test/protos/dart_options.proto

// Experimental options controlling Dart code generation.
syntax = "proto2";

package dart_options;

// This file must be modified for google internal use,
// because custom options only work when the package name
// agrees with the version of protoc we are using.
// (The import statement and "google.protobuf." prefix need to be changed.)

import "descriptor_2_5_opensource.proto";

// A mixin to be applied in the 'with' clause of a generated proto in dart.
message DartMixin {
  // Class name of the mixin class.
  optional string name = 1;

  // File from which the mixin class is imported.
  // The generated Dart code will use this in an import statement.
  optional string import_from = 2;

  // Used to apply multiple mixins to a proto.
  // The mixin listed in parent will always be applied before this one,
  // making the generated proto implement both mixins.
  optional string parent = 3;
}

// Defines mixins imported from dart files to be used on messages in this file.
message ImportedMixins {

  // The DartMixins to be imported.
  repeated DartMixin mixins = 1;
}

extend google.protobuf.FileOptions {

  // Defines the named mixins to be used on messages in this file.
  // These mixins are in addition to internally defined mixins (e.g PbMapMixin)
  // and may override them.
  // Warning: there is no checking at compile time for name conflicts between
  // identifiers defined in the mixin and proto-generated identifiers.
  // Running dartanalyzer on the generated file might find some of them.
  optional ImportedMixins imported_mixins = 28125061;

  // Applies the named mixin to all messages in this file.
  // (May be overridden by the "mixin" option on a message.)
  // For now, "PbMapMixin" is the only available mixin.
  optional string default_mixin = 96128839;
}

extend google.protobuf.MessageOptions {

  // Applies the named mixin.
  // For now, "PbMapMixin" is the only available mixin.
  // The empty string can be used to turn off mixins for this message.
  optional string mixin = 96128839;
}

extend google.protobuf.FieldOptions {

  // Uses the given name for getters, setters and as suffixes for has/clear
  // methods in the generated Dart file. Should be lowerCamelCase.
  optional string dart_name = 28700919;
}