modula2.py 文件源码

def __init__(self, **options):
        #
        # check dialect options
        #
        dialects = get_list_opt(options, 'dialect', [])
        #
        for dialect_option in dialects:
            if dialect_option in self.dialects[1:-1]:
                # valid dialect option found
                self.set_dialect(dialect_option)
                break
        #
        # Fallback Mode (DEFAULT)
        else:
            # no valid dialect option
            self.set_dialect('unknown')
        #
        self.dialect_set_by_tag = False
        #
        # check style options
        #
        styles = get_list_opt(options, 'style', [])
        #
        # use lowercase mode for Algol style
        if 'algol' in styles or 'algol_nu' in styles:
            self.algol_publication_mode = True
        else:
            self.algol_publication_mode = False
        #
        # Check option flags
        #
        self.treat_stdlib_adts_as_builtins = get_bool_opt(
            options, 'treat_stdlib_adts_as_builtins', True)
        #
        # call superclass initialiser
        RegexLexer.__init__(self, **options)

    # Set lexer to a specified dialect