1 /* 2 * Copyright (c) Facebook, Inc. and its affiliates. 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 #pragma once 18 19 #include <string> 20 21 #include <boost/regex/pending/unicode_iterator.hpp> 22 23 #include <folly/Range.h> 24 25 namespace folly { 26 27 template < 28 class Iterator = const char*, 29 class Base = folly::Range<boost::u8_to_u32_iterator<Iterator>>> 30 class UTF8Range : public Base { 31 public: UTF8Range(const folly::Range<Iterator> baseRange)32 /* implicit */ UTF8Range(const folly::Range<Iterator> baseRange) 33 : Base( 34 boost::u8_to_u32_iterator<Iterator>( 35 baseRange.begin(), baseRange.begin(), baseRange.end()), 36 boost::u8_to_u32_iterator<Iterator>( 37 baseRange.end(), baseRange.begin(), baseRange.end())) {} UTF8Range(const std::string & baseString)38 /* implicit */ UTF8Range(const std::string& baseString) 39 : Base(folly::Range<Iterator>(baseString)) {} 40 }; 41 42 using UTF8StringPiece = UTF8Range<const char*>; 43 44 } // namespace folly 45