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tarcieri / reia

135

Description:	Reia is a Ruby/Python-like language for BEAM, the Erlang VM
Homepage:	https://reia-lang.org
Clone URL:	git://github.com/tarcieri/reia.git Give this clone URL to anyone. `git clone git://github.com/tarcieri/reia.git`

Remove split test for the time being as it requires Erlang R12B-5

Tony Arcieri (author)

Thu Feb 19 20:58:54 -0800 2009

commit 8df27a86968ffbbb900de6822ac0c6fe1b96e19b
tree 2702833eff82d244a2fb599f0c9bfe467eec0f18
parent 340d9aec8fb0bbd98a21fb9f782c814ee5f0b460

reia /

name	age	history message
LICENSE	Sat Jul 26 13:42:05 -0700 2008	Add license information [Tony Arcieri]
README.textile	Thu Feb 19 19:46:31 -0800 2009	Implement toplevel exception handler in test ha... [Tony Arcieri]
Rakefile	Wed Feb 11 14:04:20 -0800 2009	install task fixed [pirj]
artifacts/	Sat Sep 06 00:53:29 -0700 2008	New build system [Tony Arcieri]
bin/	Fri Jan 23 21:46:54 -0800 2009	System module and script thunks for argument pr... [Tony Arcieri]
ebin/	Thu Sep 25 19:53:35 -0700 2008	Minor build system cleanups (disabling smart ex... [Tony Arcieri]
examples/	Sat Feb 07 20:32:50 -0800 2009	Add Ring example [Tony Arcieri]
lib/	Tue Jan 27 23:29:11 -0800 2009	Correct bogus comment [Tony Arcieri]
src/	Thu Feb 19 20:30:33 -0800 2009	Modify Exception to return the entire stack tra... [Tony Arcieri]
test/	Thu Feb 19 20:58:54 -0800 2009	Remove split test for the time being as it requ... [Tony Arcieri]

Reia

Welcome to Reia (pronounced RAY-uh), a Ruby/Python-like scripting language for the Erlang virtual machine (BEAM).

Compiling Reia

To compile Reia, you will need a working installation of Erlang (at least R12B-3) as well as the “rake” tool.

Reia requires Erlang version of R12B-3 (5.6.3). The latest version of Erlang is available here:

https://www.erlang.org/download.html

You’ll also need to install rake. Instructions are available at:

https://rake.rubyforge.org/

Once you’ve installed rake, type:

rake

under the Reia source tree to build Reia.

Installation

If Reia has compiled successfully, type:

rake install

to install Reia systemwide. This will install the “reia” and “ire” scripts in /usr/local/bin. Be sure to add this to your path (or move the scripts elsewhere) if you’d like to be able to use Reia systemwide.

Usage

Reia provides three ways to execute programs:

The Reia interpreter, located in bin/reia (or just “reia” if you’ve installed Reia systemwide). This runs Reia programs from the command line.

The interactive Reia interpreter, located in bin/ire (or just “ire” if you’ve installed Reia systemwide). This provides an interactive environment (a read-eval-print loop) for running Reia programs, or just exploring the language.

The Reia static compiler, located in bin/reiac (not installed systemwide). This compiles Reia to .beam files which may be used in conjunction with Erlang code. The static Reia compiler is intended for compiling the self-hosted parts of Reia and is not intended for general-purpose use.

Implementation

Here’s some thoroughly interesting implementation trivia about Reia:

Leex-based scanner (with second pass for indentation sensitivity)
Yecc-based grammar
Compiler transforms Reia abstract forms to Erlang abstract forms or BEAM bytecode
Partly self-hosted: most core Reia types are written in Reia

About the Author

Reia was created by Tony Arcieri, a programmer from Boulder, Colorado, USA. Tony has a background in network services and distributed peer-to-peer systems. His favorite programming languages are Ruby and Erlang.