def __init__(self):
self._parser = Parser(MetaGrammar())
self._parser.enableLineComments('#')
self._parser.enableBlockComments('<!--', '-->')
self._full_backtracking = False
self._ast = None
self._clear()
class MetaParser(object):
def __init__(self):
self._parser = Parser(MetaGrammar())
self._parser.enableLineComments('#')
self._parser.enableBlockComments('<!--', '-->')
self._full_backtracking = False
self._ast = None
self._clear()
def compile_string(self, content):
self.parse_string(content)
return self._create_symbols()
def compile_file(self, file_path):
self.parse_file(file_path)
return self._create_symbols()
def _create_symbols(self):
self.analyze()
return Symbols(self._symbols,
self._token_types,
self._line_comment,
self._block_comment,
{
"full-backtracking" : self._full_backtracking
}
)
def parse_string(self, content):
self._ast = self._parser.parseString(content)
self._clear()
def parse_file(self, file_path):
self._ast = self._parser.parseFile(file_path)
self._clear()
def analyze(self):
if not self._ast:
return
self._clear()
traverser = AstTraverser(self._ast)
traverser.walk(_AnalyseStep1(self))
traverser.walk(_AnalyseStep2(self))
def _clear(self):
self._symbols = {}
self._token_types = []
self._kw_to_token_id_map = {}
self._line_comment = None
self._block_comment = None