circuits_lib::bridge_circuit::structs

Struct CircuitWitness

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pub struct CircuitWitness(pub Witness);

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§0: Witness

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impl CircuitWitness

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pub fn from(witness: Witness) -> Self

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pub fn inner(&self) -> &Witness

Methods from Deref<Target = Witness>§

pub fn to_vec(&self) -> Vec<Vec<u8>>

Convenience method to create an array of byte-arrays from this witness.

pub fn is_empty(&self) -> bool

Returns true if the witness contains no element.

pub fn iter(&self) -> Iter<'_>

Returns a struct implementing Iterator.

pub fn len(&self) -> usize

Returns the number of elements this witness holds.

pub fn size(&self) -> usize

Returns the number of bytes this witness contributes to a transactions total size.

pub fn clear(&mut self)

Clear the witness.

pub fn push<T>(&mut self, new_element: T)
where T: AsRef<[u8]>,

Push a new element on the witness, requires an allocation.

pub fn push_ecdsa_signature(&mut self, signature: &Signature)

Pushes, as a new element on the witness, an ECDSA signature.

Pushes the DER encoded signature + sighash_type, requires an allocation.

pub fn last(&self) -> Option<&[u8]>

Returns the last element in the witness, if any.

pub fn second_to_last(&self) -> Option<&[u8]>

Returns the second-to-last element in the witness, if any.

pub fn third_to_last(&self) -> Option<&[u8]>

Returns the third-to-last element in the witness, if any.

pub fn nth(&self, index: usize) -> Option<&[u8]>

Return the nth element in the witness, if any

pub fn tapscript(&self) -> Option<&Script>

👎Deprecated: use taproot_leaf_script and check leaf version, if applicable

Get leaf script following BIP341 rules regarding accounting for an annex.

This method is broken: it’s called tapscript but it’s actually returning a leaf script. We’re not going to fix it because someone might be relying on it thinking leaf script and tapscript are the same thing (they are not). Instead, this is deprecated and will be removed in the next breaking release. You need to use taproot_leaf_script and if you intended to use it as leaf script, just access the script field of the returned type. If you intended tapscript specifically you have to check the version first and bail if it’s not LeafVersion::TapScript.

This does not guarantee that this represents a P2TR [Witness]. It merely gets the second to last or third to last element depending on the first byte of the last element being equal to 0x50.

See [Script::is_p2tr] to check whether this is actually a Taproot witness.

pub fn taproot_leaf_script(&self) -> Option<LeafScript<&Script>>

Returns the leaf script with its version but without the merkle proof.

This does not guarantee that this represents a P2TR [Witness]. It merely gets the second to last or third to last element depending on the first byte of the last element being equal to 0x50 and the associated version.

pub fn taproot_control_block(&self) -> Option<&[u8]>

Get the taproot control block following BIP341 rules.

This does not guarantee that this represents a P2TR [Witness]. It merely gets the last or second to last element depending on the first byte of the last element being equal to 0x50.

See [Script::is_p2tr] to check whether this is actually a Taproot witness.

pub fn taproot_annex(&self) -> Option<&[u8]>

Get the taproot annex following BIP341 rules.

This does not guarantee that this represents a P2TR [Witness].

See [Script::is_p2tr] to check whether this is actually a Taproot witness.

pub fn witness_script(&self) -> Option<&Script>

Get the p2wsh witness script following BIP141 rules.

This does not guarantee that this represents a P2WS [Witness]. See Script::is_p2wsh to check whether this is actually a P2WSH witness.

Trait Implementations§

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impl BorshDeserialize for CircuitWitness

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fn deserialize_reader<R: Read>(reader: &mut R) -> Result<Self>

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fn deserialize(buf: &mut &[u8]) -> Result<Self, Error>

Deserializes this instance from a given slice of bytes. Updates the buffer to point at the remaining bytes.
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fn try_from_slice(v: &[u8]) -> Result<Self, Error>

Deserialize this instance from a slice of bytes.
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fn try_from_reader<R>(reader: &mut R) -> Result<Self, Error>
where R: Read,

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impl BorshSerialize for CircuitWitness

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fn serialize<W: Write>(&self, writer: &mut W) -> Result<()>

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impl Clone for CircuitWitness

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fn clone(&self) -> CircuitWitness

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CircuitWitness

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

Formats the value using the given formatter. Read more
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impl Deref for CircuitWitness

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type Target = Witness

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl DerefMut for CircuitWitness

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fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.
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impl From<Witness> for CircuitWitness

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fn from(witness: Witness) -> Self

Converts to this type from the input type.
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impl Hash for CircuitWitness

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for CircuitWitness

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fn eq(&self, other: &CircuitWitness) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for CircuitWitness

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impl StructuralPartialEq for CircuitWitness

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