104 lines
3.8 KiB
Plaintext
104 lines
3.8 KiB
Plaintext
|
#ifndef BOOST_SERIALIZATION_STATIC_WARNING_HPP
|
||
|
|
#define BOOST_SERIALIZATION_STATIC_WARNING_HPP
|
||
|
|
|
||
|
|
// (C) Copyright Robert Ramey 2003. Jonathan Turkanis 2004.
|
||
|
|
// Use, modification and distribution is subject to the Boost Software
|
||
|
|
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
||
|
|
// MS compatible compilers support #pragma once
|
||
|
|
#if defined(_MSC_VER)
|
||
|
|
# pragma once
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
||
|
|
|
||
|
|
// See http://www.boost.org/libs/static_assert for documentation.
|
||
|
|
|
||
|
|
/*
|
||
|
|
Revision history:
|
||
|
|
15 June 2003 - Initial version.
|
||
|
|
31 March 2004 - improved diagnostic messages and portability
|
||
|
|
(Jonathan Turkanis)
|
||
|
|
03 April 2004 - works on VC6 at class and namespace scope
|
||
|
|
- ported to DigitalMars
|
||
|
|
- static warnings disabled by default; when enabled,
|
||
|
|
uses pragmas to enable required compiler warnings
|
||
|
|
on MSVC, Intel, Metrowerks and Borland 5.x.
|
||
|
|
(Jonathan Turkanis)
|
||
|
|
30 May 2004 - tweaked for msvc 7.1 and gcc 3.3
|
||
|
|
- static warnings ENabled by default; when enabled,
|
||
|
|
(Robert Ramey)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <boost/config.hpp>
|
||
|
|
|
||
|
|
//
|
||
|
|
// Implementation
|
||
|
|
// Makes use of the following warnings:
|
||
|
|
// 1. GCC prior to 3.3: division by zero.
|
||
|
|
// 2. BCC 6.0 preview: unreferenced local variable.
|
||
|
|
// 3. DigitalMars: returning address of local automatic variable.
|
||
|
|
// 4. VC6: class previously seen as struct (as in 'boost/mpl/print.hpp')
|
||
|
|
// 5. All others: deletion of pointer to incomplete type.
|
||
|
|
//
|
||
|
|
// The trick is to find code which produces warnings containing the name of
|
||
|
|
// a structure or variable. Details, with same numbering as above:
|
||
|
|
// 1. static_warning_impl<B>::value is zero iff B is false, so diving an int
|
||
|
|
// by this value generates a warning iff B is false.
|
||
|
|
// 2. static_warning_impl<B>::type has a constructor iff B is true, so an
|
||
|
|
// unreferenced variable of this type generates a warning iff B is false.
|
||
|
|
// 3. static_warning_impl<B>::type overloads operator& to return a dynamically
|
||
|
|
// allocated int pointer only is B is true, so returning the address of an
|
||
|
|
// automatic variable of this type generates a warning iff B is fasle.
|
||
|
|
// 4. static_warning_impl<B>::STATIC_WARNING is decalred as a struct iff B is
|
||
|
|
// false.
|
||
|
|
// 5. static_warning_impl<B>::type is incomplete iff B is false, so deleting a
|
||
|
|
// pointer to this type generates a warning iff B is false.
|
||
|
|
//
|
||
|
|
|
||
|
|
//------------------Enable selected warnings----------------------------------//
|
||
|
|
|
||
|
|
// Enable the warnings relied on by BOOST_STATIC_WARNING, where possible.
|
||
|
|
|
||
|
|
// 6. replaced implementation with one which depends solely on
|
||
|
|
// mpl::print<>. The previous one was found to fail for functions
|
||
|
|
// under recent versions of gcc and intel compilers - Robert Ramey
|
||
|
|
|
||
|
|
#include <boost/mpl/bool.hpp>
|
||
|
|
#include <boost/mpl/print.hpp>
|
||
|
|
#include <boost/mpl/eval_if.hpp>
|
||
|
|
#include <boost/mpl/bool_fwd.hpp>
|
||
|
|
#include <boost/static_assert.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
namespace serialization {
|
||
|
|
|
||
|
|
template<int L>
|
||
|
|
struct BOOST_SERIALIZATION_STATIC_WARNING_LINE{};
|
||
|
|
|
||
|
|
template<bool B, int L>
|
||
|
|
struct static_warning_test{
|
||
|
|
typename boost::mpl::eval_if_c<
|
||
|
|
B,
|
||
|
|
boost::mpl::true_,
|
||
|
|
typename boost::mpl::identity<
|
||
|
|
boost::mpl::print<
|
||
|
|
BOOST_SERIALIZATION_STATIC_WARNING_LINE<L>
|
||
|
|
>
|
||
|
|
>
|
||
|
|
>::type type;
|
||
|
|
};
|
||
|
|
|
||
|
|
template<int i>
|
||
|
|
struct BOOST_SERIALIZATION_SS {};
|
||
|
|
|
||
|
|
} // serialization
|
||
|
|
} // boost
|
||
|
|
|
||
|
|
#define BOOST_SERIALIZATION_BSW(B, L) \
|
||
|
|
typedef boost::serialization::BOOST_SERIALIZATION_SS< \
|
||
|
|
sizeof( boost::serialization::static_warning_test< B, L > ) \
|
||
|
|
> BOOST_JOIN(STATIC_WARNING_LINE, L) BOOST_ATTRIBUTE_UNUSED;
|
||
|
|
#define BOOST_STATIC_WARNING(B) BOOST_SERIALIZATION_BSW(B, __LINE__)
|
||
|
|
|
||
|
|
#endif // BOOST_SERIALIZATION_STATIC_WARNING_HPP
|