test_treewalkers.py 文件源码

def PullDOMAdapter(node):
    from xml.dom import Node
    from xml.dom.pulldom import START_ELEMENT, END_ELEMENT, COMMENT, CHARACTERS

    if node.nodeType in (Node.DOCUMENT_NODE, Node.DOCUMENT_FRAGMENT_NODE):
        for childNode in node.childNodes:
            for event in PullDOMAdapter(childNode):
                yield event

    elif node.nodeType == Node.DOCUMENT_TYPE_NODE:
        raise NotImplementedError("DOCTYPE nodes are not supported by PullDOM")

    elif node.nodeType == Node.COMMENT_NODE:
        yield COMMENT, node

    elif node.nodeType in (Node.TEXT_NODE, Node.CDATA_SECTION_NODE):
        yield CHARACTERS, node

    elif node.nodeType == Node.ELEMENT_NODE:
        yield START_ELEMENT, node
        for childNode in node.childNodes:
            for event in PullDOMAdapter(childNode):
                yield event
        yield END_ELEMENT, node

    else:
        raise NotImplementedError("Node type not supported: " + str(node.nodeType))