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// Copyright 2017 Daniel Parkerstd
// 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_CBOR_DECODE_CBOR_HPP
#define JSONCONS_CBOR_DECODE_CBOR_HPP
#include <string>
#include <vector>
#include <memory>
#include <type_traits> // std::enable_if
#include <istream> // std::basic_istream
#include <jsoncons/json.hpp>
#include <jsoncons/json_filter.hpp>
#include <jsoncons/decode_traits.hpp>
#include <jsoncons/config/jsoncons_config.hpp>
#include <jsoncons_ext/cbor/cbor_reader.hpp>
#include <jsoncons_ext/cbor/cbor_cursor.hpp>
namespace jsoncons {
namespace cbor {
template<class T, class Source>
typename std::enable_if<type_traits::is_basic_json<T>::value &&
type_traits::is_byte_sequence<Source>::value,T>::type
decode_cbor(const Source& v,
const cbor_decode_options& options = cbor_decode_options())
{
jsoncons::json_decoder<T> decoder;
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
basic_cbor_reader<jsoncons::bytes_source> reader(v, adaptor, options);
reader.read();
if (!decoder.is_valid())
{
JSONCONS_THROW(ser_error(conv_errc::conversion_failed, reader.line(), reader.column()));
}
return decoder.get_result();
}
template<class T, class Source>
typename std::enable_if<!type_traits::is_basic_json<T>::value &&
type_traits::is_byte_sequence<Source>::value,T>::type
decode_cbor(const Source& v,
const cbor_decode_options& options = cbor_decode_options())
{
basic_cbor_cursor<bytes_source> cursor(v, options);
json_decoder<basic_json<char,sorted_policy>> decoder{};
std::error_code ec;
T val = decode_traits<T,char>::decode(cursor, decoder, ec);
if (ec)
{
JSONCONS_THROW(ser_error(ec, cursor.context().line(), cursor.context().column()));
}
return val;
}
template<class T>
typename std::enable_if<type_traits::is_basic_json<T>::value,T>::type
decode_cbor(std::istream& is,
const cbor_decode_options& options = cbor_decode_options())
{
jsoncons::json_decoder<T> decoder;
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
cbor_stream_reader reader(is, adaptor, options);
reader.read();
if (!decoder.is_valid())
{
JSONCONS_THROW(ser_error(conv_errc::conversion_failed, reader.line(), reader.column()));
}
return decoder.get_result();
}
template<class T>
typename std::enable_if<!type_traits::is_basic_json<T>::value,T>::type
decode_cbor(std::istream& is,
const cbor_decode_options& options = cbor_decode_options())
{
basic_cbor_cursor<binary_stream_source> cursor(is, options);
json_decoder<basic_json<char,sorted_policy>> decoder{};
std::error_code ec;
T val = decode_traits<T,char>::decode(cursor, decoder, ec);
if (ec)
{
JSONCONS_THROW(ser_error(ec, cursor.context().line(), cursor.context().column()));
}
return val;
}
template<class T, class InputIt>
typename std::enable_if<type_traits::is_basic_json<T>::value,T>::type
decode_cbor(InputIt first, InputIt last,
const cbor_decode_options& options = cbor_decode_options())
{
jsoncons::json_decoder<T> decoder;
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
basic_cbor_reader<binary_iterator_source<InputIt>> reader(binary_iterator_source<InputIt>(first, last), adaptor, options);
reader.read();
if (!decoder.is_valid())
{
JSONCONS_THROW(ser_error(conv_errc::conversion_failed, reader.line(), reader.column()));
}
return decoder.get_result();
}
template<class T, class InputIt>
typename std::enable_if<!type_traits::is_basic_json<T>::value,T>::type
decode_cbor(InputIt first, InputIt last,
const cbor_decode_options& options = cbor_decode_options())
{
basic_cbor_cursor<binary_iterator_source<InputIt>> cursor(binary_iterator_source<InputIt>(first, last), options);
json_decoder<basic_json<char,sorted_policy>> decoder{};
std::error_code ec;
T val = decode_traits<T,char>::decode(cursor, decoder, ec);
if (ec)
{
JSONCONS_THROW(ser_error(ec, cursor.context().line(), cursor.context().column()));
}
return val;
}
// With leading allocator parameter
template<class T, class Source, class TempAllocator>
typename std::enable_if<type_traits::is_basic_json<T>::value &&
type_traits::is_byte_sequence<Source>::value,T>::type
decode_cbor(temp_allocator_arg_t, const TempAllocator& temp_alloc,
const Source& v,
const cbor_decode_options& options = cbor_decode_options())
{
json_decoder<T,TempAllocator> decoder(temp_alloc);
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
basic_cbor_reader<jsoncons::bytes_source,TempAllocator> reader(v, adaptor, options, temp_alloc);
reader.read();
if (!decoder.is_valid())
{
JSONCONS_THROW(ser_error(conv_errc::conversion_failed, reader.line(), reader.column()));
}
return decoder.get_result();
}
template<class T, class Source, class TempAllocator>
typename std::enable_if<!type_traits::is_basic_json<T>::value &&
type_traits::is_byte_sequence<Source>::value,T>::type
decode_cbor(temp_allocator_arg_t, const TempAllocator& temp_alloc,
const Source& v,
const cbor_decode_options& options = cbor_decode_options())
{
basic_cbor_cursor<bytes_source,TempAllocator> cursor(v, options, temp_alloc);
json_decoder<basic_json<char,sorted_policy,TempAllocator>,TempAllocator> decoder(temp_alloc, temp_alloc);
std::error_code ec;
T val = decode_traits<T,char>::decode(cursor, decoder, ec);
if (ec)
{
JSONCONS_THROW(ser_error(ec, cursor.context().line(), cursor.context().column()));
}
return val;
}
template<class T,class TempAllocator>
typename std::enable_if<type_traits::is_basic_json<T>::value,T>::type
decode_cbor(temp_allocator_arg_t, const TempAllocator& temp_alloc,
std::istream& is,
const cbor_decode_options& options = cbor_decode_options())
{
json_decoder<T,TempAllocator> decoder(temp_alloc);
auto adaptor = make_json_visitor_adaptor<json_visitor>(decoder);
basic_cbor_reader<jsoncons::binary_stream_source,TempAllocator> reader(is, adaptor, options, temp_alloc);
reader.read();
if (!decoder.is_valid())
{
JSONCONS_THROW(ser_error(conv_errc::conversion_failed, reader.line(), reader.column()));
}
return decoder.get_result();
}
template<class T,class TempAllocator>
typename std::enable_if<!type_traits::is_basic_json<T>::value,T>::type
decode_cbor(temp_allocator_arg_t, const TempAllocator& temp_alloc,
std::istream& is,
const cbor_decode_options& options = cbor_decode_options())
{
basic_cbor_cursor<binary_stream_source,TempAllocator> cursor(is, options, temp_alloc);
json_decoder<basic_json<char,sorted_policy,TempAllocator>,TempAllocator> decoder(temp_alloc, temp_alloc);
std::error_code ec;
T val = decode_traits<T,char>::decode(cursor, decoder, ec);
if (ec)
{
JSONCONS_THROW(ser_error(ec, cursor.context().line(), cursor.context().column()));
}
return val;
}
} // namespace cbor
} // namespace jsoncons
#endif
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