coreclr.py

import lldb
import ctypes

class Array_SynthProvider:

    def __init__(self, valobj, dict):
        self.valobj = valobj

    def num_children(self):
        return self.num_components.GetValueAsUnsigned(0)

    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:
            return None
        if index >= self.num_children():
            return None
        try:
            return self.data.CreateChildAtOffset('[' + str(index) + ']', index * self.data_size, self.data_type)
        except:
            return None

    def update(self):
        self.num_components = self.valobj.GetChildMemberWithName('m_NumComponents')
        self.data = self.valobj.GetChildMemberWithName('m_Data')
        self.data_type = self.data.GetType().GetArrayElementType()
        self.data_size = self.data_type.GetByteSize()

    def has_children(self):
        return True

def String_SummaryProvider(valobj, unused):
    length = valobj.GetChildMemberWithName('m_stringLength').GetValueAsUnsigned(0)
    data = valobj.GetChildMemberWithName('m_firstChar').GetPointeeData(0, length)
    error = lldb.SBError()
    raw = data.ReadRawData(error, 0, 2 * length)
    return '(System.Char[%d] *) "%s"' % (length, raw.decode('utf-16'))

def __lldb_init_module(dbg, dict):
    dbg.HandleCommand('type category define CoreCLR')
    dbg.HandleCommand('type synthetic add -w CoreCLR -l coreclr.Array_SynthProvider -x "\[,*\]$"')
    dbg.HandleCommand('type summary add -w CoreCLR -F coreclr.String_SummaryProvider -e -x "^System\.String$"')
    dbg.HandleCommand('type category enable CoreCLR')