1import lldb
2
3
4class 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
67