Typestate: A programming language concept for enhancing software reliability
IEEE Transactions on Software Engineering
A semantics of multiple inheritance
Information and Computation - Semantics of Data Types
Toward a typed foundation for method specialization and inheritance
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A syntactic approach to type soundness
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Dependent types in practical programming
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Type inference with constrained types
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Type-based race detection for Java
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Enforcing high-level protocols in low-level software
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ACM Transactions on Software Engineering and Methodology (TOSEM)
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Flow-sensitive type qualifiers
PLDI '02 Proceedings of the ACM SIGPLAN 2002 Conference on Programming language design and implementation
Ownership types for object encapsulation
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Extending Typestate Checking Using Conditional Liveness Analysis
IEEE Transactions on Software Engineering
A Programmer's Reduction Semantics for Classes and Mixins
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A type and effect system for atomicity
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An effective theory of type refinements
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Connecting effects and uniqueness with adoption
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A framework for implementing pluggable type systems
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Checking interference with fractional permissions
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Type-Based amortised heap-space analysis
ESOP'06 Proceedings of the 15th European conference on Programming Languages and Systems
Modular typestate checking of aliased objects
Proceedings of the 22nd annual ACM SIGPLAN conference on Object-oriented programming systems and applications
Effective typestate verification in the presence of aliasing
ACM Transactions on Software Engineering and Methodology (TOSEM)
Practical API Protocol Checking with Access Permissions
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Efficient type-checking for amortised heap-space analysis
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Java(X) is a framework for type refinement. It extends Java's type language with annotations drawn from an algebra X and structural subtyping in terms of the annotations. Each instantiation of X yields a different refinement type system with guaranteed soundness. The paper presents some applications, formalizes a core language, states a generic type soundness result, and sketches the extensions required for the full Java language (without generics). The main technical innovation of Java(X) is its concept of activity annotations paired with the notion of droppability. An activity annotation is a capability which can grant exclusive write permission for a field in an object and thus facilitates a typestate change (strong update). Propagation of capabilities is either linear or affine (if they are droppable). Thus, Java(X) can perform protocol checking as well as refinement typing. Aliasing is addressed with a novel splitting relation on types.