1 files changed, 124 insertions, 0 deletions
diff --git a/lldb/examples/summaries/cocoa/NSURL.py b/lldb/examples/summaries/cocoa/NSURL.py
new file mode 100644
index 00000000000..6c15b402213
--- /dev/null
+++ b/lldb/examples/summaries/cocoa/NSURL.py
@@ -0,0 +1,124 @@
+# summary provider for NSURL
+import lldb
+import ctypes
+import objc_runtime
+import metrics
+import CFString
+
+statistics = metrics.Metrics()
+statistics.add_metric('invalid_isa')
+statistics.add_metric('invalid_pointer')
+statistics.add_metric('unknown_class')
+statistics.add_metric('code_notrun')
+
+# despite the similary to synthetic children providers, these classes are not
+# trying to provide anything but a summary for an NSURL, so they need not
+# obey the interface specification for synthetic children providers
+class NSURLKnown_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)
+		if self.lp64:
+			self.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedLong)
+			self.pointer_size = 8
+		else:
+			self.NSUInteger = self.valobj.GetType().GetBasicType(lldb.eBasicTypeUnsignedInt)
+			self.pointer_size = 4
+		self.NSString = self.valobj.GetTarget().FindFirstType('NSString')
+		self.NSURL = self.valobj.GetTarget().FindFirstType('NSURL')
+
+	# one pointer is the ISA
+	# then there is one more pointer and 8 bytes of plain data
+	# (which are also present on a 32-bit system)
+	# plus another pointer, and then the real data
+	def offset(self):
+		if self.lp64:
+			return 24
+		else:
+			return 16
+
+	def url_text(self):
+		text = self.valobj.CreateChildAtOffset("text",
+							self.offset(),
+							self.NSString.GetPointerType())
+		base = self.valobj.CreateChildAtOffset("base",
+							self.offset()+self.pointer_size,
+							self.NSURL.GetPointerType())
+		my_string = CFString.CFString_SummaryProvider(text,None)
+		if base.GetValueAsUnsigned(0) != 0:
+			my_string = my_string + " (base path: " + NSURL_SummaryProvider(base,None) + ")"
+		return my_string
+
+
+class NSURLUnknown_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 url_text(self):
+		stream = lldb.SBStream()
+		self.valobj.GetExpressionPath(stream)
+		url_text_vo = self.valobj.CreateValueFromExpression("url","(NSString*)[" + stream.GetData() + " description]");
+		return CFString.CFString_SummaryProvider(url_text_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 == 'NSURL':
+		wrapper = NSURLKnown_SummaryProvider(valobj)
+		statistics.metric_hit('code_notrun',valobj)
+	else:
+		wrapper = NSURLUnknown_SummaryProvider(valobj)
+		statistics.metric_hit('unknown_class',str(valobj) + " seen as " + name_string)
+	return wrapper;
+
+def NSURL_SummaryProvider (valobj,dict):
+	provider = GetSummary_Impl(valobj);
+	if provider != None:
+	    try:
+	        summary = provider.url_text();
+	    except:
+	        summary = None
+	    if summary == None or summary == '':
+	        summary = 'no valid NSURL here'
+	    return summary
+	return ''
+
+def __lldb_init_module(debugger,dict):
+	debugger.HandleCommand("type summary add -F NSURL.NSURL_SummaryProvider NSURL CFURLRef")