ForceCodeResume

Enum ForceCodeResume 

Source
pub enum ForceCodeResume {
    ReifyDrain {
        saved: ScopeSnapshot,
        then: ReifyResume,
    },
    WrapAsCode,
    IsCodeStaged {
        s1: Rc<Exp>,
    },
}
Expand description

Discriminator for what to do with the Exp produced by a ForceCode continuation. Different callers want to assemble different surrounding constructions from the forced Exp.

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ReifyDrain

We are completing a reifyc-style scope: drain ctx.block into a Let-chain ending in this Exp, restore the snapshot, dispatch the original ReifyResume.

Fields

§saved: ScopeSnapshot

Staging state to restore after draining the block.

§then: ReifyResume

What surrounding staged Exp the Let-chain slots into.

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WrapAsCode

Wrap as Val::Code(exp) and produce Mode::Apply. Used by LiftRef’s non-Code-v1 branch.

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IsCodeStaged

Reflect Exp::IsCode(s1, exp) and produce Mode::Apply. Used by code?’s Code-first-arg branch — the paper lifts a non-Code v2 via force-code before constructing the staged check, so this resume runs after force-coding v2 (which may have driven a lift-Clo η-expansion through the kont stack).

Fields

§s1: Rc<Exp>

The first operand’s code, already forced.

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type Error = <U as TryFrom<T>>::Error

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