This patch provides a set of formatters for most of the commonly used Cocoa classes.

The formatter for NSString is an improved version of the one previously shipped as an example, the others are new in design and implementation.
A more robust and OO-compliant Objective-C runtime wrapper is provided for runtime versions 1 and 2 on 32 and 64 bit.
The formatters are contained in a category named "AppKit", which is not enabled at startup.

llvm-svn: 151300

1 files changed, 109 insertions, 0 deletions

diff --git a/lldb/examples/summaries/cocoa/NSMachPort.py b/lldb/examples/summaries/cocoa/NSMachPort.py
new file mode 100644
index 00000000000..ca714bc38ae
--- /dev/null
+++ b/lldb/examples/summaries/cocoa/NSMachPort.py
@@ -0,0 +1,109 @@
+# summary provider for NSData
+import lldb
+import ctypes
+import objc_runtime
+import metrics
+
+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 the port number of an NSMachPort, so they need not
+# obey the interface specification for synthetic children providers
+class NSMachPortKnown_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)
+
+	# one pointer is the ISA
+	# then we have one other internal pointer, plus
+	# 4 bytes worth of flags. hence, these values
+	def offset(self):
+		if self.lp64:
+			return 20
+		else:
+			return 12
+
+	def port(self):
+		vport = self.valobj.CreateChildAtOffset("port",
+							self.offset(),
+							self.NSUInteger)
+		return vport.GetValueAsUnsigned(0)
+
+
+class NSMachPortUnknown_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 port(self):
+		stream = lldb.SBStream()
+		self.valobj.GetExpressionPath(stream)
+		num_children_vo = self.valobj.CreateValueFromExpression("port","(int)[" + stream.GetData() + " machPort]");
+		return num_children_vo.GetValueAsUnsigned(0)
+
+
+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 == 'NSMachPort':
+		wrapper = NSMachPortKnown_SummaryProvider(valobj)
+		statistics.metric_hit('code_notrun',valobj)
+	else:
+		wrapper = NSMachPortUnknown_SummaryProvider(valobj)
+		statistics.metric_hit('unknown_class',str(valobj) + " seen as " + name_string)
+	return wrapper;
+
+def NSMachPort_SummaryProvider (valobj,dict):
+	provider = GetSummary_Impl(valobj);
+	if provider != None:
+	    try:
+	        summary = provider.port();
+	    except:
+	        summary = None
+	    if summary == None:
+	        summary = 'no valid mach port here'
+	    return 'mach port: ' + str(summary)
+	return ''
+
+def __lldb_init_module(debugger,dict):
+	debugger.HandleCommand("type summary add -F NSMachPort.NSMachPort_SummaryProvider NSMachPort")