add boost on mac

macx64/include/boost/spirit/home/x3/support/utility/annotate_on_success.hpp

@@ -0,0 +1,51 @@
+/*=============================================================================
+    Copyright (c) 2001-2015 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_X3__ANNOTATE_ON_SUCCESS_HPP)
+#define BOOST_SPIRIT_X3__ANNOTATE_ON_SUCCESS_HPP
+
+#include <boost/spirit/home/x3/support/ast/variant.hpp>
+#include <boost/spirit/home/x3/support/context.hpp>
+#include <boost/spirit/home/x3/support/utility/error_reporting.hpp>
+#include <boost/spirit/home/x3/support/utility/lambda_visitor.hpp>
+
+namespace boost { namespace spirit { namespace x3
+{
+    ///////////////////////////////////////////////////////////////////////////
+    //  The on_success handler tags the AST with the iterator position
+    //  for error handling.
+    //
+    //  The on_success handler also ties the AST to a vector of iterator
+    //  positions for the purpose of subsequent semantic error handling
+    //  when the program is being compiled. See x3::position_cache in
+    //  x3/support/ast.
+    //
+    //  We'll ask the X3's error_handler utility to do these.
+    ///////////////////////////////////////////////////////////////////////////
+
+    struct annotate_on_success
+    {
+        template <typename Iterator, typename Context, typename... Types>
+        inline void on_success(Iterator const& first, Iterator const& last
+          , variant<Types...>& ast, Context const& context)
+        {
+            ast.apply_visitor(x3::make_lambda_visitor<void>([&](auto& node)
+            {
+                this->on_success(first, last, node, context);
+            }));
+        }
+
+        template <typename T, typename Iterator, typename Context>
+        inline void on_success(Iterator const& first, Iterator const& last
+          , T& ast, Context const& context)
+        {
+            auto& error_handler = get<error_handler_tag>(context).get();
+            error_handler.tag(ast, first, last);
+        }
+    };
+}}}
+
+#endif

