Author: Romain Guillebert <romain...@gmail.com>
Branch: py3k
Changeset: r51447:6face22d8492
Date: 2012-01-18 14:11 +0100
http://bitbucket.org/pypy/pypy/changeset/6face22d8492/
Log: Implement the UNPACK_EX bytecode which is used by py3k's new tuple
unpacking
diff --git a/pypy/interpreter/pyopcode.py b/pypy/interpreter/pyopcode.py
--- a/pypy/interpreter/pyopcode.py
+++ b/pypy/interpreter/pyopcode.py
@@ -582,7 +582,25 @@
self.pushrevvalues(itemcount, items)
def UNPACK_EX(self, oparg, next_instr):
- raise NotImplementedError
+ left = oparg & 0xFF
+ right = (oparg & 0xFF00) >> 8
+ w_iterable = self.popvalue()
+
+ items = self.space.fixedview(w_iterable)
+ itemcount = len(items)
+
+ i = itemcount - 1
+ while i >= itemcount-right:
+ self.pushvalue(items[i])
+ i -= 1
+
+ self.pushvalue(self.space.newlist(items[left:itemcount-right]))
+
+ i = left - 1
+ while i >= 0:
+ self.pushvalue(items[i])
+ i -= 1
+
def STORE_ATTR(self, nameindex, next_instr):
"obj.attributename = newvalue"
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