1 /* 2 * Copyright 2017, 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 WORD_STREAM_IMPL_H 18 #define WORD_STREAM_IMPL_H 19 20 #include "word_stream.h" 21 22 #include <string> 23 24 namespace android { 25 namespace spirit { 26 27 class WordStreamImpl : public WordStream { 28 public: 29 WordStreamImpl(); 30 WordStreamImpl(const std::vector<uint32_t> &words); 31 WordStreamImpl(std::vector<uint32_t> &&words); 32 33 bool empty() const override { 34 return mWords.empty() || mIter == mWords.end(); 35 } 36 37 uint32_t operator*() { return *mIter; } 38 39 WordStreamImpl &operator>>(uint32_t *RHS) override { 40 *RHS = *mIter++; 41 return *this; 42 } 43 44 WordStreamImpl &operator>>(LiteralContextDependentNumber *RHS) override { 45 // TODO: check context in the instruction class to decide the actual size. 46 return *this >> (uint32_t *)(&RHS->intValue); 47 } 48 49 WordStreamImpl &operator>>(std::string *str) override; 50 51 std::vector<uint32_t> getWords() override { return mWords; } 52 53 WordStreamImpl &operator<<(const uint32_t RHS) override { 54 mWords.push_back(RHS); 55 return *this; 56 } 57 58 WordStreamImpl & 59 operator<<(const LiteralContextDependentNumber &RHS) override { 60 // TODO: check context in the instruction class to decide the actual size. 61 // TODO: maybe a word stream class should never take a context dependent 62 // type as argument. Always take concrete types such as int32, int64, float, 63 // double, etc. 64 return *this << (uint32_t)(RHS.intValue); 65 } 66 WordStreamImpl &operator<<(const std::string &str) override; 67 68 private: 69 std::vector<uint32_t> mWords; 70 std::vector<uint32_t>::const_iterator mIter; 71 }; 72 73 } // namespace spirit 74 } // namespace android 75 76 #endif // WORD_STREAM_IMPL_H 77
