title: what next after pyparsing?
body: <p>I have a huge grammar developed for pyparsing as part of a large, pure Python application.
  I have reached the limit of performance tweaking and I'm at the point where the diminishing returns make me start to look elsewhere. Yes, I think I know most of the tips and tricks and I've profiled my grammar and my application to dust.</p>
  
  <p>What next? </p>
  
  <p>I hope to find a parser that gives me the same readability, usability (I'm using many advanced features of pyparsing such as parse-actions to start the post processing of the input which is being parsed) and python integration but <strong>at 10× the performance</strong>.</p>
  
  <p>I love the fact the the grammar is pure Python.</p>
  
  <p>All my basic blocks are regular expressions, so reusing them would be nice.</p>
  
  <p>I know I can't have everything so I am willing to give up on some of the features I have today to get to the requested 10× performance.</p>
  
  <p>Where do I go from here?</p>