Imported Upstream version 1.57.0upstream/1.57.0

1 files changed, 0 insertions, 1494 deletions

diff --git a/tools/wave/trace_macro_expansion.hpp b/tools/wave/trace_macro_expansion.hpp
deleted file mode 100644
index a6e7c31526..0000000000
--- a/tools/wave/trace_macro_expansion.hpp
+++ /dev/null
@@ -1,1494 +0,0 @@
-/*=============================================================================
-    Boost.Wave: A Standard compliant C++ preprocessor library
-    http://www.boost.org/
-
-    Copyright (c) 2001-2012 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(TRACE_MACRO_EXPANSION_HPP_D8469318_8407_4B9D_A19F_13CA60C1661F_INCLUDED)
-#define TRACE_MACRO_EXPANSION_HPP_D8469318_8407_4B9D_A19F_13CA60C1661F_INCLUDED
-
-#include <cstdio>
-#include <cstdlib>
-#include <ctime>
-
-#include <ostream>
-#include <string>
-#include <stack>
-#include <set>
-
-#include <boost/assert.hpp>
-#include <boost/config.hpp>
-#include <boost/filesystem/path.hpp>
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/convenience.hpp>
-
-#include <boost/wave/token_ids.hpp>
-#include <boost/wave/util/macro_helpers.hpp>
-#include <boost/wave/util/filesystem_compatibility.hpp>
-#include <boost/wave/preprocessing_hooks.hpp>
-#include <boost/wave/whitespace_handling.hpp>
-#include <boost/wave/language_support.hpp>
-#include <boost/wave/cpp_exceptions.hpp>
-
-#include "stop_watch.hpp"
-
-#ifdef BOOST_NO_STRINGSTREAM
-#include <strstream>
-#define BOOST_WAVE_OSSTREAM std::ostrstream
-std::string BOOST_WAVE_GETSTRING(std::ostrstream& ss)
-{
-    ss << std::ends;
-    std::string rval = ss.str();
-    ss.freeze(false);
-    return rval;
-}
-#else
-#include <sstream>
-#define BOOST_WAVE_GETSTRING(ss) ss.str()
-#define BOOST_WAVE_OSSTREAM std::ostringstream
-#endif
-
-//  trace_flags:  enable single tracing functionality
-enum trace_flags {
-    trace_nothing = 0,      // disable tracing
-    trace_macros = 1,       // enable macro tracing
-    trace_macro_counts = 2, // enable invocation counting
-    trace_includes = 4,     // enable include file tracing
-    trace_guards = 8        // enable include guard tracing
-};
-
-///////////////////////////////////////////////////////////////////////////////
-//
-//  Special error thrown whenever the #pragma wave system() directive is
-//  disabled
-//
-///////////////////////////////////////////////////////////////////////////////
-class bad_pragma_exception :
-    public boost::wave::preprocess_exception
-{
-public:
-    enum error_code {
-        pragma_system_not_enabled =
-            boost::wave::preprocess_exception::last_error_number + 1,
-        pragma_mismatched_push_pop,
-    };
-
-    bad_pragma_exception(char const *what_, error_code code, int line_,
-        int column_, char const *filename_) throw()
-    :   boost::wave::preprocess_exception(what_,
-            (boost::wave::preprocess_exception::error_code)code, line_,
-            column_, filename_)
-    {
-    }
-    ~bad_pragma_exception() throw() {}
-
-    virtual char const *what() const throw()
-    {
-        return "boost::wave::bad_pragma_exception";
-    }
-    virtual bool is_recoverable() const throw()
-    {
-        return true;
-    }
-    virtual int get_severity() const throw()
-    {
-        return boost::wave::util::severity_remark;
-    }
-
-    static char const *error_text(int code)
-    {
-        switch(code) {
-        case pragma_system_not_enabled:
-            return "the directive '#pragma wave system()' was not enabled, use the "
-                   "-x command line argument to enable the execution of";
-
-        case pragma_mismatched_push_pop:
-            return "unbalanced #pragma push/pop in input file(s) for option";
-        }
-        return "Unknown exception";
-    }
-    static boost::wave::util::severity severity_level(int code)
-    {
-        switch(code) {
-        case pragma_system_not_enabled:
-            return boost::wave::util::severity_remark;
-
-        case pragma_mismatched_push_pop:
-            return boost::wave::util::severity_error;
-        }
-        return boost::wave::util::severity_fatal;
-    }
-    static char const *severity_text(int code)
-    {
-        return boost::wave::util::get_severity(boost::wave::util::severity_remark);
-    }
-};
-
-///////////////////////////////////////////////////////////////////////////////
-//
-//  The trace_macro_expansion policy is used to trace the macro expansion of
-//  macros whenever it is requested from inside the input stream to preprocess
-//  through the '#pragma wave_option(trace: enable)' directive. The macro
-//  tracing is disabled with the help of a '#pragma wave_option(trace: disable)'
-//  directive.
-//
-//  This policy type is used as a template parameter to the boost::wave::context<>
-//  object.
-//
-///////////////////////////////////////////////////////////////////////////////
-template <typename TokenT>
-class trace_macro_expansion
-:   public boost::wave::context_policies::eat_whitespace<TokenT>
-{
-    typedef boost::wave::context_policies::eat_whitespace<TokenT> base_type;
-
-public:
-    trace_macro_expansion(
-            bool preserve_whitespace_, bool preserve_bol_whitespace_,
-            std::ofstream &output_, std::ostream &tracestrm_,
-            std::ostream &includestrm_, std::ostream &guardstrm_,
-            trace_flags flags_, bool enable_system_command_,
-            bool& generate_output_, std::string const& default_outfile_)
-    :   outputstrm(output_), tracestrm(tracestrm_),
-        includestrm(includestrm_), guardstrm(guardstrm_),
-        level(0), flags(flags_), logging_flags(trace_nothing),
-        enable_system_command(enable_system_command_),
-        preserve_whitespace(preserve_whitespace_),
-        preserve_bol_whitespace(preserve_bol_whitespace_),
-        generate_output(generate_output_),
-        default_outfile(default_outfile_),
-        emit_relative_filenames(false)
-    {
-    }
-    ~trace_macro_expansion()
-    {
-    }
-
-    void enable_macro_counting()
-    {
-        logging_flags = trace_flags(logging_flags | trace_macro_counts);
-    }
-    std::map<std::string, std::size_t> const& get_macro_counts() const
-    {
-        return counts;
-    }
-
-    void enable_relative_names_in_line_directives(bool flag)
-    {
-        emit_relative_filenames = flag;
-    }
-    bool enable_relative_names_in_line_directives() const
-    {
-        return emit_relative_filenames;
-    }
-
-    // add a macro name, which should not be expanded at all (left untouched)
-    void add_noexpandmacro(std::string const& name)
-    {
-        noexpandmacros.insert(name);
-    }
-
-    void set_license_info(std::string const& info)
-    {
-        license_info = info;
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'expanding_function_like_macro' is called whenever a
-    //  function-like macro is to be expanded.
