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authorDongHun Kwak <dh0128.kwak@samsung.com>2017-09-13 11:24:46 +0900
committerDongHun Kwak <dh0128.kwak@samsung.com>2017-09-13 11:25:39 +0900
commit4fadd968fa12130524c8380f33fcfe25d4de79e5 (patch)
treefd26a490cd15388d42fc6652b3c5c13012e7f93e /boost/stacktrace/detail/to_hex_array.hpp
parentb5c87084afaef42b2d058f68091be31988a6a874 (diff)
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Imported Upstream version 1.65.0upstream/1.65.0
Change-Id: Icf8400b375482cb11bcf77440a6934ba360d6ba4 Signed-off-by: DongHun Kwak <dh0128.kwak@samsung.com>
Diffstat (limited to 'boost/stacktrace/detail/to_hex_array.hpp')
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diff --git a/boost/stacktrace/detail/to_hex_array.hpp b/boost/stacktrace/detail/to_hex_array.hpp
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+// Copyright Antony Polukhin, 2016-2017.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_STACKTRACE_DETAIL_TO_HEX_ARRAY_HPP
+#define BOOST_STACKTRACE_DETAIL_TO_HEX_ARRAY_HPP
+
+#include <boost/config.hpp>
+#ifdef BOOST_HAS_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <boost/array.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+#include <boost/type_traits/make_unsigned.hpp>
+
+namespace boost { namespace stacktrace { namespace detail {
+
+BOOST_STATIC_CONSTEXPR char to_hex_array_bytes[] = "0123456789ABCDEF";
+
+template <class T>
+inline boost::array<char, 2 + sizeof(void*) * 2 + 1> to_hex_array(T addr) BOOST_NOEXCEPT {
+ boost::array<char, 2 + sizeof(void*) * 2 + 1> ret = {"0x"};
+ ret.back() = '\0';
+ BOOST_STATIC_ASSERT_MSG(!boost::is_pointer<T>::value, "");
+
+ const std::size_t s = sizeof(T);
+
+ char* out = ret.data() + s * 2 + 1;
+
+ for (std::size_t i = 0; i < s; ++i) {
+ const unsigned char tmp_addr = (addr & 0xFFu);
+ *out = to_hex_array_bytes[tmp_addr & 0xF];
+ -- out;
+ *out = to_hex_array_bytes[tmp_addr >> 4];
+ -- out;
+ addr >>= 8;
+ }
+
+ return ret;
+}
+
+inline boost::array<char, 2 + sizeof(void*) * 2 + 1> to_hex_array(const void* addr) BOOST_NOEXCEPT {
+ return to_hex_array(
+ reinterpret_cast< boost::make_unsigned<std::ptrdiff_t>::type >(addr)
+ );
+}
+
+}}} // namespace boost::stacktrace::detail
+
+#endif // BOOST_STACKTRACE_DETAIL_TO_HEX_ARRAY_HPP