Struct OutputDecl 

pub struct OutputDecl {
    pub name: String,
    pub description: Option<String>,
    pub kind: ValueType,
    pub validate: Option<String>,
}

Declares a named output that a native StepKind::Subprocess step may emit at runtime (W201-F4).

At runtime the runner injects a $YAH_OUTPUTS environment variable pointing at a temporary file. Steps write KEY=VALUE\n lines to that file; the runner reads them back after the step exits and stores the collected values in StepStatus::outputs. Sibling steps can then reference values as ${{ steps.<step-name>.outputs.<key> }} in their argv or env fields.

The name field is advisory — undeclared keys written to $YAH_OUTPUTS are captured too. Declaring outputs explicitly helps with documentation and, once the W200 expression engine (R487-F2) lands, with type-checked expression validation.

Fields

name: String

description: Option<String>

kind: ValueType

W209: declared value type. The runner type-checks the captured value against this shape before letting it reach any [[bind]] whose from references this output. Defaults to string (i.e. accept anything non-empty) for backwards compatibility with R488-F4 outputs declared without a type key.

validate: Option<String>

Optional override regex for the type’s built-in validator (W209). Authors rarely need this — the built-in shape regex is right by construction for blake3-hex, semver, oci-digest, etc.

Trait Implementations

impl Clone for OutputDecl

fn clone(&self) -> OutputDecl

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OutputDecl

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OutputDecl

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for OutputDecl

impl PartialEq for OutputDecl

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for OutputDecl

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 OutputDecl