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'macrodef' marks the position, where the macro to expand
-    //  is defined.
-    //
-    //  The parameter 'formal_args' holds the formal arguments used during the
-    //  definition of the macro.
-    //
-    //  The parameter 'definition' holds the macro definition for the macro to
-    //  trace.
-    //
-    //  The parameter 'macro_call' marks the position, where this macro invoked.
-    //
-    //  The parameter 'arguments' holds the macro arguments used during the
-    //  invocation of the macro
-    //
-    //  The parameters 'seqstart' and 'seqend' point into the input token
-    //  stream allowing to access the whole token sequence comprising the macro
-    //  invocation (starting with the opening parenthesis and ending after the
-    //  closing one).
-    //
-    //  The return value defines whether the corresponding macro will be
-    //  expanded (return false) or will be copied to the output (return true).
-    //  Note: the whole argument list is copied unchanged to the output as well
-    //        without any further processing.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
-    // old signature
-    template <typename ContainerT>
-    void expanding_function_like_macro(
-        TokenT const &macrodef, std::vector<TokenT> const &formal_args,
-        ContainerT const &definition,
-        TokenT const &macrocall, std::vector<ContainerT> const &arguments)
-    {
-        if (enabled_macro_counting())
-            count_invocation(macrodef.get_value().c_str());
-
-        if (!enabled_macro_tracing())
-            return;
-#else
-    // new signature
-    template <typename ContextT, typename ContainerT, typename IteratorT>
-    bool
-    expanding_function_like_macro(ContextT const& ctx,
-        TokenT const &macrodef, std::vector<TokenT> const &formal_args,
-        ContainerT const &definition,
-        TokenT const &macrocall, std::vector<ContainerT> const &arguments,
-        IteratorT const& seqstart, IteratorT const& seqend)
-    {
-        if (enabled_macro_counting() || !noexpandmacros.empty()) {
-            std::string name (macrodef.get_value().c_str());
-
-            if (noexpandmacros.find(name.c_str()) != noexpandmacros.end())
-                return true;    // do not expand this macro
-
-            if (enabled_macro_counting())
-                count_invocation(name.c_str());
-        }
-
-        if (!enabled_macro_tracing())
-            return false;
-#endif
-        if (0 == get_level()) {
-        // output header line
-        BOOST_WAVE_OSSTREAM stream;
-
-            stream
-                << macrocall.get_position() << ": "
-                << macrocall.get_value() << "(";
-
-        // argument list
-            for (typename ContainerT::size_type i = 0; i < arguments.size(); ++i) {
-                stream << boost::wave::util::impl::as_string(arguments[i]);
-                if (i < arguments.size()-1)
-                    stream << ", ";
-            }
-            stream << ")" << std::endl;
-            output(BOOST_WAVE_GETSTRING(stream));
-            increment_level();
-        }
-
-    // output definition reference
-        {
-        BOOST_WAVE_OSSTREAM stream;
-
-            stream
-                << macrodef.get_position() << ": see macro definition: "
-                << macrodef.get_value() << "(";
-
-        // formal argument list
-            for (typename std::vector<TokenT>::size_type i = 0;
-                i < formal_args.size(); ++i)
-            {
-                stream << formal_args[i].get_value();
-                if (i < formal_args.size()-1)
-                    stream << ", ";
-            }
-            stream << ")" << std::endl;
-            output(BOOST_WAVE_GETSTRING(stream));
-        }
-
-        if (formal_args.size() > 0) {
-        // map formal and real arguments
-            open_trace_body("invoked with\n");
-            for (typename std::vector<TokenT>::size_type j = 0;
-                j < formal_args.size(); ++j)
-            {
-                using namespace boost::wave;
-
-                BOOST_WAVE_OSSTREAM stream;
-                stream << formal_args[j].get_value() << " = ";
-#if BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS != 0
-                if (T_ELLIPSIS == token_id(formal_args[j])) {
-                // ellipsis
-                    for (typename ContainerT::size_type k = j;
-                        k < arguments.size(); ++k)
-                    {
-                        stream << boost::wave::util::impl::as_string(arguments[k]);
-                        if (k < arguments.size()-1)
-                            stream << ", ";
-                    }
-                }
-                else
-#endif
-                {
-                    stream << boost::wave::util::impl::as_string(arguments[j]);
-                }
-                stream << std::endl;
-                output(BOOST_WAVE_GETSTRING(stream));
-            }
-            close_trace_body();
-        }
-        open_trace_body();
-
-#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS == 0
-        return false;
-#endif
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'expanding_object_like_macro' is called whenever a
-    //  object-like macro is to be expanded .
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'macrodef' marks the position, where the macro to expand
-    //  is defined.
-    //
-    //  The definition 'definition' holds the macro definition for the macro to
-    //  trace.
