1 files changed, 104 insertions, 0 deletions
diff --git a/lldb/examples/summaries/cocoa/NSNotification.py b/lldb/examples/summaries/cocoa/NSNotification.py
new file mode 100644
index 00000000000..6170110354c
--- /dev/null
+++ b/lldb/examples/summaries/cocoa/NSNotification.py
@@ -0,0 +1,104 @@
+# summary provider for class NSNotification
+import objc_runtime
+import metrics
+import CFString
+import lldb
+
+statistics = metrics.Metrics()
+statistics.add_metric('invalid_isa')
+statistics.add_metric('invalid_pointer')
+statistics.add_metric('unknown_class')
+statistics.add_metric('code_notrun')
+
+class NSConcreteNotification_SummaryProvider:
+	def adjust_for_architecture(self):
+		self.lp64 = (self.valobj.GetTarget().GetProcess().GetAddressByteSize() == 8)
+		self.is_little = (self.valobj.GetTarget().GetProcess().GetByteOrder() == lldb.eByteOrderLittle)
+		self.pointer_size = self.valobj.GetTarget().GetProcess().GetAddressByteSize()
+
+	def __init__(self, valobj):
+		self.valobj = valobj;
+		self.update();
+
+	def update(self):
+		self.adjust_for_architecture();
+		self.id_type = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID)
+		self.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong)
+
+	# skip the ISA and go to the name pointer
+	def offset(self):
+		if self.lp64:
+			return 8
+		else:
+			return 4
+
+	def name(self):
+		string_ptr = self.valobj.CreateChildAtOffset("name",
+							self.offset(),
+							self.id_type)
+		return CFString.CFString_SummaryProvider(string_ptr,None)
+
+
+class NSNotificationUnknown_SummaryProvider:
+	def adjust_for_architecture(self):
+		self.lp64 = (self.valobj.GetTarget().GetProcess().GetAddressByteSize() == 8)
+		self.is_little = (self.valobj.GetTarget().GetProcess().GetByteOrder() == lldb.eByteOrderLittle)
+		self.pointer_size = self.valobj.GetTarget().GetProcess().GetAddressByteSize()
+
+	def __init__(self, valobj):
+		self.valobj = valobj;
+		self.update()
+
+	def update(self):
+		self.adjust_for_architecture();
+		self.id_type = self.valobj.GetType().GetBasicType(lldb.eBasicTypeObjCID)
+
+	def name(self):
+		stream = lldb.SBStream()
+		self.valobj.GetExpressionPath(stream)
+		name_vo = self.valobj.CreateValueFromExpression("name","(NSString*)[" + stream.GetData() + " name]");
+		return CFString.CFString_SummaryProvider(name_vo,None)
+
+
+def GetSummary_Impl(valobj):
+	global statistics
+	class_data = objc_runtime.ObjCRuntime(valobj)
+	if class_data.is_valid() == False:
+		statistics.metric_hit('invalid_pointer',valobj)
+		wrapper = None
+		return
+	class_data = class_data.read_class_data()
+	if class_data.is_valid() == False:
+		statistics.metric_hit('invalid_isa',valobj)
+		wrapper = None
+		return
+	if class_data.is_kvo():
+		class_data = class_data.get_superclass()
+	if class_data.is_valid() == False:
+		statistics.metric_hit('invalid_isa',valobj)
+		wrapper = None
+		return
+	
+	name_string = class_data.class_name()
+	if name_string == 'NSConcreteNotification':
+		wrapper = NSConcreteNotification_SummaryProvider(valobj)
+		statistics.metric_hit('code_notrun',valobj)
+	else:
+		wrapper = NSNotificationUnknown_SummaryProvider(valobj)
+		statistics.metric_hit('unknown_class',str(valobj) + " seen as " + name_string)
+	return wrapper;
+
+def NSNotification_SummaryProvider (valobj,dict):
+	provider = GetSummary_Impl(valobj);
+	if provider != None:
+	    try:
+	        summary = provider.name();
+	    except:
+	        summary = None
+	    if summary == None:
+	        summary = 'no valid notification here'
+	    return str(summary)
+	return ''
+
+def __lldb_init_module(debugger,dict):
+	debugger.HandleCommand("type summary add -F NSNotification.NSNotification_SummaryProvider NSNotification")