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79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
// Range v3 library
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//
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// Copyright Eric Niebler 2014-present
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//
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// Use, modification and distribution is subject to the
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// Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Project home: https://github.com/ericniebler/range-v3
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#include <vector>
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#include <memory>
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#include <range/v3/core.hpp>
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#include <range/v3/view/indirect.hpp>
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#include <range/v3/view/transform.hpp>
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#include "../simple_test.hpp"
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#include "../test_utils.hpp"
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int main()
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{
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using namespace ranges;
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{
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std::vector<std::shared_ptr<int>> vp;
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for(int i = 0; i < 10; ++i)
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vp.push_back(std::make_shared<int>(i));
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auto && rng = vp | views::indirect;
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CHECK(&*begin(rng) == vp[0].get());
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::check_equal(rng, {0, 1, 2, 3, 4, 5, 6, 7, 8, 9});
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}
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{
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int const some_ints[] = {0,1,2,3};
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int const *some_int_pointers[] = {
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some_ints + 0, some_ints + 1, some_ints + 2, some_ints + 3
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};
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auto make_range = [&]{
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return debug_input_view<int const *>{some_int_pointers} | views::indirect;
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};
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auto rng = make_range();
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::check_equal(rng, some_ints);
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rng = make_range();
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CHECK(&*begin(rng) == some_ints + 0);
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}
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#if RANGES_CXX_RETURN_TYPE_DEDUCTION >= RANGES_CXX_RETURN_TYPE_DEDUCTION_14
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{
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// regression test for #946
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class Data;
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struct Test
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{
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std::vector<Data*> m_list;
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auto list()
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{
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return m_list | ranges::views::indirect;
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}
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};
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class Data
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{};
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CHECK(Test{std::vector<Data*>(42)}.list().size() == 42u);
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}
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#endif // RANGES_CXX_RETURN_TYPE_DEDUCTION
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{
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// regression test for #952
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int some_ints[42]{};
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auto a = some_ints | views::transform([](int& i) { return &i; })
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| views::indirect;
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(void) a.begin();
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}
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return test_result();
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}
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