1 | /*--------------------------------------------------------------------------
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2 | * linq.js - LINQ for JavaScript
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3 | * ver 3.0.3-Beta4 (Oct. 9th, 2012)
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4 | *
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5 | * created and maintained by neuecc <ils@neue.cc>
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6 | * licensed under MIT License
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7 | * http://linqjs.codeplex.com/
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8 | *------------------------------------------------------------------------*/
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9 |
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10 | (function (root, undefined) {
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11 | // ReadOnly Function
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12 | var Functions = {
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13 | Identity: function (x) { return x; },
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14 | True: function () { return true; },
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15 | Blank: function () { }
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16 | };
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17 |
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18 | // const Type
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19 | var Types = {
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20 | Boolean: typeof true,
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21 | Number: typeof 0,
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22 | String: typeof "",
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23 | Object: typeof {},
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24 | Undefined: typeof undefined,
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25 | Function: typeof function () { }
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26 | };
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27 |
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28 | // private utility methods
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29 | var Utils = {
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30 | // Create anonymous function from lambda expression string
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31 | createLambda: function (expression) {
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32 | if (expression == null) return Functions.Identity;
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33 | if (typeof expression == Types.String) {
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34 | if (expression == "") {
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35 | return Functions.Identity;
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36 | }
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37 | else if (expression.indexOf("=>") == -1) {
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38 | var regexp = new RegExp("[$]+", "g");
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39 |
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40 | var maxLength = 0;
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41 | var match;
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42 | while (match = regexp.exec(expression)) {
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43 | var paramNumber = match[0].length;
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44 | if (paramNumber > maxLength) {
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45 | maxLength = paramNumber;
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46 | }
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47 | }
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48 |
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49 | var argArray = [];
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50 | for (var i = 1; i <= maxLength; i++) {
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51 | var dollar = "";
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52 | for (var j = 0; j < i; j++) {
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53 | dollar += "$";
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54 | }
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55 | argArray.push(dollar);
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56 | }
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57 |
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58 | var args = Array.prototype.join.call(argArray, ",");
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59 |
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60 | return new Function(args, "return " + expression);
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61 | }
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62 | else {
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63 | var expr = expression.match(/^[(\s]*([^()]*?)[)\s]*=>(.*)/);
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64 | return new Function(expr[1], "return " + expr[2]);
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65 | }
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66 | }
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67 | return expression;
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68 | },
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69 |
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70 | isIEnumerable: function (obj) {
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71 | if (typeof Enumerator !== Types.Undefined) {
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72 | try {
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73 | new Enumerator(obj); // check JScript(IE)'s Enumerator
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74 | return true;
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75 | }
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76 | catch (e) { }
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77 | }
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78 |
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79 | return false;
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80 | },
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81 |
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82 | // IE8's defineProperty is defined but cannot use, therefore check defineProperties
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83 | defineProperty: (Object.defineProperties != null)
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84 | ? function (target, methodName, value) {
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85 | Object.defineProperty(target, methodName, {
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86 | enumerable: false,
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87 | configurable: true,
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88 | writable: true,
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89 | value: value
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90 | })
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91 | }
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92 | : function (target, methodName, value) {
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93 | target[methodName] = value;
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94 | },
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95 |
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96 | compare: function (a, b) {
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97 | return (a === b) ? 0
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98 | : (a > b) ? 1
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99 | : -1;
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100 | },
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101 |
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102 | dispose: function (obj) {
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103 | if (obj != null) obj.dispose();
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104 | }
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105 | };
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106 |
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107 | // IEnumerator State
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108 | var State = { Before: 0, Running: 1, After: 2 };
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109 |
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110 | // "Enumerator" is conflict JScript's "Enumerator"
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111 | var IEnumerator = function (initialize, tryGetNext, dispose) {
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112 | var yielder = new Yielder();
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113 | var state = State.Before;
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114 |
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115 | this.current = yielder.current;
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116 | this.reset = function () { throw new Error('Reset is not supported'); };
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117 |
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118 | this.moveNext = function () {
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119 | try {
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120 | switch (state) {
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121 | case State.Before:
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122 | state = State.Running;
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123 | initialize();
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124 | // fall through
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125 | case State.Running:
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126 | if (tryGetNext.apply(yielder)) {
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127 | return true;
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128 | }
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129 | else {
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130 | this.dispose();
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131 | return false;
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132 | }
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133 | case State.After:
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134 | return false;
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135 | }
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136 | }
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137 | catch (e) {
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138 | this.dispose();
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139 | throw e;
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140 | }
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141 | };
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142 |
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143 | this.dispose = function () {
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144 | if (state != State.Running) return;
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145 |
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146 | try {
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147 | dispose();
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148 | }
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149 | finally {
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150 | state = State.After;
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151 | }
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152 | };
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153 | };
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154 | var $asm = {};
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155 | ss.initAssembly($asm, 'linq');
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156 | ss.initClass(IEnumerator, $asm, {}, null, [ss.IDisposable]);
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157 |
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158 | // for tryGetNext
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159 | var Yielder = function () {
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160 | var current = null;
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161 | this.current = function () { return current; };
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162 | this.yieldReturn = function (value) {
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163 | current = value;
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164 | return true;
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165 | };
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166 | this.yieldBreak = function () {
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167 | return false;
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168 | };
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169 | };
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170 |
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171 | // Enumerable constuctor
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172 | var Enumerable = function (getEnumerator) {
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173 | this.getEnumerator = getEnumerator;
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174 | };
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175 | ss.initClass(Enumerable, $asm, {}, null, [ss.IEnumerable]);
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176 |
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177 | // Utility
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178 |
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179 | Enumerable.Utils = {}; // container
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180 |
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181 | Enumerable.Utils.createLambda = function (expression) {
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182 | return Utils.createLambda(expression);
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183 | };
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184 |
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185 | Enumerable.Utils.createEnumerable = function (getEnumerator) {
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186 | return new Enumerable(getEnumerator);
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187 | };
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188 |
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189 | Enumerable.Utils.createEnumerator = function (initialize, tryGetNext, dispose) {
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190 | return new IEnumerator(initialize, tryGetNext, dispose);
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191 | };
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192 |
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193 | Enumerable.Utils.extendTo = function (type) {
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194 | var typeProto = type.prototype;
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195 | var enumerableProto;
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196 |
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197 | if (type === Array) {
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198 | enumerableProto = ArrayEnumerable.prototype;
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199 | Utils.defineProperty(typeProto, "getSource", function () {
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200 | return this;
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201 | });
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202 | }
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203 | else {
