����JFIFXX�����    $.' ",#(7),01444'9=82<.342  2!!22222222222222222222222222222222222222222222222222����"��4�� ���,�PG"Z_�4�˷����kjز�Z�,F+��_z�,�© �����zh6�٨�ic�fu���#ډb���_�N�?��wQ���5-�~�I���8����TK<5o�Iv-�����k�_U_�����~b�M��d����Ӝ�U�Hh��?]��E�w��Q���k�{��_}qFW7HTՑ��Y��F�?_�'ϔ��_�Ջt��=||I ��6�έ"�����D���/[�k�9���Y�8ds|\���Ҿp6�Ҵ���]��.����6�z<�v��@]�i%��$j��~�g��J>��no����pM[me�i$[����s�o�ᘨ�˸ nɜG-�ĨU�ycP�3.DB�li�;��hj���x7Z^�N�h������N3u{�:j�x�힞��#M&��jL P@_���� P��&��o8������9�����@Sz6�t7#O�ߋ �s}Yf�T���lmr����Z)'N��k�۞p����w\�Tȯ?�8`�O��i{wﭹW�[�r�� ��Q4F�׊���3m&L�=��h3����z~��#�\�l :�F,j@�� ʱ�wQT����8�"kJO���6�֚l����}���R�>ډK���]��y����&����p�}b��;N�1�m�r$�|��7�>e�@B�TM*-iH��g�D�)� E�m�|�ؘbҗ�a��Ҿ����t4���o���G��*oCN�rP���Q��@z,|?W[0�����:�n,jWiE��W��$~/�hp\��?��{(�0���+�Y8rΟ�+����>S-S����VN;�}�s?.����� w�9��˟<���Mq4�Wv'��{)0�1mB��V����W[�����8�/<� �%���wT^�5���b��)iM� pg�N�&ݝ��VO~�q���u���9� ����!��J27����$O-���! �:�%H��� ـ����y�ΠM=t{!S�� oK8������t<����è:a������[�����ա�H���~��w��Qz`�po�^ ����Q��n� �,uu�C�$ ^���,������8�#��:�6��e�|~���!�3�3.�\0��q��o�4`.|� ����y�Q�`~;�d�ׯ,��O�Zw�������`73�v�܋�<���Ȏ�� ـ4k��5�K�a�u�=9Yd��$>x�A�&�� j0� ���vF��� Y�|�y��� ~�6�@c��1vOp�Ig����4��l�OD���L����� R���c���j�_�uX6��3?nk��Wy�f;^*B� ��@�~a�`��Eu������+���6�L��.ü>��}y���}_�O�6�͐�:�YrG�X��kG�����l^w���~㒶sy��Iu�!� W ��X��N�7BV��O��!X�2����wvG�R�f�T#�����t�/?���%8�^�W�aT��G�cL�M���I��(J����1~�8�?aT ���]����AS�E��(��*E}� 2��#I/�׍qz��^t�̔���b�Yz4x���t�){ OH��+(E��A&�N�������XT��o��"�XC��'���)}�J�z�p� ��~5�}�^����+�6����w��c��Q�|Lp�d�H��}�(�.|����k��c4^�"�����Z?ȕ ��a<�L�!039C� �Eu�C�F�Ew�ç ;�n?�*o���B�8�bʝ���'#Rqf���M}7����]����s2tcS{�\icTx;�\��7K���P���ʇ Z O-��~��c>"��?�������P��E��O�8��@�8��G��Q�g�a�Վ���󁶠�䧘��_%#r�>�1�z�a��eb��qcPѵ��n���#L��� =��׀t� L�7�`��V���A{�C:�g���e@�w1 Xp3�c3�ġ����p��M"'-�@n4���fG��B3�DJ�8[Jo�ߐ���gK)ƛ��$���� ���8�3�����+���� �����6�ʻ���� ���S�kI�*KZlT _`���?��K����QK�d����B`�s}�>���`��*�>��,*@J�d�oF*����弝��O}�k��s��]��y�ߘ��c1G�V���<=�7��7����6�q�PT��tXԀ�!9*4�4Tހ3XΛex�46���Y��D ����� �BdemDa����\�_l,��G�/���֌7���Y�](�xTt^%�GE�����4�}bT���ڹ�����;Y)���B�Q��u��>J/J �⮶.�XԄ��j�ݳ�+E��d ��r�5�_D�1 ��o�� �B�x�΢�#���<��W�����8���R6�@g�M�.��� dr�D��>(otU��@x=��~v���2� ӣ�d�oBd��3�eO�6�㣷�����ݜ6��6Y��Qz`��S��{���\P�~z m5{J/L��1������<�e�ͅPu�b�]�ϔ���'������f�b� Zpw��c`"��i���BD@:)ִ�:�]��hv�E�w���T�l��P���"Ju�}��وV J��G6��. J/�Qgl߭�e�����@�z�Zev2u�)]կ�����7x���s�M�-<ɯ�c��r�v�����@��$�ޮ}lk���a���'����>x��O\�ZFu>�����ck#��&:��`�$�ai�>2Δ����l���oF[h��lE�ܺ�Πk:)���`�� $[6�����9�����kOw�\|���8}������ބ:��񶐕��I�A1/�=�2[�,�!��.}gN#�u����b��� ~��݊��}34q����d�E��Lc��$��"�[q�U�硬g^��%B �z���r�pJ�ru%v\h1Y�ne`ǥ:g���pQM~�^�Xi� ��`S�:V29.�P���V�?B�k�� AEvw%�_�9C�Q����wKekPؠ�\�;Io d�{ ߞo�c1eP����\� `����E=���@K<�Y���eڼ�J���w����{av�F�'�M�@/J��+9p���|]�����Iw &`��8���&M�hg��[�{��Xj��%��Ӓ�$��(����ʹN���<>�I���RY���K2�NPlL�ɀ)��&e����B+ь����( � �JTx���_?EZ� }@ 6�U���뙢ط�z��dWI�n` D����噥�[��uV��"�G&Ú����2g�}&m��?ċ�"����Om#��������� ��{�ON��"S�X��Ne��ysQ���@Fn��Vg���dX�~nj�]J�<�K]:��FW��b�������62�=��5f����JKw��bf�X�55��~J �%^����:�-�QIE��P��v�nZum� z � ~ə ���� ���ة����;�f��\v���g�8�1��f24;�V���ǔ�)����9���1\��c��v�/'Ƞ�w�������$�4�R-��t���� e�6�/�ġ �̕Ecy�J���u�B���<�W�ַ~�w[B1L۲�-JS΂�{���΃������A��20�c#��@ 0!1@AP"#2Q`$3V�%45a6�FRUq��� ����^7ׅ,$n�������+��F�`��2X'��0vM��p�L=������5��8������u�p~���.�`r�����\���O��,ư�0oS ��_�M�����l���4�kv\JSd���x���SW�<��Ae�IX����������$I���w�:S���y���›R��9�Q[���,�5�;�@]�%���u�@ *ro�lbI �� ��+���%m:�͇ZV�����u�̉����θau<�fc�.����{�4Ա� �Q����*�Sm��8\ujqs]{kN���)qO�y�_*dJ�b�7���yQqI&9�ԌK!�M}�R�;������S�T���1���i[U�ɵz�]��U)V�S6���3$K{�ߊ<�(� E]Զ[ǼENg�����'�\?#)Dkf��J���o��v���'�%ƞ�&K�u�!��b�35LX�Ϸ��63$K�a�;�9>,R��W��3�3� d�JeTYE.Mϧ��-�o�j3+y��y^�c�������VO�9NV\nd�1 ��!͕_)a�v;����թ�M�lWR1��)El��P;��yوÏ�u 3�k�5Pr6<�⒲l�!˞*��u־�n�!�l:����UNW ��%��Chx8vL'��X�@��*��)���̮��ˍ��� ���D-M�+J�U�kvK����+�x8��cY������?�Ԡ��~3mo��|�u@[XeY�C�\Kp�x8�oC�C�&����N�~3-H���� ��MX�s�u<`���~"WL��$8ξ��3���a�)|:@�m�\���^�`�@ҷ)�5p+��6���p�%i)P M���ngc�����#0Aruz���RL+xSS?���ʮ}()#�t��mˇ!��0}}y����<�e� �-ή�Ԩ��X������ MF���ԙ~l L.3���}�V뽺�v�����멬��Nl�)�2����^�Iq��a��M��qG��T�����c3#������3U�Ǎ���}��לS�|qa��ڃ�+���-��2�f����/��bz��ڐ�� �ݼ[2�ç����k�X�2�* �Z�d���J�G����M*9W���s{��w���T��x��y,�in�O�v��]���n����P�$�JB@=4�OTI�n��e�22a\����q�d���%�$��(���:���: /*�K[PR�fr\nڙdN���F�n�$�4�[�� U�zƶ����� �mʋ���,�ao�u 3�z� �x��Kn����\[��VFmbE;�_U��&V�Gg�]L�۪&#n%�$ɯ�dG���D�TI=�%+AB�Ru#��b4�1�»x�cs�YzڙJG��f��Il��d�eF'T� iA��T���uC�$����Y��H?����[!G`}���ͪ� �纤Hv\������j�Ex�K���!���OiƸ�Yj�+u-<���'q����uN�*�r\��+�]���<�wOZ.fp�ێ��,-*)V?j-kÊ#�`�r��dV����(�ݽBk�����G�ƛk�QmUڗe��Z���f}|����8�8��a���i��3'J�����~G_�^���d�8w������ R�`(�~�.��u���l�s+g�bv���W���lGc}��u���afE~1�Ue������Z�0�8�=e�� f@/�jqEKQQ�J��oN��J���W5~M>$6�Lt�;$ʳ{���^��6�{����v6���ķܰg�V�cnn �~z�x�«�,2�u�?cE+Ș�H؎�%�Za�)���X>uW�Tz�Nyo����s���FQƤ��$��*�&�LLXL)�1�" L��eO��ɟ�9=���:t��Z���c��Ž���Y?�ӭV�wv�~,Y��r�ۗ�|�y��GaF�����C�����.�+� ���v1���fήJ�����]�S��T��B��n5sW}y�$��~z�'�c ��8 ��� ,! �p��VN�S��N�N�q��y8z˱�A��4��*��'������2n<�s���^ǧ˭P�Jޮɏ�U�G�L�J�*#��<�V��t7�8����TĜ>��i}K%,���)[��z�21z ?�N�i�n1?T�I�R#��m-�����������������1����lA�`��fT5+��ܐ�c�q՝��ʐ��,���3�f2U�եmab��#ŠdQ�y>\��)�SLY����w#��.���ʑ�f��� ,"+�w�~�N�'�c�O�3F�������N<���)j��&��,-� �љ���֊�_�zS���TǦ����w�>��?�������n��U仆�V���e�����0���$�C�d���rP �m�׈e�Xm�Vu� �L��.�bֹ��� �[Դaզ���*��\y�8�Է:�Ez\�0�Kq�C b��̘��cө���Q��=0Y��s�N��S.���3.���O�o:���#���v7�[#߫ ��5�܎�L���Er4���9n��COWlG�^��0k�%<���ZB���aB_���������'=��{i�v�l�$�uC���mƎҝ{�c㱼�y]���W�i ��ߧc��m�H� m�"�"�����;Y�ߝ�Z�Ǔ�����:S#��|}�y�,/k�Ld� TA�(�AI$+I3��;Y*���Z��}|��ӧO��d�v��..#:n��f>�>���ȶI�TX��� 8��y����"d�R�|�)0���=���n4��6ⲑ�+��r<�O�܂~zh�z����7ܓ�HH�Ga롏���nCo�>������a ���~]���R���̲c?�6(�q�;5%� |�uj�~z8R=X��I�V=�|{v�Gj\gc��q����z�؋%M�ߍ����1y��#��@f^���^�>N�����#x#۹��6�Y~�?�dfPO��{��P�4��V��u1E1J �*|���%���JN��`eWu�zk M6���q t[�� ��g�G���v��WIG��u_ft����5�j�"�Y�:T��ɐ���*�;� e5���4����q$C��2d�}���� _S�L#m�Yp��O�.�C�;��c����Hi#֩%+) �Ӎ��ƲV���SYź��g |���tj��3�8���r|���V��1#;.SQ�A[���S������#���`n�+���$��$I �P\[�@�s��(�ED�z���P��])8�G#��0B��[ى��X�II�q<��9�~[Z멜�Z�⊔IWU&A>�P~�#��dp<�?����7���c��'~���5 ��+$���lx@�M�dm��n<=e�dyX��?{�|Aef ,|n3�<~z�ƃ�uۧ�����P��Y,�ӥQ�*g�#먙R�\���;T��i,��[9Qi歉����c>]9�� ��"�c��P�� �Md?٥��If�ت�u��k��/����F��9�c*9��Ǎ:�ØF���z�n*�@|I�ށ9����N3{'��[�'ͬ�Ҳ4��#}��!�V� Fu��,�,mTIk���v C�7v���B�6k�T9��1�*l� '~��ƞF��lU��'�M ����][ΩũJ_�{�i�I�n��$���L�� j��O�dx�����kza۪��#�E��Cl����x˘�o�����V���ɞ�ljr��)�/,�߬h�L��#��^��L�ф�,íMƁe�̩�NB�L�����iL����q�}��(��q��6IçJ$�W�E$��:������=#����(�K�B����zђ <��K(�N�۫K�w��^O{!����)�H���>x�������lx�?>Պ�+�>�W���,Ly!_�D���Ō�l���Q�!�[ �S����J��1��Ɛ�Y}��b,+�Lo�x�ɓ)����=�y�oh�@�꥟/��I��ѭ=��P�y9��� �ۍYӘ�e+�p�Jnϱ?V\SO%�(�t� ���=?MR�[Ș�����d�/ ��n�l��B�7j� ��!�;ӥ�/�[-���A�>�dN�sLj ��,ɪv��=1c�.SQ�O3�U���ƀ�ܽ�E����������̻��9G�ϷD�7(�}��Ävӌ\�y�_0[w ���<΍>����a_��[0+�L��F.�޺��f�>oN�T����q;���y\��bՃ��y�jH�<|q-eɏ�_?