-    //
-    //  The parameter 'macrocall' marks the position, where this macro invoked.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
-    // old signature
-    template <typename ContainerT>
-    void expanding_object_like_macro(TokenT const &macrodef,
-        ContainerT const &definition, TokenT const &macrocall)
-    {
-        if (enabled_macro_counting())
-            count_invocation(macrodef.get_value().c_str());
-
-        if (!enabled_macro_tracing())
-            return;
-#else
-    // new signature
-    template <typename ContextT, typename ContainerT>
-    bool
-    expanding_object_like_macro(ContextT const& ctx,
-        TokenT const &macrodef, ContainerT const &definition,
-        TokenT const &macrocall)
-    {
-        if (enabled_macro_counting() || !noexpandmacros.empty()) {
-            std::string name (macrodef.get_value().c_str());
-
-            if (noexpandmacros.find(name.c_str()) != noexpandmacros.end())
-                return true;    // do not expand this macro
-
-            if (enabled_macro_counting())
-                count_invocation(name.c_str());
-        }
-
-        if (!enabled_macro_tracing())
-            return false;
-#endif
-        if (0 == get_level()) {
-        // output header line
-        BOOST_WAVE_OSSTREAM stream;
-
-            stream
-                << macrocall.get_position() << ": "
-                << macrocall.get_value() << std::endl;
-            output(BOOST_WAVE_GETSTRING(stream));
-            increment_level();
-        }
-
-    // output definition reference
-        {
-        BOOST_WAVE_OSSTREAM stream;
-
-            stream
-                << macrodef.get_position() << ": see macro definition: "
-                << macrodef.get_value() << std::endl;
-            output(BOOST_WAVE_GETSTRING(stream));
-        }
-        open_trace_body();
-
-#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS == 0
-        return false;
-#endif
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'expanded_macro' is called whenever the expansion of a
-    //  macro is finished but before the rescanning process starts.
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'result' contains the token sequence generated as the
-    //  result of the macro expansion.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
-    // old signature
-    template <typename ContainerT>
-    void expanded_macro(ContainerT const &result)
-#else
-    // new signature
-    template <typename ContextT, typename ContainerT>
-    void expanded_macro(ContextT const& ctx,ContainerT const &result)
-#endif
-    {
-        if (!enabled_macro_tracing()) return;
-
-        BOOST_WAVE_OSSTREAM stream;
-        stream << boost::wave::util::impl::as_string(result) << std::endl;
-        output(BOOST_WAVE_GETSTRING(stream));
-
-        open_trace_body("rescanning\n");
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'rescanned_macro' is called whenever the rescanning of a
-    //  macro is finished.
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'result' contains the token sequence generated as the
-    //  result of the rescanning.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
-    // old signature
-    template <typename ContainerT>
-    void rescanned_macro(ContainerT const &result)
-#else
-    // new signature
-    template <typename ContextT, typename ContainerT>
-    void rescanned_macro(ContextT const& ctx,ContainerT const &result)
-#endif
-    {
-        if (!enabled_macro_tracing() || get_level() == 0)
-            return;
-
-        BOOST_WAVE_OSSTREAM stream;
-        stream << boost::wave::util::impl::as_string(result) << std::endl;
-        output(BOOST_WAVE_GETSTRING(stream));
-        close_trace_body();
-        close_trace_body();
-
-        if (1 == get_level())
-            decrement_level();
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'interpret_pragma' is called whenever a #pragma command
-    //  directive is found which isn't known to the core Wave library, where
-    //  command is the value defined as the BOOST_WAVE_PRAGMA_KEYWORD constant
-    //  which defaults to "wave".
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'pending' may be used to push tokens back into the input
-    //  stream, which are to be used as the replacement text for the whole
-    //  #pragma directive.
-    //
-    //  The parameter 'option' contains the name of the interpreted pragma.
-    //
-    //  The parameter 'values' holds the values of the parameter provided to
-    //  the pragma operator.
-    //
-    //  The parameter 'act_token' contains the actual #pragma token, which may
-    //  be used for error output.
-    //
-    //  If the return value is 'false', the whole #pragma directive is
-    //  interpreted as unknown and a corresponding error message is issued. A
-    //  return value of 'true' signs a successful interpretation of the given
-    //  #pragma.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-    template <typename ContextT, typename ContainerT>
-    bool
-    interpret_pragma(ContextT &ctx, ContainerT &pending,
-        typename ContextT::token_type const &option, ContainerT const &valuetokens,
-        typename ContextT::token_type const &act_token)
-    {
-        typedef typename ContextT::token_type token_type;
-
-        ContainerT values(valuetokens);
-        boost::wave::util::impl::trim_sequence(values);    // trim whitespace
-
-        if (option.get_value() == "timer") {
-        // #pragma wave timer(value)
-            if (0 == values.size()) {
-            // no value means '1'
-                using namespace boost::wave;
-                timer(token_type(T_INTLIT, "1", act_token.get_position()));
-            }
-            else {
-                timer(values.front());
-            }
-            return true;
-        }
-        if (option.get_value() == "trace") {
-        // enable/disable tracing option
-            return interpret_pragma_trace(ctx, values, act_token);
-        }
-        if (option.get_value() == "system") {
-            if (!enable_system_command) {
-            // if the #pragma wave system() directive is not enabled, throw
-            // a corresponding error (actually its a remark),
-                typename ContextT::string_type msg(
-                    boost::wave::util::impl::as_string(values));
-                BOOST_WAVE_THROW_CTX(ctx, bad_pragma_exception,
-                    pragma_system_not_enabled,
-                    msg.c_str(), act_token.get_position());
-                return false;
-            }
-
-        // try to spawn the given argument as a system command and return the
-        // std::cout of this process as the replacement of this _Pragma
-            return interpret_pragma_system(ctx, pending, values, act_token);
-        }
-        if (option.get_value() == "stop") {
-        // stop the execution and output the argument
-            typename ContextT::string_type msg(
-                boost::wave::util::impl::as_string(values));
-            BOOST_WAVE_THROW_CTX(ctx, boost::wave::preprocess_exception,
-                error_directive, msg.c_str(), act_token.get_position());
-            return false;
-        }
-        if (option.get_value() == "option") {
-        // handle different options
-            return interpret_pragma_option(ctx, values, act_token);
-        }
-        return false;
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'emit_line_directive' is called whenever a #line directive
-    //  has to be emitted into the generated output.
