examples/summaries/synth.py

   1 import lldb
   2
   3
   4 class PythonObjectSyntheticChildProvider(object):
   5
   6     def __init__(self, value, internal_dict):
   7         self.value = value
   8         self.values = self.make_children()
   9         self.built_values = {}
  10         self.bo = self.value.target.byte_order
  11         self.ps = self.value.target.addr_size
  12
  13     def make_children(self):
  14         pass
  15
  16     def num_children(self):
  17         return len(self.values)
  18
  19     def get_child_index(self, name):
  20         i = 0
  21         for N, value in self.values:
  22             if N == name:
  23                 return i
  24             i += 1
  25         return None
  26
  27     def update(self):
  28         pass
  29
  30     def has_children(self):
  31         return len(self.values) > 0
  32
  33     def gen_child(self, name, value):
  34         data = None
  35         type = None
  36         if isinstance(value, int):
  37             data = lldb.SBData.CreateDataFromUInt32Array(
  38                 self.bo, self.ps, [value])
  39             type = self.value.target.GetBasicType(lldb.eBasicTypeInt)
  40         elif isinstance(value, long):
  41             data = lldb.SBData.CreateDataFromUInt64Array(
  42                 self.bo, self.ps, [value])
  43             type = self.value.target.GetBasicType(lldb.eBasicTypeLong)
  44         elif isinstance(value, float):
  45             data = lldb.SBData.CreateDataFromDoubleArray(
  46                 self.bo, self.ps, [value])
  47             type = self.value.target.GetBasicType(lldb.eBasicTypeDouble)
  48         elif isinstance(value, str):
  49             data = lldb.SBData.CreateDataFromCString(self.bo, self.ps, value)
  50             type = self.value.target.GetBasicType(
  51                 lldb.eBasicTypeChar).GetArrayType(
  52                 len(value))
  53         if (data is not None) and (type is not None):
  54             return self.value.CreateValueFromData(name, data, type)
  55         return None
  56
  57     def get_child_at_index(self, index):
  58         if index in self.built_values:
  59             return self.built_values[index]
  60
  61         bv = None
  62
  63         name, value = self.values[index]
  64         bv = self.gen_child(name, value)
  65         self.built_values[index] = bv
  66         return bv