// `evaluatePredicate`, `getPathLayout`, `parseOrdinalSeg`,

// `parsePredicateSeg`, `parseUnionSeg`, `quoteSeg`, `unquoteSeg`,

// `repackPath`, `resolvePositionalSeg`, `splitRespectingBrackets`

// `resolvePositionalSeg`, `splitRespectingBrackets`

// were exported from earlier prototypes. They're substrate-internal

// helpers — used by `find.ts`, the per-kind resolvers, and the parser

// itself, but not part of the upstream-portable public surface.

export function getPathLayout(path: OcPath): PathSegmentLayout {

// Quote-aware split — `.split('.')` would shred a quoted segment

// containing a literal `.` (e.g. `"a.b"`) and break repackPath.

// containing a literal `.` (e.g. `"a.b"`).

const sectionSubs = path.section === undefined ? [] : splitRespectingBrackets(path.section, ".");

const itemSubs = path.item === undefined ? [] : splitRespectingBrackets(path.item, ".");

const fieldSubs = path.field === undefined ? [] : splitRespectingBrackets(path.field, ".");

};

}

/**

* Re-pack a concrete sub-segment list into an `OcPath` preserving the

* pattern's slot boundaries. Throws on length mismatch.

*/

export function repackPath(pattern: OcPath, subs: readonly string[]): OcPath {

const layout = getPathLayout(pattern);

if (subs.length !== layout.subs.length) {

fail(

`repack length mismatch: pattern has ${layout.subs.length} sub-segments, got ${subs.length}`,

formatOcPath(pattern),

"OC_PATH_REPACK_LENGTH",

);

}

const sectionSubs = subs.slice(0, layout.sectionLen);

const itemSubs = subs.slice(layout.sectionLen, layout.sectionLen + layout.itemLen);

const fieldSubs = subs.slice(layout.sectionLen + layout.itemLen);

return {

file: pattern.file,

...(sectionSubs.length > 0 ? { section: sectionSubs.join(".") } : {}),

...(itemSubs.length > 0 ? { item: itemSubs.join(".") } : {}),

...(fieldSubs.length > 0 ? { field: fieldSubs.join(".") } : {}),

...(pattern.session !== undefined ? { session: pattern.session } : {}),

};

}

function extractSession(queryPart: string, input: string): string | undefined {

if (queryPart.length === 0) {

return undefined;