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'pending' may be used to push tokens back into the input
-    //  stream, which are to be used instead of the default output generated
-    //  for the #line directive.
-    //
-    //  The parameter 'act_token' contains the actual #pragma token, which may
-    //  be used for error output. The line number stored in this token can be
-    //  used as the line number emitted as part of the #line directive.
-    //
-    //  If the return value is 'false', a default #line directive is emitted
-    //  by the library. A return value of 'true' will inhibit any further
-    //  actions, the tokens contained in 'pending' will be copied verbatim
-    //  to the output.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-    template <typename ContextT, typename ContainerT>
-    bool
-    emit_line_directive(ContextT const& ctx, ContainerT &pending,
-        typename ContextT::token_type const& act_token)
-    {
-        if (!need_emit_line_directives(ctx.get_language()) ||
-            !enable_relative_names_in_line_directives())
-        {
-            return false;
-        }
-
-    // emit a #line directive showing the relative filename instead
-    typename ContextT::position_type pos = act_token.get_position();
-    unsigned int column = 6;
-
-        typedef typename ContextT::token_type result_type;
-        using namespace boost::wave;
-
-        pos.set_column(1);
-        pending.push_back(result_type(T_PP_LINE, "#line", pos));
-
-        pos.set_column(column);      // account for '#line'
-        pending.push_back(result_type(T_SPACE, " ", pos));
-
-    // 21 is the max required size for a 64 bit integer represented as a
-    // string
-    char buffer[22];
-
-        using namespace std;    // for some systems sprintf is in namespace std
-        sprintf (buffer, "%d", pos.get_line());
-
-        pos.set_column(++column);                 // account for ' '
-        pending.push_back(result_type(T_INTLIT, buffer, pos));
-        pos.set_column(column += (unsigned int)strlen(buffer)); // account for <number>
-        pending.push_back(result_type(T_SPACE, " ", pos));
-        pos.set_column(++column);                 // account for ' '
-
-    std::string file("\"");
-    boost::filesystem::path filename(
-        boost::wave::util::create_path(ctx.get_current_relative_filename().c_str()));
-
-        using boost::wave::util::impl::escape_lit;
-        file += escape_lit(boost::wave::util::native_file_string(filename)) + "\"";
-
-        pending.push_back(result_type(T_STRINGLIT, file.c_str(), pos));
-        pos.set_column(column += (unsigned int)file.size());    // account for filename
-        pending.push_back(result_type(T_GENERATEDNEWLINE, "\n", pos));
-
-        return true;
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'opened_include_file' is called whenever a file referred
-    //  by an #include directive was successfully located and opened.
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'filename' contains the file system path of the
-    //  opened file (this is relative to the directory of the currently
-    //  processed file or a absolute path depending on the paths given as the
-    //  include search paths).
-    //
-    //  The include_depth parameter contains the current include file depth.
-    //
-    //  The is_system_include parameter denotes, whether the given file was
-    //  found as a result of a #include <...> directive.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS != 0
-    // old signature
-    void
-    opened_include_file(std::string const &relname, std::string const &absname,
-        std::size_t include_depth, bool is_system_include)
-    {
-#else
-    // new signature
-    template <typename ContextT>
-    void
-    opened_include_file(ContextT const& ctx, std::string const &relname,
-        std::string const &absname, bool is_system_include)
-    {
-        std::size_t include_depth = ctx.get_iteration_depth();
-#endif
-        if (enabled_include_tracing()) {
-            // print indented filename
-            for (std::size_t i = 0; i < include_depth; ++i)
-                includestrm << " ";
-
-            if (is_system_include)
-                includestrm << "<" << relname << "> (" << absname << ")";
-            else
-                includestrm << "\"" << relname << "\" (" << absname << ")";
-
-            includestrm << std::endl;
-        }
-    }
-
-#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'detected_include_guard' is called whenever either a
-    //  include file is about to be added to the list of #pragma once headers.
-    //  That means this header file will not be opened and parsed again even
-    //  if it is specified in a later #include directive.
-    //  This function is called as the result of a detected include guard
-    //  scheme.
-    //
-    //  The implemented heuristics for include guards detects two forms of
-    //  include guards:
-    //
-    //       #ifndef INCLUDE_GUARD_MACRO
-    //       #define INCLUDE_GUARD_MACRO
-    //       ...
-    //       #endif
-    //
-    //   or
-    //
-    //       if !defined(INCLUDE_GUARD_MACRO)
-    //       #define INCLUDE_GUARD_MACRO
-    //       ...
-    //       #endif
-    //
-    //  note, that the parenthesis are optional (i.e. !defined INCLUDE_GUARD_MACRO
-    //  will work as well). The code allows for any whitespace, newline and single
-    //  '#' tokens before the #if/#ifndef and after the final #endif.
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'filename' contains the file system path of the
-    //  opened file (this is relative to the directory of the currently
-    //  processed file or a absolute path depending on the paths given as the
-    //  include search paths).
-    //
-    //  The parameter contains the name of the detected include guard.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-    template <typename ContextT>
-    void
-    detected_include_guard(ContextT const& ctx, std::string const& filename,
-        std::string const& include_guard)
-   {
-        if (enabled_guard_tracing()) {
-            guardstrm << include_guard << ":" << std::endl
-                      << "  " << filename << std::endl;
-        }
-    }
-#endif
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'may_skip_whitespace' will be called by the
-    //  library whenever a token is about to be returned to the calling
-    //  application.
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The 'token' parameter holds a reference to the current token. The policy
-    //  is free to change this token if needed.
-    //
-    //  The 'skipped_newline' parameter holds a reference to a boolean value
-    //  which should be set to true by the policy function whenever a newline
-    //  is going to be skipped.
-    //
-    //  If the return value is true, the given token is skipped and the
-    //  preprocessing continues to the next token. If the return value is
-    //  false, the given token is returned to the calling application.
-    //
-    //  ATTENTION!
