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TreeWalkercB`szeZdZd�Zd�Zd�Zed�Zd�Zd�Z	d�Z
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cc`s�|}|jt�}|t|�t|� }|rKidd6|d6Vn|}|jt�}|t|�}|r�idd6|d6Vn|r�idd6|d6VndS(utGenerates SpaceCharacters and Characters tokens

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            >>> walker = TreeWalker([])
            >>> list(walker.text(''))
            []
            >>> list(walker.text('  '))
            [{u'data': '  ', u'type': u'SpaceCharacters'}]
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            [{u'data': ' ', u'type': u'SpaceCharacters'},
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