1 // Copyright 2022 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #pragma once 15 16 #include <iterator> 17 18 #include "pw_polyfill/standard.h" 19 20 namespace pw::containers { 21 22 #if PW_CXX_STANDARD_IS_SUPPORTED(20) 23 24 // If std::contiguous_iterator_tag exists, use it directly. 25 using std::contiguous_iterator_tag; 26 27 #else 28 29 // If std::contiguous_iterator_tag does not exist, define a stand-in type. 30 struct contiguous_iterator_tag : public std::random_access_iterator_tag {}; 31 32 #endif // PW_CXX_STANDARD_IS_SUPPORTED(20) 33 34 } // namespace pw::containers 35