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bitcore-node-zcash/include/boost/type_index/stl_type_index.hpp

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//
// Copyright (c) Antony Polukhin, 2013-2014.
//
//
// 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_TYPE_INDEX_STL_TYPE_INDEX_HPP
#define BOOST_TYPE_INDEX_STL_TYPE_INDEX_HPP
/// \file stl_type_index.hpp
/// \brief Contains boost::typeindex::stl_type_index class.
///
/// boost::typeindex::stl_type_index class can be used as a drop-in replacement
/// for std::type_index.
///
/// It is used in situations when RTTI is enabled or typeid() method is available.
/// When typeid() is disabled or BOOST_TYPE_INDEX_FORCE_NO_RTTI_COMPATIBILITY macro
/// is defined boost::typeindex::ctti is usually used instead of boost::typeindex::stl_type_index.
#include <boost/type_index/type_index_facade.hpp>
// MSVC is capable of calling typeid(T) even when RTTI is off
#if defined(BOOST_NO_RTTI) && !defined(BOOST_MSVC)
#error "File boost/type_index/stl_type_index.ipp is not usable when typeid() is not available."
#endif
#include <typeinfo>
#include <cstring> // std::strcmp, std::strlen
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/type_traits/is_reference.hpp>
#include <boost/type_traits/is_volatile.hpp>
#include <boost/type_traits/remove_cv.hpp>
#include <boost/type_traits/remove_reference.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/or.hpp>
#include <boost/functional/hash_fwd.hpp>
#ifdef __GNUC__
# include <cxxabi.h> // abi::__cxa_demangle
#endif
#if !defined(BOOST_MSVC)
# include <boost/assert.hpp>
# include <cstdlib> // std::free
# include <algorithm> // std::find, std::search
#endif
#if (defined(__EDG_VERSION__) && __EDG_VERSION__ < 245) \
|| (defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 744)
# include <boost/type_traits/is_signed.hpp>
# include <boost/type_traits/make_signed.hpp>
# include <boost/mpl/identity.hpp>
#endif
#ifdef BOOST_HAS_PRAGMA_ONCE
# pragma once
#endif
namespace boost { namespace typeindex {
/// \class stl_type_index
/// This class is a wrapper around std::type_info, that workarounds issues and provides
/// much more rich interface. \b For \b description \b of \b functions \b see type_index_facade.
///
/// This class requires typeid() to work. For cases when RTTI is disabled see ctti_type_index.
class stl_type_index
: public type_index_facade<
stl_type_index,
#ifdef BOOST_NO_STD_TYPEINFO
type_info
#else
std::type_info
#endif
>
{
public:
#ifdef BOOST_NO_STD_TYPEINFO
typedef type_info type_info_t;
#else
typedef std::type_info type_info_t;
#endif
private:
const type_info_t* data_;
public:
inline stl_type_index() BOOST_NOEXCEPT
: data_(&typeid(void))
{}
inline stl_type_index(const type_info_t& data) BOOST_NOEXCEPT
: data_(&data)
{}
inline const type_info_t& type_info() const BOOST_NOEXCEPT;
inline const char* raw_name() const BOOST_NOEXCEPT;
inline const char* name() const BOOST_NOEXCEPT;
inline std::string pretty_name() const;
inline std::size_t hash_code() const BOOST_NOEXCEPT;
inline bool equal(const stl_type_index& rhs) const BOOST_NOEXCEPT;
inline bool before(const stl_type_index& rhs) const BOOST_NOEXCEPT;
template <class T>
inline static stl_type_index type_id() BOOST_NOEXCEPT;
template <class T>
inline static stl_type_index type_id_with_cvr() BOOST_NOEXCEPT;
template <class T>
inline static stl_type_index type_id_runtime(const T& value) BOOST_NOEXCEPT;
};
inline const stl_type_index::type_info_t& stl_type_index::type_info() const BOOST_NOEXCEPT {
return *data_;
}
inline const char* stl_type_index::raw_name() const BOOST_NOEXCEPT {
#ifdef _MSC_VER
return data_->raw_name();
#else
return data_->name();
#endif
}
inline const char* stl_type_index::name() const BOOST_NOEXCEPT {
return data_->name();
}
namespace detail {
class free_at_scope_exit {
char* to_free_;
public:
explicit free_at_scope_exit(char* to_free) BOOST_NOEXCEPT
: to_free_(to_free)
{}
~free_at_scope_exit() BOOST_NOEXCEPT {
std::free(to_free_);
}
};
}
inline std::string stl_type_index::pretty_name() const {
