| 1 | "use strict";
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| 2 | var cr = Object.create;
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| 3 | if (cr) {
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| 4 | var callerCache = cr(null);
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| 5 | var getterCache = cr(null);
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| 6 | callerCache[" size"] = getterCache[" size"] = 0;
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| 7 | }
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| 8 |
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| 9 | module.exports = function(Promise) {
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| 10 | var util = require("./util");
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| 11 | var canEvaluate = util.canEvaluate;
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| 12 | var isIdentifier = util.isIdentifier;
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| 13 |
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| 14 | var getMethodCaller;
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| 15 | var getGetter;
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| 16 | if (!false) {
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| 17 | var makeMethodCaller = function (methodName) {
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| 18 | return new Function("ensureMethod", " \n\
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| 19 | return function(obj) { \n\
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| 20 | 'use strict' \n\
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| 21 | var len = this.length; \n\
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| 22 | ensureMethod(obj, 'methodName'); \n\
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| 23 | switch(len) { \n\
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| 24 | case 1: return obj.methodName(this[0]); \n\
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| 25 | case 2: return obj.methodName(this[0], this[1]); \n\
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| 26 | case 3: return obj.methodName(this[0], this[1], this[2]); \n\
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| 27 | case 0: return obj.methodName(); \n\
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| 28 | default: \n\
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| 29 | return obj.methodName.apply(obj, this); \n\
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| 30 | } \n\
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| 31 | }; \n\
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| 32 | ".replace(/methodName/g, methodName))(ensureMethod);
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| 33 | };
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| 34 |
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| 35 | var makeGetter = function (propertyName) {
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| 36 | return new Function("obj", " \n\
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| 37 | 'use strict'; \n\
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| 38 | return obj.propertyName; \n\
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| 39 | ".replace("propertyName", propertyName));
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| 40 | };
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| 41 |
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| 42 | var getCompiled = function(name, compiler, cache) {
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| 43 | var ret = cache[name];
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| 44 | if (typeof ret !== "function") {
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| 45 | if (!isIdentifier(name)) {
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| 46 | return null;
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| 47 | }
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| 48 | ret = compiler(name);
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| 49 | cache[name] = ret;
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| 50 | cache[" size"]++;
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| 51 | if (cache[" size"] > 512) {
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| 52 | var keys = Object.keys(cache);
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| 53 | for (var i = 0; i < 256; ++i) delete cache[keys[i]];
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| 54 | cache[" size"] = keys.length - 256;
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| 55 | }
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| 56 | }
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| 57 | return ret;
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| 58 | };
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| 59 |
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| 60 | getMethodCaller = function(name) {
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| 61 | return getCompiled(name, makeMethodCaller, callerCache);
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| 62 | };
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| 63 |
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| 64 | getGetter = function(name) {
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| 65 | return getCompiled(name, makeGetter, getterCache);
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| 66 | };
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| 67 | }
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| 68 |
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| 69 | function ensureMethod(obj, methodName) {
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| 70 | var fn;
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| 71 | if (obj != null) fn = obj[methodName];
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| 72 | if (typeof fn !== "function") {
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| 73 | var message = "Object " + util.classString(obj) + " has no method '" +
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| 74 | util.toString(methodName) + "'";
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| 75 | throw new Promise.TypeError(message);
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| 76 | }
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| 77 | return fn;
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| 78 | }
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| 79 |
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| 80 | function caller(obj) {
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| 81 | var methodName = this.pop();
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| 82 | var fn = ensureMethod(obj, methodName);
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| 83 | return fn.apply(obj, this);
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| 84 | }
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| 85 | Promise.prototype.call = function (methodName) {
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| 86 | var $_len = arguments.length;var args = new Array(Math.max($_len - 1, 0)); for(var $_i = 1; $_i < $_len; ++$_i) {args[$_i - 1] = arguments[$_i];};
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| 87 | if (!false) {
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| 88 | if (canEvaluate) {
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| 89 | var maybeCaller = getMethodCaller(methodName);
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| 90 | if (maybeCaller !== null) {
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| 91 | return this._then(
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| 92 | maybeCaller, undefined, undefined, args, undefined);
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| 93 | }
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| 94 | }
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| 95 | }
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| 96 | args.push(methodName);
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| 97 | return this._then(caller, undefined, undefined, args, undefined);
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| 98 | };
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| 99 |
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| 100 | function namedGetter(obj) {
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| 101 | return obj[this];
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| 102 | }
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| 103 | function indexedGetter(obj) {
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| 104 | var index = +this;
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| 105 | if (index < 0) index = Math.max(0, index + obj.length);
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| 106 | return obj[index];
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| 107 | }
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| 108 | Promise.prototype.get = function (propertyName) {
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| 109 | var isIndex = (typeof propertyName === "number");
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| 110 | var getter;
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| 111 | if (!isIndex) {
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| 112 | if (canEvaluate) {
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| 113 | var maybeGetter = getGetter(propertyName);
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| 114 | getter = maybeGetter !== null ? maybeGetter : namedGetter;
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| 115 | } else {
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| 116 | getter = namedGetter;
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| 117 | }
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| 118 | } else {
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| 119 | getter = indexedGetter;
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| 120 | }
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| 121 | return this._then(getter, undefined, undefined, propertyName, undefined);
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| 122 | };
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| 123 | };
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