_9+P���Hp$�����[ux�K w�Mw��N�ی'$Y2�=��q���KB��P��~������Yul:�[<����F1�2�O���5=d����]Y�sw:���Ϯ���E��j,_Q��X��z`H1,#II ��d�wr��P˂@�ZJV����y$�\y�{}��^~���[:N����ߌ�U�������O��d�����ؾe��${p>G��3c���Ė�lʌ�� ת��[��`ϱ�-W����dg�I��ig2��� ��}s ��ؤ(%#sS@���~���3�X�nRG�~\jc3�v��ӍL��M[JB�T��s3}��j�Nʖ��W����;7��ç?=X�F=-�=����q�ߚ���#���='�c��7���ڑW�I(O+=:uxq�������������e2�zi+�kuG�R��������0�&e�n���iT^J����~\jy���p'dtG��s����O��3����9* �b#Ɋ�� p������[Bws�T�>d4�ۧs���nv�n���U���_�~,�v����ƜJ1��s�� �QIz��)�(lv8M���U=�;����56��G���s#�K���MP�=��LvyGd��}�VwWBF�'�à �?MH�U�g2�� ����!�p�7Q��j��ڴ����=��j�u��� Jn�A s���uM������e��Ɔ�Ҕ�!)'��8Ϣ�ٔ��ޝ(��Vp���צ֖d=�IC�J�Ǡ{q������kԭ�߸���i��@K����u�|�p=..�*+����x�����z[Aqġ#s2a�Ɗ���RR�)*HRsi�~�a &f��M��P����-K�L@��Z��Xy�'x�{}��Zm+���:�)�) IJ�-i�u���� ���ܒH��'�L(7�y�GӜq���� j��� 6ߌg1�g�o���,kر���tY�?W,���p���e���f�OQS��!K�۟cҒA�|ս�j�>��=⬒��˧L[�� �߿2JaB~R��u�:��Q�] �0H~���]�7��Ƽ�I���(}��cq '�ήET���q�?f�ab���ӥvr� �)o��-Q��_'����ᴎo��K������;��V���o��%���~OK ����*��b�f:���-ťIR��`B�5!RB@���ï�� �u �̯e\�_U�_������� g�ES��3�������QT��a����x����U<~�c?�*�#]�MW,[8O�a�x��]�1bC|踤�P��lw5V%�)�{t�<��d��5���0i�XSU��m:��Z�┵�i�"��1�^B�-��P�hJ��&)O��*�D��c�W��vM��)����}���P��ܗ-q����\mmζZ-l@�}��a��E�6��F�@��&Sg@���ݚ�M����� ȹ 4����#p�\H����dYDo�H���"��\��..R�B�H�z_�/5˘����6��KhJR��P�mƶi�m���3�,#c�co��q�a)*Pt����R�m�k�7x�D�E�\Y�閣_X�<���~�)���c[[�BP����6�Yq���S��0����%_����;��Àv�~�| VS؇ ��'O0��F0��\���U�-�d@�����7�SJ*z��3n��y��P����O���������m�~�P�3|Y��ʉr#�C�<�G~�.,! ���bqx���h~0=��!ǫ�jy����l�O,�[B��~��|9��ٱ����Xly�#�i�B��g%�S��������tˋ���e���ې��\[d�t)��.+u�|1 ������#�~Oj����hS�%��i.�~X���I�H�m��0n���c�1uE�q��cF�RF�o���7� �O�ꮧ� ���ۛ{��ʛi5�rw?׌#Qn�TW��~?y$��m\�\o����%W� ?=>S�N@�� �Ʈ���R����N�)�r"C�:��:����� �����#��qb��Y�. �6[��2K����2u�Ǧ�HYR��Q�MV��� �G�$��Q+.>�����nNH��q�^��� ����q��mM��V��D�+�-�#*�U�̒ ���p욳��u:�������IB���m���PV@O���r[b= �� ��1U�E��_Nm�yKbN�O���U�}�the�`�|6֮P>�\2�P�V���I�D�i�P�O;�9�r�mAHG�W�S]��J*�_�G��+kP�2����Ka�Z���H�'K�x�W�MZ%�O�YD�Rc+o��?�q��Ghm��d�S�oh�\�D�|:W������UA�Qc yT�q������~^�H��/��#p�CZ���T�I�1�ӏT����4��"�ČZ�����}��`w�#�*,ʹ�� ��0�i��課�Om�*�da��^gJ݅{���l�e9uF#T�ֲ��̲�ٞC"�q���ߍ ոޑ�o#�XZTp����@ o�8��(jd��xw�]�,f���`~�|,s��^����f�1���t��|��m�򸄭/ctr��5s��7�9Q�4�H1꠲BB@l9@���C�����+�wp�xu�£Yc�9��?`@#�o�mH�s2��)�=��2�.�l����jg�9$�Y�S�%*L������R�Y������7Z���,*=�䷘$�������arm�o�ϰ���UW.|�r�uf����IGw�t����Zwo��~5 ��YյhO+=8fF�)�W�7�L9lM�̘·Y���֘YLf�큹�pRF���99.A �"wz��=E\Z���'a� 2��Ǚ�#;�'}�G���*��l��^"q��+2FQ� hj��kŦ��${���ޮ-�T�٭cf�|�3#~�RJ����t��$b�(R��(����r���dx� >U b�&9,>���%E\� Ά�e�$��'�q't��*�א���ެ�b��-|d���SB�O�O��$�R+�H�)�܎�K��1m`;�J�2�Y~9��O�g8=vqD`K[�F)k�[���1m޼c��n���]s�k�z$@��)!I �x՝"v��9=�ZA=`Ɠi �:�E��)`7��vI��}d�YI�_ �o�:ob���o ���3Q��&D&�2=�� �Ά��;>�h����y.*ⅥS������Ӭ�+q&����j|UƧ����}���J0��WW< ۋS�)jQR�j���Ư��rN)�Gű�4Ѷ(�S)Ǣ�8��i��W52���No˓� ۍ%�5brOn�L�;�n��\G����=�^U�dI���8$�&���h��'���+�(������cȁ߫k�l��S^���cƗjԌE�ꭔ��gF���Ȓ��@���}O���*;e�v�WV���YJ\�]X'5��ղ�k�F��b 6R�o՜m��i N�i����>J����?��lPm�U��}>_Z&�KK��q�r��I�D�Չ~�q�3fL�:S�e>���E���-G���{L�6p�e,8��������QI��h��a�Xa��U�A'���ʂ���s�+טIjP�-��y�8ۈZ?J$��W�P� ��R�s�]��|�l(�ԓ��sƊi��o(��S0��Y� 8�T97.�����WiL��c�~�dxc�E|�2!�X�K�Ƙਫ਼�$((�6�~|d9u+�qd�^3�89��Y�6L�.I�����?���iI�q���9�)O/뚅����O���X��X�V��ZF[�یgQ�L��K1���RҖr@v�#��X�l��F���Нy�S�8�7�kF!A��sM���^rkp�jP�DyS$N���q��nxҍ!U�f�!eh�i�2�m���`�Y�I�9r�6� �TF���C}/�y�^���Η���5d�'��9A-��J��>{�_l+�`��A���[�'��յ�ϛ#w:݅�%��X�}�&�PSt�Q�"�-��\縵�/����$Ɨh�Xb�*�y��BS����;W�ջ_mc�����vt?2}1�;qS�d�d~u:2k5�2�R�~�z+|HE!)�Ǟl��7`��0�<�,�2*���Hl-��x�^����'_TV�gZA�'j� ^�2Ϊ��N7t�����?w�� �x1��f��Iz�C-Ȗ��K�^q�;���-W�DvT�7��8�Z�������� hK�(P:��Q- �8�n�Z���܃e貾�<�1�YT<�,�����"�6{/ �?�͟��|1�:�#g��W�>$����d��J��d�B��=��jf[��%rE^��il:��B���x���Sּ�1հ��,�=��*�7 fcG��#q� �eh?��2�7�����,�!7x��6�n�LC�4x��},Geǝ�tC.��vS �F�43��zz\��;QYC,6����~;RYS/6���|2���5���v��T��i����������mlv��������&� �nRh^ejR�LG�f���? �ۉҬܦƩ��|��Ȱ����>3����!v��i�ʯ�>�v��オ�X3e���_1z�Kȗ\<������!�8���V��]��?b�k41�Re��T�q��mz��TiOʦ�Z��Xq���L������q"+���2ۨ��8}�&N7XU7Ap�d�X��~�׿��&4e�o�F��� �H����O���č�c�� 懴�6���͉��+)��v;j��ݷ�� �UV�� i��� j���Y9GdÒJ1��詞�����V?h��l����l�cGs�ځ�������y�Ac�����\V3�? �� ܙg�>qH�S,�E�W�[�㺨�uch�⍸�O�}���a��>�q�6�n6����N6�q������N ! 1AQaq�0@����"2BRb�#Pr���3C`��Scst���$4D���%Td�� ?���N����a��3��m���C���w��������xA�m�q�m���m������$����4n淿t'��C"w��zU=D�\R+w�p+Y�T�&�պ@��ƃ��3ޯ?�Aﶂ��aŘ���@-�����Q�=���9D��ռ�ѻ@��M�V��P��܅�G5�f�Y<�u=,EC)�<�Fy'�"�&�չ�X~f��l�KԆV��?�� �W�N����=(� �;���{�r����ٌ�Y���h{�١������jW����P���Tc�����X�K�r��}���w�R��%��?���E��m�� �Y�q|����\lEE4���r���}�lsI�Y������f�$�=�d�yO����p�����yBj8jU�o�/�S��?�U��*������ˍ�0������u�q�m [�?f����a�� )Q�>����6#������� ?����0UQ����,IX���(6ڵ[�DI�MNލ�c&���υ�j\��X�R|,4��� j������T�hA�e��^���d���b<����n�� �즇�=!���3�^�`j�h�ȓr��jẕ�c�,ٞX����-����a�ﶔ���#�$��]w�O��Ӫ�1y%��L�Y<�wg#�ǝ�̗`�x�xa�t�w��»1���o7o5��>�m뭛C���Uƃߜ}�C���y1Xνm�F8�jI���]����H���ۺиE@I�i;r�8ӭ����V�F�Շ| ��&?�3|x�B�MuS�Ge�=Ӕ�#BE5G�����Y!z��_e��q�р/W>|-�Ci߇�t�1ޯќd�R3�u��g�=0 5��[?�#͏��q�cf���H��{ ?u�=?�?ǯ���}Z��z���hmΔ�BFTW�����<�q�(v� ��!��z���iW]*�J�V�z��gX֧A�q�&��/w���u�gYӘa���; �i=����g:��?2�dž6�ى�k�4�>�Pxs����}������G�9��3 ���)gG�R<>r h�$��'nc�h�P��Bj��J�ҧH� -��N1���N��?��~��}-q!=��_2hc�M��l�vY%UE�@|�v����M2�.Y[|y�"Eï��K�ZF,�ɯ?,q�?v�M 80jx�"�;�9vk�����+ ֧�� �ȺU��?�%�vcV��mA�6��Qg^M����A}�3�nl� QRN�l8�kkn�'�����(��M�7m9و�q���%ޟ���*h$Zk"��$�9��: �?U8�Sl��,,|ɒ��xH(ѷ����Gn�/Q�4�P��G�%��Ա8�N��!� �&�7�;���eKM7�4��9R/%����l�c>�x;������>��C�:�����t��h?aKX�bhe�ᜋ^�$�Iհ �hr7%F$�E��Fd���t��5���+�(M6�t����Ü�UU|zW�=a�Ts�Tg������dqP�Q����b'�m���1{|Y����X�N��b �P~��F^F:����k6�"�j!�� �I�r�`��1&�-$�Bevk:y���#yw��I0��x��=D�4��tU���P�ZH��ڠ底taP��6����b>�xa����Q�#� WeF��ŮNj�p�J* mQ�N����*I�-*�ȩ�F�g�3 �5��V�ʊ�ɮ�a��5F���O@{���NX��?����H�]3��1�Ri_u��������ѕ�� ����0��� F��~��:60�p�͈�S��qX#a�5>���`�o&+�<2�D����: �������ڝ�$�nP���*)�N�|y�Ej�F�5ټ�e���ihy�Z �>���k�bH�a�v��h�-#���!�Po=@k̆IEN��@��}Ll?j�O������߭�ʞ���Q|A07x���wt!xf���I2?Z��<ץ�T���cU�j��]��陎Ltl �}5�ϓ��$�,��O�mˊ�;�@O��jE��j(�ا,��LX���LO���Ц�90�O �.����a��nA���7������j4 ��W��_ٓ���zW�jcB������y՗+EM�)d���N�g6�y1_x��p�$Lv:��9�"z��p���ʙ$��^��JԼ*�ϭ����o���=x�Lj�6�J��u82�A�H�3$�ٕ@�=Vv�]�'�qEz�;I˼��)��=��ɯ���x �/�W(V���p�����$ �m�������u�����񶤑Oqˎ�T����r��㠚x�sr�GC��byp�G��1ߠ�w e�8�$⿄����/�M{*}��W�]˷.�CK\�ުx���/$�WPw���r� |i���&�}�{�X� �>��$-��l���?-z���g����lΆ���(F���h�vS*���b���߲ڡn,|)mrH[���a�3�ר�[1��3o_�U�3�TC�$��(�=�)0�kgP���� ��u�^=��4 �WYCҸ:��vQ�ר�X�à��tk�m,�t*��^�,�}D*� �"(�I��9R����>`�`��[~Q]�#af��i6l��8���6�:,s�s�N6�j"�A4���IuQ��6E,�GnH��zS�HO�uk�5$�I�4��ؤ�Q9�@��C����wp�BGv[]�u�Ov���0I4���\��y�����Q�Ѹ��~>Z��8�T��a��q�ޣ;z��a���/��S��I:�ܫ_�|������>=Z����8:�S��U�I�J��"IY���8%b8���H��:�QO�6�;7�I�S��J��ҌAά3��>c���E+&jf$eC+�z�;��V����� �r���ʺ������my�e���aQ�f&��6�ND��.:��NT�vm�<- u���ǝ\MvZY�N�NT��-A�>jr!S��n�O 1�3�Ns�%�3D@���`������ܟ 1�^c<���� �a�ɽ�̲�Xë#�w�|y�cW�=�9I*H8�p�^(4���՗�k��arOcW�tO�\�ƍR��8����'�K���I�Q�����?5�>[�}��yU�ײ -h��=��% q�ThG�2�)���"ו3]�!kB��*p�FDl�A���,�eEi�H�f�Ps�����5�H:�Փ~�H�0Dت�D�I����h�F3�������c��2���E��9�H��5�zԑ�ʚ�i�X�=:m�xg�hd(�v����׊�9iS��O��d@0ڽ���:�p�5�h-��t�&���X�q�ӕ,��ie�|���7A�2���O%P��E��htj��Y1��w�Ѓ!