97 lines
3.3 KiB
TypeScript
97 lines
3.3 KiB
TypeScript
import type { RelationshipCoverage } from "./relationshipCoverage.js";
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import type { FunctionDossier } from "./hopperValues.js";
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import { uniqueSorted } from "./canonicalOrdering.js";
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const callerCoveragePrefix = "Callers: ";
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const calleeCoveragePrefix = "Callees: ";
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/** Combine caller and callee read outcomes without losing either explanation. */
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export const combineFunctionRelationshipCoverage = (
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callers: RelationshipCoverage | undefined,
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callees: RelationshipCoverage | undefined,
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): RelationshipCoverage => {
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const reads = [
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{ direction: "callers" as const, coverage: callers },
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{ direction: "callees" as const, coverage: callees },
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];
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const diagnostics = uniqueSorted(
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reads.flatMap(({ coverage }) =>
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coverage !== undefined && "diagnostics" in coverage
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? coverage.diagnostics
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: [],
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),
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);
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const details = diagnostics.length > 0 ? { diagnostics } : {};
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const reasons = reads.flatMap(({ direction, coverage }) => {
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const label =
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direction === "callers" ? callerCoveragePrefix : calleeCoveragePrefix;
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const limitations =
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coverage === undefined
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? ["Provider did not report relationship coverage."]
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: coverage.status === "unknown"
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? [coverage.reason]
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: coverage.status === "partial"
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? coverage.limitations
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: [];
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return limitations.map((reason) => `${label}${reason}`);
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});
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if (
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reads.some(
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({ coverage }) => coverage === undefined || coverage.status === "unknown",
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)
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)
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return {
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status: "unknown",
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reason: uniqueSorted(reasons).join(" "),
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...details,
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};
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if (reasons.length > 0)
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return {
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status: "partial",
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limitations: uniqueSorted(reasons),
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...details,
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};
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return { status: "complete", ...details };
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};
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/**
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* Whether combined relationship coverage is unknown only on the caller side.
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* The combine helper above prefixes each direction's reasons, so a reason
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* that carries the caller prefix and no callee prefix records observed
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* callees with unobservable callers. Forward (callee-edge) searches stay
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* exhaustive under that caveat; the caller reason remains a limitation.
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*/
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export const isCallerOnlyUnknownCoverage = (
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coverage: RelationshipCoverage,
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): boolean =>
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coverage.status === "unknown" &&
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coverage.reason.startsWith(callerCoveragePrefix) &&
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!coverage.reason.includes(calleeCoveragePrefix);
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/** Explain why two resolved call sets cannot establish call-set equality. */
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export const functionCallCoverageLimitations = (
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coverage: RelationshipCoverage | null,
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dossier: Pick<FunctionDossier, "unresolved_calls">,
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): string[] => {
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const limitations =
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coverage === null
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? ["Provider did not report relationship coverage."]
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: coverage.status === "unknown"
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? [
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coverage.reason,
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...("diagnostics" in coverage ? coverage.diagnostics : []),
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]
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: coverage.status === "partial"
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? [
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...coverage.limitations,
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...("diagnostics" in coverage ? coverage.diagnostics : []),
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]
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: [];
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limitations.push(
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...(dossier.unresolved_calls ?? []).map(
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({ address, reason }) => `Unresolved call at ${address}: ${reason}`,
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),
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);
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return uniqueSorted(limitations);
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};
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