Enum SlotSource 

pub enum SlotSource {
    DirectPlaceholder,
    DependencyOf {
        component: String,
        bound_at_slot: String,
        required_slot: String,
    },
}

Why a slot needs to be bound. Threaded into CompileError::UnboundSlot so the diagnostic can point at the originating location.

Variants

DirectPlaceholder

At least one NodeProto in the IR references a role via (required_trait, slot_id) metadata but no BindingSpec entry of that role exists. The user forgot the .bind_<role>::<T>("…") for a placeholder field their Module body actually uses.

DependencyOf

The slot is required because the named concrete declares #[depends(<role> = "<slot>")], but no matching binding exists. Diagnostic: “backend slot ‘compute’ is required by CountingIndex bound at slot ‘primary_index’ but isn’t bound.”

Fields

component: String

TYPE_NAME of the concrete with the dep.

bound_at_slot: String

Slot the dep-declaring concrete was bound at.

required_slot: String

Slot name the dependency references.

Trait Implementations

impl Clone for SlotSource

fn clone(&self) -> SlotSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SlotSource

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

Formats the value using the given formatter.