from __future__ import absolute_import import rply __lg = rply.LexerGenerator() # Add takes a rule name, and a regular expression that defines the rule. __lg.add("OWNER", r'<[a-zA-Z0-9_.+-]+@[a-zA-Z0-9._-]+>') __lg.add("VAL", r'[\'`"][a-zA-Z0-9@_+.<>() -]+[\'`"]') __lg.add("VAR", r'[a-zA-Z0-9_<>-]+[:]?') __lg.ignore(r"\s+") __lg.ignore(r'[{}=]+') lexer = __lg.build() __pg = rply.ParserGenerator(['OWNER', 'VAL', 'VAR'], cache_id='wlp_parser') """ $accept ::= block $end block ::= blockstatement | block blockstatement blockstatement ::= owner '{' commandline '}' commandline ::= command | commandline command command ::= varpart '=' valpart owner ::= OWNERID varpart ::= VARID valpart ::= VALID """ @__pg.production('main : block') def main(p): return p[0] @__pg.production('block : blockstatement') def block(p): return p @__pg.production('block : block blockstatement') def block_blockstatement(p): p[0].append(p[1]) return p[0] @__pg.production('blockstatement : OWNER commandline') def blockstatement(p): return [p[0], p[1]] @__pg.production('commandline : command') def commandline(p): return p @__pg.production('commandline : commandline command') def commandline_command(p): p[0].append(p[1]) return p[0] @__pg.production('command : VAR VAL') def command(p): return p parser = __pg.build()