Function saveLex

src/utils/bash/bashParser.ts:756–758

(L: Lexer)

/** Packed as (b << 16) | i — avoids heap alloc on every backtrack. */
type LexSave = number
function saveLex(L: Lexer): LexSave {
  return L.b * 0x10000 + L.i
}
function restoreLex(L: Lexer, s: LexSave): void {
  L.i = s & 0xffff
  L.b = s >>> 16