����  ���� ࢽ��My�7�\�a�@�ţ�J �4�Ȼ�F�@o�̒?4�wx��)��]�P��~�����u�����5�����7X ��9��^ܩ�U;Iꭆ 5 �������eK2�7(�{|��Y׎ �V��\"���Z�1� Z�����}��(�Ǝ"�1S���_�vE30>���p;� ΝD��%x�W�?W?v����o�^V�i�d��r[��/&>�~`�9Wh��y�;���R��� ;;ɮT��?����r$�g1�K����A��C��c��K��l:�'��3 c�ﳯ*"t8�~l��)���m��+U,z��`(�>yJ�?����h>��]��v��ЍG*�{`��;y]��I�T� ;c��NU�fo¾h���/$���|NS���1�S�"�H��V���T���4��uhǜ�]�v;���5�͠x��'C\�SBpl���h}�N����� A�Bx���%��ޭ�l��/����T��w�ʽ]D�=����K���ž�r㻠l4�S�O?=�k �M:� ��c�C�a�#ha���)�ѐxc�s���gP�iG��{+���x���Q���I= �� z��ԫ+ �8"�k�ñ�j=|����c ��y��CF��/��*9ж�h{ �?4�o� ��k�m�Q�N�x��;�Y��4膚�a�w?�6�>e]�����Q�r�:����g�,i"�����ԩA�*M�<�G��b�if��l^M��5� �Ҩ�{����6J��ZJ�����P�*�����Y���ݛu�_4�9�I8�7���������,^ToR���m4�H��?�N�S�ѕw��/S��甍�@�9H�S�T��t�ƻ���ʒU��*{Xs�@����f�����֒Li�K{H�w^���������Ϥm�tq���s� ���ք��f:��o~s��g�r��ט� �S�ѱC�e]�x���a��) ���(b-$(�j>�7q�B?ӕ�F��hV25r[7 Y� }L�R��}����*sg+��x�r�2�U=�*'WS��ZDW]�WǞ�<��叓���{�$�9Ou4��y�90-�1�'*D`�c�^o?(�9��u���ݐ��'PI&� f�Jݮ�������:wS����jfP1F:X �H�9dԯ���˝[�_54 �}*;@�ܨ�� ð�yn�T���?�ןd�#���4rG�ͨ��H�1�|-#���Mr�S3��G�3�����)�.᧏3v�z֑��r����$G"�`j �1t��x0<Ɔ�Wh6�y�6��,œ�Ga��gA����y��b��)��h�D��ß�_�m��ü �gG;��e�v��ݝ�nQ� ��C����-�*��o���y�a��M��I�>�<���]obD��"�:���G�A��-\%LT�8���c�)��+y76���o�Q�#*{�(F�⽕�y����=���rW�\p���۩�c���A���^e6��K������ʐ�cVf5$�'->���ՉN"���F�"�UQ@�f��Gb~��#�&�M=��8�ט�JNu9��D��[̤�s�o�~������ G��9T�tW^g5y$b��Y'��س�Ǵ�=��U-2 #�MC�t(�i� �lj�@Q 5�̣i�*�O����s�x�K�f��}\��M{E�V�{�υ��Ƈ�����);�H����I��fe�Lȣr�2��>��W�I�Ȃ6������i��k�� �5�YOxȺ����>��Y�f5'��|��H+��98pj�n�.O�y�������jY��~��i�w'������l�;�s�2��Y��:'lg�ꥴ)o#'Sa�a�K��Z� �m��}�`169�n���"���x��I ��*+� }F<��cГ���F�P�������ֹ*�PqX�x۩��,� ��N�� �4<-����%����:��7����W���u�`����� $�?�I��&����o��o��`v�>��P��"��l���4��5'�Z�gE���8���?��[�X�7(��.Q�-��*���ތL@̲����v��.5���[��=�t\+�CNܛ��,g�SQnH����}*F�G16���&:�t��4ُ"A��̣��$�b �|����#rs��a�����T�� ]�<�j��BS�('$�ɻ� �wP;�/�n��?�ݜ��x�F��yUn�~mL*-�������Xf�wd^�a�}��f�,=t�׵i�.2/wpN�Ep8�OР���•��R�FJ� 55TZ��T �ɭ�<��]��/�0�r�@�f��V��V����Nz�G��^���7hZi����k��3�,kN�e|�vg�1{9]_i��X5y7� 8e]�U����'�-2,���e"����]ot�I��Y_��n�(JҼ��1�O ]bXc���Nu�No��pS���Q_���_�?i�~�x h5d'�(qw52] ��'ޤ�q��o1�R!���`ywy�A4u���h<קy���\[~�4�\ X�Wt/� 6�����n�F�a8��f���z �3$�t(���q��q�x��^�XWeN'p<-v�!�{�(>ӽDP7��ո0�y)�e$ٕv�Ih'Q�EA�m*�H��RI��=:��� ���4牢) �%_iN�ݧ�l]� �Nt���G��H�L��� ɱ�g<���1V�,�J~�ٹ�"K��Q�� 9�HS�9�?@��k����r�;we݁�]I�!{ �@�G�[�"��`���J:�n]�{�cA�E����V��ʆ���#��U9�6����j�#Y�m\��q�e4h�B�7��C�������d<�?J����1g:ٳ���=Y���D�p�ц� ׈ǔ��1�]26؜oS�'��9�V�FVu�P�h�9�xc�oq�X��p�o�5��Ա5$�9W�V(�[Ak�aY錎qf;�'�[�|���b�6�Ck��)��#a#a˙��8���=äh�4��2��C��4tm^ �n'c���]GQ$[Wҿ��i���vN�{Fu ��1�gx��1┷���N�m��{j-,��x�� Ūm�ЧS�[�s���Gna���䑴�� x�p 8<������97�Q���ϴ�v�aϚG��Rt�Һ׈�f^\r��WH�JU�7Z���y)�vg=����n��4�_)y��D'y�6�]�c�5̪�\� �PF�k����&�c;��cq�$~T�7j ���nç]�<�g ":�to�t}�159�<�/�8������m�b�K#g'I'.W�����6��I/��>v��\�MN��g���m�A�yQL�4u�Lj�j9��#44�t��l^�}L����n��R��!��t��±]��r��h6ٍ>�yҏ�N��fU�� ���� Fm@�8}�/u��jb9������he:A�y�ծw��GpΧh�5����l}�3p468��)U��d��c����;Us/�֔�YX�1�O2��uq�s��`hwg�r~�{ R��mhN��؎*q 42�*th��>�#���E����#��Hv�O����q�}�����6�e��\�,Wk�#���X��b>��p}�դ��3���T5��†��6��[��@�P�y*n��|'f�֧>�lư΂�̺����SU�'*�q�p�_S�����M�� '��c�6�����m�� ySʨ;M��r���Ƌ�m�Kxo,���Gm�P��A�G�:��i��w�9�}M(�^�V��$ǒ�ѽ�9���|���� �a����J�SQ�a���r�B;����}���ٻ֢�2�%U���c�#�g���N�a�ݕ�'�v�[�OY'��3L�3�;,p�]@�S��{ls��X�'���c�jw�k'a�.��}�}&�� �dP�*�bK=ɍ!����;3n�gΊU�ߴmt�'*{,=SzfD� A��ko~�G�aoq�_mi}#�m�������P�Xhύ����mxǍ�΂���巿zf��Q���c���|kc�����?���W��Y�$���_Lv����l߶��c���`?����l�j�ݲˏ!V��6����U�Ђ(A���4y)H���p�Z_�x��>���e��R��$�/�`^'3qˏ�-&Q�=?��CFVR �D�fV�9��{�8g�������n�h�(P"��6�[�D���< E�����~0<@�`�G�6����Hг�cc�� �c�K.5��D��d�B���`?�XQ��2��ٿyqo&+�1^� DW�0�ꊩ���G�#��Q�nL3��c���������/��x ��1�1[y�x�პCW��C�c�UĨ80�m�e�4.{�m��u���I=��f�����0QRls9���f���������9���~f�����Ǩ��a�"@�8���ȁ�Q����#c�ic������G��$���G���r/$W�(��W���V�"��m�7�[m�A�m����bo��D� j����۳� l���^�k�h׽����� ��#� iXn�v��eT�k�a�^Y�4�BN��ĕ��0 !01@Q"2AaPq3BR������?���@4�Q�����T3,���㺠�W�[=JK�Ϟ���2�r^7��vc�:�9 �E�ߴ�w�S#d���Ix��u��:��Hp��9E!�� V 2;73|F��9Y���*ʬ�F��D����u&���y؟��^EA��A��(ɩ���^��GV:ݜDy�`��Jr29ܾ�㝉��[���E;Fzx��YG��U�e�Y�C���� ����v-tx����I�sם�Ę�q��Eb�+P\ :>�i�C'�;�����k|z�رn�y]�#ǿb��Q��������w�����(�r|ӹs��[�D��2v-%��@;�8<a���[\o[ϧw��I!��*0�krs)�[�J9^��ʜ��p1)� "��/_>��o��<1����A�E�y^�C��`�x1'ܣn�p��s`l���fQ��):�l����b>�Me�jH^?�kl3(�z:���1ŠK&?Q�~�{�ٺ�h�y���/�[��V�|6��}�KbX����mn[-��7�5q�94�������dm���c^���h� X��5��<�eޘ>G���-�}�دB�ޟ� ��|�rt�M��V+�]�c?�-#ڛ��^ǂ}���Lkr���O��u�>�-D�ry� D?:ޞ�U��ǜ�7�V��?瓮�"�#���r��չģVR;�n���/_� ؉v�ݶe5d�b9��/O��009�G���5n�W����JpA�*�r9�>�1��.[t���s�F���nQ� V 77R�]�ɫ8����_0<՜�IF�u(v��4��F�k�3��E)��N:��yڮe��P�`�1}�$WS��J�SQ�N�j�ٺ��޵�#l���ј(�5=��5�lǏmoW�v-�1����v,W�mn��߀$x�<����v�j(����c]��@#��1������Ǔ���o'��u+����;G�#�޸��v-lη��/(`i⣍Pm^���ԯ̾9Z��F��������n��1��� ��]�[��)�'������:�֪�W��FC����� �B9،!?���]��V��A�Վ�M��b�w��G F>_DȬ0¤�#�QR�[V��kz���m�w�"��9ZG�7'[��=�Q����j8R?�zf�\a�=��O�U����*oB�A�|G���2�54 �p��.w7� �� ��&������ξxGHp� B%��$g�����t�Џ򤵍z���HN�u�Я�-�'4��0��;_��3 !01"@AQa2Pq#3BR������?��ʩca��en��^��8���<�u#��m*08r��y�N"�<�Ѳ0��@\�p��� �����Kv�D��J8�Fҽ� �f�Y��-m�ybX�NP����}�!*8t(�OqѢ��Q�wW�K��ZD��Δ^e��!� ��B�K��p~�����e*l}z#9ң�k���q#�Ft�o��S�R����-�w�!�S���Ӥß|M�l޶V��!eˈ�8Y���c�ЮM2��tk���� ������J�fS����Ö*i/2�����n]�k�\���|4yX�8��U�P.���Ы[���l��@"�t�<������5�lF���vU�����W��W��;�b�cД^6[#7@vU�xgZv��F�6��Q,K�v��� �+Ъ��n��Ǣ��Ft���8��0��c�@�!�Zq s�v�t�;#](B��-�nῃ~���3g������5�J�%���O������n�kB�ĺ�.r��+���#�N$?�q�/�s�6��p��a����a��J/��M�8��6�ܰ"�*������ɗud"\w���aT(����[��F��U՛����RT�b���n�*��6���O��SJ�.�ij<�v�MT��R\c��5l�sZB>F��<7�;EA��{��E���Ö��1U/�#��d1�a�n.1ě����0�ʾR�h��|�R��Ao�3�m3 ��%�� ���28Q� ��y��φ���H�To�7�lW>����#i`�q���c����a��� �m,B�-j����݋�'mR1Ήt�>��V��p���s�0IbI�C.���1R�ea�����]H�6����������4B>��o��](��$B���m�����a�!=��?�B� K�Ǿ+�Ծ"�n���K��*��+��[T#�{E�J�S����Q�����s�5�:�U�\wĐ�f�3����܆&�)����I���Ԇw��E T�lrTf6Q|R�h:��[K�� �z��c֧�G�C��%\��_�a�84��HcO�bi��ؖV��7H �)*ģK~Xhչ0��4?�0��� �E<���}3���#���u�?�� ��|g�S�6ꊤ�|�I#Hڛ� �ա��w�X��9��7���Ŀ%�SL��y6č��|�F�a 8���b��$�sק�h���b9RAu7�˨p�Č�_\*w��묦��F ����4D~�f����|(�"m���NK��i�S�>�$d7SlA��/�²����SL��|6N�}���S�˯���g��]6��; �#�.��<���q'Q�1|KQ$�����񛩶"�$r�b:���N8�w@��8$�� �AjfG|~�9F ���Y��ʺ��Bwؒ������M:I岎�G��`s�YV5����6��A �b:�W���G�q%l�����F��H���7�������Fsv7��k�� 403WebShell
403Webshell
Server IP : 97.74.90.209  /  Your IP : 216.73.216.15
Web Server : Apache
System : Linux live.indianstaffingfederation.org 4.18.0-553.54.1.el8_10.x86_64 #1 SMP Tue May 27 22:49:52 EDT 2025 x86_64
User : indianstaffing ( 1003)
PHP Version : 8.3.22
Disable Function : exec,passthru,shell_exec,system
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : ON  |  Pkexec : ON
Directory :  /lib/python3.6/site-packages/jinja2/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /lib/python3.6/site-packages/jinja2/compiler.py
# -*- coding: utf-8 -*-
"""
    jinja2.compiler
    ~~~~~~~~~~~~~~~

