blob: 2a1a03b9a30bc35f0a360ce18131815f061f3300 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include "values.h"
#define true true
base::ListValue* ReturnsRawPtr() {
return nullptr;
}
std::unique_ptr<base::Value> ReturnsUniquePtr() {
return nullptr;
}
// The joy of raw pointers.
void DoesItTakeOwnership(base::Value*) {}
struct Thing {
std::unique_ptr<base::Value> ToValue() { return nullptr; }
};
void F() {
base::ListValue list;
list.Append(new base::FundamentalValue(1 == 0));
list.Append(new base::FundamentalValue(true));
list.Append(new base::FundamentalValue(static_cast<unsigned char>(1.0)));
list.Append(new base::FundamentalValue(double{3}));
list.Append(new base::StringValue("abc"));
list.Append(ReturnsUniquePtr().release());
Thing thing;
list.Append(thing.ToValue().release());
std::unique_ptr<base::Value> unique_ptr_var;
list.Append(unique_ptr_var.release());
}
void G(base::Value* input) {
base::ListValue list;
base::ListValue* local = new base::ListValue();
// Not rewritten, since it often makes more sense to change the function
// prototype.
local->Append(input);
// Should be rewritten: it will only be moved after it's no longer referenced.
list.Append(local);
// Not rewritten, since it would be used after it's moved. In theory, we could
// automatically handle this too, but the risk of accidentally breaking
// something is much higher.
base::ListValue* clever_list = new base::ListValue;
list.Append(clever_list);
clever_list->AppendInteger(2);
// Not rewritten, since it often makes more sense to change the function
// prototype.
base::Value* returned_value = ReturnsRawPtr();
list.Append(returned_value);
// Should be rewritten. The reassignment should be transformed into
// .reset().
base::ListValue* reused_list = new base::ListValue;
reused_list->AppendInteger(1);
list.Append(reused_list);
reused_list = new base::ListValue;
reused_list->AppendInteger(3);
list.Append(reused_list);
// This shouldn't be rewritten, since the reassignment is the return
// value of a function.
base::ListValue* reused_list_2 = new base::ListValue;
reused_list_2->AppendInteger(4);
list.Append(reused_list_2);
reused_list_2 = ReturnsRawPtr();
reused_list_2->AppendInteger(5);
list.Append(reused_list_2);
// auto should be expanded to a std::unique_ptr containing the deduced type.
auto* auto_list = new base::ListValue;
auto_list->AppendInteger(6);
list.Append(auto_list);
auto auto_list_2 = new base::ListValue;
auto_list_2->AppendInteger(7);
list.Append(auto_list_2);
// Shouldn't be rewritten: a raw pointer is passed to a function which may or
// may not take ownership.
base::ListValue* maybe_owned_list = new base::ListValue;
DoesItTakeOwnership(maybe_owned_list);
list.Append(maybe_owned_list);
// Should be rewritten, even though it doesn't have an initializer.
base::ListValue* list_with_no_initializer;
list_with_no_initializer = new base::ListValue;
list.Append(list_with_no_initializer);
// Make sure C++98 style initialization is correctly handled.
base::ListValue* cxx98_list(new base::ListValue);
list.Append(cxx98_list);
// C++11 style syntax currently causes the tool to bail out: this is banned in
// Chromium style anyway.
base::ListValue* cxx11_list{new base::ListValue};
list.Append(cxx11_list);
}
|
