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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.
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setdefault(ttype_numRtnametval((s&/usr/lib64/python2.7/lib2to3/pytree.pyt	type_reprstBasecBsûeZdZdZdZdZeZeZ	d„Z
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„Zed„ƒZed„ƒZd„Zd„Zd„Zejdkrùd„Z nRS(sÂ
    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%|tk	stdƒ‚tj|ƒS(s7Constructor that prevents Base from being instantiated.sCannot instantiate Base(R
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        Compare two nodes for equality.

        This calls the method _eq().
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        Compare two nodes for inequality.

        This calls the method _eq().
        (RRR(RR((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__ne__CscCs
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        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
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        Return a cloned (deep) copy of self.

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        N(R(R((s&/usr/lib64/python2.7/lib2to3/pytree.pytcloneXscCs
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        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
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        Return a pre-order iterator for the tree.

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        Set the prefix for the node (see Leaf class).

        DEPRECATED; use the prefix property directly.
        s3set_prefix() is deprecated; use the prefix propertyt
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        Return the prefix for the node (see Leaf class).

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cCs2|jdk	s!tt|ƒƒ‚|dk	s3t‚t|tƒsN|g}ng}t}xt|jjD]f}||krÀ|s›t|jj||fƒ‚|dk	r·|j|ƒnt	}qg|j
|ƒqgW|sït|j||fƒ‚|jjƒ||j_x|D]}|j|_qWd|_dS(s/Replace this node with a new one in the parent.N(tparenttNoneRtstrt
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cCs=|}x-t|tƒs5|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
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        Remove the node from the tree. Returns the position of the node in its
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        The node immediately following the invocant in their parent's children
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        The node immediately preceding the invocant in their parent's children
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        iiN(R&R'R<R,(RR=R@((s&/usr/lib64/python2.7/lib2to3/pytree.pytprev_siblingÇsccs4x-|jD]"}x|jƒD]}|VqWq
WdS(N(R,tleaves(RR@R5((s&/usr/lib64/python2.7/lib2to3/pytree.pyRC×scCs$|jdkrdSd|jjƒS(Nii(R&R'tdepth(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyRDÜscCs |j}|dkrdS|jS(s
        Return the string immediately following the invocant node. This is
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„Zd„ZRS(s+Concrete implementation for interior nodes.cCs¦|dkst|ƒ‚||_t|ƒ|_x;|jD]0}|jdksatt|ƒƒ‚||_q:W|dk	r†||_n|r™||_n	d|_dS(sð
        Initializer.

        Takes a type constant (a symbol number >= 256), a sequence of
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        iN(	RRR*R,R&R'treprR#tfixers_applied(RRR,tcontextR#RUR4((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__init__ós	!

cCs#d|jjt|jƒ|jfS(s)Return a canonical string representation.s
%s(%s, %r)(RRKRRR,(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyt__repr__scCsdjtt|jƒƒS(sk
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W|VdS(s*Return a post-order iterator for the tree.N(R,R(RR@R9((s&/usr/lib64/python2.7/lib2to3/pytree.pyR&s
ccs9|Vx-|jD]"}x|jƒD]}|Vq"WqWdS(s)Return a pre-order iterator for the tree.N(R,R(RR@R9((s&/usr/lib64/python2.7/lib2to3/pytree.pyR-scCs|js
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        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|<|jƒdS(s…
        Equivalent to 'node.children[i] = child'. This method also sets the
        child's parent attribute appropriately.
        N(R&R'R,R0(RR=R@((s&/usr/lib64/python2.7/lib2to3/pytree.pyt	set_childBs	
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        Equivalent to 'node.children.insert(i, child)'. This method also sets
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        N(R&R,tinsertR0(RR=R@((s&/usr/lib64/python2.7/lib2to3/pytree.pytinsert_childLs	cCs'||_|jj|ƒ|jƒdS(sˆ
        Equivalent to 'node.children.append(child)'. This method also sets the
        child's parent attribute appropriately.
        N(R&R,R/R0(RR@((s&/usr/lib64/python2.7/lib2to3/pytree.pytappend_childUs	N(ii(RKRLRMR'RWRXR[RQRRRJRRRRR]R^RPR#R_RaRb(((s&/usr/lib64/python2.7/lib2to3/pytree.pyRSïs$										
		R7cBsªeZdZdZdZdZddgd„Zd„Zd„Z	e
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„ZeeeƒZRS(s'Concrete implementation for leaf nodes.R\icCsŠd|kodkns(t|ƒ‚|dk	rR|\|_\|_|_n||_||_|dk	r|||_n||_dS(s—
        Initializer.

        Takes a type constant (a token number < 256), a string value, and an
        optional context keyword argument.
        iiN(RR't_prefixR8tcolumnRtvalueRU(RRReRVR#RU((s&/usr/lib64/python2.7/lib2to3/pytree.pyRWhs
(		cCsd|jj|j|jfS(s)Return a canonical string representation.s
%s(%r, %r)(RRKRRe(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyRX{scCs|jt|jƒS(sk
        Return a pretty string representation.

