Add errors for using the is and as keywords

- Add errors for using the `is` and `as` keywords because Udon does not currently expose the System.Type methods needed to implement them.
MerlinVR · Apr 10, 2020 · fc2f279 · fc2f279
1 parent 93b1ed0
commit fc2f279
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/Assets/UdonSharp/Editor/UdonSharpASTVisitor.cs b/Assets/UdonSharp/Editor/UdonSharpASTVisitor.cs
@@ -1553,6 +1553,12 @@ public override void VisitBinaryExpression(BinaryExpressionSyntax node)
         {
             UpdateSyntaxNode(node);
 
+            if (node.Kind() == SyntaxKind.IsExpression)
+                throw new System.NotSupportedException("The `is` keyword is not yet supported by UdonSharp since Udon does not expose what is necessary (https://vrchat.canny.io/vrchat-udon-closed-alpha-feedback/p/expose-systemtypeissubclassof-isinstanceoftype-issubclassof-and-basetype)");
+
+            if (node.Kind() == SyntaxKind.AsExpression)
+                throw new System.NotSupportedException("The `as` keyword is not yet supported by UdonSharp since Udon does not expose what is necessary (https://vrchat.canny.io/vrchat-udon-closed-alpha-feedback/p/expose-systemtypeissubclassof-isinstanceoftype-issubclassof-and-basetype)");
+
             if (node.Kind() == SyntaxKind.LogicalAndExpression || node.Kind() == SyntaxKind.LogicalOrExpression)
             {
                 HandleBinaryShortCircuitConditional(node);