From 999e499ce54e7b8269fd1becd4e5a4f2f5801e0d Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Mon, 12 Jul 2021 09:29:52 +0100
Subject: [PATCH] Nasal Hash: add isNil wrapper

---
 simgear/nasal/cppbind/NasalHash.cxx | 6 ++++++
 simgear/nasal/cppbind/NasalHash.hxx | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/simgear/nasal/cppbind/NasalHash.cxx b/simgear/nasal/cppbind/NasalHash.cxx
index 71afefe0..1ad56d7d 100644
--- a/simgear/nasal/cppbind/NasalHash.cxx
+++ b/simgear/nasal/cppbind/NasalHash.cxx
@@ -130,4 +130,10 @@ namespace nasal
     return _keys;
   }
 
+  //----------------------------------------------------------------------------
+  bool Hash::isNil() const
+  {
+      return naIsNil(_hash);
+  }
+
 } // namespace nasal
diff --git a/simgear/nasal/cppbind/NasalHash.hxx b/simgear/nasal/cppbind/NasalHash.hxx
index 97c1e6cb..a9e6ead7 100644
--- a/simgear/nasal/cppbind/NasalHash.hxx
+++ b/simgear/nasal/cppbind/NasalHash.hxx
@@ -137,6 +137,8 @@ namespace nasal
        */
       int size() const;
 
+      bool isNil() const;
+
       /**
        * Get a list of all keys
        */