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

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Joel de Guzman
   3
   4     Distributed under the Boost Software License, Version 1.0. (See accompanying
   5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 =============================================================================*/
   7 #if !defined(BOOST_SPIRIT_WHAT_APRIL_21_2007_0732AM)
   8 #define BOOST_SPIRIT_WHAT_APRIL_21_2007_0732AM
   9
  10 #if defined(_MSC_VER)
  11 #pragma once
  12 #endif
  13
  14 #include <boost/mpl/assert.hpp>
  15 #include <boost/spirit/home/support/info.hpp>
  16 #include <boost/spirit/home/qi/meta_compiler.hpp>
  17
  18 namespace boost { namespace spirit { namespace qi
  19 {
  20     template <typename Expr>
  21     inline info what(Expr const& expr)
  22     {
  23         // Report invalid expression error as early as possible.
  24         // If you got an error_expr_is_not_convertible_to_a_parser
  25         // error message here, then the expression (expr) is not a
  26         // valid spirit qi expression.
  27         BOOST_SPIRIT_ASSERT_MATCH(qi::domain, Expr);
  28         return compile<qi::domain>(expr).what(unused);
  29     }
  30 }}}
  31
  32 #endif
  33