ÿØÿà JFIF    ÿÛ „  ( %"1!%)+...383,7(-.+  -+++--++++---+-+-----+---------------+---+-++7-----ÿÀ  ß â" ÿÄ     ÿÄ H    !1AQaq"‘¡2B±ÁÑð#R“Ò Tbr‚²á3csƒ’ÂñDS¢³$CÿÄ   ÿÄ %  !1AQa"23‘ÿÚ   ? ôÿ ¨pŸªáÿ —åYõõ\?àÒü©ŠÄï¨pŸªáÿ —åYõõ\?àÓü©ŠÄá 0Ÿªáÿ Ÿå[úƒ ú®ði~TÁbqÐ8OÕpÿ ƒOò¤Oè`–RÂáœá™êi€ßÉ< FtŸI“öÌ8úDf´°å}“¾œ6  öFá°y¥jñÇh†ˆ¢ã/ÃÐ:ªcÈ "Y¡ðÑl>ÿ ”ÏËte:qž\oäŠe÷󲍷˜HT4&ÿ ÓÐü6ö®¿øþßèô Ÿ•7Ñi’•j|“ñì>b…þS?*Óôÿ ÓÐü*h¥£ír¶ü UãSç‚Ÿ[AÐaè[ûª•õ&õj?†Éö+EzP—WeÒírJFt ‘BŒ†Ï‡%#tE Øz ¥OÛ«!1›üä±Í™%ºÍãö]°î(–:@<‹ŒÊö×òÆt¦ãº+‡¦%ÌÁ²h´OƒJŒtMÜ>ÀÜÊw3Y´•牋4ǍýʏTì>œú=Íwhyë,¾Ôò×õ¿ßÊa»«þˆѪQ|%6ž™A õ%:øj<>É—ÿ Å_ˆCbõ¥š±ý¯Ýƒï…¶|RëócÍf溪“t.СøTÿ *Ä¿-{†çàczůŽ_–^XþŒ±miB[X±d 1,é”zEù»& î9gœf™9Ð'.;—™i}!ôšåîqêÛ٤ёý£½ÆA–àôe"A$˝Úsäÿ ÷Û #°xŸëí(l »ý3—¥5m! rt`†0~'j2(]S¦¦kv,ÚÇ l¦øJA£Šƒ J3E8ÙiŽ:cÉžúeZ°€¯\®kÖ(79«Ž:¯X”¾³Š&¡* ….‰Ž(ÜíŸ2¥ª‡×Hi²TF¤ò[¨íÈRëÉ䢍mgÑ.Ÿ<öäS0í„ǹÁU´f#Vß;Õ–…P@3ío<ä-±»Ž.L|kªÀê›fÂ6@»eu‚|ÓaÞÆŸ…¨ááå>åŠ?cKü6ùTÍÆ”†sĤÚ;H2RÚ†õ\Ö·Ÿn'¾ ñ#ºI¤Å´%çÁ­‚â7›‹qT3Iï¨ÖÚ5I7Ë!ÅOóŸ¶øÝñØôת¦$Tcö‘[«Ö³šÒ';Aþ ¸èíg A2Z"i¸vdÄ÷.iõ®§)¿]¤À†–‡É&ä{V¶iŽ”.Ó×Õÿ û?h¬Mt–íª[ÿ Ñÿ ÌV(í}=ibÔ¡›¥¢±b Lô¥‡piη_Z<‡z§èŒ)iÖwiÇ 2hÙ3·=’d÷8éŽ1¦¸c¤µ€7›7Ø ð\á)} ¹fËí›pAÃL%âc2 í§æQz¿;T8sæ°qø)QFMð‰XŒÂ±N¢aF¨…8¯!U  Z©RÊ ÖPVÄÀÍin™Ì-GˆªÅËŠ›•zË}º±ŽÍFò¹}Uw×#ä5B¤{î}Ð<ÙD é©¤&‡ïDbàÁôMÁ." ¤‡ú*õ'VŽ|¼´Úgllº¼klz[Æüï÷Aób‡Eÿ dÑ»Xx9ÃÜ£ÁT/`¼¸vI±Ýµ·Ë‚“G³þ*Ÿû´r|*}<¨îºœ @¦mÄ’M¹”.œ«Y–|6ÏU¤jç¥ÕÞqO ˜kDÆÁ¨5ÿ š;Њ¦¦€GÙk \ –Þ=â¼=SͧµªS°ÚÍpÜãQűÀõ¬?ÃÁ1Ñ•õZà?hóœ€ L¦l{Y*K˜Ù›zc˜–ˆâ ø+¾ ­-Ök¥%ùEÜA'}ˆ><ÊIè“bpÍ/qÞâvoX€w,\úªò6Z[XdÒæ­@Ö—€$òJí#é>'°Ú ôª˜<)4ryÙ£|óAÅn5žêŸyÒäMÝ2{"}‰–¤l÷ûWX\l¾Á¸góÉOÔ /óñB¤f¸çñ[.P˜ZsÊË*ßT܈§QN¢’¡¨§V¼(Üù*eÕ“”5T¨‹Âê¥FŒã½Dü[8'Ò¥a…Ú¶k7a *•›¼'Ò·\8¨ª\@\õ¢¦íq+DÙrmÎ…_ªæ»ŠÓœ¡¯’Ré9MÅ×D™lælffc+ŒÑ,ý™ÿ ¯þǤ=Å’Á7µ÷ÚÛ/“Ü€ñýã¼àí¾ÕÑ+ƒ,uµMâÀÄbm:ÒÎPæ{˜Gz[ƒ¯«® KHà`ßØŠéí¯P8Aq.C‰ à€kòpj´kN¶qô€…Õ,ÜNŠª-­{Zö’æû44‰sŽè‰îVíRœÕm" 6?³D9¡ÇTíÅꋇ`4«¸ÝÁô ï’ýorqКÇZ«x4Žâéþuïf¹µö[P ,Q£éaX±`PÉÍZ ¸äYúg üAx ’6Lê‚xÝÓ*äQ  Ï’¨hÍ =²,6ï#rÃ<¯–£»ƒ‹,–ê•€ aÛsñ'%Æ"®ÛüìBᝠHÚ3ß°©$“XnœÖ’î2ËTeûìxîß ¦å¿çÉ ðK§þ{‘t‚Ϋ¬jéîZ[ ”š7L¥4VÚCE×]m¤Øy”ä4-dz£œ§¸x.*ãÊÊ b÷•h:©‡¦s`BTÁRû¾g⻩‹jø sF¢àJøFl‘È•Xᓁà~*j¯ +(ÚÕ6-£¯÷GŠØy‚<Ç’.F‹Hœw(+)ÜÜâÈzÄäT§FߘãÏ;DmVœ3Àu@mÚüXÝü•3B¨òÌÁÛ<·ÃÜ z,Ì@õÅ·d2]ü8s÷IôÞ¯^Ç9¢u„~ëAŸï4«M? 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÷”¨°¾__yM1tÉ?uÆþIkÄgæ@þ[¢†°XÃJ£j·:nkÅ¢u ‘}âGzö­/IµèŠ¬¼48q¦F°ŽR¼=ûì{´¯RýicS ÕÛ íNtÍÙï£,w4rêì®»~x(©Uñ§#Ñ&œÕ¤>ÎåÍÓ9’Ö{9eV­[Öjâ²ãu]˜å2›qÑšÕJç0€sÄ|Êëè0튔bÁ>“{×_F`Ø©ºê:µä,v¤ðfc1±"«ÔÍän1#=· Âøv~H½ÐßA¾¿Ü€Óš]Õ; I¾÷ç‚Qi†î¹9ywÔKG˜áñ zQY—§ÃÕZ07§X‚ Áh;ÁM)iÌCH-¯T‘ë|A0{Ò½LÚ–TâÖkÜ’dÀ“rmm»”جPF³ÖcbE§T€ÒxKºû’Ó®7±²(\4ŽÃ¸Uu@j™yĵ;³µ!