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204 | enumerableProto = Enumerable.prototype;
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205 | Utils.defineProperty(typeProto, "getEnumerator", function () {
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206 | return Enumerable.from(this).getEnumerator();
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207 | });
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208 | }
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209 |
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210 | for (var methodName in enumerableProto) {
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211 | var func = enumerableProto[methodName];
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212 |
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213 | // already extended
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214 | if (typeProto[methodName] == func) continue;
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215 |
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216 | // already defined(example Array#reverse/join/forEach...)
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217 | if (typeProto[methodName] != null) {
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218 | methodName = methodName + "ByLinq";
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219 | if (typeProto[methodName] == func) continue; // recheck
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220 | }
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221 |
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222 | if (func instanceof Function) {
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223 | Utils.defineProperty(typeProto, methodName, func);
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224 | }
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225 | }
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226 | };
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227 |
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228 | // Generator
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229 |
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230 | Enumerable.choice = function () // variable argument
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231 | {
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232 | var args = arguments;
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233 |
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234 | return new Enumerable(function () {
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235 | return new IEnumerator(
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236 | function () {
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237 | args = (args[0] instanceof Array) ? args[0]
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238 | : (args[0].getEnumerator != null) ? args[0].toArray()
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239 | : args;
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240 | },
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241 | function () {
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242 | return this.yieldReturn(args[Math.floor(Math.random() * args.length)]);
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243 | },
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244 | Functions.Blank);
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245 | });
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246 | };
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247 |
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248 | Enumerable.cycle = function () // variable argument
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249 | {
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250 | var args = arguments;
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251 |
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252 | return new Enumerable(function () {
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253 | var index = 0;
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254 | return new IEnumerator(
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255 | function () {
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256 | args = (args[0] instanceof Array) ? args[0]
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257 | : (args[0].getEnumerator != null) ? args[0].toArray()
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258 | : args;
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259 | },
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260 | function () {
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261 | if (index >= args.length) index = 0;
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262 | return this.yieldReturn(args[index++]);
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263 | },
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264 | Functions.Blank);
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265 | });
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266 | };
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267 |
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268 | Enumerable.empty = function () {
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269 | return new Enumerable(function () {
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270 | return new IEnumerator(
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271 | Functions.Blank,
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272 | function () { return false; },
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273 | Functions.Blank);
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274 | });
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275 | };
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276 |
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277 | Enumerable.from = function (obj) {
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278 | if (obj == null) {
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279 | return Enumerable.empty();
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280 | }
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281 | if (obj instanceof Enumerable) {
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282 | return obj;
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283 | }
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284 | if (typeof obj == Types.Number || typeof obj == Types.Boolean) {
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285 | return Enumerable.repeat(obj, 1);
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286 | }
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287 | if (typeof obj == Types.String) {
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288 | return new Enumerable(function () {
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289 | var index = 0;
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290 | return new IEnumerator(
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291 | Functions.Blank,
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292 | function () {
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293 | return (index < obj.length) ? this.yieldReturn(obj.charAt(index++)) : false;
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294 | },
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295 | Functions.Blank);
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296 | });
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297 | }
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298 | var ienum = ss.safeCast(obj, ss.IEnumerable);
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299 | if (ienum) {
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300 | var enumerator;
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301 | return new Enumerable(function () {
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302 | return new IEnumerator(
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303 | function () { enumerator = ss.getEnumerator(ienum); },
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304 | function () {
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305 | var ok = enumerator.moveNext();
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306 | return ok ? this.yieldReturn(enumerator.current()) : false;
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307 | },
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308 | function () {
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309 | var disposable = ss.safeCast(enumerator, ss.IDisposable);
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310 | if (disposable) {
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311 | disposable.dispose();
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312 | }
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313 | }
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314 | );
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315 | });
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316 | }
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317 |
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318 | if (typeof obj != Types.Function) {
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319 | // array or array like object
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320 | if (typeof obj.length == Types.Number) {
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321 | return new ArrayEnumerable(obj);
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322 | }
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323 |
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324 | // JScript's IEnumerable
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325 | if (!(obj instanceof Object) && Utils.isIEnumerable(obj)) {
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326 | return new Enumerable(function () {
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327 | var isFirst = true;
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328 | var enumerator;
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329 | return new IEnumerator(
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330 | function () { enumerator = new Enumerator(obj); },
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331 | function () {
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332 | if (isFirst) isFirst = false;
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333 | else enumerator.moveNext();
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334 |
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335 | return (enumerator.atEnd()) ? false : this.yieldReturn(enumerator.item());
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336 | },
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337 | Functions.Blank);
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338 | });
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339 | }
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340 |
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341 | // WinMD IIterable<T>
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342 | if (typeof Windows === Types.Object && typeof obj.first === Types.Function) {
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343 | return new Enumerable(function () {
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344 | var isFirst = true;
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345 | var enumerator;
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346 | return new IEnumerator(
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347 | function () { enumerator = obj.first(); },
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348 | function () {
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349 | if (isFirst) isFirst = false;
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350 | else enumerator.moveNext();
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351 |
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352 | return (enumerator.hasCurrent) ? this.yieldReturn(enumerator.current) : this.yieldBreak();
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353 | },
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354 | Functions.Blank);
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355 | });
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356 | }
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357 | }
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358 |
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359 | // case function/object : Create keyValuePair[]
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360 | return new Enumerable(function () {
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361 | var array = [];
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362 | var index = 0;
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363 |
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364 | return new IEnumerator(
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365 | function () {
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366 | for (var key in obj) {
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367 | var value = obj[key];
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368 | if (!(value instanceof Function) && Object.prototype.hasOwnProperty.call(obj, key)) {
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369 | array.push({ key: key, value: value });
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370 | }
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371 | }
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372 | },
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373 | function () {
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374 | return (index < array.length)
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375 | ? this.yieldReturn(array[index++])
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376 | : false;
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377 | },
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378 | Functions.Blank);
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379 | });
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380 | },
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381 |
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382 | Enumerable.make = function (element) {
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383 | return Enumerable.repeat(element, 1);
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384 | };
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385 |
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386 | // Overload:function(input, pattern)
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387 | // Overload:function(input, pattern, flags)
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388 | Enumerable.matches = function (input, pattern, flags) {
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389 | if (flags == null) flags = "";
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390 | if (pattern instanceof RegExp) {
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391 | flags += (pattern.ignoreCase) ? "i" : "";
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392 | flags += (pattern.multiline) ? "m" : "";
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393 | pattern = pattern.source;
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394 | }
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395 | if (flags.indexOf("g") === -1) flags += "g";
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396 |
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397 | return new Enumerable(function () {
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398 | var regex;
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399 | return new IEnumerator(
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400 | function () { regex = new RegExp(pattern, flags); },
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401 | function () {
