--- | A substate containing just the types
-type TypeState = State.State TypeMap
-
-type Builder = Either ([AST.Expr] -> VHDLSession AST.Expr) (Entity -> [CoreSyn.CoreBndr] -> VHDLSession AST.GenerateSm)
+-- A function that generates VHDL for a builtin function
+type BuiltinBuilder =
+ (Either CoreSyn.CoreBndr AST.VHDLName) -- ^ The destination signal and it's original type
+ -> CoreSyn.CoreBndr -- ^ The function called
+ -> [Either CoreSyn.CoreExpr AST.Expr] -- ^ The value arguments passed (excluding type and
+ -- dictionary arguments).
+ -> VHDLSession [AST.ConcSm] -- ^ The resulting concurrent statements.