def __init__(self, lexer):
self.lexer_object = lexer
# Create logger for parser
self.log = logger.getLogger('parser-%d' % logger.sysid(self))
# Create ply parser
log_wrapper = logger.PlyLoggerWrapping(self.log)
self.parser_object = yacc.yacc(module=self, debuglog=log_wrapper, errorlog=log_wrapper, debug=1, outputdir='/tmp', write_tables=False)
self.log.info('Created parser; class ID=%d' % logger.sysid(self.__class__))
def __init__(self, source_name, error_context):
self.source_name = source_name
self.error_context = error_context
self.current_location = Location(self.source_name, 0, 0, 0)
self.data = ''
# Create logger for lexer
self.log = logger.getLogger('lexer-%d' % logger.sysid(self))
# Create ply lexer object
log_wrapper = logger.PlyLoggerWrapping(self.log)
self.lexer_object = lex.lex(module=self, debuglog=log_wrapper, errorlog=log_wrapper, debug=1)
self.log.info('Created lexer; class ID=lexer-class-%d' % logger.sysid(self.__class__))
def create(self, source_name):
'''Create the new Lexer object.'''
error_context = self._error_context or ErrorContext()
cls = self.create_class()
instance = cls(source_name, error_context)
self.log.debug('Created lexer class; id=lexer-%d, context ID=%d' % (logger.sysid(instance), logger.sysid(error_context)))
return instance
def __init__(self, lexer):
self.lexer_object = lexer
# Create logger for parser
self.log = logger.getLogger('parser-%d' % logger.sysid(self))
# The temporary parsetab.py file should be generated in /tmp.
parse_tab = tempfile.NamedTemporaryFile(prefix='parsetab-')
# This is a hack, since ply appends a .py to the supplied tabmodule name.
# So not only do we create a file for nothing but if not cleaned up manually
# a tempfile will be leaked. Thanks, David Beazley. ;-)
cleanup_file_list.append(parse_tab.name + '.py')
# Create ply parser
log_wrapper = logger.PlyLoggerWrapping(self.log)
self.parser_object = yacc.yacc(module=self, debuglog=log_wrapper, errorlog=log_wrapper, debug=1, tabmodule=parse_tab.name)
self.log.info('Created parser; class ID=%d' % logger.sysid(self.__class__))
def __init__(self):
self._tokens = {}
self._literals = set()
self._ignored = set()
self._error_tokens = {}
self._warning_tokens = {}
self.log = logger.getLogger('lexer-factory-%d' % logger.sysid(self))
self.log.info('Initialized lexer factory')
def create_class(self):
'''Dynamically create a new lexer class.'''
cls_dict = {}
literal = set(self._literals)
for key, value in self._tokens.items():
self.log.debug("Binding token %s(%r); remaining literals: %s" % (key, value, ', '.join(literal)))
if key in literal:
# The fate of how literals are handled depends whether
# any other rule matches the given literal
continue
if key in self._ignored:
name = 't_ignored_%s' % key
action = lex.TOKEN(value)(lambda self, token: self.ignore_token(token))
else:
name = 't_%s' % key
action = None
literal, action = self.__make_lex_member(value, literal, action=action)
cls_dict[name] = action
for key in literal:
self.log.debug("Binding remaining literal token %s" % key)
cls_dict['t_%s' % key] = re.escape(self._tokens[key])
if self._error_message is not None:
cls_dict['error_message'] = self._error_message
cls_dict['token_list'] = filter(lambda key: key not in self._ignored, self._tokens.keys())
cls_dict['error_tokens'] = self._error_tokens
cls_dict['warning_tokens'] = self._warning_tokens
lexer_class = type('AutoLexer', (Lexer,), cls_dict)
self.log.debug('Created lexer class; class ID=lexer-class-%d' % logger.sysid(lexer_class))
return lexer_class
def set_error_context(self, context, message=None):
'''Set error context with an error message template.'''
self._error_context = context
self._error_message = message
self.log.debug("Set error context and message; context ID=%d, message=%r" % (logger.sysid(context), message))