macx64/include/boost/spirit/home/x3/support/utility/error_reporting.hpp

@@ -0,0 +1,242 @@
+/*=============================================================================
+    Copyright (c) 2014 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_X3_ERROR_REPORTING_MAY_19_2014_00405PM)
+#define BOOST_SPIRIT_X3_ERROR_REPORTING_MAY_19_2014_00405PM
+
+#ifndef BOOST_SPIRIT_X3_NO_FILESYSTEM
+#include <boost/filesystem/path.hpp>
+#endif
+
+#include <boost/locale/encoding_utf.hpp>
+#include <boost/spirit/home/x3/support/ast/position_tagged.hpp>
+#include <ostream>
+
+// Clang-style error handling utilities
+
+namespace boost { namespace spirit { namespace x3
+{
+    // tag used to get our error handler from the context
+    struct error_handler_tag;
+
+    template <typename Iterator>
+    class error_handler
+    {
+    public:
+
+        typedef Iterator iterator_type;
+
+        error_handler(
+            Iterator first, Iterator last, std::ostream& err_out
+          , std::string file = "", int tabs = 4)
+          : err_out(err_out)
+          , file(file)
+          , tabs(tabs)
+          , pos_cache(first, last) {}
+
+        typedef void result_type;
+
+        void operator()(Iterator err_pos, std::string const& error_message) const;
+        void operator()(Iterator err_first, Iterator err_last, std::string const& error_message) const;
+        void operator()(position_tagged pos, std::string const& message) const
+        {
+            auto where = pos_cache.position_of(pos);
+            (*this)(where.begin(), where.end(), message);
+        }
+
+        template <typename AST>
+        void tag(AST& ast, Iterator first, Iterator last)
+        {
+            return pos_cache.annotate(ast, first, last);
+        }
+
+        boost::iterator_range<Iterator> position_of(position_tagged pos) const
+        {
+            return pos_cache.position_of(pos);
+        }
+
+        position_cache<std::vector<Iterator>> const& get_position_cache() const
+        {
+            return pos_cache;
+        }
+
+    private:
+
+        void print_file_line(std::size_t line) const;
+        void print_line(Iterator line_start, Iterator last) const;
+        void print_indicator(Iterator& line_start, Iterator last, char ind) const;
+        void skip_whitespace(Iterator& err_pos, Iterator last) const;
+        void skip_non_whitespace(Iterator& err_pos, Iterator last) const;
+        Iterator get_line_start(Iterator first, Iterator pos) const;
+        std::size_t position(Iterator i) const;
+
+        std::ostream& err_out;
+        std::string file;
+        int tabs;
+        position_cache<std::vector<Iterator>> pos_cache;
+    };
+
+    template <typename Iterator>
+    void error_handler<Iterator>::print_file_line(std::size_t line) const
+    {
+        if (file != "")
+        {
+#ifdef BOOST_SPIRIT_X3_NO_FILESYSTEM
+            err_out << "In file " << file << ", ";
+#else
+            namespace fs = boost::filesystem;
+            err_out << "In file " << fs::path(file).generic_string() << ", ";
+#endif
+        }
+        else
+        {
+            err_out << "In ";
+        }
+
+        err_out << "line " << line << ':' << std::endl;
+    }
+
+    template <typename Iterator>
+    void error_handler<Iterator>::print_line(Iterator start, Iterator last) const
+    {
+        auto end = start;
+        while (end != last)
+        {
+            auto c = *end;
+            if (c == '\r' || c == '\n')
+                break;
+            else
+                ++end;
+        }
+        typedef typename std::iterator_traits<Iterator>::value_type char_type;
+        std::basic_string<char_type> line{start, end};
+        err_out << locale::conv::utf_to_utf<char>(line) << std::endl;
+    }
+
+    template <typename Iterator>
+    void error_handler<Iterator>::print_indicator(Iterator& start, Iterator last, char ind) const
+    {
+        for (; start != last; ++start)
+        {
+            auto c = *start;
+            if (c == '\r' || c == '\n')
+                break;
+            else if (c == '\t')
+                for (int i = 0; i < tabs; ++i)
+                    err_out << ind;
+            else
+                err_out << ind;
+        }
+    }
+
+    template <typename Iterator>
+    void error_handler<Iterator>::skip_whitespace(Iterator& err_pos, Iterator last) const
+    {
+        // make sure err_pos does not point to white space
+        while (err_pos != last)
+        {
+            char c = *err_pos;
+            if (std::isspace(c))
+                ++err_pos;
+            else
+                break;
+        }
+    }
+
+    template <typename Iterator>
+    void error_handler<Iterator>::skip_non_whitespace(Iterator& err_pos, Iterator last) const
+    {
+        // make sure err_pos does not point to white space
+        while (err_pos != last)
+        {
+            char c = *err_pos;
+            if (std::isspace(c))
+                break;
+            else
+                ++err_pos;
+        }
+    }
+
+    template <class Iterator>
+    inline Iterator error_handler<Iterator>::get_line_start(Iterator first, Iterator pos) const
+    {
+        Iterator latest = first;
+        for (Iterator i = first; i != pos; ++i)
+            if (*i == '\r' || *i == '\n')
+                latest = i;
+        return latest;
+    }
+
+    template <typename Iterator>
+    std::size_t error_handler<Iterator>::position(Iterator i) const
+    {
+        std::size_t line { 1 };
+        typename std::iterator_traits<Iterator>::value_type prev { 0 };
+
+        for (Iterator pos = pos_cache.first(); pos != i; ++pos) {
+            auto c = *pos;
+            switch (c) {
+            case '\n':
+                if (prev != '\r') ++line;
+                break;
+            case '\r':
+                ++line;
+                break;
+            default:
+                break;
+            }
+            prev = c;
+        }
+
+        return line;
+    }
+
+    template <typename Iterator>
+    void error_handler<Iterator>::operator()(
+        Iterator err_pos, std::string const& error_message) const
+    {
+        Iterator first = pos_cache.first();
+        Iterator last = pos_cache.last();
+
+        // make sure err_pos does not point to white space
+        skip_whitespace(err_pos, last);
+
+        print_file_line(position(err_pos));
+        err_out << error_message << std::endl;
+
+        Iterator start = get_line_start(first, err_pos);
+        if (start != first)
+            ++start;
+        print_line(start, last);
+        print_indicator(start, err_pos, '_');
+        err_out << "^_" << std::endl;
+    }
+
+    template <typename Iterator>
+    void error_handler<Iterator>::operator()(
+        Iterator err_first, Iterator err_last, std::string const& error_message) const
+    {
+        Iterator first = pos_cache.first();
+        Iterator last = pos_cache.last();
+
+        // make sure err_pos does not point to white space
+        skip_whitespace(err_first, last);
+
+        print_file_line(position(err_first));
+        err_out << error_message << std::endl;
+
+        Iterator start = get_line_start(first, err_first);
+        if (start != first)
+            ++start;
+        print_line(start, last);
+        print_indicator(start, err_first, ' ');
+        print_indicator(start, err_last, '~');
+        err_out << " <<-- Here" << std::endl;
+    }
+
+}}}
+
+#endif

