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Lightweight Higher-Order Rewriting in Haskell

Emil Axelsson (Institutionen för data- och informationsteknik, Programvaruteknik (Chalmers)) ; Andrea Vezzosi (Institutionen för data- och informationsteknik, Datavetenskap (Chalmers))
Trends in Functional Programming (2015)
[Konferensbidrag, övrigt]

We present a generic Haskell library for expressing rewrite rules with a safe treatment of variables and binders. Both sides of the rules are written as typed EDSL expressions, which leads to syntactically appealing rules and hides the underlying term representation. Matching is defined as an instance of Miller's pattern unification, which makes for efficient execution when rules are applied in a bottom-up fashion. The restrictions of pattern unification are captured in the types of the library, and we show by example that the library is capable of expressing useful simplifications that might be used in a compiler.

Nyckelord: higher-order rewriting, pattern unification, EDSL


This entry is for the presentation at TFP. There is another entry for the post-symposium version of the paper.



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Denna post skapades 2015-11-17. Senast ändrad 2015-11-17.
CPL Pubid: 225833