initial

1 files changed, 748 insertions, 0 deletions

diff --git a/include/jsoncons_ext/msgpack/msgpack_parser.hpp b/include/jsoncons_ext/msgpack/msgpack_parser.hpp
new file mode 100644
index 0000000..cf2d507
--- /dev/null
+++ b/include/jsoncons_ext/msgpack/msgpack_parser.hpp
@@ -0,0 +1,748 @@
+// Copyright 2017 Daniel Parker
+// Distributed under the Boost license, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// See https://github.com/danielaparker/jsoncons for latest version
+
+#ifndef JSONCONS_MSGPACK_MSGPACK_PARSER_HPP
+#define JSONCONS_MSGPACK_MSGPACK_PARSER_HPP
+
+#include <string>
+#include <vector>
+#include <memory>
+#include <utility> // std::move
+#include <jsoncons/json.hpp>
+#include <jsoncons/source.hpp>
+#include <jsoncons/bigint.hpp>
+#include <jsoncons/json_visitor.hpp>
+#include <jsoncons/config/jsoncons_config.hpp>
+#include <jsoncons_ext/msgpack/msgpack_type.hpp>
+#include <jsoncons_ext/msgpack/msgpack_error.hpp>
+#include <jsoncons_ext/msgpack/msgpack_options.hpp>
+#include <jsoncons/json_visitor2.hpp>
+
+namespace jsoncons { namespace msgpack {
+
+enum class parse_mode {root,accept,array,map_key,map_value};
+
+struct parse_state 
+{
+    parse_mode mode; 
+    std::size_t length;
+    std::size_t index;
+
+    parse_state(parse_mode mode, std::size_t length) noexcept
+        : mode(mode), length(length), index(0)
+    {
+    }
+
+    parse_state(const parse_state&) = default;
+    parse_state(parse_state&&) = default;
+};
+
+template <class Source,class Allocator=std::allocator<char>>
+class basic_msgpack_parser : public ser_context
+{
+    using char_type = char;
+    using char_traits_type = std::char_traits<char>;
+    using temp_allocator_type = Allocator;
+    using char_allocator_type = typename std::allocator_traits<temp_allocator_type>:: template rebind_alloc<char_type>;                  
+    using byte_allocator_type = typename std::allocator_traits<temp_allocator_type>:: template rebind_alloc<uint8_t>;                  
+    using int64_allocator_type = typename std::allocator_traits<temp_allocator_type>:: template rebind_alloc<int64_t>;                  
+    using parse_state_allocator_type = typename std::allocator_traits<temp_allocator_type>:: template rebind_alloc<parse_state>;                         
+
+    static constexpr int64_t nanos_in_second = 1000000000;
+
+    Source source_;
+    msgpack_decode_options options_;
+    bool more_;
+    bool done_;
+    std::basic_string<char,std::char_traits<char>,char_allocator_type> text_buffer_;
+    std::vector<uint8_t,byte_allocator_type> bytes_buffer_;
+    std::vector<parse_state,parse_state_allocator_type> state_stack_;
+    int nesting_depth_;
+
+public:
+    template <class Sourceable>
+    basic_msgpack_parser(Sourceable&& source,
+                         const msgpack_decode_options& options = msgpack_decode_options(),
+                         const Allocator alloc = Allocator())
+       : source_(std::forward<Sourceable>(source)),
+         options_(options),
+         more_(true), 
+         done_(false),
+         text_buffer_(alloc),
+         bytes_buffer_(alloc),
+         state_stack_(alloc),
+         nesting_depth_(0)
+    {
+        state_stack_.emplace_back(parse_mode::root,0);
+    }
+
+    void restart()
+    {
+        more_ = true;
+    }
+
+    void reset()
+    {
+        more_ = true;
+        done_ = false;
+        text_buffer_.clear();
+        bytes_buffer_.clear();
+        state_stack_.clear();
+        state_stack_.emplace_back(parse_mode::root,0);
+        nesting_depth_ = 0;
+    }
+
+    template <class Sourceable>
+    void reset(Sourceable&& source)
+    {
+        source_ = std::forward<Sourceable>(source);
+        reset();
+    }
+
+    bool done() const
+    {
+        return done_;
+    }
+
+    bool stopped() const
+    {
+        return !more_;
+    }
+
+    std::size_t line() const override
+    {
+        return 0;
+    }
+
+    std::size_t column() const override
+    {
+        return source_.position();
+    }
+
+    void parse(json_visitor2& visitor, std::error_code& ec)
+    {
+        while (!done_ && more_)
+        {
+            switch (state_stack_.back().mode)
+            {
+                case parse_mode::array:
+                {
+                    if (state_stack_.back().index < state_stack_.back().length)
