commit ad3fc44ccb40f2ad33c0d09f5a2dfbd4feb442eb
author Gustavo Niemeyer <gustavo@niemeyer.net> Fri Oct 17 22:13:16 2003 +0000
committer Gustavo Niemeyer <gustavo@niemeyer.net> Fri Oct 17 22:13:16 2003 +0000
tree 929ea71dea18a5ee0c5c862bbb39d37b693209ad
parent 41e2809febd6e09a34adf21beb6d2ae2360fdc46

Implemented non-recursive SRE matching.

Lib/sre_compile.py

diff --git a/Lib/sre_compile.py b/Lib/sre_compile.py
index 8a26a0f..ee0882d 100644
--- a/Lib/sre_compile.py
+++ b/Lib/sre_compile.py
@@ -145,6 +145,19 @@
             else:
                 emit(OPCODES[op])
             emit(av-1)
+        elif op is GROUPREF_EXISTS:
+            emit(OPCODES[op])
+            emit((av[0]-1)*2)
+            skipyes = len(code); emit(0)
+            _compile(code, av[1], flags)
+            if av[2]:
+                emit(OPCODES[JUMP])
+                skipno = len(code); emit(0)
+                code[skipyes] = len(code) - skipyes + 1
+                _compile(code, av[2], flags)
+                code[skipno] = len(code) - skipno
+            else:
+                code[skipyes] = len(code) - skipyes + 1
         else:
             raise ValueError, ("unsupported operand type", op)