Author: Jeremy Thurgood <fir...@gmail.com>
Branch: remove-del-from-generatoriterator
Changeset: r68717:050108051e15
Date: 2014-01-17 15:45 +0200
http://bitbucket.org/pypy/pypy/changeset/050108051e15/

Log:    move GeneratorIterator.__del__ to GeneratorIteratorWithDel subclass,
        used for code with the CO_YIELD_INSIDE_TRY flag

diff --git a/pypy/interpreter/generator.py b/pypy/interpreter/generator.py
--- a/pypy/interpreter/generator.py
+++ b/pypy/interpreter/generator.py
@@ -155,20 +155,6 @@
         code_name = self.pycode.co_name
         return space.wrap(code_name)
 
-    def __del__(self):
-        # Only bother enqueuing self to raise an exception if the frame is
-        # still not finished and finally or except blocks are present.
-        self.clear_all_weakrefs()
-        if self.frame is not None:
-            block = self.frame.lastblock
-            while block is not None:
-                if not isinstance(block, LoopBlock):
-                    self.enqueue_for_destruction(self.space,
-                                                 GeneratorIterator.descr_close,
-                                                 "interrupting generator of ")
-                    break
-                block = block.previous
-
     # Results can be either an RPython list of W_Root, or it can be an
     # app-level W_ListObject, which also has an append() method, that's why we
     # generate 2 versions of the function and 2 jit drivers.
@@ -211,3 +197,20 @@
         return unpack_into
     unpack_into = _create_unpack_into()
     unpack_into_w = _create_unpack_into()
+
+
+class GeneratorIteratorWithDel(GeneratorIterator):
+
+    def __del__(self):
+        # Only bother enqueuing self to raise an exception if the frame is
+        # still not finished and finally or except blocks are present.
+        self.clear_all_weakrefs()
+        if self.frame is not None:
+            block = self.frame.lastblock
+            while block is not None:
+                if not isinstance(block, LoopBlock):
+                    self.enqueue_for_destruction(self.space,
+                                                 GeneratorIterator.descr_close,
+                                                 "interrupting generator of ")
+                    break
+                block = block.previous
diff --git a/pypy/interpreter/pycode.py b/pypy/interpreter/pycode.py
--- a/pypy/interpreter/pycode.py
+++ b/pypy/interpreter/pycode.py
@@ -12,7 +12,7 @@
 from pypy.interpreter.gateway import unwrap_spec
 from pypy.interpreter.astcompiler.consts import (
     CO_OPTIMIZED, CO_NEWLOCALS, CO_VARARGS, CO_VARKEYWORDS, CO_NESTED,
-    CO_GENERATOR, CO_KILL_DOCSTRING)
+    CO_GENERATOR, CO_KILL_DOCSTRING, CO_YIELD_INSIDE_TRY)
 from pypy.tool.stdlib_opcode import opcodedesc, HAVE_ARGUMENT
 from rpython.rlib.rarithmetic import intmask
 from rpython.rlib.objectmodel import compute_hash
diff --git a/pypy/interpreter/pyframe.py b/pypy/interpreter/pyframe.py
--- a/pypy/interpreter/pyframe.py
+++ b/pypy/interpreter/pyframe.py
@@ -167,8 +167,12 @@
     def run(self):
         """Start this frame's execution."""
         if self.getcode().co_flags & pycode.CO_GENERATOR:
-            from pypy.interpreter.generator import GeneratorIterator
-            return self.space.wrap(GeneratorIterator(self))
+            if pycode.CO_YIELD_INSIDE_TRY:
+                from pypy.interpreter.generator import GeneratorIteratorWithDel
+                return self.space.wrap(GeneratorIteratorWithDel(self))
+            else:
+                from pypy.interpreter.generator import GeneratorIterator
+                return self.space.wrap(GeneratorIterator(self))
         else:
             return self.execute_frame()
 
diff --git a/pypy/module/_pickle_support/maker.py 
b/pypy/module/_pickle_support/maker.py
--- a/pypy/module/_pickle_support/maker.py
+++ b/pypy/module/_pickle_support/maker.py
@@ -5,7 +5,7 @@
 from pypy.interpreter.module import Module
 from pypy.interpreter.pyframe import PyFrame
 from pypy.interpreter.pytraceback import PyTraceback
-from pypy.interpreter.generator import GeneratorIterator
+from pypy.interpreter.generator import GeneratorIteratorWithDel
 from rpython.rlib.objectmodel import instantiate
 from pypy.interpreter.gateway import unwrap_spec
 from pypy.objspace.std.iterobject import W_SeqIterObject, 
W_ReverseSeqIterObject
@@ -60,7 +60,7 @@
     return space.wrap(tb)
 
 def generator_new(space):
-    new_generator = instantiate(GeneratorIterator)
+    new_generator = instantiate(GeneratorIteratorWithDel)
     return space.wrap(new_generator)
 
 @unwrap_spec(current=int, remaining=int, step=int)
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