Struct NoMessage 

pub struct NoMessage { /* private fields */ }

Execution input for instructions that need no runtime-supplied message.

Unlike (), this type explicitly names the absence of an execution message. Instruction operands and execution effects are independent of this choice. Construct it with NoMessage::new or Default so callers do not depend on its representation.

use vihaco_runtime::{Message, NoMessage};

const INPUT: NoMessage = NoMessage::new();
fn accept_message<M: Message>(_: M) {}
accept_message(INPUT);
assert_eq!(INPUT, NoMessage::default());

Ordinary unit values are not interchangeable with this message:

use vihaco_runtime::NoMessage;
let message: NoMessage = ();

Implementations

impl NoMessage

pub const fn new() -> Self

Construct an empty execution message.

Trait Implementations

impl Clone for NoMessage

fn clone(&self) -> NoMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for NoMessage

impl Debug for NoMessage

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

Formats the value using the given formatter.

impl Default for NoMessage

fn default() -> NoMessage

Returns the “default value” for a type.

impl Eq for NoMessage

impl Hash for NoMessage

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 Message for NoMessage

impl Ord for NoMessage

fn cmp(&self, other: &NoMessage) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for NoMessage

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for NoMessage

fn partial_cmp(&self, other: &NoMessage) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for NoMessage