"use strict"
var __createBinding =
  (this && this.__createBinding) ||
  (Object.create
    ? function (o, m, k, k2) {
        if (k2 === undefined) k2 = k
        Object.defineProperty(o, k2, {
          enumerable: true,
          get: function () {
            return m[k]
          }
        })
      }
    : function (o, m, k, k2) {
        if (k2 === undefined) k2 = k
        o[k2] = m[k]
      })
var __setModuleDefault =
  (this && this.__setModuleDefault) ||
  (Object.create
    ? function (o, v) {
        Object.defineProperty(o, "default", { enumerable: true, value: v })
      }
    : function (o, v) {
        o["default"] = v
      })
var __importStar =
  (this && this.__importStar) ||
  function (mod) {
    if (mod && mod.__esModule) return mod
    var result = {}
    if (mod != null)
      for (var k in mod)
        if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k))
          __createBinding(result, mod, k)
    __setModuleDefault(result, mod)
    return result
  }
Object.defineProperty(exports, "__esModule", { value: true })
exports.takeRight = exports.takeRight_ = void 0
// tracing: off
const A = __importStar(require("../../Collections/Immutable/Chunk"))
const Function_1 = require("../../Function")
const O = __importStar(require("../../Option"))
const Q = __importStar(require("../../Queue"))
const T = __importStar(require("../_internal/effect"))
const M = __importStar(require("../_internal/managed"))
const Ref = __importStar(require("../_internal/ref"))
const BP = __importStar(require("../BufferedPull"))
const Pull = __importStar(require("../Pull"))
const definitions_1 = require("./definitions")
const empty_1 = require("./empty")
/**
 * Takes the last specified number of elements from this stream.
 */
function takeRight_(self, n) {
  if (n <= 0) {
    return empty_1.empty
  } else {
    return new definitions_1.Stream(
      M.map_(
        M.bind_(
          M.bind_(
            M.bind_(M.do, "pull", () => M.mapM_(self.proc, BP.make)),
            "queue",
            () => T.toManaged(Q.makeSliding(n))
          ),
          "done",
          () => Ref.makeManagedRef(false)
        ),
        ({ done, pull, queue }) =>
          T.chain_(done.get, (_) => {
            if (_) {
              return Pull.end
            } else {
              return T.catchSome_(
                T.as_(
                  T.tap_(BP.pullElement(pull), (x) => Q.offer_(queue, x)),
                  A.empty()
                ),
                O.fold(
                  () => O.some(T.zipRight_(done.set(true), Q.takeAll(queue))),
                  () => O.none
                )
              )
            }
          })
      )
    )
  }
}
exports.takeRight_ = takeRight_
/**
 * Takes the last specified number of elements from this stream.
 */
function takeRight(n) {
  return (self) => takeRight_(self, n)
}
exports.takeRight = takeRight
//# sourceMappingURL=takeRight.js.map
