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//
// 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
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