Function goMemo

packages/effect/src/ParseResult.ts:752–770

(ast: AST.AST, isDecoding: boolean)

)

const goMemo = (ast: AST.AST, isDecoding: boolean): Parser => {
  const memoMap = isDecoding ? decodeMemoMap : encodeMemoMap
  const memo = memoMap.get(ast)
  if (memo) {
    return memo
  }
  const raw = go(ast, isDecoding)
  const parseOptionsAnnotation = AST.getParseOptionsAnnotation(ast)
  const parserWithOptions: Parser = Option.isSome(parseOptionsAnnotation)
    ? (i, options) => raw(i, mergeInternalOptions(options, parseOptionsAnnotation.value))
    : raw
  const decodingFallbackAnnotation = AST.getDecodingFallbackAnnotation(ast)
  const parser: Parser = isDecoding && Option.isSome(decodingFallbackAnnotation)
    ? (i, options) =>
      handleForbidden(orElse(parserWithOptions(i, options), decodingFallbackAnnotation.value), ast, i, options)
    : parserWithOptions
  memoMap.set(ast, parser)
  return parser
}

const getConcurrency = (ast: AST.AST): Concurrency | undefined =>
  Option.getOrUndefined(AST.getConcurrencyAnnotation(ast))