-    //  Caution has to be used, because by returning true the policy function
-    //  is able to force skipping even significant tokens, not only whitespace.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-    template <typename ContextT>
-    bool may_skip_whitespace(ContextT const &ctx, TokenT &token,
-        bool &skipped_newline)
-    {
-        return this->base_type::may_skip_whitespace(
-                ctx, token, need_preserve_comments(ctx.get_language()),
-                preserve_bol_whitespace, skipped_newline) ?
-            !preserve_whitespace : false;
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //
-    //  The function 'throw_exception' will be called by the library whenever a
-    //  preprocessing exception occurs.
-    //
-    //  The parameter 'ctx' is a reference to the context object used for
-    //  instantiating the preprocessing iterators by the user.
-    //
-    //  The parameter 'e' is the exception object containing detailed error
-    //  information.
-    //
-    //  The default behavior is to call the function boost::throw_exception.
-    //
-    ///////////////////////////////////////////////////////////////////////////
-    template <typename ContextT>
-    void
-    throw_exception(ContextT const& ctx, boost::wave::preprocess_exception const& e)
-    {
-#if BOOST_WAVE_SUPPORT_MS_EXTENSIONS != 0
-        if (!is_import_directive_error(e))
-            boost::throw_exception(e);
-#else
-        boost::throw_exception(e);
-#endif
-    }
-    using base_type::throw_exception;
-
-protected:
-#if BOOST_WAVE_SUPPORT_MS_EXTENSIONS != 0
-    ///////////////////////////////////////////////////////////////////////////
-    //  Avoid throwing an error from a #import directive
-    bool is_import_directive_error(boost::wave::preprocess_exception const& e)
-    {
-        using namespace boost::wave;
-        if (e.get_errorcode() != preprocess_exception::ill_formed_directive)
-            return false;
-
-        // the error string is formatted as 'severity: error: directive'
-        std::string error(e.description());
-        std::string::size_type p = error.find_last_of(":");
-        return p != std::string::npos && error.substr(p+2) == "import";
-    }
-#endif
-
-    ///////////////////////////////////////////////////////////////////////////
-    //  Interpret the different Wave specific pragma directives/operators
-    template <typename ContextT, typename ContainerT>
-    bool
-    interpret_pragma_trace(ContextT& ctx, ContainerT const &values,
-        typename ContextT::token_type const &act_token)
-    {
-        typedef typename ContextT::token_type token_type;
-        typedef typename token_type::string_type string_type;
-
-    bool valid_option = false;
-
-        if (1 == values.size()) {
-        token_type const &value = values.front();
-
-            if (value.get_value() == "enable" ||
-                value.get_value() == "on" ||
-                value.get_value() == "1")
-            {
-            // #pragma wave trace(enable)
-                enable_tracing(static_cast<trace_flags>(
-                    tracing_enabled() | trace_macros));
-                valid_option = true;
-            }
-            else if (value.get_value() == "disable" ||
-                value.get_value() == "off" ||
-                value.get_value() == "0")
-            {
-            // #pragma wave trace(disable)
-                enable_tracing(static_cast<trace_flags>(
-                    tracing_enabled() & ~trace_macros));
-                valid_option = true;
-            }
-        }
-        if (!valid_option) {
-        // unknown option value
-        string_type option_str ("trace");
-
-            if (values.size() > 0) {
-                option_str += "(";
-                option_str += boost::wave::util::impl::as_string(values);
-                option_str += ")";
-            }
-            BOOST_WAVE_THROW_CTX(ctx, boost::wave::preprocess_exception,
-                ill_formed_pragma_option, option_str.c_str(),
-                act_token.get_position());
-            return false;
-        }
-        return true;
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //  interpret the pragma wave option(preserve: [0|1|2|3|push|pop]) directive
-    template <typename ContextT>
-    static bool
-    interpret_pragma_option_preserve_set(int mode, bool &preserve_whitespace,
-        bool& preserve_bol_whitespace, ContextT &ctx)
-    {
-        switch(mode) {
-        // preserve no whitespace
-        case 0:
-            preserve_whitespace = false;
-            preserve_bol_whitespace = false;
-            ctx.set_language(
-                enable_preserve_comments(ctx.get_language(), false),
-                false);
-            break;
-
-        // preserve BOL whitespace only
-        case 1:
-            preserve_whitespace = false;
-            preserve_bol_whitespace = true;
-            ctx.set_language(
-                enable_preserve_comments(ctx.get_language(), false),
-                false);
-            break;
-
-        // preserve comments and BOL whitespace only
-        case 2:
-            preserve_whitespace = false;
-            preserve_bol_whitespace = true;
-            ctx.set_language(
-                enable_preserve_comments(ctx.get_language()),
-                false);
-            break;
-
-        // preserve all whitespace
-        case 3:
-            preserve_whitespace = true;
-            preserve_bol_whitespace = true;
-            ctx.set_language(
-                enable_preserve_comments(ctx.get_language()),
-                false);
-            break;
-
-        default:
-              return false;
-        }
-        return true;
-    }
-
-    template <typename ContextT, typename IteratorT>
-    bool
-    interpret_pragma_option_preserve(ContextT &ctx, IteratorT &it,
-        IteratorT end, typename ContextT::token_type const &act_token)
-    {
-        using namespace boost::wave;
-
-        token_id id = util::impl::skip_whitespace(it, end);
-        if (T_COLON == id)
-            id = util::impl::skip_whitespace(it, end);
-
-        // implement push/pop
-        if (T_IDENTIFIER == id) {
-            if ((*it).get_value() == "push") {
-            // push current preserve option onto the internal option stack
-                if (need_preserve_comments(ctx.get_language())) {
-                    if (preserve_whitespace)
-                        preserve_options.push(3);
-                    else
-                        preserve_options.push(2);
-                }
-                else if (preserve_bol_whitespace) {
-                    preserve_options.push(1);
-                }
-                else {
-                    preserve_options.push(0);
-                }
-                return true;
-            }
-            else if ((*it).get_value() == "pop") {
-            // test for mismatched push/pop #pragmas
-                if (preserve_options.empty()) {
-                    BOOST_WAVE_THROW_CTX(ctx, bad_pragma_exception,
-                        pragma_mismatched_push_pop, "preserve",
-                        act_token.get_position());
-                }
-
-            // pop output preserve from the internal option stack
-                bool result = interpret_pragma_option_preserve_set(
-                    preserve_options.top(), preserve_whitespace,
-                    preserve_bol_whitespace, ctx);
-                preserve_options.pop();
-                return result;
-            }
