Hammer on vwap or ema20 or on the pivot point

I want the pinescript code for bullish hammer / bearish hammer or evening star forming on the VWAP or 20EMA or the pivot point.

Is it possible in tradingview???

Please give it to me in PineScript as I use tradingview.

Please reply to me fast. Sorrry for being rude, but I want it quickly.