Á¢b.W¤=mõ´êµK k ¸K^ÜÛ#p*Ü14qkZç5ïë †°5Ï%ÍÛ<Õ¤×Ô¥ê†C Õ´¼ú$ƒÖ“”]Ù¬qÞÚ[4©ý!ûÏ—Áb쳐XµA¬â~`›Çr¸8ìùÝ䫦<>ä÷«?xs´ÇÑ /á;¹øüÊÈÙà{"@Žïzâ¬[âß‚ U_<ÇŸ½4èN˜ú61®qŠu ¦þF£»äJ_ˆÙÎ~ ÞAã–Ý„Ï—rŠD;xTž‘ô`É«…suãO`?³à™ô Lý#Íc5öoæØ‚y´´÷«ZR§<&JÇ+éâô´€i!Àˆ0æAoàðLèÖ-2ŸõW.’t^–(KÁmHµV@xÜÇy®Ñø­â^:Ú3w· 7½¹°ñ¸â¹®:',«Mœ—n­Á+Ãbš LÈ‘ÄnRÓÅœ%¦²‰¨ùQ:¤f‚ "PÕtô¸…cæl…&˜Ú˜Ôkv‹ž+vŠ,=¢v­6—Xy*¥t£«<™:“aîϲ=¦6rO]XI¿Œ÷¤zÚ­›¶ 6÷”w\d ü~v®ˆÌk«^m<ÿ ¢‰Õ\)ùºŽ;… lîÙÅEŠ®cѾ@vnMÏ,¼“ñ•ŽBxðÃzãÇç%3ˆ"}Ù•Åî> BÉú;Ò]V+P˜F_´ßé> Øše|ï‡ÄOmFæÇ ãqÞ$/xÐx­z`ï9"œÜij‚!7.\Td…9M‡•iŽ‹¾‘50ÞŽn¥ß4ÉôO ¹*í^QêËÜÇÌ8=Ž§s‰'ÂëÙ«á%Pú[O †ÅP¯VsŽ°.‰,kc¶ ¬A9n˜XÎ-ÞšN["¹QÕ‰ƒMýÁߺXJæÍaLj¾×Ãmã¾ãÚ uñÒþåQô¦¥ /ÄUx:‚ÍÜ’ Đ©ØÝ3V¨‰ÕnÐ6ó*óúK­«…c ¯U òhsý­jóÔj#,ímŒRµ«lbïUTŒÑ8†Ä0œÏr`ð¡¬É Ї ë"À² ™ 6¥ f¶ ¢ÚoܱԷ-<Àî)†a¶ž'Ú»¨TXqØæ¶÷YÄHy˜9ÈIW­YÀuMFë ºÏ’AqÌ4·/Ú †ô'i$øä­=Ä Ý|öK×40è|È6p‘0§)o¥ctî§H+CA-“ xØ|ÐXŠç l8íºð3Ø:³¤¬KX¯UÿÙ"""Interface to the compiler's internal symbol tables""" import _symtable from _symtable import (USE, DEF_GLOBAL, DEF_LOCAL, DEF_PARAM, DEF_IMPORT, DEF_BOUND, OPT_IMPORT_STAR, OPT_EXEC, OPT_BARE_EXEC, SCOPE_OFF, SCOPE_MASK, FREE, GLOBAL_IMPLICIT, GLOBAL_EXPLICIT, CELL, LOCAL) import weakref __all__ = ["symtable", "SymbolTable", "Class", "Function", "Symbol"] def symtable(code, filename, compile_type): top = _symtable.symtable(code, filename, compile_type) return _newSymbolTable(top, filename) class SymbolTableFactory: def __init__(self): self.__memo = weakref.WeakValueDictionary() def new(self, table, filename): if table.type == _symtable.TYPE_FUNCTION: return Function(table, filename) if table.type == _symtable.TYPE_CLASS: return Class(table, filename) return SymbolTable(table, filename) def __call__(self, table, filename): key = table, filename obj = self.__memo.get(key, None) if obj is None: obj = self.__memo[key] = self.new(table, filename) return obj _newSymbolTable = SymbolTableFactory() class SymbolTable(object): def __init__(self, raw_table, filename): self._table = raw_table self._filename = filename self._symbols = {} def __repr__(self): if self.__class__ == SymbolTable: kind = "" else: kind = "%s " % self.__class__.