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/Src/Dependencies/Boost/boost/spirit/home/karma/what.hpp

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C++ Header | 33 lines | 18 code | 7 blank | 8 comment | 0 complexity | 91dda41400ee4df6394e27cbf47092c7 MD5 | raw file
 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
17namespace 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