+                    {
+                        ++state_stack_.back().index;
+                        read_item(visitor, ec);
+                        if (ec)
+                        {
+                            return;
+                        }
+                    }
+                    else
+                    {
+                        end_array(visitor, ec);
+                    }
+                    break;
+                }
+                case parse_mode::map_key:
+                {
+                    if (state_stack_.back().index < state_stack_.back().length)
+                    {
+                        ++state_stack_.back().index;
+                        state_stack_.back().mode = parse_mode::map_value;
+                        read_item(visitor, ec);
+                        if (ec)
+                        {
+                            return;
+                        }
+                    }
+                    else
+                    {
+                        end_object(visitor, ec);
+                    }
+                    break;
+                }
+                case parse_mode::map_value:
+                {
+                    state_stack_.back().mode = parse_mode::map_key;
+                    read_item(visitor, ec);
+                    if (ec)
+                    {
+                        return;
+                    }
+                    break;
+                }
+                case parse_mode::root:
+                {
+                    state_stack_.back().mode = parse_mode::accept;
+                    read_item(visitor, ec);
+                    if (ec)
+                    {
+                        return;
+                    }
+                    break;
+                }
+                case parse_mode::accept:
+                {
+                    JSONCONS_ASSERT(state_stack_.size() == 1);
+                    state_stack_.clear();
+                    more_ = false;
+                    done_ = true;
+                    visitor.flush();
+                    break;
+                }
+            }
+        }
+    }
+private:
+
+    void read_item(json_visitor2& visitor, std::error_code& ec)
+    {
+        if (source_.is_error())
+        {
+            ec = msgpack_errc::source_error;
+            more_ = false;
+            return;
+        }   
+
+        uint8_t type;
+        if (source_.read(&type, 1) == 0)
+        {
+            ec = msgpack_errc::unexpected_eof;
+            more_ = false;
+            return;
+        }
+
+        if (type <= 0xbf)
+        {
+            if (type <= 0x7f) 
+            {
+                // positive fixint
+                more_ = visitor.uint64_value(type, semantic_tag::none, *this, ec);
+            }
+            else if (type <= 0x8f) 
+            {
+                begin_object(visitor,type,ec); // fixmap
+            }
+            else if (type <= 0x9f) 
+            {
+                begin_array(visitor,type,ec); // fixarray
+            }
+            else 
+            {
+                // fixstr
+                const size_t len = type & 0x1f;
+
+                text_buffer_.clear();
+
+                if (source_reader<Source>::read(source_,text_buffer_,len) != static_cast<std::size_t>(len))
+                {
+                    ec = msgpack_errc::unexpected_eof;
+                    more_ = false;
+                    return;
+                }
+
+                auto result = unicode_traits::validate(text_buffer_.data(),text_buffer_.size());
+                if (result.ec != unicode_traits::conv_errc())
+                {
+                    ec = msgpack_errc::invalid_utf8_text_string;
+                    more_ = false;
+                    return;
+                }
+                more_ = visitor.string_value(jsoncons::basic_string_view<char>(text_buffer_.data(),text_buffer_.length()), semantic_tag::none, *this, ec);
+            }
+        }
+        else if (type >= 0xe0) 
+        {
+            // negative fixint
+            more_ = visitor.int64_value(static_cast<int8_t>(type), semantic_tag::none, *this, ec);
+        }
+        else
+        {
+            switch (type)
+            {
+                case jsoncons::msgpack::msgpack_type::nil_type: 
+                {
