annotate src/implab/safe.js @ 0:fc2517695ee1

Initial commit, draft import of existing work
author cin
date Thu, 01 Jun 2017 13:20:03 +0300
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children 00779cb63b12
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1 define([],
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2
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3 function () {
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4 var id = 0,
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5 OID_FIELD = "__core_safe_oid_field",
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6 _create, _defineProperty, _keys;
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7
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8 if (!Object.keys) {
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9 _defineProperty = function (obj, prop, d) {
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10 if (!d)
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11 throw new Error("Invalid descriptor");
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12 obj[prop] = d.value;
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13 };
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14 } else {
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15 _defineProperty = Object.defineProperty;
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16 }
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17
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18 if (!Object.create) {
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19 var tctor = function () {};
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20 _create = function (proto) {
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21 if (arguments.length > 1)
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22 throw new Error("The two arguments for isn't supported");
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23
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24 tctor.prototype = proto;
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25 return new tctor();
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26 };
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27 } else {
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28 _create = Object.create;
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29 }
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30
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31 if (!Object.keys) {
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32 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys#Polyfill
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33 _keys = (function () {
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34 'use strict';
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35 var hasOwnProperty = Object.prototype.hasOwnProperty,
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36 hasDontEnumBug = !({
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37 toString: null
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38 }).propertyIsEnumerable('toString'),
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39 dontEnums = [
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40 'toString',
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41 'toLocaleString',
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42 'valueOf',
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43 'hasOwnProperty',
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44 'isPrototypeOf',
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45 'propertyIsEnumerable',
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46 'constructor'
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47 ],
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48 dontEnumsLength = dontEnums.length;
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49
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50 return function (obj) {
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51 if (typeof obj !== 'object' && (typeof obj !== 'function' || obj === null)) {
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52 throw new TypeError('Object.keys called on non-object');
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53 }
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54
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55 var result = [],
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56 prop, i;
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57
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58 for (prop in obj) {
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59 if (prop != OID_FIELD && hasOwnProperty.call(obj, prop)) {
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60 result.push(prop);
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61 }
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62 }
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63
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64 if (hasDontEnumBug) {
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65 for (i = 0; i < dontEnumsLength; i++) {
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66 if (hasOwnProperty.call(obj, dontEnums[i])) {
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67 result.push(dontEnums[i]);
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68 }
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69 }
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70 }
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71 return result;
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72 };
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73 }());
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74 } else {
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75 _keys = Object.keys;
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76 }
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77
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78 var safe = null;
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79 safe = {
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80 OID_FIELD: OID_FIELD,
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81
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82 argumentNotNull: function (arg, name) {
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83 if (arg === null || arg === undefined)
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84 throw new Error("The argument " + name + " can't be null or undefined");
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85 },
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86
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87 argumentNotEmptyString: function (arg, name) {
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88 if (typeof (arg) !== "string" || !arg.length)
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89 throw new Error("The argument '" + name + "' must be a not empty string");
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90 },
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91
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92 argumentNotEmptyArray: function (arg, name) {
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93 if (!(arg instanceof Array) || !arg.length)
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94 throw new Error("The argument '" + name + "' must be a not empty array");
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95 },
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96
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97 argumentOfType: function (arg, type, name) {
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98 if (!(arg instanceof type))
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99 throw new Error("The argument '" + name + "' type doesn't match");
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100 },
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101
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102 isNull: function (arg) {
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103 return (arg === null || arg === undefined);
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104 },
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105
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106 isPrimitive: function (arg) {
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107 return (arg === null || arg === undefined || typeof (arg) === "string" ||
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108 typeof (arg) === "number" || typeof (arg) === "boolean");
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109 },
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110
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111 isInteger: function (arg) {
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112 return parseInt(arg) === arg;
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113 },
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114
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115 isNumber: function (arg) {
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116 return parseFloat(arg) === arg;
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117 },
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118
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119 isString: function (val) {
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120 return typeof (val) == "string" || val instanceof String;
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121 },
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122
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123 isNullOrEmptyString: function (str) {
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124 if (str === null || str === undefined ||
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125 ((typeof (str) == "string" || str instanceof String) && str.length === 0))
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126 return true;
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127 },
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128
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129 isNotEmptyArray: function (arg) {
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130 return (arg instanceof Array && arg.length > 0);
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131 },
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132
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133 /**
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134 * Выполняет метод для каждого элемента массива, останавливается, когда
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135 * либо достигнут конец массива, либо функция <c>cb</c> вернула
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136 * значение.
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137 *
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138 * @param{Array | Object} obj массив элементов для просмотра
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139 * @param{Function} cb функция, вызываемая для каждого элемента
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140 * @param{Object} thisArg значение, которое будет передано в качестве
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141 * <c>this</c> в <c>cb</c>.
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142 * @returns Результат вызова функции <c>cb</c>, либо <c>undefined</c>
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143 * если достигнут конец массива.
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144 */
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145 each: function (obj, cb, thisArg) {
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146 safe.argumentNotNull(cb, "cb");
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147 var i, x;
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148 if (obj instanceof Array) {
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149 for (i = 0; i < obj.length; i++) {
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150 x = cb.call(thisArg, obj[i], i);
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151 if (x !== undefined)
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152 return x;
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153 }
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154 } else {
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155 var keys = _keys(obj);
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156 for (i = 0; i < keys.length; i++) {
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157 var k = keys[i];
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158 x = cb.call(thisArg, obj[k], k);
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159 if (x !== undefined)
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160 return x;
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161 }
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162 }
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163 },
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164
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165 oid: function (obj) {
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166 return this.isPrimitive(obj) ? undefined : obj[OID_FIELD] ||
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167 (_defineProperty(obj, OID_FIELD, {
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168 value: ++id,
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169 enumerable: false
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170 }) && id);
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171 },
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172
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173 /**
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174 * Копирует свойства одного объекта в другой.
