EuLisp
 |
|
| Paradigm | multi-paradigm: functional, procedural, meta, object-oriented |
|---|---|
| Family | Lisp |
| First appeared | 1990 |
| Preview release |
0.991 / 2010
|
| Typing discipline | strong, dynamic |
| OS | Linux |
| Filename extensions | .em |
| Major implementations | |
| EuXLisp [1], Youtoo [2], Eu2C [3] | |
| Influenced by | |
| Common Lisp, InterLisp, LeLisp, Lisp/VM, Scheme, T, CLOS, ObjVlisp, Oaklisp, MicroCeyx, MCS, Standard ML, Haskell | |
| Influenced | |
| Dylan, ISLISP, Evelin | |
EuLisp is a statically and dynamically scoped Lisp dialect developed by a loose formation of industrial and academic Lisp users and developers from around Europe. The standardizers intended to create a new Lisp "less encumbered by the past" (compared to Common Lisp), and not so minimalistic as Scheme. Another objective was to integrate the Object-oriented programming paradigm well.
Language definition process first began in a meeting in 1985 in Paris and took a long time. The complete specification and a first implementation (interpreted-only) was available in 1990.
Its primary characteristics are that it is a Lisp-1 (no separate function and variable namespaces), has a CLOS-style (Common Lisp Object System) generic-function type object-oriented system named TELOS (The EuLisp Object System) integrated from the ground up, has a built-in module system, and is defined in layers to promote the use of the Lisp on small, embedded hardware and educational machines. It supports continuations, though not as powerfully as Scheme. It has a simple lightweight process mechanism (threads).
An early implementation of EuLisp was FEEL (Free and Eventually Eulisp). The successor to FEEL was Youtoo (interpreted and compiled versions), by University of Bath in the United Kingdom. An interpreter for the basic level of EuLisp, "level-0", was written by Russell Bradford in XScheme, an implementation of Scheme by David Michael Betz, originally called EuScheme but the most recent version is renamed EuXLisp [4] to avoid confusion. Also Eu2C [5], a EuLisp optimizing compiler, was created by Fraunhofer ISST under the APPLY project in Germany [6].
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