Enum UnderflowIO

pub enum UnderflowIO {
    Read(BFieldElement),
    Write(BFieldElement),
}

Indicates changes to the op-stack underflow memory.

Variants

Read(BFieldElement)

Write(BFieldElement)

Implementations

impl UnderflowIO

pub fn canonicalize_sequence(sequence: &mut Vec<Self>)

Remove spurious read/write sequences arising from temporary stack changes.

For example, the sequence [Read(5), Write(5), Read(7)] can be replaced with [Read(7)]. Similarly, the sequence [Write(5), Write(3), Read(3), Read(5), Write(7)] can be replaced with [Write(7)].

pub fn is_uniform_sequence(sequence: &[Self]) -> bool

Whether the sequence of underflow IOs consists of either only reads or only writes.

pub fn is_writing_sequence(sequence: &[Self]) -> bool

Whether the sequence of underflow IOs consists of only writes.

pub fn is_reading_sequence(sequence: &[Self]) -> bool

Whether the sequence of underflow IOs consists of only reads.

pub fn shrinks_stack(&self) -> bool

pub fn grows_stack(&self) -> bool

pub fn payload(self) -> BFieldElement

Trait Implementations

impl<'arbitrary> Arbitrary<'arbitrary> for UnderflowIO

fn arbitrary(u: &mut Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest(u: Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl Clone for UnderflowIO

fn clone(&self) -> UnderflowIO

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UnderflowIO

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for UnderflowIO

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl GetSize for UnderflowIO

fn get_heap_size(&self) -> usize

Determines how many bytes this object occupies inside the heap.

fn get_stack_size() -> usize

Determines how may bytes this object occupies inside the stack.

fn get_size(&self) -> usize

Determines the total size of the object.

impl Hash for UnderflowIO

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for UnderflowIO

fn eq(&self, other: &UnderflowIO) -> 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 Serialize for UnderflowIO

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for UnderflowIO

impl Eq for UnderflowIO

impl StructuralPartialEq for UnderflowIO