From 16002ec0c82a59082f670f9364834764f627f835 Mon Sep 17 00:00:00 2001
From: Andrew Meadows <leviathan@lindenlab.com>
Date: Sat, 5 Oct 2024 15:25:48 +0200
Subject: add GameControl feature

---
 indra/llcommon/llsd.cpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'indra/llcommon/llsd.cpp')

diff --git a/indra/llcommon/llsd.cpp b/indra/llcommon/llsd.cpp
index ad2ce231fa..19ed6d9bd8 100644
--- a/indra/llcommon/llsd.cpp
+++ b/indra/llcommon/llsd.cpp
@@ -1043,6 +1043,31 @@ void LLSD::clear()                      { Impl::assignUndefined(impl); }
 
 LLSD::Type LLSD::type() const           { return safe(impl).type(); }
 
+bool LLSD::isEmpty() const
+{
+    switch (type())
+    {
+    case TypeUndefined:
+        return true; // Always empty
+    case TypeBinary:
+        return !asBoolean(); // Empty when default
+    case TypeInteger:
+        return !asInteger(); // Empty when default
+    case TypeReal:
+        return !asReal(); // Empty when default
+    case TypeString:
+    case TypeURI:
+        return asString().empty(); // Empty natively
+    case TypeArray:
+    case TypeMap:
+        return !size(); // Empty natively
+    default:;
+    }
+    // All other value types (TypeDate) don't have default values so can't be empty
+    return false;
+}
+
+
 // Scalar Constructors
 LLSD::LLSD(Boolean v) : impl(0)         { ALLOC_LLSD_OBJECT;    assign(v); }
 LLSD::LLSD(Integer v) : impl(0)         { ALLOC_LLSD_OBJECT;    assign(v); }
-- 
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