New interface and implementation to model function parameters

operand-func.go

@@ -31,7 +31,8 @@ func checkFunctionCall(ctx ExprContext, name string, params []any) (err error) {
 			err = errTooMuchParams(info.MaxArgs(), len(params))
 		}
 		if err == nil && owner != ctx {
-			ctx.RegisterFunc(name, info.Functor(), info.MinArgs(), info.MaxArgs())
+			// ctx.RegisterFunc(name, info.Functor(), info.MinArgs(), info.MaxArgs())
+			ctx.RegisterFuncInfo(info)
 		}
 	} else {
 		err = fmt.Errorf("unknown function %s()", name)
@@ -85,7 +86,10 @@ func (functor *funcDefFunctor) Invoke(ctx ExprContext, name string, args []any)
 		if i < len(args) {
 			arg := args[i]
 			if functor, ok := arg.(Functor); ok {
-				ctx.RegisterFunc(p, functor, 0, -1)
+				// ctx.RegisterFunc(p, functor, 0, -1)
+				ctx.RegisterFunc2(p, functor, typeAny, []ExprFuncParam{
+					newFuncParam(paramValue),
+				})
 			} else {
 				ctx.UnsafeSetVar(p, arg)
 			}