Abstract
Hofmann’s LFPL is a functional language with constructs which can be interpreted as referring to heap locations. In this view, the language is suitable for expressing and verifying in-place update algorithms. Correctness of this semantics is achieved by a linear typing. We introduce a non-linear typing of first-order LFPL programs which is more permissive than the recent effect-based typing of Aspinall and Hofmann. The system efficiently infers separation assertions as well as destruction and re-use effects for individual layers of recursive-type values. Thus it is suitable for in-place update algorithms with complicated data aliasing.
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Konečný, M. (2003). Functional In-Place Update with Layered Datatype Sharing. In: Hofmann, M. (eds) Typed Lambda Calculi and Applications. TLCA 2003. Lecture Notes in Computer Science, vol 2701. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44904-3_14
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DOI: https://doi.org/10.1007/3-540-44904-3_14
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