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402 | var match = regex.exec(input);
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403 | return (match) ? this.yieldReturn(match) : false;
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404 | },
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405 | Functions.Blank);
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406 | });
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407 | };
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408 |
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409 | // Overload:function(start, count)
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410 | // Overload:function(start, count, step)
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411 | Enumerable.range = function (start, count, step) {
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412 | if (step == null) step = 1;
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413 |
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414 | return new Enumerable(function () {
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415 | var value;
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416 | var index = 0;
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417 |
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418 | return new IEnumerator(
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419 | function () { value = start - step; },
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420 | function () {
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421 | return (index++ < count)
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422 | ? this.yieldReturn(value += step)
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423 | : this.yieldBreak();
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424 | },
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425 | Functions.Blank);
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426 | });
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427 | };
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428 |
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429 | // Overload:function(start, count)
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430 | // Overload:function(start, count, step)
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431 | Enumerable.rangeDown = function (start, count, step) {
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432 | if (step == null) step = 1;
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433 |
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434 | return new Enumerable(function () {
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435 | var value;
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436 | var index = 0;
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437 |
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438 | return new IEnumerator(
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439 | function () { value = start + step; },
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440 | function () {
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441 | return (index++ < count)
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442 | ? this.yieldReturn(value -= step)
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443 | : this.yieldBreak();
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444 | },
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445 | Functions.Blank);
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446 | });
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447 | };
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448 |
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449 | // Overload:function(start, to)
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450 | // Overload:function(start, to, step)
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451 | Enumerable.rangeTo = function (start, to, step) {
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452 | if (step == null) step = 1;
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453 |
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454 | if (start < to) {
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455 | return new Enumerable(function () {
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456 | var value;
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457 |
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458 | return new IEnumerator(
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459 | function () { value = start - step; },
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460 | function () {
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461 | var next = value += step;
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462 | return (next <= to)
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463 | ? this.yieldReturn(next)
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464 | : this.yieldBreak();
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465 | },
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466 | Functions.Blank);
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467 | });
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468 | }
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469 | else {
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470 | return new Enumerable(function () {
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471 | var value;
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472 |
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473 | return new IEnumerator(
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474 | function () { value = start + step; },
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475 | function () {
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476 | var next = value -= step;
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477 | return (next >= to)
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478 | ? this.yieldReturn(next)
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479 | : this.yieldBreak();
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480 | },
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481 | Functions.Blank);
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482 | });
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483 | }
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484 | };
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485 |
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486 | // Overload:function(element)
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487 | // Overload:function(element, count)
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488 | Enumerable.repeat = function (element, count) {
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489 | if (count != null) return Enumerable.repeat(element).take(count);
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490 |
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491 | return new Enumerable(function () {
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492 | return new IEnumerator(
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493 | Functions.Blank,
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494 | function () { return this.yieldReturn(element); },
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495 | Functions.Blank);
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496 | });
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497 | };
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498 |
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499 | Enumerable.repeatWithFinalize = function (initializer, finalizer) {
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500 | initializer = Utils.createLambda(initializer);
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501 | finalizer = Utils.createLambda(finalizer);
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502 |
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503 | return new Enumerable(function () {
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504 | var element;
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505 | return new IEnumerator(
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506 | function () { element = initializer(); },
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507 | function () { return this.yieldReturn(element); },
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508 | function () {
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509 | if (element != null) {
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510 | finalizer(element);
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511 | element = null;
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512 | }
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513 | });
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514 | });
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515 | };
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516 |
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517 | // Overload:function(func)
|
---|
518 | // Overload:function(func, count)
|
---|
519 | Enumerable.generate = function (func, count) {
|
---|
520 | if (count != null) return Enumerable.generate(func).take(count);
|
---|
521 | func = Utils.createLambda(func);
|
---|
522 |
|
---|
523 | return new Enumerable(function () {
|
---|
524 | return new IEnumerator(
|
---|
525 | Functions.Blank,
|
---|
526 | function () { return this.yieldReturn(func()); },
|
---|
527 | Functions.Blank);
|
---|
528 | });
|
---|
529 | };
|
---|
530 |
|
---|
531 | // Overload:function()
|
---|
532 | // Overload:function(start)
|
---|
533 | // Overload:function(start, step)
|
---|
534 | Enumerable.toInfinity = function (start, step) {
|
---|
535 | if (start == null) start = 0;
|
---|
536 | if (step == null) step = 1;
|
---|
537 |
|
---|
538 | return new Enumerable(function () {
|
---|
539 | var value;
|
---|
540 | return new IEnumerator(
|
---|
541 | function () { value = start - step; },
|
---|
542 | function () { return this.yieldReturn(value += step); },
|
---|
543 | Functions.Blank);
|
---|
544 | });
|
---|
545 | };
|
---|
546 |
|
---|
547 | // Overload:function()
|
---|
548 | // Overload:function(start)
|
---|
549 | // Overload:function(start, step)
|
---|
550 | Enumerable.toNegativeInfinity = function (start, step) {
|
---|
551 | if (start == null) start = 0;
|
---|
552 | if (step == null) step = 1;
|
---|
553 |
|
---|
554 | return new Enumerable(function () {
|
---|
555 | var value;
|
---|
556 | return new IEnumerator(
|
---|
557 | function () { value = start + step; },
|
---|
558 | function () { return this.yieldReturn(value -= step); },
|
---|
559 | Functions.Blank);
|
---|
560 | });
|
---|
561 | };
|
---|
562 |
|
---|
563 | Enumerable.unfold = function (seed, func) {
|
---|
564 | func = Utils.createLambda(func);
|
---|
565 |
|
---|
566 | return new Enumerable(function () {
|
---|
567 | var isFirst = true;
|
---|
568 | var value;
|
---|
569 | return new IEnumerator(
|
---|
570 | Functions.Blank,
|
---|
571 | function () {
|
---|
572 | if (isFirst) {
|
---|
573 | isFirst = false;
|
---|
574 | value = seed;
|
---|
575 | return this.yieldReturn(value);
|
---|
576 | }
|
---|
577 | value = func(value);
|
---|
578 | return this.yieldReturn(value);
|
---|
579 | },
|
---|
580 | Functions.Blank);
|
---|
581 | });
|
---|
582 | };
|
---|
583 |
|
---|
584 | Enumerable.defer = function (enumerableFactory) {
|
---|
585 |
|
---|
586 | return new Enumerable(function () {
|
---|
587 | var enumerator;
|
---|
588 |
|
---|
589 | return new IEnumerator(
|
---|
590 | function () { enumerator = Enumerable.from(enumerableFactory()).getEnumerator(); },
|
---|
591 | function () {
|
---|
592 | return (enumerator.moveNext())
|
---|
593 | ? this.yieldReturn(enumerator.current())
|
---|
594 | : this.yieldBreak();
|
---|
595 | },
|
---|
596 | function () {
|
---|
597 | Utils.dispose(enumerator);
|
---|
598 | });
|
---|
599 | });
|
---|
600 | };
|
---|
601 |
|
---|
602 | // Extension Methods
|
---|
603 |
|
---|
604 | /* Projection and Filtering Methods */
|
---|
605 |
|
---|
606 | // Overload:function(func)
|
---|
607 | // Overload:function(func, resultSelector<element>)
|
---|
608 | // Overload:function(func, resultSelector<element, nestLevel>)
|
---|
609 | Enumerable.prototype.traverseBreadthFirst = function (func, resultSelector) {
|
---|
610 | var source = this;
|
---|
611 | func = Utils.createLambda(func);
|
---|
612 | resultSelector = Utils.createLambda(resultSelector);
|
---|
613 |
|
---|
614 | return new Enumerable(function () {
|
---|
615 | var enumerator;
|
---|
616 | var nestLevel = 0;
|
---|
617 | var buffer = [];
|
---|
618 |
|
---|
619 | return new IEnumerator(
|
---|
620 | function () { enumerator = source.getEnumerator(); },
|
---|
621 | function () {
|
---|
622 | while (true) {
|
---|
623 | if (enumerator.moveNext()) {
|
---|
624 | buffer.push(enumerator.current());
|
---|
625 | return this.yieldReturn(resultSelector(enumerator.current(), nestLevel));
|
---|
626 | }
|
---|
627 |
|
---|
628 | var next = Enumerable.from(buffer).selectMany(function (x) { return func(x); });
|
---|
629 | if (!next.any()) {
|
---|
630 | return false;
|
---|
631 | }
|
---|
632 | else {
|
---|
633 | nestLevel++;
|
---|
634 | buffer = [];
|
---|
635 | Utils.dispose(enumerator);
|
---|
636 | enumerator = next.getEnumerator();
|
---|
637 | }
|
---|
638 | }
|
---|
639 | },
|
---|
640 | function () { Utils.dispose(enumerator); });
|
---|
641 | });
|
---|
642 | };
|
---|
643 |
|
---|
644 | // Overload:function(func)
|
---|
645 | // Overload:function(func, resultSelector<element>)
|
---|
646 | // Overload:function(func, resultSelector<element, nestLevel>)
|
---|
647 | Enumerable.prototype.traverseDepthFirst = function (func, resultSelector) {
|
---|
648 | var source = this;
|
---|
649 | func = Utils.createLambda(func);
|
---|
650 | resultSelector = Utils.createLambda(resultSelector);
|
---|
651 |
|
---|
652 | return new Enumerable(function () {
|
---|
653 | var enumeratorStack = [];
|
---|
654 | var enumerator;
|
---|
655 |
|
---|
656 | return new IEnumerator(
|
---|
657 | function () { enumerator = source.getEnumerator(); },
|
---|
658 | function () {
|
---|
659 | while (true) {
|
---|
660 | if (enumerator.moveNext()) {
|
---|
661 | var value = resultSelector(enumerator.current(), enumeratorStack.length);
|
---|
662 | enumeratorStack.push(enumerator);
|
---|
663 | enumerator = Enumerable.from(func(enumerator.current())).getEnumerator();
|
---|
664 | return this.yieldReturn(value);
|
---|
665 | }
|
---|
666 |
|
---|
667 | if (enumeratorStack.length <= 0) return false;
|
---|
668 | Utils.dispose(enumerator);
|
---|
669 | enumerator = enumeratorStack.pop();
|
---|
670 | }
|
---|
671 | },
|
---|
672 | function () {
|
---|
673 | try {
|
---|
674 | Utils.dispose(enumerator);
|
---|
675 | }
|
---|
676 | finally {
|
---|
677 | Enumerable.from(enumeratorStack).forEach(function (s) { s.dispose(); });
|
---|
678 | }
|
---|
679 | });
|
---|
680 | });
|
---|
681 | };
|
---|
682 |
|
---|
683 | Enumerable.prototype.flatten = function () {
|
---|
684 | var source = this;
|
---|
685 |
|
---|
686 | return new Enumerable(function () {
|
---|
687 | var enumerator;
|
---|
688 | var middleEnumerator = null;
|
---|
689 |
|
---|
690 | return new IEnumerator(
|
---|
691 | function () { enumerator = source.getEnumerator(); },
|
---|
692 | function () {
|
---|
693 | while (true) {
|
---|
694 | if (middleEnumerator != null) {
|
---|
695 | if (middleEnumerator.moveNext()) {
|
---|
696 | return this.yieldReturn(middleEnumerator.current());
|
---|
697 | }
|
---|
698 | else {
|
---|
699 | middleEnumerator = null;
|
---|
700 | }
|
---|
701 | }
|
---|
702 |
|
---|
703 | if (enumerator.moveNext()) {
|
---|
704 | if (enumerator.current() instanceof Array) {
|
---|
705 | Utils.dispose(middleEnumerator);
|
---|
706 | middleEnumerator = Enumerable.from(enumerator.current())
|
---|