+                    more_ = visitor.null_value(semantic_tag::none, *this, ec);
+                    break;
+                }
+                case jsoncons::msgpack::msgpack_type::true_type:
+                {
+                    more_ = visitor.bool_value(true, semantic_tag::none, *this, ec);
+                    break;
+                }
+                case jsoncons::msgpack::msgpack_type::false_type:
+                {
+                    more_ = visitor.bool_value(false, semantic_tag::none, *this, ec);
+                    break;
+                }
+                case jsoncons::msgpack::msgpack_type::float32_type: 
+                {
+                    uint8_t buf[sizeof(float)];
+                    if (source_.read(buf, sizeof(float)) != sizeof(float))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    float val = binary::big_to_native<float>(buf, sizeof(buf));
+                    more_ = visitor.double_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::float64_type: 
+                {
+                    uint8_t buf[sizeof(double)];
+                    if (source_.read(buf, sizeof(double)) != sizeof(double))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    double val = binary::big_to_native<double>(buf, sizeof(buf));
+                    more_ = visitor.double_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::uint8_type: 
+                {
+                    uint8_t b;
+                    if (source_.read(&b, 1) == 0)
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    more_ = visitor.uint64_value(b, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::uint16_type: 
+                {
+                    uint8_t buf[sizeof(uint16_t)];
+                    if (source_.read(buf, sizeof(uint16_t)) !=sizeof(uint16_t)) 
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    uint16_t val = binary::big_to_native<uint16_t>(buf, sizeof(buf));
+                    more_ = visitor.uint64_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::uint32_type: 
+                {
+                    uint8_t buf[sizeof(uint32_t)];
+                    if (source_.read(buf, sizeof(uint32_t)) != sizeof(uint32_t))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    uint32_t val = binary::big_to_native<uint32_t>(buf, sizeof(buf));
+                    more_ = visitor.uint64_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::uint64_type: 
+                {
+                    uint8_t buf[sizeof(uint64_t)];
+                    if (source_.read(buf, sizeof(uint64_t)) != sizeof(uint64_t))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    uint64_t val = binary::big_to_native<uint64_t>(buf, sizeof(buf));
+                    more_ = visitor.uint64_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::int8_type: 
+                {
+                    uint8_t buf[sizeof(int8_t)];
+                    if (source_.read(buf, sizeof(int8_t)) != sizeof(int8_t))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    int8_t val = binary::big_to_native<int8_t>(buf, sizeof(buf));
+                    more_ = visitor.int64_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::int16_type: 
+                {
+                    uint8_t buf[sizeof(int16_t)];
+                    if (source_.read(buf, sizeof(int16_t)) != sizeof(int16_t))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    int16_t val = binary::big_to_native<int16_t>(buf, sizeof(buf));
+                    more_ = visitor.int64_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::int32_type: 
+                {
+                    uint8_t buf[sizeof(int32_t)];
+                    if (source_.read(buf, sizeof(int32_t)) != sizeof(int32_t))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    int32_t val = binary::big_to_native<int32_t>(buf, sizeof(buf));
+                    more_ = visitor.int64_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::int64_type: 
+                {
+                    uint8_t buf[sizeof(int64_t)];
+                    if (source_.read(buf, sizeof(int64_t)) != sizeof(int64_t))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+                    int64_t val = binary::big_to_native<int64_t>(buf, sizeof(buf));
+                    more_ = visitor.int64_value(val, semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::str8_type: 
