Convert Thinkscript indicator to Pinescript

Convert Thinkscript indicator to pine script. Below is Thinkscript code def h = high; def l = low; def c = close; def x = barNumber(); def nan = [login to view URL]; def rth = getTime() >= RegularTradingStart(getYYYYMMDD()) and getTime() <= RegularTradingEnd(getYYYYMMDD()); def LOD = if rth and !rth[1] then l else if rth and l < LOD[1] then l else LOD[1]; def LOD_x = if l == LOD and rth then x else nan; def LOD_h = if l == LOD then h else LOD_h[1]; plot LOD_h_line = if x >= highestAll(LOD_x) then highestAll(if isNaN(c[-1]) then LOD_h else nan) else nan; [login to view URL](createColor(25,180,25)); [login to view URL](); [login to view URL](); def upBar = if c crosses above LOD_H_line and RTH then x else upBar[1]; plot ArrowUP = if x == highestAll(upBar) then l - (2*TickSize()) else nan; [login to view URL](PaintingStrategy.Arrow_UP); [login to view URL](3); [login to view URL](createColor(25,180,25)); [login to view URL](); [login to view URL](); def HOD = if rth and !rth[1] then h else if rth and h > HOD[1] then h else HOD[1]; def HOD_x = if h == HOD and rth then x else nan; def HOD_l = if h == HOD then l else HOD_l[1]; plot HOD_l_line = if x >= highestAll(HOD_x) then highestAll(if isNaN(c[-1]) then HOD_l else nan) else nan; [login to view URL](createColor(75, 55, 175)); [login to view URL](); [login to view URL](); def dnBar = if c crosses below HOD_l_line then x else dnBar[1]; plot ArrowDN = if x == highestAll(dnBar) then h + (2*TickSize()) else nan; [login to view URL](PaintingStrategy.Arrow_DOWN); [login to view URL](3); [login to view URL](createColor(75,55,175)); [login to view URL](); [login to view URL]();