Behavioural Subtyping for a Type-Theoretic Model of Objects

Poll, Erik (1998) Behavioural Subtyping for a Type-Theoretic Model of Objects. In: FOOL5: Fifth International Workshop on Foundations of Object-Oriented Languages. (Full text available)

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Abstract

We present a refinement of the existential object model of Pierce and Turner. In addition to signatures (or interfaces) as the types of objects, we also provide classes as the types of objects. These class types not only specify an interface, but also a particular implementation. We show that class types can be interpreted in the standard PER model. Our main result is that the standard interpretation of subtyping in PER models - i.e. subtypes are subpers - is then exactly the notion of behavioural subtyping as it is defined by Leavens.

Item Type: Conference or workshop item (Paper)
Uncontrolled keywords: behavioural subtyping
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,
Divisions: Faculties > Science Technology and Medical Studies > School of Computing > Theoretical Computing Group
Depositing User: Mark Wheadon
Date Deposited: 29 Aug 2009 10:51
Last Modified: 06 Sep 2011 04:02
Resource URI: http://kar.kent.ac.uk/id/eprint/21687 (The current URI for this page, for reference purposes)
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