summaryrefslogtreecommitdiffstats
path: root/js/src/builtin/intl/ScopedICUObject.h
blob: 557a7e4bd637385aef7044e2b74528e18cce6171 (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
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: set ts=8 sts=2 et sw=2 tw=80:
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef builtin_intl_ScopedICUObject_h
#define builtin_intl_ScopedICUObject_h

/*
 * A simple RAII class to assure ICU objects are automatically deallocated at
 * scope end.  Unfortunately, ICU's C++ API is uniformly unstable, so we can't
 * use its smart pointers for this.
 */

namespace js {

template <typename T, void(Delete)(T*)>
class ScopedICUObject {
  T* ptr_;

 public:
  explicit ScopedICUObject(T* ptr) : ptr_(ptr) {}

  ~ScopedICUObject() {
    if (ptr_) {
      Delete(ptr_);
    }
  }

  // In cases where an object should be deleted on abnormal exits,
  // but returned to the caller if everything goes well, call forget()
  // to transfer the object just before returning.
  T* forget() {
    T* tmp = ptr_;
    ptr_ = nullptr;
    return tmp;
  }
};

}  // namespace js

#endif /* builtin_intl_ScopedICUObject_h */