ceph/src/boost/libs/spirit/include/boost/spirit/home/karma/what.hpp

   1 //  Copyright (c) 2001-2011 Hartmut Kaiser
   2 //
   3 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #if !defined(BOOST_SPIRIT_WHAT_MAY_04_2007_0116PM)
   7 #define BOOST_SPIRIT_WHAT_MAY_04_2007_0116PM
   8
   9 #if defined(_MSC_VER)
  10 #pragma once
  11 #endif
  12
  13 #include <boost/mpl/assert.hpp>
  14 #include <boost/spirit/home/support/info.hpp>
  15 #include <boost/spirit/home/karma/meta_compiler.hpp>
  16
  17 namespace boost { namespace spirit { namespace karma
  18 {
  19     template <typename Expr>
  20     inline info what(Expr const& xpr)
  21     {
  22         // Report invalid expression error as early as possible.
  23         // If you got an error_invalid_expression
  24         // error message here, then the expression (expr) is not a
  25         // valid spirit karma expression.
  26         BOOST_SPIRIT_ASSERT_MATCH(karma::domain, Expr);
  27         return compile<karma::domain>(xpr).what(unused);
  28     }
  29
  30 }}}
  31
  32 #endif
  33