This is implemented as an "external DSL" in Ruby; that is (like SQL for example), a "program" in a Ruby string is passed into some kind of parser/interpreter method. In this case, it is possible to use the result "as is" or to convert to an ordinary Ruby regular expression. Though this mini-la...

Composable parser for Rip

Library to parse and build RELAX NG (RNG) and RELAX NG Compact Syntax (RNC) schemas.

Rockstar-Ruby transpiler gem

This is a ruby implementation of the Quark language

http://jtpl.sourceforge.net/ ported to ruby

Enables command-line access for methods in an including module. Reads method documentation for command line help output. Parses command line options and flags. Turn your library into a command-line app by simply including Rubycom.

An implementation of the MARCspec query language for Ruby and ruby-marc

Expands URI Templates

Set Logic Matcher for rufus-decision

ruote is an open source Ruby workflow engine

Stomp participant/listener pair for ruote 2.2

Stomp participant/listener pair for ruote 2.2

Pkl parser for Ruby

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A parser for parsing the accept headers of a HTTP request

This library helps to execute code, locally or remote over ssh.

A Ruby library that parses a string written in a custom mini-language and evaluates it to return an array of integers.

Self-ML is, as the name implies, a self-ml parser. It also has some utilities to aid in building self-ml files.

Pure Functional Language for microcontrollers.