[101] | 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)
|
---|
| 487 | // Overload:function(element, count)
|
---|
| 488 | Enumerable.repeat = function (element, count) {
|
---|
| 489 | if (count != null) return Enumerable.repeat(element).take(count);
|
---|
| 490 |
|
---|
| 491 | return new Enumerable(function () {
|
---|
| 492 | return new IEnumerator(
|
---|
| 493 | Functions.Blank,
|
---|
| 494 | function () { return this.yieldReturn(element); },
|
---|
| 495 | Functions.Blank);
|
---|
| 496 | });
|
---|
| 497 | };
|
---|
| 498 |
|
---|
| 499 | Enumerable.repeatWithFinalize = function (initializer, finalizer) {
|
---|
| 500 | initializer = Utils.createLambda(initializer);
|
---|
| 501 | finalizer = Utils.createLambda(finalizer);
|
---|
| 502 |
|
---|
| 503 | return new Enumerable(function () {
|
---|
| 504 | var element;
|
---|
| 505 | return new IEnumerator(
|
---|
| 506 | function () { element = initializer(); },
|
---|
| 507 | function () { return this.yieldReturn(element); },
|
---|
| 508 | function () {
|
---|
| 509 | if (element != null) {
|
---|
| 510 | finalizer(element);
|
---|
| 511 | element = null;
|
---|
| 512 | }
|
---|
| 513 | });
|
---|
| 514 | });
|
---|
| 515 | };
|
---|
| 516 |
|
---|
| 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);
|
---|