forgot a file

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2041 a592a061-630c-0410-9148-cb99ea01b6c8

boost/boost/static_assert.hpp

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+//  (C) Copyright John Maddock 2000.
+//  Permission to copy, use, modify, sell and
+//  distribute this software is granted provided this copyright notice appears
+//  in all copies. This software is provided "as is" without express or implied
+//  warranty, and with no claim as to its suitability for any purpose.
+
+//  See http://www.boost.org for most recent version including documentation.
+
+/*
+ Revision history:
+ 	02 August 2000
+ 		Initial version.
+*/
+
+#ifndef BOOST_STATIC_ASSERT_HPP
+#define BOOST_STATIC_ASSERT_HPP
+
+#include <boost/config.hpp>
+
+#ifdef __BORLANDC__
+//
+// workaround for buggy integral-constant expression support:
+#define BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS
+#endif
+
+namespace boost{
+
+// HP aCC cannot deal with missing names for template value parameters
+template <bool x> struct STATIC_ASSERTION_FAILURE;
+
+template <> struct STATIC_ASSERTION_FAILURE<true>{};
+
+// HP aCC cannot deal with missing names for template value parameters
+template<int x> struct static_assert_test{};
+
+}
+
+//
+// Implicit instantiation requires that all member declarations be
+// instantiated, but that the definitions are *not* instantiated.
+//
+// It's not particularly clear how this applies to enum's or typedefs;
+// both are described as declarations [7.1.3] and [7.2] in the standard,
+// however some compilers use "delayed evaluation" of one or more of
+// these when implicitly instantiating templates.  We use typedef declarations
+// by default, but try defining BOOST_USE_ENUM_STATIC_ASSERT if the enum
+// version gets better results from your compiler...
+//
+// Implementation:
+// Both of these versions rely on sizeof(incomplete_type) generating an error
+// message containing the name of the incomplete type.  We use
+// "STATIC_ASSERTION_FAILURE" as the type name here to generate
+// an eye catching error message.  The result of the sizeof expression is either
+// used as an enum initialiser, or as a template argument depending which version
+// is in use...
+//
+#if !defined(BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS) && !defined(__MWERKS__)
+#ifndef BOOST_MSVC
+#define BOOST_STATIC_ASSERT( B ) \
+   typedef ::boost::static_assert_test<\
+      sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)>\
+         BOOST_ASSERT_JOIN(boost_static_assert_typedef_, __LINE__)
+#else
+// __LINE__ macro broken when -ZI is used see Q199057
+// fortunately MSVC ignores duplicate typedef's.
+#define BOOST_STATIC_ASSERT( B ) \
+   typedef ::boost::static_assert_test<\
+      sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)\
+      > boost_static_assert_typedef_
+#endif
+#else
+// alternative enum based implementation:
+#define BOOST_STATIC_ASSERT( B ) \
+   enum { BOOST_ASSERT_JOIN(boost_static_assert_enum_, __LINE__) \
+      = sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >) }
+#endif
+
+//
+// The following piece of macro magic joins the two 
+// arguments together, even when one of the arguments is
+// itself a macro (see 16.3.1 in C++ standard).  The key
+// is that macro expansion of macro arguments does not
+// occur in BOOST_DO_ASSERT_JOIN but does in BOOST_ASSERT_JOIN
+// provided it is called from within another macro.
+#define BOOST_ASSERT_JOIN( X, Y ) BOOST_DO_ASSERT_JOIN( X, Y )
+#define BOOST_DO_ASSERT_JOIN( X, Y ) X##Y
+
+#endif // BOOST_STATIC_ASSERT_HPP
+
+
+
+