class Type {
  final String name;
  final List<TypeGeneric> generics;

  const Type(this.name, [this.generics = const []]);

  TypeGeneric get generic => new TypeGeneric(type: this);

  String toString() => name + (generics.isNotEmpty ? '<' + generics.join(',') + '>' : '');

  static const Void = const Type('void');
  static const Boolean = const Type('boolean');
  static const Byte = const Type('byte');
  static const Short = const Type('short');
  static const Int = const Type('int');
  static const Long = const Type('long');
  static const Float = const Type('float');
  static const Double = const Type('double');
  static const Object = const Type('java.lang.Object');
  static const Wildcard = const Type('?');
}

class TypeGeneric {
  final Type type;

  TypeGeneric({this.type});

  String toString() => type.toString();
}

class BoundedTypeGeneric extends TypeGeneric {
  final bool isLowerBound;
  final Type bound;

  BoundedTypeGeneric({this.isLowerBound: false, this.bound}) : super(type: Type.Wildcard);

  String toString() => type.toString() + ' ' + (isLowerBound ? 'super' : 'extends') + ' ' + bound.toString();
}

class ClassGeneric {
  final String name;
  final List<Type> bounds;

  ClassGeneric({this.name, this.bounds: const []});

  String toString() => name + (bounds.isNotEmpty ? " extends " + bounds.join() : "");
}