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Added low level tools for demangling. Requested by Boost.TypeIndex author.

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This commit is contained in:
Andrey Semashev
2014-06-12 19:23:36 +04:00
parent 216e57693e
commit 6cdeec8841
3 changed files with 189 additions and 59 deletions
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86
include/boost/core/demangle.hpp
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@@ -1,15 +1,10 @@
#ifndef BOOST_CORE_DEMANGLE_HPP_INCLUDED
#define BOOST_CORE_DEMANGLE_HPP_INCLUDED
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
// core::demangle
//
// Copyright 2014 Peter Dimov
// Copyright 2014 Andrey Semashev
//
// Distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE_1_0.txt or copy at
@@ -18,6 +13,10 @@
#include <boost/config.hpp>
#include <string>
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
#if defined( __clang__ ) && defined( __has_include )
# if __has_include(<cxxabi.h>)
# define BOOST_CORE_HAS_CXXABI_H
@@ -38,34 +37,56 @@ namespace boost
namespace core
{
char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT;
void demangle_free( char const * name ) BOOST_NOEXCEPT;
class scoped_demangled_name
{
private:
char const * m_p;
public:
explicit scoped_demangled_name( char const * name ) BOOST_NOEXCEPT :
m_p( demangle_alloc( name ) )
{
}
~scoped_demangled_name() BOOST_NOEXCEPT
{
demangle_free( m_p );
}
char const * get() const BOOST_NOEXCEPT
{
return m_p;
}
BOOST_DELETED_FUNCTION(scoped_demangled_name( scoped_demangled_name const& ))
BOOST_DELETED_FUNCTION(scoped_demangled_name& operator= ( scoped_demangled_name const& ))
};
#if defined( BOOST_CORE_HAS_CXXABI_H )
// lifted from boost/exception/detail/type_info.hpp
inline char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT
{
int status = 0;
std::size_t size = 0;
return abi::__cxa_demangle( name, NULL, &size, &status );
}
inline void demangle_free( char const * name ) BOOST_NOEXCEPT
{
std::free( const_cast< char* >( name ) );
}
inline std::string demangle( char const * name )
{
struct auto_free
scoped_demangled_name demangled_name( name );
char const * const p = demangled_name.get();
if( p )
{
explicit auto_free( char * ptr ): p( ptr )
{
}
~auto_free()
{
std::free( p );
}
char * p;
};
int status = 0;
std::size_t size = 0;
auto_free demangled( abi::__cxa_demangle( name, NULL, &size, &status ) );
if( demangled.p )
{
return demangled.p;
return p;
}
else
{
@@ -75,6 +96,15 @@ inline std::string demangle( char const * name )
#else
inline char const * demangle_alloc( char const * name ) BOOST_NOEXCEPT
{
return name;
}
inline void demangle_free( char const * ) BOOST_NOEXCEPT
{
}
inline std::string demangle( char const * name )
{
return name;