        This reproduces the input source exactly.
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        The whitespace and comments preceding this token in the input.
        (Rc(R((s&/usr/lib64/python2.7/lib2to3/pytree.pyR]¡scCs|jƒ||_dS(N(R0Rc(RR#((s&/usr/lib64/python2.7/lib2to3/pytree.pyR^§s
N(ii(RKRLRMRcR8RdR'RWRXR[RQRRRJRRRCRRR]R^RPR#(((s&/usr/lib64/python2.7/lib2to3/pytree.pyR7_s&										cCsk|\}}}}|s'||jkrTt|ƒdkrA|dSt||d|ƒSt||d|ƒSdS(sõ
    Convert raw node information to a Node or Leaf instance.

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    grammar rule produces a new complete node, so that the tree is build
    strictly bottom-up.
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number2symboltlenRSR7(tgrtraw_nodeRReRVR,((s&/usr/lib64/python2.7/lib2to3/pytree.pytconvert­stBasePatterncBs\eZdZdZdZdZd„Zd„Zd„Z	dd„Z
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    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%|tk	stdƒ‚tj|ƒS(s>Constructor that prevents BasePattern from being instantiated.sCannot instantiate BasePattern(RkRRR(RRR((s&/usr/lib64/python2.7/lib2to3/pytree.pyRÕscCsht|jƒ|j|jg}x!|rA|ddkrA|d=q!Wd|jjdjtt	|ƒƒfS(Niÿÿÿÿs%s(%s)s, (
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        ((R((s&/usr/lib64/python2.7/lib2to3/pytree.pytoptimizeàscCs§|jdk	r%|j|jkr%tS|jdk	r~d}|dk	rOi}n|j||ƒsetS|r~|j|ƒq~n|dk	r£|jr£|||j<ntS(s#
        Does this pattern exactly match a node?

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        Does this pattern exactly match a sequence of nodes?

        Default implementation for non-wildcard patterns.
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        Generator yielding all matches for this pattern.

        Default implementation for non-wildcard patterns.
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        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.

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        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.

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        (RlRe(RR9Rp((s&/usr/lib64/python2.7/lib2to3/pytree.pyRn2s
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        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.
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        Match the pattern's content to the node's children.

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    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.
    icCsÒd|ko"|ko"tkns9t||fƒ‚|dk	rªttt|ƒƒ}t|ƒsxtt|ƒƒ‚x/|D]$}t|ƒstt|ƒƒ‚qWn||_||_||_	||_
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        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)*
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%			cCs/d}|jdk	rWt|jƒdkrWt|jdƒdkrW|jdd}n|jdkr¿|jdkr¿|jdkr”td|jƒS|dk	r¿|j|jkr¿|jƒSn|jdkr+t|t	ƒr+|jdkr+|j|jkr+t	|j|j|j|j|j|jƒS|S(s+Optimize certain stacked wildcard patterns.iiR
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RmR)Ry(RR~((s&/usr/lib64/python2.7/lib2to3/pytree.pyRm°s .
!	


cCs|j|g|ƒS(s'Does this pattern exactly match a node?(Rt(RR9Rp((s&/usr/lib64/python2.7/lib2to3/pytree.pyRrÃscCsuxn|j|ƒD]]\}}|t|ƒkr|dk	ri|j|ƒ|jrit|ƒ||j<qintSqWtS(s4Does this pattern exactly match a sequence of nodes?N(RuRgR'RoR
R*R.R+(RRsRpR}Rq((s&/usr/lib64/python2.7/lib2to3/pytree.pyRtÇs
	ccsŒ|jdkrsxvt|jdtt|ƒ|jƒƒD]4}i}|jra|| ||j<n||fVq8Wn|jdkr“|j|ƒVnõtt	dƒrºt	j
}tƒt	_
nz¯yOxH|j|dƒD]4\}}|jrü|| ||j<n||fVqÓWWnYt
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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(RlR'txrangeRRgR‚R
t_bare_name_matchesthasattrRQtstderrRt_recursive_matchestRuntimeErrort_iterative_matches(RRstcountRqtsave_stderr((s&/usr/lib64/python2.7/lib2to3/pytree.pyRuÒs0/			
	ccs`t|ƒ}d|jkr)difVng}xO|jD]D}x;t||ƒD]*\}}||fV|j||fƒqOWq9WxØ|r[g}x¿|D]·\}}	||kr—||jkr—x|jD]}xvt|||ƒD]a\}
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dkrâi}|j|	ƒ|j|ƒ||
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|fƒqâqâWqÈWq—q—W|}q„WdS(s(Helper to iteratively yield the matches.iN(RgRRlRuR/R‚Ro(RRstnodelenRpRƒR}Rqtnew_resultstc0tr0tc1tr1((s&/usr/lib64/python2.7/lib2to3/pytree.pyRŒÿs*	 

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        Initializer.

        The argument is either a pattern or None.  If it is None, this
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    Generator yielding matches for a sequence of patterns and nodes.

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