mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-24 17:35:16 +00:00
124 lines
4.3 KiB
JavaScript
124 lines
4.3 KiB
JavaScript
"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);
|
|
};
|
|
};
|