""" LLDB Formatters for LLVM data types. Load into LLDB with 'command script import /path/to/lldbDataFormatters.py' """ def __lldb_init_module(debugger, internal_dict): debugger.HandleCommand('type category define -e llvm -l c++') debugger.HandleCommand('type synthetic add -w llvm ' '-l lldbDataFormatters.SmallVectorSynthProvider ' '-x "^llvm::SmallVectorImpl<.+>$"') debugger.HandleCommand('type synthetic add -w llvm ' '-l lldbDataFormatters.SmallVectorSynthProvider ' '-x "^llvm::SmallVector<.+,.+>$"') debugger.HandleCommand('type synthetic add -w llvm ' '-l lldbDataFormatters.ArrayRefSynthProvider ' '-x "^llvm::ArrayRef<.+>$"') debugger.HandleCommand('type summary add -w llvm ' '-F lldbDataFormatters.OptionalSummaryProvider ' '-x "^llvm::Optional<.+>$"') # Pretty printer for llvm::SmallVector/llvm::SmallVectorImpl class SmallVectorSynthProvider: def __init__(self, valobj, dict): self.valobj = valobj; self.update() # initialize this provider def num_children(self): begin = self.begin.GetValueAsUnsigned(0) end = self.end.GetValueAsUnsigned(0) return (end - begin)/self.type_size def get_child_index(self, name): try: return int(name.lstrip('[').rstrip(']')) except: return -1; def get_child_at_index(self, index): # Do bounds checking. if index < 0: return None if index >= self.num_children(): return None; offset = index * self.type_size return self.begin.CreateChildAtOffset('['+str(index)+']', offset, self.data_type) def update(self): self.begin = self.valobj.GetChildMemberWithName('BeginX') self.end = self.valobj.GetChildMemberWithName('EndX') the_type = self.valobj.GetType() # If this is a reference type we have to dereference it to get to the # template parameter. if the_type.IsReferenceType(): the_type = the_type.GetDereferencedType() self.data_type = the_type.GetTemplateArgumentType(0) self.type_size = self.data_type.GetByteSize() assert self.type_size != 0 class ArrayRefSynthProvider: """ Provider for llvm::ArrayRef """ def __init__(self, valobj, dict): self.valobj = valobj; self.update() # initialize this provider def num_children(self): return self.length def get_child_index(self, name): try: return int(name.lstrip('[').rstrip(']')) except: return -1; def get_child_at_index(self, index): if index < 0 or index >= self.num_children(): return None; offset = index * self.type_size return self.data.CreateChildAtOffset('[' + str(index) + ']', offset, self.data_type) def update(self): self.data = self.valobj.GetChildMemberWithName('Data') length_obj = self.valobj.GetChildMemberWithName('Length') self.length = length_obj.GetValueAsUnsigned(0) self.data_type = self.data.GetType().GetPointeeType() self.type_size = self.data_type.GetByteSize() assert self.type_size != 0 def OptionalSummaryProvider(valobj, internal_dict): if not valobj.GetChildMemberWithName('hasVal').GetValueAsUnsigned(0): return 'None' underlying_type = valobj.GetType().GetTemplateArgumentType(0) storage = valobj.GetChildMemberWithName('storage') return str(storage.Cast(underlying_type))