707 | .selectMany(Functions.Identity)
|
---|
708 | .flatten()
|
---|
709 | .getEnumerator();
|
---|
710 | continue;
|
---|
711 | }
|
---|
712 | else {
|
---|
713 | return this.yieldReturn(enumerator.current());
|
---|
714 | }
|
---|
715 | }
|
---|
716 |
|
---|
717 | return false;
|
---|
718 | }
|
---|
719 | },
|
---|
720 | function () {
|
---|
721 | try {
|
---|
722 | Utils.dispose(enumerator);
|
---|
723 | }
|
---|
724 | finally {
|
---|
725 | Utils.dispose(middleEnumerator);
|
---|
726 | }
|
---|
727 | });
|
---|
728 | });
|
---|
729 | };
|
---|
730 |
|
---|
731 | Enumerable.prototype.pairwise = function (selector) {
|
---|
732 | var source = this;
|
---|
733 | selector = Utils.createLambda(selector);
|
---|
734 |
|
---|
735 | return new Enumerable(function () {
|
---|
736 | var enumerator;
|
---|
737 |
|
---|
738 | return new IEnumerator(
|
---|
739 | function () {
|
---|
740 | enumerator = source.getEnumerator();
|
---|
741 | enumerator.moveNext();
|
---|
742 | },
|
---|
743 | function () {
|
---|
744 | var prev = enumerator.current();
|
---|
745 | return (enumerator.moveNext())
|
---|
746 | ? this.yieldReturn(selector(prev, enumerator.current()))
|
---|
747 | : false;
|
---|
748 | },
|
---|
749 | function () { Utils.dispose(enumerator); });
|
---|
750 | });
|
---|
751 | };
|
---|
752 |
|
---|
753 | // Overload:function(func)
|
---|
754 | // Overload:function(seed,func<value,element>)
|
---|
755 | Enumerable.prototype.scan = function (seed, func) {
|
---|
756 | var isUseSeed;
|
---|
757 | if (func == null) {
|
---|
758 | func = Utils.createLambda(seed); // arguments[0]
|
---|
759 | isUseSeed = false;
|
---|
760 | } else {
|
---|
761 | func = Utils.createLambda(func);
|
---|
762 | isUseSeed = true;
|
---|
763 | }
|
---|
764 | var source = this;
|
---|
765 |
|
---|
766 | return new Enumerable(function () {
|
---|
767 | var enumerator;
|
---|
768 | var value;
|
---|
769 | var isFirst = true;
|
---|
770 |
|
---|
771 | return new IEnumerator(
|
---|
772 | function () { enumerator = source.getEnumerator(); },
|
---|
773 | function () {
|
---|
774 | if (isFirst) {
|
---|
775 | isFirst = false;
|
---|
776 | if (!isUseSeed) {
|
---|
777 | if (enumerator.moveNext()) {
|
---|
778 | return this.yieldReturn(value = enumerator.current());
|
---|
779 | }
|
---|
780 | }
|
---|
781 | else {
|
---|
782 | return this.yieldReturn(value = seed);
|
---|
783 | }
|
---|
784 | }
|
---|
785 |
|
---|
786 | return (enumerator.moveNext())
|
---|
787 | ? this.yieldReturn(value = func(value, enumerator.current()))
|
---|
788 | : false;
|
---|
789 | },
|
---|
790 | function () { Utils.dispose(enumerator); });
|
---|
791 | });
|
---|
792 | };
|
---|
793 |
|
---|
794 | // Overload:function(selector<element>)
|
---|
795 | // Overload:function(selector<element,index>)
|
---|
796 | Enumerable.prototype.select = function (selector) {
|
---|
797 | selector = Utils.createLambda(selector);
|
---|
798 |
|
---|
799 | if (selector.length <= 1) {
|
---|
800 | return new WhereSelectEnumerable(this, null, selector);
|
---|
801 | }
|
---|
802 | else {
|
---|
803 | var source = this;
|
---|
804 |
|
---|
805 | return new Enumerable(function () {
|
---|
806 | var enumerator;
|
---|
807 | var index = 0;
|
---|
808 |
|
---|
809 | return new IEnumerator(
|
---|
810 | function () { enumerator = source.getEnumerator(); },
|
---|
811 | function () {
|
---|
812 | return (enumerator.moveNext())
|
---|
813 | ? this.yieldReturn(selector(enumerator.current(), index++))
|
---|
814 | : false;
|
---|
815 | },
|
---|
816 | function () { Utils.dispose(enumerator); });
|
---|
817 | });
|
---|
818 | }
|
---|
819 | };
|
---|
820 |
|
---|
821 | // Overload:function(collectionSelector<element>)
|
---|
822 | // Overload:function(collectionSelector<element,index>)
|
---|
823 | // Overload:function(collectionSelector<element>,resultSelector)
|
---|
824 | // Overload:function(collectionSelector<element,index>,resultSelector)
|
---|
825 | Enumerable.prototype.selectMany = function (collectionSelector, resultSelector) {
|
---|
826 | var source = this;
|
---|
827 | collectionSelector = Utils.createLambda(collectionSelector);
|
---|
828 | if (resultSelector == null) resultSelector = function (a, b) { return b; };
|
---|
829 | resultSelector = Utils.createLambda(resultSelector);
|
---|
830 |
|
---|
831 | return new Enumerable(function () {
|
---|
832 | var enumerator;
|
---|
833 | var middleEnumerator = undefined;
|
---|
834 | var index = 0;
|
---|
835 |
|
---|
836 | return new IEnumerator(
|
---|
837 | function () { enumerator = source.getEnumerator(); },
|
---|
838 | function () {
|
---|
839 | if (middleEnumerator === undefined) {
|
---|
840 | if (!enumerator.moveNext()) return false;
|
---|
841 | }
|
---|
842 | do {
|
---|
843 | if (middleEnumerator == null) {
|
---|
844 | var middleSeq = collectionSelector(enumerator.current(), index++);
|
---|
845 | middleEnumerator = Enumerable.from(middleSeq).getEnumerator();
|
---|
846 | }
|
---|
847 | if (middleEnumerator.moveNext()) {
|
---|
848 | return this.yieldReturn(resultSelector(enumerator.current(), middleEnumerator.current()));
|
---|
849 | }
|
---|
850 | Utils.dispose(middleEnumerator);
|
---|
851 | middleEnumerator = null;
|
---|
852 | } while (enumerator.moveNext());
|
---|
853 | return false;
|
---|
854 | },
|
---|
855 | function () {
|
---|
856 | try {
|
---|
857 | Utils.dispose(enumerator);
|
---|
858 | }
|
---|
859 | finally {
|
---|
860 | Utils.dispose(middleEnumerator);
|
---|
861 | }
|
---|
862 | });
|
---|
863 | });
|
---|
864 | };
|
---|
865 |
|
---|
866 | // Overload:function(predicate<element>)
|
---|
867 | // Overload:function(predicate<element,index>)
|
---|
868 | Enumerable.prototype.where = function (predicate) {
|
---|
869 | predicate = Utils.createLambda(predicate);
|
---|
870 |
|
---|
871 | if (predicate.length <= 1) {
|
---|
872 | return new WhereEnumerable(this, predicate);
|
---|
873 | }
|
---|
874 | else {
|
---|
875 | var source = this;
|
---|
876 |
|
---|
877 | return new Enumerable(function () {
|
---|
878 | var enumerator;
|
---|
879 | var index = 0;
|
---|
880 |
|
---|
881 | return new IEnumerator(
|
---|
882 | function () { enumerator = source.getEnumerator(); },
|
---|
883 | function () {
|
---|
884 | while (enumerator.moveNext()) {
|
---|
885 | if (predicate(enumerator.current(), index++)) {
|
---|
886 | return this.yieldReturn(enumerator.current());
|
---|
887 | }
|
---|
888 | }
|
---|
889 | return false;
|
---|
890 | },
|
---|
891 | function () { Utils.dispose(enumerator); });
|
---|
892 | });
|
---|
893 | }
|
---|
894 | };
|
---|
895 |
|
---|
896 |
|
---|
897 | // Overload:function(selector<element>)
|
---|
898 | // Overload:function(selector<element,index>)
|
---|
899 | Enumerable.prototype.choose = function (selector) {
|
---|
900 | selector = Utils.createLambda(selector);
|
---|
901 | var source = this;
|
---|
902 |
|
---|
903 | return new Enumerable(function () {
|
---|
904 | var enumerator;
|
---|
905 | var index = 0;
|
---|
906 |
|
---|
907 | return new IEnumerator(
|
---|
908 | function () { enumerator = source.getEnumerator(); },
|
---|
909 | function () {
|
---|
910 | while (enumerator.moveNext()) {
|
---|
911 | var result = selector(enumerator.current(), index++);
|
---|
912 | if (result != null) {
|
---|
913 | return this.yieldReturn(result);
|
---|
914 | }
|
---|
915 | }
|
---|
916 | return this.yieldBreak();
|
---|
917 | },
|
---|
918 | function () { Utils.dispose(enumerator); });
|
---|
919 | });
|
---|
920 | };
|
---|
921 |
|
---|
922 | Enumerable.prototype.ofType = function (type) {
|
---|
923 | var source = this;
|
---|
924 |
|
---|
925 | return new Enumerable(function () {
|
---|
926 | var enumerator;
|
---|
927 |
|
---|
928 | return new IEnumerator(
|
---|
929 | function () { enumerator = ss.getEnumerator(source); },
|
---|
930 | function () {
|
---|
931 | while (enumerator.moveNext()) {
|
---|
932 | var v = ss.safeCast(enumerator.current(), type);
|
---|
933 | if (ss.isValue(v)) {
|
---|
934 | return this.yieldReturn(v);
|
---|
935 | }
|
---|
936 | }
|
---|
937 | return false;
|
---|
938 | },
|
---|
939 | function () { Utils.dispose(enumerator); });
|
---|
940 | });
|
---|
941 | };
|
---|
942 |
|
---|
943 | // mutiple arguments, last one is selector, others are enumerable
|
---|
944 | Enumerable.prototype.zip = function () {
|
---|
945 | var args = arguments;
|
---|
946 | var selector = Utils.createLambda(arguments[arguments.length - 1]);
|
---|
947 |
|
---|
948 | var source = this;
|
---|
949 | // optimized case:argument is 2
|
---|
950 | if (arguments.length == 2) {
|
---|
951 | var second = arguments[0];
|
---|
952 |
|
---|
953 | return new Enumerable(function () {
|
---|
954 | var firstEnumerator;
|
---|
955 | var secondEnumerator;
|
---|
956 | var index = 0;
|
---|
957 |
|
---|
958 | return new IEnumerator(
|
---|
959 | function () {
|
---|
960 | firstEnumerator = source.getEnumerator();
|
---|
961 | secondEnumerator = Enumerable.from(second).getEnumerator();
|
---|
962 | },
|
---|
963 | function () {
|
---|
964 | if (firstEnumerator.moveNext() && secondEnumerator.moveNext()) {
|
---|
965 | return this.yieldReturn(selector(firstEnumerator.current(), secondEnumerator.current(), index++));
|
---|
966 | }
|
---|
967 | return false;
|
---|
968 | },
|
---|
969 | function () {
|
---|
970 | try {
|
---|
971 | Utils.dispose(firstEnumerator);
|
---|
972 | } finally {
|
---|
973 | Utils.dispose(secondEnumerator);
|
---|
974 | }
|
---|
975 | });
|
---|
976 | });
|
---|
977 | }
|
---|
978 | else {
|
---|
979 | return new Enumerable(function () {
|
---|
980 | var enumerators;
|
---|
981 | var index = 0;
|
---|
982 |
|
---|
983 | return new IEnumerator(
|
---|
984 | function () {
|
---|
985 | var array = Enumerable.make(source)
|
---|
986 | .concat(Enumerable.from(args).takeExceptLast().select(Enumerable.from))
|
---|
987 | .select(function (x) { return x.getEnumerator() })
|
---|
988 | .toArray();
|
---|
989 | enumerators = Enumerable.from(array);
|
---|
990 | },
|
---|
991 | function () {
|
---|
992 | if (enumerators.all(function (x) { return x.moveNext() })) {
|
---|
993 | var array = enumerators
|
---|
994 | .select(function (x) { return x.current() })
|
---|
995 | .toArray();
|
---|
996 | array.push(index++);
|
---|
997 | return this.yieldReturn(selector.apply(null, array));
|
---|
998 | }
|
---|
999 | else {
|
---|
1000 | return this.yieldBreak();
|
---|
1001 | }
|
---|
1002 | },
|
---|
1003 | function () {
|
---|
1004 | Enumerable.from(enumerators).forEach(Utils.dispose);
|
---|
1005 | });
|
---|
1006 | });
|
---|
1007 | }
|
---|
1008 | };
|
---|
1009 |
|
---|
1010 | // mutiple arguments
|
---|
1011 | Enumerable.prototype.merge = function () {
|
---|
1012 | var args = arguments;
|
---|
1013 | var source = this;
|
---|
1014 |
|
---|
1015 | return new Enumerable(function () {
|
---|
1016 | var enumerators;
|
---|
1017 | var index = -1;
|
---|
1018 |
|
---|
1019 | return new IEnumerator(
|
---|
1020 | function () {
|
---|
1021 | enumerators = Enumerable.make(source)
|
---|
1022 | .concat(Enumerable.from(args).select(Enumerable.from))
|
---|
1023 | .select(function (x) { return x.getEnumerator() })
|
---|
1024 | .toArray();
|
---|
1025 | },
|
---|
1026 | function () {
|
---|
1027 | while (enumerators.length > 0) {
|
---|
1028 | index = (index >= enumerators.length - 1) ? 0 : index + 1;
|
---|
1029 | var enumerator = enumerators[index];
|
---|
1030 |
|
---|
1031 | if (enumerator.moveNext()) {
|
---|
1032 | return this.yieldReturn(enumerator.current());
|
---|
1033 | }
|
---|
1034 | else {
|
---|
1035 | enumerator.dispose();
|
---|
1036 | enumerators.splice(index--, 1);
|
---|
1037 | }
|
---|
1038 | }
|
---|
1039 | return this.yieldBreak();
|
---|
1040 | },
|
---|
1041 | function () {
|
---|
1042 | Enumerable.from(enumerators).forEach(Utils.dispose);
|
---|
1043 | });
|
---|
1044 | });
|
---|
1045 | };
|
---|
1046 |
|
---|
1047 | /* Join Methods */
|
---|
1048 |
|
---|
1049 | // Overload:function (inner, outerKeySelector, innerKeySelector, resultSelector)
|
---|
1050 | // Overload:function (inner, outerKeySelector, innerKeySelector, resultSelector, comparer)
|
---|
1051 | Enumerable.prototype.join = function (inner, outerKeySelector, innerKeySelector, resultSelector, comparer) {
|
---|
1052 | outerKeySelector = Utils.createLambda(outerKeySelector);
|
---|
1053 | innerKeySelector = Utils.createLambda(innerKeySelector);
|
---|
1054 | resultSelector = Utils.createLambda(resultSelector);
|
---|
1055 | var source = this;
|
---|
1056 |
|
---|
1057 | return new Enumerable(function () {
|
---|
1058 | var outerEnumerator;
|
---|
1059 | var lookup;
|
---|
1060 | var innerElements = null;
|
---|
1061 | var innerCount = 0;
|
---|
1062 |
|
---|
1063 | return new IEnumerator(
|
---|
1064 | function () {
|
---|
1065 | outerEnumerator = source.getEnumerator();
|
---|
1066 | lookup = Enumerable.from(inner).toLookup(innerKeySelector, Functions.Identity, comparer);
|
---|
1067 | },
|
---|
1068 | function () {
|
---|
1069 | while (true) {
|
---|
1070 | if (innerElements != null) {
|
---|
1071 | var innerElement = innerElements[innerCount++];
|
---|
1072 | if (innerElement !== undefined) {
|
---|
1073 | return this.yieldReturn(resultSelector(outerEnumerator.current(), innerElement));
|
---|
1074 | }
|
---|
1075 |
|
---|
1076 | innerElement = null;
|
---|
1077 | innerCount = 0;
|
---|
1078 | }
|
---|
1079 |
|
---|
1080 | if (outerEnumerator.moveNext()) {
|
---|
1081 | var key = outerKeySelector(outerEnumerator.current());
|
---|
1082 | innerElements = lookup.get(key).toArray();
|
---|
1083 | } else {
|
---|
1084 | return false;
|
---|
1085 | }
|
---|
1086 | }
|
---|
1087 | },
|
---|
1088 | function () { Utils.dispose(outerEnumerator); });
|
---|
1089 | });
|
---|
1090 | };
|
---|
1091 |
|
---|
1092 | // Overload:function (inner, outerKeySelector, innerKeySelector, resultSelector)
|
---|
1093 | // Overload:function (inner, outerKeySelector, innerKeySelector, resultSelector, comparer)
|
---|
1094 | Enumerable.prototype.groupJoin = function (inner, outerKeySelector, innerKeySelector, resultSelector, comparer) {
|
---|
1095 | outerKeySelector = Utils.createLambda(outerKeySelector);
|
---|
1096 | innerKeySelector = Utils.createLambda(innerKeySelector);
|
---|
1097 | resultSelector = Utils.createLambda(resultSelector);
|
---|
1098 | var source = this;
|
---|
1099 |
|
---|
1100 | return new Enumerable(function () {
|
---|
1101 | var enumerator = source.getEnumerator();
|
---|
1102 | var lookup = null;
|
---|
1103 |
|
---|
1104 | return new IEnumerator(
|
---|
1105 | function () {
|
---|
1106 | enumerator = source.getEnumerator();
|
---|
1107 | lookup = Enumerable.from(inner).toLookup(innerKeySelector, Functions.Identity, comparer);
|
---|
1108 | },
|
---|
1109 | function () {
|
---|
1110 | if (enumerator.moveNext()) {
|
---|
1111 | var innerElement = lookup.get(outerKeySelector(enumerator.current()));
|
---|
1112 | return this.yieldReturn(resultSelector(enumerator.current(), innerElement));
|
---|
1113 | }
|
---|
1114 | return false;
|
---|
1115 | },
|
---|
1116 | function () { Utils.dispose(enumerator); });
|
---|
1117 | });
|
---|
1118 | };
|
---|
1119 |
|
---|
1120 | /* Set Methods */
|
---|
1121 |
|
---|
1122 | Enumerable.prototype.all = function (predicate) {
|
---|
1123 | predicate = Utils.createLambda(predicate);
|
---|
1124 |
|
---|
1125 | var result = true;
|
---|
1126 | this.forEach(function (x) {
|
---|
1127 | if (!predicate(x)) {
|
---|
1128 | result = false;
|
---|
1129 | return false; // break
|
---|
1130 | }
|
---|
1131 | });
|
---|
1132 | return result;
|
---|
1133 | };
|
---|
1134 |
|
---|
1135 | // Overload:function()
|
---|
1136 | // Overload:function(predicate)
|
---|
1137 | Enumerable.prototype.any = function (predicate) {
|
---|
1138 | predicate = Utils.createLambda(predicate);
|
---|
1139 |
|
---|
1140 | var enumerator = this.getEnumerator();
|
---|
1141 | try {
|
---|
1142 | if (arguments.length == 0) return enumerator.moveNext(); // case:function()
|
---|
1143 |
|
---|
1144 | while (enumerator.moveNext()) // case:function(predicate)
|
---|
1145 | {
|
---|
