Direct follow-up to PR #2154 (which annotated the free-function half
of bip-0352/bitcoin_utils.py) and 2f7117c ("BIP352: fix Any typing").
The four classes in this file — COutPoint, VinInfo, CScriptWitness,
and CTxInWitness — still had unannotated `__init__`, `serialize`,
`deserialize`, and `is_null` methods. mypy could not flow types
through the surrounding reference.py code that constructs and passes
these objects.
Annotate every method on all four classes:
- COutPoint: __init__ (hash, n), serialize -> bytes, deserialize -> None
- VinInfo: __init__ (typed Optional defaults for the three
construct-on-None fields)
- CScriptWitness: __init__ -> None, is_null -> bool, plus an inline
stack: List[bytes] declaration matching what the
rest of the file already assumes
- CTxInWitness: __init__ -> None, deserialize -> "CTxInWitness"
(forward ref since it returns self), is_null -> bool
Adds Optional to the existing typing import (List was already added
by #2154). No behavior changes.
Verified: mypy --ignore-missing-imports ./bip-0352/bitcoin_utils.py
reports "Success: no issues found in 1 source file"; round-trip
smoke tests on COutPoint serialize/deserialize, CScriptWitness
is_null with empty + non-empty stack, CTxInWitness deserialize
returning self, and VinInfo default-construction all match the
pre-change behavior.
1259a23acc
