1 | "use strict";
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2 |
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3 | var DLList;
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4 | DLList = class DLList {
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5 | constructor(incr, decr) {
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6 | this.incr = incr;
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7 | this.decr = decr;
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8 | this._first = null;
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9 | this._last = null;
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10 | this.length = 0;
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11 | }
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12 |
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13 | push(value) {
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14 | var node;
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15 | this.length++;
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16 |
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17 | if (typeof this.incr === "function") {
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18 | this.incr();
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19 | }
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20 |
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21 | node = {
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22 | value,
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23 | prev: this._last,
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24 | next: null
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25 | };
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26 |
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27 | if (this._last != null) {
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28 | this._last.next = node;
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29 | this._last = node;
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30 | } else {
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31 | this._first = this._last = node;
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32 | }
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33 |
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34 | return void 0;
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35 | }
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36 |
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37 | shift() {
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38 | var value;
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39 |
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40 | if (this._first == null) {
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41 | return;
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42 | } else {
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43 | this.length--;
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44 |
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45 | if (typeof this.decr === "function") {
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46 | this.decr();
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47 | }
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48 | }
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49 |
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50 | value = this._first.value;
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51 |
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52 | if ((this._first = this._first.next) != null) {
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53 | this._first.prev = null;
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54 | } else {
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55 | this._last = null;
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56 | }
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57 |
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58 | return value;
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59 | }
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60 |
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61 | first() {
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62 | if (this._first != null) {
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63 | return this._first.value;
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64 | }
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65 | }
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66 |
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67 | getArray() {
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68 | var node, ref, results;
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69 | node = this._first;
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70 | results = [];
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71 |
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72 | while (node != null) {
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73 | results.push((ref = node, node = node.next, ref.value));
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74 | }
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75 |
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76 | return results;
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77 | }
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78 |
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79 | forEachShift(cb) {
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80 | var node;
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81 | node = this.shift();
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82 |
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83 | while (node != null) {
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84 | cb(node), node = this.shift();
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85 | }
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86 |
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87 | return void 0;
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88 | }
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89 |
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90 | debug() {
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91 | var node, ref, ref1, ref2, results;
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92 | node = this._first;
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93 | results = [];
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94 |
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95 | while (node != null) {
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96 | results.push((ref = node, node = node.next, {
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97 | value: ref.value,
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98 | prev: (ref1 = ref.prev) != null ? ref1.value : void 0,
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99 | next: (ref2 = ref.next) != null ? ref2.value : void 0
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100 | }));
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101 | }
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102 |
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103 | return results;
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104 | }
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105 |
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106 | };
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107 | module.exports = DLList; |
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