comparison DEPENDENCIES/generic/include/boost/spirit/home/karma/nonterminal/simple_trace.hpp @ 16:2665513ce2d3

Add boost headers

+//  Copyright (c) 2001-2011 Hartmut Kaiser
+//  Copyright (c) 2001-2011 Joel de Guzman
+// 
+//  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_KARMA_SIMPLE_TRACE_APR_21_2010_0155PM)
+#define BOOST_SPIRIT_KARMA_SIMPLE_TRACE_APR_21_2010_0155PM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/support/unused.hpp>
+#include <boost/spirit/home/karma/nonterminal/debug_handler_state.hpp>
+#include <boost/fusion/include/out.hpp>
+#include <iostream>
+
+//  The stream to use for debug output
+#if !defined(BOOST_SPIRIT_DEBUG_OUT)
+#define BOOST_SPIRIT_DEBUG_OUT std::cerr
+#endif
+
+//  number of tokens to print while debugging
+#if !defined(BOOST_SPIRIT_DEBUG_PRINT_SOME)
+#define BOOST_SPIRIT_DEBUG_PRINT_SOME 20
+#endif
+
+//  number of spaces to indent
+#if !defined(BOOST_SPIRIT_DEBUG_INDENT)
+#define BOOST_SPIRIT_DEBUG_INDENT 2
+#endif
+
+namespace boost { namespace spirit { namespace karma
+{
+    struct simple_trace
+    {
+        int& get_indent() const
+        {
+            static int indent = 0;
+            return indent;
+        }
+
+        void print_indent() const
+        {
+            int n = get_indent();
+            n *= BOOST_SPIRIT_DEBUG_INDENT;
+            for (int i = 0; i != n; ++i)
+                BOOST_SPIRIT_DEBUG_OUT << ' ';
+        }
+
+        template <typename Buffer>
+        void print_some(char const* tag, Buffer const& buffer) const
+        {
+            print_indent();
+            BOOST_SPIRIT_DEBUG_OUT << '<' << tag << '>' << std::flush;
+            {
+                std::ostreambuf_iterator<char> out(BOOST_SPIRIT_DEBUG_OUT);
+                buffer.buffer_copy_to(out, BOOST_SPIRIT_DEBUG_PRINT_SOME);
+            }
+            BOOST_SPIRIT_DEBUG_OUT << "</" << tag << '>' << std::endl;
+        }
+
+        template <typename OutputIterator, typename Context, typename State
+          , typename Buffer>
+        void operator()(
+            OutputIterator&, Context const& context
+          , State state, std::string const& rule_name
+          , Buffer const& buffer) const
+        {
+            switch (state)
+            {
+                case pre_generate:
+                    print_indent();
+                    ++get_indent();
+                    BOOST_SPIRIT_DEBUG_OUT
+                        << '<' << rule_name << '>' << std::endl;
+                    print_indent();
+                    ++get_indent();
+                    BOOST_SPIRIT_DEBUG_OUT << "<try>" << std::endl;;
+                    print_indent();
+                    BOOST_SPIRIT_DEBUG_OUT << "<attributes>";
+                    traits::print_attribute(
+                        BOOST_SPIRIT_DEBUG_OUT,
+                        context.attributes
+                    );
+                    BOOST_SPIRIT_DEBUG_OUT << "</attributes>" << std::endl;
+                    if (!fusion::empty(context.locals))
+                    {
+                        print_indent();
+                        BOOST_SPIRIT_DEBUG_OUT
+                            << "<locals>" << context.locals << "</locals>"
+                            << std::endl;
+                    }
+                    --get_indent();
+                    print_indent();
+                    BOOST_SPIRIT_DEBUG_OUT << "</try>" << std::endl;;
+                    break;
+
+                case successful_generate:
+                    print_indent();
+                    ++get_indent();
+                    BOOST_SPIRIT_DEBUG_OUT << "<success>" << std::endl;
+                    print_some("result", buffer);
+                    if (!fusion::empty(context.locals))
+                    {
+                        print_indent();
+                        BOOST_SPIRIT_DEBUG_OUT
+                            << "<locals>" << context.locals << "</locals>"
+                            << std::endl;
+                    }
+                    --get_indent();
+                    print_indent();
+                    BOOST_SPIRIT_DEBUG_OUT << "</success>" << std::endl;
+                    --get_indent();
+                    print_indent();
+                    BOOST_SPIRIT_DEBUG_OUT 
+                        << "</" << rule_name << '>' << std::endl;
+                    break;
+
+                case failed_generate:
+                    print_indent();
+                    BOOST_SPIRIT_DEBUG_OUT << "<fail/>" << std::endl;
+                    --get_indent();
+                    print_indent();
+                    BOOST_SPIRIT_DEBUG_OUT 
+                        << "</" << rule_name << '>' << std::endl;
+                    break;
+            }
+        }
+    };
+}}}
+
+#endif