initial checkin

[SVN r11780]

include/boost/preprocessor/enum_shifted_params.hpp

@@ -0,0 +1,57 @@
+#ifndef BOOST_PREPROCESSOR_ENUM_SHIFTED_PARAMS_HPP
+#define BOOST_PREPROCESSOR_ENUM_SHIFTED_PARAMS_HPP
+
+//  Copyright (C) 2001
+//  Housemarque, Inc.
+//  http://www.housemarque.com
+//  
+//  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.
+
+/*! \file
+
+<a href="../../../../boost/preprocessor/enum_shifted_params.hpp">Click here to see the header.</a>
+*/
+
+#ifndef BOOST_PREPROCESSOR_CAT_HPP
+#  include <boost/preprocessor/cat.hpp>
+#endif
+#ifndef BOOST_PREPROCESSOR_COMMA_IF_HPP
+#  include <boost/preprocessor/comma_if.hpp>
+#endif
+#ifndef BOOST_PREPROCESSOR_DEC_HPP
+#  include <boost/preprocessor/dec.hpp>
+#endif
+#ifndef BOOST_PREPROCESSOR_INC_HPP
+#  include <boost/preprocessor/inc.hpp>
+#endif
+#ifndef BOOST_PREPROCESSOR_REPEAT_HPP
+#  include <boost/preprocessor/repeat.hpp>
+#endif
+
+//! Generates a comma separated list of shifted actual parameters.
+/*!
+In other words, expands to the sequence:
+
+<PRE>\verbatim
+  P##1, P##2, ..., P##N-1
+\endverbatim</PRE>
+
+NOTE: The implementation uses BOOST_PREPROCESSOR_REPEAT().
+
+RATIONALE:
+- This macro facilitates a typical usage of the library. Shifted parameter
+lists are common in template metaprograms. 
+- ENUM_SHIFTED_PARAMS must be tested so that the shifted range is shown to be
+correct.
+*/
+#define BOOST_PREPROCESSOR_ENUM_SHIFTED_PARAMS(N,P) BOOST_PREPROCESSOR_REPEAT(BOOST_PREPROCESSOR_DEC(N),BOOST_PREPROCESSOR_SHIFTED_PARAM,P)
+
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+#define BOOST_PREPROCESSOR_SHIFTED_PARAM(I,P) BOOST_PREPROCESSOR_COMMA_IF(I) BOOST_PREPROCESSOR_CAT(P,BOOST_PREPROCESSOR_INC(I))
+#endif /* DOXYGEN_SHOULD_SKIP_THIS */
+#endif