mojo/public/bindings/generators/cpp_templates/wrapper_class_declaration

class $CLASS {
 public:
  typedef internal::${CLASS}_Data Data;

  $CLASS() : data_(NULL) {
  }

  template <typename U>
  $CLASS(const U& u, mojo::Buffer* buf = mojo::Buffer::current()) {
    *this = mojo::TypeConverter<$CLASS,U>::ConvertFrom(u, buf);
  }

  template <typename U>
  $CLASS& operator=(const U& u) {
    *this =
        mojo::TypeConverter<$CLASS,U>::ConvertFrom(u, mojo::Buffer::current());
    return *this;
  }

  template <typename U>
  operator U() const {
    return To<U>();
  }

  template <typename U>
  U To() const {
    return mojo::TypeConverter<$CLASS,U>::ConvertTo(*this);
  }

  bool is_null() const { return !data_; }

$GETTERS

  class Builder {
   public:
    explicit Builder(mojo::Buffer* buf = mojo::Buffer::current());

$SETTERS

    $CLASS Finish();

   private:
    $CLASS::Data* data_;
    MOJO_DISALLOW_COPY_AND_ASSIGN(Builder);
  };

 private:
  friend class mojo::internal::WrapperHelper<$CLASS>;

  struct Wrap {};
  $CLASS(Wrap, const Data* data) : data_(data) {}

  const Data* data_;
};