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Write binary formats through reserved sink space and number runs (#5885)

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Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann authored and GitHub committed 2026-10-23 06:52:58 +02:00
1 parent dec0e9b749
commit 6fa14d8f95
7 files changed
+4282 -440
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include/nlohmann/json.hpp
+42 -18
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@@ -6322,7 +6322,7 @@ public:
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
std::vector<std::uint8_t> result;
result.reserve(detail::binary_reserve_hint(j));
result.reserve(detail::binary_initial_capacity(j));
vector_writer(result, error_handler).write_cbor(j);
return result;
}
@@ -6332,7 +6332,9 @@ public:
static void to_cbor(const basic_json& j, detail::output_adapter<std::uint8_t> o,
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
binary_writer<std::uint8_t>(o, error_handler).write_cbor(j);
binary_writer<std::uint8_t> writer(o, error_handler);
writer.write_cbor(j);
writer.flush();
}
/// @brief create a CBOR serialization of a given JSON value
@@ -6340,7 +6342,9 @@ public:
static void to_cbor(const basic_json& j, detail::output_adapter<char> o,
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
binary_writer<char>(o, error_handler).write_cbor(j);
binary_writer<char> writer(o, error_handler);
writer.write_cbor(j);
writer.flush();
}
/// @brief create a MessagePack serialization of a given JSON value
@@ -6349,7 +6353,7 @@ public:
const error_handler_t error_handler = error_handler_t::keep)
{
std::vector<std::uint8_t> result;
result.reserve(detail::binary_reserve_hint(j));
result.reserve(detail::binary_initial_capacity(j));
vector_writer(result, error_handler).write_msgpack(j);
return result;
}
@@ -6359,7 +6363,9 @@ public:
static void to_msgpack(const basic_json& j, detail::output_adapter<std::uint8_t> o,
const error_handler_t error_handler = error_handler_t::keep)
{
binary_writer<std::uint8_t>(o, error_handler).write_msgpack(j);
binary_writer<std::uint8_t> writer(o, error_handler);
writer.write_msgpack(j);
writer.flush();
}
/// @brief create a MessagePack serialization of a given JSON value
@@ -6367,7 +6373,9 @@ public:
static void to_msgpack(const basic_json& j, detail::output_adapter<char> o,
const error_handler_t error_handler = error_handler_t::keep)
{
binary_writer<char>(o, error_handler).write_msgpack(j);
binary_writer<char> writer(o, error_handler);
writer.write_msgpack(j);
writer.flush();
}
/// @brief create a UBJSON serialization of a given JSON value
@@ -6378,7 +6386,7 @@ public:
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
std::vector<std::uint8_t> result;
result.reserve(detail::binary_reserve_hint(j));
result.reserve(detail::binary_initial_capacity(j));
vector_writer(result, error_handler).write_ubjson(j, use_size, use_type);
return result;
}
@@ -6389,7 +6397,9 @@ public:
const bool use_size = false, const bool use_type = false,
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
binary_writer<std::uint8_t>(o, error_handler).write_ubjson(j, use_size, use_type);
binary_writer<std::uint8_t> writer(o, error_handler);
writer.write_ubjson(j, use_size, use_type);
writer.flush();
}
/// @brief create a UBJSON serialization of a given JSON value
@@ -6398,7 +6408,9 @@ public:
const bool use_size = false, const bool use_type = false,
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
binary_writer<char>(o, error_handler).write_ubjson(j, use_size, use_type);
binary_writer<char> writer(o, error_handler);
writer.write_ubjson(j, use_size, use_type);
writer.flush();
}
/// @brief create a BJData serialization of a given JSON value
@@ -6410,7 +6422,7 @@ public:
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
std::vector<std::uint8_t> result;
result.reserve(detail::binary_reserve_hint(j));
result.reserve(detail::binary_initial_capacity(j));
vector_writer(result, error_handler).write_ubjson(j, use_size, use_type, true, true, version);
return result;
}
@@ -6422,7 +6434,9 @@ public:
const bjdata_version_t version = bjdata_version_t::draft2,
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
binary_writer<std::uint8_t>(o, error_handler).write_ubjson(j, use_size, use_type, true, true, version);
binary_writer<std::uint8_t> writer(o, error_handler);
writer.write_ubjson(j, use_size, use_type, true, true, version);
writer.flush();
}
/// @brief create a BJData serialization of a given JSON value
@@ -6432,7 +6446,9 @@ public:
const bjdata_version_t version = bjdata_version_t::draft2,
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
binary_writer<char>(o, error_handler).write_ubjson(j, use_size, use_type, true, true, version);
binary_writer<char> writer(o, error_handler);
writer.write_ubjson(j, use_size, use_type, true, true, version);
writer.flush();
}
/// @brief create a BSON serialization of a given JSON value
@@ -6441,7 +6457,7 @@ public:
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
std::vector<std::uint8_t> result;
result.reserve(detail::binary_reserve_hint(j));
result.reserve(detail::binary_initial_capacity(j));
vector_writer(result, error_handler).write_bson(j);
return result;
}
@@ -6451,7 +6467,9 @@ public:
static void to_bson(const basic_json& j, detail::output_adapter<std::uint8_t> o,
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
binary_writer<std::uint8_t>(o, error_handler).write_bson(j);
binary_writer<std::uint8_t> writer(o, error_handler);
writer.write_bson(j);
writer.flush();
}
/// @brief create a BSON serialization of a given JSON value
@@ -6459,7 +6477,9 @@ public:
static void to_bson(const basic_json& j, detail::output_adapter<char> o,
const error_handler_t error_handler = detail::binary_writer_default_error_handler())
{
binary_writer<char>(o, error_handler).write_bson(j);
binary_writer<char> writer(o, error_handler);
writer.write_bson(j);
writer.flush();
}
/// @brief create a BON8 serialization of a given JSON value
@@ -6467,7 +6487,7 @@ public:
static std::vector<std::uint8_t> to_bon8(const basic_json& j)
{
std::vector<std::uint8_t> result;
result.reserve(detail::binary_reserve_hint(j));
result.reserve(detail::binary_initial_capacity(j));
vector_writer(result).write_bon8(j);
return result;
}
@@ -6476,14 +6496,18 @@ public:
/// @sa https://json.nlohmann.me/api/basic_json/to_bon8/
static void to_bon8(const basic_json& j, detail::output_adapter<std::uint8_t> o)
{
binary_writer<std::uint8_t>(o).write_bon8(j);
binary_writer<std::uint8_t> writer(o);
writer.write_bon8(j);
writer.flush();
}
/// @brief create a BON8 serialization of a given JSON value
/// @sa https://json.nlohmann.me/api/basic_json/to_bon8/
static void to_bon8(const basic_json& j, detail::output_adapter<char> o)
{
binary_writer<char>(o).write_bon8(j);
binary_writer<char> writer(o);
writer.write_bon8(j);
writer.flush();
}
/// @brief create a JSON value from an input in CBOR format