    Compiles nodes into python code.

    :copyright: (c) 2017 by the Jinja Team.
    :license: BSD, see LICENSE for more details.
"""
from itertools import chain
from copy import deepcopy
from keyword import iskeyword as is_python_keyword
from functools import update_wrapper
from jinja2 import nodes
from jinja2.nodes import EvalContext
from jinja2.visitor import NodeVisitor
from jinja2.optimizer import Optimizer
from jinja2.exceptions import TemplateAssertionError
from jinja2.utils import Markup, concat, escape
from jinja2._compat import range_type, text_type, string_types, \
     iteritems, NativeStringIO, imap, izip
from jinja2.idtracking import Symbols, VAR_LOAD_PARAMETER, \
     VAR_LOAD_RESOLVE, VAR_LOAD_ALIAS, VAR_LOAD_UNDEFINED


operators = {
    'eq':       '==',
    'ne':       '!=',
    'gt':       '>',
    'gteq':     '>=',
    'lt':       '<',
    'lteq':     '<=',
    'in':       'in',
    'notin':    'not in'
}

# what method to iterate over items do we want to use for dict iteration
# in generated code?  on 2.x let's go with iteritems, on 3.x with items
if hasattr(dict, 'iteritems'):
    dict_item_iter = 'iteritems'
else:
    dict_item_iter = 'items'

code_features = ['division']

# does this python version support generator stops? (PEP 0479)
try:
    exec('from __future__ import generator_stop')
    code_features.append('generator_stop')
except SyntaxError:
    pass

# does this python version support yield from?
try:
    exec('def f(): yield from x()')
except SyntaxError:
    supports_yield_from = False
else:
    supports_yield_from = True


def optimizeconst(f):
    def new_func(self, node, frame, **kwargs):
        # Only optimize if the frame is not volatile
        if self.optimized and not frame.eval_ctx.volatile:
            new_node = self.optimizer.visit(node, frame.eval_ctx)
            if new_node != node:
                return self.visit(new_node, frame)
        return f(self, node, frame, **kwargs)
    return update_wrapper(new_func, f)


def generate(node, environment, name, filename, stream=None,
             defer_init=False, optimized=True):
    """Generate the python source for a node tree."""
    if not isinstance(node, nodes.Template):
        raise TypeError('Can\'t compile non template nodes')
    generator = environment.code_generator_class(environment, name, filename,
                                                 stream, defer_init,
                                                 optimized)
    generator.visit(node)
    if stream is None:
        return generator.stream.getvalue()


def has_safe_repr(value):
    """Does the node have a safe representation?"""
    if value is None or value is NotImplemented or value is Ellipsis:
        return True
    if type(value) in (bool, int, float, complex, range_type, Markup) + string_types:
        return True
    if type(value) in (tuple, list, set, frozenset):
        for item in value:
            if not has_safe_repr(item):
                return False
        return True
    elif type(value) is dict:
        for key, value in iteritems(value):
            if not has_safe_repr(key):
                return False
            if not has_safe_repr(value):
                return False
        return True
    return False


def find_undeclared(nodes, names):
    """Check if the names passed are accessed undeclared.  The return value
    is a set of all the undeclared names from the sequence of names found.
    """
    visitor = UndeclaredNameVisitor(names)
    try:
        for node in nodes:
            visitor.visit(node)
    except VisitorExit:
        pass
    return visitor.undeclared


class MacroRef(object):

    def __init__(self, node):
        self.node = node
        self.accesses_caller = False
        self.accesses_kwargs = False
        self.accesses_varargs = False


class Frame(object):
    """Holds compile time information for us."""

    def __init__(self, eval_ctx, parent=None, level=None):
        self.eval_ctx = eval_ctx
        self.symbols = Symbols(parent and parent.symbols or None,
                               level=level)

        # a toplevel frame is the root + soft frames such as if conditions.
        self.toplevel = False

        # the root frame is basically just the outermost frame, so no if
        # conditions.  This information is used to optimize inheritance
        # situations.
        self.rootlevel = False

        # in some dynamic inheritance situations the compiler needs to add
        # write tests around output statements.
        self.require_output_check = parent and parent.require_output_check

        # inside some tags we are using a buffer rather than yield statements.
        # this for example affects {% filter %} or {% macro %}.  If a frame
        # is buffered this variable points to the name of the list used as
        # buffer.
        self.buffer = None

        # the name of the block we're in, otherwise None.
        self.block = parent and parent.block or None

        # the parent of this frame
        self.parent = parent

        if parent is not None:
            self.buffer = parent.buffer

    def copy(self):
        """Create a copy of the current one."""
        rv = object.__new__(self.__class__)
        rv.__dict__.update(self.__dict__)
        rv.symbols = self.symbols.copy()
        return rv

    def inner(self, isolated=False):
        """Return an inner frame."""
        if isolated:
            return Frame(self.eval_ctx, level=self.symbols.level + 1)
        return Frame(self.eval_ctx, self)

    def soft(self):
        """Return a soft frame.  A soft frame may not be modified as
        standalone thing as it shares the resources with the frame it
        was created of, but it's not a rootlevel frame any longer.

