Merge pull request #844 from zcash/temporary-zcashd-parse-sapling
zcash_primitives: Changes needed for `zcashd` Sapling oxidation
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commit
36d7222685
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@ -6,6 +6,15 @@ and this library adheres to Rust's notion of
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[Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## [Unreleased]
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### Added
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- `zcash_primitives::transaction`:
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- `Transaction::temporary_zcashd_read_v5_sapling`
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- `Transaction::temporary_zcashd_write_v5_sapling`
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- Implementations of `memuse::DynamicUsage` for the following types:
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- `zcash_primitives::transaction::components::sapling`:
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- `Bundle<Authorized>`
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- `SpendDescription<Authorized>`
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### Changed
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- MSRV is now 1.65.0.
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- Bumped dependencies to `secp256k1 0.26`, `hdwallet 0.4`.
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@ -192,6 +192,24 @@ impl<A: Authorization> Bundle<A> {
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}
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}
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impl DynamicUsage for Bundle<Authorized> {
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fn dynamic_usage(&self) -> usize {
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self.shielded_spends.dynamic_usage() + self.shielded_outputs.dynamic_usage()
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}
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fn dynamic_usage_bounds(&self) -> (usize, Option<usize>) {
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let bounds = (
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self.shielded_spends.dynamic_usage_bounds(),
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self.shielded_outputs.dynamic_usage_bounds(),
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);
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(
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bounds.0 .0 + bounds.1 .0,
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bounds.0 .1.zip(bounds.1 .1).map(|(a, b)| a + b),
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)
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}
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}
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#[derive(Clone)]
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pub struct SpendDescription<A: Authorization> {
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cv: ValueCommitment,
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@ -263,6 +281,16 @@ impl<A: Authorization> SpendDescription<A> {
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}
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}
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impl DynamicUsage for SpendDescription<Authorized> {
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fn dynamic_usage(&self) -> usize {
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self.zkproof.dynamic_usage()
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}
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fn dynamic_usage_bounds(&self) -> (usize, Option<usize>) {
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self.zkproof.dynamic_usage_bounds()
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}
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}
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/// Consensus rules (§4.4) & (§4.5):
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/// - Canonical encoding is enforced here.
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/// - "Not small order" is enforced here.
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@ -730,6 +730,13 @@ impl Transaction {
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Ok((consensus_branch_id, lock_time, expiry_height))
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}
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#[cfg(feature = "temporary-zcashd")]
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pub fn temporary_zcashd_read_v5_sapling<R: Read>(
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reader: R,
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) -> io::Result<Option<sapling::Bundle<sapling::Authorized>>> {
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Self::read_v5_sapling(reader)
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}
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#[allow(clippy::redundant_closure)]
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fn read_v5_sapling<R: Read>(
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mut reader: R,
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@ -917,8 +924,23 @@ impl Transaction {
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Ok(())
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}
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pub fn write_v5_sapling<W: Write>(&self, mut writer: W) -> io::Result<()> {
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if let Some(bundle) = &self.sapling_bundle {
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#[cfg(feature = "temporary-zcashd")]
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pub fn temporary_zcashd_write_v5_sapling<W: Write>(
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sapling_bundle: Option<&sapling::Bundle<sapling::Authorized>>,
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writer: W,
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) -> io::Result<()> {
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Self::write_v5_sapling_inner(sapling_bundle, writer)
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}
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pub fn write_v5_sapling<W: Write>(&self, writer: W) -> io::Result<()> {
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Self::write_v5_sapling_inner(self.sapling_bundle.as_ref(), writer)
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}
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fn write_v5_sapling_inner<W: Write>(
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sapling_bundle: Option<&sapling::Bundle<sapling::Authorized>>,
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mut writer: W,
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) -> io::Result<()> {
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if let Some(bundle) = sapling_bundle {
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Vector::write(&mut writer, bundle.shielded_spends(), |w, e| {
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e.write_v5_without_witness_data(w)
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})?;
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