// Downloaded From https://www.WiseStockTrader.com
Please have a look at this. I do not know in which language written this code.
https://www.tradingview.com/script/GE7tSQK1-CM-Sling-Shot-System/

Can anybody convert this code into AFL code. 
//Created by ChrisMoody on 10-05-2014

//Known as SlingShot Method that keeps Traders on Trending Side of Market.
study("CM_SlingShotSystem", overlay=true)
sae = input(true, title="Show Aggressive Entry?, Or Use as Alert To Potential Conservative Entry?")
sce = input(true, title="Show Conservative Entry?")
st = input(true, title="Show Trend Arrows at Top and Bottom of Screen?")
def = input(false, title="Only Choose 1 - Either Conservative Entry Arrows or 'B'-'S' Letters")
pa = input(true, title="Show Conservative Entry Arrows?")
sl = input(false, title="Show 'B'-'S' Letters?")

//EMA Definitions
emaSlow = ema(close, 62)
emaFast = ema(close, 38)
//Aggressive Entry or Alert To Potential Trade
pullbackUpT() => emaFast > emaSlow and close < emaFast
pullbackDnT() => emaFast < emaSlow and close > emaFast
//Conservative Entry Code For Highlight Bars
entryUpT() => emaFast > emaSlow and close[1] < emaFast and close > emaFast
entryDnT() => emaFast < emaSlow and close[1] > emaFast and close < emaFast
//Conservative Entry True/False Condition
entryUpTrend = emaFast > emaSlow and close[1] < emaFast and close > emaFast ? 1 : 0
entryDnTrend = emaFast < emaSlow and close[1] > emaFast and close < emaFast ? 1 : 0
//Define Up and Down Trend for Trend Arrows at Top and Bottom of Screen
upTrend = emaFast >= emaSlow
downTrend = emaFast < emaSlow
//Definition for Conseervative Entry Up and Down PlotArrows
codiff = entryUpTrend == 1 ? entryUpTrend : 0
codiff2 = entryDnTrend == 1 ? entryDnTrend : 0
//Color definition for Moving Averages
col = emaFast > emaSlow ? lime : emaFast < emaSlow ? red : yellow
//Moving Average Plots and Fill
p1 = plot(emaSlow, title="Slow MA", style=linebr, linewidth=4, color=col)
p2 = plot(emaFast, title="Slow MA", style=linebr, linewidth=2, color=col)
fill(p1, p2, color=silver, transp=50)
//Aggressive Entry, Conservative Entry Highlight Bars
barcolor(sae and pullbackUpT() ? yellow : sae and pullbackDnT() ? yellow : na)
barcolor(sce and entryUpT() ? aqua : sce and entryDnT() ? aqua : na)
//Trend Triangles at Top and Bottom of Screen
plotshape(st and upTrend ? upTrend : na, title="Conservative Buy Entry Triangle",style=shape.triangleup, location=location.bottom, color=lime, transp=0, offset=0)
plotshape(st and downTrend ? downTrend : na, title="Conservative Short Entry Triangle",style=shape.triangledown, location=location.top, color=red, transp=0, offset=0)
//Plot Arrows OR Letters B and S for Buy Sell Signals
plotarrow(pa and codiff ? codiff : na, title="Up Entry Arrow", colorup=lime, maxheight=30, minheight=30, transp=0)
plotarrow(pa and codiff2*-1 ? codiff2*-1 : na, title="Down Entry Arrow", colordown=red, maxheight=30, minheight=30, transp=0)
plotchar(sl and codiff ? low - tr : na, title="Buy Entry", offset=0, char='B', location=location.absolute, color=lime, transp=0)
plotchar(sl and codiff2 ? high + tr : na, title="Short Entry", offset=0, char='S', location=location.absolute, color=red, transp=0)