        This is only used to implement if-statements.
        """
        rv = self.copy()
        rv.rootlevel = False
        return rv

    __copy__ = copy


class VisitorExit(RuntimeError):
    """Exception used by the `UndeclaredNameVisitor` to signal a stop."""


class DependencyFinderVisitor(NodeVisitor):
    """A visitor that collects filter and test calls."""

    def __init__(self):
        self.filters = set()
        self.tests = set()

    def visit_Filter(self, node):
        self.generic_visit(node)
        self.filters.add(node.name)

    def visit_Test(self, node):
        self.generic_visit(node)
        self.tests.add(node.name)

    def visit_Block(self, node):
        """Stop visiting at blocks."""


class UndeclaredNameVisitor(NodeVisitor):
    """A visitor that checks if a name is accessed without being
    declared.  This is different from the frame visitor as it will
    not stop at closure frames.
    """

    def __init__(self, names):
        self.names = set(names)
        self.undeclared = set()

    def visit_Name(self, node):
        if node.ctx == 'load' and node.name in self.names:
            self.undeclared.add(node.name)
            if self.undeclared == self.names:
                raise VisitorExit()
        else:
            self.names.discard(node.name)

    def visit_Block(self, node):
        """Stop visiting a blocks."""


class CompilerExit(Exception):
    """Raised if the compiler encountered a situation where it just
    doesn't make sense to further process the code.  Any block that
    raises such an exception is not further processed.
    """


class CodeGenerator(NodeVisitor):

    def __init__(self, environment, name, filename, stream=None,
                 defer_init=False, optimized=True):
        if stream is None:
            stream = NativeStringIO()
        self.environment = environment
        self.name = name
        self.filename = filename
        self.stream = stream
        self.created_block_context = False
        self.defer_init = defer_init
        self.optimized = optimized
        if optimized:
            self.optimizer = Optimizer(environment)

        # aliases for imports
        self.import_aliases = {}

        # a registry for all blocks.  Because blocks are moved out
        # into the global python scope they are registered here
        self.blocks = {}

        # the number of extends statements so far
        self.extends_so_far = 0

        # some templates have a rootlevel extends.  In this case we
        # can safely assume that we're a child template and do some
        # more optimizations.
        self.has_known_extends = False

        # the current line number
        self.code_lineno = 1

        # registry of all filters and tests (global, not block local)
        self.tests = {}
        self.filters = {}

        # the debug information
        self.debug_info = []
        self._write_debug_info = None

        # the number of new lines before the next write()
        self._new_lines = 0

        # the line number of the last written statement
        self._last_line = 0

        # true if nothing was written so far.
        self._first_write = True

        # used by the `temporary_identifier` method to get new
        # unique, temporary identifier
        self._last_identifier = 0

        # the current indentation
        self._indentation = 0

        # Tracks toplevel assignments
        self._assign_stack = []

        # Tracks parameter definition blocks
        self._param_def_block = []

        # Tracks the current context.
        self._context_reference_stack = ['context']

    # -- Various compilation helpers

    def fail(self, msg, lineno):
        """Fail with a :exc:`TemplateAssertionError`."""
        raise TemplateAssertionError(msg, lineno, self.name, self.filename)

    def temporary_identifier(self):
        """Get a new unique identifier."""
        self._last_identifier += 1
        return 't_%d' % self._last_identifier

    def buffer(self, frame):
        """Enable buffering for the frame from that point onwards."""
        frame.buffer = self.temporary_identifier()
        self.writeline('%s = []' % frame.buffer)

    def return_buffer_contents(self, frame, force_unescaped=False):
        """Return the buffer contents of the frame."""
        if not force_unescaped:
            if frame.eval_ctx.volatile:
                self.writeline('if context.eval_ctx.autoescape:')
                self.indent()
                self.writeline('return Markup(concat(%s))' % frame.buffer)
                self.outdent()
                self.writeline('else:')
                self.indent()
                self.writeline('return concat(%s)' % frame.buffer)
                self.outdent()
                return
            elif frame.eval_ctx.autoescape:
                self.writeline('return Markup(concat(%s))' % frame.buffer)
                return
        self.writeline('return concat(%s)' % frame.buffer)

    def indent(self):
        """Indent by one."""
        self._indentation += 1

    def outdent(self, step=1):
        """Outdent by step."""
        self._indentation -= step

    def start_write(self, frame, node=None):
        """Yield or write into the frame buffer."""
        if frame.buffer is None:
            self.writeline('yield ', node)
        else:
            self.writeline('%s.append(' % frame.buffer, node)

    def end_write(self, frame):
        """End the writing process started by `start_write`."""
        if frame.buffer is not None:
            self.write(')')

    def simple_write(self, s, frame, node=None):
        """Simple shortcut for start_write + write + end_write."""
        self.start_write(frame, node)
        self.write(s)
        self.end_write(frame)

    def blockvisit(self, nodes, frame):
        """Visit a list of nodes as block in a frame.  If the current frame
        is no buffer a dummy ``if 0: yield None`` is written automatically.
        """
        try:
            self.writeline('pass')
            for node in nodes:
                self.visit(node, frame)
        except CompilerExit:
            pass

    def write(self, x):
        """Write a string into the output stream."""
        if self._new_lines:
            if not self._first_write:
                self.stream.write('\n' * self._new_lines)
                self.code_lineno += self._new_lines
                if self._write_debug_info is not None:
                    self.debug_info.append((self._write_debug_info,
                                            self.code_lineno))
                    self._write_debug_info = None
            self._first_write = False
            self.stream.write('    ' * self._indentation)
            self._new_lines = 0
        self.stream.write(x)

    def writeline(self, x, node=None, extra=0):
        """Combination of newline and write."""
        self.newline(node, extra)
        self.write(x)

    def newline(self, node=None, extra=0):
        """Add one or more newlines before the next write."""
        self._new_lines = max(self._new_lines, 1 + extra)
        if node is not None and node.lineno != self._last_line:
            self._write_debug_info = node.lineno
            self._last_line = node.lineno

    def signature(self, node, frame, extra_kwargs=None):
        """Writes a function call to the stream for the current node.
        A leading comma is added automatically.  The extra keyword
        arguments may not include python keywords otherwise a syntax
        error could occour.  The extra keyword arguments should be given
        as python dict.
        """
        # if any of the given keyword arguments is a python keyword
        # we have to make sure that no invalid call is created.
        kwarg_workaround = False
        for kwarg in chain((x.key for x in node.kwargs), extra_kwargs or ()):
            if is_python_keyword(kwarg):
                kwarg_workaround = True
                break

        for arg in node.args:
            self.write(', ')
            self.visit(arg, frame)

        if not kwarg_workaround:
            for kwarg in node.kwargs:
                self.write(', ')
                self.visit(kwarg, frame)
            if extra_kwargs is not None:
                for key, value in iteritems(extra_kwargs):
                    self.write(', %s=%s' % (key, value))
        if node.dyn_args:
            self.write(', *')
            self.visit(node.dyn_args, frame)

        if kwarg_workaround:
            if node.dyn_kwargs is not None:
                self.write(', **dict({')
            else:
                self.write(', **{')
            for kwarg in node.kwargs:
                self.write('%r: ' % kwarg.key)
                self.visit(kwarg.value, frame)
                self.write(', ')
            if extra_kwargs is not None:
                for key, value in iteritems(extra_kwargs):
                    self.write('%r: %s, ' % (key, value))
            if node.dyn_kwargs is not None:
                self.write('}, **')
                self.visit(node.dyn_kwargs, frame)
                self.write(')')
            else:
                self.write('}')

        elif node.dyn_kwargs is not None:
            self.write(', **')
            self.visit(node.dyn_kwargs, frame)

    def pull_dependencies(self, nodes):
        """Pull all the dependencies."""
        visitor = DependencyFinderVisitor()
        for node in nodes:
            visitor.visit(node)
        for dependency in 'filters', 'tests':
            mapping = getattr(self, dependency)
            for name in getattr(visitor, dependency):
                if name not in mapping:
                    mapping[name] = self.temporary_identifier()
                self.writeline('%s = environment.%s[%r]' %
                               (mapping[name], dependency, name))

    def enter_frame(self, frame):
        undefs = []
        for target, (action, param) in iteritems(frame.symbols.loads):
            if action == VAR_LOAD_PARAMETER:
                pass
            elif action == VAR_LOAD_RESOLVE:
                self.writeline('%s = %s(%r)' %
                               (target, self.get_resolve_func(), param))
            elif action == VAR_LOAD_ALIAS:
                self.writeline('%s = %s' % (target, param))
            elif action == VAR_LOAD_UNDEFINED:
                undefs.append(target)
            else:
                raise NotImplementedError('unknown load instruction')
        if undefs:
            self.writeline('%s = missing' % ' = '.join(undefs))

    def leave_frame(self, frame, with_python_scope=False):
        if not with_python_scope:
            undefs = []
            for target, _ in iteritems(frame.symbols.loads):
                undefs.append(target)
            if undefs:
                self.writeline('%s = missing' % ' = '.join(undefs))

    def func(self, name):
        if self.environment.is_async:
            return 'async def %s' % name
        return 'def %s' % name

    def macro_body(self, node, frame):
        """Dump the function def of a macro or call block."""
        frame = frame.inner()
        frame.symbols.analyze_node(node)
        macro_ref = MacroRef(node)

        explicit_caller = None
        skip_special_params = set()
        args = []
        for idx, arg in enumerate(node.args):
            if arg.name == 'caller':
                explicit_caller = idx
            if arg.name in ('kwargs', 'varargs'):
                skip_special_params.add(arg.name)
            args.append(frame.symbols.ref(arg.name))

        undeclared = find_undeclared(node.body, ('caller', 'kwargs', 'varargs'))

        if 'caller' in undeclared:
            # In older Jinja2 versions there was a bug that allowed caller
            # to retain the special behavior even if it was mentioned in
            # the argument list.  However thankfully this was only really
            # working if it was the last argument.  So we are explicitly
            # checking this now and error out if it is anywhere else in
            # the argument list.
            if explicit_caller is not None:
                try:
                    node.defaults[explicit_caller - len(node.args)]
                except IndexError:
                    self.fail('When defining macros or call blocks the '
                              'special "caller" argument must be omitted '
                              'or be given a default.', node.lineno)
            else:
                args.append(frame.symbols.declare_parameter('caller'))
            macro_ref.accesses_caller = True
        if 'kwargs' in undeclared and not 'kwargs' in skip_special_params:
            args.append(frame.symbols.declare_parameter('kwargs'))
            macro_ref.accesses_kwargs = True
        if 'varargs' in undeclared and not 'varargs' in skip_special_params:
            args.append(frame.symbols.declare_parameter('varargs'))
            macro_ref.accesses_varargs = True

        # macros are delayed, they never require output checks
        frame.require_output_check = False
        frame.symbols.analyze_node(node)
        self.writeline('%s(%s):' % (self.func('macro'), ', '.join(args)), node)
        self.indent()

        self.buffer(frame)
        self.enter_frame(frame)

        self.push_parameter_definitions(frame)
        for idx, arg in enumerate(node.args):
            ref = frame.symbols.ref(arg.name)
            self.writeline('if %s is missing:' % ref)
            self.indent()
            try:
                default = node.defaults[idx - len(node.args)]
            except IndexError:
                self.writeline('%s = undefined(%r, name=%r)' % (
                    ref,
                    'parameter %r was not provided' % arg.name,
                    arg.name))
            else:
                self.writeline('%s = ' % ref)
                self.visit(default, frame)
            self.mark_parameter_stored(ref)
            self.outdent()
        self.pop_parameter_definitions()

        self.blockvisit(node.body, frame)
        self.return_buffer_contents(frame, force_unescaped=True)
        self.leave_frame(frame, with_python_scope=True)
        self.outdent()

        return frame, macro_ref

    def macro_def(self, macro_ref, frame):
        """Dump the macro definition for the def created by macro_body."""
        arg_tuple = ', '.join(repr(x.name) for x in macro_ref.node.args)
        name = getattr(macro_ref.node, 'name', None)
        if len(macro_ref.node.args) == 1:
            arg_tuple += ','
        self.write('Macro(environment, macro, %r, (%s), %r, %r, %r, '
                   'context.eval_ctx.autoescape)' %
                   (name, arg_tuple, macro_ref.accesses_kwargs,
                    macro_ref.accesses_varargs, macro_ref.accesses_caller))

    def position(self, node):
        """Return a human readable position for the node."""
        rv = 'line %d' % node.lineno
        if self.name is not None:
            rv += ' in ' + repr(self.name)
        return rv

