1 // Copyright 2020 The Pigweed Authors
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
7 // https://www.apache.org/licenses/LICENSE-2.0
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
18 #include "pw_polyfill/standard_library/namespace.h"
20 // Define std::data and std::size.
21 #ifndef __cpp_lib_nonmember_container_access
22 #define __cpp_lib_nonmember_container_access 201411L
26 _PW_POLYFILL_BEGIN_NAMESPACE_STD
29 constexpr auto data(C& container) -> decltype(container.data()) {
30 return container.data();
34 constexpr auto data(const C& container) -> decltype(container.data()) {
35 return container.data();
38 template <typename T, size_t kSize>
39 constexpr T* data(T (&array)[kSize]) noexcept {
44 constexpr auto size(const C& container) -> decltype(container.size()) {
45 return container.size();
48 template <typename T, size_t kSize>
49 constexpr size_t size(const T (&)[kSize]) noexcept {
53 _PW_POLYFILL_END_NAMESPACE_STD
55 #endif // __cpp_lib_nonmember_container_access