{-# LANGUAGE MultiParamTypeClasses #-}
module Language.SpirV.LoopControl where

import Data.Word (Word32)
import Language.SpirV.SpirEnum
import qualified Language.SpirV.Capability as Capability


-- | <https:\/\/www.khronos.org\/registry\/spir-v\/specs\/1.0\/SPIRV.html#_a_id_loop_control_a_loop_control Source for Loop Control>
data LoopControl =
    None
  | Unroll
  | DontUnroll
  deriving(Read, Show, Eq, Ord)

instance SpirEnum LoopControl Word32 where
  toWord None = 0
  toWord Unroll = 1
  toWord DontUnroll = 2

  fromWord 0 = Just None
  fromWord 1 = Just Unroll
  fromWord 2 = Just DontUnroll
  fromWord _ = Nothing

  
  requiredCapabilities _ = []