Enum BackendUsage 

#[non_exhaustive]
pub enum BackendUsage {
    Required,
    SoftwareUnlessNamed,
    Unused,
}

Whether an action needs the backend: field on its step.

Three states, not two: an action can also run without a backend and accept one anyway. Verification is the case that forces the distinction, since a signature check needs only a public key but a validated deployment may require it inside the boundary.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Required

The step must name a backend; omitting it is an error.

SoftwareUnlessNamed

The step runs in software unless it names a backend, which then does the work instead. Naming one changes who performs the operation, not what the step accepts or produces.

Unused

The action never uses a backend; naming one is a mistake worth warning about.

Trait Implementations

impl Clone for BackendUsage

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BackendUsage

impl Debug for BackendUsage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BackendUsage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for BackendUsage

impl Hash for BackendUsage

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 BackendUsage

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for BackendUsage

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for BackendUsage