| // Copyright 2015 Google Inc. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <benchmark/benchmark.h> |
| |
| namespace benchmark { |
| |
| namespace { |
| |
| // Compute the total size of a pack of std::strings |
| size_t size_impl() { return 0; } |
| |
| template <typename Head, typename... Tail> |
| size_t size_impl(const Head& head, const Tail&... tail) { |
| return head.size() + size_impl(tail...); |
| } |
| |
| // Join a pack of std::strings using a delimiter |
| // TODO: use absl::StrJoin |
| void join_impl(std::string&, char) {} |
| |
| template <typename Head, typename... Tail> |
| void join_impl(std::string& s, const char delimiter, const Head& head, |
| const Tail&... tail) { |
| if (!s.empty() && !head.empty()) { |
| s += delimiter; |
| } |
| |
| s += head; |
| |
| join_impl(s, delimiter, tail...); |
| } |
| |
| template <typename... Ts> |
| std::string join(char delimiter, const Ts&... ts) { |
| std::string s; |
| s.reserve(sizeof...(Ts) + size_impl(ts...)); |
| join_impl(s, delimiter, ts...); |
| return s; |
| } |
| } // namespace |
| |
| BENCHMARK_EXPORT |
| std::string BenchmarkName::str() const { |
| return join('/', function_name, args, min_time, min_warmup_time, iterations, |
| repetitions, time_type, threads); |
| } |
| } // namespace benchmark |