Pegarus and Poison: Rubinius VM as a Multi-Language Platform http://spkr8.com/t/4032

Description:

In the past several years, PEGs (parsing expression grammars) have renewed interest in top-down parsing. Pegarus is an implementation on Rubinius of the LPEG pattern-matching tool for Lua. Poison is an implementation of _why's Potion programming language on the Rubinius VM using Pegarus.

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