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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "method_helper.h"
#include "class_linker.h"
#include "dex_file-inl.h"
#include "handle_scope-inl.h"
#include "mirror/art_method-inl.h"
#include "mirror/dex_cache.h"
#include "runtime.h"
namespace art {
mirror::String* MethodHelper::GetNameAsString(Thread* self) {
const DexFile* dex_file = method_->GetDexFile();
mirror::ArtMethod* method = method_->GetInterfaceMethodIfProxy();
uint32_t dex_method_idx = method->GetDexMethodIndex();
const DexFile::MethodId& method_id = dex_file->GetMethodId(dex_method_idx);
StackHandleScope<1> hs(self);
Handle<mirror::DexCache> dex_cache(hs.NewHandle(method->GetDexCache()));
return Runtime::Current()->GetClassLinker()->ResolveString(*dex_file, method_id.name_idx_,
dex_cache);
}
bool MethodHelper::HasSameNameAndSignature(MethodHelper* other) {
const DexFile* dex_file = method_->GetDexFile();
const DexFile::MethodId& mid = dex_file->GetMethodId(GetMethod()->GetDexMethodIndex());
if (method_->GetDexCache() == other->method_->GetDexCache()) {
const DexFile::MethodId& other_mid =
dex_file->GetMethodId(other->GetMethod()->GetDexMethodIndex());
return mid.name_idx_ == other_mid.name_idx_ && mid.proto_idx_ == other_mid.proto_idx_;
}
const DexFile* other_dex_file = other->method_->GetDexFile();
const DexFile::MethodId& other_mid =
other_dex_file->GetMethodId(other->GetMethod()->GetDexMethodIndex());
if (!DexFileStringEquals(dex_file, mid.name_idx_, other_dex_file, other_mid.name_idx_)) {
return false; // Name mismatch.
}
return dex_file->GetMethodSignature(mid) == other_dex_file->GetMethodSignature(other_mid);
}
uint32_t MethodHelper::FindDexMethodIndexInOtherDexFile(const DexFile& other_dexfile)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::ArtMethod* method = GetMethod();
const DexFile* dexfile = method->GetDexFile();
if (dexfile == &other_dexfile) {
return method->GetDexMethodIndex();
}
const DexFile::MethodId& mid = dexfile->GetMethodId(method->GetDexMethodIndex());
const char* mid_declaring_class_descriptor = dexfile->StringByTypeIdx(mid.class_idx_);
const DexFile::StringId* other_descriptor =
other_dexfile.FindStringId(mid_declaring_class_descriptor);
if (other_descriptor != nullptr) {
const DexFile::TypeId* other_type_id =
other_dexfile.FindTypeId(other_dexfile.GetIndexForStringId(*other_descriptor));
if (other_type_id != nullptr) {
const char* mid_name = dexfile->GetMethodName(mid);
const DexFile::StringId* other_name = other_dexfile.FindStringId(mid_name);
if (other_name != nullptr) {
uint16_t other_return_type_idx;
std::vector<uint16_t> other_param_type_idxs;
bool success = other_dexfile.CreateTypeList(
dexfile->GetMethodSignature(mid).ToString(), &other_return_type_idx,
&other_param_type_idxs);
if (success) {
const DexFile::ProtoId* other_sig =
other_dexfile.FindProtoId(other_return_type_idx, other_param_type_idxs);
if (other_sig != nullptr) {
const DexFile::MethodId* other_mid = other_dexfile.FindMethodId(
*other_type_id, *other_name, *other_sig);
if (other_mid != nullptr) {
return other_dexfile.GetIndexForMethodId(*other_mid);
}
}
}
}
}
}
return DexFile::kDexNoIndex;
}
uint32_t MethodHelper::FindDexMethodIndexInOtherDexFile(const DexFile& other_dexfile,
uint32_t name_and_signature_idx)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
mirror::ArtMethod* method = GetMethod();
const DexFile* dexfile = method->GetDexFile();
const uint32_t dex_method_idx = method->GetDexMethodIndex();
const DexFile::MethodId& mid = dexfile->GetMethodId(dex_method_idx);
const DexFile::MethodId& name_and_sig_mid = other_dexfile.GetMethodId(name_and_signature_idx);
DCHECK_STREQ(dexfile->GetMethodName(mid), other_dexfile.GetMethodName(name_and_sig_mid));
DCHECK_EQ(dexfile->GetMethodSignature(mid), other_dexfile.GetMethodSignature(name_and_sig_mid));
if (dexfile == &other_dexfile) {
return dex_method_idx;
}
const char* mid_declaring_class_descriptor = dexfile->StringByTypeIdx(mid.class_idx_);
const DexFile::StringId* other_descriptor =
other_dexfile.FindStringId(mid_declaring_class_descriptor);
if (other_descriptor != nullptr) {
const DexFile::TypeId* other_type_id =
other_dexfile.FindTypeId(other_dexfile.GetIndexForStringId(*other_descriptor));
if (other_type_id != nullptr) {
const DexFile::MethodId* other_mid = other_dexfile.FindMethodId(
*other_type_id, other_dexfile.GetStringId(name_and_sig_mid.name_idx_),
other_dexfile.GetProtoId(name_and_sig_mid.proto_idx_));
if (other_mid != nullptr) {
return other_dexfile.GetIndexForMethodId(*other_mid);
}
}
}
return DexFile::kDexNoIndex;
}
} // namespace art
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