Further implement C backend.

There is a problem where I'm mixing up bits and bytes. I think I'll try
to resolve that using more type-level constraints.

1 files changed, 15 insertions, 4 deletions

diff --git a/src/Language/Fiddle/Compiler/Qualification.hs b/src/Language/Fiddle/Compiler/Qualification.hs
index e09725e..70378c3 100644
--- a/src/Language/Fiddle/Compiler/Qualification.hs
+++ b/src/Language/Fiddle/Compiler/Qualification.hs
@@ -45,14 +45,17 @@ type A = Commented SourceSpan
 
 type M = Compile GlobalState
 
-uniqueString :: M String
-uniqueString = do
+uniqueString :: String -> M String
+uniqueString prefix = do
   cnt <- gets uniqueCounter
   modify $ \g -> g {uniqueCounter = cnt + 1}
-  return $ "__anon" ++ show cnt
+  return $ "_" ++ prefix ++ show cnt
 
 uniqueIdentifier :: a -> M (Identifier F a)
-uniqueIdentifier a = (\s -> Identifier (Data.Text.pack s) a) <$> uniqueString
+uniqueIdentifier a = (\s -> Identifier (Data.Text.pack s) a) <$> uniqueString "ident"
+
+uniqueReservedIdentifier :: a -> M (Identifier F a)
+uniqueReservedIdentifier a = (\s -> Identifier (Data.Text.pack s) a) <$> uniqueString "reserved"
 
 instance CompilationStage Expanded where
   type StageAfter Expanded = Qualified
@@ -82,6 +85,14 @@ instance
   where
   convertInStage _ ann _ = guaranteeM (uniqueIdentifier ann)
 
+instance
+  StageConvertible
+    Expanded
+    (When False String)
+    (When True String)
+  where
+  convertInStage _ _ _ _ = Present <$> uniqueString "reserved"
+
 deriving instance AdvanceStage S ObjTypeBody
 
 deriving instance AdvanceStage S DeferredRegisterBody