def __init__(self, lexer, *args):
"""Holds a revertable Lexer state"""
self.lexer = lexer
if len(args) == 0:
self.current_lexeme = None
self.line = self.lexer.reader.state.line
self.column = self.lexer.reader.state.column
self.reader_state = self.lexer.reader.state
elif len(args) == 1:
self.reader_state = CharacterState(self.lexer.reader,
self.lexer.reader.state)
lexer_state = args[0]
self.line = lexer_state.line
self.column = lexer_state.column
self.current_lexeme = lexer_state.current_lexeme
def __init__(self, file, str_in=False):
self.source_file = None
self.state = CharacterState(self)
self.source_file = SourceFile(file, str_in)
self.source_file.open("rb")
self.next()
