Coders.hs

-- Note: this is an automatically generated file. Do not edit.
-- | Term decoders for hydra.coders

module Hydra.Decode.Coders where
import qualified Hydra.Coders as Coders
import qualified Hydra.Core as Core
import qualified Hydra.Errors as Errors
import qualified Hydra.Extract.Core as ExtractCore
import qualified Hydra.Graph as Graph
import qualified Hydra.Lib.Eithers as Eithers
import qualified Hydra.Lib.Maps as Maps
import qualified Hydra.Lib.Maybes as Maybes
import qualified Hydra.Lib.Strings as Strings
import Prelude hiding  (Enum, Ordering, decodeFloat, encodeFloat, fail, map, pure, sum)
import qualified Data.Scientific as Sci
coderDirection :: Graph.Graph -> Core.Term -> Either Errors.DecodingError Coders.CoderDirection
coderDirection cx raw =
    Eithers.either (\err -> Left err) (\stripped -> case stripped of
      Core.TermInject v0 ->
        let field = Core.injectionField v0
            fname = Core.fieldName field
            fterm = Core.fieldTerm field
            variantMap =
                    Maps.fromList [
                      (Core.Name "encode", (\input -> Eithers.map (\t -> Coders.CoderDirectionEncode) (ExtractCore.decodeUnit cx input))),
                      (Core.Name "decode", (\input -> Eithers.map (\t -> Coders.CoderDirectionDecode) (ExtractCore.decodeUnit cx input)))]
        in (Maybes.maybe (Left (Errors.DecodingError (Strings.cat [
          "no such field ",
          (Core.unName fname),
          " in union"]))) (\f -> f fterm) (Maps.lookup fname variantMap))
      _ -> Left (Errors.DecodingError "expected union")) (ExtractCore.stripWithDecodingError cx raw)
languageName :: Graph.Graph -> Core.Term -> Either Errors.DecodingError Coders.LanguageName
languageName cx raw =
    Eithers.either (\err -> Left err) (\stripped -> case stripped of
      Core.TermWrap v0 -> Eithers.map (\b -> Coders.LanguageName b) ((\raw2 -> Eithers.either (\err -> Left err) (\stripped2 -> case stripped2 of
        Core.TermLiteral v1 -> case v1 of
          Core.LiteralString v2 -> Right v2
          _ -> Left (Errors.DecodingError "expected string literal")
        _ -> Left (Errors.DecodingError "expected literal")) (ExtractCore.stripWithDecodingError cx raw2)) (Core.wrappedTermBody v0))
      _ -> Left (Errors.DecodingError "expected wrapped type")) (ExtractCore.stripWithDecodingError cx raw)
traversalOrder :: Graph.Graph -> Core.Term -> Either Errors.DecodingError Coders.TraversalOrder
traversalOrder cx raw =
    Eithers.either (\err -> Left err) (\stripped -> case stripped of
      Core.TermInject v0 ->
        let field = Core.injectionField v0
            fname = Core.fieldName field
            fterm = Core.fieldTerm field
            variantMap =
                    Maps.fromList [
                      (Core.Name "pre", (\input -> Eithers.map (\t -> Coders.TraversalOrderPre) (ExtractCore.decodeUnit cx input))),
                      (Core.Name "post", (\input -> Eithers.map (\t -> Coders.TraversalOrderPost) (ExtractCore.decodeUnit cx input)))]
        in (Maybes.maybe (Left (Errors.DecodingError (Strings.cat [
          "no such field ",
          (Core.unName fname),
          " in union"]))) (\f -> f fterm) (Maps.lookup fname variantMap))
      _ -> Left (Errors.DecodingError "expected union")) (ExtractCore.stripWithDecodingError cx raw)