    def dump_local_context(self, frame):
        return '{%s}' % ', '.join(
            '%r: %s' % (name, target) for name, target
            in iteritems(frame.symbols.dump_stores()))

    def write_commons(self):
        """Writes a common preamble that is used by root and block functions.
        Primarily this sets up common local helpers and enforces a generator
        through a dead branch.
        """
        self.writeline('resolve = context.resolve_or_missing')
        self.writeline('undefined = environment.undefined')
        self.writeline('if 0: yield None')

    def push_parameter_definitions(self, frame):
        """Pushes all parameter targets from the given frame into a local
        stack that permits tracking of yet to be assigned parameters.  In
        particular this enables the optimization from `visit_Name` to skip
        undefined expressions for parameters in macros as macros can reference
        otherwise unbound parameters.
        """
        self._param_def_block.append(frame.symbols.dump_param_targets())

    def pop_parameter_definitions(self):
        """Pops the current parameter definitions set."""
        self._param_def_block.pop()

    def mark_parameter_stored(self, target):
        """Marks a parameter in the current parameter definitions as stored.
        This will skip the enforced undefined checks.
        """
        if self._param_def_block:
            self._param_def_block[-1].discard(target)

    def push_context_reference(self, target):
        self._context_reference_stack.append(target)

    def pop_context_reference(self):
        self._context_reference_stack.pop()

    def get_context_ref(self):
        return self._context_reference_stack[-1]

    def get_resolve_func(self):
        target = self._context_reference_stack[-1]
        if target == 'context':
            return 'resolve'
        return '%s.resolve' % target

    def derive_context(self, frame):
        return '%s.derived(%s)' % (
            self.get_context_ref(),
            self.dump_local_context(frame),
        )

    def parameter_is_undeclared(self, target):
        """Checks if a given target is an undeclared parameter."""
        if not self._param_def_block:
            return False
        return target in self._param_def_block[-1]

    def push_assign_tracking(self):
        """Pushes a new layer for assignment tracking."""
        self._assign_stack.append(set())

    def pop_assign_tracking(self, frame):
        """Pops the topmost level for assignment tracking and updates the
        context variables if necessary.
        """
        vars = self._assign_stack.pop()
        if not frame.toplevel or not vars:
            return
        public_names = [x for x in vars if x[:1] != '_']
        if len(vars) == 1:
            name = next(iter(vars))
            ref = frame.symbols.ref(name)
            self.writeline('context.vars[%r] = %s' % (name, ref))
        else:
            self.writeline('context.vars.update({')
            for idx, name in enumerate(vars):
                if idx:
                    self.write(', ')
                ref = frame.symbols.ref(name)
                self.write('%r: %s' % (name, ref))
            self.write('})')
        if public_names:
            if len(public_names) == 1:
                self.writeline('context.exported_vars.add(%r)' %
                               public_names[0])
            else:
                self.writeline('context.exported_vars.update((%s))' %
                               ', '.join(imap(repr, public_names)))

    # -- Statement Visitors

    def visit_Template(self, node, frame=None):
        assert frame is None, 'no root frame allowed'
        eval_ctx = EvalContext(self.environment, self.name)

        from jinja2.runtime import __all__ as exported
        self.writeline('from __future__ import %s' % ', '.join(code_features))
        self.writeline('from jinja2.runtime import ' + ', '.join(exported))

        if self.environment.is_async:
            self.writeline('from jinja2.asyncsupport import auto_await, '
                           'auto_aiter, make_async_loop_context')

        # if we want a deferred initialization we cannot move the
        # environment into a local name
        envenv = not self.defer_init and ', environment=environment' or ''

        # do we have an extends tag at all?  If not, we can save some
        # overhead by just not processing any inheritance code.
        have_extends = node.find(nodes.Extends) is not None

        # find all blocks
        for block in node.find_all(nodes.Block):
            if block.name in self.blocks:
                self.fail('block %r defined twice' % block.name, block.lineno)
            self.blocks[block.name] = block

        # find all imports and import them
        for import_ in node.find_all(nodes.ImportedName):
            if import_.importname not in self.import_aliases:
                imp = import_.importname
                self.import_aliases[imp] = alias = self.temporary_identifier()
                if '.' in imp:
                    module, obj = imp.rsplit('.', 1)
                    self.writeline('from %s import %s as %s' %
                                   (module, obj, alias))
                else:
                    self.writeline('import %s as %s' % (imp, alias))

        # add the load name
        self.writeline('name = %r' % self.name)

        # generate the root render function.
        self.writeline('%s(context, missing=missing%s):' %
                       (self.func('root'), envenv), extra=1)
        self.indent()
        self.write_commons()

        # process the root
        frame = Frame(eval_ctx)
        if 'self' in find_undeclared(node.body, ('self',)):
            ref = frame.symbols.declare_parameter('self')
            self.writeline('%s = TemplateReference(context)' % ref)
        frame.symbols.analyze_node(node)
        frame.toplevel = frame.rootlevel = True
        frame.require_output_check = have_extends and not self.has_known_extends
        if have_extends:
            self.writeline('parent_template = None')
        self.enter_frame(frame)
        self.pull_dependencies(node.body)
        self.blockvisit(node.body, frame)
        self.leave_frame(frame, with_python_scope=True)
        self.outdent()

        # make sure that the parent root is called.
        if have_extends:
            if not self.has_known_extends:
                self.indent()
                self.writeline('if parent_template is not None:')
            self.indent()
            if supports_yield_from and not self.environment.is_async:
                self.writeline('yield from parent_template.'
                               'root_render_func(context)')
            else:
                self.writeline('%sfor event in parent_template.'
                               'root_render_func(context):' %
                               (self.environment.is_async and 'async ' or ''))
                self.indent()
                self.writeline('yield event')
                self.outdent()
            self.outdent(1 + (not self.has_known_extends))

        # at this point we now have the blocks collected and can visit them too.
        for name, block in iteritems(self.blocks):
            self.writeline('%s(context, missing=missing%s):' %
                           (self.func('block_' + name), envenv),
                           block, 1)
            self.indent()
            self.write_commons()
            # It's important that we do not make this frame a child of the
            # toplevel template.  This would cause a variety of
            # interesting issues with identifier tracking.
            block_frame = Frame(eval_ctx)
            undeclared = find_undeclared(block.body, ('self', 'super'))
            if 'self' in undeclared:
                ref = block_frame.symbols.declare_parameter('self')
                self.writeline('%s = TemplateReference(context)' % ref)
            if 'super' in undeclared:
                ref = block_frame.symbols.declare_parameter('super')
                self.writeline('%s = context.super(%r, '
                               'block_%s)' % (ref, name, name))
            block_frame.symbols.analyze_node(block)
            block_frame.block = name
            self.enter_frame(block_frame)
            self.pull_dependencies(block.body)
            self.blockvisit(block.body, block_frame)
            self.leave_frame(block_frame, with_python_scope=True)
            self.outdent()

        self.writeline('blocks = {%s}' % ', '.join('%r: block_%s' % (x, x)
                                                   for x in self.blocks),
                       extra=1)

        # add a function that returns the debug info
        self.writeline('debug_info = %r' % '&'.join('%s=%s' % x for x
                                                    in self.debug_info))

    def visit_Block(self, node, frame):
        """Call a block and register it for the template."""
        level = 0
        if frame.toplevel:
            # if we know that we are a child template, there is no need to
            # check if we are one
            if self.has_known_extends:
                return
            if self.extends_so_far > 0:
                self.writeline('if parent_template is None:')
                self.indent()
                level += 1

        if node.scoped:
            context = self.derive_context(frame)
        else:
            context = self.get_context_ref()

        if supports_yield_from and not self.environment.is_async and \
           frame.buffer is None:
            self.writeline('yield from context.blocks[%r][0](%s)' % (
                           node.name, context), node)
        else:
            loop = self.environment.is_async and 'async for' or 'for'
            self.writeline('%s event in context.blocks[%r][0](%s):' % (
                           loop, node.name, context), node)
            self.indent()
            self.simple_write('event', frame)
            self.outdent()

        self.outdent(level)

    def visit_Extends(self, node, frame):
        """Calls the extender."""
        if not frame.toplevel:
            self.fail('cannot use extend from a non top-level scope',
                      node.lineno)

        # if the number of extends statements in general is zero so
        # far, we don't have to add a check if something extended
        # the template before this one.
        if self.extends_so_far > 0:

            # if we have a known extends we just add a template runtime
            # error into the generated code.  We could catch that at compile
            # time too, but i welcome it not to confuse users by throwing the
            # same error at different times just "because we can".
            if not self.has_known_extends:
                self.writeline('if parent_template is not None:')
                self.indent()
            self.writeline('raise TemplateRuntimeError(%r)' %
                           'extended multiple times')

            # if we have a known extends already we don't need that code here
            # as we know that the template execution will end here.
            if self.has_known_extends:
                raise CompilerExit()
            else:
                self.outdent()

        self.writeline('parent_template = environment.get_template(', node)
        self.visit(node.template, frame)
        self.write(', %r)' % self.name)
        self.writeline('for name, parent_block in parent_template.'
                       'blocks.%s():' % dict_item_iter)
        self.indent()
        self.writeline('context.blocks.setdefault(name, []).'
                       'append(parent_block)')
        self.outdent()

        # if this extends statement was in the root level we can take
        # advantage of that information and simplify the generated code
        # in the top level from this point onwards
        if frame.rootlevel:
            self.has_known_extends = True

        # and now we have one more
        self.extends_so_far += 1

    def visit_Include(self, node, frame):
        """Handles includes."""
        if node.ignore_missing:
            self.writeline('try:')
            self.indent()

        func_name = 'get_or_select_template'
        if isinstance(node.template, nodes.Const):
            if isinstance(node.template.value, string_types):
                func_name = 'get_template'
            elif isinstance(node.template.value, (tuple, list)):
                func_name = 'select_template'
        elif isinstance(node.template, (nodes.Tuple, nodes.List)):
            func_name = 'select_template'

        self.writeline('template = environment.%s(' % func_name, node)
        self.visit(node.template, frame)
        self.write(', %r)' % self.name)
        if node.ignore_missing:
            self.outdent()
            self.writeline('except TemplateNotFound:')
            self.indent()
            self.writeline('pass')
            self.outdent()
            self.writeline('else:')
            self.indent()

        skip_event_yield = False
        if node.with_context:
            loop = self.environment.is_async and 'async for' or 'for'
            self.writeline('%s event in template.root_render_func('
                           'template.new_context(context.get_all(), True, '
                           '%s)):' % (loop, self.dump_local_context(frame)))
        elif self.environment.is_async:
            self.writeline('for event in (await '
                           'template._get_default_module_async())'
                           '._body_stream:')
        else:
            if supports_yield_from:
                self.writeline('yield from template._get_default_module()'
                               '._body_stream')
                skip_event_yield = True
            else:
                self.writeline('for event in template._get_default_module()'
                               '._body_stream:')

        if not skip_event_yield:
            self.indent()
            self.simple_write('event', frame)
            self.outdent()

        if node.ignore_missing:
            self.outdent()

    def visit_Import(self, node, frame):
        """Visit regular imports."""
        self.writeline('%s = ' % frame.symbols.ref(node.target), node)
        if frame.toplevel:
            self.write('context.vars[%r] = ' % node.target)
        if self.environment.is_async:
            self.write('await ')
        self.write('environment.get_template(')
        self.visit(node.template, frame)
        self.write(', %r).' % self.name)
        if node.with_context:
            self.write('make_module%s(context.get_all(), True, %s)'
                       % (self.environment.is_async and '_async' or '',
                          self.dump_local_context(frame)))
        elif self.environment.is_async:
            self.write('_get_default_module_async()')
        else:
            self.write('_get_default_module()')
        if frame.toplevel and not node.target.startswith('_'):
            self.writeline('context.exported_vars.discard(%r)' % node.target)

