input.py 文件源码

def push(self, evt):
        trace("[input] pushed {!r}", evt.data)
        key = evt.data
        d = self.k.get(key)
        if isinstance(d, dict):
            trace("[input] transition")
            self.stack.append(key)
            self.k = d
        else:
            if d is None:
                trace("[input] invalid")
                if self.stack or len(key) > 1 or unicodedata.category(key) == 'C':
                    self.results.append(
                        (self.invalid_cls, self.stack + [key]))
                else:
                    # small optimization:
                    self.k[key] = self.character_cls
                    self.results.append(
                        (self.character_cls, [key]))
            else:
                trace("[input] matched {}", d)
                self.results.append((d, self.stack + [key]))
            self.stack = []
            self.k = self.ck