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