noughtmare

{-# LANGUAGE MagicHash #-}

import GHC.Exts
import Foreign
import GHC.Word
import Control.Arrow ((>>>))

rotl64 :: Word64 -> Int -> Word64
rotl64 (W64# x#) (I# i#) = W64# ((x# `uncheckedShiftL64#` i#) `or64#` (x# `uncheckedShiftRL64#` (64# -# i#)))

noughtmare

#!/usr/bin/env cabal
{- cabal:
build-depends: base >= 4.19, bytestring, primitive >= 0.9, mmap
default-language: GHC2021
ghc-options: -Wall -O2 -fllvm
-}
{-# LANGUAGE ExtendedLiterals #-}
{-# LANGUAGE MagicHash, UnboxedTuples, UnliftedDatatypes #-}

import Data.ByteString (ByteString)

noughtmare

import qualified Data.Map.Strict as Map

data Exp = Var String | Lam String Exp | App Exp String | Let String Exp Exp
  | Con String [String] | Case Exp (Map.Map String ([String], Exp))
  deriving Show

data State = State Heap Control Environment Stack deriving Show

data Heap = Heap !Int !(Map.Map String (Exp, Environment)) deriving Show
type Control = Exp

noughtmare

import Prelude hiding (until)
import Test.Tasty.Bench

{-# NOINLINE until #-}
until                   :: (a -> Bool) -> (a -> a) -> a -> a
until p f = go
  where
    go x | p x          = x
         | otherwise    = go (f x)

noughtmare

{-# LANGUAGE UnboxedTuples #-}

import Control.Monad
import Test.Tasty.Bench
import Data.IORef

{-# NOINLINE countdownIO #-}
countdownIO :: IO Integer -> (Integer -> IO ()) -> IO Integer
countdownIO get put = go where
  go = do

noughtmare

import Data.List qualified as List
import Test.Tasty.Bench.Fit (fit, mkFitConfig)

data CFG = CFG String [(String, [Symbol])]

data Symbol = T Char | NT String

splits :: String -> [(String, String)]
splits [] = [([], [])]
splits (x : xs) = ([], x : xs) : map (\(y, z) -> (x : y, z)) (splits xs)

noughtmare

these 30 derivations will be built:
  /nix/store/8bp2iihry7scnlnsw240v71ydh70agg7-bash-5.1-p16.drv
  /nix/store/fdsax0a1p3wqnnwb4gsxzr1y55yhgc77-binutils-2.39.drv
  /nix/store/sr0jdc6c0cj5chrgzbvvsci9w64scns0-libxcrypt-4.4.30.drv
  /nix/store/4jjh8kxnbk60x84nz6wzfsnyp2fgdp64-perl-5.36.0.drv
  /nix/store/s8srp5k52fbgn168b8nlmdrndsyc76v6-perl5.36.0-gettext-1.07.drv
  /nix/store/v8f4lwzmcgiwk0680aa2z1cd8c7zmhrl-help2man-1.49.2.drv
  /nix/store/z0har4q95p7pagbd3755qi5ans8zihn0-libtool-2.4.7.drv
  /nix/store/76n41vykcagiza65nv8kcy4xvr9yzif1-hook.drv
  /nix/store/ipfm2lrrbdj9w6vl2j4w0qj9p9jp73zm-acl-2.3.1.drv

noughtmare

{-# LANGUAGE PatternSynonyms #-}

import Control.Monad.State
import Data.Foldable (traverse_)

type Id = String
newtype Parser = Parser { alts :: [P] }
data P = T Char Parser | NT Id Parser Parser | Success

success :: Parser

noughtmare

{-# LANGUAGE QuantifiedConstraints #-}
{-# OPTIONS_GHC -Wall #-}

import Control.Arrow ((>>>))
import Control.Monad

data Free f a = Pure a | Free (f (Free f a))

deriving instance Functor f => Functor (Free f)
instance Functor f => Applicative (Free f) where

noughtmare

{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE OverloadedLabels #-}

import GHC.TypeLits
import Data.Kind
import GHC.OverloadedLabels
import Data.Function ((&))