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Use expect to remove unreachable break.

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This commit is contained in:
Jim Posen 2019-08-19 14:04:41 +02:00
parent 40f768ed60
commit d4b6c0e1a2
1 changed files with 18 additions and 22 deletions
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40
zcash_proofs/src/circuit/pedersen_hash.rs
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@ -72,32 +72,28 @@ where
window_i += 1;
}
match segment_result {
Some(segment_result) => {
// Convert this segment into twisted Edwards form.
let segment_result = segment_result.into_edwards(
cs.namespace(|| format!("conversion of segment {} into edwards", segment_i)),
let segment_result = segment_result.expect(
"bits is not exhausted due to while condition;
thus there must be a segment window;
thus there must be a segment result",
);
// Convert this segment into twisted Edwards form.
let segment_result = segment_result.into_edwards(
cs.namespace(|| format!("conversion of segment {} into edwards", segment_i)),
params,
)?;
match edwards_result {
Some(ref mut edwards_result) => {
*edwards_result = segment_result.add(
cs.namespace(|| format!("addition of segment {} to accumulator", segment_i)),
edwards_result,
params,
)?;
match edwards_result {
Some(ref mut edwards_result) => {
*edwards_result = segment_result.add(
cs.namespace(|| {
format!("addition of segment {} to accumulator", segment_i)
}),
edwards_result,
params,
)?;
}
None => {
edwards_result = Some(segment_result);
}
}
}
None => {
// We didn't process any new bits.
break;
edwards_result = Some(segment_result);
}
}