1 | 'use strict';
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2 |
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3 | var $ = require('../internals/export');
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4 | var DESCRIPTORS = require('../internals/descriptors');
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5 | var getBuiltIn = require('../internals/get-built-in');
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6 | var aCallable = require('../internals/a-callable');
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7 | var anInstance = require('../internals/an-instance');
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8 | var defineBuiltIn = require('../internals/define-built-in');
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9 | var defineBuiltIns = require('../internals/define-built-ins');
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10 | var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
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11 | var wellKnownSymbol = require('../internals/well-known-symbol');
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12 | var InternalStateModule = require('../internals/internal-state');
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13 | var addDisposableResource = require('../internals/add-disposable-resource');
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14 |
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15 | var SuppressedError = getBuiltIn('SuppressedError');
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16 | var $ReferenceError = ReferenceError;
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17 |
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18 | var DISPOSE = wellKnownSymbol('dispose');
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19 | var TO_STRING_TAG = wellKnownSymbol('toStringTag');
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20 |
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21 | var DISPOSABLE_STACK = 'DisposableStack';
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22 | var setInternalState = InternalStateModule.set;
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23 | var getDisposableStackInternalState = InternalStateModule.getterFor(DISPOSABLE_STACK);
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24 |
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25 | var HINT = 'sync-dispose';
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26 | var DISPOSED = 'disposed';
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27 | var PENDING = 'pending';
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28 |
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29 | var getPendingDisposableStackInternalState = function (stack) {
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30 | var internalState = getDisposableStackInternalState(stack);
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31 | if (internalState.state === DISPOSED) throw new $ReferenceError(DISPOSABLE_STACK + ' already disposed');
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32 | return internalState;
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33 | };
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34 |
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35 | var $DisposableStack = function DisposableStack() {
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36 | setInternalState(anInstance(this, DisposableStackPrototype), {
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37 | type: DISPOSABLE_STACK,
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38 | state: PENDING,
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39 | stack: []
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40 | });
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41 |
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42 | if (!DESCRIPTORS) this.disposed = false;
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43 | };
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44 |
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45 | var DisposableStackPrototype = $DisposableStack.prototype;
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46 |
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47 | defineBuiltIns(DisposableStackPrototype, {
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48 | dispose: function dispose() {
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49 | var internalState = getDisposableStackInternalState(this);
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50 | if (internalState.state === DISPOSED) return;
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51 | internalState.state = DISPOSED;
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52 | if (!DESCRIPTORS) this.disposed = true;
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53 | var stack = internalState.stack;
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54 | var i = stack.length;
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55 | var thrown = false;
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56 | var suppressed;
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57 | while (i) {
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58 | var disposeMethod = stack[--i];
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59 | stack[i] = undefined;
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60 | try {
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61 | disposeMethod();
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62 | } catch (errorResult) {
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63 | if (thrown) {
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64 | suppressed = new SuppressedError(errorResult, suppressed);
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65 | } else {
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66 | thrown = true;
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67 | suppressed = errorResult;
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68 | }
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69 | }
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70 | }
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71 | internalState.stack = undefined;
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72 | if (thrown) throw suppressed;
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73 | },
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74 | use: function use(value) {
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75 | addDisposableResource(getPendingDisposableStackInternalState(this), value, HINT);
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76 | return value;
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77 | },
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78 | adopt: function adopt(value, onDispose) {
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79 | var internalState = getPendingDisposableStackInternalState(this);
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80 | aCallable(onDispose);
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81 | addDisposableResource(internalState, undefined, HINT, function () {
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82 | onDispose(value);
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83 | });
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84 | return value;
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85 | },
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86 | defer: function defer(onDispose) {
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87 | var internalState = getPendingDisposableStackInternalState(this);
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88 | aCallable(onDispose);
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89 | addDisposableResource(internalState, undefined, HINT, onDispose);
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90 | },
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91 | move: function move() {
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92 | var internalState = getPendingDisposableStackInternalState(this);
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93 | var newDisposableStack = new $DisposableStack();
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94 | getDisposableStackInternalState(newDisposableStack).stack = internalState.stack;
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95 | internalState.stack = [];
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96 | internalState.state = DISPOSED;
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97 | if (!DESCRIPTORS) this.disposed = true;
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98 | return newDisposableStack;
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99 | }
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100 | });
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101 |
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102 | if (DESCRIPTORS) defineBuiltInAccessor(DisposableStackPrototype, 'disposed', {
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103 | configurable: true,
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104 | get: function disposed() {
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105 | return getDisposableStackInternalState(this).state === DISPOSED;
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106 | }
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107 | });
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108 |
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109 | defineBuiltIn(DisposableStackPrototype, DISPOSE, DisposableStackPrototype.dispose, { name: 'dispose' });
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110 | defineBuiltIn(DisposableStackPrototype, TO_STRING_TAG, DISPOSABLE_STACK, { nonWritable: true });
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111 |
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112 | $({ global: true, constructor: true }, {
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113 | DisposableStack: $DisposableStack
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114 | });
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