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Applications and libraries/Compilers and interpreters

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Haskell, with its support for pattern matching on data structures, generic structure traversals, and expressive type system, is popular for implementing compilers and interpreters. Here's a selection of compilers and interpreters implemented in Haskell.


1 Large languages

1.1 Haskell

GHC, The Glasgow Haskell Compiler, is written in Haskell
Yhc, The York Haskell Compiler, is written in Haskell
Jhc is a Haskell compiler which aims to produce the most efficient programs possible via whole program analysis
A compiler for Haskell 98, written in Haskell
The purpose of the EHC project is to provide a description of a Haskell compiler which is as understandable as possible so it can be used for education as well as research.
A parallel version of Haskell from MIT.

1.1.1 Helium

A Haskell subset for educational purposes

1.1.2 Generic Haskell

Generic Haskell
An extension of Haskell that supports generic programming

1.1.3 Data Field Haskell

Data Field Haskell
A dialect of the functional programming language Haskell that provides an instance of data fields

1.1.4 Eden

A Haskell dialect for parallel programming

1.1.5 Chameleon

A Haskell-style language which implements the ideas described in a ``A Theory of Overloading``

1.1.6 CHR (Constraint Handling Rules)

A concurrent committed-choice constraint logic programming language, implemented using GHC's software transactional memory. According to the above-mentioned site, "It also contains an implementation of WAM for Haskell, so Prolog-style terms with variables are now possible."

1.2 Liskell

Liskell is Haskell on the inside but looks like Lisp on the outside

1.3 Perl

Pugs is an implementation of Perl 6, written in Haskell. It aims to implement the full Perl6 specification.

1.4 Python

Haspy is an implementation of Python in Haskell

1.5 Ruby

RType is a Ruby interpreter written in Haskell

1.6 Flapjax

Flapjax is a language for functional reactive programming of AJAX web applications, whose compiler (source) is written in Haskell.

1.7 Scheme

Write Yourself a Scheme in 48 Hours
A small Scheme interpreter
A Scheme in Haskell

1.8 Lisp

A Lisp Interpreter In Haskell
A small lisp interpreter written in Haskell

1.9 Emacs Lisp

The beginnings of an Emacs lisp compiler/interpreter.

1.10 Epigram

Epigram is a prototype dependently typed functional programming language

1.11 Curry

The Münster Curry Compiler
A native code compiler for the declarative multi-paradigm language Curry, written in Haskell

1.12 Bluespec

A compiler for a hardware description language translating a Haskell-like (but with System Verilog syntax these days) language to Verilog.

1.13 Cayenne

A compiler for a Haskell-like language with dependent types.

1.14 Agda

A Cayenne-like programming language and proof assistant.

1.15 PolyP

A polytypic programming language

1.16 Forth

Harrorth, a Forth interpreter

1.17 Eiffel

Dynamic binding in Eiffel
A model of dynamic binding in ECMA Eiffel, in Haskell

1.18 Crouton

Crouton is a small but fairly complete functional programming language for querying and transforming parsed manuscripts, such as the PPCME. It is intended as an alternative to Corpus Search, based on a different philosophy. It is written in (and largely based on) the very nice functional programming language Haskell using the Parsec library

1.19 JavaScript

HJS is a JavaScript parser written in Haskell. Available from HackageDB.

1.20 TCL

Hiccup is a minimalistic TCL interpreter. It tries to be relatively simple, relatively efficient, and mostly correct.

1.21 Smalltalk

HST is a Smalltalk implementation in Haskell. See here for more information

1.22 Disciple

Disciple is an explicitly lazy dialect of Haskell which supports destructive update, computational effects, type directed field projections and some other useful things.

2 Small languages

2.1 Baskell

An interpreter for a small functional programming language. Supports strict and non-strict evaluation, and type inference. Useful for teaching purposes.

2.2 LambdaPi

LambdaPi, An Implementation of a Dependently Typed Lambda Calculus

2.3 Unlambda

An implementation of Unlambda in Haskell

2.4 BF

An implementation of BF in Haskell

2.5 Lambda calculus

4 lambda calculus implementations
With code, by Lennart Augustsson.
An implementation of the untyped lambda calculus

2.6 QML, a functional quantum programming language

QML: A Functional Quantum Programming Language project
It is implemented in Haskell.
For online material on quantum computing in general, see Quantum Computation course held by John Preskill.

2.7 HQL - HHM's Quantified Lambda

Hernan's Quantified Lambda
a small functional language, whose expressions can involve the use of quantifier operators

2.8 Atom

Atom is a small HDL that compiles conditional term rewriting systems down to Verilog RTL.

2.9 AL (Assignment Language)

It is used for teaching purposes in at the Technical University of Vienna.
An interpreter implemented in Haskell is described in ALI - an AL Interpreter implemented in Haskell written by Peter Robinson.

2.10 Whitespace

A language that uses whitespace characters as language elements and ignores all non-whitespace characters

2.11 LIPL

An interpreter for a tiny functional programming language. It features Hindley-Milner style type inference.

3 Debuggers

A declarative debugger for OBJ-like languages
See also Debugging.

This page contains a list of libraries and tools in a certain category. For a comprehensive list of such pages, see Applications and libraries.