return
				}
			} else if data, err = io.ReadAll(r); err != nil {
				return
			}
			s := string(data)
			s = s[:strings.LastIndex(s, "\n$$\n")]

			input := pkgbits.NewPkgDecoder(id, s)
			pkg = readUnifiedPackage(fset, nil, packages, input)
		case 'i':
			pkg, err = iImportData(fset, packages, buf, id)
		default:

func (pr *PkgDecoder) SyncMarkers() bool { return pr.sync }

// NewPkgDecoder returns a PkgDecoder initialized to read the Unified
// IR export data from input. pkgPath is the package path for the
// compilation unit that produced the export data.
//
// TODO(mdempsky): Remove pkgPath parameter; unneeded since CL 391014.
func NewPkgDecoder(pkgPath, input string) PkgDecoder {
	pr := PkgDecoder{
		pkgPath: pkgPath,
	}