elm/runtime/Utils.js
2013-03-21 02:35:36 -07:00

33 lines
721 B
JavaScript

(function() {
'use strict';
ElmRuntime.counter = 0;
ElmRuntime.guid = function() { return ElmRuntime.counter++; }
ElmRuntime.use = function(M) {
if (typeof M === 'function') M = M();
return M;
};
function isAlive(input) {
if (!('defaultNumberOfKids' in input)) return true;
var len = input.kids.length;
if (len == 0) return false;
if (len > input.defaultNumberOfKids) return true;
var alive = false;
for (var i = len; i--; ) {
alive = alive || isAlive(input.kids[i]);
}
return alive;
}
ElmRuntime.filterDeadInputs = function(inputs) {
var temp = [];
for (var i = inputs.length; i--; ) {
if (isAlive(inputs[i])) temp.push(inputs[i]);
}
return temp;
};
}());