[Python-Dev] Anonymous blocks: Thunks or iterators?
sabbey at u.washington.edu
Fri Apr 29 20:10:42 CEST 2005
Jim Jewett wrote:
> The only members that need special attention are (f_code, f_lasti)
> and possibly (f_blockstack, f_iblock).
You don't even need to take care of f_code. The thunk and its surrounding
function can share the same code. The thunk gets compiled into the
function the same way the body of a for loop would.
> (f_code, f_lasti) would need to be replaced with a stack of pairs.
> Finishing a code string would mean popping this stack, rather
> than popping the whole frame.
There doesn't need to be a stack; each thunk can store its own f_lasti.
One also needs to store f_back, and, to avoid exception weirdness,
In this way, calling the thunk is much like resuming a generator.
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