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

Add boost headers

+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+    Copyright (c) 2001-2011 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_TRACE_DECEMBER_06_2008_1102AM)
+#define BOOST_SPIRIT_SIMPLE_TRACE_DECEMBER_06_2008_1102AM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/support/unused.hpp>
+#include <boost/spirit/home/qi/nonterminal/debug_handler_state.hpp>
+#include <boost/fusion/include/out.hpp>
+#include <iostream>
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/and.hpp>
+#include <boost/type_traits/is_convertible.hpp>
+#include <boost/spirit/home/support/attributes.hpp>
+
+//  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 qi
+{
+    namespace detail
+    {
+        template<typename Char>
+        inline void token_printer(std::ostream& o, Char c)
+        {
+            // allow to customize the token printer routine
+            spirit::traits::print_token(o, c);
+        }
+    }
+
+    struct simple_trace
+    {
+        int& get_indent() const
+        {
+            static int indent = 0;
+            return indent;
+        }
+
+        void print_indent(int n) const
+        {
+            n *= BOOST_SPIRIT_DEBUG_INDENT;
+            for (int i = 0; i != n; ++i)
+                BOOST_SPIRIT_DEBUG_OUT << ' ';
+        }
+
+        template <typename Iterator>
+        void print_some(
+            char const* tag
+          , int /*indent*/
+          , Iterator first, Iterator const& last) const
+        {
+            print_indent(get_indent());
+            BOOST_SPIRIT_DEBUG_OUT << '<' << tag << '>';
+            int const n = BOOST_SPIRIT_DEBUG_PRINT_SOME;
+            for (int i = 0; first != last && i != n && *first; ++i, ++first)
+                detail::token_printer(BOOST_SPIRIT_DEBUG_OUT, *first);
+            BOOST_SPIRIT_DEBUG_OUT << "</" << tag << '>' << std::endl;
+
+            // $$$ FIXME convert invalid xml characters (e.g. '<') to valid
+            // character entities. $$$
+        }
+
+        template <typename Iterator, typename Context, typename State>
+        void operator()(
+            Iterator const& first
+          , Iterator const& last
+          , Context const& context
+          , State state
+          , std::string const& rule_name) const
+        {
+            switch (state)
+            {
+                case pre_parse:
+                    print_indent(get_indent()++);
+                    BOOST_SPIRIT_DEBUG_OUT
+                        << '<' << rule_name << '>'
+                        << std::endl;
+                    print_some("try", get_indent(), first, last);
+                    break;
+                case successful_parse:
+                    print_some("success", get_indent(), first, last);
+                    print_indent(get_indent());
+                    BOOST_SPIRIT_DEBUG_OUT
+                        << "<attributes>";
+                    traits::print_attribute(
+                        BOOST_SPIRIT_DEBUG_OUT,
+                        context.attributes
+                    );
+                    BOOST_SPIRIT_DEBUG_OUT
+                        << "</attributes>";
+                    if (!fusion::empty(context.locals))
+                        BOOST_SPIRIT_DEBUG_OUT
+                            << "<locals>"
+                            << context.locals
+                            << "</locals>";
+                    BOOST_SPIRIT_DEBUG_OUT << std::endl;
+                    print_indent(--get_indent());
+                    BOOST_SPIRIT_DEBUG_OUT
+                        << "</" << rule_name << '>'
+                        << std::endl;
+                    break;
+                case failed_parse:
+                    print_indent(get_indent());
+                    BOOST_SPIRIT_DEBUG_OUT << "<fail/>" << std::endl;
+                    print_indent(--get_indent());
+                    BOOST_SPIRIT_DEBUG_OUT
+                        << "</" << rule_name << '>'
+                        << std::endl;
+                    break;
+            }
+        }
+    };
+}}}
+
+#endif