Struct ExternalNode 

pub struct ExternalNode { /* private fields */ }

Node for referencing procedures not present in a given MastForest (hence “external”).

External nodes can be used to verify the integrity of a program’s hash while keeping parts of the program secret. They also allow a program to refer to a well-known procedure that was not compiled with the program (e.g. a procedure in the standard library).

The hash of an external node is the hash of the procedure it represents, such that an external node can be swapped with the actual subtree that it represents without changing the MAST root.

Implementations

impl ExternalNode

pub fn new(procedure_hash: Word) -> Self

Returns a new ExternalNode instantiated with the specified procedure hash.

impl ExternalNode

pub fn digest(&self) -> Word

Returns the commitment to the MAST node referenced by this external node.

pub fn before_enter(&self) -> &[DecoratorId]

Returns the decorators to be executed before this node is executed.

pub fn after_exit(&self) -> &[DecoratorId]

Returns the decorators to be executed after this node is executed.

impl ExternalNode

Mutators

pub fn append_before_enter(&mut self, decorator_ids: &[DecoratorId])

Sets the list of decorators to be executed before this node.

pub fn append_after_exit(&mut self, decorator_ids: &[DecoratorId])

Sets the list of decorators to be executed after this node.

pub fn remove_decorators(&mut self)

Removes all decorators from this node.

Trait Implementations

impl Clone for ExternalNode

fn clone(&self) -> ExternalNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExternalNode

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

Formats the value using the given formatter.

impl MastNodeExt for ExternalNode

fn decorators(&self) -> impl Iterator<Item = (usize, DecoratorId)>

The list of decorators tied to this node, along with their associated index.

fn get_assembly_op<'m>( &self, mast_forest: &'m MastForest, target_op_idx: Option<usize>, ) -> Option<&'m AssemblyOp>

Returns the AssemblyOp associated with this node and operation (if provided), if any.

impl PartialEq for ExternalNode

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for ExternalNode

impl StructuralPartialEq for ExternalNode