Custom encoder hooks: Types can implement cborEncode(writer: *Io.Writer) !void
to control their own serialisation.
Custom extractor hooks: Types can implement cborExtract(iter: *[]const u8) !bool
to control their own deserialisation. Enum types are
now also supported via cborExtract.
extractAlloc: New allocating extractor for types containing slices
or heap-allocated payloads. Use extractAlloc(&dest, allocator) inside a match pattern.
extractAlloc arrays: extractAlloc now handles []T slices,
allocating and populating each element.
Struct and union extraction: extract and extractAlloc now handle
structs (decoded from CBOR maps) and tagged unions (decoded from
two-element CBOR arrays of [tag, payload]). Enum extraction is also
supported.
fmtBuf: New fmtBuf(buf, value) ![]const u8 — like fmt but
returns error.NoSpaceLeft instead of panicking on overflow.
fmt explicit panic: fmt now calls @panic("cbor.fmt: buffer too small")
on overflow rather than catch unreachable.
Non-u8 slice matching: match now supports patterns of the form &[_]T{...} for slices and arrays where the element type is not u8.
writeJsonValue arrays and objects: writeJsonValue now handles json.Value.array and json.Value.object.
More explicit error handling: Errors that were previously collapsed
are now surfaced with distinct error values.
Bug Fixes
matchArray non-match: matchArray was incorrectly returning an
error on a type mismatch instead of false.
decodeMapHeader error type: Corrected the error return type to
include all possible errors.
Missing NotAnObject error: Added missing error variant to the error
set.
extract optional null: Extracting a null CBOR value into a
non-allocating optional now correctly sets the destination to null.
extractAlloc optional null: Same fix for the allocating extractor
path.
extractAllocjson.Value arrays/objects: Fell through to
union-match logic and failed. Now handled via matchJsonValue with the
real allocator.
decodeNInt overflow: Decoding large negative integers (magnitude > maxInt(i64)) would panic. Now returns error.IntegerTooSmall.
skipValue truncated floats: Calling skipValue on a truncated
float16/32/64 would panic. Now returns error.TooShort.
matchJsonValue floats: Float values were silently dropped during
CBOR→json.Value extraction. All three widths now decoded correctly.
writeValue large unsigned integers: Unsigned integers wider than i64 were encoded incorrectly due to signed overflow.
matchStructScalar / matchStructAlloc: A short read returned false instead of propagating error.TooShort, masking corruption as a
non-match.
Performance
writeTypedVal: Single writer.write call instead of multiple
single-byte writes.
Float encoding: writeF16/writeF32/writeF64 each issue a single
write using std.mem.writeInt (also fixes a latent big-endian bug in the
previous manual byte-swap code).
decodeUIntLength: Replaced recursive implementation with an
iterative one.
fromJson / fromJsonAlloc: A single allocator is now threaded
through the entire JSON parse instead of creating a new arena per nested
container.
neurocyte released this
