From a9d6a8201132127798d79da20a44bd2b14457b5a Mon Sep 17 00:00:00 2001
From: Celestino Amoroso <celestino.amoroso@gmail.com>
Date: Mon, 6 May 2024 15:26:45 +0200
Subject: [PATCH] operand-func.go: improved error report when functions reveive
 less params than expected

---
 operand-func.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/operand-func.go b/operand-func.go
index afac065..1512cd3 100644
--- a/operand-func.go
+++ b/operand-func.go
@@ -25,7 +25,11 @@ func newFuncCallTerm(tk *Token, args []*term) *term {
 func checkFunctionCall(ctx ExprContext, name string, params []any) (err error) {
 	if info, exists := ctx.GetFuncInfo(name); exists {
 		if info.MinArgs() > len(params) {
-			err = fmt.Errorf("too few params -- expected %d, got %d", info.MinArgs(), len(params))
+			if info.MaxArgs() < 0 {
+				err = fmt.Errorf("too few params -- expected %d or more, got %d", info.MinArgs(), len(params))
+			} else {
+				err = fmt.Errorf("too few params -- expected %d, got %d", info.MinArgs(), len(params))
+			}
 		}
 		if info.MaxArgs() >= 0 && info.MaxArgs() < len(params) {
 			err = fmt.Errorf("too much params -- expected %d, got %d", info.MaxArgs(), len(params))