__name__ if self._table.name == "global": return "<{0}SymbolTable for module {1}>".format(kind, self._filename) else: return "<{0}SymbolTable for {1} in {2}>".format(kind, self._table.name, self._filename) def get_type(self): if self._table.type == _symtable.TYPE_MODULE: return "module" if self._table.type == _symtable.TYPE_FUNCTION: return "function" if self._table.type == _symtable.TYPE_CLASS: return "class" assert self._table.type in (1, 2, 3), \ "unexpected type: {0}".format(self._table.type) def get_id(self): return self._table.id def get_name(self): return self._table.name def get_lineno(self): return self._table.lineno def is_optimized(self): return bool(self._table.type == _symtable.TYPE_FUNCTION and not self._table.optimized) def is_nested(self): return bool(self._table.nested) def has_children(self): return bool(self._table.children) def has_exec(self): """Return true if the scope uses exec""" return bool(self._table.optimized & (OPT_EXEC | OPT_BARE_EXEC)) def has_import_star(self): """Return true if the scope uses import *""" return bool(self._table.optimized & OPT_IMPORT_STAR) def get_identifiers(self): return self._table.symbols.keys() def lookup(self, name): sym = self._symbols.get(name) if sym is None: flags = self._table.symbols[name] namespaces = self.__check_children(name) sym = self._symbols[name] = Symbol(name, flags, namespaces) return sym def get_symbols(self): return [self.lookup(ident) for ident in self.get_identifiers()] def __check_children(self, name): return [_newSymbolTable(st, self._filename) for st in self._table.children if st.name == name] def get_children(self): return [_newSymbolTable(st, self._filename) for st in self._table.children] class Function(SymbolTable): # Default values for instance variables __params = None __locals = None __frees = None __globals = None def __idents_matching(self, test_func): return tuple([ident for ident in self.get_identifiers() if test_func(self._table.symbols[ident])]) def get_parameters(self): if self.__params is None: self.__params = self.__idents_matching(lambda x:x & DEF_PARAM) return self.__params def get_locals(self): if self.__locals is None: locs = (LOCAL, CELL) test = lambda x: ((x >> SCOPE_OFF) & SCOPE_MASK) in locs self.__locals = self.__idents_matching(test) return self.__locals def get_globals(self): if self.__globals is None: glob = (GLOBAL_IMPLICIT, GLOBAL_EXPLICIT) test = lambda x:((x >> SCOPE_OFF) & SCOPE_MASK) in glob self.