Struct DelayedCutSet 

pub struct DelayedCutSet {
    pub cuts: HashMap<usize, Directive>,
    pub boundary_nodes: Vec<usize>,
    pub already_isolated: Vec<usize>,
}

The set of edges a delayed-coupling formation pass must CUT before grouping, plus the tap-mouth boundary nodes each cut exposes as a stage port.

This is the Phase-2a consumer of the Phase-1 BoundaryPolicy rules: it DERIVES (does not hand-list) the passive edges that bridge a feedback DETECTOR front-end (whose control electrode is reached from the output side — a BoundaryPolicy::DelayedSense sink) to the forward audio network. Cutting those tap-mouth edges de-fuses the detector group from the forward chain so the forward solve stays causal (the detector is sensed one sample late by a later phase; 2a only de-fuses).

cuts is keyed by index into graph.edges; the Directive records WHY the edge was cut (NonMergeCut for a sense tap). boundary_nodes are the cut edges’ endpoints — the tap-mouth nodes that each become a stage port.

Fields

cuts: HashMap<usize, Directive>

Edge index (into graph.edges) → the directive that justifies the cut.

boundary_nodes: Vec<usize>

Tap-mouth nodes (cut-edge endpoints) to register as SPQR terminals.

already_isolated: Vec<usize>

Component indices (into graph.components) of cross-network couplers whose coupling edge (e.g. EL_drive -> PC1.led) is ALREADY isolated as EdgeKind::Behavioral in Phase 1 — the graph builder never instantiates that edge (GraphRole::Edge makes only the LDR side), so it is recorded here for diagnostics only and NEVER added to cuts (no double-cut, no double boundary-node).

Trait Implementations

impl Clone for DelayedCutSet

fn clone(&self) -> DelayedCutSet

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DelayedCutSet

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

Formats the value using the given formatter.

impl Default for DelayedCutSet

fn default() -> DelayedCutSet

Returns the “default value” for a type.