bufferTime.js 4.0 KB

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  1. "use strict";
  2. var __values = (this && this.__values) || function(o) {
  3. var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
  4. if (m) return m.call(o);
  5. if (o && typeof o.length === "number") return {
  6. next: function () {
  7. if (o && i >= o.length) o = void 0;
  8. return { value: o && o[i++], done: !o };
  9. }
  10. };
  11. throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
  12. };
  13. Object.defineProperty(exports, "__esModule", { value: true });
  14. exports.bufferTime = void 0;
  15. var Subscription_1 = require("../Subscription");
  16. var lift_1 = require("../util/lift");
  17. var OperatorSubscriber_1 = require("./OperatorSubscriber");
  18. var arrRemove_1 = require("../util/arrRemove");
  19. var async_1 = require("../scheduler/async");
  20. var args_1 = require("../util/args");
  21. var executeSchedule_1 = require("../util/executeSchedule");
  22. function bufferTime(bufferTimeSpan) {
  23. var _a, _b;
  24. var otherArgs = [];
  25. for (var _i = 1; _i < arguments.length; _i++) {
  26. otherArgs[_i - 1] = arguments[_i];
  27. }
  28. var scheduler = (_a = args_1.popScheduler(otherArgs)) !== null && _a !== void 0 ? _a : async_1.asyncScheduler;
  29. var bufferCreationInterval = (_b = otherArgs[0]) !== null && _b !== void 0 ? _b : null;
  30. var maxBufferSize = otherArgs[1] || Infinity;
  31. return lift_1.operate(function (source, subscriber) {
  32. var bufferRecords = [];
  33. var restartOnEmit = false;
  34. var emit = function (record) {
  35. var buffer = record.buffer, subs = record.subs;
  36. subs.unsubscribe();
  37. arrRemove_1.arrRemove(bufferRecords, record);
  38. subscriber.next(buffer);
  39. restartOnEmit && startBuffer();
  40. };
  41. var startBuffer = function () {
  42. if (bufferRecords) {
  43. var subs = new Subscription_1.Subscription();
  44. subscriber.add(subs);
  45. var buffer = [];
  46. var record_1 = {
  47. buffer: buffer,
  48. subs: subs,
  49. };
  50. bufferRecords.push(record_1);
  51. executeSchedule_1.executeSchedule(subs, scheduler, function () { return emit(record_1); }, bufferTimeSpan);
  52. }
  53. };
  54. if (bufferCreationInterval !== null && bufferCreationInterval >= 0) {
  55. executeSchedule_1.executeSchedule(subscriber, scheduler, startBuffer, bufferCreationInterval, true);
  56. }
  57. else {
  58. restartOnEmit = true;
  59. }
  60. startBuffer();
  61. var bufferTimeSubscriber = OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
  62. var e_1, _a;
  63. var recordsCopy = bufferRecords.slice();
  64. try {
  65. for (var recordsCopy_1 = __values(recordsCopy), recordsCopy_1_1 = recordsCopy_1.next(); !recordsCopy_1_1.done; recordsCopy_1_1 = recordsCopy_1.next()) {
  66. var record = recordsCopy_1_1.value;
  67. var buffer = record.buffer;
  68. buffer.push(value);
  69. maxBufferSize <= buffer.length && emit(record);
  70. }
  71. }
  72. catch (e_1_1) { e_1 = { error: e_1_1 }; }
  73. finally {
  74. try {
  75. if (recordsCopy_1_1 && !recordsCopy_1_1.done && (_a = recordsCopy_1.return)) _a.call(recordsCopy_1);
  76. }
  77. finally { if (e_1) throw e_1.error; }
  78. }
  79. }, function () {
  80. while (bufferRecords === null || bufferRecords === void 0 ? void 0 : bufferRecords.length) {
  81. subscriber.next(bufferRecords.shift().buffer);
  82. }
  83. bufferTimeSubscriber === null || bufferTimeSubscriber === void 0 ? void 0 : bufferTimeSubscriber.unsubscribe();
  84. subscriber.complete();
  85. subscriber.unsubscribe();
  86. }, undefined, function () { return (bufferRecords = null); });
  87. source.subscribe(bufferTimeSubscriber);
  88. });
  89. }
  90. exports.bufferTime = bufferTime;
  91. //# sourceMappingURL=bufferTime.js.map