1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_FIELD_HELPER_H_
18#define ART_RUNTIME_FIELD_HELPER_H_
19
20#include "base/macros.h"
21#include "handle.h"
22#include "mirror/art_field.h"
23
24namespace art {
25
26class FieldHelper {
27 public:
28  explicit FieldHelper(Handle<mirror::ArtField> f) : field_(f) {}
29
30  void ChangeField(mirror::ArtField* new_f) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
31    DCHECK(new_f != nullptr);
32    field_.Assign(new_f);
33  }
34
35  mirror::ArtField* GetField() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
36    return field_.Get();
37  }
38
39  mirror::Class* GetType(bool resolve = true) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
40
41  // The returned const char* is only guaranteed to be valid for the lifetime of the FieldHelper.
42  // If you need it longer, copy it into a std::string.
43  const char* GetDeclaringClassDescriptor() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
44
45 private:
46  Handle<mirror::ArtField> field_;
47  std::string declaring_class_descriptor_;
48
49  DISALLOW_COPY_AND_ASSIGN(FieldHelper);
50};
51
52}  // namespace art
53
54#endif  // ART_RUNTIME_FIELD_HELPER_H_
55