lldb/examples/summaries/pysummary.py

   1 import lldb
   2
   3
   4 def pyobj_summary(value, unused):
   5     if value is None or value.IsValid() == False or value.GetValueAsUnsigned(0) == 0:
   6         return "<invalid>"
   7     refcnt = value.GetChildMemberWithName("ob_refcnt")
   8     expr = "(char*)PyString_AsString( (PyObject*)PyObject_Str( (PyObject*)0x%x) )" % (
   9         value.GetValueAsUnsigned(0)
  10     )
  11     expr_summary = value.target.EvaluateExpression(
  12         expr, lldb.SBExpressionOptions()
  13     ).GetSummary()
  14     refcnt_value = "rc = %d" % (refcnt.GetValueAsUnsigned(0))
  15     return "%s (%s)" % (expr_summary, refcnt_value)
  16
  17
  18 def __lldb_init_module(debugger, unused):
  19     debugger.HandleCommand(
  20         "type summary add PyObject --python-function pysummary.pyobj_summary"
  21     )
  22     debugger.HandleCommand(
  23         "type summary add lldb_private::PythonObject -s ${var.m_py_obj%S}"
  24     )
  25     debugger.HandleCommand(
  26         "type summary add lldb_private::PythonDictionary -s ${var.m_py_obj%S}"
  27     )
  28     debugger.HandleCommand(
  29         "type summary add lldb_private::PythonString -s ${var.m_py_obj%S}"
  30     )