// Copyright Antony Polukhin, 2016-2020.
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_STACKTRACE_DETAIL_TO_HEX_ARRAY_HPP
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#define BOOST_STACKTRACE_DETAIL_TO_HEX_ARRAY_HPP
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#include <boost/config.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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# pragma once
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#endif
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#include <boost/array.hpp>
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#include <boost/static_assert.hpp>
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#include <boost/type_traits/is_pointer.hpp>
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#include <boost/type_traits/make_unsigned.hpp>
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namespace boost { namespace stacktrace { namespace detail {
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BOOST_STATIC_CONSTEXPR char to_hex_array_bytes[] = "0123456789ABCDEF";
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template <class T>
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inline boost::array<char, 2 + sizeof(void*) * 2 + 1> to_hex_array(T addr) BOOST_NOEXCEPT {
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boost::array<char, 2 + sizeof(void*) * 2 + 1> ret = {"0x"};
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ret.back() = '\0';
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BOOST_STATIC_ASSERT_MSG(!boost::is_pointer<T>::value, "");
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const std::size_t s = sizeof(T);
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char* out = ret.data() + s * 2 + 1;
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for (std::size_t i = 0; i < s; ++i) {
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const unsigned char tmp_addr = (addr & 0xFFu);
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*out = to_hex_array_bytes[tmp_addr & 0xF];
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-- out;
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*out = to_hex_array_bytes[tmp_addr >> 4];
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-- out;
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addr >>= 8;
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}
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return ret;
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}
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inline boost::array<char, 2 + sizeof(void*) * 2 + 1> to_hex_array(const void* addr) BOOST_NOEXCEPT {
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return to_hex_array(
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reinterpret_cast< boost::make_unsigned<std::ptrdiff_t>::type >(addr)
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);
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}
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}}} // namespace boost::stacktrace::detail
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#endif // BOOST_STACKTRACE_DETAIL_TO_HEX_ARRAY_HPP
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