Struct Guard

pub struct Guard {
    pub name: String,
    /* private fields */
}

A guard condition for a transition

Fields

name: String

The name of this guard

Implementations

impl Guard

pub fn new<F>(name: impl Into<String>, predicate: F) -> Self

where F: Fn(&Context, &Event) -> bool + Send + Sync + 'static,

Create a new guard with a name and predicate function

pub fn named(name: impl Into<String>) -> Self

Create a new guard with a name only (for serialization)

pub fn evaluate(&self, context: &Context, event: &Event) -> bool

Evaluate the guard against a context and event

Trait Implementations

impl Clone for Guard

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Guard

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Guard

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Guard

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

Formats the value using the given formatter.

impl IntoGuard for Guard

fn into_guard(self) -> Guard

Convert into a guard

impl Serialize for Guard

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

where __S: Serializer,

Serialize this value into the given Serde serializer.