[royale-compiler] 02/03: ArrayLikeUtil: fix null exception when dynamic access node is [] (empty)

[jo...@apache.org]

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joshtynjala pushed a commit to branch develop
in repository https://gitbox.apache.org/repos/asf/royale-compiler.git

commit dc82b3c5849633c198c633c3b02460c73c66d952
Author: Josh Tynjala <jo...@apache.org>
AuthorDate: Mon Dec 12 15:43:10 2022 -0800

    ArrayLikeUtil: fix null exception when dynamic access node is [] (empty)
---
 compiler/src/main/java/org/apache/royale/utils/ArrayLikeUtil.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/compiler/src/main/java/org/apache/royale/utils/ArrayLikeUtil.java b/compiler/src/main/java/org/apache/royale/utils/ArrayLikeUtil.java
index dce18747e..13f4459c6 100644
--- a/compiler/src/main/java/org/apache/royale/utils/ArrayLikeUtil.java
+++ b/compiler/src/main/java/org/apache/royale/utils/ArrayLikeUtil.java
@@ -281,8 +281,13 @@ public class ArrayLikeUtil
             return false;
         }
         boolean isCandidate = false;
+        IDefinition dynType = null;
+        IExpressionNode rightNode = dynNode.getRightOperandNode();
+        if (rightNode != null)
+        {
+            dynType = rightNode.resolveType(project);
+        }
         //first check to see if the access is numeric... if it is not then we consider that it is not a candidate
-        IDefinition dynType = dynNode.getRightOperandNode().resolveType(project);
         if (project.getBuiltinType(IASLanguageConstants.BuiltinType.NUMBER).equals(dynType)
                 || project.getBuiltinType(IASLanguageConstants.BuiltinType.UINT).equals(dynType)
                 || project.getBuiltinType(IASLanguageConstants.BuiltinType.INT).equals(dynType)