mojo/public/tools/bindings/generators/dart_templates/enum_definition.tmpl

{%- macro enum_def(enum) -%}
class {{enum|name}} extends bindings.MojoEnum {
{%- for field in enum.fields %}
  static const {{field.name}} = const {{enum|name}}._({{field.resolved_value}});
{%- endfor %}

  const {{enum|name}}._(int v) : super(v);

  static const Map<String, {{enum|name}}> valuesMap = const {
{%- for field in enum.fields %}
    "{{field.name}}": {{field.name}},
{%- endfor %}
  };
  static const List<{{enum|name}}> values = const [
{%- for field in enum.fields %}
    {{field.name}},
{%- endfor %}
  ];

  static {{enum|name}} valueOf(String name) => valuesMap[name];

  factory {{enum|name}}(int v) {
    switch (v) {
{%- for field in enum.fields %}
      case {{field.resolved_value}}:
        return {{field.name}};
{%- endfor %}
      default:
        return null;
    }
  }

  static {{enum|name}} decode(bindings.Decoder decoder0, int offset) {
    int v = decoder0.decodeUint32(offset);
    {{enum|name}} result = new {{enum|name}}(v);
    if (result == null) {
      throw new bindings.MojoCodecError(
          'Bad value $v for enum {{enum|name}}.');
    }
    return result;
  }

  String toString() {
    switch(this) {
{%- for field in enum.fields %}
      case {{field.name}}:
        return '{{enum|name}}.{{field.name}}';
{%- endfor %}
    }
  }

  int toJson() => value;
}
{%- endmacro %}