Logging for data formatters.

llvm-svn: 153878
diff --git a/lldb/examples/summaries/cocoa/CFBag.py b/lldb/examples/summaries/cocoa/CFBag.py
index 9347486..0f8ad20 100644
--- a/lldb/examples/summaries/cocoa/CFBag.py
+++ b/lldb/examples/summaries/cocoa/CFBag.py
@@ -10,6 +10,7 @@
 import ctypes
 import objc_runtime
 import metrics
+import Logger
 
 statistics = metrics.Metrics()
 statistics.add_metric('invalid_isa')
@@ -25,6 +26,7 @@
 		pass
 
 	def __init__(self, valobj, params):
+		logger = Logger.Logger()
 		self.valobj = valobj;
 		self.sys_params = params
 		if not(self.sys_params.types_cache.NSUInteger):
@@ -35,18 +37,21 @@
 		self.update();
 
 	def update(self):
+		logger = Logger.Logger()
 		self.adjust_for_architecture();
 
 	# 12 bytes on i386
 	# 20 bytes on x64
 	# most probably 2 pointers and 4 bytes of data
 	def offset(self):
+		logger = Logger.Logger()
 		if self.sys_params.is_64_bit:
 			return 20
 		else:
 			return 12
 
 	def length(self):
+		logger = Logger.Logger()
 		size = self.valobj.CreateChildAtOffset("count",
 							self.offset(),
 							self.sys_params.types_cache.NSUInteger)
@@ -58,14 +63,17 @@
 		pass
 
 	def __init__(self, valobj, params):
+		logger = Logger.Logger()
 		self.valobj = valobj;
 		self.sys_params = params
 		self.update();
 
 	def update(self):
+		logger = Logger.Logger()
 		self.adjust_for_architecture();
 
 	def length(self):
+		logger = Logger.Logger()
 		stream = lldb.SBStream()
 		self.valobj.GetExpressionPath(stream)
 		num_children_vo = self.valobj.CreateValueFromExpression("count","(int)CFBagGetCount(" + stream.GetData() + " )")
@@ -75,6 +83,7 @@
 
 
 def GetSummary_Impl(valobj):
+	logger = Logger.Logger()
 	global statistics
 	class_data,wrapper = objc_runtime.Utilities.prepare_class_detection(valobj,statistics)
 	if wrapper:
@@ -82,6 +91,9 @@
 	
 	name_string = class_data.class_name()
 	actual_name = name_string
+	
+	logger >> "name string got was " + str(name_string) + " but actual name is " + str(actual_name)
+	
 	if class_data.is_cftype():
 		# CFBag does not expose an actual NSWrapper type, so we have to check that this is
 		# an NSCFType and then check we are a pointer-to __CFBag
@@ -100,6 +112,7 @@
 	return wrapper;
 
 def CFBag_SummaryProvider (valobj,dict):
+	logger = Logger.Logger()
 	provider = GetSummary_Impl(valobj);
 	if provider != None:
 		if isinstance(provider,objc_runtime.SpecialSituation_Description):
@@ -108,6 +121,7 @@
 			summary = provider.length();
 		except:
 			summary = None
+		logger >> "summary got from provider: " + str(summary)
 		# for some reason, one needs to clear some bits for the count
 		# to be correct when using CF(Mutable)BagRef on x64
 		# the bit mask was derived through experimentation