2 var cr = Object.create;
4 var callerCache = cr(null);
5 var getterCache = cr(null);
6 callerCache[" size"] = getterCache[" size"] = 0;
9 module.exports = function(Promise) {
10 var util = require("./util");
11 var canEvaluate = util.canEvaluate;
12 var isIdentifier = util.isIdentifier;
17 var makeMethodCaller = function (methodName) {
18 return new Function("ensureMethod", " \n\
19 return function(obj) { \n\
21 var len = this.length; \n\
22 ensureMethod(obj, 'methodName'); \n\
24 case 1: return obj.methodName(this[0]); \n\
25 case 2: return obj.methodName(this[0], this[1]); \n\
26 case 3: return obj.methodName(this[0], this[1], this[2]); \n\
27 case 0: return obj.methodName(); \n\
29 return obj.methodName.apply(obj, this); \n\
32 ".replace(/methodName/g, methodName))(ensureMethod);
35 var makeGetter = function (propertyName) {
36 return new Function("obj", " \n\
38 return obj.propertyName; \n\
39 ".replace("propertyName", propertyName));
42 var getCompiled = function(name, compiler, cache) {
43 var ret = cache[name];
44 if (typeof ret !== "function") {
45 if (!isIdentifier(name)) {
51 if (cache[" size"] > 512) {
52 var keys = Object.keys(cache);
53 for (var i = 0; i < 256; ++i) delete cache[keys[i]];
54 cache[" size"] = keys.length - 256;
60 getMethodCaller = function(name) {
61 return getCompiled(name, makeMethodCaller, callerCache);
64 getGetter = function(name) {
65 return getCompiled(name, makeGetter, getterCache);
69 function ensureMethod(obj, methodName) {
71 if (obj != null) fn = obj[methodName];
72 if (typeof fn !== "function") {
73 var message = "Object " + util.classString(obj) + " has no method '" +
74 util.toString(methodName) + "'";
75 throw new Promise.TypeError(message);
80 function caller(obj) {
81 var methodName = this.pop();
82 var fn = ensureMethod(obj, methodName);
83 return fn.apply(obj, this);
85 Promise.prototype.call = function (methodName) {
86 var $_len = arguments.length;var args = new Array($_len - 1); for(var $_i = 1; $_i < $_len; ++$_i) {args[$_i - 1] = arguments[$_i];};
89 var maybeCaller = getMethodCaller(methodName);
90 if (maybeCaller !== null) {
92 maybeCaller, undefined, undefined, args, undefined);
96 args.push(methodName);
97 return this._then(caller, undefined, undefined, args, undefined);
100 function namedGetter(obj) {
103 function indexedGetter(obj) {
105 if (index < 0) index = Math.max(0, index + obj.length);
108 Promise.prototype.get = function (propertyName) {
109 var isIndex = (typeof propertyName === "number");
113 var maybeGetter = getGetter(propertyName);
114 getter = maybeGetter !== null ? maybeGetter : namedGetter;
116 getter = namedGetter;
119 getter = indexedGetter;
121 return this._then(getter, undefined, undefined, propertyName, undefined);