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� {fc@sdZdZddlZddlZddlmZdZiad�Zdefd��YZ d e fd ��YZ de fd��YZd �Zdefd��YZ de fd��YZde fd��YZde fd��YZde fd��YZd�ZdS(s� Python parse tree definitions. This is a very concrete parse tree; we need to keep every token and even the comments and whitespace between tokens. There's also a pattern matching implementation here. s#Guido van Rossum <guido@python.org>i��N(tStringIOi��cCshtsXddlm}x?|jj�D]+\}}t|�tkr&|t|<q&q&Wntj||�S(Ni(tpython_symbols(t_type_reprstpygramRt__dict__titemsttypetintt setdefault(ttype_numRtnametval((s&/usr/lib64/python2.7/lib2to3/pytree.pyt type_reprstBasecBs�eZdZdZdZdZeZeZ d�Z d�ZdZd�Z d�Zd�Zd�Zd�Zd�Zd �Zd �Zd�Zd�Zd �Zed��Zed��Zd�Zd�Zd�Zejdkr�d�Z nRS(s� Abstract base class for Node and Leaf. This provides some default functionality and boilerplate using the template pattern. A node may be a subnode of at most one parent. cOs tj|�S(s7Constructor that prevents Base from being instantiated.(tobjectt__new__(tclstargstkwds((s&/usr/lib64/python2.7/lib2to3/pytree.pyR2scCs#|j|jk rtS|j|�S(sW Compare two nodes for equality. This calls the method _eq(). (t __class__tNotImplementedt_eq(tselftother((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__eq__7scCs$|j|jk rtS|j|�S(sY Compare two nodes for inequality. This calls the method _eq(). (RRR(RR((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__ne__CscCs t�dS(s_ Compare two nodes for equality. This is called by __eq__ and __ne__. It is only called if the two nodes have the same type. This must be implemented by the concrete subclass. Nodes should be considered equal if they have the same structure, ignoring the prefix string and other context information. N(tNotImplementedError(RR((s&/usr/lib64/python2.7/lib2to3/pytree.pyRMs cCs t�dS(sr Return a cloned (deep) copy of self. This must be implemented by the concrete subclass. N(R(R((s&/usr/lib64/python2.7/lib2to3/pytree.pytcloneXscCs t�dS(sx Return a post-order iterator for the tree. This must be implemented by the concrete subclass. N(R(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyt post_order`scCs t�dS(sw Return a pre-order iterator for the tree. This must be implemented by the concrete subclass. N(R(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyt pre_orderhscCs#tjdtdd�||_dS(sv Set the prefix for the node (see Leaf class). DEPRECATED; use the prefix property directly. s3set_prefix() is deprecated; use the prefix propertyt stackleveliN(twarningstwarntDeprecationWarningtprefix(RR"((s&/usr/lib64/python2.7/lib2to3/pytree.pyt set_prefixps cCstjdtdd�|jS(sy Return the prefix for the node (see Leaf class). DEPRECATED; use the prefix property directly. s3get_prefix() is deprecated; use the prefix propertyRi(RR R!R"(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyt get_prefixzs cCs�t|t�s|g}ng}t}xR|jjD]D}||krk|dk rb|j|�nt}q4|j|�q4W|jj �||j_x|D]}|j|_q�Wd|_dS(s/Replace this node with a new one in the parent.N( t isinstancetlisttFalsetparenttchildrentNonetextendtTruetappendtchanged(Rtnewt l_childrentfoundtchtx((s&/usr/lib64/python2.7/lib2to3/pytree.pytreplace�s cCs=|}x-t|t�s5|js%dS|jd}q W|jS(s9Return the line number which generated the invocant node.Ni(R%tLeafR)tlineno(Rtnode((s&/usr/lib64/python2.7/lib2to3/pytree.pyt get_lineno�s cCs&|jr|jj�nt|_dS(N(R(R.R,twas_changed(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyR.