tuple.js 2.1 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", { value: true });
  3. exports.TupleCoder = void 0;
  4. const properties_js_1 = require("../../utils/properties.js");
  5. const typed_js_1 = require("../typed.js");
  6. const abstract_coder_js_1 = require("./abstract-coder.js");
  7. const array_js_1 = require("./array.js");
  8. /**
  9. * @_ignore
  10. */
  11. class TupleCoder extends abstract_coder_js_1.Coder {
  12. coders;
  13. constructor(coders, localName) {
  14. let dynamic = false;
  15. const types = [];
  16. coders.forEach((coder) => {
  17. if (coder.dynamic) {
  18. dynamic = true;
  19. }
  20. types.push(coder.type);
  21. });
  22. const type = ("tuple(" + types.join(",") + ")");
  23. super("tuple", type, localName, dynamic);
  24. (0, properties_js_1.defineProperties)(this, { coders: Object.freeze(coders.slice()) });
  25. }
  26. defaultValue() {
  27. const values = [];
  28. this.coders.forEach((coder) => {
  29. values.push(coder.defaultValue());
  30. });
  31. // We only output named properties for uniquely named coders
  32. const uniqueNames = this.coders.reduce((accum, coder) => {
  33. const name = coder.localName;
  34. if (name) {
  35. if (!accum[name]) {
  36. accum[name] = 0;
  37. }
  38. accum[name]++;
  39. }
  40. return accum;
  41. }, {});
  42. // Add named values
  43. this.coders.forEach((coder, index) => {
  44. let name = coder.localName;
  45. if (!name || uniqueNames[name] !== 1) {
  46. return;
  47. }
  48. if (name === "length") {
  49. name = "_length";
  50. }
  51. if (values[name] != null) {
  52. return;
  53. }
  54. values[name] = values[index];
  55. });
  56. return Object.freeze(values);
  57. }
  58. encode(writer, _value) {
  59. const value = typed_js_1.Typed.dereference(_value, "tuple");
  60. return (0, array_js_1.pack)(writer, this.coders, value);
  61. }
  62. decode(reader) {
  63. return (0, array_js_1.unpack)(reader, this.coders);
  64. }
  65. }
  66. exports.TupleCoder = TupleCoder;
  67. //# sourceMappingURL=tuple.js.map