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Optimize LoopStatus variable for v8 using class

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This commit is contained in:
Patrick Steele-Idem 2016-08-11 17:30:54 -06:00
parent 73b9268e0c
commit fe0d1a749c
1 changed files with 15 additions and 7 deletions
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22
runtime/helpers.js
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@ -107,6 +107,13 @@ function resolveRenderer(handler) {
return createDeferredRenderer(handler);
}
function LoopStatus(getLength, isLast, isFirst, getIndex) {
this.getLength = getLength;
this.isLast = isLast;
this.isFirst = isFirst;
this.getIndex = getIndex;
}
module.exports = {
/**
* Internal helper method to prevent null/undefined from being written out
@ -129,25 +136,26 @@ module.exports = {
}
var i = 0;
var len = array.length;
var loopStatus = {
getLength: function () {
var loopStatus = new LoopStatus(
function getLength() {
return len;
},
isLast: function () {
function isLast() {
return i === len - 1;
},
isFirst: function () {
function isFirst() {
return i === 0;
},
getIndex: function () {
function getIndex() {
return i;
}
};
});
for (; i < len; i++) {
var o = array[i];
callback(o, loopStatus);
}
},
/**
* Internal helper method to handle loops without a status variable
* @private