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////////////////////////////////////////////////////////////////////////////////
// The Loki Library
// Copyright (c) 2001 by Andrei Alexandrescu
// This code accompanies the book:
// Alexandrescu, Andrei. "Modern C++ Design: Generic Programming and Design
// Patterns Applied". Copyright (c) 2001. Addison-Wesley.
// Permission to use, copy, modify, distribute and sell this software for any
// purpose is hereby granted without fee, provided that the above copyright
// notice appear in all copies and that both that copyright notice and this
// permission notice appear in supporting documentation.
// The author or Addison-Wesley Longman make no representations about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
////////////////////////////////////////////////////////////////////////////////
// Last update: June 20, 2001
#ifndef LOKI_STATIC_CHECK_INC_
#define LOKI_STATIC_CHECK_INC_
// $Header: /cvsroot/loki-lib/loki/include/loki/static_check.h,v 1.3 2006/01/16 19:05:09 rich_sposato Exp $
namespace Loki
{
////////////////////////////////////////////////////////////////////////////////
// Helper structure for the STATIC_CHECK macro
////////////////////////////////////////////////////////////////////////////////
template<int> struct CompileTimeError;
template<> struct CompileTimeError<true> {};
}
////////////////////////////////////////////////////////////////////////////////
// macro STATIC_CHECK
// Invocation: STATIC_CHECK(expr, id)
// where:
// expr is a compile-time integral or pointer expression
// id is a C++ identifier that does not need to be defined
// If expr is zero, id will appear in a compile-time error message.
////////////////////////////////////////////////////////////////////////////////
#define LOKI_STATIC_CHECK(expr, msg) \
{ Loki::CompileTimeError<((expr) != 0)> ERROR_##msg; (void)ERROR_##msg; }
////////////////////////////////////////////////////////////////////////////////
// Change log:
// March 20, 2001: add extra parens to STATIC_CHECK - it looked like a fun
// definition
// June 20, 2001: ported by Nick Thurn to gcc 2.95.3. Kudos, Nick!!!
////////////////////////////////////////////////////////////////////////////////
#endif // STATIC_CHECK_INC_
// $Log: static_check.h,v $
// Revision 1.3 2006/01/16 19:05:09 rich_sposato
// Added cvs keywords.
//
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