Use text for member access instead of Expr

src/Windows12/Ast.hs

@@ -60,7 +60,7 @@ data Expr
   | UnOp UnOp Expr
   | Call Expr [Expr]
   | Index Expr Expr
-  | Member Expr Expr
+  | Member Expr Text
   | Cast Type Expr
   | Sizeof Type
   | StructInit Text [(Text, Expr)]

src/Windows12/CodeGen.hs

@@ -108,7 +108,7 @@ codegenLVal (Id name) = do
     Nothing -> error $ "Variable " ++ show name ++ " not found"
 
 -- TODO support members of members
-codegenLVal (Member (Id sName) (Id field)) = do
+codegenLVal (Member (Id sName) field) = do
     ctx <- get
     case lookup sName (operands ctx) of
         Just ((Just (StructType op_type)), struct) -> do
@@ -202,7 +202,7 @@ codegenExpr (Call (Id f) args) = do
 codegenExpr (Index arr idx)  = undefined -- TODO arrays
 
 -- Get the address of the struct field and load it
-codegenExpr (Member (Id sVarName) (Id field)) = do
+codegenExpr (Member (Id sVarName) field) = do
     ctx <- get
     case lookup sVarName (operands ctx) of
         Just ((Just (StructType op_type)), struct) -> do

src/Windows12/Parser.hs

@@ -9,8 +9,14 @@ import Windows12.Lexer
 
 opTable :: [[Operator Parser Expr]]
 opTable =
-  [ [ InfixL $ Member <$ symbol ".",
-      InfixL $ (\l r -> Member (UnOp Deref l) r) <$ symbol "->"
+  [ [ Postfix $ do
+        _ <- symbol "."
+        field <- identifier
+        pure (\expr -> Member expr field),
+      Postfix $ do
+        _ <- symbol "->"
+        field <- identifier
+        pure (\expr -> Member (UnOp Deref expr) field)
     ],
     [ unary (UnOp Neg) "-",
       unary (UnOp Not) "!",