X-Git-Url: https://git.njae.me.uk/?p=advent-of-code-19.git;a=blobdiff_plain;f=advent05%2Fsrc%2Fadvent05rws.hs;fp=advent05%2Fsrc%2Fadvent05rws.hs;h=0000000000000000000000000000000000000000;hp=b82bbf752c9ed237990daf815b0392b77c316927;hb=9c092291e0a897ae7c8b3d59b04a0cd1938bbcaf;hpb=6bee1a6e12e08b5e130add0d3e1f8b80b66b722a

diff --git a/advent05/src/advent05rws.hs b/advent05/src/advent05rws.hs
deleted file mode 100644
index b82bbf7..0000000
--- a/advent05/src/advent05rws.hs
+++ /dev/null
@@ -1,170 +0,0 @@
-import Debug.Trace
-
-import Data.Text (Text)
-import qualified Data.Text.IO as TIO
-
-import Data.Void (Void)
-
-import Text.Megaparsec hiding (State)
-import Text.Megaparsec.Char
-import qualified Text.Megaparsec.Char.Lexer as L
-import qualified Control.Applicative as CA
-
-import Control.Monad (unless)
-import Control.Monad.State.Strict
-import Control.Monad.Reader
-import Control.Monad.Writer
-import Control.Monad.RWS.Strict
-
-
-import qualified Data.IntMap.Strict as M
-import Data.IntMap.Strict ((!))
-import Data.List
-
-type Memory = M.IntMap Int
-
-data Machine = Machine { _memory :: Memory
-                       , _ip :: Int
-                       , _inputIndex :: Int
-                       } 
-               deriving (Show, Eq)
-
-type ProgrammedMachine = RWS [Int] [Int] Machine ()
-
-data ParameterMode = Position | Immediate deriving (Ord, Eq, Show)
-
-
-main :: IO ()
-main = do 
-        text <- TIO.readFile "data/advent05.txt"
-        let mem = successfulParse text
-        print $ findMachineOutput [1] mem
-        print $ findMachineOutput [5] mem
-
-findMachineOutput :: [Int] -> [Int] -> Int
-findMachineOutput inputs program = last output
-    where (_machine, output) = execRWS runAll inputs (makeMachine program)
-
-
-makeMachine :: [Int] -> Machine
-makeMachine memory = Machine    {_ip = 0, _inputIndex = 0
-                                , _memory = M.fromList $ zip [0..] memory
-                                }
-
-
-runAll :: ProgrammedMachine
-runAll = do mem <- gets _memory
-            ip <- gets _ip
-            unless (mem!ip == 99)
-                do runStep
-                   runAll
-
-runStep :: ProgrammedMachine
-runStep = 
-    do mem <- gets _memory
-       ip <- gets _ip
-       let opcode = (mem!ip) `mod` 100
-       let modes = parameterModes ((mem!ip) `div` 100)
-       fetchInput opcode
-       putOutput opcode modes
-       mem' <- gets _memory
-       let (mem'', ip') = perform opcode ip modes mem'
-       modify (\m -> m {_ip = ip', _memory = mem''})
-
-
--- fetchInput opcode | trace ("Input with opcode " ++ show opcode) False = undefined
-fetchInput 3 =
-    do mem <- gets _memory
-       ip <- gets _ip
-       inputIndex <- gets _inputIndex
-       inputs <- ask 
-       let mem' = iInsert (ip + 1) (inputs!!inputIndex) mem
-       modify (\m -> m {_inputIndex = inputIndex + 1, _memory = mem'})
-fetchInput _ = return ()
-
-
--- putOutput opcode _modes | trace ("Output with opcode " ++ show opcode) False = undefined
-putOutput 4 modes =
-    do mem <- gets _memory
-       ip <- gets _ip
-       let v = getMemoryValue (ip + 1) (modes!!0) mem
-       tell [v]
-putOutput _ _ = return ()       
-
-
-perform :: Int -> Int -> [ParameterMode] -> Memory -> (Memory, Int)
--- perform instr ip modes mem | trace ("Perform ip " ++ show ip ++ " opcode " ++ show instr ++ " modes " ++ (show (take 3 modes)) ++ " args " ++ (intercalate ", " (map show [(mem!(ip+1)), (mem!(ip+2)), (mem!(ip+3))]))) False = undefined
-perform 1 ip modes mem = (iInsert (ip + 3) (a + b) mem, ip + 4)
-    where a = getMemoryValue (ip + 1) (modes!!0) mem
-          b = getMemoryValue (ip + 2) (modes!!1) mem
-perform 2 ip modes mem = (iInsert (ip + 3) (a * b) mem, ip + 4)
-    where a = getMemoryValue (ip + 1) (modes!!0) mem
-          b = getMemoryValue (ip + 2) (modes!!1) mem
-perform 3 ip _ mem = (mem, ip + 2)
-perform 4 ip _ mem = (mem, ip + 2)
-perform 5 ip modes mem = (mem, ip')
-    where a = getMemoryValue (ip + 1) (modes!!0) mem
-          b = getMemoryValue (ip + 2) (modes!!1) mem
-          ip' = if a /= 0 then b else ip + 3
-perform 6 ip modes mem = (mem, ip')
-    where a = getMemoryValue (ip + 1) (modes!!0) mem
-          b = getMemoryValue (ip + 2) (modes!!1) mem
-          ip' = if a == 0 then b else ip + 3
-perform 7 ip modes mem = (iInsert (ip + 3) res mem, ip + 4)
-    where a = getMemoryValue (ip + 1) (modes!!0) mem
-          b = getMemoryValue (ip + 2) (modes!!1) mem
-          res = if a < b then 1 else 0
-perform 8 ip modes mem = (iInsert (ip + 3) res mem, ip + 4)
-    where a = getMemoryValue (ip + 1) (modes!!0) mem
-          b = getMemoryValue (ip + 2) (modes!!1) mem
-          res = if a == b then 1 else 0
-perform _ ip _ mem = (mem, ip)
-
-
-getMemoryValue loc Position mem = mem!>loc
-getMemoryValue loc Immediate mem = mem!loc
-
-
-parameterModes :: Int -> [ParameterMode]
-parameterModes modeCode = unfoldr generateMode modeCode
-
-generateMode :: Int -> Maybe (ParameterMode, Int)
-generateMode modeCode = Just (mode, modeCode `div` 10)
-    where mode = case (modeCode `mod` 10) of 
-                    0 -> Position
-                    1 -> Immediate
-
-
--- Some IntMap utility functions, for syntactic sugar
-
--- prefix version of (!)
-lkup k m = m!k
-
--- indirect lookup
-(!>) m k = m!(m!k)
-
--- indirect insert
-iInsert k v m = M.insert (m!k) v m
-
-
-
--- Parse the input file
-type Parser = Parsec Void Text
-
-sc :: Parser ()
-sc = L.space (skipSome spaceChar) CA.empty CA.empty
--- sc = L.space (skipSome (char ' ')) CA.empty CA.empty
-
-lexeme  = L.lexeme sc
-integer = lexeme L.decimal
-signedInteger = L.signed sc integer
-symb = L.symbol sc
-comma = symb ","
-
-memoryP = signedInteger `sepBy` comma
-
-successfulParse :: Text -> [Int]
-successfulParse input = 
-        case parse memoryP "input" input of
-                Left  _err -> [] -- TIO.putStr $ T.pack $ parseErrorPretty err
-                Right memory -> memory
\ No newline at end of file