1/* 2 * Copyright (C) 2007 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 ANDROID_TOKENIZER_H 18#define ANDROID_TOKENIZER_H 19 20#include <utils/Vector.h> 21#include <utils/Errors.h> 22 23// ---------------------------------------------------------------------------- 24 25namespace android { 26 27class Tokenizer 28{ 29public: 30 Tokenizer(); 31 Tokenizer(const Tokenizer& other); 32 ~Tokenizer(); 33 34 uint32_t acquire(); 35 status_t reserve(uint32_t token); 36 status_t release(uint32_t token); 37 bool isAcquired(uint32_t token) const; 38 39 void dump() const; 40 41 struct run_t { 42 run_t() {}; 43 run_t(uint32_t f, uint32_t l) : first(f), length(l) {} 44 uint32_t first; 45 uint32_t length; 46 }; 47private: 48 ssize_t _indexOrderOf(uint32_t token, size_t* order=0) const; 49 ssize_t _insertTokenAt(uint32_t token, size_t index); 50 Vector<run_t> mRanges; 51}; 52 53}; // namespace android 54 55// ---------------------------------------------------------------------------- 56 57#endif // ANDROID_TOKENIZER_H 58