+                case jsoncons::msgpack::msgpack_type::str16_type: 
+                case jsoncons::msgpack::msgpack_type::str32_type: 
+                {
+                    std::size_t len = get_size(type, ec);
+                    if (!more_)
+                    {
+                        return;
+                    }
+
+                    text_buffer_.clear();
+                    if (source_reader<Source>::read(source_,text_buffer_,len) != static_cast<std::size_t>(len))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+
+                    auto result = unicode_traits::validate(text_buffer_.data(),text_buffer_.size());
+                    if (result.ec != unicode_traits::conv_errc())
+                    {
+                        ec = msgpack_errc::invalid_utf8_text_string;
+                        more_ = false;
+                        return;
+                    }
+                    more_ = visitor.string_value(jsoncons::basic_string_view<char>(text_buffer_.data(),text_buffer_.length()), semantic_tag::none, *this, ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::bin8_type: 
+                case jsoncons::msgpack::msgpack_type::bin16_type: 
+                case jsoncons::msgpack::msgpack_type::bin32_type: 
+                {
+                    std::size_t len = get_size(type,ec);
+                    if (!more_)
+                    {
+                        return;
+                    }
+                    bytes_buffer_.clear();
+                    if (source_reader<Source>::read(source_,bytes_buffer_,len) != static_cast<std::size_t>(len))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+
+                    more_ = visitor.byte_string_value(byte_string_view(bytes_buffer_.data(),bytes_buffer_.size()), 
+                                                      semantic_tag::none, 
+                                                      *this,
+                                                      ec);
+                    break;
+                }
+                case jsoncons::msgpack::msgpack_type::fixext1_type: 
+                case jsoncons::msgpack::msgpack_type::fixext2_type: 
+                case jsoncons::msgpack::msgpack_type::fixext4_type: 
+                case jsoncons::msgpack::msgpack_type::fixext8_type: 
+                case jsoncons::msgpack::msgpack_type::fixext16_type: 
+                case jsoncons::msgpack::msgpack_type::ext8_type: 
+                case jsoncons::msgpack::msgpack_type::ext16_type: 
+                case jsoncons::msgpack::msgpack_type::ext32_type: 
+                {
+                    std::size_t len = get_size(type,ec);
+                    if (!more_)
+                    {
+                        return;
+                    }
+
+                    // type
+                    uint8_t buf[sizeof(int8_t)];
+                    if (source_.read(buf, sizeof(int8_t)) != sizeof(int8_t))
+                    {
+                        ec = msgpack_errc::unexpected_eof;
+                        more_ = false;
+                        return;
+                    }
+
+                    int8_t ext_type = binary::big_to_native<int8_t>(buf, sizeof(buf));
+
+                    bool is_timestamp = false; 
+                    if (ext_type == -1)
+                    {
+                        is_timestamp = true;;
+                    }
+
+                    // payload
+                    if (is_timestamp && len == 4)
+                    {
+                        uint8_t buf32[sizeof(uint32_t)];
+                        if (source_.read(buf32, sizeof(uint32_t)) != sizeof(uint32_t))
+                        {
+                            ec = msgpack_errc::unexpected_eof;
+                            more_ = false;
+                            return;
+                        }
+                        uint32_t val = binary::big_to_native<uint32_t>(buf32, sizeof(buf32));
+                        more_ = visitor.uint64_value(val, semantic_tag::epoch_second, *this, ec);
+                    }
+                    else if (is_timestamp && len == 8)
+                    {
+                        uint8_t buf64[sizeof(uint64_t)];
+                        if (source_.read(buf64, sizeof(uint64_t)) != sizeof(uint64_t))
+                        {
+                            ec = msgpack_errc::unexpected_eof;
