forked from boostorg/core
127 lines
3.0 KiB
C++
127 lines
3.0 KiB
C++
#ifndef BOOST_CORE_DEMANGLE_HPP_INCLUDED
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#define BOOST_CORE_DEMANGLE_HPP_INCLUDED
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// core::demangle
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//
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// Copyright 2014 Peter Dimov
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// Copyright 2014 Andrey Semashev
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//
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// Distributed under the Boost Software License, Version 1.0.
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// See 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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#include <boost/config.hpp>
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#include <string>
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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// __has_include is currently supported by GCC and Clang. However GCC 4.9 may have issues and
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// returns 1 for 'defined( __has_include )', while '__has_include' is actually not supported:
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// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63662
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#if defined( __has_include ) && (!defined( BOOST_GCC ) || (__GNUC__ + 0) >= 5)
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# if __has_include(<cxxabi.h>)
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# define BOOST_CORE_HAS_CXXABI_H
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# endif
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#elif defined( __GLIBCXX__ ) || defined( __GLIBCPP__ )
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# define BOOST_CORE_HAS_CXXABI_H
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#endif
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#if defined( BOOST_CORE_HAS_CXXABI_H )
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# include <cxxabi.h>
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// For some archtectures (mips, mips64, x86, x86_64) cxxabi.h in Android NDK is implemented by gabi++ library
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// (https://android.googlesource.com/platform/ndk/+/master/sources/cxx-stl/gabi++/), which does not implement
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// abi::__cxa_demangle(). We detect this implementation by checking the include guard here.
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# if defined( __GABIXX_CXXABI_H__ )
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# undef BOOST_CORE_HAS_CXXABI_H
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# else
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# include <cstdlib>
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# include <cstddef>
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# endif
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#endif
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namespace boost
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{
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namespace core
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{
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inline char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT;
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inline void demangle_free( char const * name ) BOOST_NOEXCEPT;
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class scoped_demangled_name
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{
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private:
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char const * m_p;
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public:
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explicit scoped_demangled_name( char const * name ) BOOST_NOEXCEPT :
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m_p( demangle_alloc( name ) )
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{
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}
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~scoped_demangled_name() BOOST_NOEXCEPT
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{
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demangle_free( m_p );
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}
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char const * get() const BOOST_NOEXCEPT
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{
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return m_p;
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}
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BOOST_DELETED_FUNCTION(scoped_demangled_name( scoped_demangled_name const& ))
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BOOST_DELETED_FUNCTION(scoped_demangled_name& operator= ( scoped_demangled_name const& ))
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};
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#if defined( BOOST_CORE_HAS_CXXABI_H )
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inline char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT
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{
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int status = 0;
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std::size_t size = 0;
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return abi::__cxa_demangle( name, NULL, &size, &status );
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}
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inline void demangle_free( char const * name ) BOOST_NOEXCEPT
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{
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std::free( const_cast< char* >( name ) );
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}
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inline std::string demangle( char const * name )
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{
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scoped_demangled_name demangled_name( name );
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char const * p = demangled_name.get();
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if( !p )
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p = name;
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return p;
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}
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#else
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inline char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT
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{
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return name;
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}
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inline void demangle_free( char const * ) BOOST_NOEXCEPT
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{
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}
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inline std::string demangle( char const * name )
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{
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return name;
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}
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#endif
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} // namespace core
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} // namespace boost
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#undef BOOST_CORE_HAS_CXXABI_H
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#endif // #ifndef BOOST_CORE_DEMANGLE_HPP_INCLUDED
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