-            return false;
-        }
-
-        if (T_PP_NUMBER != id)
-            return false;
-
-        using namespace std;    // some platforms have atoi in namespace std
-        return interpret_pragma_option_preserve_set(
-            atoi((*it).get_value().c_str()), preserve_whitespace,
-            preserve_bol_whitespace, ctx);
-    }
-
-    //  interpret the pragma wave option(line: [0|1|2|push|pop]) directive
-    template <typename ContextT, typename IteratorT>
-    bool
-    interpret_pragma_option_line(ContextT &ctx, IteratorT &it,
-        IteratorT end, typename ContextT::token_type const &act_token)
-    {
-        using namespace boost::wave;
-
-        token_id id = util::impl::skip_whitespace(it, end);
-        if (T_COLON == id)
-            id = util::impl::skip_whitespace(it, end);
-
-        // implement push/pop
-        if (T_IDENTIFIER == id) {
-            if ((*it).get_value() == "push") {
-            // push current line option onto the internal option stack
-                int mode = 0;
-                if (need_emit_line_directives(ctx.get_language())) {
-                    mode = 1;
-                    if (enable_relative_names_in_line_directives())
-                        mode = 2;
-                }
-                line_options.push(mode);
-                return true;
-            }
-            else if ((*it).get_value() == "pop") {
-            // test for mismatched push/pop #pragmas
-                if (line_options.empty()) {
-                    BOOST_WAVE_THROW_CTX(ctx, bad_pragma_exception,
-                        pragma_mismatched_push_pop, "line",
-                        act_token.get_position());
-                }
-
-            // pop output line from the internal option stack
-                ctx.set_language(
-                    enable_emit_line_directives(ctx.get_language(), 0 != line_options.top()),
-                    false);
-                enable_relative_names_in_line_directives(2 == line_options.top());
-                line_options.pop();
-                return true;
-            }
-            return false;
-        }
-
-        if (T_PP_NUMBER != id)
-            return false;
-
-        using namespace std;    // some platforms have atoi in namespace std
-        int emit_lines = atoi((*it).get_value().c_str());
-        if (0 == emit_lines || 1 == emit_lines || 2 == emit_lines) {
-            // set the new emit #line directive mode
-            ctx.set_language(
-                enable_emit_line_directives(ctx.get_language(), emit_lines),
-                false);
-            return true;
-        }
-        return false;
-    }
-
-    //  interpret the pragma wave option(output: ["filename"|null|default|push|pop])
-    //  directive
-    template <typename ContextT>
-    bool
-    interpret_pragma_option_output_open(boost::filesystem::path &fpath,
-        ContextT& ctx, typename ContextT::token_type const &act_token)
-    {
-        namespace fs = boost::filesystem;
-
-        // ensure all directories for this file do exist
-        boost::wave::util::create_directories(
-            boost::wave::util::branch_path(fpath));
-
-        // figure out, whether the file has been written to by us, if yes, we
-        // append any output to this file, otherwise we overwrite it
-        std::ios::openmode mode = std::ios::out;
-        if (fs::exists(fpath) && written_by_us.find(fpath) != written_by_us.end())
-            mode = (std::ios::openmode)(std::ios::out | std::ios::app);
-
-        written_by_us.insert(fpath);
-
-        // close the current file
-        if (outputstrm.is_open())
-            outputstrm.close();
-
-        // open the new file
-        outputstrm.open(fpath.string().c_str(), mode);
-        if (!outputstrm.is_open()) {
-            BOOST_WAVE_THROW_CTX(ctx, boost::wave::preprocess_exception,
-                could_not_open_output_file,
-                fpath.string().c_str(), act_token.get_position());
-            return false;
-        }
-
-        // write license text, if file was created and if requested
-        if (mode == std::ios::out && !license_info.empty())
-            outputstrm << license_info;
-
-        generate_output = true;
-        current_outfile = fpath;
-        return true;
-    }
-
-    bool interpret_pragma_option_output_close(bool generate)
-    {
-        if (outputstrm.is_open())
-            outputstrm.close();
-        current_outfile = boost::filesystem::path();
-        generate_output = generate;
-        return true;
-    }
-
-    template <typename ContextT, typename IteratorT>
-    bool
-    interpret_pragma_option_output(ContextT &ctx, IteratorT &it,
-        IteratorT end, typename ContextT::token_type const &act_token)
-    {
-        using namespace boost::wave;
-        namespace fs = boost::filesystem;
-
-        typedef typename ContextT::token_type token_type;
-        typedef typename token_type::string_type string_type;
-
-        token_id id = util::impl::skip_whitespace(it, end);
-        if (T_COLON == id)
-            id = util::impl::skip_whitespace(it, end);
-
-        bool result = false;
-        if (T_STRINGLIT == id) {
-            namespace fs = boost::filesystem;
-
-            string_type fname ((*it).get_value());
-            fs::path fpath (boost::wave::util::create_path(
-                util::impl::unescape_lit(fname.substr(1, fname.size()-2)).c_str()));
-            fpath = boost::wave::util::complete_path(fpath, ctx.get_current_directory());
-            result = interpret_pragma_option_output_open(fpath, ctx, act_token);
-        }
-        else if (T_IDENTIFIER == id) {
-            if ((*it).get_value() == "null") {
-            // suppress all output from this point on
-                result = interpret_pragma_option_output_close(false);
-            }
-            else if ((*it).get_value() == "push") {
-            // initialize the current_outfile, if appropriate
-                if (output_options.empty() && current_outfile.empty() &&
-                    !default_outfile.empty() && default_outfile != "-")
-                {
-                    current_outfile = boost::wave::util::complete_path(
-                        default_outfile, ctx.get_current_directory());
-                }
-
-            // push current output option onto the internal option stack
-                output_options.push(
-                    output_option_type(generate_output, current_outfile));
-                result = true;
-            }
-            else if ((*it).get_value() == "pop") {
-            // test for mismatched push/pop #pragmas
-                if (output_options.empty()) {
-                    BOOST_WAVE_THROW_CTX(ctx, bad_pragma_exception,
-                        pragma_mismatched_push_pop, "output",
-                        act_token.get_position());
-                    return false;
-                }
-
-            // pop output option from the internal option stack
-                output_option_type const& opts = output_options.top();
-                generate_output = opts.first;
-                current_outfile = opts.second;
-                if (!current_outfile.empty()) {
-                // re-open the last file
-                    result = interpret_pragma_option_output_open(current_outfile,
-                        ctx, act_token);
-                }
-                else {
-                // either no output or generate to std::cout
-                    result = interpret_pragma_option_output_close(generate_output);
-                }
