Enum tari_crypto::script::Opcode

pub enum Opcode {
    PushHash(Box<HashValue>),
    PushZero,
    HashBlake256,
    Return,
    Drop,
    Dup,
    RevRot,
    Add,
    Sub,
    CheckSig,
    CheckSigVerify,
    Equal,
    EqualVerify,
}

Variants

PushHash(Box<HashValue>)

Push the associated 32-byte value onto the stack

PushZero

Push a zero onto the stack

HashBlake256

Hash to top stack element with the Blake256 hash function and push the result to the stack

Return

Fail the script immediately. (Must be executed.)

Drop

Drops the top stack item

Dup

Duplicates the top stack item

RevRot

Reverse rotation. The top stack item moves into 3rd place, abc => bca

Add

Pop two items and push their sum

Sub

Pop two items and push the second minus the top

CheckSig

Pop the public key and then the signature. If the signature signs the script, push 0 to the stack, otherwise push 1

CheckSigVerify

As for CheckSig, but aborts immediately if the signature is invalid. As opposed to Bitcoin, it pushes a zero to the stack if successful

Equal

Pushes 0, if the inputs are exactly equal, 1 otherwise

EqualVerify

Pushes 0, if the inputs are exactly equal, aborts otherwise

Implementations

impl Opcode

pub fn read_next(bytes: &[u8]) -> Option<(Opcode, &[u8])>

Take a byte slice and read the next opcode from it, including any associated data. read_next returns a tuple of the deserialised opcode, and an updated slice that has the Opcode and data removed.

pub fn to_bytes<'a>(&self, array: &'a mut Vec<u8>) -> &'a [u8]

Convert an opcode into its binary representation and append it to the array. The function returns the byte slice that matches the opcode as a convenience

Trait Implementations

impl Clone for Opcode

fn clone(&self) -> Opcode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Opcode

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

Formats the value using the given formatter.

impl Display for Opcode

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

Formats the value using the given formatter.

impl Eq for Opcode

impl PartialEq<Opcode> for Opcode

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Opcode) -> bool

This method tests for !=.

impl StructuralEq for Opcode

impl StructuralPartialEq for Opcode