+                            more_ = false;
+                            return;
+                        }
+                        uint64_t data64 = binary::big_to_native<uint64_t>(buf64, sizeof(buf64));
+                        uint64_t sec = data64 & 0x00000003ffffffffL;
+                        uint64_t nsec = data64 >> 34;
+
+                        bigint nano(sec);
+                        nano *= uint64_t(nanos_in_second);
+                        nano += nsec;
+                        text_buffer_.clear();
+                        nano.write_string(text_buffer_);
+                        more_ = visitor.string_value(text_buffer_, semantic_tag::epoch_nano, *this, ec);
+                        if (!more_) return;
+                    }
+                    else if (is_timestamp && len == 12)
+                    {
+                        uint8_t buf1[sizeof(uint32_t)];
+                        if (source_.read(buf1, sizeof(uint32_t)) != sizeof(uint32_t))
+                        {
+                            ec = msgpack_errc::unexpected_eof;
+                            more_ = false;
+                            return;
+                        }
+                        uint32_t nsec = binary::big_to_native<uint32_t>(buf1, sizeof(buf1));
+
+                        uint8_t buf2[sizeof(int64_t)];
+                        if (source_.read(buf2, sizeof(int64_t)) != sizeof(int64_t))
+                        {
+                            ec = msgpack_errc::unexpected_eof;
+                            more_ = false;
+                            return;
+                        }
+                        int64_t sec = binary::big_to_native<int64_t>(buf2, sizeof(buf2));
+
+                        bigint nano(sec);
+
+                        nano *= uint64_t(nanos_in_second);
+
+                        if (nano < 0)
+                        {
+                            nano -= nsec;
+                        }
+                        else
+                        {
+                            nano += nsec;
+                        }
+
+                        text_buffer_.clear();
+                        nano.write_string(text_buffer_);
+                        more_ = visitor.string_value(text_buffer_, semantic_tag::epoch_nano, *this, ec);
+                        if (!more_) return;
+                    }
+                    else
+                    {
+                        bytes_buffer_.clear();
+                        if (source_reader<Source>::read(source_,bytes_buffer_,len) != static_cast<std::size_t>(len))
+                        {
+                            ec = msgpack_errc::unexpected_eof;
+                            more_ = false;
+                            return;
+                        }
+
+                        more_ = visitor.byte_string_value(byte_string_view(bytes_buffer_.data(),bytes_buffer_.size()), 
+                                                          static_cast<uint8_t>(ext_type), 
+                                                          *this,
+                                                          ec);
+                    }
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::array16_type: 
+                case jsoncons::msgpack::msgpack_type::array32_type: 
+                {
+                    begin_array(visitor,type,ec);
+                    break;
+                }
+
+                case jsoncons::msgpack::msgpack_type::map16_type : 
+                case jsoncons::msgpack::msgpack_type::map32_type : 
+                {
+                    begin_object(visitor, type, ec);
+                    break;
+                }
+
+                default:
+                {
+                    ec = msgpack_errc::unknown_type;
+                    more_ = false;
+                    return;
+                }
+            }
+        }
+    }
+
+    void begin_array(json_visitor2& visitor, uint8_t type, std::error_code& ec)
+    {
+        if (JSONCONS_UNLIKELY(++nesting_depth_ > options_.max_nesting_depth()))
+        {
+            ec = msgpack_errc::max_nesting_depth_exceeded;
+            more_ = false;
+            return;
+        } 
+        std::size_t length = get_size(type, ec);
+        if (!more_)
+        {
+            return;
+        }