-                output_options.pop();
-            }
-        }
-        else if (T_DEFAULT == id) {
-        // re-open the default output given on command line
-            if (!default_outfile.empty()) {
-                if (default_outfile == "-") {
-                // the output was suppressed on the command line
-                    result = interpret_pragma_option_output_close(false);
-                }
-                else {
-                // there was a file name on the command line
-                    fs::path fpath(boost::wave::util::create_path(default_outfile));
-                    result = interpret_pragma_option_output_open(fpath, ctx,
-                        act_token);
-                }
-            }
-            else {
-            // generate the output to std::cout
-                result = interpret_pragma_option_output_close(true);
-            }
-        }
-        return result;
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    // join all adjacent string tokens into the first one
-    template <typename StringT>
-    StringT unlit(StringT const& str)
-    {
-        return str.substr(1, str.size()-2);
-    }
-
-    template <typename StringT>
-    StringT merge_string_lits(StringT const& lhs, StringT const& rhs)
-    {
-        StringT result ("\"");
-
-        result += unlit(lhs);
-        result += unlit(rhs);
-        result += "\"";
-        return result;
-    }
-
-    template <typename ContextT, typename ContainerT>
-    void join_adjacent_string_tokens(ContextT &ctx, ContainerT const& values,
-        ContainerT& joined_values)
-    {
-        using namespace boost::wave;
-
-        typedef typename ContextT::token_type token_type;
-        typedef typename token_type::string_type string_type;
-        typedef typename ContainerT::const_iterator const_iterator;
-        typedef typename ContainerT::iterator iterator;
-
-        token_type* current = 0;
-
-        const_iterator end = values.end();
-        for (const_iterator it = values.begin(); it != end; ++it) {
-            token_id id(*it);
-
-            if (id == T_STRINGLIT) {
-                if (!current) {
-                    joined_values.push_back(*it);
-                    current = &joined_values.back();
-                }
-                else {
-                    current->set_value(merge_string_lits(
-                        current->get_value(), (*it).get_value()));
-                }
-            }
-            else if (current) {
-                typedef util::impl::next_token<const_iterator> next_token_type;
-                token_id next_id (next_token_type::peek(it, end, true));
-
-                if (next_id != T_STRINGLIT) {
-                    current = 0;
-                    joined_values.push_back(*it);
-                }
-            }
-            else {
-                joined_values.push_back(*it);
-            }
-        }
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //  interpret the pragma wave option() directives
-    template <typename ContextT, typename ContainerT>
-    bool
-    interpret_pragma_option(ContextT &ctx, ContainerT const &cvalues,
-        typename ContextT::token_type const &act_token)
-    {
-        using namespace boost::wave;
-
-        typedef typename ContextT::token_type token_type;
-        typedef typename token_type::string_type string_type;
-        typedef typename ContainerT::const_iterator const_iterator;
-
-        ContainerT values;
-        join_adjacent_string_tokens(ctx, cvalues, values);
-
-        const_iterator end = values.end();
-        for (const_iterator it = values.begin(); it != end; /**/) {
-        bool valid_option = false;
-
-            token_type const &value = *it;
-            if (value.get_value() == "preserve") {
-            // #pragma wave option(preserve: [0|1|2|3|push|pop])
-                valid_option = interpret_pragma_option_preserve(ctx, it, end,
-                    act_token);
-            }
-            else if (value.get_value() == "line") {
-            // #pragma wave option(line: [0|1|2|push|pop])
-                valid_option = interpret_pragma_option_line(ctx, it, end,
-                    act_token);
-            }
-            else if (value.get_value() == "output") {
-            // #pragma wave option(output: ["filename"|null|default|push|pop])
-                valid_option = interpret_pragma_option_output(ctx, it, end,
-                    act_token);
-            }
-
-            if (!valid_option) {
-            // unknown option value
-            string_type option_str ("option");
-
-                if (values.size() > 0) {
-                    option_str += "(";
-                    option_str += util::impl::as_string(values);
-                    option_str += ")";
-                }
-                BOOST_WAVE_THROW_CTX(ctx, boost::wave::preprocess_exception,
-                    ill_formed_pragma_option,
-                    option_str.c_str(), act_token.get_position());
-                return false;
-            }
-
-            token_id id = util::impl::skip_whitespace(it, end);
-            if (id == T_COMMA)
-                util::impl::skip_whitespace(it, end);
-        }
-        return true;
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    // interpret the #pragma wave system() directive
-    template <typename ContextT, typename ContainerT>
-    bool
-    interpret_pragma_system(ContextT& ctx, ContainerT &pending,
-        ContainerT const &values,
-        typename ContextT::token_type const &act_token)
-    {
-        typedef typename ContextT::token_type token_type;
-        typedef typename token_type::string_type string_type;
-
-        if (0 == values.size()) return false;   // ill_formed_pragma_option
-
-    string_type stdout_file(std::tmpnam(0));
-    string_type stderr_file(std::tmpnam(0));
-    string_type system_str(boost::wave::util::impl::as_string(values));
-    string_type native_cmd(system_str);
-
-        system_str += " >" + stdout_file + " 2>" + stderr_file;
-        if (0 != std::system(system_str.c_str())) {
-        // unable to spawn the command
-        string_type error_str("unable to spawn command: ");
-
-            error_str += native_cmd;
-            BOOST_WAVE_THROW_CTX(ctx, boost::wave::preprocess_exception,
-                ill_formed_pragma_option,
-                error_str.c_str(), act_token.get_position());
-            return false;
-        }
-
-    // rescan the content of the stdout_file and insert it as the
-    // _Pragma replacement
-        typedef typename ContextT::lexer_type lexer_type;
-        typedef typename ContextT::input_policy_type input_policy_type;
-        typedef boost::wave::iteration_context<
-                ContextT, lexer_type, input_policy_type>
-            iteration_context_type;
-
-    iteration_context_type iter_ctx(ctx, stdout_file.c_str(),
-        act_token.get_position(), ctx.get_language());
-    ContainerT pragma;
-
-        for (/**/; iter_ctx.first != iter_ctx.last; ++iter_ctx.first)
-            pragma.push_back(*iter_ctx.first);
-
-    // prepend the newly generated token sequence to the 'pending' container
-        pending.splice(pending.begin(), pragma);
-
-    // erase the created tempfiles
-        std::remove(stdout_file.c_str());
-        std::remove(stderr_file.c_str());
-        return true;
-    }
-
-    ///////////////////////////////////////////////////////////////////////////
-    //  The function enable_tracing is called, whenever the status of the
-    //  tracing was changed.