�s cCsf|jrbxVt|jj�D]?\}}||kr|jj�|jj|=d|_|SqWndS(s� Remove the node from the tree. Returns the position of the node in its parent's children before it was removed. N(R(t enumerateR)R.R*(RtiR7((s&/usr/lib64/python2.7/lib2to3/pytree.pytremove�s cCst|jdkrdSxZt|jj�D]F\}}||kr&y|jj|dSWqltk rhdSXq&q&WdS(s� The node immediately following the invocant in their parent's children list. If the invocant does not have a next sibling, it is None iN(R(R*R:R)t IndexError(RR;tchild((s&/usr/lib64/python2.7/lib2to3/pytree.pytnext_sibling�s cCsh|jdkrdSxNt|jj�D]:\}}||kr&|dkrNdS|jj|dSq&WdS(s� The node immediately preceding the invocant in their parent's children list. If the invocant does not have a previous sibling, it is None. iiN(R(R*R:R)(RR;R>((s&/usr/lib64/python2.7/lib2to3/pytree.pytprev_sibling�sccs4x-|jD]"}x|j�D]}|VqWq WdS(N(R)tleaves(RR>R3((s&/usr/lib64/python2.7/lib2to3/pytree.pyRA�scCs$|jdkrdSd|jj�S(Nii(R(R*tdepth(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyRB�scCs |j}|dkrdS|jS(s� Return the string immediately following the invocant node. This is effectively equivalent to node.next_sibling.prefix uN(R?R*R"(Rtnext_sib((s&/usr/lib64/python2.7/lib2to3/pytree.pyt get_suffix�s iicCst|�jd�S(Ntascii(tunicodetencode(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__str__�sN((ii(!t__name__t __module__t__doc__R*RR(R)R'R9twas_checkedRRt__hash__RRRRRR#R$R4R8R.R<tpropertyR?R@RARBRDtsystversion_infoRH(((s&/usr/lib64/python2.7/lib2to3/pytree.pyR s6 tNodecBs�eZdZdddd�Zd�Zd�ZejdkrHeZ nd�Z d�Zd�Zd �Z d �Zd�Zeee�Zd�Zd �Zd�ZRS(s+Concrete implementation for interior nodes.cCsm||_t|�|_x|jD]}||_q"W|dk rM||_n|r`||_n d|_dS(s� Initializer. Takes a type constant (a symbol number >= 256), a sequence of child nodes, and an optional context keyword argument. As a side effect, the parent pointers of the children are updated. N(RR&R)R(R*R"tfixers_applied(RRR)tcontextR"RRR2((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__init__�s cCs#d|jjt|j�|jfS(s)Return a canonical string representation.s %s(%s, %r)(RRIRRR)(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__repr__scCsdjtt|j��S(sk Return a pretty string representation. This reproduces the input source exactly. u(tjointmapRFR)(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__unicode__siicCs"|j|jf|j|jfkS(sCompare two nodes for equality.(RR)(RR((s&/usr/lib64/python2.7/lib2to3/pytree.pyRscCs5t|jg|jD]}|j�^qd|j�S(s$Return a cloned (deep) copy of self.RR(RQRR)RRR(RR2((s&/usr/lib64/python2.7/lib2to3/pytree.pyR!s+ccs9x-|jD]"}x|j�D]}|VqWq W|VdS(s*Return a post-order iterator for the tree.N(R)R(RR>R7((s&/usr/lib64/python2.7/lib2to3/pytree.pyR&s ccs9|Vx-|jD]"}x|j�D]}|Vq"WqWdS(s)Return a pre-order iterator for the tree.N(R)R(RR>R7((s&/usr/lib64/python2.7/lib2to3/pytree.pyR-scCs|js dS|jdjS(sO The whitespace and comments preceding this node in the input. ti(R)R"(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyt_prefix_getter4s cCs |jr||jd_ndS(Ni(R)R"(RR"((s&/usr/lib64/python2.7/lib2to3/pytree.pyt_prefix_setter<s cCs4||_d|j|_||j|<|j�dS(s� Equivalent to 'node.children[i] = child'. This method also sets the child's parent attribute appropriately. N(R(R*R)R.(RR;R>((s&/usr/lib64/python2.7/lib2to3/pytree.pyt set_childBs cCs*||_|jj||�|j�dS(s� Equivalent to 'node.children.insert(i, child)'. This method also sets the child's parent attribute appropriately. N(R(R)tinsertR.