Modify BundleType to exclude the anchor & allow no bundle to be produced.#409
Modify BundleType to exclude the anchor & allow no bundle to be produced.#409
BundleType to exclude the anchor & allow no bundle to be produced.#409Conversation
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Additional details and impacted files@@ Coverage Diff @@
## main #409 +/- ##
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+ Coverage 80.98% 80.99% +0.01%
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Files 31 31
Lines 3139 3146 +7
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+ Hits 2542 2548 +6
- Misses 597 598 +1 ☔ View full report in Codecov by Sentry. |
…duced. This adds a flag to `BundleType` that, when set, requires a dummy-only bundle to be produced even if no spends or outputs are added to the builder, and when unset results in standard padding.
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| /// This anchor does not correspond to any valid anchor for a spend, so it | ||
| /// may only be used for coinbase bundles or in circumstances where Orchard | ||
| /// functionality is not active. |
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It is entirely valid to use the empty tree in regular bundles. Doing so is equivalent to setting enable_spends = false - it proves publicly that the Orchard bundle spends no notes (but may still have real outputs). I think this comment is fine however because callers should reach for enable_spends in this case, rather than the empty anchor.
| let mut builder = Builder::new(BundleType::Transactional(Flags::SPENDS_DISABLED, anchor)); | ||
| let mut builder = Builder::new( | ||
| BundleType::Transactional { | ||
| flags: Flags::SPENDS_DISABLED, |
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Nit: this publicly announces that spends are disabled, which in a real shielding bundle may be highly undesirable. This doesn't matter in a test, but we should avoid doing this in examples that downstream crate users are likely to look at for reference.
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