1 // Copyright 2020 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 "pw_polyfill/standard_library/namespace.h" 17 18 _PW_POLYFILL_BEGIN_NAMESPACE_STD 19 20 template <typename T> 21 class initializer_list { 22 public: 23 using value_type = T; 24 using reference = const T&; 25 using const_reference = const T&; 26 using size_type = decltype(sizeof(0)); 27 using iterator = const T*; 28 using const_iterator = const T*; 29 initializer_list()30 constexpr initializer_list() : begin_(nullptr), size_(0) {} 31 size()32 size_type size() const { return size_; } 33 begin()34 iterator begin() const { return begin_; } end()35 iterator end() const { return begin_ + size_; } 36 37 private: 38 // The order of these members must stay the same. The compiler makes 39 // assumptions about this class, and reordering these breaks things. 40 const T* begin_; 41 size_type size_; 42 }; 43 44 _PW_POLYFILL_END_NAMESPACE_STD 45