1146 | if (predicate(enumerator.current())) return true;
|
---|
1147 | }
|
---|
1148 | return false;
|
---|
1149 | }
|
---|
1150 | finally {
|
---|
1151 | Utils.dispose(enumerator);
|
---|
1152 | }
|
---|
1153 | };
|
---|
1154 |
|
---|
1155 | Enumerable.prototype.isEmpty = function () {
|
---|
1156 | return !this.any();
|
---|
1157 | };
|
---|
1158 |
|
---|
1159 | // multiple arguments
|
---|
1160 | Enumerable.prototype.concat = function () {
|
---|
1161 | var source = this;
|
---|
1162 |
|
---|
1163 | if (arguments.length == 1) {
|
---|
1164 | var second = arguments[0];
|
---|
1165 |
|
---|
1166 | return new Enumerable(function () {
|
---|
1167 | var firstEnumerator;
|
---|
1168 | var secondEnumerator;
|
---|
1169 |
|
---|
1170 | return new IEnumerator(
|
---|
1171 | function () { firstEnumerator = source.getEnumerator(); },
|
---|
1172 | function () {
|
---|
1173 | if (secondEnumerator == null) {
|
---|
1174 | if (firstEnumerator.moveNext()) return this.yieldReturn(firstEnumerator.current());
|
---|
1175 | secondEnumerator = Enumerable.from(second).getEnumerator();
|
---|
1176 | }
|
---|
1177 | if (secondEnumerator.moveNext()) return this.yieldReturn(secondEnumerator.current());
|
---|
1178 | return false;
|
---|
1179 | },
|
---|
1180 | function () {
|
---|
1181 | try {
|
---|
1182 | Utils.dispose(firstEnumerator);
|
---|
1183 | }
|
---|
1184 | finally {
|
---|
1185 | Utils.dispose(secondEnumerator);
|
---|
1186 | }
|
---|
1187 | });
|
---|
1188 | });
|
---|
1189 | }
|
---|
1190 | else {
|
---|
1191 | var args = arguments;
|
---|
1192 |
|
---|
1193 | return new Enumerable(function () {
|
---|
1194 | var enumerators;
|
---|
1195 |
|
---|
1196 | return new IEnumerator(
|
---|
1197 | function () {
|
---|
1198 | enumerators = Enumerable.make(source)
|
---|
1199 | .concat(Enumerable.from(args).select(Enumerable.from))
|
---|
1200 | .select(function (x) { return x.getEnumerator() })
|
---|
1201 | .toArray();
|
---|
1202 | },
|
---|
1203 | function () {
|
---|
1204 | while (enumerators.length > 0) {
|
---|
1205 | var enumerator = enumerators[0];
|
---|
1206 |
|
---|
1207 | if (enumerator.moveNext()) {
|
---|
1208 | return this.yieldReturn(enumerator.current());
|
---|
1209 | }
|
---|
1210 | else {
|
---|
1211 | enumerator.dispose();
|
---|
1212 | enumerators.splice(0, 1);
|
---|
1213 | }
|
---|
1214 | }
|
---|
1215 | return this.yieldBreak();
|
---|
1216 | },
|
---|
1217 | function () {
|
---|
1218 | Enumerable.from(enumerators).forEach(Utils.dispose);
|
---|
1219 | });
|
---|
1220 | });
|
---|
1221 | }
|
---|
1222 | };
|
---|
1223 |
|
---|
1224 | Enumerable.prototype.insert = function (index, second) {
|
---|
1225 | var source = this;
|
---|
1226 |
|
---|
1227 | return new Enumerable(function () {
|
---|
1228 | var firstEnumerator;
|
---|
1229 | var secondEnumerator;
|
---|
1230 | var count = 0;
|
---|
1231 | var isEnumerated = false;
|
---|
1232 |
|
---|
1233 | return new IEnumerator(
|
---|
1234 | function () {
|
---|
1235 | firstEnumerator = source.getEnumerator();
|
---|
1236 | secondEnumerator = Enumerable.from(second).getEnumerator();
|
---|
1237 | },
|
---|
1238 | function () {
|
---|
1239 | if (count == index && secondEnumerator.moveNext()) {
|
---|
1240 | isEnumerated = true;
|
---|
1241 | return this.yieldReturn(secondEnumerator.current());
|
---|
1242 | }
|
---|
1243 | if (firstEnumerator.moveNext()) {
|
---|
1244 | count++;
|
---|
1245 | return this.yieldReturn(firstEnumerator.current());
|
---|
1246 | }
|
---|
1247 | if (!isEnumerated && secondEnumerator.moveNext()) {
|
---|
1248 | return this.yieldReturn(secondEnumerator.current());
|
---|
1249 | }
|
---|
1250 | return false;
|
---|
1251 | },
|
---|
1252 | function () {
|
---|
1253 | try {
|
---|
1254 | Utils.dispose(firstEnumerator);
|
---|
1255 | }
|
---|
1256 | finally {
|
---|
1257 | Utils.dispose(secondEnumerator);
|
---|
1258 | }
|
---|
1259 | });
|
---|
1260 | });
|
---|
1261 | };
|
---|
1262 |
|
---|
1263 | Enumerable.prototype.alternate = function (alternateValueOrSequence) {
|
---|
1264 | var source = this;
|
---|
1265 |
|
---|
1266 | return new Enumerable(function () {
|
---|
1267 | var buffer;
|
---|
1268 | var enumerator;
|
---|
1269 | var alternateSequence;
|
---|
1270 | var alternateEnumerator;
|
---|
1271 |
|
---|
1272 | return new IEnumerator(
|
---|
1273 | function () {
|
---|
1274 | if (alternateValueOrSequence instanceof Array || alternateValueOrSequence.getEnumerator != null) {
|
---|
1275 | alternateSequence = Enumerable.from(Enumerable.from(alternateValueOrSequence).toArray()); // freeze
|
---|
1276 | }
|
---|
1277 | else {
|
---|
1278 | alternateSequence = Enumerable.make(alternateValueOrSequence);
|
---|
1279 | }
|
---|
1280 | enumerator = source.getEnumerator();
|
---|
1281 | if (enumerator.moveNext()) buffer = enumerator.current();
|
---|
1282 | },
|
---|
1283 | function () {
|
---|
1284 | while (true) {
|
---|
1285 | if (alternateEnumerator != null) {
|
---|
1286 | if (alternateEnumerator.moveNext()) {
|
---|
1287 | return this.yieldReturn(alternateEnumerator.current());
|
---|
1288 | }
|
---|
1289 | else {
|
---|
1290 | alternateEnumerator = null;
|
---|
1291 | }
|
---|
1292 | }
|
---|
1293 |
|
---|
1294 | if (buffer == null && enumerator.moveNext()) {
|
---|
1295 | buffer = enumerator.current(); // hasNext
|
---|
1296 | alternateEnumerator = alternateSequence.getEnumerator();
|
---|
1297 | continue; // GOTO
|
---|
1298 | }
|
---|
1299 | else if (buffer != null) {
|
---|
1300 | var retVal = buffer;
|
---|
1301 | buffer = null;
|
---|
1302 | return this.yieldReturn(retVal);
|
---|
1303 | }
|
---|
1304 |
|
---|
1305 | return this.yieldBreak();
|
---|
1306 | }
|
---|
1307 | },
|
---|
1308 | function () {
|
---|
1309 | try {
|
---|
1310 | Utils.dispose(enumerator);
|
---|
1311 | }
|
---|
1312 | finally {
|
---|
1313 | Utils.dispose(alternateEnumerator);
|
---|
1314 | }
|
---|
1315 | });
|
---|
1316 | });
|
---|
1317 | };
|
---|
1318 |
|
---|
1319 | // Overload:function(value)
|
---|
1320 | // Overload:function(value, comparer)
|
---|
1321 | Enumerable.prototype.contains = function (value, comparer) {
|
---|
1322 | comparer = comparer || ss.EqualityComparer.def;
|
---|
1323 | var enumerator = this.getEnumerator();
|
---|
1324 | try {
|
---|
1325 | while (enumerator.moveNext()) {
|
---|
1326 | if (comparer.areEqual(enumerator.current(), value)) return true;
|
---|
1327 | }
|
---|
1328 | return false;
|
---|
1329 | }
|
---|
1330 | finally {
|
---|
1331 | Utils.dispose(enumerator);
|
---|
1332 | }
|
---|
1333 | };
|
---|
1334 |
|
---|
1335 | Enumerable.prototype.defaultIfEmpty = function (defaultValue) {
|
---|
1336 | var source = this;
|
---|
1337 | if (defaultValue === undefined) defaultValue = null;
|
---|
1338 |
|
---|
1339 | return new Enumerable(function () {
|
---|
1340 | var enumerator;
|
---|
1341 | var isFirst = true;
|
---|
1342 |
|
---|
1343 | return new IEnumerator(
|
---|
1344 | function () { enumerator = source.getEnumerator(); },
|
---|
1345 | function () {
|
---|
1346 | if (enumerator.moveNext()) {
|
---|
1347 | isFirst = false;
|
---|
1348 | return this.yieldReturn(enumerator.current());
|
---|
1349 | }
|
---|
1350 | else if (isFirst) {
|
---|
1351 | isFirst = false;
|
---|
1352 | return this.yieldReturn(defaultValue);
|
---|
1353 | }
|
---|
1354 | return false;
|
---|
1355 | },
|
---|
1356 | function () { Utils.dispose(enumerator); });
|
---|
1357 | });
|
---|
1358 | };
|
---|
1359 |
|
---|
1360 | // Overload:function()
|
---|
1361 | // Overload:function(comparer)
|
---|
1362 | Enumerable.prototype.distinct = function (comparer) {
|
---|
1363 | return this.except(Enumerable.empty(), comparer);
|
---|
1364 | };
|
---|
1365 |
|
---|
1366 | Enumerable.prototype.distinctUntilChanged = function (compareSelector) {
|
---|
1367 | compareSelector = Utils.createLambda(compareSelector);
|
---|
1368 | var source = this;
|
---|
1369 |
|
---|
1370 | return new Enumerable(function () {
|
---|
1371 | var enumerator;
|
---|
1372 | var compareKey;
|
---|
1373 | var initial;
|
---|
1374 |
|
---|
1375 | return new IEnumerator(
|
---|
1376 | function () {
|
---|
1377 | enumerator = source.getEnumerator();
|
---|
1378 | },
|
---|
1379 | function () {
|
---|
1380 | while (enumerator.moveNext()) {
|
---|
1381 | var key = compareSelector(enumerator.current());
|
---|
1382 |
|
---|
1383 | if (initial) {
|
---|
1384 | initial = false;
|
---|
1385 | compareKey = key;
|
---|
1386 | return this.yieldReturn(enumerator.current());
|
---|
1387 | }
|
---|
1388 |
|
---|
1389 | if (compareKey === key) {
|
---|
1390 | continue;
|
---|
1391 | }
|
---|
1392 |
|
---|
1393 | compareKey = key;
|
---|
1394 | return this.yieldReturn(enumerator.current());
|
---|
1395 | }
|
---|
1396 | return this.yieldBreak();
|
---|
1397 | },
|
---|
1398 | function () { Utils.dispose(enumerator); });
|
---|
1399 | });
|
---|
1400 | };
|
---|
1401 |
|
---|
1402 | // Overload:function(second)
|
---|
1403 | // Overload:function(second, comparer)
|
---|
1404 | Enumerable.prototype.except = function (second, comparer) {
|
---|
1405 | var source = this;
|
---|
1406 |
|
---|
1407 | return new Enumerable(function () {
|
---|
1408 | var enumerator;
|
---|
1409 | var keys;
|
---|
1410 |
|
---|
1411 | return new IEnumerator(
|
---|
1412 | function () {
|
---|
1413 | enumerator = source.getEnumerator();
|
---|
1414 | keys = new (ss.makeGenericType(ss.Dictionary$2, [Object, Object]))(null, comparer);
|
---|
1415 | Enumerable.from(second).forEach(function (key) { keys.add(key); });
|
---|
1416 | },
|
---|
1417 | function () {
|
---|
1418 | while (enumerator.moveNext()) {
|
---|
1419 | var current = enumerator.current();
|
---|
1420 | if (!keys.containsKey(current)) {
|
---|
1421 | keys.add(current);
|
---|
1422 | return this.yieldReturn(current);
|
---|
1423 | }
|
---|
1424 | }
|
---|
1425 | return false;
|
---|
1426 | },
|
---|
1427 | function () { Utils.dispose(enumerator); });
|
---|
1428 | });
|
---|
1429 | };
|
---|
1430 |
|
---|
1431 | // Overload:function(second)
|
---|
1432 | // Overload:function(second, comparer)
|
---|
1433 | Enumerable.prototype.intersect = function (second, comparer) {
|
---|
1434 | var source = this;
|
---|
1435 |
|
---|
1436 | return new Enumerable(function () {
|
---|
1437 | var enumerator;
|
---|
1438 | var keys;
|
---|
1439 | var outs;
|
---|
1440 |
|
---|
1441 | return new IEnumerator(
|
---|
1442 | function () {
|
---|
1443 | enumerator = source.getEnumerator();
|
---|
1444 |
|
---|
1445 | keys = new (ss.makeGenericType(ss.Dictionary$2, [Object, Object]))(null, comparer);
|
---|
1446 | Enumerable.from(second).forEach(function (key) { keys.add(key); });
|
---|
1447 | outs = new (ss.makeGenericType(ss.Dictionary$2, [Object, Object]))(null, comparer);
|
---|
1448 | },
|
---|
1449 | function () {
|
---|
1450 | while (enumerator.moveNext()) {
|
---|
1451 | var current = enumerator.current();
|
---|
1452 | if (!outs.containsKey(current) && keys.containsKey(current)) {
|
---|
1453 | outs.add(current);
|
---|
1454 | return this.yieldReturn(current);
|
---|
1455 | }
|
---|
1456 | }
|
---|
1457 | return false;
|
---|
1458 | },
|
---|
1459 | function () { Utils.dispose(enumerator); });
|
---|
1460 | });
|
---|
1461 | };
|
---|
1462 |
|
---|
1463 | // Overload:function(second)
|
---|
1464 | // Overload:function(second, comparer)
|
---|
1465 | Enumerable.prototype.sequenceEqual = function (second, comparer) {
|
---|
1466 | comparer = comparer || ss.EqualityComparer.def;
|
---|
1467 |
|
---|
1468 | var firstEnumerator = this.getEnumerator();
|
---|
1469 | try {
|
---|
1470 | var secondEnumerator = Enumerable.from(second).getEnumerator();
|
---|
1471 | try {
|
---|
1472 | while (firstEnumerator.moveNext()) {
|
---|
1473 | if (!secondEnumerator.moveNext()
|
---|
1474 | || !comparer.areEqual(firstEnumerator.current(), secondEnumerator.current())) {
|
---|
1475 | return false;
|
---|
1476 | }
|
---|
1477 | }
|
---|
1478 |
|
---|
1479 | if (secondEnumerator.moveNext()) return false;
|
---|
1480 | return true;
|
---|
1481 | }
|
---|
1482 | finally {
|
---|
1483 | Utils.dispose(secondEnumerator);
|
---|
1484 | }
|
---|
1485 | }
|
---|
1486 | finally {
|
---|
1487 | Utils.dispose(firstEnumerator);
|
---|
1488 | }
|
---|
1489 | };
|
---|
1490 |
|
---|
1491 | Enumerable.prototype.union = function (second, comparer) {
|
---|
1492 | var source = this;
|
---|
1493 |
|
---|
1494 | return new Enumerable(function () {
|
---|
1495 | var firstEnumerator;
|
---|
1496 | var secondEnumerator;
|
---|
1497 | var keys;
|
---|
1498 |
|
---|
1499 | return new IEnumerator(
|
---|
1500 | function () {
|
---|
1501 | firstEnumerator = source.getEnumerator();
|
---|
1502 | keys = new (ss.makeGenericType(ss.Dictionary$2, [Object, Object]))(null, comparer);
|
---|
1503 | },
|
---|
1504 | function () {
|
---|
1505 | var current;
|
---|
1506 | if (secondEnumerator === undefined) {
|
---|
1507 | while (firstEnumerator.moveNext()) {
|
---|
1508 | current = firstEnumerator.current();
|
---|
1509 | if (!keys.containsKey(current)) {
|
---|
1510 | keys.add(current);
|
---|
1511 | return this.yieldReturn(current);
|
---|
1512 | }
|
---|
1513 | }
|
---|
1514 | secondEnumerator = Enumerable.from(second).getEnumerator();
|
---|
1515 | }
|
---|
1516 | while (secondEnumerator.moveNext()) {
|
---|
1517 | current = secondEnumerator.current();
|
---|
1518 | if (!keys.containsKey(current)) {
|
---|
1519 | keys.add(current);
|
---|
1520 | return this.yieldReturn(current);
|
---|
1521 | }
|
---|
1522 | }
|
---|
1523 | return false;
|
---|
1524 | },
|
---|
1525 | function () {
|
---|
1526 | try {
|
---|
1527 | Utils.dispose(firstEnumerator);
|
---|
1528 | }
|
---|
1529 | finally {
|
---|
1530 | Utils.dispose(secondEnumerator);
|
---|
1531 | }
|
---|
1532 | });
|
---|
1533 | });
|
---|
1534 | };
|
---|
1535 |
|
---|
1536 | /* Ordering Methods */
|
---|
1537 |
|
---|
1538 | // Overload:function()
|
---|
1539 | // Overload:function(keySelector)
|
---|
1540 | // Overload:function(keySelector, comparer)
|
---|
1541 | Enumerable.prototype.orderBy = function (keySelector, comparer) {
|
---|
1542 | return new OrderedEnumerable(this, keySelector, comparer, false);
|
---|
1543 | };
|
---|
1544 |
|
---|
1545 | // Overload:function()
|
---|
1546 | // Overload:function(keySelector)
|
---|
1547 | // Overload:function(keySelector, comparer)
|
---|
1548 | Enumerable.prototype.orderByDescending = function (keySelector, comparer) {
|
---|
1549 | return new OrderedEnumerable(this, keySelector, comparer, true);
|
---|
1550 | };
|
---|
1551 |
|
---|
1552 | Enumerable.prototype.reverse = function () {
|
---|
1553 | var source = this;
|
---|
1554 |
|
---|
1555 | return new Enumerable(function () {
|
---|
1556 | var buffer;
|
---|
1557 | var index;
|
---|
1558 |
|
---|
1559 | return new IEnumerator(
|
---|
1560 | function () {
|
---|
1561 | buffer = source.toArray();
|
---|
1562 | index = buffer.length;
|
---|
1563 | },
|
---|
1564 | function () {
|
---|
1565 | return (index > 0)
|
---|
1566 | ? this.yieldReturn(buffer[--index])
|
---|
1567 | : false;
|
---|
1568 | },
|
---|
1569 | Functions.Blank);
|
---|
1570 | });
|
---|
1571 | };
|
---|
1572 |
|
---|
1573 | Enumerable.prototype.shuffle = function () {
|
---|
1574 | var source = this;
|
---|
1575 |
|
---|
1576 | return new Enumerable(function () {
|
---|
1577 | var buffer;
|
---|
1578 |
|
---|
1579 | return new IEnumerator(
|
---|
1580 | function () { buffer = source.toArray(); },
|
---|
1581 | function () {
|
---|
1582 | if (buffer.length > 0) {
|
---|
1583 | var i = Math.floor(Math.random() * buffer.length);
|
---|
1584 | return this.yieldReturn(buffer.splice(i, 1)[0]);
|
---|
1585 | }
|
---|
1586 | return false;
|
---|
1587 | },
|
---|
1588 | Functions.Blank);
|
---|
1589 | });
|
---|
1590 | };
|
---|
1591 |
|
---|
1592 | Enumerable.prototype.weightedSample = function (weightSelector) {
|
---|
1593 | weightSelector = Utils.createLambda(weightSelector);
|
---|
1594 | var source = this;
|
---|
1595 |
|
---|
1596 | return new Enumerable(function () {
|
---|
1597 | var sortedByBound;
|
---|
1598 | var totalWeight = 0;
|
---|
1599 |
|
---|
