import Test import sys from Plex import * letters = "abc" spaces = " \t\n" all = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz*/{} \t\n" letter = Any(letters) space = Any(" \t\n") ident = Rep1(letter) spaces = Rep1(space) begin_comment = Str("{") end_comment = Str("}") lex = Lexicon([ (ident, 'ident'), (spaces, IGNORE), (begin_comment, Begin('comment')), State('comment', [ (end_comment, Begin('')), (AnyBut("}"), IGNORE), ]) ], debug = Test.debug, timings = sys.stderr ) Test.run(lex, "test5")