macx64/include/boost/spirit/home/x3/support/utility/is_callable.hpp

@@ -0,0 +1,35 @@
+/*//////////////////////////////////////////////////////////////////////////////
+    Copyright (c) 2014 Jamboree
+
+    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)
+//////////////////////////////////////////////////////////////////////////////*/
+#ifndef BOOST_SPIRIT_X3_IS_CALLABLE_HPP_INCLUDED
+#define BOOST_SPIRIT_X3_IS_CALLABLE_HPP_INCLUDED
+
+#include <boost/mpl/bool.hpp>
+#include <boost/spirit/home/x3/support/utility/sfinae.hpp>
+
+namespace boost { namespace spirit { namespace x3 { namespace detail
+{
+    template <typename Sig, typename Enable = void>
+    struct is_callable_impl : mpl::false_ {};
+
+    template <typename F, typename... A>
+    struct is_callable_impl<F(A...), typename disable_if_substitution_failure<
+        decltype(std::declval<F>()(std::declval<A>()...))>::type>
+      : mpl::true_
+    {};
+}}}}
+
+namespace boost { namespace spirit { namespace x3
+{
+    template <typename Sig>
+    struct is_callable;
+
+    template <typename F, typename... A>
+    struct is_callable<F(A...)> : detail::is_callable_impl<F(A...)> {};
+}}}
+
+
+#endif

macx64/include/boost/spirit/home/x3/support/utility/lambda_visitor.hpp

@@ -0,0 +1,49 @@
+/*=============================================================================
+    Copyright (c) 2014 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_X3_LAMBDA_VISITOR_MAY_19_2014_1116AM)
+#define BOOST_SPIRIT_X3_LAMBDA_VISITOR_MAY_19_2014_1116AM
+
+namespace boost { namespace spirit { namespace x3
+{
+    template <typename RT, typename... Lambdas>
+    struct lambda_visitor;
+
+    template <typename RT, typename F, typename... Lambdas>
+    struct lambda_visitor<RT, F, Lambdas...> : F, lambda_visitor<RT, Lambdas...>
+    {
+        typedef lambda_visitor<RT , Lambdas...> base_type;
+        using F::operator();
+        using base_type::operator();
+        lambda_visitor(F f, Lambdas... lambdas)
+          : F(f), base_type(lambdas...)
+        {}
+    };
+
+    template <typename RT, typename F>
+    struct lambda_visitor<RT, F> : F
+    {
+        typedef RT result_type;
+        using F::operator();
+        lambda_visitor(F f)
+          : F(f)
+        {}
+    };
+
+    template <typename RT>
+    struct lambda_visitor<RT>
+    {
+        typedef RT result_type;
+    };
+
+    template <typename RT, typename... Lambdas>
+    lambda_visitor<RT, Lambdas...> make_lambda_visitor(Lambdas... lambdas)
+    {
+        return { lambdas... };
+    }
+}}}
+
+#endif

macx64/include/boost/spirit/home/x3/support/utility/sfinae.hpp

@@ -0,0 +1,26 @@
+/*=============================================================================
+    Copyright (c) 2001-2014 Joel de Guzman
+    Copyright (c) 2013 Agustin Berge
+
+    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_X3_SFINAE_MAY_20_2013_0840AM)
+#define BOOST_SPIRIT_X3_SFINAE_MAY_20_2013_0840AM
+
+namespace boost { namespace spirit { namespace x3
+{
+    template <typename Expr, typename T = void>
+    struct disable_if_substitution_failure
+    {
+        typedef T type;
+    };
+    
+    template <typename Expr, typename T>
+    struct lazy_disable_if_substitution_failure
+    {
+        typedef typename T::type type;
+    };
+}}}
+
+#endif

