Pass local state to parser code blocks about npeg HOT 3 CLOSED

  type Thing* = object           
    word: string                      
    number: int                       
                                          
  let s = peg(Thing, "foo"):              
    foo <- word * number
    word <- >+Alpha:                        
      userdata.word = $1                    
    number <- >+Digit:              
      userdata.number = parseInt($1)
                                                 
  var t = Thing()                                
  let r = s.match("foo123", t)                      
  echo r                                            
  echo t