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// Copyright 2013-2025 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_EXT_MSGPACK_DECODE_MSGPACK_HPP
#define JSONCONS_EXT_MSGPACK_DECODE_MSGPACK_HPP
#include <istream> // std::basic_istream
#include <type_traits> // std::enable_if
#include <jsoncons/allocator_set.hpp>
#include <jsoncons/config/compiler_support.hpp>
#include <jsoncons/utility/more_type_traits.hpp>
#include <jsoncons/basic_json.hpp>
#include <jsoncons/conv_error.hpp>
#include <jsoncons/reflect/decode_traits.hpp>
#include <jsoncons/ser_util.hpp>
#include <jsoncons/source.hpp>
#include <jsoncons_ext/msgpack/msgpack_cursor.hpp>
#include <jsoncons_ext/msgpack/msgpack_encoder.hpp>
#include <jsoncons_ext/msgpack/msgpack_reader.hpp>
namespace jsoncons {
namespace msgpack {
template <typename T,typename BytesLike>
typename std::enable_if<ext_traits::is_basic_json<T>::value &&
ext_traits::is_byte_sequence<BytesLike>::value,read_result<T>>::type
try_decode_msgpack(const BytesLike& v,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
jsoncons::json_decoder<T> decoder;
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
basic_msgpack_reader<jsoncons::bytes_source> reader(v, adaptor, options);
reader.read(ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, reader.line(), reader.column()};
}
if (JSONCONS_UNLIKELY(!decoder.is_valid()))
{
return result_type{jsoncons::unexpect, conv_errc::conversion_failed, reader.line(), reader.column()};
}
return result_type{decoder.get_result()};
}
template <typename T,typename BytesLike>
typename std::enable_if<!ext_traits::is_basic_json<T>::value &&
ext_traits::is_byte_sequence<BytesLike>::value,read_result<T>>::type
try_decode_msgpack(const BytesLike& v,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
basic_msgpack_cursor<bytes_source> cursor(v, options, ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, cursor.line(), cursor.column()};
}
return reflect::decode_traits<T>::try_decode(make_alloc_set(), cursor);
}
template <typename T>
typename std::enable_if<ext_traits::is_basic_json<T>::value,read_result<T>>::type
try_decode_msgpack(std::istream& is,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
jsoncons::json_decoder<T> decoder;
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
msgpack_stream_reader reader(is, adaptor, options);
reader.read(ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, reader.line(), reader.column()};
}
if (JSONCONS_UNLIKELY(!decoder.is_valid()))
{
return result_type{jsoncons::unexpect, conv_errc::conversion_failed, reader.line(), reader.column()};
}
return result_type{decoder.get_result()};
}
template <typename T>
typename std::enable_if<!ext_traits::is_basic_json<T>::value,read_result<T>>::type
try_decode_msgpack(std::istream& is,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
basic_msgpack_cursor<binary_stream_source> cursor(is, options, ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, cursor.line(), cursor.column()};
}
return reflect::decode_traits<T>::try_decode(make_alloc_set(), cursor);
}
template <typename T,typename InputIt>
typename std::enable_if<ext_traits::is_basic_json<T>::value,read_result<T>>::type
try_decode_msgpack(InputIt first, InputIt last,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
jsoncons::json_decoder<T> decoder;
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
basic_msgpack_reader<binary_iterator_source<InputIt>> reader(binary_iterator_source<InputIt>(first, last), adaptor, options);
reader.read(ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, reader.line(), reader.column()};
}
if (JSONCONS_UNLIKELY(!decoder.is_valid()))
{
return result_type{jsoncons::unexpect, conv_errc::conversion_failed, reader.line(), reader.column()};
}
return result_type{decoder.get_result()};
}
template <typename T,typename InputIt>
typename std::enable_if<!ext_traits::is_basic_json<T>::value,read_result<T>>::type
try_decode_msgpack(InputIt first, InputIt last,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