+        state_stack_.emplace_back(parse_mode::array,length);
+        more_ = visitor.begin_array(length, semantic_tag::none, *this, ec);
+    }
+
+    void end_array(json_visitor2& visitor, std::error_code& ec)
+    {
+        --nesting_depth_;
+
+        more_ = visitor.end_array(*this, ec);
+        state_stack_.pop_back();
+    }
+
+    void begin_object(json_visitor2& visitor, uint8_t type, std::error_code& ec)
+    {
+        if (JSONCONS_UNLIKELY(++nesting_depth_ > options_.max_nesting_depth()))
+        {
+            ec = msgpack_errc::max_nesting_depth_exceeded;
+            more_ = false;
+            return;
+        } 
+        std::size_t length = get_size(type, ec);
+        if (!more_)
+        {
+            return;
+        }
+        state_stack_.emplace_back(parse_mode::map_key,length);
+        more_ = visitor.begin_object(length, semantic_tag::none, *this, ec);
+    }
+
+    void end_object(json_visitor2& visitor, std::error_code& ec)
+    {
+        --nesting_depth_;
+        more_ = visitor.end_object(*this, ec);
+        state_stack_.pop_back();
+    }
+
+    std::size_t get_size(uint8_t type, std::error_code& ec)
+    {
+        switch (type)
+        {
+            case jsoncons::msgpack::msgpack_type::str8_type: 
+            case jsoncons::msgpack::msgpack_type::bin8_type: 
+            case jsoncons::msgpack::msgpack_type::ext8_type: 
+            {
+                uint8_t buf[sizeof(int8_t)];
+                if (source_.read(buf, sizeof(int8_t)) != sizeof(int8_t))
+                {
+                    ec = msgpack_errc::unexpected_eof;
+                    more_ = false;
+                    return 0;
+                }
+                uint8_t len = binary::big_to_native<uint8_t>(buf, sizeof(buf));
+                return static_cast<std::size_t>(len);
+            }
+
+            case jsoncons::msgpack::msgpack_type::str16_type: 
+            case jsoncons::msgpack::msgpack_type::bin16_type: 
+            case jsoncons::msgpack::msgpack_type::ext16_type: 
+            case jsoncons::msgpack::msgpack_type::array16_type: 
+            case jsoncons::msgpack::msgpack_type::map16_type:
+            {
+                uint8_t buf[sizeof(int16_t)];
+                if (source_.read(buf, sizeof(int16_t)) != sizeof(int16_t))
+                {
+                    ec = msgpack_errc::unexpected_eof;
+                    more_ = false;
+                    return 0;
+                }
+                uint16_t len = binary::big_to_native<uint16_t>(buf, sizeof(buf));
+                return static_cast<std::size_t>(len);
+            }
+
+            case jsoncons::msgpack::msgpack_type::str32_type: 
+            case jsoncons::msgpack::msgpack_type::bin32_type: 
+            case jsoncons::msgpack::msgpack_type::ext32_type: 
+            case jsoncons::msgpack::msgpack_type::array32_type: 
+            case jsoncons::msgpack::msgpack_type::map32_type : 
+            {
+                uint8_t buf[sizeof(int32_t)];
+                if (source_.read(buf, sizeof(int32_t)) != sizeof(int32_t))
+                {
+                    ec = msgpack_errc::unexpected_eof;
+                    more_ = false;
+                    return 0;
+                }
+                uint32_t len = binary::big_to_native<uint32_t>(buf, sizeof(buf));
+                return static_cast<std::size_t>(len);
+            }
+            case jsoncons::msgpack::msgpack_type::fixext1_type: 
+                return 1;
+            case jsoncons::msgpack::msgpack_type::fixext2_type: 
+                return 2;
+            case jsoncons::msgpack::msgpack_type::fixext4_type: 
+                return 4;
+            case jsoncons::msgpack::msgpack_type::fixext8_type: 
+                return 8;
+            case jsoncons::msgpack::msgpack_type::fixext16_type: 
+                return 16;
+            default:
+                if ((type > 0x8f && type <= 0x9f) // fixarray
+                    || (type > 0x7f && type <= 0x8f) // fixmap
+                   )
+                {
+                    return type & 0x0f;
+                }
+                else
+                {
+                    ec = msgpack_errc::unknown_type;
+                    more_ = false;
+                    return 0;
+                }
+                break;
+        }
+    }
+};
+
+}}
+
+#endif