Generic Universe Types

  • Werner Dietl
  • Sophia Drossopoulou
  • Peter Müller
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4609)


Ownership is a powerful concept to structure the object store and to control aliasing and modifications of objects. This paper presents an ownership type system for a Java-like programming language with generic types. Like our earlier Universe type system, Generic Universe Types enforce the owner-as-modifier discipline. This discipline does not restrict aliasing, but requires modifications of an object to be initiated by its owner. This allows owner objects to control state changes of owned objects, for instance, to maintain invariants. Generic Universe Types require a small annotation overhead and provide strong static guarantees. They are the first type system that combines the owner-as-modifier discipline with type genericity.


Type Variable Operational Semantic Type Rule Type Environment Type Argument 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Aldrich, J., Chambers, C.: Ownership domains: Separating aliasing policy from mechanism. In: Odersky, M. (ed.) ECOOP 2004. LNCS, vol. 3086, pp. 1–25. Springer, Heidelberg (2004)Google Scholar
  2. 2.
    Andrea, C., Coady, Y., Gibbs, C., Noble, J., Vitek, J., Zhao, T.: Scoped types and aspects for real-time systems. In: Thomas, D. (ed.) ECOOP 2006. LNCS, vol. 4067, pp. 124–147. Springer, Heidelberg (2006)CrossRefGoogle Scholar
  3. 3.
    Banerjee, A., Naumann, D.: Representation independence, confinement, and access control. In: Principles of Programming Languages (POPL), pp. 166–177. ACM Press, New York (2002)Google Scholar
  4. 4.
    Boyapati, C.: SafeJava: A Unified Type System for Safe Programming. PhD thesis, MIT (2004)Google Scholar
  5. 5.
    Boyapati, C., Lee, R., Rinard, M.: Ownership types for safe programming: Preventing data races and deadlocks. In: Object-Oriented Programming, Systems, Languages, and Applications (OOPSLA), pp. 211–230. ACM Press, New York (2002)Google Scholar
  6. 6.
    Boyapati, C., Salcianu Jr., A., Beebee, W., Rinard, M.: Ownership types for safe region-based memory management in real-time Java. In: Programming language design and implementation (PLDI), pp. 324–337. ACM Press, New York (2003)Google Scholar
  7. 7.
    Clarke, D.: Object Ownership and Containment. PhD thesis, University of New South Wales (2001)Google Scholar
  8. 8.
    Clarke, D., Drossopoulou, S.: Ownership, encapsulation and the disjointness of type and effect. In: Object-Oriented Programming, Systems, Languages, and Applications (OOPSLA), pp. 292–310. ACM Press, New York (2002)Google Scholar
  9. 9.
    Clarke, D.G., Potter, J.M., Noble, J.: Ownership types for flexible alias protection ACM SIGPLAN Notices. In: Object-Oriented Programming Systems, Languages, and Applications (OOPSLA), vol. 33(10) (1998)Google Scholar
  10. 10.
    Dietl, W., Drossopoulou, S., Müller, P.: Formalization of Generic Universe Types. Technical Report 532, ETH Zurich (2006),
  11. 11.
    Dietl, W., Müller, P.: Exceptions in ownership type systems. In: Poll, E. (ed.) Formal Techniques for Java-like Programs, pp. 49–54 (2004)Google Scholar
  12. 12.
    Dietl, W., Müller, P.: Universes: Lightweight ownership for JML. Journal of Object Technology (JOT) 4(8) (2005)Google Scholar
  13. 13.
    Emir, B., Kennedy, A.J., Russo, C., Yu, D.: Variance and generalized constraints for C# generics. In: Thomas, D. (ed.) ECOOP 2006. LNCS, vol. 4067, pp. 279–303. Springer, Heidelberg (2006)CrossRefGoogle Scholar
  14. 14.
    Igarashi, A., Pierce, B.C., Wadler, P.: Featherweight Java: a minimal core calculus for Java and GJ. ACM Transactions on Programming Languages and Systems (TOPLAS) 23(3), 396–450 (2001)CrossRefGoogle Scholar
  15. 15.
    Jacobs, B., Piessens, F., Leino, K.R.M., Schulte, W.: Safe concurrency for aggregate objects with invariants. In: Software Engineering and Formal Methods (SEFM), pp. 137–147. IEEE Computer Society Press, Los Alamitos (2005)CrossRefGoogle Scholar
  16. 16.
    Kennedy, A., Syme, D.: Design and Implementation of Generics for the.NET Common Language Runtime. In: Programming Language Design and Implementation (PLDI), pp. 1–12 (2001)Google Scholar
  17. 17.
    Leavens, G.T., Poll, E., Clifton, C., Cheon, Y., Ruby, C., Cok, D., Müller, P., Kiniry, J.: JML reference manual. Department of Computer Science, Iowa State University (2006), Available from
  18. 18.
    Leino, K.R.M., Müller, P.: Object invariants in dynamic contexts. In: Odersky, M. (ed.) ECOOP 2004. LNCS, vol. 3086, pp. 491–516. Springer, Heidelberg (2004)Google Scholar
  19. 19.
    Lu, Y., Potter, J.: Protecting representation with effect encapsulation. In: Principles of programming languages (POPL), pp. 359–371. ACM Press, New York (2006)Google Scholar
  20. 20.
    Müller, P.: Modular Specification and Verification of Object-Oriented Programs. LNCS, vol. 2262. Springer, Heidelberg (2002)zbMATHGoogle Scholar
  21. 21.
    Müller, P., Poetzsch-Heffter, A., Leavens, G.T.: Modular invariants for layered object structures. Science of Computer Programming 62, 253–286 (2006)zbMATHCrossRefMathSciNetGoogle Scholar
  22. 22.
    Nägeli, S.: Ownership in design patterns. Master’s thesis, ETH Zurich (2006),
  23. 23.
    Noble, J., Vitek, J., Potter, J.M.: Flexible alias protection. In: Jul, E. (ed.) ECOOP 1998. LNCS, vol. 1445, Springer, Heidelberg (1998)CrossRefGoogle Scholar
  24. 24.
    Potanin, A., Noble, J., Clarke, D., Biddle, R.: Generic ownership for generic Java. In: Object-Oriented Programming Systems, Languages, and Applications (OOPSLA), October 2006, pp. 311–324. ACM Press, New York (2006)Google Scholar
  25. 25.
    Salcianu, A., Rinard, M.C.: Purity and side effect analysis for Java programs. In: Cousot, R. (ed.) VMCAI 2005. LNCS, vol. 3385, pp. 199–215. Springer, Heidelberg (2005)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Werner Dietl
    • 1
  • Sophia Drossopoulou
    • 2
  • Peter Müller
    • 1
  1. 1.ETH Zurich 
  2. 2.Imperial College London 

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