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ReceiverRequirements

zcash_client_backend::keys

Struct ReceiverRequirements 

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pub struct ReceiverRequirements { /* private fields */ }
Expand description

Specification for how a unified address should be generated from a unified viewing key.

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impl ReceiverRequirements

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pub const ALLOW_ALL: ReceiverRequirements

Constructs a new unified address request that allows a receiver of each type.

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pub const SHIELDED: ReceiverRequirements

Constructs a new unified address request that allows only shielded receivers.

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pub const ORCHARD: ReceiverRequirements

Constructs a new unified address request that requires an Orchard receiver, and no others.

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pub const TRANSPARENT_ONLY: ReceiverRequirements

Constructs a new unified address request that requires a transparent P2PKH receiver, and no others.

An address satisfying these requirements has no shielded receiver, and so is representable only as a ZIP 316 Revision 2 transparent-including (tu) unified address. Consequently this is the appropriate request only for a key that has no shielded item; requesting it from a key that has one produces an address that needlessly discards the recipient’s shielded receiving capability. It is not reachable via Self::new or Self::unsafe_new for that reason.

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pub fn new( orchard: ReceiverRequirement, sapling: ReceiverRequirement, p2pkh: ReceiverRequirement, ) -> Result<ReceiverRequirements, ReceiverRequirementError>

Construct a new unified address request from its constituent parts.

Returns an error if the resulting unified address would not include at least one shielded receiver. A unified address containing only a transparent receiver cannot be requested this way; use Self::TRANSPARENT_ONLY, which is applicable only to keys that have no shielded item at all.

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pub fn intersect( &self, other: &ReceiverRequirements, ) -> Result<ReceiverRequirements, ReceiverRequirementError>

Constructs a new unified address request that includes only the receivers that are allowed both in itself and a given other request. Returns an error if requirements are incompatible or if no shielded receiver type is allowed.

Intersection preserves Omit, so its result permits no shielded receiver only if at least one of the operands already permitted none. In that case the result is no less honest than the operand it came from and is returned; otherwise the shielded-receiver requirement of Self::new applies.

This operation is commutative and idempotent, but it is not associative. The rule above inspects the operands and not only the meet, so an intermediate result that permits no shielded receiver can be rejected under one bracketing and admitted under another.

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pub const fn unsafe_new( orchard: ReceiverRequirement, sapling: ReceiverRequirement, p2pkh: ReceiverRequirement, ) -> ReceiverRequirements

Construct a new unified address request from its constituent parts.

Panics: at least one of orchard or sapling must be allowed. Use Self::TRANSPARENT_ONLY to describe a key that has no shielded item.

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pub fn orchard(&self) -> ReceiverRequirement

Returns the ReceiverRequirement for inclusion of an Orchard receiver.

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pub fn sapling(&self) -> ReceiverRequirement

Returns the ReceiverRequirement for inclusion of a Sapling receiver.

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pub fn p2pkh(&self) -> ReceiverRequirement

Returns the ReceiverRequirement for inclusion of a P2PKH receiver.

Trait Implementations§

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impl Clone for ReceiverRequirements

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fn clone(&self) -> ReceiverRequirements

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for ReceiverRequirements

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impl Debug for ReceiverRequirements

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

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