/* * 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. */ #ifndef ART_COMPILER_LEB128_ENCODER_H_ #define ART_COMPILER_LEB128_ENCODER_H_ #include "base/macros.h" namespace art { // An encoder with an API similar to vector<uint32_t> where the data is captured in ULEB128 format. class UnsignedLeb128EncodingVector { public: UnsignedLeb128EncodingVector() { } void PushBack(uint32_t value) { bool done = false; do { uint8_t out = value & 0x7f; if (out != value) { data_.push_back(out | 0x80); value >>= 7; } else { data_.push_back(out); done = true; } } while (!done); } template<typename It> void InsertBack(It cur, It end) { for (; cur != end; ++cur) { PushBack(*cur); } } const std::vector<uint8_t>& GetData() const { return data_; } private: std::vector<uint8_t> data_; DISALLOW_COPY_AND_ASSIGN(UnsignedLeb128EncodingVector); }; } // namespace art #endif // ART_COMPILER_LEB128_ENCODER_H_