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add Document serialisation with format and version
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| -- | | ||
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| module Pact.Core.Serialise where | ||
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| import Data.ByteString (ByteString, fromStrict) | ||
| import Data.Word (Word32) | ||
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| import Pact.Core.Info | ||
| import Pact.Core.Builtin | ||
| import Pact.Core.IR.Term | ||
| import qualified Codec.Serialise as S | ||
| import qualified Codec.CBOR.Encoding as S | ||
| import qualified Codec.CBOR.Decoding as S | ||
| import Codec.CBOR.Write (toStrictByteString) | ||
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| import Pact.Core.Serialise.CBOR () | ||
| import Data.Bifunctor | ||
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| import Data.Int (Int64) | ||
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| -- | Document version | ||
| newtype DocumentVersion | ||
| = DocumentVersion { unDocumentVersion :: Word32 } | ||
| deriving (Show, Eq, Ord) | ||
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| -- | Supported Document Formats | ||
| data DocumentFormat | ||
| = DocumentCBOR | ||
| deriving (Show, Eq, Enum, Bounded) | ||
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| data DecodeError | ||
| = DecodeFailure Int64 String | ||
| deriving (Show, Eq) | ||
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| data Document a | ||
| = Document | ||
| { _documentVersion :: DocumentVersion | ||
| , _documentFormat :: DocumentFormat | ||
| , _documentContent :: a | ||
| } deriving (Show, Eq) | ||
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| data Serialise | ||
| = Serialise | ||
| { _encodeModule :: EvalModule RawBuiltin SpanInfo -> ByteString | ||
| , _decodeModule :: ByteString -> Either DecodeError (Document (EvalModule RawBuiltin SpanInfo)) | ||
| } | ||
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| serialiseCBOR :: Serialise | ||
| serialiseCBOR = Serialise | ||
| { _encodeModule = toStrictByteString . S.encode . Document version format | ||
| , _decodeModule = first toErr . S.deserialiseOrFail . fromStrict | ||
| } | ||
| where | ||
| version = DocumentVersion 0 | ||
| format = DocumentCBOR | ||
| toErr (S.DeserialiseFailure offset msg) = DecodeFailure offset msg | ||
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| instance S.Serialise a => S.Serialise (Document a) where | ||
| encode (Document v f c) = S.encode v <> S.encode f <> S.encode c | ||
| decode = Document <$> S.decode <*> S.decode <*> S.decode | ||
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| instance S.Serialise DocumentVersion where | ||
| encode (DocumentVersion v) = S.encode v | ||
| decode = DocumentVersion <$> S.decode | ||
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| instance S.Serialise DocumentFormat where | ||
| encode = \case | ||
| DocumentCBOR -> S.encodeWord 0 | ||
| decode = S.decodeWord >>= \case | ||
| 0 -> pure DocumentCBOR | ||
| _ -> fail "unexpected decoding" |