mirror of
https://github.com/boostorg/charconv.git
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78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
// Copyright 2023 Matt Borland
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/charconv.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <system_error>
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#include <type_traits>
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#include <limits>
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#include <cstring>
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#include <cstdint>
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#include <cerrno>
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#include <utility>
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// No overflows, negative numbers, locales, etc.
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template <typename T>
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void simple_from_chars_test()
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{
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const char* buffer = "34";
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T v = 0;
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auto r = boost::charconv::from_chars(buffer, buffer + std::strlen(buffer), v);
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BOOST_TEST( r ) && BOOST_TEST_EQ(v, static_cast<T>(34));
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BOOST_TEST(r == r);
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boost::charconv::from_chars_result r2 {r.ptr, std::errc()};
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BOOST_TEST(r == r2);
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const char* buffer2 = "12";
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T v2 = 0;
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auto r3 = boost::charconv::from_chars(buffer2, buffer2 + std::strlen(buffer), v2);
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BOOST_TEST(r != r3);
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BOOST_TEST(r3) && BOOST_TEST_EQ(v2, static_cast<T>(12));
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}
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template <typename T>
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void simple_to_chars_test()
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{
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char buffer1[64] {};
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T v = 34;
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auto r1 = boost::charconv::to_chars(buffer1, buffer1 + sizeof(buffer1) - 1, v);
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BOOST_TEST(r1);
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BOOST_TEST_CSTR_EQ(buffer1, "34");
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boost::charconv::to_chars_result r {r1.ptr, r1.ec};
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BOOST_TEST(r1 == r);
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char buffer2[64] {};
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T v2 = 12;
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auto r2 = boost::charconv::to_chars(buffer2, buffer2 + sizeof(buffer2) - 1, v2);
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BOOST_TEST(r1 != r2);
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BOOST_TEST(r2);
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BOOST_TEST_CSTR_EQ(buffer2, "12");
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// If the base is not 2-36 inclusive return invalid value
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char buffer3[64] {};
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T v3 = 12;
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auto r3 = boost::charconv::to_chars(buffer3, buffer3 + sizeof(buffer3) - 1, v3, -2);
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BOOST_TEST(r3.ec == std::errc::invalid_argument);
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BOOST_TEST(!r3);
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auto r4 = boost::charconv::to_chars(buffer3, buffer3 + sizeof(buffer3) - 1, v3, 90);
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BOOST_TEST(r4.ec == std::errc::invalid_argument);
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BOOST_TEST(!r4);
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}
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int main()
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{
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simple_from_chars_test<std::int32_t>();
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simple_from_chars_test<std::uint64_t>();
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simple_to_chars_test<std::int32_t>();
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simple_to_chars_test<std::uint64_t>();
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return boost::report_errors();
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}
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