static const char cvr_saver_name[] = "boost::typeindex::detail::cvr_saver<";
#if defined(_MSC_VER)
std::string ret = data_->name();
std::string::size_type pos_beg = ret.find(cvr_saver_name);
if (pos_beg == std::string::npos) {
return ret;
}
const char* begin = ret.c_str() + pos_beg + sizeof(cvr_saver_name) - 1;
const char* end = ret.c_str() + ret.size() - 1;
#else
int status = 0;
char* demang = abi::__cxa_demangle(raw_name(), NULL, 0, &status);
detail::free_at_scope_exit scope(demang);
BOOST_ASSERT(!status);
const std::size_t length = std::strlen(demang);
const char* begin = std::search(
demang, demang + length,
cvr_saver_name, cvr_saver_name + sizeof(cvr_saver_name) - 1
);
if (begin == demang + length) {
return std::string(demang, demang + length);
}
begin += sizeof(cvr_saver_name) - 1;
const char* end = demang + length - 1;
#endif
while (*begin == ' ') { // begin is zero terminated
++ begin;
}
while (end != begin && *end != '>') {
-- end;
}
// we have cvr_saver_name somewhere at the start of the end
while (end != begin && *(end - 1) == ' ') {
-- end;
}
if (begin >= end) {
// Some strange error in demangled name parsing
return begin;
}
return std::string(begin, end);
}
inline std::size_t stl_type_index::hash_code() const BOOST_NOEXCEPT {
#if _MSC_VER > 1600 || (__GNUC__ == 4 && __GNUC_MINOR__ > 5 && defined(__GXX_EXPERIMENTAL_CXX0X__))
return data_->hash_code();
#else
return boost::hash_range(raw_name(), raw_name() + std::strlen(raw_name()));
#endif
}
/// @cond
// for this compiler at least, cross-shared-library type_info
// comparisons don't work, so we are using typeid(x).name() instead.
# if (defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 5))) \
|| defined(_AIX) \
|| (defined(__sgi) && defined(__host_mips)) \
|| (defined(__hpux) && defined(__HP_aCC)) \
|| (defined(linux) && defined(__INTEL_COMPILER) && defined(__ICC))
# define BOOST_CLASSINFO_COMPARE_BY_NAMES
# endif
/// @endcond
inline bool stl_type_index::equal(const stl_type_index& rhs) const BOOST_NOEXCEPT {
#ifdef BOOST_CLASSINFO_COMPARE_BY_NAMES
return raw_name() == rhs.raw_name() || !std::strcmp(raw_name(), rhs.raw_name());
#else
return *data_ == *rhs.data_;
#endif
}
inline bool stl_type_index::before(const stl_type_index& rhs) const BOOST_NOEXCEPT {
#ifdef BOOST_CLASSINFO_COMPARE_BY_NAMES
return raw_name() != rhs.raw_name() && std::strcmp(raw_name(), rhs.raw_name()) < 0;
#else
return !!data_->before(*rhs.data_);
#endif
}
#ifdef BOOST_CLASSINFO_COMPARE_BY_NAMES
#undef BOOST_CLASSINFO_COMPARE_BY_NAMES
#endif
template <class T>
inline stl_type_index stl_type_index::type_id() BOOST_NOEXCEPT {
typedef BOOST_DEDUCED_TYPENAME boost::remove_reference<T>::type no_ref_t;
typedef BOOST_DEDUCED_TYPENAME boost::remove_cv<no_ref_t>::type no_cvr_prefinal_t;
# if (defined(__EDG_VERSION__) && __EDG_VERSION__ < 245) \
|| (defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 744)
// Old EDG-based compilers seem to mistakenly distinguish 'integral' from 'signed integral'
// in typeid() expressions. Full temaplte specialization for 'integral' fixes that issue:
typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_<
boost::is_signed<no_cvr_prefinal_t>,
boost::make_signed<no_cvr_prefinal_t>,
boost::mpl::identity<no_cvr_prefinal_t>
>::type no_cvr_prefinal_lazy_t;
typedef BOOST_DEDUCED_TYPENAME no_cvr_prefinal_t::type no_cvr_t;
#else
typedef no_cvr_prefinal_t no_cvr_t;
#endif
return typeid(no_cvr_t);
}
namespace detail {
template <class T> class cvr_saver{};
}
template <class T>
inline stl_type_index stl_type_index::type_id_with_cvr() BOOST_NOEXCEPT {
typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_<
boost::mpl::or_<boost::is_reference<T>, boost::is_const<T>, boost::is_volatile<T> >,
detail::cvr_saver<T>,
T
>::type type;
return typeid(type);
}
template <class T>
inline stl_type_index stl_type_index::type_id_runtime(const T& value) BOOST_NOEXCEPT {
#ifdef BOOST_NO_RTTI
return value.boost_type_index_type_id_runtime_();
#else
return typeid(value);
#endif
}
}} // namespace boost::typeindex
#endif // BOOST_TYPE_INDEX_STL_TYPE_INDEX_HPP
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