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Creator

pczt::roles::creator

Struct Creator 

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pub struct Creator { /* private fields */ }

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impl Creator

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pub fn new( consensus_branch_id: u32, expiry_height: u32, coin_type: u32, sapling_anchor: Option<[u8; 32]>, orchard_anchor: Option<[u8; 32]>, ) -> Result<Self, Error>

Creates a new PCZT for the given consensus branch ID.

The transaction version is implied by the consensus branch ID: the v6 transaction format from NU6.3 onward, and the v5 format for earlier upgrades. For v5 transactions, sapling_anchor and orchard_anchor must both be Option::Some. For V6 and later transactions, either anchor may be Option::None and restored later.

§Errors

Returns Error::UnknownConsensusBranchId if consensus_branch_id is not a recognized branch ID, or Error::UnsupportedConsensusBranchId if it predates the v5 transaction format.

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pub fn with_fallback_lock_time(self, fallback: u32) -> Self

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pub fn with_orchard_flags(self, orchard_flags: Flags) -> Result<Self, Error>

Available on crate feature orchard only.

Sets the Orchard flags for the PCZT.

The flags are validated against, and encoded under, the Orchard bundle version implied by the consensus branch ID passed to Creator::new (which also fixes the note-plaintext version).

§Errors

Returns Error::UnrepresentableOrchardFlags if flags cannot be encoded under that bundle version (e.g. cross-address-enabled flags under a post-NU6.3 Orchard version, or cross-address-disabled flags under a pre-NU6.3 Orchard version).

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pub fn with_ironwood_anchor( self, ironwood_anchor: [u8; 32], ) -> Result<Self, Error>

Sets the Ironwood anchor for the PCZT.

§Errors

Returns Error::IronwoodNotSupported if the transaction version implied by the consensus branch ID passed to Creator::new does not carry an Ironwood bundle.

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pub fn with_ironwood_flags(self, ironwood_flags: Flags) -> Result<Self, Error>

Available on crate feature orchard only.

Sets the Ironwood flags for the PCZT.

§Errors

Returns Error::IronwoodNotSupported if the transaction version implied by the consensus branch ID passed to Creator::new does not carry an Ironwood bundle, or Error::UnrepresentableOrchardFlags if flags cannot be encoded under the Ironwood bundle version.

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pub fn build(self) -> Result<Pczt, Error>

Builds the initial PCZT.

§Errors

Returns Error::AnchorRequiredForV5 if this Creator describes a v5 transaction and either the Sapling anchor is missing from a bundle with spends, or the Orchard anchor is missing from a bundle with actions.

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pub fn build_from_parts<P: Parameters>(parts: PcztParts<P>) -> Option<Pczt>

Available on crate feature zcp-builder only.

Builds a PCZT from the output of a Builder.

Returns None if the TxVersion is incompatible with PCZTs.

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