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12 | 'use strict';
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13 |
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14 | var _prodInvariant = require('./reactProdInvariant');
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15 |
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16 | var invariant = require('fbjs/lib/invariant');
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24 |
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25 | var oneArgumentPooler = function (copyFieldsFrom) {
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26 | var Klass = this;
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27 | if (Klass.instancePool.length) {
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28 | var instance = Klass.instancePool.pop();
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29 | Klass.call(instance, copyFieldsFrom);
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30 | return instance;
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31 | } else {
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32 | return new Klass(copyFieldsFrom);
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33 | }
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34 | };
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35 |
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36 | var twoArgumentPooler = function (a1, a2) {
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37 | var Klass = this;
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38 | if (Klass.instancePool.length) {
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39 | var instance = Klass.instancePool.pop();
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40 | Klass.call(instance, a1, a2);
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41 | return instance;
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42 | } else {
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43 | return new Klass(a1, a2);
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44 | }
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45 | };
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46 |
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47 | var threeArgumentPooler = function (a1, a2, a3) {
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48 | var Klass = this;
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49 | if (Klass.instancePool.length) {
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50 | var instance = Klass.instancePool.pop();
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51 | Klass.call(instance, a1, a2, a3);
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52 | return instance;
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53 | } else {
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54 | return new Klass(a1, a2, a3);
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55 | }
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56 | };
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57 |
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58 | var fourArgumentPooler = function (a1, a2, a3, a4) {
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59 | var Klass = this;
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60 | if (Klass.instancePool.length) {
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61 | var instance = Klass.instancePool.pop();
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62 | Klass.call(instance, a1, a2, a3, a4);
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63 | return instance;
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64 | } else {
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65 | return new Klass(a1, a2, a3, a4);
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66 | }
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67 | };
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68 |
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69 | var fiveArgumentPooler = function (a1, a2, a3, a4, a5) {
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70 | var Klass = this;
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71 | if (Klass.instancePool.length) {
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72 | var instance = Klass.instancePool.pop();
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73 | Klass.call(instance, a1, a2, a3, a4, a5);
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74 | return instance;
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75 | } else {
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76 | return new Klass(a1, a2, a3, a4, a5);
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77 | }
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78 | };
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79 |
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80 | var standardReleaser = function (instance) {
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81 | var Klass = this;
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82 | !(instance instanceof Klass) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Trying to release an instance into a pool of a different type.') : _prodInvariant('25') : void 0;
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83 | instance.destructor();
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84 | if (Klass.instancePool.length < Klass.poolSize) {
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85 | Klass.instancePool.push(instance);
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86 | }
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87 | };
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88 |
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89 | var DEFAULT_POOL_SIZE = 10;
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90 | var DEFAULT_POOLER = oneArgumentPooler;
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91 |
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99 |
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100 |
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101 | var addPoolingTo = function (CopyConstructor, pooler) {
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102 |
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103 |
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104 | var NewKlass = CopyConstructor;
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105 | NewKlass.instancePool = [];
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106 | NewKlass.getPooled = pooler || DEFAULT_POOLER;
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107 | if (!NewKlass.poolSize) {
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108 | NewKlass.poolSize = DEFAULT_POOL_SIZE;
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109 | }
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110 | NewKlass.release = standardReleaser;
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111 | return NewKlass;
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112 | };
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113 |
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114 | var PooledClass = {
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115 | addPoolingTo: addPoolingTo,
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116 | oneArgumentPooler: oneArgumentPooler,
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117 | twoArgumentPooler: twoArgumentPooler,
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118 | threeArgumentPooler: threeArgumentPooler,
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119 | fourArgumentPooler: fourArgumentPooler,
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120 | fiveArgumentPooler: fiveArgumentPooler
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121 | };
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122 |
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123 | module.exports = PooledClass; |
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