module Michelson.Interpret.Pack
( packCode'
, packT'
, packValue
, packValue'
, encodeIntPayload
) where
import Prelude hiding (EQ, GT, LT)
import Control.Exception (assert)
import qualified Data.Binary.Put as Bi
import qualified Data.Bits as Bits
import qualified Data.ByteArray as ByteArray
import qualified Data.ByteString.Lazy as LBS
import qualified Data.Map as Map
import Data.Singletons (SingI(..))
import Michelson.Text
import Michelson.Typed
import Tezos.Address (Address(..), ContractHash(..))
import Tezos.Core (ChainId(..), Mutez(..), timestampToSeconds)
import Tezos.Crypto (KeyHash(..), KeyHashTag(..), PublicKey(..), signatureToBytes)
import qualified Tezos.Crypto.Ed25519 as Ed25519
import qualified Tezos.Crypto.P256 as P256
import qualified Tezos.Crypto.Secp256k1 as Secp256k1
import Util.Peano (peanoValSing)
packValue :: PackedValScope t => Value t -> LByteString
packValue x = "\x05" <> encodeValue x
packValue' :: PackedValScope t => Value t -> ByteString
packValue' = LBS.toStrict . packValue
packT' :: forall (t :: T). SingI t => ByteString
packT' = LBS.toStrict $ encodeT' @t
packCode' :: Instr inp out -> ByteString
packCode' = LBS.toStrict . encodeInstrs
surround :: LByteString -> LByteString -> ByteString -> LByteString
surround prefix suffix main = prefix <> LBS.fromStrict main <> suffix
encodeValue :: forall t. PackedValScope t => Value t -> LByteString
encodeValue val = case (val, sing @t) of
(VC cval, _) -> encodeCValue cval
(VKey s, _) -> encodeBytes . LBS.fromStrict $ case s of
PublicKeyEd25519 pk -> "\x00" <> Ed25519.publicKeyToBytes pk
PublicKeySecp256k1 pk -> "\x01" <> Secp256k1.publicKeyToBytes pk
PublicKeyP256 pk -> "\x02" <> P256.publicKeyToBytes pk
(VUnit, _) -> "\x03\x0b"
(VSignature x, _) -> encodeBytes . LBS.fromStrict $ signatureToBytes x
(VChainId x, _) ->
encodeBytes . LBS.fromStrict $
ByteArray.convert (unChainId x)
(VOption (Just x), STOption _) -> "\x05\x09" <> encodeValue x
(VOption Nothing, _) -> "\x03\x06"
(VList xs, STList _) -> encodeList encodeValue xs
(VSet xs, _) -> encodeList encodeCValue (toList xs)
(VContract addr sepc, _) -> encodeEpAddress $ EpAddress addr (sepcName sepc)
(VPair (v1, v2), STPair l _) ->
case (checkOpPresence l, checkBigMapPresence l) of
(OpAbsent, BigMapAbsent) -> "\x07\x07" <> encodeValue v1 <> encodeValue v2
(VOr (Left v), STOr l _) ->
case (checkOpPresence l, checkBigMapPresence l) of
(OpAbsent, BigMapAbsent) -> "\x05\x05" <> encodeValue v
(VOr (Right v), STOr l _) ->
case (checkOpPresence l, checkBigMapPresence l) of
(OpAbsent, BigMapAbsent) -> "\x05\x08" <> encodeValue v
(VLam lam, _) -> encodeInstrs $ rfAnyInstr lam
(VMap m, STMap _ _) -> encodeMap m
encodeCValue :: CValue t -> LByteString
encodeCValue = \case
CvInt x -> encodeNumeric x
CvNat x -> encodeNumeric x
CvString text -> encodeString text
CvBytes bytes -> encodeBytes (LBS.fromStrict bytes)
CvMutez x -> encodeNumeric (unMutez x)
CvBool True -> "\x03\x0a"
CvBool False -> "\x03\x03"
CvKeyHash kh -> encodeBytes $ encodeKeyHashRaw kh
CvTimestamp x -> encodeNumeric (timestampToSeconds @Integer x)
CvAddress addr -> encodeEpAddress addr
encodeLength :: Int -> LByteString
