python/src/converter/type_id.cpp at python313 · boostorg/python · GitHub

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// Copyright David Abrahams 2001.

// 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)

#include <boost/python/type_id.hpp>

#include <boost/python/detail/decorated_type_id.hpp>

#include <boost/python/detail/pymutex.hpp>

#include <utility>

#include <vector>

#include <algorithm>

#include <memory>

#include <cstdlib>

#include <cstring>

#if defined(__QNXNTO__)

# include <ostream>

#else /* defined(__QNXNTO__) */

#if !defined(__GNUC__) || __GNUC__ >= 3 || __SGI_STL_PORT || __EDG_VERSION__

# include <ostream>

#else

# include <ostream.h>

#endif

# ifdef BOOST_PYTHON_HAVE_GCC_CP_DEMANGLE

# if defined(__GNUC__) && __GNUC__ >= 3

// http://lists.debian.org/debian-gcc/2003/09/msg00055.html notes

// that, in cxxabi.h of gcc-3.x for x < 4, this type is used before it

// is declared.

# if __GNUC__ == 3 && __GNUC_MINOR__ < 4

class __class_type_info;

# endif

# include <cxxabi.h>

# endif

#endif /* defined(__QNXNTO__) */

namespace boost { namespace python {

# ifdef BOOST_PYTHON_HAVE_GCC_CP_DEMANGLE

# if defined(__QNXNTO__)

namespace cxxabi {

extern "C" char* __cxa_demangle(char const*, char*, std::size_t*, int*);

}

# else /* defined(__QNXNTO__) */

# ifdef __GNUC__

# if __GNUC__ < 3

namespace cxxabi = :: ;

extern "C" char* __cxa_demangle(char const*, char*, std::size_t*, int*);

# else

namespace cxxabi = ::abi; // GCC 3.1 and later

# if __GNUC__ == 3 && __GNUC_MINOR__ == 0

namespace abi

{

extern "C" char* __cxa_demangle(char const*, char*, std::size_t*, int*);

}

# endif /* __GNUC__ == 3 && __GNUC_MINOR__ == 0 */

# endif /* __GNUC__ < 3 */

# endif /* __GNUC__ */

# endif /* defined(__QNXNTO__) */

namespace

{

struct compare_first_cstring

{

template <class T>

bool operator()(T const& x, T const& y)

{

return std::strcmp(x.first,y.first) < 0;

}

};

struct free_mem

{

free_mem(char*p)

: p(p) {}

~free_mem()

{

std::free(p);

}

char* p;

};

}

bool cxxabi_cxa_demangle_is_broken()

{

BOOST_PYTHON_LOCK_STATE();

static bool was_tested = false;

static bool is_broken = false;

if (!was_tested) {

int status;

free_mem keeper(cxxabi::__cxa_demangle("b", 0, 0, &status));

was_tested = true;

if (status == -2 || strcmp(keeper.p, "bool") != 0) {

is_broken = true;

}

return is_broken;

}

namespace detail

{

BOOST_PYTHON_DECL char const* gcc_demangle(char const* mangled)

{

BOOST_PYTHON_LOCK_STATE();

typedef std::vector<

std::pair<char const*, char const*>

> mangling_map;

static mangling_map demangler;

mangling_map::iterator p

= std::lower_bound(

demangler.begin(), demangler.end()

, std::make_pair(mangled, (char const*)0)

, compare_first_cstring());

if (p == demangler.end() || strcmp(p->first, mangled))

{

int status;

free_mem keeper(

cxxabi::__cxa_demangle(mangled, 0, 0, &status)

);

assert(status != -3); // invalid argument error

if (status == -1)

{

throw std::bad_alloc();

}

else

{

char const* demangled

= status == -2

// Invalid mangled name. Best we can do is to

// return it intact.

? mangled

: keeper.p;

// Ult Mundane, 2005 Aug 17

// Contributed 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)

// The __cxa_demangle function is supposed to translate

// builtin types from their one-character mangled names,

// but it doesn't in gcc 3.3.5 and gcc 3.4.x.

if (cxxabi_cxa_demangle_is_broken()

&& status == -2 && strlen(mangled) == 1)

{

// list from

// http://www.codesourcery.com/cxx-abi/abi.html

switch (mangled[0])

{

case 'v': demangled = "void"; break;

case 'w': demangled = "wchar_t"; break;

case 'b': demangled = "bool"; break;

case 'c': demangled = "char"; break;

case 'a': demangled = "signed char"; break;

case 'h': demangled = "unsigned char"; break;

case 's': demangled = "short"; break;

case 't': demangled = "unsigned short"; break;

case 'i': demangled = "int"; break;

case 'j': demangled = "unsigned int"; break;

case 'l': demangled = "long"; break;

case 'm': demangled = "unsigned long"; break;

case 'x': demangled = "long long"; break;

case 'y': demangled = "unsigned long long"; break;

case 'n': demangled = "__int128"; break;

case 'o': demangled = "unsigned __int128"; break;

case 'f': demangled = "float"; break;

case 'd': demangled = "double"; break;

case 'e': demangled = "long double"; break;

case 'g': demangled = "__float128"; break;

case 'z': demangled = "..."; break;

}

p = demangler.insert(p, std::make_pair(mangled, demangled));

keeper.p = 0;

}

return p->second;

}

# endif

BOOST_PYTHON_DECL std::ostream& operator<<(std::ostream& os, type_info const& x)

{

return os << x.name();

}

namespace detail

{

BOOST_PYTHON_DECL std::ostream& operator<<(std::ostream& os, detail::decorated_type_info const& x)

{

os << x.m_base_type;

if (x.m_decoration & decorated_type_info::const_)

os << " const";

if (x.m_decoration & decorated_type_info::volatile_)

os << " volatile";

if (x.m_decoration & decorated_type_info::reference)

os << "&";

return os;

}

}} // namespace boost::python::converter

python/src/converter/type_id.cpp at python313 · boostorg/python · GitHub

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