Store an object in the memo.
(self, obj)
| 489 | self.framer.end_framing() |
| 490 | |
| 491 | def memoize(self, obj): |
| 492 | """Store an object in the memo.""" |
| 493 | |
| 494 | # The Pickler memo is a dictionary mapping object ids to 2-tuples |
| 495 | # that contain the Unpickler memo key and the object being memoized. |
| 496 | # The memo key is written to the pickle and will become |
| 497 | # the key in the Unpickler's memo. The object is stored in the |
| 498 | # Pickler memo so that transient objects are kept alive during |
| 499 | # pickling. |
| 500 | |
| 501 | # The use of the Unpickler memo length as the memo key is just a |
| 502 | # convention. The only requirement is that the memo values be unique. |
| 503 | # But there appears no advantage to any other scheme, and this |
| 504 | # scheme allows the Unpickler memo to be implemented as a plain (but |
| 505 | # growable) array, indexed by memo key. |
| 506 | if self.fast: |
| 507 | return |
| 508 | assert id(obj) not in self.memo |
| 509 | idx = len(self.memo) |
| 510 | self.write(self.put(idx)) |
| 511 | self.memo[id(obj)] = idx, obj |
| 512 | |
| 513 | # Return a PUT (BINPUT, LONG_BINPUT) opcode string, with argument i. |
| 514 | def put(self, idx): |
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