dex_file-inl.h revision fc0e94bed3f88ed7e50854fd8dfaf5dcb345250f 
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_DEX_FILE_INL_H_
18#define ART_RUNTIME_DEX_FILE_INL_H_
19
20#include "base/logging.h"
21#include "base/stringpiece.h"
22#include "dex_file.h"
23#include "leb128.h"
24#include "utils.h"
25
26namespace art {
27
28inline int32_t DexFile::GetStringLength(const StringId& string_id) const {
29  const byte* ptr = begin_ + string_id.string_data_off_;
30  return DecodeUnsignedLeb128(&ptr);
31}
32
33inline const char* DexFile::GetStringDataAndLength(const StringId& string_id, uint32_t* length) const {
34  DCHECK(length != NULL) << GetLocation();
35  const byte* ptr = begin_ + string_id.string_data_off_;
36  *length = DecodeUnsignedLeb128(&ptr);
37  return reinterpret_cast<const char*>(ptr);
38}
39
40inline StringPiece DexFile::StringDataAsStringPieceByIdx(uint32_t idx) const {
41  if (idx == kDexNoIndex) {
42    return StringPiece();
43  }
44  const StringId& string_id = GetStringId(idx);
45  uint32_t length;
46  const char* data = GetStringDataAndLength(string_id, &length);
47  return StringPiece(data, static_cast<int>(length));
48}
49
50inline const DexFile::TryItem* DexFile::GetTryItems(const CodeItem& code_item, uint32_t offset) {
51  const uint16_t* insns_end_ = &code_item.insns_[code_item.insns_size_in_code_units_];
52  return reinterpret_cast<const TryItem*>
53      (RoundUp(reinterpret_cast<uint32_t>(insns_end_), 4)) + offset;
54}
55
56}  // namespace art
57
58#endif  // ART_RUNTIME_DEX_FILE_INL_H_
59