distributor-js
Version:
1 lines • 1.16 kB
JavaScript
;var distributor=(function(){var isObject=function(o){return Object.prototype.toString.call(o)==="[object Object]"};var cloneObject=function(_old){var _new={};for(var i in _old){_old.hasOwnProperty(i)&&(_new[i]=_old[i])}return _new};var distributor=function(data,defaultResult){defaultResult=defaultResult||undefined;if(!data||!isObject(data)){throw new TypeError('param "data", expected a object')}var rootData=cloneObject(data);var types=Object.keys(rootData);var currentType=types[0];for(var i=0;i<types.length;i++){if(!isObject(rootData[types[i]])){throw new TypeError('param "rootData['+types[i]+']", expected a object')}}var rootObj={};var tempObj={};types.forEach(function(typeName){Object.keys(rootData[typeName]).forEach(function(val){if(!tempObj[val]){tempObj[val]={enumerable:true,get:function(){return rootData[currentType][val]||defaultResult},set:function(val){return null}}}})});Object.defineProperties(rootObj,tempObj);return{data:rootObj,setType:function(type){if(types.indexOf(type)===-1){throw new Error("setType error: "+type+"type no exist")}else{currentType=type}},getType:function(){return currentType}}};return distributor})();