__globals = self.__idents_matching(test) return self.__globals def get_frees(self): if self.__frees is None: is_free = lambda x:((x >> SCOPE_OFF) & SCOPE_MASK) == FREE self.__frees = self.__idents_matching(is_free) return self.__frees class Class(SymbolTable): __methods = None def get_methods(self): if self.__methods is None: d = {} for st in self._table.children: d[st.name] = 1 self.__methods = tuple(d) return self.__methods class Symbol(object): def __init__(self, name, flags, namespaces=None): self.__name = name self.__flags = flags self.__scope = (flags >> SCOPE_OFF) & SCOPE_MASK # like PyST_GetScope() self.__namespaces = namespaces or () def __repr__(self): return "".format(self.__name) def get_name(self): return self.__name def is_referenced(self): return bool(self.__flags & _symtable.USE) def is_parameter(self): return bool(self.__flags & DEF_PARAM) def is_global(self): return bool(self.__scope in (GLOBAL_IMPLICIT, GLOBAL_EXPLICIT)) def is_declared_global(self): return bool(self.__scope == GLOBAL_EXPLICIT) def is_local(self): return bool(self.__flags & DEF_BOUND) def is_free(self): return bool(self.__scope == FREE) def is_imported(self): return bool(self.__flags & DEF_IMPORT) def is_assigned(self): return bool(self.__flags & DEF_LOCAL) def is_namespace(self): """Returns true if name binding introduces new namespace. If the name is used as the target of a function or class statement, this will be true. Note that a single name can be bound to multiple objects. If is_namespace() is true, the name may also be bound to other objects, like an int or list, that does not introduce a new namespace. """ return bool(self.__namespaces) def get_namespaces(self): """Return a list of namespaces bound to this name""" return self.__namespaces def get_namespace(self): """Returns the single namespace bound to this name. Raises ValueError if the name is bound to multiple namespaces. """ if len(self.__namespaces) != 1: raise ValueError, "name is bound to multiple namespaces" return self.__namespaces[0] if __name__ == "__main__": import os, sys src = open(sys.argv[0]).read() mod = symtable(src, os.path.split(sys.argv[0])[1], "exec") for ident in mod.get_identifiers(): info = mod.lookup(ident) print info, info.is_local(), info.is_namespace()