ķ &^Ę[c@sŪdZddlZddljZddlmZmZmZddlm Z ddlm Z m Z ddl m Z mZmZmZd„ZejdƒZd „Zd „Zd „Zd „Zd e jfd„ƒYZdS(sL For the ``future`` package. Adds this import line: from __future__ import division at the top and changes any old-style divisions to be calls to past.utils.old_div so the code runs as before on Py2.6/2.7 and has the same behaviour on Py3. If "from __future__ import division" is already in effect, this fixer does nothing. i˙˙˙˙N(tLeaftNodetComma(t fixer_base(tsymstdoes_tree_import(ttokent future_importttouch_import_toptwrap_in_fn_callcCs<tj}|j|ko;|jj|k o;|jj|k S(uw __future__.division redefines the meaning of a single slash for division, so we match that and only that. (RtSLASHttypet next_siblingt prev_sibling(tnodetslash((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pytmatch_divisions "s^[0-9]*[.][0-9]*$cCs+t|jd|!ƒp*t|j|dƒS(Nii(t _is_floatytchildren(Rtdiv_idx((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pyt is_floaty$scCs{t|tƒr|d}nt|tƒr;tj|jƒSt|tƒrwt|jdtƒrw|jdjdkSntS(Niufloat( t isinstancetlistRtconst_retmatchtvalueRRtFalse(texpr((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pyR(s cCs4x-t|jƒD]\}}t|ƒr|SqWtS(N(t enumerateRRR(Rtitchild((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pyt find_division5s cCsig}xOt|jƒD]>\}}||krA|jtƒƒq|j|jƒƒqWd|d_|S(Nui(RRtappendRtclonetprefix(RRRRR((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pytclone_div_operands;s  tFixDivisionSafecBs8eZdZejZdZd„Zd„Zd„Z RS(is4 term<(not('/') any)+ '/' ((not('/') any))> cCs/tt|ƒj||ƒd|jk|_dS(sO Skip this fixer if "__future__.division" is already imported. tdivisionN(tsuperR$t start_treetfuture_featurestskip(tselfttreetname((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pyR'RscCsS|j|jjkrOt|ƒ}|tk rOt||ƒsLt||ƒSqOntS(u™ Since the tree needs to be fixed once and only once if and only if it matches, we can start discarding matches after the first. (R RttermRRRR#(R*RR((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pyRYs   cCs@|jr dStd|ƒtdd|ƒtd|d|jƒS(Nudivisionu past.utilsuold_divtold_divR"(R)RRR R"(R*Rtresults((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pyt transformhs   ( t__name__t __module__t run_orderRR t _accept_typetPATTERNR'RR0(((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pyR$Hs    (t__doc__tretlib2to3.pytreetpytreetlib2to3.fixer_utilRRRtlib2to3RRRtlibfuturize.fixer_utilRRRR RtcompileRRRRR#tBaseFixR$(((sBlib/python2.7/site-packages/libfuturize/fixes/fix_division_safe.pyts "