1600 | return new IEnumerator(
|
---|
1601 | function () {
|
---|
1602 | sortedByBound = source
|
---|
1603 | .choose(function (x) {
|
---|
1604 | var weight = weightSelector(x);
|
---|
1605 | if (weight <= 0) return null; // ignore 0
|
---|
1606 |
|
---|
1607 | totalWeight += weight;
|
---|
1608 | return { value: x, bound: totalWeight };
|
---|
1609 | })
|
---|
1610 | .toArray();
|
---|
1611 | },
|
---|
1612 | function () {
|
---|
1613 | if (sortedByBound.length > 0) {
|
---|
1614 | var draw = Math.floor(Math.random() * totalWeight) + 1;
|
---|
1615 |
|
---|
1616 | var lower = -1;
|
---|
1617 | var upper = sortedByBound.length;
|
---|
1618 | while (upper - lower > 1) {
|
---|
1619 | var index = Math.floor((lower + upper) / 2);
|
---|
1620 | if (sortedByBound[index].bound >= draw) {
|
---|
1621 | upper = index;
|
---|
1622 | }
|
---|
1623 | else {
|
---|
1624 | lower = index;
|
---|
1625 | }
|
---|
1626 | }
|
---|
1627 |
|
---|
1628 | return this.yieldReturn(sortedByBound[upper].value);
|
---|
1629 | }
|
---|
1630 |
|
---|
1631 | return this.yieldBreak();
|
---|
1632 | },
|
---|
1633 | Functions.Blank);
|
---|
1634 | });
|
---|
1635 | };
|
---|
1636 |
|
---|
1637 | /* Grouping Methods */
|
---|
1638 |
|
---|
1639 | // Overload:function(keySelector)
|
---|
1640 | // Overload:function(keySelector,elementSelector)
|
---|
1641 | // Overload:function(keySelector,elementSelector,resultSelector)
|
---|
1642 | // Overload:function(keySelector,elementSelector,resultSelector,comparer)
|
---|
1643 | Enumerable.prototype.groupBy = function (keySelector, elementSelector, resultSelector, comparer) {
|
---|
1644 | var source = this;
|
---|
1645 | keySelector = Utils.createLambda(keySelector);
|
---|
1646 | elementSelector = Utils.createLambda(elementSelector);
|
---|
1647 | if (resultSelector != null) resultSelector = Utils.createLambda(resultSelector);
|
---|
1648 |
|
---|
1649 | return new Enumerable(function () {
|
---|
1650 | var enumerator;
|
---|
1651 |
|
---|
1652 | return new IEnumerator(
|
---|
1653 | function () {
|
---|
1654 | enumerator = source.toLookup(keySelector, elementSelector, comparer)
|
---|
1655 | .toEnumerable()
|
---|
1656 | .getEnumerator();
|
---|
1657 | },
|
---|
1658 | function () {
|
---|
1659 | while (enumerator.moveNext()) {
|
---|
1660 | return (resultSelector == null)
|
---|
1661 | ? this.yieldReturn(enumerator.current())
|
---|
1662 | : this.yieldReturn(resultSelector(enumerator.current().key(), enumerator.current()));
|
---|
1663 | }
|
---|
1664 | return false;
|
---|
1665 | },
|
---|
1666 | function () { Utils.dispose(enumerator); });
|
---|
1667 | });
|
---|
1668 | };
|
---|
1669 |
|
---|
1670 | // Overload:function(keySelector)
|
---|
1671 | // Overload:function(keySelector,elementSelector)
|
---|
1672 | // Overload:function(keySelector,elementSelector,resultSelector)
|
---|
1673 | // Overload:function(keySelector,elementSelector,resultSelector,comperer)
|
---|
1674 | Enumerable.prototype.partitionBy = function (keySelector, elementSelector, resultSelector, comparer) {
|
---|
1675 | var source = this;
|
---|
1676 | keySelector = Utils.createLambda(keySelector);
|
---|
1677 | elementSelector = Utils.createLambda(elementSelector);
|
---|
1678 | comparer = comparer || ss.EqualityComparer.def;
|
---|
1679 | var hasResultSelector;
|
---|
1680 | if (resultSelector == null) {
|
---|
1681 | hasResultSelector = false;
|
---|
1682 | resultSelector = function (key, group) { return new Grouping(key, group); };
|
---|
1683 | }
|
---|
1684 | else {
|
---|
1685 | hasResultSelector = true;
|
---|
1686 | resultSelector = Utils.createLambda(resultSelector);
|
---|
1687 | }
|
---|
1688 |
|
---|
1689 | return new Enumerable(function () {
|
---|
1690 | var enumerator;
|
---|
1691 | var key;
|
---|
1692 | var group = [];
|
---|
1693 |
|
---|
1694 | return new IEnumerator(
|
---|
1695 | function () {
|
---|
1696 | enumerator = source.getEnumerator();
|
---|
1697 | if (enumerator.moveNext()) {
|
---|
1698 | key = keySelector(enumerator.current());
|
---|
1699 | group.push(elementSelector(enumerator.current()));
|
---|
1700 | }
|
---|
1701 | },
|
---|
1702 | function () {
|
---|
1703 | var hasNext;
|
---|
1704 | while ((hasNext = enumerator.moveNext()) == true) {
|
---|
1705 | if (comparer.areEqual(key, keySelector(enumerator.current()))) {
|
---|
1706 | group.push(elementSelector(enumerator.current()));
|
---|
1707 | }
|
---|
1708 | else break;
|
---|
1709 | }
|
---|
1710 |
|
---|
1711 | if (group.length > 0) {
|
---|
1712 | var result = (hasResultSelector)
|
---|
1713 | ? resultSelector(key, Enumerable.from(group))
|
---|
1714 | : resultSelector(key, group);
|
---|
1715 | if (hasNext) {
|
---|
1716 | key = keySelector(enumerator.current());
|
---|
1717 | group = [elementSelector(enumerator.current())];
|
---|
1718 | }
|
---|
1719 | else group = [];
|
---|
1720 |
|
---|
1721 | return this.yieldReturn(result);
|
---|
1722 | }
|
---|
1723 |
|
---|
1724 | return false;
|
---|
1725 | },
|
---|
1726 | function () { Utils.dispose(enumerator); });
|
---|
1727 | });
|
---|
1728 | };
|
---|
1729 |
|
---|
1730 | Enumerable.prototype.buffer = function (count) {
|
---|
1731 | var source = this;
|
---|
1732 |
|
---|
1733 | return new Enumerable(function () {
|
---|
1734 | var enumerator;
|
---|
1735 |
|
---|
1736 | return new IEnumerator(
|
---|
1737 | function () { enumerator = source.getEnumerator(); },
|
---|
1738 | function () {
|
---|
1739 | var array = [];
|
---|
1740 | var index = 0;
|
---|
1741 | while (enumerator.moveNext()) {
|
---|
1742 | array.push(enumerator.current());
|
---|
1743 | if (++index >= count) return this.yieldReturn(array);
|
---|
1744 | }
|
---|
1745 | if (array.length > 0) return this.yieldReturn(array);
|
---|
1746 | return false;
|
---|
1747 | },
|
---|
1748 | function () { Utils.dispose(enumerator); });
|
---|
1749 | });
|
---|
1750 | };
|
---|
1751 |
|
---|
1752 | /* Aggregate Methods */
|
---|
1753 |
|
---|
1754 | // Overload:function(func)
|
---|
1755 | // Overload:function(seed,func)
|
---|
1756 | // Overload:function(seed,func,resultSelector)
|
---|
1757 | Enumerable.prototype.aggregate = function (seed, func, resultSelector) {
|
---|
1758 | resultSelector = Utils.createLambda(resultSelector);
|
---|
1759 | return resultSelector(this.scan(seed, func, resultSelector).last());
|
---|
1760 | };
|
---|
1761 |
|
---|
1762 | // Overload:function()
|
---|
1763 | // Overload:function(selector)
|
---|
1764 | Enumerable.prototype.average = function (selector) {
|
---|
1765 | selector = Utils.createLambda(selector);
|
---|
1766 |
|
---|
1767 | var sum = 0;
|
---|
1768 | var count = 0;
|
---|
1769 | this.forEach(function (x) {
|
---|
1770 | sum += selector(x);
|
---|
1771 | ++count;
|
---|
1772 | });
|
---|
1773 |
|
---|
1774 | return sum / count;
|
---|
1775 | };
|
---|
1776 |
|
---|
1777 | // Overload:function()
|
---|
1778 | // Overload:function(predicate)
|
---|
1779 | Enumerable.prototype.count = function (predicate) {
|
---|
1780 | predicate = (predicate == null) ? Functions.True : Utils.createLambda(predicate);
|
---|
1781 |
|
---|
1782 | var count = 0;
|
---|
1783 | this.forEach(function (x, i) {
|
---|
1784 | if (predicate(x, i))++count;
|
---|
1785 | });
|
---|
1786 | return count;
|
---|
1787 | };
|
---|
1788 |
|
---|
1789 | // Overload:function()
|
---|
1790 | // Overload:function(selector)
|
---|
1791 | Enumerable.prototype.max = function (selector) {
|
---|
1792 | if (selector == null) selector = Functions.Identity;
|
---|
1793 | return this.select(selector).aggregate(function (a, b) { return (a > b) ? a : b; });
|
---|
1794 | };
|
---|
1795 |
|
---|
1796 | // Overload:function()
|
---|
1797 | // Overload:function(selector)
|
---|
1798 | Enumerable.prototype.min = function (selector) {
|
---|
1799 | if (selector == null) selector = Functions.Identity;
|
---|
1800 | return this.select(selector).aggregate(function (a, b) { return (a < b) ? a : b; });
|
---|
1801 | };
|
---|
1802 |
|
---|
1803 | Enumerable.prototype.maxBy = function (keySelector) {
|
---|
1804 | keySelector = Utils.createLambda(keySelector);
|
---|
1805 | return this.aggregate(function (a, b) { return (keySelector(a) > keySelector(b)) ? a : b; });
|
---|
1806 | };
|
---|
1807 |
|
---|
1808 | Enumerable.prototype.minBy = function (keySelector) {
|
---|
1809 | keySelector = Utils.createLambda(keySelector);
|
---|
1810 | return this.aggregate(function (a, b) { return (keySelector(a) < keySelector(b)) ? a : b; });
|
---|
1811 | };
|
---|
1812 |
|
---|
1813 | // Overload:function()
|
---|
1814 | // Overload:function(selector)
|
---|
1815 | Enumerable.prototype.sum = function (selector) {
|
---|
1816 | if (selector == null) selector = Functions.Identity;
|
---|
1817 | return this.select(selector).aggregate(0, function (a, b) { return a + b; });
|
---|
1818 | };
|
---|
1819 |
|
---|
1820 | /* Paging Methods */
|
---|
1821 |
|
---|
1822 | Enumerable.prototype.elementAt = function (index) {
|
---|
1823 | var value;
|
---|
1824 | var found = false;
|
---|
1825 | this.forEach(function (x, i) {
|
---|
1826 | if (i == index) {
|
---|
1827 | value = x;
|
---|
1828 | found = true;
|
---|
1829 | return false;
|
---|
1830 | }
|
---|
1831 | });
|
---|
1832 |
|
---|
1833 | if (!found) throw new Error("index is less than 0 or greater than or equal to the number of elements in source.");
|
---|
1834 | return value;
|
---|
1835 | };
|
---|
1836 |
|
---|
1837 | Enumerable.prototype.elementAtOrDefault = function (index, defaultValue) {
|
---|
1838 | if (defaultValue === undefined) defaultValue = null;
|
---|
1839 | var value;
|
---|
1840 | var found = false;
|
---|
1841 | this.forEach(function (x, i) {
|
---|
1842 | if (i == index) {
|
---|
1843 | value = x;
|
---|
1844 | found = true;
|
---|
1845 | return false;
|
---|
1846 | }
|
---|
1847 | });
|
---|
1848 |
|
---|
1849 | return (!found) ? defaultValue : value;
|
---|
1850 | };
|
---|
1851 |
|
---|
1852 | // Overload:function()
|
---|
1853 | // Overload:function(predicate)
|
---|
1854 | Enumerable.prototype.first = function (predicate) {
|
---|
1855 | if (predicate != null) return this.where(predicate).first();
|
---|
1856 |
|
---|
1857 | var value;
|
---|
1858 | var found = false;
|
---|
1859 | this.forEach(function (x) {
|
---|
1860 | value = x;
|
---|
1861 | found = true;
|
---|
1862 | return false;
|
---|
1863 | });
|
---|
1864 |
|
---|
1865 | if (!found) throw new Error("first:No element satisfies the condition.");
|
---|
1866 | return value;
|
---|
1867 | };
|
---|
1868 |
|
---|
1869 | Enumerable.prototype.firstOrDefault = function (predicate, defaultValue) {
|
---|
1870 | if (defaultValue === undefined) defaultValue = null;
|
---|
1871 | if (predicate != null) return this.where(predicate).firstOrDefault(null, defaultValue);
|
---|
1872 |
|
---|
1873 | var value;
|
---|
1874 | var found = false;
|
---|
1875 | this.forEach(function (x) {
|
---|
1876 | value = x;
|
---|
1877 | found = true;
|
---|
1878 | return false;
|
---|
1879 | });
|
---|
1880 | return (!found) ? defaultValue : value;
|
---|
1881 | };
|
---|
1882 |
|
---|
1883 | // Overload:function()
|
---|
1884 | // Overload:function(predicate)
|
---|
1885 | Enumerable.prototype.last = function (predicate) {
|
---|
1886 | if (predicate != null) return this.where(predicate).last();
|
---|
1887 |
|
---|
1888 | var value;
|
---|
1889 | var found = false;
|
---|
1890 | this.forEach(function (x) {
|
---|
1891 | found = true;
|
---|
1892 | value = x;
|
---|
1893 | });
|
---|
1894 |
|
---|
1895 | if (!found) throw new Error("last:No element satisfies the condition.");
|
---|
1896 | return value;
|
---|
1897 | };
|
---|
1898 |
|
---|
1899 | // Overload:function(defaultValue)
|
---|
1900 | // Overload:function(defaultValue,predicate)
|
---|
1901 | Enumerable.prototype.lastOrDefault = function (predicate, defaultValue) {
|
---|
1902 | if (defaultValue === undefined) defaultValue = null;
|
---|
1903 | if (predicate != null) return this.where(predicate).lastOrDefault(null, defaultValue);
|
---|
1904 |
|
---|
1905 | var value;
|
---|
1906 | var found = false;
|
---|
1907 | this.forEach(function (x) {
|
---|
1908 | found = true;
|
---|
1909 | value = x;
|
---|
1910 | });
|
---|
1911 | return (!found) ? defaultValue : value;
|
---|
1912 | };
|
---|
1913 |
|
---|
1914 | // Overload:function()
|
---|
1915 | // Overload:function(predicate)
|
---|
1916 | Enumerable.prototype.single = function (predicate) {
|
---|
1917 | if (predicate != null) return this.where(predicate).single();
|
---|
1918 |
|
---|
1919 | var value;
|
---|
1920 | var found = false;
|
---|
1921 | this.forEach(function (x) {
|
---|
1922 | if (!found) {
|
---|
1923 | found = true;
|
---|
1924 | value = x;
|
---|
1925 | } else throw new Error("single:sequence contains more than one element.");
|
---|
1926 | });
|
---|
1927 |
|
---|
1928 | if (!found) throw new Error("single:No element satisfies the condition.");
|
---|
1929 | return value;
|
---|
1930 | };
|
---|
1931 |
|
---|
1932 | // Overload:function(defaultValue)
|
---|
1933 | // Overload:function(defaultValue,predicate)
|
---|
1934 | Enumerable.prototype.singleOrDefault = function (predicate, defaultValue) {
|
---|
1935 | if (defaultValue === undefined) defaultValue = null;
|
---|
1936 | if (predicate != null) return this.where(predicate).singleOrDefault(null, defaultValue);
|
---|
1937 |
|
---|
1938 | var value;
|
---|
1939 | var found = false;
|
---|
1940 | this.forEach(function (x) {
|
---|
1941 | if (!found) {
|
---|
1942 | found = true;
|
---|
1943 | value = x;
|
---|
1944 | } else throw new Error("single:sequence contains more than one element.");
|
---|
1945 | });
|
---|
1946 |
|
---|
1947 | return (!found) ? defaultValue : value;
|
---|
1948 | };
|
---|
1949 |
|
---|
1950 | Enumerable.prototype.skip = function (count) {
|
---|
1951 | var source = this;
|
---|
1952 |
|
---|
1953 | return new Enumerable(function () {
|
---|
1954 | var enumerator;
|
---|
1955 | var index = 0;
|
---|
1956 |
|
---|
1957 | return new IEnumerator(
|
---|
1958 | function () {
|
---|
1959 | enumerator = source.getEnumerator();
|
---|
1960 | while (index++ < count && enumerator.moveNext()) {
|
---|
1961 | }
|
---|
1962 | ;
|
---|
1963 | },
|
---|
1964 | function () {
|
---|
1965 | return (enumerator.moveNext())
|
---|
1966 | ? this.yieldReturn(enumerator.current())
|
---|
1967 | : false;
|
---|
1968 | },
|
---|
1969 | function () { Utils.dispose(enumerator); });
|
---|
1970 | });
|
---|
1971 | };
|
---|
1972 |
|
---|
1973 | // Overload:function(predicate<element>)
|
---|
1974 | // Overload:function(predicate<element,index>)
|
---|
1975 | Enumerable.prototype.skipWhile = function (predicate) {
|
---|
1976 | predicate = Utils.createLambda(predicate);
|
---|
1977 | var source = this;
|
---|
1978 |
|
---|
1979 | return new Enumerable(function () {
|
---|
1980 | var enumerator;
|
---|
1981 | var index = 0;
|
---|
1982 | var isSkipEnd = false;
|
---|
1983 |
|
---|
1984 | return new IEnumerator(
|
---|
1985 | function () { enumerator = source.getEnumerator(); },
|
---|
1986 | function () {
|
---|
1987 | while (!isSkipEnd) {
|
---|
1988 | if (enumerator.moveNext()) {
|
---|
1989 | if (!predicate(enumerator.current(), index++)) {
|
---|
1990 | isSkipEnd = true;
|
---|
1991 | return this.yieldReturn(enumerator.current());
|
---|
1992 | }
|
---|
1993 | continue;
|
---|
1994 | } else return false;
|
---|
1995 | }
|
---|
1996 |
|
---|
1997 | return (enumerator.moveNext())
|
---|
1998 | ? this.yieldReturn(enumerator.current())
|
---|
1999 | : false;
|
---|
2000 |
|
---|
2001 | },
|
---|
2002 | function () { Utils.dispose(enumerator); });
|
---|
2003 | });
|
---|
2004 | };
|
---|
2005 |
|
---|
2006 | Enumerable.prototype.take = function (count) {
|
---|
2007 | var source = this;
|
---|
2008 |
|
---|
2009 | return new Enumerable(function () {
|
---|
2010 | var enumerator;
|
---|
2011 | var index = 0;
|
---|
2012 |
|
---|
2013 | return new IEnumerator(
|
---|
2014 | function () { enumerator = source.getEnumerator(); },
|
---|
2015 | function () {
|
---|
2016 | return (index++ < count && enumerator.moveNext())
|
---|