(RR;R>((s&/usr/lib64/python2.7/lib2to3/pytree.pytinsert_childLs cCs'||_|jj|�|j�dS(s� Equivalent to 'node.children.append(child)'. This method also sets the child's parent attribute appropriately. N(R(R)R-R.(RR>((s&/usr/lib64/python2.7/lib2to3/pytree.pytappend_childUs N(ii(RIRJRKR*RTRURXRORPRHRRRRRZR[RNR"R\R^R_(((s&/usr/lib64/python2.7/lib2to3/pytree.pyRQ�s$ R5cBs�eZdZdZdZdZddgd�Zd�Zd�Z e jdkrZe Znd�Z d�Zd �Zd �Zd�Zd�Zd �Zeee�ZRS(s'Concrete implementation for leaf nodes.RYicCsb|dk r*|\|_\|_|_n||_||_|dk rT||_n||_dS(s� Initializer. Takes a type constant (a token number < 256), a string value, and an optional context keyword argument. N(R*t_prefixR6tcolumnRtvalueRR(RRRbRSR"RR((s&/usr/lib64/python2.7/lib2to3/pytree.pyRThs cCsd|jj|j|jfS(s)Return a canonical string representation.s %s(%r, %r)(RRIRRb(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyRU{scCs|jt|j�S(sk Return a pretty string representation. This reproduces the input source exactly. (R"RFRb(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyRX�sicCs"|j|jf|j|jfkS(sCompare two nodes for equality.(RRb(RR((s&/usr/lib64/python2.7/lib2to3/pytree.pyR�scCs4t|j|j|j|j|jffd|j�S(s$Return a cloned (deep) copy of self.RR(R5RRbR"R6RaRR(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyR�sccs |VdS(N((R((s&/usr/lib64/python2.7/lib2to3/pytree.pyRA�sccs |VdS(s*Return a post-order iterator for the tree.N((R((s&/usr/lib64/python2.7/lib2to3/pytree.pyR�sccs |VdS(s)Return a pre-order iterator for the tree.N((R((s&/usr/lib64/python2.7/lib2to3/pytree.pyR�scCs|jS(sP The whitespace and comments preceding this token in the input. (R`(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyRZ�scCs|j�||_dS(N(R.R`(RR"((s&/usr/lib64/python2.7/lib2to3/pytree.pyR[�s N(ii(RIRJRKR`R6RaR*RTRURXRORPRHRRRARRRZR[RNR"(((s&/usr/lib64/python2.7/lib2to3/pytree.pyR5_s& cCsk|\}}}}|s'||jkrTt|�dkrA|dSt||d|�St||d|�SdS(s� Convert raw node information to a Node or Leaf instance. This is passed to the parser driver which calls it whenever a reduction of a grammar rule produces a new complete node, so that the tree is build strictly bottom-up. iiRSN(t number2symboltlenRQR5(tgrtraw_nodeRRbRSR)((s&/usr/lib64/python2.7/lib2to3/pytree.pytconvert�stBasePatterncBs\eZdZdZdZdZd�Zd�Zd�Z dd�Z dd�Zd�ZRS(s� A pattern is a tree matching pattern. It looks for a specific node type (token or symbol), and optionally for a specific content. This is an abstract base class. There are three concrete subclasses: - LeafPattern matches a single leaf node; - NodePattern matches a single node (usually non-leaf); - WildcardPattern matches a sequence of nodes of variable length. cOs tj|�S(s>Constructor that prevents BasePattern from being instantiated.(RR(RRR((s&/usr/lib64/python2.7/lib2to3/pytree.pyR�scCsht|j�|j|jg}x!|rA|ddkrA|d=q!Wd|jjdjtt |��fS(Ni��s%s(%s)s, ( RRtcontentR R*RRIRVRWtrepr(RR((s&/usr/lib64/python2.7/lib2to3/pytree.pyRU�scCs|S(s� A subclass can define this as a hook for optimizations. Returns either self or another node with the same effect. ((R((s&/usr/lib64/python2.7/lib2to3/pytree.pytoptimize�scCs�|jdk r%|j|jkr%tS|jdk r~d}|dk rOi}n|j||�setS|r~|j|�q~n|dk r�|jr�|||j<ntS(s# Does this pattern exactly match a node? Returns True if it matches, False if not. If results is not None, it must be a dict which will be updated with the nodes matching named