INTRODUCTION
Parslet makes developing complex parsers easy. It does so by
* providing the best error reporting possible
* not generating reams of code for you to debug
Parslet takes the long way around to make your job easier. It allows for
incremental language construction. Often, you start out small, implementing
the atoms of your language first; _parslet_ takes pride in making this
possible.
Eager to try this out? Please see the associated web site:
https://kschiess.github.io/parslet/
SYNOPSIS
  require 'parslet'
  include Parslet
  # parslet parses strings
  str('foo').
    parse('foo') # => "foo"@0
  # it matches character sets
  match['abc'].parse('a') # => "a"@0
  match['abc'].parse('b') # => "b"@0
  match['abc'].parse('c') # => "c"@0
  # and it annotates its output
  str('foo').as(:important_bit).
    parse('foo') # => {:important_bit=>"foo"@0}
  # you can construct parsers with just a few lines
  quote = str('"')
  simple_string = quote >> (quote.absent? >> any).repeat >> quote
  simple_string.
    parse('"Simple Simple Simple"') # => "\"Simple Simple Simple\""@0
  # or by making a fuss about it 
  class Smalltalk < Parslet::Parser
    root :smalltalk
    rule(:smalltalk) { statements }
    rule(:statements) { 
      # insert smalltalk parser here (outside of the scope of this readme)
    }
  end
  # and then
  Smalltalk.new.parse('smalltalk')
FEATURES
  * Tools for every part of the parser chain
  * Transformers generate Abstract Syntax Trees
  * Accelerators transform parsers, making them quite a bit faster
  * Pluggable error reporters
  * Graphviz export for your parser
  * Rspec testing support rig
  * Simply Ruby, composable and hackable
COMPATIBILITY
This library is intended to work with Ruby variants >= 1.9. I've tested it on 
MRI 1.9, rbx-head, jruby. Please report as a bug if you encounter issues.
STATUS 
Production worthy.
(c) 2010-today Kaspar Schiess