texinfo.py 文件源码

def collect_node_menus(self):
        """Collect the menu entries for each "node" section."""
        node_menus = self.node_menus
        for node in ([self.document] +
                     self.document.traverse(nodes.section)):
            assert 'node_name' in node and node['node_name']
            entries = [s['node_name'] for s in find_subsections(node)]
            node_menus[node['node_name']] = entries
        # try to find a suitable "Top" node
        title = self.document.next_node(nodes.title)
        top = (title and title.parent) or self.document
        if not isinstance(top, (nodes.document, nodes.section)):
            top = self.document
        if top is not self.document:
            entries = node_menus[top['node_name']]
            entries += node_menus['Top'][1:]
            node_menus['Top'] = entries
            del node_menus[top['node_name']]
            top['node_name'] = 'Top'
        # handle the indices
        for name, content in self.indices:
            node_menus[name] = ()
            node_menus['Top'].append(name)