72 lines
2 KiB
C++
72 lines
2 KiB
C++
// Copyright 2018 The Abseil Authors.
|
|
//
|
|
// 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
|
|
//
|
|
// https://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 "absl/container/internal/hash_generator_testing.h"
|
|
|
|
#include <deque>
|
|
|
|
namespace absl {
|
|
namespace container_internal {
|
|
namespace hash_internal {
|
|
namespace {
|
|
|
|
class RandomDeviceSeedSeq {
|
|
public:
|
|
using result_type = typename std::random_device::result_type;
|
|
|
|
template <class Iterator>
|
|
void generate(Iterator start, Iterator end) {
|
|
while (start != end) {
|
|
*start = gen_();
|
|
++start;
|
|
}
|
|
}
|
|
|
|
private:
|
|
std::random_device gen_;
|
|
};
|
|
|
|
} // namespace
|
|
|
|
std::mt19937_64* GetSharedRng() {
|
|
RandomDeviceSeedSeq seed_seq;
|
|
static auto* rng = new std::mt19937_64(seed_seq);
|
|
return rng;
|
|
}
|
|
|
|
std::string Generator<std::string>::operator()() const {
|
|
// NOLINTNEXTLINE(runtime/int)
|
|
std::uniform_int_distribution<short> chars(0x20, 0x7E);
|
|
std::string res;
|
|
res.resize(32);
|
|
std::generate(res.begin(), res.end(),
|
|
[&]() { return chars(*GetSharedRng()); });
|
|
return res;
|
|
}
|
|
|
|
absl::string_view Generator<absl::string_view>::operator()() const {
|
|
static auto* arena = new std::deque<std::string>();
|
|
// NOLINTNEXTLINE(runtime/int)
|
|
std::uniform_int_distribution<short> chars(0x20, 0x7E);
|
|
arena->emplace_back();
|
|
auto& res = arena->back();
|
|
res.resize(32);
|
|
std::generate(res.begin(), res.end(),
|
|
[&]() { return chars(*GetSharedRng()); });
|
|
return res;
|
|
}
|
|
|
|
} // namespace hash_internal
|
|
} // namespace container_internal
|
|
} // namespace absl
|