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'''
Break on Objective-C 's method using its address'
'''
import shlex
import lldb
import re
def breakonmethod(debugger, command, exe_ctx,result, internal_dict):
args=shlex.split(command)
Class=args[0]
Method=args[1]
ClassMethod = lldb.SBCommandReturnObject()
CMCommand='expr -- (IMP)method_getImplementation((Method)class_getClassMethod((Class)objc_getClass("{0}"),@selector({1})));'.format(Class,Method)
IMCommand='expr -- (IMP)method_getImplementation((Method)class_getInstanceMethod((Class)objc_getClass("{0}"),@selector({1})));'.format(Class,Method)
debugger.GetCommandInterpreter().HandleCommand(CMCommand, ClassMethod)
InstanceMethod =lldb.SBCommandReturnObject()
debugger.GetCommandInterpreter().HandleCommand(IMCommand,InstanceMethod)
CMObj=ClassMethod.GetOutput()
IMObj=InstanceMethod.GetOutput()
CMObj=re.search(r'0x([a-zA-Z0-9]|x)*', CMObj).group(0)
IMObj=re.search(r'0x([a-zA-Z0-9]|x)*', IMObj).group(0)
CMObj=int(CMObj, 16)
IMObj=int(IMObj, 16)
ADDR=max(CMObj,IMObj)
debugger.HandleCommand("breakpoint set -a %i"%ADDR)
def __lldb_init_module (debugger, dict):
#Avoid Name Collision
debugger.HandleCommand('command script add -f BreakMessage.breakonmethod bom')
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