64 packed_int64_midfield = 1003 [
    features.repeated_field_encoding = PACKED
  ];

  repeated int64 packed_int64_hifield = 1000003 [
    features.repeated_field_encoding = PACKED
  ];

  extensions 2000000 to max;

  extend Int64ParseTester {
    int64 optional_int64_ext = 2000000;
    repeated int64 repeated_int64_ext = 2000001;
    repeated int64 packed_int64_ext = 2000002 [
      features.repeated_field_encoding = PACKED
    ];
  }

  // An arbitrary field we can append to to break the runs of repeated fields.
  int32 other_field = 99;
}

message InlinedStringIdxRegressionProto {
  // We mix data to make sure aux ids and inlined string idx do not match.
  // aux_idx == inlined_string_idx == 1
  string str1 = 1;

  // aux_idx == 2
  InlinedStringIdxRegressionProto sub = 2;

  // aux_idx == 3, inlined_string_idx == 2
  string str2 = 3;

  // aux_idx == 4, inlined_string_idx == 3
  bytes str3 = 4;
}

message StringParseTester {
  string optional_string_lowfield = 1;
  string optional_string_midfield = 1001;
  string optional_string_hifield = 1000001;
  repeated string repeated_string_lowfield = 2;
  repeated string repeated_string_midfield = 1002;
  repeated string repeated_string_hifield = 1000002;

  extensions 2000000 to max;

  extend StringParseTester {
    string optional_string_ext = 2000000;
    repeated string repeated_string_ext = 2000001;
  }
}

message BadFieldNames {
  int32 OptionalInt32 = 1;
  int32 for = 2;
}

message TestNestedMessageRedaction {
  string optional_unredacted_nested_string = 1;
  string optional_redacted_nested_string = 2 [
    debug_redact = true
  ];
}

message RedactedFields {
  string optional_redacted_string = 1 [
    debug_redact = true
  ];

  string optional_unredacted_string = 2;
  repeated string repeated_redacted_string = 3 [
    debug_redact = true
  ];

  repeated string repeated_unredacted_string = 4;
  TestNestedMessageRedaction optional_redacted_message = 5 [
    debug_redact = true
  ];

  TestNestedMessageRedaction optional_unredacted_message = 6;
  repeated TestNestedMessageRedaction repeated_redacted_message = 7 [
    debug_redact = true
  ];

  repeated TestNestedMessageRedaction repeated_unredacted_message = 8;
  map<string, string> map_redacted_string = 9 [
    debug_redact = true
  ];

  map<string, string> map_unredacted_string = 10;
  string optional_redacted_false_string = 11 [
    debug_redact = false
  ];

  extensions 20 to 30;
}

extend RedactedFields {
  string redacted_extension = 20 [
    debug_redact = true
  ];
}

message TestCord {
  bytes optional_bytes_cord = 1 [
    ctype = CORD
  ];

  bytes optional_bytes_cord_default = 2 [
    ctype = CORD,
    default = "hello"
  ];
}

message TestPackedEnumSmallRange {
  enum NestedEnum {
    UNSPECIFIED = 0;
    FOO = 1;
    BAR = 2;
    BAZ = 3;
  }

  repeated NestedEnum vals = 1 [
    features.repeated_field_encoding = PACKED
  ];
}

message EnumsForBenchmark {
  enum Flat {
    A0 = 0;
    A1 = 1;
    A2 = 2;
    A3 = 3;
    A4 = 4;
    A5 = 5;
    A6 = 6;
    A7 = 7;
    A8 = 8;
    A9 = 9;
    A10 = 10;
    A11 = 11;
    A12 = 12;
    A13 = 13;
    A14 = 14;
    A15 = 15;
  }

  // Has a few holes, bitmap can be used.
  enum AlmostFlat {
    B0 = 0;
    B1 = 1;
    B2 = 2;
    B3 = 3;
    B5 = 5;
    B6 = 6;
    B7 = 7;
    B8 = 8;
    B9 = 9;
    B11 = 11;
    B12 = 12;
    B13 = 13;
    B14 = 14;
    B15 = 15;
    B17 = 17;
    B19 = 19;
  }

  enum Sparse {
    C536 = 536;
    C8387 = 8387;
    C9673 = 9673;
    C10285 = 10285;
    C13318 = 13318;
    C15963 = 15963;
    C16439 = 16439;
    C18197 = 18197;
    C19430 = 19430;
    C20361 = 20361;
    C20706 = 20706;
    C21050 = 21050;
    C21906 = 21906;
    C27265 = 27265;
    C30109 = 30109;
    C31670 = 31670;
  }
}

message TestMessageWithManyRepeatedPtrFields {
  repeated string repeated_string_1 = 1;
  repeated string repeated_string_2 = 2;
  repeated string repeated_string_3 = 3;
  repeated string repeated_string_4 = 4;
  repeated string repeated_string_5 = 5;
  repeated string repeated_string_6 = 6;
  repeated string repeated_string_7 = 7;
  repeated string repeated_string_8 = 8;
  repeated string repeated_string_9 = 9;
  repeated string repeated_string_10 = 10;
  repeated string repeated_string_11 = 11;
  repeated string repeated_string_12 = 12;
  repeated string repeated_string_13 = 13;
  repeated string repeated_string_14 = 14;
  repeated string repeated_string_15 = 15;
  repeated string repeated_string_16 = 16;
  repeated string repeated_string_17 = 17;
  repeated string repeated_string_18 = 18;
  repeated string repeated_string_19 = 19;
  repeated string repeated_string_20 = 20;
  repeated string repeated_string_21 = 21;
  repeated string repeated_string_22 = 22;
  repeated string repeated_string_23 = 23;
  repeated string repeated_string_24 = 24;
  repeated string repeated_string_25 = 25;
  repeated string repeated_string_26 = 26;
  repeated string repeated_string_27 = 27;
  repeated string repeated_string_28 = 28;
  repeated string repeated_string_29 = 29;
  repeated string repeated_string_30 = 30;
  repeated string repeated_string_31 = 31;
  repeated string repeated_string_32 = 32;
}

message MessageCreatorZeroInit {
  int32 i = 1;
  double d = 2;
  MessageCreatorZeroInit m = 3;

  oneof one {
    string os = 10;
    string oc = 11 [
      ctype = CORD
    ];

    fixed64 of = 12;
    MessageCreatorZeroInit ol = 13 [
      lazy = true
    ];
  }
}

message MessageCreatorMemcpy {
  string s = 1;
  repeated int32 i = 2 [
    features.repeated_field_encoding = PACKED
  ];

  MessageCreatorMemcpy m = 3 [
    lazy = true
  ];

  map<int32, int32> m2 = 4;
}

message MessageCreatorFunc {
  // This one is ArenaDtorNeeds::kRequired so we must run the constructor.
  string c = 3 [
    ctype = CORD
  ];
}