subpatterns. Default implementation for non-wildcard patterns. N(RR*R'Rit _submatchtupdateR R,(RR7tresultstr((s&/usr/lib64/python2.7/lib2to3/pytree.pytmatch�s! cCs*t|�dkrtS|j|d|�S(s� Does this pattern exactly match a sequence of nodes? Default implementation for non-wildcard patterns. ii(RdR'Rp(RtnodesRn((s&/usr/lib64/python2.7/lib2to3/pytree.pyt match_seqsccs4i}|r0|j|d|�r0d|fVndS(s} Generator yielding all matches for this pattern. Default implementation for non-wildcard patterns. iiN(Rp(RRqRo((s&/usr/lib64/python2.7/lib2to3/pytree.pytgenerate_matchessN( RIRJRKR*RRiR RRURkRpRrRs(((s&/usr/lib64/python2.7/lib2to3/pytree.pyRh�s tLeafPatterncBs2eZdddd�Zdd�Zdd�ZRS(cCs=|dk rn|dk rn||_||_||_dS(sp Initializer. Takes optional type, content, and name. The type, if given must be a token type (< 256). If not given, this matches any *leaf* node; the content may still be required. The content, if given, must be a string. If a name is given, the matching node is stored in the results dict under that key. N(R*RRiR (RRRiR ((s&/usr/lib64/python2.7/lib2to3/pytree.pyRTs cCs&t|t�stStj|||�S(s*Override match() to insist on a leaf node.(R%R5R'RhRp(RR7Rn((s&/usr/lib64/python2.7/lib2to3/pytree.pyRp,scCs|j|jkS(s� Match the pattern's content to the node's children. This assumes the node type matches and self.content is not None. Returns True if it matches, False if not. If results is not None, it must be a dict which will be updated with the nodes matching named subpatterns. When returning False, the results dict may still be updated. (RiRb(RR7Rn((s&/usr/lib64/python2.7/lib2to3/pytree.pyRl2s N(RIRJR*RTRpRl(((s&/usr/lib64/python2.7/lib2to3/pytree.pyRtstNodePatterncBs,eZeZdddd�Zdd�ZRS(cCs�|dk rn|dk rbt|�}x8t|�D]'\}}t|t�r4t|_q4q4Wn||_||_||_ dS(sd Initializer. Takes optional type, content, and name. The type, if given, must be a symbol type (>= 256). If the type is None this matches *any* single node (leaf or not), except if content is not None, in which it only matches non-leaf nodes that also match the content pattern. The content, if not None, must be a sequence of Patterns that must match the node's children exactly. If the content is given, the type must not be None. If a name is given, the matching node is stored in the results dict under that key. N( R*R&R:R%tWildcardPatternR,t wildcardsRRiR (RRRiR R;titem((s&/usr/lib64/python2.7/lib2to3/pytree.pyRTFs cCs�|jrhxXt|j|j�D]A\}}|t|j�kr|dk r\|j|�ntSqWtSt|j�t|j�kr�tSx9t |j|j�D]"\}}|j ||�s�tSq�WtS(s� Match the pattern's content to the node's children. This assumes the node type matches and self.content is not None. Returns True if it matches, False if not. If results is not None, it must be a dict which will be updated with the nodes matching named subpatterns. When returning False, the results dict may still be updated. N(RwRsRiR)RdR*RmR,R'tzipRp(RR7RntcRot subpatternR>((s&/usr/lib64/python2.7/lib2to3/pytree.pyRlcs ""N(RIRJR'RwR*RTRl(((s&/usr/lib64/python2.7/lib2to3/pytree.pyRuBsRvcBsheZdZd ded d�Zd�Zd d�Zd d�Zd�Z d�Z d�Zd �ZRS(s 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. icCs]|dk r5ttt|��}x|D]}q(Wn||_||_||_||_dS(s� Initializer. Args: content: optional sequence of subsequences of patterns; if absent, matches one node; if present, each subsequence is an alternative [*] min: optional minimum number of times to match, default 0 max: optional maximum number of times to match, default HUGE name: optional name assigned to this match [*] Thus, if content is [[a, b, c], [d, e], [f, g, h]] this is equivalent to (a b c | d e | f g h); if content is None, this is equivalent to '.' in regular expression terms. The min and max parameters work as follows: min=0, max=maxint: .