You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.4 KiB
JavaScript
45 lines
1.4 KiB
JavaScript
dojo.provide("dojox.lang.aspect.memoizer");
|
|
|
|
(function(){
|
|
var aop = dojox.lang.aspect;
|
|
|
|
var memoize1 = {
|
|
around: function(key){
|
|
var ctx = aop.getContext(), self = ctx.joinPoint, that = ctx.instance, t, u, ret;
|
|
if((t = that.__memoizerCache) && (t = t[self.targetName]) && (key in t)){
|
|
return t[key];
|
|
}
|
|
var ret = aop.proceed.apply(null, arguments);
|
|
if(!(t = that.__memoizerCache)){ t = that.__memoizerCache = {}; }
|
|
if(!(u = t[self.targetName])){ u = t[self.targetName] = {}; }
|
|
return u[key] = ret;
|
|
}
|
|
};
|
|
|
|
var memoizeN = function(/*Function*/keyMaker){
|
|
return {
|
|
around: function(/*arguments*/){
|
|
var ctx = aop.getContext(), self = ctx.joinPoint, that = ctx.instance, t, u, ret,
|
|
key = keyMaker.apply(that, arguments);
|
|
if((t = that.__memoizerCache) && (t = t[self.targetName]) && (key in t)){
|
|
return t[key];
|
|
}
|
|
var ret = aop.proceed.apply(null, arguments);
|
|
if(!(t = that.__memoizerCache)){ t = that.__memoizerCache = {}; }
|
|
if(!(u = t[self.targetName])){ u = t[self.targetName] = {}; }
|
|
return u[key] = ret;
|
|
}
|
|
};
|
|
};
|
|
|
|
aop.memoizer = function(/*Function?*/ keyMaker){
|
|
// summary:
|
|
// Returns an object, which can be used to count calls to methods.
|
|
//
|
|
// keyMaker:
|
|
// the function, which takes method's arguments and returns a key,
|
|
// which can be used to index the result.
|
|
|
|
return arguments.length == 0 ? memoize1 : memoizeN(keyMaker); // Object
|
|
};
|
|
})(); |