method_helper-inl.h revision cb6b0f31ede2275e79e6199ec391147585a37a2a 
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_METHOD_HELPER_INL_H_
18#define ART_RUNTIME_METHOD_HELPER_INL_H_
19
20#include "method_helper.h"
21
22#include "class_linker.h"
23#include "mirror/object_array.h"
24#include "runtime.h"
25#include "thread-inl.h"
26
27namespace art {
28
29inline bool MethodHelper::HasSameNameAndSignature(MethodHelper* other) {
30  const DexFile* dex_file = method_->GetDexFile();
31  const DexFile::MethodId& mid = dex_file->GetMethodId(GetMethod()->GetDexMethodIndex());
32  if (method_->GetDexCache() == other->method_->GetDexCache()) {
33    const DexFile::MethodId& other_mid =
34        dex_file->GetMethodId(other->GetMethod()->GetDexMethodIndex());
35    return mid.name_idx_ == other_mid.name_idx_ && mid.proto_idx_ == other_mid.proto_idx_;
36  }
37  const DexFile* other_dex_file = other->method_->GetDexFile();
38  const DexFile::MethodId& other_mid =
39      other_dex_file->GetMethodId(other->GetMethod()->GetDexMethodIndex());
40  if (!DexFileStringEquals(dex_file, mid.name_idx_, other_dex_file, other_mid.name_idx_)) {
41    return false;  // Name mismatch.
42  }
43  return dex_file->GetMethodSignature(mid) == other_dex_file->GetMethodSignature(other_mid);
44}
45
46inline mirror::Class* MethodHelper::GetClassFromTypeIdx(uint16_t type_idx, bool resolve) {
47  mirror::ArtMethod* method = GetMethod();
48  mirror::Class* type = method->GetDexCacheResolvedType(type_idx);
49  if (type == nullptr && resolve) {
50    type = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method);
51    CHECK(type != nullptr || Thread::Current()->IsExceptionPending());
52  }
53  return type;
54}
55
56inline mirror::Class* MethodHelper::GetReturnType(bool resolve) {
57  mirror::ArtMethod* method = GetMethod();
58  const DexFile* dex_file = method->GetDexFile();
59  const DexFile::MethodId& method_id = dex_file->GetMethodId(method->GetDexMethodIndex());
60  const DexFile::ProtoId& proto_id = dex_file->GetMethodPrototype(method_id);
61  uint16_t return_type_idx = proto_id.return_type_idx_;
62  return GetClassFromTypeIdx(return_type_idx, resolve);
63}
64
65inline mirror::String* MethodHelper::ResolveString(uint32_t string_idx) {
66  mirror::ArtMethod* method = GetMethod();
67  mirror::String* s = method->GetDexCacheStrings()->Get(string_idx);
68  if (UNLIKELY(s == nullptr)) {
69    StackHandleScope<1> hs(Thread::Current());
70    Handle<mirror::DexCache> dex_cache(hs.NewHandle(method->GetDexCache()));
71    s = Runtime::Current()->GetClassLinker()->ResolveString(*method->GetDexFile(), string_idx,
72                                                            dex_cache);
73  }
74  return s;
75}
76
77}  // namespace art
78
79#endif  // ART_RUNTIME_METHOD_HELPER_INL_H_
80