2017 | ? this.yieldReturn(enumerator.current())
|
---|
2018 | : false;
|
---|
2019 | },
|
---|
2020 | function () { Utils.dispose(enumerator); }
|
---|
2021 | );
|
---|
2022 | });
|
---|
2023 | };
|
---|
2024 |
|
---|
2025 | // Overload:function(predicate<element>)
|
---|
2026 | // Overload:function(predicate<element,index>)
|
---|
2027 | Enumerable.prototype.takeWhile = function (predicate) {
|
---|
2028 | predicate = Utils.createLambda(predicate);
|
---|
2029 | var source = this;
|
---|
2030 |
|
---|
2031 | return new Enumerable(function () {
|
---|
2032 | var enumerator;
|
---|
2033 | var index = 0;
|
---|
2034 |
|
---|
2035 | return new IEnumerator(
|
---|
2036 | function () { enumerator = source.getEnumerator(); },
|
---|
2037 | function () {
|
---|
2038 | return (enumerator.moveNext() && predicate(enumerator.current(), index++))
|
---|
2039 | ? this.yieldReturn(enumerator.current())
|
---|
2040 | : false;
|
---|
2041 | },
|
---|
2042 | function () { Utils.dispose(enumerator); });
|
---|
2043 | });
|
---|
2044 | };
|
---|
2045 |
|
---|
2046 | // Overload:function()
|
---|
2047 | // Overload:function(count)
|
---|
2048 | Enumerable.prototype.takeExceptLast = function (count) {
|
---|
2049 | if (count == null) count = 1;
|
---|
2050 | var source = this;
|
---|
2051 |
|
---|
2052 | return new Enumerable(function () {
|
---|
2053 | if (count <= 0) return source.getEnumerator(); // do nothing
|
---|
2054 |
|
---|
2055 | var enumerator;
|
---|
2056 | var q = [];
|
---|
2057 |
|
---|
2058 | return new IEnumerator(
|
---|
2059 | function () { enumerator = source.getEnumerator(); },
|
---|
2060 | function () {
|
---|
2061 | while (enumerator.moveNext()) {
|
---|
2062 | if (q.length == count) {
|
---|
2063 | q.push(enumerator.current());
|
---|
2064 | return this.yieldReturn(q.shift());
|
---|
2065 | }
|
---|
2066 | q.push(enumerator.current());
|
---|
2067 | }
|
---|
2068 | return false;
|
---|
2069 | },
|
---|
2070 | function () { Utils.dispose(enumerator); });
|
---|
2071 | });
|
---|
2072 | };
|
---|
2073 |
|
---|
2074 | Enumerable.prototype.takeFromLast = function (count) {
|
---|
2075 | if (count <= 0 || count == null) return Enumerable.empty();
|
---|
2076 | var source = this;
|
---|
2077 |
|
---|
2078 | return new Enumerable(function () {
|
---|
2079 | var sourceEnumerator;
|
---|
2080 | var enumerator;
|
---|
2081 | var q = [];
|
---|
2082 |
|
---|
2083 | return new IEnumerator(
|
---|
2084 | function () { sourceEnumerator = source.getEnumerator(); },
|
---|
2085 | function () {
|
---|
2086 | while (sourceEnumerator.moveNext()) {
|
---|
2087 | if (q.length == count) q.shift();
|
---|
2088 | q.push(sourceEnumerator.current());
|
---|
2089 | }
|
---|
2090 | if (enumerator == null) {
|
---|
2091 | enumerator = Enumerable.from(q).getEnumerator();
|
---|
2092 | }
|
---|
2093 | return (enumerator.moveNext())
|
---|
2094 | ? this.yieldReturn(enumerator.current())
|
---|
2095 | : false;
|
---|
2096 | },
|
---|
2097 | function () { Utils.dispose(enumerator); });
|
---|
2098 | });
|
---|
2099 | };
|
---|
2100 |
|
---|
2101 | // Overload:function(item)
|
---|
2102 | // Overload:function(item, comparer)
|
---|
2103 | // Overload:function(predicate)
|
---|
2104 | Enumerable.prototype.indexOf = function (item, comparer) {
|
---|
2105 | var found = null;
|
---|
2106 |
|
---|
2107 | // item as predicate
|
---|
2108 | if (typeof (item) === Types.Function) {
|
---|
2109 | this.forEach(function (x, i) {
|
---|
2110 | if (item(x, i)) {
|
---|
2111 | found = i;
|
---|
2112 | return false;
|
---|
2113 | }
|
---|
2114 | });
|
---|
2115 | }
|
---|
2116 | else {
|
---|
2117 | comparer = comparer || ss.EqualityComparer.def;
|
---|
2118 | this.forEach(function (x, i) {
|
---|
2119 | if (comparer.areEqual(x, item)) {
|
---|
2120 | found = i;
|
---|
2121 | return false;
|
---|
2122 | }
|
---|
2123 | });
|
---|
2124 | }
|
---|
2125 |
|
---|
2126 | return (found !== null) ? found : -1;
|
---|
2127 | };
|
---|
2128 |
|
---|
2129 | // Overload:function(item)
|
---|
2130 | // Overload:function(item, comparer)
|
---|
2131 | // Overload:function(predicate)
|
---|
2132 | Enumerable.prototype.lastIndexOf = function (item, comparer) {
|
---|
2133 | var result = -1;
|
---|
2134 |
|
---|
2135 | // item as predicate
|
---|
2136 | if (typeof (item) === Types.Function) {
|
---|
2137 | this.forEach(function (x, i) {
|
---|
2138 | if (item(x, i)) result = i;
|
---|
2139 | });
|
---|
2140 | }
|
---|
2141 | else {
|
---|
2142 | comparer = comparer || ss.EqualityComparer.def;
|
---|
2143 | this.forEach(function (x, i) {
|
---|
2144 | if (comparer.areEqual(x, item)) result = i;
|
---|
2145 | });
|
---|
2146 | }
|
---|
2147 |
|
---|
2148 | return result;
|
---|
2149 | };
|
---|
2150 |
|
---|
2151 | /* Convert Methods */
|
---|
2152 |
|
---|
2153 | Enumerable.prototype.asEnumerable = function () {
|
---|
2154 | return Enumerable.from(this);
|
---|
2155 | };
|
---|
2156 |
|
---|
2157 | Enumerable.prototype.toArray = function () {
|
---|
2158 | var array = [];
|
---|
2159 | this.forEach(function (x) { array.push(x); });
|
---|
2160 | return array;
|
---|
2161 | };
|
---|
2162 |
|
---|
2163 | // Overload:function(keySelector)
|
---|
2164 | // Overload:function(keySelector, elementSelector)
|
---|
2165 | // Overload:function(keySelector, elementSelector, comparer)
|
---|
2166 | Enumerable.prototype.toLookup = function (keySelector, elementSelector, comparer) {
|
---|
2167 | keySelector = Utils.createLambda(keySelector);
|
---|
2168 | elementSelector = Utils.createLambda(elementSelector);
|
---|
2169 |
|
---|
2170 | var dict = new (ss.makeGenericType(ss.Dictionary$2, [Object, Object]))(null, comparer);
|
---|
2171 | var order = [];
|
---|
2172 | this.forEach(function (x) {
|
---|
2173 | var key = keySelector(x);
|
---|
2174 | var element = elementSelector(x);
|
---|
2175 |
|
---|
2176 | var array = { $: null };
|
---|
2177 | if (dict.tryGetValue(key, array)) {
|
---|
2178 | array.$.push(element);
|
---|
2179 | }
|
---|
2180 | else {
|
---|
2181 | order.push(key);
|
---|
2182 | dict.add(key, [element]);
|
---|
2183 | }
|
---|
2184 | });
|
---|
2185 | return new Lookup(dict, order);
|
---|
2186 | };
|
---|
2187 |
|
---|
2188 | Enumerable.prototype.toObject = function (keySelector, elementSelector) {
|
---|
2189 | keySelector = Utils.createLambda(keySelector);
|
---|
2190 | elementSelector = Utils.createLambda(elementSelector);
|
---|
2191 |
|
---|
2192 | var obj = {};
|
---|
2193 | this.forEach(function (x) {
|
---|
2194 | obj[keySelector(x)] = elementSelector(x);
|
---|
2195 | });
|
---|
2196 | return obj;
|
---|
2197 | };
|
---|
2198 |
|
---|
2199 | // Overload:function(keySelector, elementSelector, keyType, valueType)
|
---|
2200 | // Overload:function(keySelector, elementSelector, keyType, valueType, comparer)
|
---|
2201 | Enumerable.prototype.toDictionary = function (keySelector, elementSelector, keyType, valueType, comparer) {
|
---|
2202 | keySelector = Utils.createLambda(keySelector);
|
---|
2203 | elementSelector = Utils.createLambda(elementSelector);
|
---|
2204 |
|
---|
2205 | var dict = new (ss.makeGenericType(ss.Dictionary$2, [keyType, valueType]))(null, comparer);
|
---|
2206 | this.forEach(function (x) {
|
---|
2207 | dict.add(keySelector(x), elementSelector(x));
|
---|
2208 | });
|
---|
2209 | return dict;
|
---|
2210 | };
|
---|
2211 |
|
---|
2212 | // Overload:function()
|
---|
2213 | // Overload:function(replacer)
|
---|
2214 | // Overload:function(replacer, space)
|
---|
2215 | Enumerable.prototype.toJSONString = function (replacer, space) {
|
---|
2216 | if (typeof JSON === Types.Undefined || JSON.stringify == null) {
|
---|
2217 | throw new Error("toJSONString can't find JSON.stringify. This works native JSON support Browser or include json2.js");
|
---|
2218 | }
|
---|
2219 | return JSON.stringify(this.toArray(), replacer, space);
|
---|
2220 | };
|
---|
2221 |
|
---|
2222 | // Overload:function()
|
---|
2223 | // Overload:function(separator)
|
---|
2224 | // Overload:function(separator,selector)
|
---|
2225 | Enumerable.prototype.toJoinedString = function (separator, selector) {
|
---|
2226 | if (separator == null) separator = "";
|
---|
2227 | if (selector == null) selector = Functions.Identity;
|
---|
2228 |
|
---|
2229 | return this.select(selector).toArray().join(separator);
|
---|
2230 | };
|
---|
2231 |
|
---|
2232 |
|
---|
2233 | /* Action Methods */
|
---|
2234 |
|
---|
2235 | // Overload:function(action<element>)
|
---|
2236 | // Overload:function(action<element,index>)
|
---|
2237 | Enumerable.prototype.doAction = function (action) {
|
---|
2238 | var source = this;
|
---|
2239 | action = Utils.createLambda(action);
|
---|
2240 |
|
---|
2241 | return new Enumerable(function () {
|
---|
2242 | var enumerator;
|
---|
2243 | var index = 0;
|
---|
2244 |
|
---|
2245 | return new IEnumerator(
|
---|
2246 | function () { enumerator = source.getEnumerator(); },
|
---|
2247 | function () {
|
---|
2248 | if (enumerator.moveNext()) {
|
---|
2249 | action(enumerator.current(), index++);
|
---|
2250 | return this.yieldReturn(enumerator.current());
|
---|
2251 | }
|
---|
2252 | return false;
|
---|
2253 | },
|
---|
2254 | function () { Utils.dispose(enumerator); });
|
---|
2255 | });
|
---|
2256 | };
|
---|
2257 |
|
---|
2258 | // Overload:function(action<element>)
|
---|
2259 | // Overload:function(action<element,index>)
|
---|
2260 | // Overload:function(func<element,bool>)
|
---|
2261 | // Overload:function(func<element,index,bool>)
|
---|
2262 | Enumerable.prototype.forEach = function (action) {
|
---|
2263 | action = Utils.createLambda(action);
|
---|
2264 |
|
---|
2265 | var index = 0;
|
---|
2266 | var enumerator = this.getEnumerator();
|
---|
2267 | try {
|
---|
2268 | while (enumerator.moveNext()) {
|
---|
2269 | if (action(enumerator.current(), index++) === false) break;
|
---|
2270 | }
|
---|
2271 | } finally {
|
---|
2272 | Utils.dispose(enumerator);
|
---|
2273 | }
|
---|
2274 | };
|
---|
2275 |
|
---|
2276 | // Overload:function()
|
---|
2277 | // Overload:function(separator)
|
---|
2278 | // Overload:function(separator,selector)
|
---|
2279 | Enumerable.prototype.write = function (separator, selector) {
|
---|
2280 | if (separator == null) separator = "";
|
---|
2281 | selector = Utils.createLambda(selector);
|
---|
2282 |
|
---|
2283 | var isFirst = true;
|
---|
2284 | this.forEach(function (item) {
|
---|
2285 | if (isFirst) isFirst = false;
|
---|
2286 | else document.write(separator);
|
---|
2287 | document.write(selector(item));
|
---|
2288 | });
|
---|
2289 | };
|
---|
2290 |
|
---|
2291 | // Overload:function()
|
---|
2292 | // Overload:function(selector)
|
---|
2293 | Enumerable.prototype.writeLine = function (selector) {
|
---|
2294 | selector = Utils.createLambda(selector);
|
---|
2295 |
|
---|
2296 | this.forEach(function (item) {
|
---|
2297 | document.writeln(selector(item) + "<br />");
|
---|
2298 | });
|
---|
2299 | };
|
---|
2300 |
|
---|
2301 | Enumerable.prototype.force = function () {
|
---|
2302 | var enumerator = this.getEnumerator();
|
---|
2303 |
|
---|
2304 | try {
|
---|
2305 | while (enumerator.moveNext()) {
|
---|
2306 | }
|
---|
2307 | }
|
---|
2308 | finally {
|
---|
2309 | Utils.dispose(enumerator);
|
---|
2310 | }
|
---|
2311 | };
|
---|
2312 |
|
---|
2313 | /* Functional Methods */
|
---|
2314 |
|
---|
2315 | Enumerable.prototype.letBind = function (func) {
|
---|
2316 | func = Utils.createLambda(func);
|
---|
2317 | var source = this;
|
---|
2318 |
|
---|
2319 | return new Enumerable(function () {
|
---|
2320 | var enumerator;
|
---|
2321 |
|
---|
2322 | return new IEnumerator(
|
---|
2323 | function () {
|
---|
2324 | enumerator = Enumerable.from(func(source)).getEnumerator();
|
---|
2325 | },
|
---|
2326 | function () {
|
---|
2327 | return (enumerator.moveNext())
|
---|
2328 | ? this.yieldReturn(enumerator.current())
|
---|
2329 | : false;
|
---|
2330 | },
|
---|
2331 | function () { Utils.dispose(enumerator); });
|
---|
2332 | });
|
---|
2333 | };
|
---|
2334 |
|
---|
2335 | Enumerable.prototype.share = function () {
|
---|
2336 | var source = this;
|
---|
2337 | var sharedEnumerator;
|
---|
2338 | var disposed = false;
|
---|
2339 |
|
---|
2340 | return new DisposableEnumerable(function () {
|
---|
2341 | return new IEnumerator(
|
---|
2342 | function () {
|
---|
2343 | if (sharedEnumerator == null) {
|
---|
2344 | sharedEnumerator = source.getEnumerator();
|
---|
2345 | }
|
---|
2346 | },
|
---|
2347 | function () {
|
---|
2348 | if (disposed) throw new Error("enumerator is disposed");
|
---|
2349 |
|
---|
2350 | return (sharedEnumerator.moveNext())
|
---|
2351 | ? this.yieldReturn(sharedEnumerator.current())
|
---|
2352 | : false;
|
---|
2353 | },
|
---|
2354 | Functions.Blank
|
---|
2355 | );
|
---|
2356 | }, function () {
|
---|
2357 | disposed = true;
|
---|
2358 | Utils.dispose(sharedEnumerator);
|
---|
2359 | });
|
---|
2360 | };
|
---|
2361 |
|
---|
2362 | Enumerable.prototype.memoize = function () {
|
---|
2363 | var source = this;
|
---|
2364 | var cache;
|
---|
2365 | var enumerator;
|
---|
2366 | var disposed = false;
|
---|
2367 |
|
---|
2368 | return new DisposableEnumerable(function () {
|
---|
2369 | var index = -1;
|
---|
2370 |
|
---|
2371 | return new IEnumerator(
|
---|
2372 | function () {
|
---|
2373 | if (enumerator == null) {
|
---|
2374 | enumerator = source.getEnumerator();
|
---|
2375 | cache = [];
|
---|
2376 | }
|
---|
2377 | },
|
---|
2378 | function () {
|
---|
2379 | if (disposed) throw new Error("enumerator is disposed");
|
---|
2380 |
|
---|
2381 | index++;
|
---|
2382 | if (cache.length <= index) {
|
---|
2383 | return (enumerator.moveNext())
|
---|
2384 | ? this.yieldReturn(cache[index] = enumerator.current())
|
---|
2385 | : false;
|
---|
2386 | }
|
---|
2387 |
|
---|
2388 | return this.yieldReturn(cache[index]);
|
---|
2389 | },
|
---|
2390 | Functions.Blank
|
---|
2391 | );
|
---|
2392 | }, function () {
|
---|
2393 | disposed = true;
|
---|
2394 | Utils.dispose(enumerator);
|
---|
2395 | cache = null;
|
---|
2396 | });
|
---|
2397 | };
|
---|
2398 |
|
---|
2399 | /* Error Handling Methods */
|
---|
2400 |
|
---|
2401 | Enumerable.prototype.catchError = function (handler) {
|
---|
2402 | handler = Utils.createLambda(handler);
|
---|
2403 | var source = this;
|
---|
2404 |
|
---|
2405 | return new Enumerable(function () {
|
---|
2406 | var enumerator;
|
---|
2407 |
|
---|
2408 | return new IEnumerator(
|
---|
2409 | function () { enumerator = source.getEnumerator(); },
|
---|
2410 | function () {
|
---|
2411 | try {
|
---|
2412 | return (enumerator.moveNext())
|
---|
2413 | ? this.yieldReturn(enumerator.current())
|
---|
2414 | : false;
|
---|
2415 | } catch (e) {
|
---|
2416 | handler(e);
|
---|
2417 | return false;
|
---|
2418 | }
|
---|
2419 | },
|
---|
2420 | function () { Utils.dispose(enumerator); });
|
---|
2421 | });
|
---|
2422 | };
|
---|
2423 |
|
---|
2424 | Enumerable.prototype.finallyAction = function (finallyAction) {
|
---|
2425 | finallyAction = Utils.createLambda(finallyAction);
|
---|
2426 | var source = this;
|
---|
2427 |
|
---|
2428 | return new Enumerable(function () {
|
---|
2429 | var enumerator;
|
---|
2430 |
|
---|
2431 | return new IEnumerator(
|
---|
2432 | function () { enumerator = source.getEnumerator(); },
|
---|
2433 | function () {
|
---|
2434 | return (enumerator.moveNext())
|
---|
2435 | ? this.yieldReturn(enumerator.current())
|
---|
2436 | : false;
|
---|
2437 | },
|
---|
2438 | function () {
|
---|
2439 | try {
|
---|
2440 | Utils.dispose(enumerator);
|
---|
2441 | } finally {
|
---|
2442 | finallyAction();
|
---|
2443 | }
|
---|
2444 | });
|
---|
2445 | });
|
---|
2446 | };
|
---|
2447 |
|
---|
2448 | /* For Debug Methods */
|
---|
2449 |
|
---|
2450 | // Overload:function()
|
---|
2451 | // Overload:function(selector)
|
---|
2452 | Enumerable.prototype.log = function (selector) {
|
---|
2453 | selector = Utils.createLambda(selector);
|
---|
2454 |
|
---|
2455 | return this.doAction(function (item) {
|
---|
2456 | if (typeof console !== Types.Undefined) {
|
---|
