Fixed crash when binding wasn't set

src/Comet.SourceGenerator/CometViewSourceGenerator.cs

@@ -125,37 +125,37 @@ namespace {{NameSpace}} {
 		static CometViewSourceGenerator()
 		{
 			var interfacePropertyEnvironmentMustache = @"
-                {{{Type}}} {{FullName}} {
-                        get => this.GetEnvironment<{{{CleanType}}}>(""{{Name}}"") ?? {{DefaultValue}};
-                        set => this.SetEnvironment(""{{Name}}"", value);
-                }
+				{{{Type}}} {{FullName}} {
+					get => this.GetEnvironment<{{{CleanType}}}>(""{{Name}}"") ?? {{DefaultValue}};
+					set => this.SetEnvironment(""{{Name}}"", value);
+				}
 ";
 			var interfacePropertySetOnlyEnvironmentMustache = @"
-                {{{Type}}} {{FullName}} {
-                        set => this.SetEnvironment(""{{Name}}"", value);
-                }
+				{{{Type}}} {{FullName}} {
+					set => this.SetEnvironment(""{{Name}}"", value);
+				}
 ";
 
 			var interfacePropertyGetOnlyEnvironmentMustache = @"
-                {{{Type}}} {{FullName}} => this.GetEnvironment<{{{CleanType}}}>(""{{Name}}"") ?? {{DefaultValue}};
+				{{{Type}}} {{FullName}} => this.GetEnvironment<{{{CleanType}}}>(""{{Name}}"") ?? {{DefaultValue}};
 ";
 
 			var interfacePropertyMustache = @"
-                {{{Type}}} {{FullName}} {
-                        get => {{Name}}?.CurrentValue ?? {{DefaultValue}};
-                        set => {{Name}}.Set(value);
-                }
+				{{{Type}}} {{FullName}} {
+					get => {{Name}}?.CurrentValue ?? {{DefaultValue}};
+					set => {{Name}}?.Set(value);
+				}
 ";
 
 			var interfacePropertyGetOnlyMustache = @"
-                {{{Type}}} {{FullName}} => {{Name}}?.CurrentValue ?? {{DefaultValue}};
+				{{{Type}}} {{FullName}} => {{Name}}?.CurrentValue ?? {{DefaultValue}};
 ";
 
 
 			var interfacePropertySetOnlyMustache = @"
 				{{{Type}}} {{FullName}} {
-                        set => {{Name}}.Set(value);
-                }
+					set => {{Name}}?.Set(value);
+				}
 ";
 			var interfacePropertyMethodEnvironmentMustache = @"
 
@@ -163,7 +163,7 @@ namespace {{NameSpace}} {
 ";
 
 			var interfacePropertyMethodMustache = @"
-                void {{FullName}} ({{{ActionsParameters}}}) => {{Name}}.CurrentValue?.Invoke({{{ActionsInvokeParameters}}});
+				void {{FullName}} ({{{ActionsParameters}}}) => {{Name}}.CurrentValue?.Invoke({{{ActionsInvokeParameters}}});
 ";
 
 			interfacePropertyDictionary = new Dictionary<(bool HasGet, bool HasSet), (string FromEnvironment, string FromProperty)>

src/Comet/Helpers/DatabindingExtensions.cs

@@ -17,7 +17,7 @@ namespace Comet
 		public static void SetBindingValue<T>(this View view, ref Binding<T> currentValue, Binding<T> newValue, [CallerMemberName] string propertyName = "")
 		{
 			currentValue = newValue ?? new Binding<T>();
-			newValue?.BindToProperty(view, propertyName);
+			currentValue?.BindToProperty(view, propertyName);
 		}
 
 		//public static void SetValue<T>(this State state, ref T currentValue, T newValue, View view, [CallerMemberName] string propertyName = "")