encodeLength = Bi.runPut . Bi.putWord32be . fromIntegral
encodeAsList :: LByteString -> LByteString
encodeAsList bs = encodeLength (length bs) <> bs
encodeList :: (a -> LByteString) -> [a] -> LByteString
encodeList encodeElem l = "\x02" <> encodeAsList (LBS.concat $ map encodeElem l)
encodeString :: MText -> LByteString
encodeString text = "\x01" <> encodeAsList (encodeUtf8 $ unMText text)
encodeBytes :: LByteString -> LByteString
encodeBytes bs =
"\x0a" <> encodeAsList bs
encodeEpName :: EpName -> LByteString
encodeEpName = encodeUtf8 . unEpName
encodeMap :: (PackedValScope v) => Map (CValue k) (Value v) -> LByteString
encodeMap m =
encodeList (\(k, v) -> "\x07\x04" <> encodeCValue k <> encodeValue v) (Map.toList m)
encodeKeyHashRaw :: KeyHash -> LByteString
encodeKeyHashRaw kh = (<> LBS.fromStrict (khBytes kh)) $
case khTag kh of
KeyHashEd25519 -> "\x00"
KeyHashSecp256k1 -> "\x01"
KeyHashP256 -> "\x02"
encodeAddress :: Address -> LByteString
encodeAddress = \case
KeyAddress keyHash -> "\x00" <> (encodeKeyHashRaw keyHash)
ContractAddress (ContractHash address) -> surround "\x01" "\x00" address
encodeEpAddress :: EpAddress -> LByteString
encodeEpAddress (EpAddress addr epName) =
encodeBytes $ encodeAddress addr <> encodeEpName epName
encodeIntPayload :: Integer -> LByteString
encodeIntPayload = LBS.pack . toList . doEncode True
where
doEncode :: Bool -> Integer -> NonEmpty Word8
doEncode isFirst a
| a >= byteWeight =
let (hi, lo) = a `divMod` byteWeight
byte = Bits.setBit (fromIntegral @_ @Word8 lo) 7
in byte :| toList (doEncode False hi)
| a >= 0 =
one (fromIntegral @_ @Word8 a)
| otherwise = assert isFirst $
let h :| t = doEncode True (-a)
in Bits.setBit h 6 :| t
where
byteWeight = if isFirst then 64 else 128
encodeNumeric :: Integral i => i -> LByteString
encodeNumeric i = "\x00" <> encodeIntPayload (fromIntegral i)
encodeInstrs :: Instr inp out -> LByteString
encodeInstrs = encodeList id . one . encodeInstr
encodeInstr :: forall inp out. Instr inp out -> LByteString
encodeInstr = \case
InstrWithNotes _ a -> encodeInstr a
FrameInstr _ i ->
encodeInstr i
Seq a b ->
encodeInstr a <> encodeInstr b
Nop ->
mempty
Nested i ->
encodeInstrs i
DocGroup _ i ->
encodeInstrs i
Ext _ ->
""
DROP ->
"\x03\x20"
DROPN s ->
"\x05\x20" <> encodeNumeric (peanoValSing s)
DUP ->
"\x03\x21"
SWAP ->
"\x03\x4c"
DIG s ->
"\x05\x70" <> encodeNumeric (peanoValSing s)
DUG s ->
"\x05\x71" <> encodeNumeric (peanoValSing s)
PUSH (a :: Value t) ->
"\x07\x43" <> encodeT' @t <> encodeValue a
SOME ->
"\x03\x46"
NONE | _ :: Proxy ('TOption t ': s) <- Proxy @out ->
"\x05\x3e" <> encodeT' @t
UNIT ->
"\x03\x4f"
IF_NONE a b ->
"\x07\x2f" <> encodeInstrs a <> encodeInstrs b
PAIR ->
"\x03\x42"
(AnnCAR _) ->
"\x03\x16"
(AnnCDR _) ->
"\x03\x17"
LEFT | _ :: Proxy ('TOr l r ': s) <- Proxy @out ->
"\x05\x33" <> encodeT' @r
RIGHT | _ :: Proxy ('TOr l r ': s) <- Proxy @out ->
"\x05\x44" <> encodeT' @l
IF_LEFT a b ->
"\x07\x2e" <> encodeInstrs a <> encodeInstrs b
NIL | _ :: Proxy ('TList t ': s) <- Proxy @out ->
"\x05\x3d" <> encodeT' @t
CONS ->
"\x03\x1b"
IF_CONS a b ->
"\x07\x2d" <> encodeInstrs a <> encodeInstrs b
SIZE ->
"\x03\x45"
EMPTY_SET | _ :: Proxy ('TSet t ': s) <- Proxy @out ->
