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NrUT) rr'r&rVr(r8rt�WildcardPattern� wildcardsrrvr )rrrvr r9�itemr r rrY$s zNodePattern.__init__cCs�|jrHt|j|j�D].\}}|t|j�kr|dk r<|�|�dSqdSt|j�t|j�kr`dSt|j|j�D]\}}|�||�sndSqndS)r�NTF)r�rrvr)rrry�zipr|)rr5rz�cr{� subpatternr=r r rrxAs   zNodePattern._submatch)NNN)N)rLrMrNr�rYrxr r r rr� s r�c@s^eZdZdZddedfdd�Zdd�Zddd �Zdd d �Zd d �Z dd�Z dd�Z dd�Z dS)r�a A wildcard pattern can match zero or more nodes. This has all the flexibility needed to implement patterns like: .* .+ .? .{m,n} (a b c | d e | f) (...)* (...)+ (...)? (...){m,n} except it always uses non-greedy matching. NrcCs�d|kr|krtks,nt||f��|dk rtttt|��}t|�sVtt|���|D]}t|�sZtt|���qZ||_||_||_||_ dS)a� Initializer. 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NrZ bare_name� getrefcountr)rv�ranger�rrr�r �_bare_name_matches�hasattrrR�stderrr�_recursive_matches� RuntimeError�_iterative_matches)rr}�countr{Z save_stderrr r rr�s.     z WildcardPattern.generate_matchesc cs�t|�}d|jkrdifVg}|jD]0}t||�D] \}}||fV|�||f�q4q&|r�g}|D]�\}} ||krd||jkrd|jD]`}t|||d��D]H\} } | dkr�i}|�| �|�| �|| |fV|�|| |f�q�q�qd|}qXdS)z(Helper to iteratively yield the matches.rN)rrr�rvrr+r�ry) rr}Znodelenrzr�r�r{Z new_results�c0�r0�c1�r1r r rr��s*        z"WildcardPattern._iterative_matchescCspd}i}d}t|�}|sV||krVd}|jD](}|d�|||�r*|d7}d}qq*q|d|�||j<||fS)z(Special optimized matcher for bare_name.rFTrN)rrrvr|r )rr}r�r{Zdoner�Zleafr r rr��s  z"WildcardPattern._bare_name_matchesc cs�|jdk st�||jkr"difV||jkr�|jD]`}t||�D]P\}}|�||d�|d�D].\}}i}|�|�|�|�|||fVq`q@q2dS)z(Helper to recursively yield the matches.Nrr)rvrr�r�rr�ry) rr}r�r�r�r�r�r�r{r r rr� s       z"WildcardPattern._recursive_matches)N)N) rLrMrNrOr�rYrwr|r~rr�r�r�r r r rr�]s #  -r�c@s.eZdZd dd�Zdd�Zdd�Zdd �ZdS) �NegatedPatternNcCs(|dk rt|t�stt|���||_dS)a Initializer. The argument is either a pattern or None. If it is None, this only matches an empty sequence (effectively '$' in regex lingo). If it is not None, this matches whenever the argument pattern doesn't have any matches. N)r'rtrrVrv)rrvr r rrYs zNegatedPattern.__init__cCsdS)NFr r4r r rr|(szNegatedPattern.matchcCs t|�dkSrh)rr)rr}r r rr~,szNegatedPattern.match_seqccsJ|jdkr"t|�dkrFdifVn$|j�|�D] \}}dSdifVdSrh)rvrrr)rr}r�r{r r rr0s    zNegatedPattern.generate_matches)N)rLrMrNrYr|r~rr r r rr�s r�c cs�|sdifVn||d|dd�}}|�|�D]Z\}}|sH||fVq0t|||d��D].\}}i}|�|�|�|�|||fVqZq0dS)aR Generator yielding matches for a sequence of patterns and nodes. Args: patterns: a sequence of patterns nodes: a sequence of nodes Yields: (count, results) tuples where: count: the entire sequence of patterns matches nodes[:count]; results: dict containing named submatches. rrN)rry) Zpatternsr}�p�restr�r�r�r�r{r r rr<s     r)rO� __author__rR�iorr�rrrrrTr2rsrtr�r�r�r�rr r r r�<module>s$   1nNV,==#