47 lines
1.3 KiB
Text
47 lines
1.3 KiB
Text
|
//
|
||
|
|
// immer: immutable data structures for C++
|
||
|
|
// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente
|
||
|
|
//
|
||
|
|
// This software is distributed under the Boost Software License, Version 1.0.
|
||
|
|
// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt
|
||
|
|
//
|
||
|
|
|
||
|
|
#include <immer/box.hpp>
|
||
|
|
|
||
|
|
#include <random>
|
||
|
|
#include <vector>
|
||
|
|
#include <cassert>
|
||
|
|
#include <functional>
|
||
|
|
#include <algorithm>
|
||
|
|
|
||
|
|
#define GENERATOR_T generate_unsigned
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
struct GENERATOR_T
|
||
|
|
{
|
||
|
|
static constexpr auto char_set = "_-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
|
||
|
|
static constexpr auto max_length = 64;
|
||
|
|
static constexpr auto min_length = 8;
|
||
|
|
|
||
|
|
auto operator() (std::size_t runs) const
|
||
|
|
{
|
||
|
|
assert(runs > 0);
|
||
|
|
auto engine = std::default_random_engine{42};
|
||
|
|
auto dist = std::uniform_int_distribution<unsigned>{};
|
||
|
|
auto gen = std::bind(dist, engine);
|
||
|
|
auto r = std::vector<immer::box<std::string>>(runs);
|
||
|
|
std::generate_n(r.begin(), runs, [&] {
|
||
|
|
auto len = gen() % (max_length - min_length) + min_length;
|
||
|
|
auto str = std::string(len, ' ');
|
||
|
|
std::generate_n(str.begin(), len, [&] {
|
||
|
|
return char_set[gen() % sizeof(char_set)];
|
||
|
|
});
|
||
|
|
return str;
|
||
|
|
});
|
||
|
|
return r;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace
|