basic_msgpack_cursor<binary_iterator_source<InputIt>> cursor(binary_iterator_source<InputIt>(first, last), options, ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, cursor.line(), cursor.column()};
}
return reflect::decode_traits<T>::try_decode(make_alloc_set(), cursor);
}
// With leading allocator_set parameter
template <typename T,typename BytesLike,typename Alloc,typename TempAlloc >
typename std::enable_if<ext_traits::is_basic_json<T>::value &&
ext_traits::is_byte_sequence<BytesLike>::value,read_result<T>>::type
try_decode_msgpack(const allocator_set<Alloc,TempAlloc>& aset,
const BytesLike& v,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
json_decoder<T,TempAlloc> decoder(aset.get_allocator(), aset.get_temp_allocator());
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
basic_msgpack_reader<jsoncons::bytes_source,TempAlloc> reader(v, adaptor, options, aset.get_temp_allocator());
reader.read(ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, reader.line(), reader.column()};
}
if (JSONCONS_UNLIKELY(!decoder.is_valid()))
{
return result_type{jsoncons::unexpect, conv_errc::conversion_failed, reader.line(), reader.column()};
}
return result_type{decoder.get_result()};
}
template <typename T,typename BytesLike,typename Alloc,typename TempAlloc >
typename std::enable_if<!ext_traits::is_basic_json<T>::value &&
ext_traits::is_byte_sequence<BytesLike>::value,read_result<T>>::type
try_decode_msgpack(const allocator_set<Alloc,TempAlloc>& aset,
const BytesLike& v,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
basic_msgpack_cursor<bytes_source,TempAlloc> cursor(std::allocator_arg, aset.get_temp_allocator(), v, options, ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, cursor.line(), cursor.column()};
}
return reflect::decode_traits<T>::try_decode(aset, cursor);
}
template <typename T,typename Alloc,typename TempAlloc >
typename std::enable_if<ext_traits::is_basic_json<T>::value,read_result<T>>::type
try_decode_msgpack(const allocator_set<Alloc,TempAlloc>& aset,
std::istream& is,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
using byte_allocator_type = typename std::allocator_traits<TempAlloc>:: template rebind_alloc<uint8_t>;
using stream_source_type = stream_source<uint8_t,byte_allocator_type>;
std::error_code ec;
json_decoder<T,TempAlloc> decoder(aset.get_allocator(), aset.get_temp_allocator());
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
basic_msgpack_reader<stream_source_type,TempAlloc> reader(stream_source_type(is,aset.get_temp_allocator()),
adaptor, options, aset.get_temp_allocator());
reader.read(ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, reader.line(), reader.column()};
}
if (JSONCONS_UNLIKELY(!decoder.is_valid()))
{
return result_type{jsoncons::unexpect, conv_errc::conversion_failed, reader.line(), reader.column()};
}
return result_type{decoder.get_result()};
}
template <typename T,typename Alloc,typename TempAlloc >
typename std::enable_if<!ext_traits::is_basic_json<T>::value,read_result<T>>::type
try_decode_msgpack(const allocator_set<Alloc,TempAlloc>& aset,
std::istream& is,
const msgpack_decode_options& options = msgpack_decode_options())
{
using value_type = T;
using result_type = read_result<value_type>;
std::error_code ec;
basic_msgpack_cursor<binary_stream_source,TempAlloc> cursor(
std::allocator_arg, aset.get_temp_allocator(), is, options, ec);
if (JSONCONS_UNLIKELY(ec))
{
return result_type{jsoncons::unexpect, ec, cursor.line(), cursor.column()};
}
return reflect::decode_traits<T>::try_decode(aset, cursor);
}
template <typename T, typename... Args>
T decode_msgpack(Args&& ... args)
{
auto result = try_decode_msgpack<T>(std::forward<Args>(args)...);
if (!result)
{
JSONCONS_THROW(ser_error(result.error().code(), result.error().line(), result.error().column()));
}
return std::move(*result);
}
} // namespace msgpack
} // namespace jsoncons
#endif // JSONCONS_EXT_MSGPACK_DECODE_MSGPACK_HPP
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