compdata: Compositional Data Types

[ bsd3, generics, library ] [ Propose Tags ]

Based on Wouter Swierstra's Functional Pearl Data types a la carte (Journal of Functional Programming, 18(4):423-436, 2008, http://dx.doi.org/10.1017/S0956796808006758), this package provides a framework for defining recursive data types in a compositional manner. The fundamental idea of compositional data types (Workshop on Generic Programming, 83-94, 2011, http://dx.doi.org/10.1145/2036918.2036930) is to separate the signature of a data type from the fixed point construction that produces its recursive structure. By allowing to compose and decompose signatures, compositional data types enable to combine data types in a flexible way. The key point of Wouter Swierstra's original work is to define functions on compositional data types in a compositional manner as well by leveraging Haskell's type class machinery.

Building on that foundation, this library provides additional extensions and (run-time) optimisations which make compositional data types usable for practical implementations. In particular, it provides an excellent framework for manipulating and analysing abstract syntax trees in a type-safe manner. Thus, it is perfectly suited for programming language implementations, especially, in an environment consisting of a family of tightly interwoven domain-specific languages.

In concrete terms, this package provides the following features:

Examples of using (generalised) (parametric) compositional data types are bundled with the package in the libray examples.

Versions [faq] 0.1, 0.2, 0.3, 0.4, 0.4.1, 0.5, 0.5.1, 0.5.2, 0.5.3, 0.6, 0.6.1, 0.6.1.1, 0.6.1.2, 0.6.1.3, 0.6.1.4, 0.7, 0.7.0.1, 0.7.0.2, 0.8, 0.8.0.1, 0.8.1.0, 0.8.1.1, 0.8.1.2, 0.8.1.3, 0.9, 0.10, 0.10.1, 0.11, 0.12
Dependencies base (==4.*), containers, deepseq, derive, mtl, QuickCheck (>=2), template-haskell, th-expand-syns, transformers [details]
License BSD-3-Clause
Author Patrick Bahr, Tom Hvitved
Maintainer paba@diku.dk
Category Generics
Source repo head: hg clone https://bitbucket.org/paba/compdata
Uploaded by PatrickBahr at Thu Feb 28 09:49:40 UTC 2013
Distributions NixOS:0.12
Downloads 13702 total (545 in the last 30 days)
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