Added

• Add yyjson_write_number() and yyjson_mut_write_number() to write a number value to a string buffer.
• Add YYJSON_READ_ALLOW_EXT_NUMBER to support extended number formats, such as 0x7B, +.123.
• Add YYJSON_READ_ALLOW_EXT_ESCAPE to support extended escape, such as \a, \0, \x7B.
• Add YYJSON_READ_ALLOW_EXT_WHITESPACE to support extended whitespace, such as \v, \u2028.
• Add YYJSON_READ_ALLOW_SINGLE_QUOTED_STR to support single-quoted strings, such as 'ab'.
• Add YYJSON_READ_ALLOW_UNQUOTED_KEY to allow unquoted keys, such as {a:1,b:2}.
• Add YYJSON_READ_JSON5 to enable full JSON5 support.

Changed

• Removed support for non-standard JSON in the incremental reader yyjson_incr_read().

Fixed

• Fix errors when unaligned access is disallowed (no impact if your build was already successful).

Added

• Add YYJSON_READ_ALLOW_BOM flag to allow UTF-8 BOM.
• Add YYJSON_WRITE_FP_TO_FLOAT flag to write real numbers using single-precison.
• Add YYJSON_WRITE_FP_TO_FIXED(prec) flag to write real numbers using fix-point notation.
• Add set_fp_to_float() and set_fp_to_fixed() functions to control the output format of a specific number.
• Add set_str_noesc() function to skip escaping for a specific string during writing.
• Add yyjson_incr_read(), yyjson_incr_new(), yyjson_incr_free() functions for incremental DOM reading.

Changed

• Rewrite the floating-point number to string functions with a new fast path.
• When comments are allowed, return UNEXPECTED_END instead of INVALID_COMMENT for unclosed comments.
• Truncated escape sequences now report the error position at the sequence start rather than the end.

Fixed

• Fix some warnings when directly including yyjson.c: #177
• Fix missing indent for YYJSON_TYPE_RAW in prettify function: #178
• Fix bug in yyjson_mut_arr_iter_remove(): #194
• Fix clang 19 documentation warnings.
• Fix cmake 4 and cmake 3.5 warnings.

Added

• Add yyjson_locate_pos() function to locate the line and column number for error position: #166

Changed

• Improve error messages for JSON reader: #168

Fixed

• Fix YYJSON_READ_NUMBER_AS_RAW not overriding YYJSON_READ_BIGNUM_AS_RAW as per documentation: #170

Added

• Add YYJSON_WRITE_NEWLINE_AT_END flag for JSON writer: #147

Changed

• Add auto-type conversion (uint<->sint) to yyjson_ptr_get_uint/sint(): #152

Fixed

• Fix incorrect output in environments lacking native bool type support: #161

Added

• Add YYJSON_SUBTYPE_NOESC subtype to mark strings that do not need to be escaped.
• Add YYJSON_DISABLE_UTF8_VALIDATION flag to allow disabling UTF-8 validation at compile-time.
• Add dynamic allocator API: yyjson_alc_dyn_new() and yyjson_alc_dyn_free().
• Add the missing API yyjson_mut_obj_add_arr() and yyjson_mut_obj_add_obj(): #140

Changed

• Improve the write performance of strings with YYJSON_SUBTYPE_NOESC.

Fixed

• Fix clang-16 valgrind fail: #134
• Fix compile break when both FAST_FP and READER are disabled

Added

• Add YYJSON_WRITE_PRETTY_TWO_SPACES option to allow 2 spaces instead of 4 spaces when writing pretty JSON: #99
• Add YYJSON_READ_BIGNUM_AS_RAW option to read big numbers as raw strings: #124
• Add yyjson_get_num() function to convert and return any number value as double: #108
• Add support for Loongarch: #112
• Add functions to get type-specific values specified by JSON Pointer: #116
• Add functions to read/write JSON with file pointer FILE *: #122
• Add functions to support modifying memory pool size of yyjson_mut_doc.
• Add convenience functions iter_with() for creating iterator.
• Add functions to modify JSON using JSON Pointer, such as ptr_set() and ptr_remove().
• Add support for JSON Patch (RFC 6902).

Changed

• BREAKING CHANGE: Change the allocator's realloc function signature, add old_size parameter for custom allocator: #100
• BREAKING CHANGE: Change yyjson_read_number() function, add alc parameter.
• DEPRECATED: Deprecate get_pointer() functions, rename to ptr_get().
• Improve performance of yyjson_mut_write() function.

Fixed

• Fix inaccurate error code for truncated JSON: #103

Added

• Add functions to modify the content of a JSON value, for example yyjson_set_int(yyjson_val *val, int num).
• Add functions to copy from mutable doc to immutable doc.
• Add functions to support renaming an object's key.
• Add the yyjson_read_number() function to parse numeric strings.
• Add a placeholder allocator if yyjson_alc_pool_init() fails.

Fixed

• Fix quite NaN on MIPS and HPPA arch.
• Fixed compile error before GCC 4.5 which doesn't support empty optional extended asm label.
• When built-in floating point conversion is disabled, sprintf() output for floating point numbers is missing a decimal point, for example 123 should be 123.0.

Fixed

• Fix run-time error when compiling as cpp and 32-bit (g++-5 -m32 -fPIC) #85
• Fix incurrect output number format, remove unnecessary digits (e.g. 2.0e34 -> 2e34).

Added

• Add LibFuzzer support.
• Add Doxygen support.
• Add functions to support serializing a single JSON value.
• Add yyjson_mut_doc_mut_copy(), yyjson_mut_val_mut_copy(), yyjson_mut_merge_patch() function for mutable input.
• Add yyjson_equals() and yyjson_mut_equals() function to compare two values.
• Add yyjson_mut_obj_remove_key() and yyjson_mut_obj_remove_keyn() to make it easier to remove a key.
• Add YYJSON_READ_NUMBER_AS_RAW option and RAW type support.
• Add YYJSON_READ_ALLOW_INVALID_UNICODE and YYJSON_WRITE_ALLOW_INVALID_UNICODE options to allow invalid unicode.

Changed

• Change yyjson_mut_obj_remove() return type from bool to yyjson_mut_val *.
• Rewrite string serialization function, validate unicode encoding by default.
• Rewrite the JSON Pointer implementation, remove internal malloc() calls.

Fixed

• Make the code work correctly with setlocale() function and fast-math flag: #54
• Fix negative infinity literals read error: #64
• Fix non null-terminated string write error.
• Fix incorrect behavior of YYJSON_DISABLE_NON_STANDARD flag: #80