    def visit_FromImport(self, node, frame):
        """Visit named imports."""
        self.newline(node)
        self.write('included_template = %senvironment.get_template('
                   % (self.environment.is_async and 'await ' or ''))
        self.visit(node.template, frame)
        self.write(', %r).' % self.name)
        if node.with_context:
            self.write('make_module%s(context.get_all(), True, %s)'
                       % (self.environment.is_async and '_async' or '',
                          self.dump_local_context(frame)))
        elif self.environment.is_async:
            self.write('_get_default_module_async()')
        else:
            self.write('_get_default_module()')

        var_names = []
        discarded_names = []
        for name in node.names:
            if isinstance(name, tuple):
                name, alias = name
            else:
                alias = name
            self.writeline('%s = getattr(included_template, '
                           '%r, missing)' % (frame.symbols.ref(alias), name))
            self.writeline('if %s is missing:' % frame.symbols.ref(alias))
            self.indent()
            self.writeline('%s = undefined(%r %% '
                           'included_template.__name__, '
                           'name=%r)' %
                           (frame.symbols.ref(alias),
                            'the template %%r (imported on %s) does '
                            'not export the requested name %s' % (
                                self.position(node),
                                repr(name)
                           ), name))
            self.outdent()
            if frame.toplevel:
                var_names.append(alias)
                if not alias.startswith('_'):
                    discarded_names.append(alias)

        if var_names:
            if len(var_names) == 1:
                name = var_names[0]
                self.writeline('context.vars[%r] = %s' %
                               (name, frame.symbols.ref(name)))
            else:
                self.writeline('context.vars.update({%s})' % ', '.join(
                    '%r: %s' % (name, frame.symbols.ref(name)) for name in var_names
                ))
        if discarded_names:
            if len(discarded_names) == 1:
                self.writeline('context.exported_vars.discard(%r)' %
                               discarded_names[0])
            else:
                self.writeline('context.exported_vars.difference_'
                               'update((%s))' % ', '.join(imap(repr, discarded_names)))

    def visit_For(self, node, frame):
        loop_frame = frame.inner()
        test_frame = frame.inner()
        else_frame = frame.inner()

        # try to figure out if we have an extended loop.  An extended loop
        # is necessary if the loop is in recursive mode if the special loop
        # variable is accessed in the body.
        extended_loop = node.recursive or 'loop' in \
                        find_undeclared(node.iter_child_nodes(
                            only=('body',)), ('loop',))

        loop_ref = None
        if extended_loop:
            loop_ref = loop_frame.symbols.declare_parameter('loop')

        loop_frame.symbols.analyze_node(node, for_branch='body')
        if node.else_:
            else_frame.symbols.analyze_node(node, for_branch='else')

        if node.test:
            loop_filter_func = self.temporary_identifier()
            test_frame.symbols.analyze_node(node, for_branch='test')
            self.writeline('%s(fiter):' % self.func(loop_filter_func), node.test)
            self.indent()
            self.enter_frame(test_frame)
            self.writeline(self.environment.is_async and 'async for ' or 'for ')
            self.visit(node.target, loop_frame)
            self.write(' in ')
            self.write(self.environment.is_async and 'auto_aiter(fiter)' or 'fiter')
            self.write(':')
            self.indent()
            self.writeline('if ', node.test)
            self.visit(node.test, test_frame)
            self.write(':')
            self.indent()
            self.writeline('yield ')
            self.visit(node.target, loop_frame)
            self.outdent(3)
            self.leave_frame(test_frame, with_python_scope=True)

        # if we don't have an recursive loop we have to find the shadowed
        # variables at that point.  Because loops can be nested but the loop
        # variable is a special one we have to enforce aliasing for it.
        if node.recursive:
            self.writeline('%s(reciter, loop_render_func, depth=0):' %
                           self.func('loop'), node)
            self.indent()
            self.buffer(loop_frame)

            # Use the same buffer for the else frame
            else_frame.buffer = loop_frame.buffer

        # make sure the loop variable is a special one and raise a template
        # assertion error if a loop tries to write to loop
        if extended_loop:
            self.writeline('%s = missing' % loop_ref)

        for name in node.find_all(nodes.Name):
            if name.ctx == 'store' and name.name == 'loop':
                self.fail('Can\'t assign to special loop variable '
                          'in for-loop target', name.lineno)

        if node.else_:
            iteration_indicator = self.temporary_identifier()
            self.writeline('%s = 1' % iteration_indicator)

        self.writeline(self.environment.is_async and 'async for ' or 'for ', node)
        self.visit(node.target, loop_frame)
        if extended_loop:
            if self.environment.is_async:
                self.write(', %s in await make_async_loop_context(' % loop_ref)
            else:
                self.write(', %s in LoopContext(' % loop_ref)
        else:
            self.write(' in ')

        if node.test:
            self.write('%s(' % loop_filter_func)
        if node.recursive:
            self.write('reciter')
        else:
            if self.environment.is_async and not extended_loop:
                self.write('auto_aiter(')
            self.visit(node.iter, frame)
            if self.environment.is_async and not extended_loop:
                self.write(')')
        if node.test:
            self.write(')')

        if node.recursive:
            self.write(', undefined, loop_render_func, depth):')
        else:
            self.write(extended_loop and ', undefined):' or ':')

        self.indent()
        self.enter_frame(loop_frame)

        self.blockvisit(node.body, loop_frame)
        if node.else_:
            self.writeline('%s = 0' % iteration_indicator)
        self.outdent()
        self.leave_frame(loop_frame, with_python_scope=node.recursive
                         and not node.else_)

        if node.else_:
            self.writeline('if %s:' % iteration_indicator)
            self.indent()
            self.enter_frame(else_frame)
            self.blockvisit(node.else_, else_frame)
            self.leave_frame(else_frame)
            self.outdent()

        # if the node was recursive we have to return the buffer contents
        # and start the iteration code
        if node.recursive:
            self.return_buffer_contents(loop_frame)
            self.outdent()
            self.start_write(frame, node)
            if self.environment.is_async:
                self.write('await ')
            self.write('loop(')
            if self.environment.is_async:
                self.write('auto_aiter(')
            self.visit(node.iter, frame)
            if self.environment.is_async:
                self.write(')')
            self.write(', loop)')
            self.end_write(frame)

    def visit_If(self, node, frame):
        if_frame = frame.soft()
        self.writeline('if ', node)
        self.visit(node.test, if_frame)
        self.write(':')
        self.indent()
        self.blockvisit(node.body, if_frame)
        self.outdent()
        for elif_ in node.elif_:
            self.writeline('elif ', elif_)
            self.visit(elif_.test, if_frame)
            self.write(':')
            self.indent()
            self.blockvisit(elif_.body, if_frame)
            self.outdent()
        if node.else_:
            self.writeline('else:')
            self.indent()
            self.blockvisit(node.else_, if_frame)
            self.outdent()

    def visit_Macro(self, node, frame):
        macro_frame, macro_ref = self.macro_body(node, frame)
        self.newline()
        if frame.toplevel:
            if not node.name.startswith('_'):
                self.write('context.exported_vars.add(%r)' % node.name)
            ref = frame.symbols.ref(node.name)
            self.writeline('context.vars[%r] = ' % node.name)
        self.write('%s = ' % frame.symbols.ref(node.name))
        self.macro_def(macro_ref, macro_frame)

    def visit_CallBlock(self, node, frame):
        call_frame, macro_ref = self.macro_body(node, frame)
        self.writeline('caller = ')
        self.macro_def(macro_ref, call_frame)
        self.start_write(frame, node)
        self.visit_Call(node.call, frame, forward_caller=True)
        self.end_write(frame)

    def visit_FilterBlock(self, node, frame):
        filter_frame = frame.inner()
        filter_frame.symbols.analyze_node(node)
        self.enter_frame(filter_frame)
        self.buffer(filter_frame)
        self.blockvisit(node.body, filter_frame)
        self.start_write(frame, node)
        self.visit_Filter(node.filter, filter_frame)
        self.end_write(frame)
        self.leave_frame(filter_frame)

    def visit_With(self, node, frame):
        with_frame = frame.inner()
        with_frame.symbols.analyze_node(node)
        self.enter_frame(with_frame)
        for idx, (target, expr) in enumerate(izip(node.targets, node.values)):
            self.newline()
            self.visit(target, with_frame)
            self.write(' = ')
            self.visit(expr, frame)
        self.blockvisit(node.body, with_frame)
        self.leave_frame(with_frame)

    def visit_ExprStmt(self, node, frame):
        self.newline(node)
        self.visit(node.node, frame)

    def visit_Output(self, node, frame):
        # if we have a known extends statement, we don't output anything
        # if we are in a require_output_check section
        if self.has_known_extends and frame.require_output_check:
            return

        allow_constant_finalize = True
        if self.environment.finalize:
            func = self.environment.finalize
            if getattr(func, 'contextfunction', False) or \
               getattr(func, 'evalcontextfunction', False):
                allow_constant_finalize = False
            elif getattr(func, 'environmentfunction', False):
                finalize = lambda x: text_type(
                    self.environment.finalize(self.environment, x))
            else:
                finalize = lambda x: text_type(self.environment.finalize(x))
        else:
            finalize = text_type

        # if we are inside a frame that requires output checking, we do so
        outdent_later = False
        if frame.require_output_check:
            self.writeline('if parent_template is None:')
            self.indent()
            outdent_later = True

        # try to evaluate as many chunks as possible into a static
        # string at compile time.
        body = []
        for child in node.nodes:
            try:
                if not allow_constant_finalize:
                    raise nodes.Impossible()
                const = child.as_const(frame.eval_ctx)
            except nodes.Impossible:
                body.append(child)
                continue
            # the frame can't be volatile here, becaus otherwise the
            # as_const() function would raise an Impossible exception
            # at that point.
            try:
                if frame.eval_ctx.autoescape:
                    if hasattr(const, '__html__'):
                        const = const.__html__()
                    else:
                        const = escape(const)
                const = finalize(const)
            except Exception:
                # if something goes wrong here we evaluate the node
                # at runtime for easier debugging
                body.append(child)
                continue
            if body and isinstance(body[-1], list):
                body[-1].append(const)
            else:
                body.append([const])

        # if we have less than 3 nodes or a buffer we yield or extend/append
        if len(body) < 3 or frame.buffer is not None:
            if frame.buffer is not None:
                # for one item we append, for more we extend
                if len(body) == 1:
                    self.writeline('%s.append(' % frame.buffer)
                else:
                    self.writeline('%s.extend((' % frame.buffer)
                self.indent()
            for item in body:
                if isinstance(item, list):
                    val = repr(concat(item))
                    if frame.buffer is None:
                        self.writeline('yield ' + val)
                    else:
                        self.writeline(val + ',')
                else:
                    if frame.buffer is None:
                        self.writeline('yield ', item)
                    else:
                        self.newline(item)
                    close = 1
                    if frame.eval_ctx.volatile:
                        self.write('(escape if context.eval_ctx.autoescape'
                                   ' else to_string)(')
                    elif frame.eval_ctx.autoescape:
                        self.write('escape(')
                    else:
                        self.write('to_string(')
                    if self.environment.finalize is not None:
                        self.write('environment.finalize(')
                        if getattr(self.environment.finalize,
                                   "contextfunction", False):
                            self.write('context, ')
                        close += 1
                    self.visit(item, frame)
                    self.write(')' * close)
                    if frame.buffer is not None:
                        self.write(',')
            if frame.buffer is not None:
                # close the open parentheses
                self.outdent()
                self.writeline(len(body) == 1 and ')' or '))')

