xref: /llvm-project/lldb/examples/summaries/pysummary.py (revision fd35a92300a00edaf56ae94176317390677569a4)
1import lldb
2
3
4def pyobj_summary(value, unused):
5    if value is None or not value.IsValid() 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
18def __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    )
31