ignore harmless exceptions I can't fix

fyi, it's really hard to test this fix because the exception is not generally reproducable

1 files changed, 24 insertions, 0 deletions

diff --git a/src/cuchaz/enigma/ExceptionIgnorer.java b/src/cuchaz/enigma/ExceptionIgnorer.java
new file mode 100644
index 0000000..37c67da
--- /dev/null
+++ b/src/cuchaz/enigma/ExceptionIgnorer.java
@@ -0,0 +1,24 @@
+package cuchaz.enigma;
+
+public class ExceptionIgnorer {
+
+        public static boolean shouldIgnore(Throwable t) {
+                
+                // is this that pesky concurrent access bug in the highlight painter system?
+                // (ancient ui code is ancient)
+                if (t instanceof ArrayIndexOutOfBoundsException) {
+                        StackTraceElement[] stackTrace = t.getStackTrace();
+                        if (stackTrace.length > 1) {
+                        
+                                // does this stack frame match javax.swing.text.DefaultHighlighter.paint() ?
+                                StackTraceElement frame = stackTrace[1];
+                                if (frame.getClassName().equals("javax.swing.text.DefaultHighlighter") && frame.getMethodName().equals("paint")) {
+                                        return true;
+                                }
+                        }
+                }
+                
+                return false;
+        }
+        
+}