From 7ef0ad4712cc93f71cfb0784880b8d95fdb52f10 Mon Sep 17 00:00:00 2001
From: knry0329 <yusuke.kanary@gmail.com>
Date: Sun, 26 Feb 2023 12:54:46 +0900
Subject: [PATCH] Check for required fields while parsing the schema

---
 internal/exec/packer/packer.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/internal/exec/packer/packer.go b/internal/exec/packer/packer.go
index ef9e0f98..5a3eafa8 100644
--- a/internal/exec/packer/packer.go
+++ b/internal/exec/packer/packer.go
@@ -199,6 +199,12 @@ func (b *Builder) MakeStructPacker(values []*ast.InputValueDefinition, typ refle
 		if sf.PkgPath != "" {
 			return nil, fmt.Errorf("field %q must be exported", sf.Name)
 		}
+		if _, ok := v.Type.(*ast.NonNull); ok {
+			if sf.Type.Kind() == reflect.Ptr {
+				return nil, fmt.Errorf("field %q must be a non-pointer since the parameter is required", sf.Name)
+			}
+		}
+
 		fe.index = sf.Index
 
 		ft := v.Type