From 66652ab05e6d540c10c482779407b6cb657f548d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mateusz=20Go=C5=9Blinowski?= <mateusz.g@mlabs.city>
Date: Fri, 20 Sep 2024 23:51:31 +0200
Subject: [PATCH] Introduce superclasses for IsXXXBasedEra classes

---
 cardano-api/internal/Cardano/Api/Eon/AllegraEraOnwards.hs | 2 +-
 cardano-api/internal/Cardano/Api/Eon/AlonzoEraOnwards.hs  | 3 ++-
 cardano-api/internal/Cardano/Api/Eon/BabbageEraOnwards.hs | 3 ++-
 cardano-api/internal/Cardano/Api/Eon/ConwayEraOnwards.hs  | 2 +-
 cardano-api/internal/Cardano/Api/Eon/MaryEraOnwards.hs    | 3 ++-
 5 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/cardano-api/internal/Cardano/Api/Eon/AllegraEraOnwards.hs b/cardano-api/internal/Cardano/Api/Eon/AllegraEraOnwards.hs
index e7adbc097..1bc8c8085 100644
--- a/cardano-api/internal/Cardano/Api/Eon/AllegraEraOnwards.hs
+++ b/cardano-api/internal/Cardano/Api/Eon/AllegraEraOnwards.hs
@@ -111,7 +111,7 @@ allegraEraOnwardsToShelleyBasedEra = \case
   AllegraEraOnwardsBabbage -> ShelleyBasedEraBabbage
   AllegraEraOnwardsConway -> ShelleyBasedEraConway
 
-class IsAllegraBasedEra era where
+class IsShelleyBasedEra era => IsAllegraBasedEra era where
   allegraBasedEra :: AllegraEraOnwards era
 
 instance IsAllegraBasedEra AllegraEra where
diff --git a/cardano-api/internal/Cardano/Api/Eon/AlonzoEraOnwards.hs b/cardano-api/internal/Cardano/Api/Eon/AlonzoEraOnwards.hs
index 150f9a6ca..b4997b90e 100644
--- a/cardano-api/internal/Cardano/Api/Eon/AlonzoEraOnwards.hs
+++ b/cardano-api/internal/Cardano/Api/Eon/AlonzoEraOnwards.hs
@@ -17,6 +17,7 @@ module Cardano.Api.Eon.AlonzoEraOnwards
   )
 where
 
+import           Cardano.Api.Eon.MaryEraOnwards
 import           Cardano.Api.Eon.ShelleyBasedEra
 import           Cardano.Api.Eras.Core
 import           Cardano.Api.Modes
@@ -119,7 +120,7 @@ alonzoEraOnwardsToShelleyBasedEra = \case
   AlonzoEraOnwardsBabbage -> ShelleyBasedEraBabbage
   AlonzoEraOnwardsConway -> ShelleyBasedEraConway
 
-class IsAlonzoBasedEra era where
+class IsMaryBasedEra era => IsAlonzoBasedEra era where
   alonzoBasedEra :: AlonzoEraOnwards era
 
 instance IsAlonzoBasedEra AlonzoEra where
diff --git a/cardano-api/internal/Cardano/Api/Eon/BabbageEraOnwards.hs b/cardano-api/internal/Cardano/Api/Eon/BabbageEraOnwards.hs
index 979e144f1..32fe98c4b 100644
--- a/cardano-api/internal/Cardano/Api/Eon/BabbageEraOnwards.hs
+++ b/cardano-api/internal/Cardano/Api/Eon/BabbageEraOnwards.hs
@@ -17,6 +17,7 @@ module Cardano.Api.Eon.BabbageEraOnwards
   )
 where
 
+import           Cardano.Api.Eon.AlonzoEraOnwards
 import           Cardano.Api.Eon.ShelleyBasedEra
 import           Cardano.Api.Eras.Core
 import           Cardano.Api.Modes
@@ -113,7 +114,7 @@ babbageEraOnwardsToShelleyBasedEra = \case
   BabbageEraOnwardsBabbage -> ShelleyBasedEraBabbage
   BabbageEraOnwardsConway -> ShelleyBasedEraConway
 
-class IsBabbageBasedEra era where
+class IsAlonzoBasedEra era => IsBabbageBasedEra era where
   babbageBasedEra :: BabbageEraOnwards era
 
 instance IsBabbageBasedEra BabbageEra where
diff --git a/cardano-api/internal/Cardano/Api/Eon/ConwayEraOnwards.hs b/cardano-api/internal/Cardano/Api/Eon/ConwayEraOnwards.hs
index d991fdfbd..f8d521092 100644
--- a/cardano-api/internal/Cardano/Api/Eon/ConwayEraOnwards.hs
+++ b/cardano-api/internal/Cardano/Api/Eon/ConwayEraOnwards.hs
@@ -120,7 +120,7 @@ conwayEraOnwardsToBabbageEraOnwards :: ConwayEraOnwards era -> BabbageEraOnwards
 conwayEraOnwardsToBabbageEraOnwards = \case
   ConwayEraOnwardsConway -> BabbageEraOnwardsConway
 
-class IsConwayBasedEra era where
+class IsBabbageBasedEra era => IsConwayBasedEra era where
   conwayBasedEra :: ConwayEraOnwards era
 
 instance IsConwayBasedEra ConwayEra where
diff --git a/cardano-api/internal/Cardano/Api/Eon/MaryEraOnwards.hs b/cardano-api/internal/Cardano/Api/Eon/MaryEraOnwards.hs
index 3f5984730..fd4f1ab85 100644
--- a/cardano-api/internal/Cardano/Api/Eon/MaryEraOnwards.hs
+++ b/cardano-api/internal/Cardano/Api/Eon/MaryEraOnwards.hs
@@ -17,6 +17,7 @@ module Cardano.Api.Eon.MaryEraOnwards
   )
 where
 
+import           Cardano.Api.Eon.AllegraEraOnwards
 import           Cardano.Api.Eon.ShelleyBasedEra
 import           Cardano.Api.Eras.Core
 import           Cardano.Api.Modes
@@ -111,7 +112,7 @@ maryEraOnwardsToShelleyBasedEra = \case
   MaryEraOnwardsBabbage -> ShelleyBasedEraBabbage
   MaryEraOnwardsConway -> ShelleyBasedEraConway
 
-class IsMaryBasedEra era where
+class IsAllegraBasedEra era => IsMaryBasedEra era where
   maryBasedEra :: MaryEraOnwards era
 
 instance IsMaryBasedEra MaryEra where