"\x05\x24" <> encodeT' @('Tc t)
EMPTY_MAP | _ :: Proxy ('TMap k v ': s) <- Proxy @out ->
"\x07\x23" <> encodeT' @('Tc k) <> encodeT' @v
EMPTY_BIG_MAP | _ :: Proxy ('TBigMap k v ': s) <- Proxy @out ->
"\x07\x72" <> encodeT' @('Tc k) <> encodeT' @v
MAP a ->
"\x05\x38" <> encodeInstrs a
ITER a ->
"\x05\x52" <> encodeInstrs a
MEM ->
"\x03\x39"
GET ->
"\x03\x29"
UPDATE ->
"\x03\x50"
IF a b ->
"\x07\x2c" <> encodeInstrs a <> encodeInstrs b
LOOP a ->
"\x05\x34" <> encodeInstrs a
LOOP_LEFT a ->
"\x05\x53" <> encodeInstrs a
LAMBDA (v :: Value ('TLambda i o)) ->
"\x09\x31" <>
encodeAsList (encodeT' @i <> encodeT' @o <> encodeValue v) <>
encodeLength 0
EXEC ->
"\x03\x26"
APPLY ->
"\x03\x73"
DIP a ->
"\x05\x1f" <> encodeInstrs a
DIPN s a ->
"\x07\x1f" <> encodeNumeric (peanoValSing s) <> encodeInstrs a
FAILWITH ->
"\x03\x27"
CAST | _ :: Proxy (t ': s) <- Proxy @out ->
"\x05\x57" <> encodeT' @t
RENAME ->
"\x03\x58"
PACK ->
"\x03\x0c"
UNPACK | _ :: Proxy ('TOption t ': s) <- Proxy @out ->
"\x05\x0d" <> encodeT' @t
CONCAT ->
"\x03\x1a"
CONCAT' ->
"\x03\x1a"
SLICE ->
"\x03\x6f"
ISNAT ->
"\x03\x56"
ADD ->
"\x03\x12"
SUB ->
"\x03\x4b"
MUL ->
"\x03\x3a"
EDIV ->
"\x03\x22"
ABS ->
"\x03\x11"
NEG ->
"\x03\x3b"
LSL ->
"\x03\x35"
LSR ->
"\x03\x36"
OR ->
"\x03\x41"
AND ->
"\x03\x14"
XOR ->
"\x03\x51"
NOT ->
"\x03\x3f"
COMPARE ->
"\x03\x19"
EQ ->
"\x03\x25"
NEQ ->
"\x03\x3c"
LT ->
"\x03\x37"
GT ->
"\x03\x2a"
LE ->
"\x03\x32"
GE ->
"\x03\x28"
INT ->
"\x03\x30"
SELF ->
error "SELF should not appear in lambda"
CONTRACT _ _ | _ :: Proxy ('TOption ('TContract t) ': s) <- Proxy @out ->
"\x05\x55" <> encodeT' @t
TRANSFER_TOKENS ->
"\x03\x4d"
SET_DELEGATE ->
"\x03\x4e"
CREATE_CONTRACT (FullContract instr _ _)
| _ :: Instr '[ 'TPair p g ] '[ 'TPair ('TList 'TOperation) g ] <- instr ->
let contents =
[ "\x05\x00" <> encodeT' @p
, "\x05\x01" <> encodeT' @g
, "\x05\x02" <> encodeInstrs instr
]
in "\x05\x1d" <> encodeList id contents
IMPLICIT_ACCOUNT ->
"\x03\x1e"
NOW ->
"\x03\x40"
AMOUNT ->
"\x03\x13"
BALANCE ->
"\x03\x15"
CHECK_SIGNATURE ->
"\x03\x18"
SHA256 ->
"\x03\x0f"
SHA512 ->
"\x03\x10"
BLAKE2B ->
"\x03\x0e"
HASH_KEY ->
"\x03\x2b"
STEPS_TO_QUOTA ->
"\x03\x4a"
SOURCE ->
"\x03\x47"
SENDER ->
"\x03\x48"
ADDRESS ->
"\x03\x54"
CHAIN_ID ->
"\x03\x75"
encodeT :: T -> LByteString
encodeT = \case
Tc ct -> encodeCT ct
TKey -> "\x03\x5c"
TUnit -> "\x03\x6c"
TSignature -> "\x03\x67"
TChainId -> "\x03\x74"
TOption t -> "\x05\x63" <> encodeT t
TList t -> "\x05\x5f" <> encodeT t
TSet t -> "\x05\x66" <> encodeCT t
TOperation -> "\x03\x6d"
TContract t -> "\x05\x5a" <> encodeT t
TPair a b -> "\x07\x65" <> encodeT a <> encodeT b
TOr a b -> "\x07\x64" <> encodeT a <> encodeT b
TLambda a r -> "\x07\x5e" <> encodeT a <> encodeT r
TMap k v -> "\x07\x60" <> encodeCT k <> encodeT v
TBigMap k v -> "\x07\x61" <> encodeCT k <> encodeT v
encodeT' :: forall (t :: T). SingI t => LByteString
encodeT' = encodeT (fromSingT $ sing @t)
encodeCT :: CT -> LByteString
encodeCT = ("\x03" <>) . \case
CInt -> "\x5b"
CNat -> "\x62"
CString -> "\x68"
CBytes -> "\x69"
CMutez -> "\x6a"
CBool -> "\x59"
CKeyHash -> "\x5d"
CTimestamp -> "\x6b"
CAddress -> "\x6e"