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- "use strict";
- var cr = Object.create;
- if (cr) {
- var callerCache = cr(null);
- var getterCache = cr(null);
- callerCache[" size"] = getterCache[" size"] = 0;
- }
-
- module.exports = function(Promise) {
- var util = require("./util");
- var canEvaluate = util.canEvaluate;
- var isIdentifier = util.isIdentifier;
-
- var getMethodCaller;
- var getGetter;
- if (!false) {
- var makeMethodCaller = function (methodName) {
- return new Function("ensureMethod", " \n\
- return function(obj) { \n\
- 'use strict' \n\
- var len = this.length; \n\
- ensureMethod(obj, 'methodName'); \n\
- switch(len) { \n\
- case 1: return obj.methodName(this[0]); \n\
- case 2: return obj.methodName(this[0], this[1]); \n\
- case 3: return obj.methodName(this[0], this[1], this[2]); \n\
- case 0: return obj.methodName(); \n\
- default: \n\
- return obj.methodName.apply(obj, this); \n\
- } \n\
- }; \n\
- ".replace(/methodName/g, methodName))(ensureMethod);
- };
-
- var makeGetter = function (propertyName) {
- return new Function("obj", " \n\
- 'use strict'; \n\
- return obj.propertyName; \n\
- ".replace("propertyName", propertyName));
- };
-
- var getCompiled = function(name, compiler, cache) {
- var ret = cache[name];
- if (typeof ret !== "function") {
- if (!isIdentifier(name)) {
- return null;
- }
- ret = compiler(name);
- cache[name] = ret;
- cache[" size"]++;
- if (cache[" size"] > 512) {
- var keys = Object.keys(cache);
- for (var i = 0; i < 256; ++i) delete cache[keys[i]];
- cache[" size"] = keys.length - 256;
- }
- }
- return ret;
- };
-
- getMethodCaller = function(name) {
- return getCompiled(name, makeMethodCaller, callerCache);
- };
-
- getGetter = function(name) {
- return getCompiled(name, makeGetter, getterCache);
- };
- }
-
- function ensureMethod(obj, methodName) {
- var fn;
- if (obj != null) fn = obj[methodName];
- if (typeof fn !== "function") {
- var message = "Object " + util.classString(obj) + " has no method '" +
- util.toString(methodName) + "'";
- throw new Promise.TypeError(message);
- }
- return fn;
- }
-
- function caller(obj) {
- var methodName = this.pop();
- var fn = ensureMethod(obj, methodName);
- return fn.apply(obj, this);
- }
- Promise.prototype.call = function (methodName) {
- 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];};
- if (!false) {
- if (canEvaluate) {
- var maybeCaller = getMethodCaller(methodName);
- if (maybeCaller !== null) {
- return this._then(
- maybeCaller, undefined, undefined, args, undefined);
- }
- }
- }
- args.push(methodName);
- return this._then(caller, undefined, undefined, args, undefined);
- };
-
- function namedGetter(obj) {
- return obj[this];
- }
- function indexedGetter(obj) {
- var index = +this;
- if (index < 0) index = Math.max(0, index + obj.length);
- return obj[index];
- }
- Promise.prototype.get = function (propertyName) {
- var isIndex = (typeof propertyName === "number");
- var getter;
- if (!isIndex) {
- if (canEvaluate) {
- var maybeGetter = getGetter(propertyName);
- getter = maybeGetter !== null ? maybeGetter : namedGetter;
- } else {
- getter = namedGetter;
- }
- } else {
- getter = indexedGetter;
- }
- return this._then(getter, undefined, undefined, propertyName, undefined);
- };
- };
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