nl_tokens: A block parser
pl_tokens: function Block ( line , def , parent ) { this . startNames = [ ] ; this . thenNames = [ ] ; this . endNames = [ ] ; for ( var i = 0 ; i < def . start . length ; i ++ ) this . startNames . push ( def . start [ i ] . toLowerCase ( ) ) ; for ( var x = 0 ; x < def . end . length ; x ++ ) this . endNames . <mask> ( def . end [ x ] . toLowerCase ( ) ) ; for ( var y = 0 ; y < def . then . length ; y ++ ) this . thenNames . push ( def . then [ y ] . toLowerCase ( ) ) ; this . line = line ; this . parent = parent ; this . searchIndex = line ; this . start = - 1 ; this . intermediateIndexes = { } ; this . intermediateCursors = { } ; this . end = - 1 ; }