2457 | console.log(selector(item));
|
---|
2458 | }
|
---|
2459 | });
|
---|
2460 | };
|
---|
2461 |
|
---|
2462 | // Overload:function()
|
---|
2463 | // Overload:function(message)
|
---|
2464 | // Overload:function(message,selector)
|
---|
2465 | Enumerable.prototype.trace = function (message, selector) {
|
---|
2466 | if (message == null) message = "Trace";
|
---|
2467 | selector = Utils.createLambda(selector);
|
---|
2468 |
|
---|
2469 | return this.doAction(function (item) {
|
---|
2470 | if (typeof console !== Types.Undefined) {
|
---|
2471 | console.log(message, selector(item));
|
---|
2472 | }
|
---|
2473 | });
|
---|
2474 | };
|
---|
2475 |
|
---|
2476 | // private
|
---|
2477 |
|
---|
2478 | var OrderedEnumerable = function (source, keySelector, comparer, descending, parent) {
|
---|
2479 | this.source = source;
|
---|
2480 | this.keySelector = Utils.createLambda(keySelector);
|
---|
2481 | this.comparer = comparer || ss.Comparer.def;
|
---|
2482 | this.descending = descending;
|
---|
2483 | this.parent = parent;
|
---|
2484 | };
|
---|
2485 | OrderedEnumerable.prototype = new Enumerable();
|
---|
2486 |
|
---|
2487 | OrderedEnumerable.prototype.createOrderedEnumerable = function (keySelector, comparer, descending) {
|
---|
2488 | return new OrderedEnumerable(this.source, keySelector, comparer, descending, this);
|
---|
2489 | };
|
---|
2490 | OrderedEnumerable.prototype.thenBy = function (keySelector, comparer) {
|
---|
2491 | return this.createOrderedEnumerable(keySelector, comparer, false);
|
---|
2492 | };
|
---|
2493 | OrderedEnumerable.prototype.thenByDescending = function (keySelector, comparer) {
|
---|
2494 | return this.createOrderedEnumerable(keySelector, comparer, true);
|
---|
2495 | };
|
---|
2496 | OrderedEnumerable.prototype.getEnumerator = function () {
|
---|
2497 | var self = this;
|
---|
2498 | var buffer;
|
---|
2499 | var indexes;
|
---|
2500 | var index = 0;
|
---|
2501 |
|
---|
2502 | return new IEnumerator(
|
---|
2503 | function () {
|
---|
2504 | buffer = [];
|
---|
2505 | indexes = [];
|
---|
2506 | self.source.forEach(function (item, index) {
|
---|
2507 | buffer.push(item);
|
---|
2508 | indexes.push(index);
|
---|
2509 | });
|
---|
2510 | var sortContext = SortContext.create(self, null);
|
---|
2511 | sortContext.GenerateKeys(buffer);
|
---|
2512 |
|
---|
2513 | indexes.sort(function (a, b) { return sortContext.compare(a, b); });
|
---|
2514 | },
|
---|
2515 | function () {
|
---|
2516 | return (index < indexes.length)
|
---|
2517 | ? this.yieldReturn(buffer[indexes[index++]])
|
---|
2518 | : false;
|
---|
2519 | },
|
---|
2520 | Functions.Blank
|
---|
2521 | );
|
---|
2522 | };
|
---|
2523 |
|
---|
2524 | var SortContext = function (keySelector, comparer, descending, child) {
|
---|
2525 | this.keySelector = keySelector;
|
---|
2526 | this.comparer = comparer;
|
---|
2527 | this.descending = descending;
|
---|
2528 | this.child = child;
|
---|
2529 | this.keys = null;
|
---|
2530 | };
|
---|
2531 | SortContext.create = function (orderedEnumerable, currentContext) {
|
---|
2532 | var context = new SortContext(orderedEnumerable.keySelector, orderedEnumerable.comparer, orderedEnumerable.descending, currentContext);
|
---|
2533 | if (orderedEnumerable.parent != null) return SortContext.create(orderedEnumerable.parent, context);
|
---|
2534 | return context;
|
---|
2535 | };
|
---|
2536 | SortContext.prototype.GenerateKeys = function (source) {
|
---|
2537 | var len = source.length;
|
---|
2538 | var keySelector = this.keySelector;
|
---|
2539 | var keys = new Array(len);
|
---|
2540 | for (var i = 0; i < len; i++) keys[i] = keySelector(source[i]);
|
---|
2541 | this.keys = keys;
|
---|
2542 |
|
---|
2543 | if (this.child != null) this.child.GenerateKeys(source);
|
---|
2544 | };
|
---|
2545 | SortContext.prototype.compare = function (index1, index2) {
|
---|
2546 | var comparison = this.comparer.compare(this.keys[index1], this.keys[index2]);
|
---|
2547 |
|
---|
2548 | if (comparison == 0) {
|
---|
2549 | if (this.child != null) return this.child.compare(index1, index2);
|
---|
2550 | return Utils.compare(index1, index2);
|
---|
2551 | }
|
---|
2552 |
|
---|
2553 | return (this.descending) ? -comparison : comparison;
|
---|
2554 | };
|
---|
2555 |
|
---|
2556 | var DisposableEnumerable = function (getEnumerator, dispose) {
|
---|
2557 | this.dispose = dispose;
|
---|
2558 | Enumerable.call(this, getEnumerator);
|
---|
2559 | };
|
---|
2560 | DisposableEnumerable.prototype = new Enumerable();
|
---|
2561 |
|
---|
2562 | // optimize array or arraylike object
|
---|
2563 |
|
---|
2564 | var ArrayEnumerable = function (source) {
|
---|
2565 | this.getSource = function () { return source; };
|
---|
2566 | };
|
---|
2567 | ArrayEnumerable.prototype = new Enumerable();
|
---|
2568 |
|
---|
2569 | ArrayEnumerable.prototype.any = function (predicate) {
|
---|
2570 | return (predicate == null)
|
---|
2571 | ? (this.getSource().length > 0)
|
---|
2572 | : Enumerable.prototype.any.apply(this, arguments);
|
---|
2573 | };
|
---|
2574 |
|
---|
2575 | ArrayEnumerable.prototype.count = function (predicate) {
|
---|
2576 | return (predicate == null)
|
---|
2577 | ? this.getSource().length
|
---|
2578 | : Enumerable.prototype.count.apply(this, arguments);
|
---|
2579 | };
|
---|
2580 |
|
---|
2581 | ArrayEnumerable.prototype.elementAt = function (index) {
|
---|
2582 | var source = this.getSource();
|
---|
2583 | return (0 <= index && index < source.length)
|
---|
2584 | ? source[index]
|
---|
2585 | : Enumerable.prototype.elementAt.apply(this, arguments);
|
---|
2586 | };
|
---|
2587 |
|
---|
2588 | ArrayEnumerable.prototype.elementAtOrDefault = function (index, defaultValue) {
|
---|
2589 | if (defaultValue === undefined) defaultValue = null;
|
---|
2590 | var source = this.getSource();
|
---|
2591 | return (0 <= index && index < source.length)
|
---|
2592 | ? source[index]
|
---|
2593 | : defaultValue;
|
---|
2594 | };
|
---|
2595 |
|
---|
2596 | ArrayEnumerable.prototype.first = function (predicate) {
|
---|
2597 | var source = this.getSource();
|
---|
2598 | return (predicate == null && source.length > 0)
|
---|
2599 | ? source[0]
|
---|
2600 | : Enumerable.prototype.first.apply(this, arguments);
|
---|
2601 | };
|
---|
2602 |
|
---|
2603 | ArrayEnumerable.prototype.firstOrDefault = function (predicate, defaultValue) {
|
---|
2604 | if (defaultValue === undefined) defaultValue = null;
|
---|
2605 | if (predicate != null) {
|
---|
2606 | return Enumerable.prototype.firstOrDefault.apply(this, arguments);
|
---|
2607 | }
|
---|
2608 |
|
---|
2609 | var source = this.getSource();
|
---|
2610 | return source.length > 0 ? source[0] : defaultValue;
|
---|
2611 | };
|
---|
2612 |
|
---|
2613 | ArrayEnumerable.prototype.last = function (predicate) {
|
---|
2614 | var source = this.getSource();
|
---|
2615 | return (predicate == null && source.length > 0)
|
---|
2616 | ? source[source.length - 1]
|
---|
2617 | : Enumerable.prototype.last.apply(this, arguments);
|
---|
2618 | };
|
---|
2619 |
|
---|
2620 | ArrayEnumerable.prototype.lastOrDefault = function (predicate, defaultValue) {
|
---|
2621 | if (defaultValue === undefined) defaultValue = null;
|
---|
2622 | if (predicate != null) {
|
---|
2623 | return Enumerable.prototype.lastOrDefault.apply(this, arguments);
|
---|
2624 | }
|
---|
2625 |
|
---|
2626 | var source = this.getSource();
|
---|
2627 | return source.length > 0 ? source[source.length - 1] : defaultValue;
|
---|
2628 | };
|
---|
2629 |
|
---|
2630 | ArrayEnumerable.prototype.skip = function (count) {
|
---|
2631 | var source = this.getSource();
|
---|
2632 |
|
---|
2633 | return new Enumerable(function () {
|
---|
2634 | var index;
|
---|
2635 |
|
---|
2636 | return new IEnumerator(
|
---|
2637 | function () { index = (count < 0) ? 0 : count; },
|
---|
2638 | function () {
|
---|
2639 | return (index < source.length)
|
---|
2640 | ? this.yieldReturn(source[index++])
|
---|
2641 | : false;
|
---|
2642 | },
|
---|
2643 | Functions.Blank);
|
---|
2644 | });
|
---|
2645 | };
|
---|
2646 |
|
---|
2647 | ArrayEnumerable.prototype.takeExceptLast = function (count) {
|
---|
2648 | if (count == null) count = 1;
|
---|
2649 | return this.take(this.getSource().length - count);
|
---|
2650 | };
|
---|
2651 |
|
---|
2652 | ArrayEnumerable.prototype.takeFromLast = function (count) {
|
---|
2653 | return this.skip(this.getSource().length - count);
|
---|
2654 | };
|
---|
2655 |
|
---|
2656 | ArrayEnumerable.prototype.reverse = function () {
|
---|
2657 | var source = this.getSource();
|
---|
2658 |
|
---|
2659 | return new Enumerable(function () {
|
---|
2660 | var index;
|
---|
2661 |
|
---|
2662 | return new IEnumerator(
|
---|
2663 | function () {
|
---|
2664 | index = source.length;
|
---|
2665 | },
|
---|
2666 | function () {
|
---|
2667 | return (index > 0)
|
---|
2668 | ? this.yieldReturn(source[--index])
|
---|
2669 | : false;
|
---|
2670 | },
|
---|
2671 | Functions.Blank);
|
---|
2672 | });
|
---|
2673 | };
|
---|
2674 |
|
---|
2675 | ArrayEnumerable.prototype.sequenceEqual = function (second, comparer) {
|
---|
2676 | if ((second instanceof ArrayEnumerable || second instanceof Array)
|
---|
2677 | && comparer == null
|
---|
2678 | && Enumerable.from(second).count() != this.count()) {
|
---|
2679 | return false;
|
---|
2680 | }
|
---|
2681 |
|
---|
2682 | return Enumerable.prototype.sequenceEqual.apply(this, arguments);
|
---|
2683 | };
|
---|
2684 |
|
---|
2685 | ArrayEnumerable.prototype.toJoinedString = function (separator, selector) {
|
---|
2686 | var source = this.getSource();
|
---|
2687 | if (selector != null || !(source instanceof Array)) {
|
---|
2688 | return Enumerable.prototype.toJoinedString.apply(this, arguments);
|
---|
2689 | }
|
---|
2690 |
|
---|
2691 | if (separator == null) separator = "";
|
---|
2692 | return source.join(separator);
|
---|
2693 | };
|
---|
2694 |
|
---|
2695 | ArrayEnumerable.prototype.getEnumerator = function () {
|
---|
2696 | return new ss.ArrayEnumerator(this.getSource());
|
---|
2697 | };
|
---|
2698 |
|
---|
2699 | // optimization for multiple where and multiple select and whereselect
|
---|
2700 |
|
---|
2701 | var WhereEnumerable = function (source, predicate) {
|
---|
2702 | this.prevSource = source;
|
---|
2703 | this.prevPredicate = predicate; // predicate.length always <= 1
|
---|
2704 | };
|
---|
2705 | WhereEnumerable.prototype = new Enumerable();
|
---|
2706 |
|
---|
2707 | WhereEnumerable.prototype.where = function (predicate) {
|
---|
2708 | predicate = Utils.createLambda(predicate);
|
---|
2709 |
|
---|
2710 | if (predicate.length <= 1) {
|
---|
2711 | var prevPredicate = this.prevPredicate;
|
---|
2712 | var composedPredicate = function (x) { return prevPredicate(x) && predicate(x); };
|
---|
2713 | return new WhereEnumerable(this.prevSource, composedPredicate);
|
---|
2714 | }
|
---|
2715 | else {
|
---|
2716 | // if predicate use index, can't compose
|
---|
2717 | return Enumerable.prototype.where.call(this, predicate);
|
---|
2718 | }
|
---|
2719 | };
|
---|
2720 |
|
---|
2721 | WhereEnumerable.prototype.select = function (selector) {
|
---|
2722 | selector = Utils.createLambda(selector);
|
---|
2723 |
|
---|
2724 | return (selector.length <= 1)
|
---|
2725 | ? new WhereSelectEnumerable(this.prevSource, this.prevPredicate, selector)
|
---|
2726 | : Enumerable.prototype.select.call(this, selector);
|
---|
2727 | };
|
---|
2728 |
|
---|
2729 | WhereEnumerable.prototype.getEnumerator = function () {
|
---|
2730 | var predicate = this.prevPredicate;
|
---|
2731 | var source = this.prevSource;
|
---|
2732 | var enumerator;
|
---|
2733 |
|
---|
2734 | return new IEnumerator(
|
---|
2735 | function () { enumerator = source.getEnumerator(); },
|
---|
2736 | function () {
|
---|
2737 | while (enumerator.moveNext()) {
|
---|
2738 | if (predicate(enumerator.current())) {
|
---|
2739 | return this.yieldReturn(enumerator.current());
|
---|
2740 | }
|
---|
2741 | }
|
---|
2742 | return false;
|
---|
2743 | },
|
---|
2744 | function () { Utils.dispose(enumerator); });
|
---|
2745 | };
|
---|
2746 |
|
---|
2747 | var WhereSelectEnumerable = function (source, predicate, selector) {
|
---|
2748 | this.prevSource = source;
|
---|
2749 | this.prevPredicate = predicate; // predicate.length always <= 1 or null
|
---|
2750 | this.prevSelector = selector; // selector.length always <= 1
|
---|
2751 | };
|
---|
2752 | WhereSelectEnumerable.prototype = new Enumerable();
|
---|
2753 |
|
---|
2754 | WhereSelectEnumerable.prototype.where = function (predicate) {
|
---|
2755 | predicate = Utils.createLambda(predicate);
|
---|
2756 |
|
---|
2757 | return (predicate.length <= 1)
|
---|
2758 | ? new WhereEnumerable(this, predicate)
|
---|
2759 | : Enumerable.prototype.where.call(this, predicate);
|
---|
2760 | };
|
---|
2761 |
|
---|
2762 | WhereSelectEnumerable.prototype.select = function (selector) {
|
---|
2763 | selector = Utils.createLambda(selector);
|
---|
2764 |
|
---|
2765 | if (selector.length <= 1) {
|
---|
2766 | var prevSelector = this.prevSelector;
|
---|
2767 | var composedSelector = function (x) { return selector(prevSelector(x)); };
|
---|
2768 | return new WhereSelectEnumerable(this.prevSource, this.prevPredicate, composedSelector);
|
---|
2769 | }
|
---|
2770 | else {
|
---|
2771 | // if selector use index, can't compose
|
---|
2772 | return Enumerable.prototype.select.call(this, selector);
|
---|
2773 | }
|
---|
2774 | };
|
---|
2775 |
|
---|
2776 | WhereSelectEnumerable.prototype.getEnumerator = function () {
|
---|
2777 | var predicate = this.prevPredicate;
|
---|
2778 | var selector = this.prevSelector;
|
---|
2779 | var source = this.prevSource;
|
---|
2780 | var enumerator;
|
---|
2781 |
|
---|
2782 | return new IEnumerator(
|
---|
2783 | function () { enumerator = source.getEnumerator(); },
|
---|
2784 | function () {
|
---|
2785 | while (enumerator.moveNext()) {
|
---|
2786 | if (predicate == null || predicate(enumerator.current())) {
|
---|
2787 | return this.yieldReturn(selector(enumerator.current()));
|
---|
2788 | }
|
---|
2789 | }
|
---|
2790 | return false;
|
---|
2791 | },
|
---|
2792 | function () { Utils.dispose(enumerator); });
|
---|
2793 | };
|
---|
2794 |
|
---|
2795 | // Collections
|
---|
2796 |
|
---|
2797 | // dictionary = Dictionary<TKey, TValue[]>
|
---|
2798 | var Lookup = function (dictionary, order) {
|
---|
2799 | this.count = function () {
|
---|
2800 | return dictionary.get_count();
|
---|
2801 | };
|
---|
2802 | this.get = function (key) {
|
---|
2803 | var value = { $: null };
|
---|
2804 | var success = dictionary.tryGetValue(key, value);
|
---|
2805 | return Enumerable.from(success ? value.$ : []);
|
---|
2806 | };
|
---|
2807 | this.contains = function (key) {
|
---|
2808 | return dictionary.containsKey(key);
|
---|
2809 | };
|
---|
2810 | this.toEnumerable = function () {
|
---|
2811 | return Enumerable.from(order).select(function (key) {
|
---|
2812 | return new Grouping(key, dictionary.get_item(key));
|
---|
2813 | });
|
---|
2814 | };
|
---|
2815 | this.getEnumerator = function () {
|
---|
2816 | return this.toEnumerable().getEnumerator();
|
---|
2817 | };
|
---|
2818 | };
|
---|
2819 | ss.initClass(Lookup, $asm, {}, null, [ss.IEnumerable]);
|
---|
2820 |
|
---|
2821 | var Grouping = function (groupKey, elements) {
|
---|
2822 | this.key = function () {
|
---|
2823 | return groupKey;
|
---|
2824 | };
|
---|
2825 | ArrayEnumerable.call(this, elements);
|
---|
2826 | };
|
---|
2827 | Grouping.prototype = new ArrayEnumerable();
|
---|
2828 |
|
---|
2829 | // module export
|
---|
2830 | if (typeof define === Types.Function && define.amd) { // AMD
|
---|
2831 | define("linqjs", [], function () { return Enumerable; });
|
---|
2832 | root.Enumerable = Enumerable;
|
---|
2833 | }
|
---|
2834 | else if (typeof module !== Types.Undefined && module.exports) { // Node
|
---|
2835 | module.exports = Enumerable;
|
---|
2836 | global.Enumerable = Enumerable;
|
---|
2837 | }
|
---|
2838 | else {
|
---|
2839 | root.Enumerable = Enumerable;
|
---|
2840 | }
|
---|
2841 | })(this);
|
---|