Struct DeconSpec 

pub struct DeconSpec {
    pub source: TypeRef,
    pub leaves: Vec<UnfoldLeaf>,
}

The declaration-default decomposition of one deconstructor: its leaf list resolved ONCE from the declaration’s records with normalized inputs (borrowed identity form, no outer shape), so the content is independent of which functions use the declaration and in what order. Stored in Registry::decon_plans; the single source language adapters derive declaration-keyed signature artifacts (e.g. generated callback interfaces) from. Per-function aspects (by_ref, shape, delivery) live on each function’s UnfoldPlan, which points here via UnfoldPlan::decon.

Normalization detail: the identity leaf’s out_ty is always the borrowed &Source form (an owned-return function’s own plan carries owned Source instead) — both resolve to the same projection/class, and adapters reading the spec must tolerate whichever form their type tables resolved.

Fields

source: TypeRef

The decomposed type as first encountered. A reading, so “compare via TypeKey, not syntactically” is the type rather than an instruction: source.key() is the identity and source.spell() is what generated Rust says.

leaves: Vec<UnfoldLeaf>

Flattened leaves in declared record order — names, types, paths, nullability all declaration-fixed.

Trait Implementations

impl Clone for DeconSpec

fn clone(&self) -> DeconSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.