macx64/include/boost/spirit/home/x3/support/utility/testing.hpp

@@ -0,0 +1,269 @@
+/*=============================================================================
+    Copyright (c) 2001-2015 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_X3_TEST_UTILITIES)
+#define BOOST_SPIRIT_X3_TEST_UTILITIES
+
+#include <boost/regex.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/fstream.hpp>
+
+namespace boost { namespace spirit { namespace x3 { namespace testing
+{
+    namespace fs = boost::filesystem;
+
+    ////////////////////////////////////////////////////////////////////////////
+    // compare
+    //
+    //      Compares the contents of in with the template tem. The template
+    //      may include embedded regular expressions marked up within re_prefix
+    //      and re_suffix tags. For example, given the default RE markup, this
+    //      template <%[0-9]+%> will match any integer in in. The function
+    //      will return the first non-matching position. The flag full_match
+    //      indicates a full match. It is possible for returned pos to be
+    //      at the end of in (in.end()) while still returning full_match ==
+    //      false. In that case, we have a partial match.
+    ////////////////////////////////////////////////////////////////////////////
+
+    template <typename Iterator>
+    struct compare_result
+    {
+        compare_result(
+            Iterator pos
+          , bool full_match
+        ) : pos(pos), full_match(full_match) {}
+
+        Iterator pos;
+        bool full_match;
+    };
+
+    template <typename Range>
+    compare_result<typename Range::const_iterator>
+    compare(
+        Range const& in
+      , Range const& tem
+      , char const* re_prefix = "<%"
+      , char const* re_suffix = "%>"
+    );
+
+    ////////////////////////////////////////////////////////////////////////////
+    // compare
+    //
+    //      1) Call f, given the contents of input_path loaded in a string.
+    //         The result of calling f is the output string.
+    //      2) Compare the result of calling f with expected template
+    //         file (expect_path) using the low-level compare utility
+    //         abive
+    ////////////////////////////////////////////////////////////////////////////
+    template <typename F>
+    bool compare(
+        fs::path input_path, fs::path expect_path
+      , F f
+      , char const* re_prefix = "<%"
+      , char const* re_suffix = "%>"
+    );
+
+    ////////////////////////////////////////////////////////////////////////////
+    // for_each_file
+    //
+    //      For each *.input and *.expect file in a given directory,
+    //      call the function f, passing in the *.input and *.expect paths.
+    ////////////////////////////////////////////////////////////////////////////
+    template <typename F>
+    int for_each_file(fs::path p, F f);
+
+    ////////////////////////////////////////////////////////////////////////////
+    // load_file
+    //
+    //      Load file into a string.
+    ////////////////////////////////////////////////////////////////////////////
+    std::string load(fs::path p);
+
+    ////////////////////////////////////////////////////////////////////////////
+    // Implementation
+    ////////////////////////////////////////////////////////////////////////////
+
+    template <typename Iterator>
+    inline bool is_regex(
+        Iterator& first
+      , Iterator last
+      , std::string& re
+      , char const* re_prefix
+      , char const* re_suffix
+   )
+   {
+       boost::regex e(re_prefix + std::string("(.*?)") + re_suffix);
+       boost::match_results<Iterator> what;
+       if (boost::regex_search(
+            first, last, what, e
+          , boost::match_default | boost::match_continuous))
+        {
+            re = what[1].str();
+            first = what[0].second;
+            return true;
+        }
+        return false;
+    }
+
+    template <typename Range>
+    inline compare_result<typename Range::const_iterator>
+    compare(
+        Range const& in
+      , Range const& tem
+      , char const* re_prefix
+      , char const* re_suffix
+    )
+    {
+       typedef typename Range::const_iterator iter_t;
+       typedef compare_result<iter_t> compare_result_t;
+
+       iter_t in_first = in.begin();
+       iter_t in_last = in.end();
+       iter_t tem_first = tem.begin();
+       iter_t tem_last = tem.end();
+       std::string re;
+
+       while (in_first != in_last && tem_first != tem_last)
