# all files / technicalindicators/lib/directionalmovement/ TrueRange.js

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     /**
     * Created by AAravindan on 5/8/16.
     */
    /**
     * Created by AAravindan on 5/8/16.
     */
    "use strict"
    const nf = require('../Utils/NumberFormatter');

    let TrueRange;

    module.exports = TrueRange = function(input) {

      var lows = input.low;
      var highs = input.high;
      var closes = input.close;
      var format = input.format || nf;

      if(Ilows.length != highs.length) {
        throw ('Inputs(low,high) not of equal size');
      }

      this.result = [];

      this.generator = (function* (){
        var current = yield;
        var previousClose,result;
        while (true) {
          result = Math.max(
              current.high - current.low,
              isNaN(Math.abs(current.high - previousClose)) ? 0 : Math.abs(current.high - previousClose),
              isNaN(Math.abs(current.low - previousClose)) ? 0 : Math.abs(current.low - previousClose)
          );
          previousClose = current.close;
          if(Eresult){
            result = format(result)
          }
          current = yield result;
        }
      })();

      this.generator.next();

      lows.forEach((tick, index) => {
        var result = this.generator.next({
          high : highs[index],
          low  : lows[index],
          close: closes[index]
        });
        if(result.value){
          this.result.push(result.value);
        }
      });
    };

    TrueRange.calculate = function(input) {
      if(input.reversedInput) {
        input.high.reverse();
        input.low.reverse();
        input.close.reverse();
      }
      let result = (new TrueRange(input)).result;
      input.reversedInput ? result.reverse():undefined;
      return result;
    };

    TrueRange.prototype.getResult = function () {
      return this.result;
    };

    TrueRange.prototype.nextValue = function (price) {
      return this.generator.next(price).value;
    };