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Fixes #2728

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includes some macros to be defined for using without file io.
This commit is contained in:
David Pfahler 2021-04-21 10:24:01 +02:00
parent db78ac1d77
commit 1a1381f071
3 changed files with 12 additions and 4 deletions
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4
include/nlohmann/detail/input/input_adapters.hpp
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@ -26,6 +26,7 @@ enum class input_format_t { json, cbor, msgpack, ubjson, bson };
// input adapters // // input adapters //
//////////////////// ////////////////////
#ifndef JSON_NO_IO
/*! /*!
Input adapter for stdio file access. This adapter read only 1 byte and do not use any Input adapter for stdio file access. This adapter read only 1 byte and do not use any
buffer. This adapter is a very low level adapter. buffer. This adapter is a very low level adapter.
@ -115,6 +116,7 @@ class input_stream_adapter
std::istream* is = nullptr; std::istream* is = nullptr;
std::streambuf* sb = nullptr; std::streambuf* sb = nullptr;
}; };
#endif // JSON_NO_IO
// General-purpose iterator-based adapter. It might not be as fast as // General-purpose iterator-based adapter. It might not be as fast as
// theoretically possible for some containers, but it is extremely versatile. // theoretically possible for some containers, but it is extremely versatile.
@ -381,6 +383,7 @@ auto input_adapter(const ContainerType& container) -> decltype(input_adapter(beg
return input_adapter(begin(container), end(container)); return input_adapter(begin(container), end(container));
} }
#ifndef JSON_NO_IO
// Special cases with fast paths // Special cases with fast paths
inline file_input_adapter input_adapter(std::FILE* file) inline file_input_adapter input_adapter(std::FILE* file)
{ {
@ -396,6 +399,7 @@ inline input_stream_adapter input_adapter(std::istream&& stream)
{ {
return input_stream_adapter(stream); return input_stream_adapter(stream);
} }
#endif // JSON_NO_IO
using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>())); using contiguous_bytes_input_adapter = decltype(input_adapter(std::declval<const char*>(), std::declval<const char*>()));

4
include/nlohmann/detail/output/output_adapters.hpp
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@ -50,6 +50,7 @@ class output_vector_adapter : public output_adapter_protocol<CharType>
std::vector<CharType>& v; std::vector<CharType>& v;
}; };
#ifndef JSON_NO_IO
/// output adapter for output streams /// output adapter for output streams
template<typename CharType> template<typename CharType>
class output_stream_adapter : public output_adapter_protocol<CharType> class output_stream_adapter : public output_adapter_protocol<CharType>
@ -73,6 +74,7 @@ class output_stream_adapter : public output_adapter_protocol<CharType>
private: private:
std::basic_ostream<CharType>& stream; std::basic_ostream<CharType>& stream;
}; };
#endif // JSON_NO_IO
/// output adapter for basic_string /// output adapter for basic_string
template<typename CharType, typename StringType = std::basic_string<CharType>> template<typename CharType, typename StringType = std::basic_string<CharType>>
@ -105,8 +107,10 @@ class output_adapter
output_adapter(std::vector<CharType>& vec) output_adapter(std::vector<CharType>& vec)
: oa(std::make_shared<output_vector_adapter<CharType>>(vec)) {} : oa(std::make_shared<output_vector_adapter<CharType>>(vec)) {}
#ifndef JSON_NO_IO
output_adapter(std::basic_ostream<CharType>& s) output_adapter(std::basic_ostream<CharType>& s)
: oa(std::make_shared<output_stream_adapter<CharType>>(s)) {} : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
#endif // JSON_NO_IO
output_adapter(StringType& s) output_adapter(StringType& s)
: oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {} : oa(std::make_shared<output_string_adapter<CharType, StringType>>(s)) {}

8
include/nlohmann/json.hpp
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@ -6521,7 +6521,7 @@ class basic_json
/// @name serialization /// @name serialization
/// @{ /// @{
#ifndef JSON_NO_IO
/*! /*!
@brief serialize to stream @brief serialize to stream
@ -6581,7 +6581,7 @@ class basic_json
{ {
return o << j; return o << j;
} }
#endif // JSON_NO_IO
/// @} /// @}
@ -6837,7 +6837,7 @@ class basic_json
? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict) ? parser(std::move(ia), nullptr, true, ignore_comments).sax_parse(sax, strict)
: detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict); : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia)).sax_parse(format, sax, strict);
} }
#ifndef JSON_NO_IO
/*! /*!
@brief deserialize from stream @brief deserialize from stream
@deprecated This stream operator is deprecated and will be removed in @deprecated This stream operator is deprecated and will be removed in
@ -6882,7 +6882,7 @@ class basic_json
parser(detail::input_adapter(i)).parse(false, j); parser(detail::input_adapter(i)).parse(false, j);
return i; return i;
} }
#endif // JSON_NO_IO
/// @} /// @}
/////////////////////////// ///////////////////////////