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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 |