Function pythonNameScan

src/resolution/name-matcher.ts:610–615

Per-file, per-name scans are shared by every ref in the file; cleared with the other memos on sync.

(context: ResolutionContext, key: string, scan: () => T)

const PYTHON_NAME_SCANS = new WeakMap<ResolutionContext, Map<string, unknown>>();
/** Per-file, per-name scans are shared by every ref in the file; cleared with the other memos on sync. */
function pythonNameScan<T>(context: ResolutionContext, key: string, scan: () => T): T {
  let memo = PYTHON_NAME_SCANS.get(context);
  if (!memo) { memo = new Map(); PYTHON_NAME_SCANS.set(context, memo); }
  if (!memo.has(key)) memo.set(key, scan());
  return memo.get(key) as T;
}

function scanPythonImportKeys(name: string, filePath: string, context: ResolutionContext): Set<string> {
  const lines = pythonMemberLines(filePath, context);