1 /*
2 * Copyright (C) 2019 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 ART_LIBARTBASE_BASE_STRING_VIEW_CPP20_H_
18 #define ART_LIBARTBASE_BASE_STRING_VIEW_CPP20_H_
19
20 #include <string_view>
21
22 namespace art {
23
24 // Replacement functions for std::string_view::starts_with(), ends_with()
25 // which shall be available in C++20.
26 #if __cplusplus >= 202000L
27 #error "When upgrading to C++20, remove this error and file a bug to remove this workaround."
28 #endif
29
StartsWith(std::string_view sv,std::string_view prefix)30 inline bool StartsWith(std::string_view sv, std::string_view prefix) {
31 return sv.substr(0u, prefix.size()) == prefix;
32 }
33
EndsWith(std::string_view sv,std::string_view suffix)34 inline bool EndsWith(std::string_view sv, std::string_view suffix) {
35 return sv.size() >= suffix.size() && sv.substr(sv.size() - suffix.size()) == suffix;
36 }
37
38 } // namespace art
39
40 #endif // ART_LIBARTBASE_BASE_STRING_VIEW_CPP20_H_
41