-    //  The parameter 'enable' is to be used as the new tracing status.
-    void enable_tracing(trace_flags flags)
-        { logging_flags = flags; }
-
-    //  The function tracing_enabled should return the current tracing status.
-    trace_flags tracing_enabled()
-        { return logging_flags; }
-
-    //  Helper functions for generating the trace output
-    void open_trace_body(char const *label = 0)
-    {
-        if (label)
-            output(label);
-        output("[\n");
-        increment_level();
-    }
-    void close_trace_body()
-    {
-        if (get_level() > 0) {
-            decrement_level();
-            output("]\n");
-            tracestrm << std::flush;      // flush the stream buffer
-        }
-    }
-
-    template <typename StringT>
-    void output(StringT const &outstr) const
-    {
-        indent(get_level());
-        tracestrm << outstr;          // output the given string
-    }
-
-    void indent(int level) const
-    {
-        for (int i = 0; i < level; ++i)
-            tracestrm << "  ";        // indent
-    }
-
-    int increment_level() { return ++level; }
-    int decrement_level() { BOOST_ASSERT(level > 0); return --level; }
-    int get_level() const { return level; }
-
-    bool enabled_macro_tracing() const
-    {
-        return (flags & trace_macros) && (logging_flags & trace_macros);
-    }
-    bool enabled_include_tracing() const
-    {
-        return (flags & trace_includes);
-    }
-    bool enabled_guard_tracing() const
-    {
-        return (flags & trace_guards);
-    }
-    bool enabled_macro_counting() const
-    {
-        return logging_flags & trace_macro_counts;
-    }
-
-    void count_invocation(std::string const& name)
-    {
-        typedef std::map<std::string, std::size_t>::iterator iterator;
-        typedef std::map<std::string, std::size_t>::value_type value_type;
-
-        iterator it = counts.find(name);
-        if (it == counts.end())
-        {
-            std::pair<iterator, bool> p = counts.insert(value_type(name, 0));
-            if (p.second)
-                it = p.first;
-        }
-
-        if (it != counts.end())
-            ++(*it).second;
-    }
-
-    void timer(TokenT const &value)
-    {
-        if (value.get_value() == "0" || value.get_value() == "restart") {
-        // restart the timer
-            elapsed_time.restart();
-        }
-        else if (value.get_value() == "1") {
-        // print out the current elapsed time
-            std::cerr
-                << value.get_position() << ": "
-                << elapsed_time.format_elapsed_time()
-                << std::endl;
-        }
-        else if (value.get_value() == "suspend") {
-        // suspend the timer
-            elapsed_time.suspend();
-        }
-        else if (value.get_value() == "resume") {
-        // resume the timer
-            elapsed_time.resume();
-        }
-    }
-
-private:
-    std::ofstream &outputstrm;      // main output stream
-    std::ostream &tracestrm;        // trace output stream
-    std::ostream &includestrm;      // included list output stream
-    std::ostream &guardstrm;        // include guard output stream
-    int level;                      // indentation level
-    trace_flags flags;              // enabled globally
-    trace_flags logging_flags;      // enabled by a #pragma
-    bool enable_system_command;     // enable #pragma wave system() command
-    bool preserve_whitespace;       // enable whitespace preservation
-    bool preserve_bol_whitespace;   // enable begin of line whitespace preservation
-    bool& generate_output;          // allow generated tokens to be streamed to output
-    std::string const& default_outfile;         // name of the output file given on command line
-    boost::filesystem::path current_outfile;    // name of the current output file
-
-    stop_watch elapsed_time;        // trace timings
-    std::set<boost::filesystem::path> written_by_us;    // all files we have written to
-
-    typedef std::pair<bool, boost::filesystem::path> output_option_type;
-    std::stack<output_option_type> output_options;  // output option stack
-    std::stack<int> line_options;       // line option stack
-    std::stack<int> preserve_options;   // preserve option stack
-
-    std::map<std::string, std::size_t> counts;    // macro invocation counts
-    bool emit_relative_filenames;   // emit relative names in #line directives
-
-    std::set<std::string> noexpandmacros;   // list of macros not to expand
-
-    std::string license_info;       // text to pre-pend to all generated output files
-};
-
-#undef BOOST_WAVE_GETSTRING
-#undef BOOST_WAVE_OSSTREAM
-
-#endif // !defined(TRACE_MACRO_EXPANSION_HPP_D8469318_8407_4B9D_A19F_13CA60C1661F_INCLUDED)