+       {
+            if (is_regex(tem_first, tem_last, re, re_prefix, re_suffix))
+            {
+                boost::match_results<iter_t> what;
+                boost::regex e(re);
+                if (!boost::regex_search(
+                    in_first, in_last, what, e
+                  , boost::match_default | boost::match_continuous))
+                {
+                    // RE mismatch: exit now.
+                    return compare_result_t(in_first, false);
+                }
+                else
+                {
+                    // RE match: gobble the matching string.
+                    in_first = what[0].second;
+                }
+            }
+            else
+            {
+                // Char by char comparison. Exit if we have a mismatch.
+                if (*in_first++ != *tem_first++)
+                    return compare_result_t(in_first, false);
+            }
+        }
+
+        // Ignore trailing spaces in template
+        bool has_trailing_nonspaces = false;
+        while (tem_first != tem_last)
+        {
+            if (!std::isspace(*tem_first++))
+            {
+                has_trailing_nonspaces = true;
+                break;
+            }
+        }
+        while (in_first != in_last)
+        {
+            if (!std::isspace(*in_first++))
+            {
+                has_trailing_nonspaces = true;
+                break;
+            }
+        }
+        // return a full match only if the template is fully matched and if there
+        // are no more characters to match in the source
+        return compare_result_t(in_first, !has_trailing_nonspaces);
+   }
+
+    template <typename F>
+    inline int for_each_file(fs::path p, F f)
+    {
+        try
+        {
+            if (fs::exists(p) && fs::is_directory(p))
+            {
+                for (auto i = fs::directory_iterator(p); i != fs::directory_iterator(); ++i)
+                {
+                   auto ext = fs::extension(i->path());
+                   if (ext == ".input")
+                   {
+                      auto input_path = i->path();
+                      auto expect_path = input_path;
+                      expect_path.replace_extension(".expect");
+                      f(input_path, expect_path);
+                   }
+                }
+            }
+            else
+            {
+                std::cerr << "Directory: " << fs::absolute(p) << " does not exist." << std::endl;
+                return 1;
+            }
+        }
+
+        catch (const fs::filesystem_error& ex)
+        {
+            std::cerr << ex.what() << '\n';
+            return 1;
+        }
+        return 0;
+    }
+
+    inline std::string load(fs::path p)
+    {
+        boost::filesystem::ifstream file(p);
+        if (!file)
+            return "";
+        std::string contents((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
+        return contents;
+    }
+
+    template <typename F>
+    inline bool compare(
+        fs::path input_path, fs::path expect_path
+      , F f
+      , char const* re_prefix
+      , char const* re_suffix
+    )
+    {
+        std::string output = f(load(input_path), input_path);
+        std::string expected = load(expect_path);
+
+        auto result = compare(output, expected, re_prefix, re_suffix);
+        if (!result.full_match)
+        {
+            std::cout << "=============================================" << std::endl;
+            std::cout << "==== Mismatch Found:" << std::endl;
+            int line = 1;
+            int col = 1;
+            for (auto i = output.begin(); i != result.pos; ++i)
+            {
+                if (*i == '\n')
+                {
+                    line++;
+                    col = 0;
+                }
+                ++col;
+            }
+
+            std::cerr
+                << "==== File: " << expect_path
+                << ", Line: " << line
+                << ", Column: " << col
+                << std::endl;
+            std::cerr << "=============================================" << std::endl;
+
+            // Print output
+            std::cerr << output;
+            std::cerr << "=============================================" << std::endl;
+            std::cerr << "==== End" << std::endl;
+            std::cerr << "=============================================" << std::endl;
+            return false;
+        }
+        return true;
+    }
+
+}}}}
+
+#endif