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175 *
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176 * @param{Any} dest объект в который нужно скопировать значения
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177 * @param{Any} src источник из которого будут копироваться значения
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178 * @tmpl{Object|Array} tmpl шаблон по которому будет происходить
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179 * копирование. Если шаблон является массивом
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180 * (список свойств), тогда значения этого массива
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181 * являются именами свойсвт которые будут
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182 * скопированы. Если шаблон является объектом (карта
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183 * преобразования имен свойств src->dst), тогда
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184 * копирование будет осуществляться только
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185 * собственных свойств источника, присутсвующих в
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186 * шаблоне, при этом значение свойства шаблона
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187 * является именем свойства в которое будет
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188 * произведено коприрование
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189 */
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190 mixin: function (dest, src, tmpl) {
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191 safe.argumentNotNull(dest, "dest");
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192 if (!src)
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193 return dest;
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194
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195 var keys, i, p;
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196 if (arguments.length < 3) {
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197 keys = _keys(src);
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198 for (i = 0; i < keys.length; i++) {
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199 p = keys[i];
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200 dest[p] = src[p];
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201 }
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202 } else {
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203 if (tmpl instanceof Array) {
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204 for (i = 0; i < tmpl.length; i++) {
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205 p = tmpl[i];
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206 if (p in src)
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207 dest[p] = src[p];
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208 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
209
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
210 } else {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
211 keys = _keys(src);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
212 for (i = 0; i < keys.length; i++) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
213 p = keys[i];
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
214 if (p in tmpl)
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
215 dest[tmpl[p]] = src[p];
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
216 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
217 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
218 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
219 return dest;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
220 },
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
221
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
222 create: _create,
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
223
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
224 delegate: function (target, method) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
225 if (!(method instanceof Function)) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
226 this.argumentNotNull(target, "target");
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
227 method = target[method];
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
228 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
229
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
230 if (!(method instanceof Function))
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
231 throw new Error("'method' argument must be a Function or a method name");
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
232
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
233 return function () {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
234 return method.apply(target, arguments);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
235 };
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
236 },
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
237
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
238 /**
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
239 * Для каждого элемента массива вызывает указанную функцию и сохраняет
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
240 * возвращенное значение в массиве результатов.
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
241 *
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
242 * @remarks cb может выполняться асинхронно, при этом одновременно будет
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
243 * только одна операция.
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
244 *
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
245 * @async
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
246 */
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
247 pmap: function (items, cb) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
248 safe.argumentNotNull(cb, "cb");
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
249
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
250 if (items && items.then instanceof Function)
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
251 return items.then(function (data) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
252 return safe.pmap(data, cb);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
253 });
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
254
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
255 if (safe.isNull(items) || !items.length)
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
256 return items;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
257
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
258 var i = 0,
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
259 result = [];
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
260
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
261 function next() {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
262 var r, ri;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
263
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
264 function chain(x) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
265 result[ri] = x;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
266 return next();
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
267 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
268
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
269 while (i < items.length) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
270 r = cb(items[i], i);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
271 ri = i;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
272 i++;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
273 if (r && r.then) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
274 return r.then(chain);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
275 } else {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
276 result[ri] = r;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
277 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
278 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
279 return result;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
280 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
281
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
282 return next();
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
283 },
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
284
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
285 /**
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
286 * Для каждого элемента массива вызывает указанную функцию, результаты
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
287 * не сохраняются
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
288 *
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
289 * @remarks cb может выполняться асинхронно, при этом одновременно будет
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
290 * только одна операция.
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
291 * @async
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
292 */
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
293 pfor: function (items, cb) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
294 safe.argumentNotNull(cb, "cb");
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
295
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
296 if (items && items.then instanceof Function)
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
297 return items.then(function (data) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
298 return safe.pmap(data, cb);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
299 });
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
300
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
301 if (safe.isNull(items) || !items.length)
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
302 return items;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
303
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
304 var i = 0;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
305
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
306 function next() {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
307 while (i < items.length) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
308 var r = cb(items[i], i);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
309 i++;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
310 if (r && r.then)
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
311 return r.then(next);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
312 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
313 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
314
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
315 return next();
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
316 },
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
317
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
318 /**
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
319 * Выбирает первый элемент из последовательности, или обещания, если в
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
320 * качестве параметра используется обещание, оно должно вернуть массив.
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
321 *
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
322 * @param{Function} cb обработчик результата, ему будет передан первый
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
323 * элемент последовательности в случае успеха
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
324 * @param{Fucntion} err обработчик исключения, если массив пустой, либо
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
325 * не массив
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
326 *
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
327 * @remarks Если не указаны ни cb ни err, тогда функция вернет либо
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
328 * обещание, либо первый элемент.
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
329 * @async
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
330 */
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
331 first: function (sequence, cb, err) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
332 if (sequence) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
333 if (sequence.then instanceof Function) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
334 return sequence.then(function (res) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
335 return safe.first(res, cb, err);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
336 }, err);
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
337 } else if (sequence && "length" in sequence) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
338 if (sequence.length === 0) {
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
339 if (err)
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
340 return err(new Error("The sequence is empty"));
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
341 else
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
342 throw new Error("The sequence is empty");
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
343 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
344 return cb ? cb(sequence[0]) : sequence[0];
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
345 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
346 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
347
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
348 if (err)
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
349 return err(new Error("The sequence is required"));
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
350 else
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
351 throw new Error("The sequence is required");
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
352 }
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
353 };
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
354
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
355 return safe;
fc2517695ee1 Initial commit, draft import of existing work
cin
parents:
diff changeset
356 });