        # otherwise we create a format string as this is faster in that case
        else:
            format = []
            arguments = []
            for item in body:
                if isinstance(item, list):
                    format.append(concat(item).replace('%', '%%'))
                else:
                    format.append('%s')
                    arguments.append(item)
            self.writeline('yield ')
            self.write(repr(concat(format)) + ' % (')
            self.indent()
            for argument in arguments:
                self.newline(argument)
                close = 0
                if frame.eval_ctx.volatile:
                    self.write('(escape if context.eval_ctx.autoescape else'
                               ' to_string)(')
                    close += 1
                elif frame.eval_ctx.autoescape:
                    self.write('escape(')
                    close += 1
                if self.environment.finalize is not None:
                    self.write('environment.finalize(')
                    if getattr(self.environment.finalize,
                               'contextfunction', False):
                        self.write('context, ')
                    elif getattr(self.environment.finalize,
                               'evalcontextfunction', False):
                        self.write('context.eval_ctx, ')
                    elif getattr(self.environment.finalize,
                               'environmentfunction', False):
                        self.write('environment, ')
                    close += 1
                self.visit(argument, frame)
                self.write(')' * close + ', ')
            self.outdent()
            self.writeline(')')

        if outdent_later:
            self.outdent()

    def visit_Assign(self, node, frame):
        self.push_assign_tracking()
        self.newline(node)
        self.visit(node.target, frame)
        self.write(' = ')
        self.visit(node.node, frame)
        self.pop_assign_tracking(frame)

    def visit_AssignBlock(self, node, frame):
        self.push_assign_tracking()
        block_frame = frame.inner()
        # This is a special case.  Since a set block always captures we
        # will disable output checks.  This way one can use set blocks
        # toplevel even in extended templates.
        block_frame.require_output_check = False
        block_frame.symbols.analyze_node(node)
        self.enter_frame(block_frame)
        self.buffer(block_frame)
        self.blockvisit(node.body, block_frame)
        self.newline(node)
        self.visit(node.target, frame)
        self.write(' = (Markup if context.eval_ctx.autoescape '
                   'else identity)(')
        if node.filter is not None:
            self.visit_Filter(node.filter, block_frame)
        else:
            self.write('concat(%s)' % block_frame.buffer)
        self.write(')')
        self.pop_assign_tracking(frame)
        self.leave_frame(block_frame)

    # -- Expression Visitors

    def visit_Name(self, node, frame):
        if node.ctx == 'store' and frame.toplevel:
            if self._assign_stack:
                self._assign_stack[-1].add(node.name)
        ref = frame.symbols.ref(node.name)

        # If we are looking up a variable we might have to deal with the
        # case where it's undefined.  We can skip that case if the load
        # instruction indicates a parameter which are always defined.
        if node.ctx == 'load':
            load = frame.symbols.find_load(ref)
            if not (load is not None and load[0] == VAR_LOAD_PARAMETER and \
                    not self.parameter_is_undeclared(ref)):
                self.write('(undefined(name=%r) if %s is missing else %s)' %
                           (node.name, ref, ref))
                return

        self.write(ref)

    def visit_NSRef(self, node, frame):
        # NSRefs can only be used to store values; since they use the normal
        # `foo.bar` notation they will be parsed as a normal attribute access
        # when used anywhere but in a `set` context
        ref = frame.symbols.ref(node.name)
        self.writeline('if not isinstance(%s, Namespace):' % ref)
        self.indent()
        self.writeline('raise TemplateRuntimeError(%r)' %
                       'cannot assign attribute on non-namespace object')
        self.outdent()
        self.writeline('%s[%r]' % (ref, node.attr))

    def visit_Const(self, node, frame):
        val = node.as_const(frame.eval_ctx)
        if isinstance(val, float):
            self.write(str(val))
        else:
            self.write(repr(val))

    def visit_TemplateData(self, node, frame):
        try:
            self.write(repr(node.as_const(frame.eval_ctx)))
        except nodes.Impossible:
            self.write('(Markup if context.eval_ctx.autoescape else identity)(%r)'
                       % node.data)

    def visit_Tuple(self, node, frame):
        self.write('(')
        idx = -1
        for idx, item in enumerate(node.items):
            if idx:
                self.write(', ')
            self.visit(item, frame)
        self.write(idx == 0 and ',)' or ')')

    def visit_List(self, node, frame):
        self.write('[')
        for idx, item in enumerate(node.items):
            if idx:
                self.write(', ')
            self.visit(item, frame)
        self.write(']')

    def visit_Dict(self, node, frame):
        self.write('{')
        for idx, item in enumerate(node.items):
            if idx:
                self.write(', ')
            self.visit(item.key, frame)
            self.write(': ')
            self.visit(item.value, frame)
        self.write('}')

    def binop(operator, interceptable=True):
        @optimizeconst
        def visitor(self, node, frame):
            if self.environment.sandboxed and \
               operator in self.environment.intercepted_binops:
                self.write('environment.call_binop(context, %r, ' % operator)
                self.visit(node.left, frame)
                self.write(', ')
                self.visit(node.right, frame)
            else:
                self.write('(')
                self.visit(node.left, frame)
                self.write(' %s ' % operator)
                self.visit(node.right, frame)
            self.write(')')
        return visitor

    def uaop(operator, interceptable=True):
        @optimizeconst
        def visitor(self, node, frame):
            if self.environment.sandboxed and \
               operator in self.environment.intercepted_unops:
                self.write('environment.call_unop(context, %r, ' % operator)
                self.visit(node.node, frame)
            else:
                self.write('(' + operator)
                self.visit(node.node, frame)
            self.write(')')
        return visitor

    visit_Add = binop('+')
    visit_Sub = binop('-')
    visit_Mul = binop('*')
    visit_Div = binop('/')
    visit_FloorDiv = binop('//')
    visit_Pow = binop('**')
    visit_Mod = binop('%')
    visit_And = binop('and', interceptable=False)
    visit_Or = binop('or', interceptable=False)
    visit_Pos = uaop('+')
    visit_Neg = uaop('-')
    visit_Not = uaop('not ', interceptable=False)
    del binop, uaop

    @optimizeconst
    def visit_Concat(self, node, frame):
        if frame.eval_ctx.volatile:
            func_name = '(context.eval_ctx.volatile and' \
                        ' markup_join or unicode_join)'
        elif frame.eval_ctx.autoescape:
            func_name = 'markup_join'
        else:
            func_name = 'unicode_join'
        self.write('%s((' % func_name)
        for arg in node.nodes:
            self.visit(arg, frame)
            self.write(', ')
        self.write('))')

    @optimizeconst
    def visit_Compare(self, node, frame):
        self.visit(node.expr, frame)
        for op in node.ops:
            self.visit(op, frame)

    def visit_Operand(self, node, frame):
        self.write(' %s ' % operators[node.op])
        self.visit(node.expr, frame)

    @optimizeconst
    def visit_Getattr(self, node, frame):
        self.write('environment.getattr(')
        self.visit(node.node, frame)
        self.write(', %r)' % node.attr)

    @optimizeconst
    def visit_Getitem(self, node, frame):
        # slices bypass the environment getitem method.
        if isinstance(node.arg, nodes.Slice):
            self.visit(node.node, frame)
            self.write('[')
            self.visit(node.arg, frame)
            self.write(']')
        else:
            self.write('environment.getitem(')
            self.visit(node.node, frame)
            self.write(', ')
            self.visit(node.arg, frame)
            self.write(')')

    def visit_Slice(self, node, frame):
        if node.start is not None:
            self.visit(node.start, frame)
        self.write(':')
        if node.stop is not None:
            self.visit(node.stop, frame)
        if node.step is not None:
            self.write(':')
            self.visit(node.step, frame)

    @optimizeconst
    def visit_Filter(self, node, frame):
        if self.environment.is_async:
            self.write('await auto_await(')
        self.write(self.filters[node.name] + '(')
        func = self.environment.filters.get(node.name)
        if func is None:
            self.fail('no filter named %r' % node.name, node.lineno)
        if getattr(func, 'contextfilter', False):
            self.write('context, ')
        elif getattr(func, 'evalcontextfilter', False):
            self.write('context.eval_ctx, ')
        elif getattr(func, 'environmentfilter', False):
            self.write('environment, ')

        # if the filter node is None we are inside a filter block
        # and want to write to the current buffer
        if node.node is not None:
            self.visit(node.node, frame)
        elif frame.eval_ctx.volatile:
            self.write('(context.eval_ctx.autoescape and'
                       ' Markup(concat(%s)) or concat(%s))' %
                       (frame.buffer, frame.buffer))
        elif frame.eval_ctx.autoescape:
            self.write('Markup(concat(%s))' % frame.buffer)
        else:
            self.write('concat(%s)' % frame.buffer)
        self.signature(node, frame)
        self.write(')')
        if self.environment.is_async:
            self.write(')')

    @optimizeconst
    def visit_Test(self, node, frame):
        self.write(self.tests[node.name] + '(')
        if node.name not in self.environment.tests:
            self.fail('no test named %r' % node.name, node.lineno)
        self.visit(node.node, frame)
        self.signature(node, frame)
        self.write(')')

    @optimizeconst
    def visit_CondExpr(self, node, frame):
        def write_expr2():
            if node.expr2 is not None:
                return self.visit(node.expr2, frame)
            self.write('undefined(%r)' % ('the inline if-'
                       'expression on %s evaluated to false and '
                       'no else section was defined.' % self.position(node)))

        self.write('(')
        self.visit(node.expr1, frame)
        self.write(' if ')
        self.visit(node.test, frame)
        self.write(' else ')
        write_expr2()
        self.write(')')

    @optimizeconst
    def visit_Call(self, node, frame, forward_caller=False):
        if self.environment.is_async:
            self.write('await auto_await(')
        if self.environment.sandboxed:
            self.write('environment.call(context, ')
        else:
            self.write('context.call(')
        self.visit(node.node, frame)
        extra_kwargs = forward_caller and {'caller': 'caller'} or None
        self.signature(node, frame, extra_kwargs)
        self.write(')')
        if self.environment.is_async:
            self.write(')')

    def visit_Keyword(self, node, frame):
        self.write(node.key + '=')
        self.visit(node.value, frame)

    # -- Unused nodes for extensions

    def visit_MarkSafe(self, node, frame):
        self.write('Markup(')
        self.visit(node.expr, frame)
        self.write(')')

    def visit_MarkSafeIfAutoescape(self, node, frame):
        self.write('(context.eval_ctx.autoescape and Markup or identity)(')
        self.visit(node.expr, frame)
        self.write(')')

    def visit_EnvironmentAttribute(self, node, frame):
        self.write('environment.' + node.name)

    def visit_ExtensionAttribute(self, node, frame):
        self.write('environment.extensions[%r].%s' % (node.identifier, node.name))

    def visit_ImportedName(self, node, frame):
        self.write(self.import_aliases[node.importname])

    def visit_InternalName(self, node, frame):
        self.write(node.name)

    def visit_ContextReference(self, node, frame):
        self.write('context')

    def visit_Continue(self, node, frame):
        self.writeline('continue', node)

    def visit_Break(self, node, frame):
        self.writeline('break', node)

    def visit_Scope(self, node, frame):
        scope_frame = frame.inner()
        scope_frame.symbols.analyze_node(node)
        self.enter_frame(scope_frame)
        self.blockvisit(node.body, scope_frame)
        self.leave_frame(scope_frame)

    def visit_OverlayScope(self, node, frame):
        ctx = self.temporary_identifier()
        self.writeline('%s = %s' % (ctx, self.derive_context(frame)))
        self.writeline('%s.vars = ' % ctx)
        self.visit(node.context, frame)
        self.push_context_reference(ctx)

        scope_frame = frame.inner(isolated=True)
        scope_frame.symbols.analyze_node(node)
        self.enter_frame(scope_frame)
        self.blockvisit(node.body, scope_frame)
        self.leave_frame(scope_frame)
        self.pop_context_reference()

    def visit_EvalContextModifier(self, node, frame):
        for keyword in node.options:
            self.writeline('context.eval_ctx.%s = ' % keyword.key)
            self.visit(keyword.value, frame)
            try:
                val = keyword.value.as_const(frame.eval_ctx)
            except nodes.Impossible:
                frame.eval_ctx.volatile = True
            else:
                setattr(frame.eval_ctx, keyword.key, val)

    def visit_ScopedEvalContextModifier(self, node, frame):
        old_ctx_name = self.temporary_identifier()
        saved_ctx = frame.eval_ctx.save()
        self.writeline('%s = context.eval_ctx.save()' % old_ctx_name)
        self.visit_EvalContextModifier(node, frame)
        for child in node.body:
            self.visit(child, frame)
        frame.eval_ctx.revert(saved_ctx)
        self.writeline('context.eval_ctx.revert(%s)' % old_ctx_name)

Youez - 2016 - github.com/yon3zu
LinuXploit