Allow custom handling of python Dumper warnings/exceptions

Change-Id: I04108a09c317675d597bb6d0d58331c70ce02fb9
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

share/qtcreator/debugger/dumper.py

@@ -152,27 +152,18 @@ class ReportItem:
 
 
 def warn(message):
-    print('bridgemessage={msg="%s"},' % message.replace('"', '$').encode('latin1'))
+    DumperBase.warn(message)
 
 def xwarn(message):
-    print('bridgemessage={msg="%s"},' % message.replace('"', '$').encode('latin1'))
+    warn(message)
     import traceback
     traceback.print_stack()
 
-
 def error(message):
     raise RuntimeError(message)
 
-
 def showException(msg, exType, exValue, exTraceback):
-    warn('**** CAUGHT EXCEPTION: %s ****' % msg)
-    try:
-        import traceback
-        for line in traceback.format_exception(exType, exValue, exTraceback):
-            warn('%s' % line)
-    except:
-        pass
-
+    DumperBase.showException(msg, exType, exValue, exTraceback)
 
 class Children:
     def __init__(self, d, numChild = 1, childType = None, childNumChild = None,
@@ -248,6 +239,20 @@ class UnnamedSubItem(SubItem):
         self.name = None
 
 class DumperBase:
+    @staticmethod
+    def warn(message):
+        print('bridgemessage={msg="%s"},' % message.replace('"', '$').encode('latin1'))
+
+    @staticmethod
+    def showException(msg, exType, exValue, exTraceback):
+        warn('**** CAUGHT EXCEPTION: %s ****' % msg)
+        try:
+            import traceback
+            for line in traceback.format_exception(exType, exValue, exTraceback):
+                warn('%s' % line)
+        except:
+            pass
+
     def __init__(self):
         self.isCdb = False
         self.isGdb = False