Imported existing code

libraries/include/boost/spirit/home/qi/debug/simple_debug.hpp

@@ -0,0 +1,72 @@
+/*=============================================================================
+    Copyright (c) 2001-2009 Hartmut Kaiser
+
+    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)
+==============================================================================*/
+#if !defined(BOOST_SPIRIT_SIMPLE_DEBUG_NOV_12_2007_1155AM)
+#define BOOST_SPIRIT_SIMPLE_DEBUG_NOV_12_2007_1155AM
+
+#include <boost/spirit/home/qi/debug/detail/debug_handler.hpp>
+#include <boost/spirit/home/qi/debug/detail/print_node_info.hpp>
+#include <boost/spirit/home/qi/nonterminal/rule.hpp>
+#include <string>
+
+///////////////////////////////////////////////////////////////////////////////
+namespace boost { namespace spirit { namespace qi { namespace debug
+{
+    ///////////////////////////////////////////////////////////////////////////
+    //  Simple pre-parse hook allowing to print the context before a rule is
+    //  parsed.
+    template <typename Subject, typename Iterator>
+    inline bool
+    simple_pre_parse(std::string const& name, Subject subject,
+        unsigned level, Iterator first, Iterator const& last)
+    {
+        detail::print_node_info(false, level, false, name, first, last);
+        return true;
+    }
+
+    ///////////////////////////////////////////////////////////////////////////
+    //  Simple post-parse hook allowing to print the context after a rule is
+    //  parsed.
+    template <typename Subject, typename Iterator>
+    inline void
+    simple_post_parse(bool hit, std::string const& name, Subject subject,
+        unsigned level, Iterator first, Iterator const& last)
+    {
+        detail::print_node_info(hit, level, true, name, first, last);
+    }
+
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename Nonterminal>
+    inline void
+    enable_simple_debug_support(Nonterminal& r, bool trace)
+    {
+        typedef typename Nonterminal::iterator_type iterator_type;
+        typedef typename Nonterminal::pointer_type pointer_type;
+
+        typedef bool (*pre_parse_functor_type)(std::string const&,
+            pointer_type, unsigned, iterator_type, iterator_type const&);
+        typedef void (*post_parse_functor_type)(bool, std::string const&,
+            pointer_type, unsigned, iterator_type, iterator_type const&);
+
+        typedef
+            detail::debug_handler<
+                iterator_type,
+                typename Nonterminal::base_type::context_type,
+                typename Nonterminal::skipper_type,
+                pre_parse_functor_type,
+                post_parse_functor_type>
+        simple_debug_handler;
+
+        pre_parse_functor_type pre = 
+            &simple_pre_parse<pointer_type, iterator_type>;
+        post_parse_functor_type post = 
+            &simple_post_parse<pointer_type, iterator_type>;
+        decorate<simple_debug_handler>(r, r.name(), trace, pre, post);
+    }
+
+}}}}
+
+#endif