comparison DEPENDENCIES/generic/include/boost/log/support/spirit_classic.hpp @ 16:2665513ce2d3

Add boost headers

+/*
+ *          Copyright Andrey Semashev 2007 - 2013.
+ * Distributed under the Boost Software License, Version 1.0.
+ *    (See accompanying file LICENSE_1_0.txt or copy at
+ *          http://www.boost.org/LICENSE_1_0.txt)
+ */
+/*!
+ * \file   support/spirit_classic.hpp
+ * \author Andrey Semashev
+ * \date   19.07.2009
+ *
+ * This header enables Boost.Spirit (classic) support for Boost.Log.
+ */
+
+#ifndef BOOST_LOG_SUPPORT_SPIRIT_CLASSIC_HPP_INCLUDED_
+#define BOOST_LOG_SUPPORT_SPIRIT_CLASSIC_HPP_INCLUDED_
+
+#include <boost/mpl/bool.hpp>
+#include <boost/log/detail/config.hpp>
+#include <boost/log/utility/functional/matches.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+#if !defined(BOOST_LOG_NO_THREADS) && !defined(BOOST_SPIRIT_THREADSAFE) && !defined(BOOST_LOG_DOXYGEN_PASS)
+/*
+ * As Boost.Log filters may be called in multiple threads concurrently,
+ * this may lead to using Boost.Spirit parsers in a multithreaded context.
+ * In order to protect parsers properly, BOOST_SPIRIT_THREADSAFE macro should
+ * be defined.
+ *
+ * If we got here, it means that the user did not define that macro and we
+ * have to define it ourselves. However, it may also lead to ODR violations
+ * or even total ignorance of this macro, if the user has included Boost.Spirit
+ * headers before including this header, or uses Boost.Spirit without the macro
+ * in other translation units. The only reliable way to settle this problem is to
+ * define the macro for the whole project (i.e. all translation units).
+ */
+#warning Boost.Log: Boost.Spirit requires BOOST_SPIRIT_THREADSAFE macro to be defined if parsers are used in a multithreaded context. It is strongly recommended to define this macro project-wide.
+#define BOOST_SPIRIT_THREADSAFE 1
+#endif // !defined(BOOST_LOG_NO_THREADS) && !defined(BOOST_SPIRIT_THREADSAFE)
+
+#include <boost/spirit/include/classic_parser.hpp>
+
+#include <boost/log/detail/header.hpp>
+
+namespace boost {
+
+BOOST_LOG_OPEN_NAMESPACE
+
+namespace aux {
+
+//! The trait verifies if the type can be converted to a Boost.Spirit (classic) parser
+template< typename T >
+struct is_spirit_classic_parser< T, true >
+{
+private:
+    typedef char yes_type;
+    struct no_type { char dummy[2]; };
+
+    template< typename U >
+    static yes_type check_spirit_classic_parser(spirit::classic::parser< U > const&);
+    static no_type check_spirit_classic_parser(...);
+    static T& get_T();
+
+public:
+    enum { value = sizeof(check_spirit_classic_parser(get_T())) == sizeof(yes_type) };
+    typedef mpl::bool_< value > type;
+};
+
+//! The matching functor implementation
+template< >
+struct matches_fun_impl< boost_spirit_classic_expression_tag >
+{
+    template< typename StringT, typename ParserT >
+    static bool matches(
+        StringT const& str,
+        ParserT const& expr)
+    {
+        typedef typename StringT::const_iterator const_iterator;
+        spirit::classic::parse_info< const_iterator > info =
+            spirit::classic::parse(str.begin(), str.end(), expr);
+        return info.full;
+    }
+};
+
+} // namespace aux
+
+BOOST_LOG_CLOSE_NAMESPACE // namespace log
+
+} // namespace boost
+
+#include <boost/log/detail/footer.hpp>
+
+#endif // BOOST_LOG_SUPPORT_SPIRIT_CLASSIC_HPP_INCLUDED_