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76 lines
2.2 KiB
C++
76 lines
2.2 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 <list>
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#include <vector>
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#include <range/v3/core.hpp>
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#include <range/v3/utility/copy.hpp>
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#include <range/v3/iterator/unreachable_sentinel.hpp>
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#include <range/v3/iterator_range.hpp>
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#include <range/v3/view/all.hpp>
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#include "../simple_test.hpp"
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#include "../test_utils.hpp"
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struct empty
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{};
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int main()
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{
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std::vector<int> vi{1,2,3,4};
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using namespace ranges;
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iterator_range<std::vector<int>::iterator> r0 {vi.begin(), vi.end()};
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CPP_assert(view_<decltype(r0)>);
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CPP_assert(sized_range<decltype(r0)>);
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CHECK(r0.size() == 4u);
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CHECK(r0.begin() == vi.begin());
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CHECK(r0.end() == vi.end());
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CHECK(ranges::get<0>(r0) == vi.begin());
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CHECK(ranges::get<1>(r0) == vi.end());
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++r0.begin();
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CHECK(r0.size() == 3u);
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std::pair<std::vector<int>::iterator, std::vector<int>::iterator> p0 = r0;
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CHECK(p0.first == vi.begin()+1);
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CHECK(p0.second == vi.end());
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iterator_range<std::vector<int>::iterator, unreachable_sentinel_t> r1 { r0.begin(), {} };
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CPP_assert(view_<decltype(r1)>);
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CPP_assert(!sized_range<decltype(r1)>);
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CHECK(r1.begin() == vi.begin()+1);
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r1.end() = unreachable;
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++r0.begin();
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CHECK(r0.begin() == vi.begin()+2);
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CHECK(r0.size() == 2u);
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--r0.end();
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CHECK(r0.end() == vi.end()-1);
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CHECK(r0.size() == 1u);
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CHECK(r0.front() == 3);
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CHECK(r0.back() == 3);
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std::pair<std::vector<int>::iterator, unreachable_sentinel_t> p1 = r1;
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CHECK(p1.first == vi.begin()+1);
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iterator_range<std::vector<int>::iterator, unreachable_sentinel_t> r2 { p1 };
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CHECK(r1.begin() == vi.begin()+1);
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std::list<int> li{1,2,3,4};
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sized_iterator_range<std::list<int>::iterator> l0 {li.begin(), li.end(), li.size()};
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CPP_assert(view_<decltype(l0)>);
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CPP_assert(sized_range<decltype(l0)>);
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CHECK(l0.begin() == li.begin());
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CHECK(l0.end() == li.end());
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CHECK(l0.size() == li.size());
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return ::test_result();
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}
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