Trait ConstSource 

pub trait ConstSource: Sized + 'static {
    const SLOT: SlotType;

    // Required method
    fn extract(arg: &ConstArg) -> Self;
}

ConstArg → typed-Rust-value bridge for owned types in Const<T> position.

Borrow shapes (Const<&str>) are handled by the macro at codegen — it stores String via ConstSource for String and emits Const(self.field.as_str()) at the eval call site to satisfy the operator-side Const<&str> signature.

Required Associated Constants

const SLOT: SlotType

The slot type the constant occupies.

Required Methods

fn extract(arg: &ConstArg) -> Self

The value from a build-time constant argument.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl ConstSource for String

const SLOT: SlotType = SlotType::ConstStr

fn extract(arg: &ConstArg) -> Self

impl ConstSource for bool

const SLOT: SlotType = SlotType::ConstU64

fn extract(arg: &ConstArg) -> Self

impl ConstSource for f64

const SLOT: SlotType = SlotType::ConstF64

fn extract(arg: &ConstArg) -> Self

impl ConstSource for u64

const SLOT: SlotType = SlotType::ConstU64

fn extract(arg: &ConstArg) -> Self

impl<C: ConstSource> ConstSource for Vec<C>

SRD-80b Phase C — workload-list const combinator. Used by the macro when it sees Const<Vec<C>> in an operator’s signature (e.g. Const<Vec<u64>>, Const<Vec<String>>). The macro emits one Slot::Const { name, slot_type: ConstVec, .. } for the position and packages the trailing consts[..] slice into a ConstArg::List at build time; this impl walks the list, dispatching C::extract per element.

const SLOT: SlotType = SlotType::ConstVec

fn extract(arg: &ConstArg) -> Self

Implementors