boostorg-python/src/errors.cpp at develop · InfinityOfficialNetwork/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)

#ifndef BOOST_PYTHON_SOURCE

# define BOOST_PYTHON_SOURCE

#endif

#include <boost/python/errors.hpp>

#include <boost/cast.hpp>

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

namespace boost { namespace python {

error_already_set::~error_already_set() {}

// IMPORTANT: this function may only be called from within a catch block!

BOOST_PYTHON_DECL bool handle_exception_impl(function0<void> f)

{

try

{

if (detail::exception_handler::chain)

return detail::exception_handler::chain->handle(f);

f();

return false;

}

catch(const boost::python::error_already_set&)

{

// The python error reporting has already been handled.

}

catch(const std::bad_alloc&)

{

PyErr_NoMemory();

}

catch(const bad_numeric_cast& x)

{

PyErr_SetString(PyExc_OverflowError, x.what());

}

catch(const std::out_of_range& x)

{

PyErr_SetString(PyExc_IndexError, x.what());

}

catch(const std::invalid_argument& x)

{

PyErr_SetString(PyExc_ValueError, x.what());

}

catch(const std::exception& x)

{

PyErr_SetString(PyExc_RuntimeError, x.what());

}

catch(...)

{

PyErr_SetString(PyExc_RuntimeError, "unidentifiable C++ exception");

}

return true;

}

void BOOST_PYTHON_DECL throw_error_already_set()

{

throw error_already_set();

}

namespace detail {

bool exception_handler::operator()(function0<void> const& f) const

{

if (m_next)

{

return m_next->handle(f);

}

else

{

f();

return false;

}

exception_handler::exception_handler(handler_function const& impl)

: m_impl(impl)

, m_next(0)

{

if (chain != 0)

tail->m_next = this;

else

chain = this;

tail = this;

}

exception_handler* exception_handler::chain;

exception_handler* exception_handler::tail;

BOOST_PYTHON_DECL void register_exception_handler(handler_function const& f)

{

// the constructor links the new object into a handler chain, so

// this object isn't actaully leaked (until, of course, the

// interpreter exits).

new exception_handler(f);

}

} // namespace boost::python::detail

}} // namespace boost::python

boostorg-python/src/errors.cpp at develop · InfinityOfficialNetwork/boostorg-python · GitHub

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