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 Intcode
+import qualified Data.Text.IO as TIO
import qualified Data.IntMap.Strict as M
import Data.IntMap.Strict ((!))
import Data.List
import Data.Function (on)
-type Memory = M.IntMap Int
-
-data Machine = Machine { _memory :: Memory
- , _ip :: Int
- , _inputIndex :: Int
- }
- deriving (Show, Eq)
-
-type ProgrammedMachine = RWS [Int] [Int] Machine
data EncapsulatedMacine = EncapsulatedMacine
{ _machine :: Machine
, _executionState :: ExecutionState
- , _initialInput :: [Int]
- , _currentInput :: [Int]
- , _machineOutput :: [Int]
+ , _initialInput :: [Integer]
+ , _currentInput :: [Integer]
+ , _machineOutput :: [Integer]
} deriving (Show, Eq)
-data ParameterMode = Position | Immediate deriving (Ord, Eq, Show)
-
-data ExecutionState = Runnable | Blocked | Terminated deriving (Ord, Eq, Show)
-
type Pipeline = M.IntMap EncapsulatedMacine
main :: IO ()
main = do
text <- TIO.readFile "data/advent07.txt"
- let mem = successfulParse text
+ let mem = parseMachineMemory text
print $ part1 mem
print $ part2 mem
chainMachines mem settings = foldl' (chainMachine mem) 0 settings
-chainMachine mem prevOutput setting = findMachineOutput [setting, prevOutput] mem
+chainMachine mem prevOutput setting = last output
+ where (_, _, output) = runProgram [setting, prevOutput] mem
part2 mem = maximum outputs
pipelines = map (buildPipeline mem) inputs
outputs = map runPipeline pipelines
-buildPipeline :: [Int] -> [Int] -> Pipeline
+buildPipeline :: [Integer] -> [Integer] -> Pipeline
buildPipeline mem input = M.insert 0 machine0' pipeline
where pipeline = M.fromList $ zip [0..] $ map (encapsulate mem) input
machine0 = pipeline!0
machine0' = machine0 { _initialInput = (_initialInput machine0) ++ [0]}
-encapsulate :: [Int] -> Int -> EncapsulatedMacine
+encapsulate :: [Integer] -> Integer -> EncapsulatedMacine
encapsulate mem input = EncapsulatedMacine
{ _machine = makeMachine mem
, _executionState = Runnable
}
-runPipeline :: Pipeline -> Int
+runPipeline :: Pipeline -> Integer
-- runPipeline pipeline | trace (pipelineTrace pipeline) False = undefined
runPipeline pipeline
| finished pipeline = last $ _machineOutput $ snd $ M.findMax pipeline
, show $ _machineOutput e
]
-
finished :: Pipeline -> Bool
finished = M.null . runnableMachines
}
where machine = _machine e
input = _currentInput e
- (halted, machine', output) = runRWS runAll input machine
-
-
-findMachineOutput :: [Int] -> [Int] -> Int
-findMachineOutput inputs program = last output
- where (_haltedBecause, _machine, output) = runRWS runAll inputs (makeMachine program)
-
-
-makeMachine :: [Int] -> Machine
-makeMachine memory = Machine {_ip = 0, _inputIndex = 0
- , _memory = M.fromList $ zip [0..] memory
- }
-
-
-runAll :: ProgrammedMachine ExecutionState
-runAll = do mem <- gets _memory
- ip <- gets _ip
- input <- ask
- iIndex <- gets _inputIndex
- let acutalInputLength = length input
- let requiredInputLength = iIndex + 1
- if (mem!ip == 99)
- then return Terminated
- else if (mem!ip == 3 && requiredInputLength > acutalInputLength)
- then return Blocked
- else 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 :: Int -> ProgrammedMachine ()
--- 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 :: Int -> [ParameterMode] -> ProgrammedMachine ()
--- 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
+ (halted, machine', output) = runMachine input machine
projects / advent-of-code-19.git / blobdiff