* min=1, max=maxint: .+ min=0, max=1: .? min=1, max=1: . If content is not None, replace the dot with the parenthesized list of alternatives, e.g. (a b c | d e | f g h)* N(R*ttupleRWRitmintmaxR (RRiR}R~R talt((s&/usr/lib64/python2.7/lib2to3/pytree.pyRT�s cCs/d}|jdk rWt|j�dkrWt|jd�dkrW|jdd}n|jdkr�|jdkr�|jdkr�td|j�S|dk r�|j|jkr�|j�Sn|jdkr+t|t �r+|jdkr+|j|jkr+t |j|j|j|j|j|j�S|S(s+Optimize certain stacked wildcard patterns.iiR N( R*RiRdR}R~RuR RkR%Rv(RR{((s&/usr/lib64/python2.7/lib2to3/pytree.pyRk�s . ! cCs|j|g|�S(s'Does this pattern exactly match a node?(Rr(RR7Rn((s&/usr/lib64/python2.7/lib2to3/pytree.pyRp�scCsuxn|j|�D]]\}}|t|�kr|dk ri|j|�|jrit|�||j<qintSqWtS(s4Does this pattern exactly match a sequence of nodes?N(RsRdR*RmR R&R,R'(RRqRnRzRo((s&/usr/lib64/python2.7/lib2to3/pytree.pyRr�s ccs�|jdkrsxvt|jdtt|�|j��D]4}i}|jra|| ||j<n||fVq8Wn|jdkr�|j|�Vn�tt d�r�t j }t�t _ nz�yOxH|j|d�D]4\}}|jr�|| ||j<n||fVq�WWnYt k rgxI|j|�D]4\}}|jrU|| ||j<n||fVq,WnXWdtt d�r�|t _ nXdS(s" Generator yielding matches for a sequence of nodes. Args: nodes: sequence of nodes Yields: (count, results) tuples where: count: the match comprises nodes[:count]; results: dict containing named submatches. it bare_nametgetrefcountiN(RiR*txrangeR}RdR~R t_bare_name_matchesthasattrROtstderrRt_recursive_matchestRuntimeErrort_iterative_matches(RRqtcountRotsave_stderr((s&/usr/lib64/python2.7/lib2to3/pytree.pyRs�s0/ ccs`t|�}d|jkr)difVng}xO|jD]D}x;t||�D]*\}}||fV|j||f�qOWq9Wx�|r[g}x�|D]�\}} ||kr�||jkr�x�|jD]}xvt|||�D]a\} }| dkr�i}|j| �|j|�|| |fV|j|| |f�q�q�Wq�Wq�q�W|}q�WdS(s(Helper to iteratively yield the matches.iN(RdR}RiRsR-R~Rm(RRqtnodelenRnRRzRotnew_resultstc0tr0tc1tr1((s&/usr/lib64/python2.7/lib2to3/pytree.pyR��s* )cCs�d}i}t}t|�}x_|r||krt}x?|jD]4}|dj|||�rD|d7}t}PqDqDWq!W|| ||j<||fS(s(Special optimized matcher for bare_name.ii(R'RdR,RiRpR (RRqR�RotdoneR~tleaf((s&/usr/lib64/python2.7/lib2to3/pytree.pyR�s c cs�||jkrdifVn||jkr�x�|jD]�}xwt||�D]f\}}xW|j|||d�D];\}}i}|j|�|j|�|||fVqsWqLWq6WndS(s(Helper to recursively yield the matches.iiN(R}R~RiRsR�Rm( RRqR�RR�R�R�R�Ro((s&/usr/lib64/python2.7/lib2to3/pytree.pyR�,s' N( RIRJRKR*tHUGERTRkRpRrRsR�R�R�(((s&/usr/lib64/python2.7/lib2to3/pytree.pyRvs# - tNegatedPatterncBs/eZdd�Zd�Zd�Zd�ZRS(cCs|dk rn||_dS(s 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*Ri(RRi((s&/usr/lib64/python2.7/lib2to3/pytree.pyRT=s cCstS(N(R'(RR7((s&/usr/lib64/python2.7/lib2to3/pytree.pyRpJscCst|�dkS(Ni(Rd(RRq((s&/usr/lib64/python2.7/lib2to3/pytree.pyRrNsccse|jdkr2t|�dkradifVqan/x!|jj|�D] \}}dSWdifVdS(Ni(RiR*RdRs(RRqRzRo((s&/usr/lib64/python2.7/lib2to3/pytree.pyRsRsN(RIRJR*RTRpRrRs(((s&/usr/lib64/python2.7/lib2to3/pytree.pyR�;s c cs�|sdifVn�|d|d}}x�|j|�D]s\}}|sY||fVq9xPt|||�D];\}}i}|j|�|j|�|||fVqmWq9WdS(sR 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. iiN(RsRm( tpatternsRqtptrestR�R�R�R�Ro((s&/usr/lib64/python2.7/lib2to3/pytree.pyRs^s (RKt __author__RORRR�RRRR RQR5RgRhRtRuRvR�Rs(((s&/usr/lib64/python2.7/lib2to3/pytree.pyt<module>s" �pN V,=�#

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