__init__.py 文件源码

def feed(self, filename, title, doctree):
        """Feed a doctree to the index."""
        self._titles[filename] = title

        visitor = WordCollector(doctree, self.lang)
        doctree.walk(visitor)

        # memoize self.lang.stem
        def stem(word):
            try:
                return self._stem_cache[word]
            except KeyError:
                self._stem_cache[word] = self.lang.stem(word)
                return self._stem_cache[word]
        _filter = self.lang.word_filter

        for word in visitor.found_title_words:
            word = stem(word)
            if _filter(word):
                self._title_mapping.setdefault(word, set()).add(filename)

        for word in visitor.found_words:
            word = stem(word)
            if word not in self._title_mapping and _filter(word):
                self._mapping.setdefault(word, set()).add(filename)