husk-scheme: R5RS Scheme interpreter, compiler, and library.
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A dialect of R5RS Scheme written in Haskell. Advanced features are provided including:
First-class continuations of unlimited extent
Hygienic macros based on syntax-rules
Low-level explicit renaming macros
A foreign function interface (FFI) to Haskell
Full numeric tower providing support for real, rational, and complex numbers
Proper tail recursion and lexical scoping
Read-Eval-Print-Loop (REPL) interpreter, with input driven by Haskeline to provide a rich user experience
Standard library of Scheme functions, and support for many popular SRFI's
Husk may be used as either a stand-alone interpreter or as an extension language within a larger Haskell application. By closely following the R5RS standard, the intent is to develop a Scheme that is as compatible as possible with other R5RS Schemes. Husk is mature enough for use in production, however it is not optimized for performance-critical applications.
Scheme is one of two main dialects of Lisp. Scheme follows a minimalist design philosophy: the core language consists of a small number of fundamental forms which may be used to implement other built-in forms. Scheme is an excellent language for writing small, elegant programs, and may also be used to write scripts or embed scripting functionality within a larger application.
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Properties
| Versions | 1.0, 1.1, 1.2, 1.3, 2.0, 2.1, 2.2, 2.3, 2.4, 3.0, 3.1, 3.2, 3.2.1, 3.3, 3.4, 3.4.1, 3.4.2, 3.4.3, 3.4.4, 3.5.1, 3.5.2, 3.5.2.1, 3.5.2.2, 3.5.2.3, 3.5.3, 3.5.3.1, 3.5.3.2, 3.5.4, 3.5.5, 3.5.6, 3.5.7, 3.6, 3.6.1, 3.6.2, 3.6.3, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14, 3.14, 3.15, 3.15.1, 3.15.2, 3.16, 3.16.1, 3.17, 3.17.1, 3.18, 3.19, 3.19.1, 3.19.2, 3.19.3, 3.20 |
|---|---|
| Change log | ChangeLog.markdown |
| Dependencies | array, base (>=2.0 && <5), bytestring, containers, directory, filepath, ghc, ghc-paths, haskeline, husk-scheme, mtl, parsec, process, time, transformers, utf8-string [details] |
| License | MIT |
| Author | Justin Ethier |
| Maintainer | Justin Ethier <github.com/justinethier> |
| Category | Compilers/Interpreters, Language |
| Home page | http://justinethier.github.com/husk-scheme |
| Bug tracker | http://github.com/justinethier/husk-scheme/issues |
| Source repo | head: git clone git://github.com/justinethier/husk-scheme.git |
| Uploaded | by JustinEthier at 2013-11-14T02:30:38Z |
Modules
[Index]
Flags
Automatic Flags
| Name | Description | Default |
|---|---|---|
| useffi | Haskell Foreign Function Interface (FFI). Allows husk to import and call into Haskell code directly from Scheme code. Turn off FFI to decrease build times and minimize executable sizes | Disabled |
| uselibraries | R7RS-style libraries. | Enabled |
| useptrs | Turn off pointers to increase performance at the expense of severely restricting the functionality of mutable variables. Setting this flag to false will revert back to the behavior from previous versions of husk. | Enabled |
Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info
Downloads
- husk-scheme-3.14.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
Package maintainers
For package maintainers and hackage trustees
Readme for husk-scheme-3.14
[back to package description]
husk is a dialect of Scheme written in Haskell that implements a superset of the R5RS standard. Advanced R5RS features are provided including continuations, hygienic macros, and a full numeric tower.
husk may be used as either a stand-alone interpreter or as an extension language within a larger Haskell application. By closely following the R5RS standard, the intent is to develop a Scheme that is as compatible as possible with other R5RS Schemes. husk is mature enough for use in production applications, however it is not optimized for performance-critical applications.
Scheme is one of two main dialects of Lisp. Scheme follows a minimalist design philosophy: the core language consists of a small number of fundamental forms which may be used to implement other built-in forms. Scheme is an excellent language for writing small, elegant programs, and may also be used to write scripts or embed scripting functionality within a larger application.
Installation
The Glasgow Haskell Compiler (GHC) is required to build, install, and run husk. All recent versions of GHC are supported, including 7.0, 7.2, 7.4, and 7.6. The easiest way to get GHC is via the Haskell Platform.
husk may be installed using cabal:
cabal update
cabal install husk-scheme
Before running husk you may also need to add the cabal executable directory to your path. On Linux this is ~/.cabal/bin. Now you are ready to start up the interpreter:
justin@my-pc$ huski
_ _ __ _
| | | | \\\ | |
| |__ _ _ ___| | __ \\\ ___ ___| |__ ___ _ __ ___ ___
| '_ \| | | / __| |/ / //\\\ / __|/ __| '_ \ / _ \ '_ ` _ \ / _ \
| | | | |_| \__ \ < /// \\\ \__ \ (__| | | | __/ | | | | | __/
|_| |_|\__,_|___/_|\_\ /// \\\ |___/\___|_| |_|\___|_| |_| |_|\___|
http://justinethier.github.com/husk-scheme
(c) 2010-2012 Justin Ethier
Version 3.6.2
huski> (define (hello) 'world)
(lambda () ...)
huski> (hello)
world
husk has been tested on Windows, Linux, and FreeBSD.
More information is available on the husk website.
License
Copyright (C) 2010 Justin Ethier
husk scheme is available under the MIT license.
The interpreter is based on code from the book Write Yourself a Scheme in 48 Hours written by Jonathan Tang and hosted / maintained by Wikibooks.