WIP custom derivatives

1 files changed, 17 insertions, 0 deletions

diff --git a/src/AST/Pretty.hs b/src/AST/Pretty.hs
index 76424fe..bac267d 100644
--- a/src/AST/Pretty.hs
+++ b/src/AST/Pretty.hs
@@ -14,7 +14,9 @@ import Data.Functor.Const
 
 import AST
 import AST.Count
+import CHAD.Types
 import Data
+import ForwardAD.DualNumbers.Types
 
 
 type SVal = SList (Const String)
@@ -175,6 +177,21 @@ ppExpr' d val = \case
                 (Prefix, s) -> s
     return $ showParen (d > 10) $ showString (ops ++ " ") . e'
 
+  ECustom _ t1 t2 a b c e1 e2 -> do
+    pn1 <- genNameIfUsedIn t1 (IS IZ) a
+    pn2 <- genNameIfUsedIn t2 IZ a
+    fn1 <- genNameIfUsedIn t1 (IS IZ) b
+    fn2 <- genNameIfUsedIn (dn t2) IZ b
+    rn1 <- genNameIfUsedIn (d1 t1) (IS (IS IZ)) c
+    rn2 <- genNameIfUsedIn (d1 t2) (IS IZ) c
+    rn3 <- genNameIfUsedIn' "d" (d2 (typeOf a)) IZ c
+    a' <- ppExpr' 11 (Const pn2 `SCons` Const pn1 `SCons` SNil) a
+    b' <- ppExpr' 11 (Const fn2 `SCons` Const fn1 `SCons` SNil) b
+    c' <- ppExpr' 11 (Const rn3 `SCons` Const rn2 `SCons` Const rn1 `SCons` SNil) c
+    e1' <- ppExpr' 11 val e1
+    e2' <- ppExpr' 11 val e2
+    return $ showParen (d > 10) $ showString "custom " . a' . showString " " . b' . showString " " . c' . showString " " . e1' . showString " " . e2'
+
   EWith e1 e2 -> do
     e1' <- ppExpr' 11 val e1
     name <- genNameIfUsedIn' "ac" (STAccum (typeOf e1)) IZ e2