macx64/include/boost/spirit/home/x3/support/utility/unrefcv.hpp

@@ -0,0 +1,25 @@
+/*//////////////////////////////////////////////////////////////////////////////
+    Copyright (c) 2014 Jamboree
+
+    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)
+//////////////////////////////////////////////////////////////////////////////*/
+#ifndef BOOST_SPIRIT_X3_UNREFCV_HPP_INCLUDED
+#define BOOST_SPIRIT_X3_UNREFCV_HPP_INCLUDED
+
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+
+
+namespace boost { namespace spirit { namespace x3
+{
+    template <typename T>
+    struct unrefcv : remove_cv<typename remove_reference<T>::type> {};
+
+    template <typename T>
+    using unrefcv_t = typename unrefcv<T>::type;
+}}}
+
+
+#endif
+

macx64/include/boost/spirit/home/x3/support/utility/utf8.hpp

@@ -0,0 +1,105 @@
+/*=============================================================================
+    Copyright (c) 2001-2014 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_X3_UC_TYPES_NOVEMBER_23_2008_0840PM)
+#define BOOST_SPIRIT_X3_UC_TYPES_NOVEMBER_23_2008_0840PM
+
+#include <boost/cstdint.hpp>
+#include <boost/regex/pending/unicode_iterator.hpp>
+#include <boost/type_traits/make_unsigned.hpp>
+#include <string>
+
+namespace boost { namespace spirit { namespace x3
+{
+    typedef ::boost::uint32_t ucs4_char;
+    typedef char utf8_char;
+    typedef std::basic_string<ucs4_char> ucs4_string;
+    typedef std::basic_string<utf8_char> utf8_string;
+
+    template <typename Char>
+    inline utf8_string to_utf8(Char value)
+    {
+        // always store as UTF8
+        utf8_string result;
+        typedef std::back_insert_iterator<utf8_string> insert_iter;
+        insert_iter out_iter(result);
+        utf8_output_iterator<insert_iter> utf8_iter(out_iter);
+        typedef typename make_unsigned<Char>::type UChar;
+        *utf8_iter = (UChar)value;
+        return result;
+    }
+
+    template <typename Char>
+    inline utf8_string to_utf8(Char const* str)
+    {
+        // always store as UTF8
+        utf8_string result;
+        typedef std::back_insert_iterator<utf8_string> insert_iter;
+        insert_iter out_iter(result);
+        utf8_output_iterator<insert_iter> utf8_iter(out_iter);
+        typedef typename make_unsigned<Char>::type UChar;
+        while (*str)
+            *utf8_iter++ = (UChar)*str++;
+        return result;
+    }
+
+    template <typename Char, typename Traits, typename Allocator>
+    inline utf8_string
+    to_utf8(std::basic_string<Char, Traits, Allocator> const& str)
+    {
+        // always store as UTF8
+        utf8_string result;
+        typedef std::back_insert_iterator<utf8_string> insert_iter;
+        insert_iter out_iter(result);
+        utf8_output_iterator<insert_iter> utf8_iter(out_iter);
+        typedef typename make_unsigned<Char>::type UChar;
+        for (Char ch : str)
+        {
+            *utf8_iter++ = (UChar)ch;
+        }
+        return result;
+    }
+
+    // Assume wchar_t content is UTF-16 on Windows and UCS-4 on Unix
+#if defined(_WIN32) || defined(__CYGWIN__)
+    inline utf8_string to_utf8(wchar_t value)
+    {
+        utf8_string result;
+        typedef std::back_insert_iterator<utf8_string> insert_iter;
+        insert_iter out_iter(result);
+        utf8_output_iterator<insert_iter> utf8_iter(out_iter);
+
+        u16_to_u32_iterator<wchar_t const*, ucs4_char> ucs4_iter(&value);
+        *utf8_iter++ = *ucs4_iter;
+
+        return result;
+    }
+
+    inline utf8_string to_utf8(wchar_t const* str)
+    {
+        utf8_string result;
+        typedef std::back_insert_iterator<utf8_string> insert_iter;
+        insert_iter out_iter(result);
+        utf8_output_iterator<insert_iter> utf8_iter(out_iter);
+
+        u16_to_u32_iterator<wchar_t const*, ucs4_char> ucs4_iter(str);
+        for (ucs4_char c; (c = *ucs4_iter) != ucs4_char(); ++ucs4_iter) {
+            *utf8_iter++ = c;
+        }
+
+        return result;
+    }
+
+    template <typename Traits, typename Allocator>
+    inline utf8_string
+    to_utf8(std::basic_string<wchar_t, Traits, Allocator> const& str)
+    {
+        return to_utf8(str.c_str());
+    }
+#endif
+}}}
+
+#endif