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a6abac22d8
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lib/bytes+test: Hare port (equal / index / rindex / contains / has{prefix,suffix} / reverse / zero)
Mirrors ref/hare/bytes/{equal,index,contains,reverse,zero}.ha for
the in-tree subset used by lib/encoding, lib/bufio, lib/memio;
converts 4 hextest sites from local beq to bytes.equal and drops
the now-dead beq in utf8test.
Surface:
- equal(a, b: []u8) bool
- index(s: []u8, needle: (u8 | []u8)) (i32 | void)
- rindex(s: []u8, needle: (u8 | []u8)) (i32 | void)
- contains(s: []u8, needle: (u8 | []u8)) bool
- hasprefix(s, pre: []u8) bool
- hassuffix(s, suf: []u8) bool
- reverse(s: []u8) void (already present, citation added)
- zero(s: []u8) void (already present, citation added)
Two documented Hare-fidelity gaps (cited in lib/bytes/bytes.ww
header, no in-tree caller demands them yet):
- index_slice / rindex_slice use naive O(n·m). Hare specialises
2/3/4-byte needles + falls back to Crochemore-Perrin two-way
(ref/hare/bytes/two_way.ha). Correctness equivalent.
- contains takes a single needle. Hare uses variadic
needle: (u8 | []u8)... (ref/hare/bytes/contains.ha:5).
Tests: 967_bytes_run drives lib/bytes/bytestest.ww via ww run.
Eight @test fns × table-driven row sets: equal (5), index_byte
(5), index_slice (10), rindex_byte (3), rindex_slice (3),
contains (4), hasprefix (6 verbatim from contains.ha:25),
hassuffix (6 verbatim from contains.ha:40).
Call-site conversions in the same commit (the conversions are
the proof the API is wired): lib/encoding/hex/hextest.ww drops
the local beq helper and 4 callers switch to bytes.equal;
lib/encoding/utf8/utf8test.ww drops the dead beq helper.
91/91 ok. 995_self_rebuild stays green (ww2==ww3==ww4 byte-id).
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2026-05-18 00:48:14 +09:00 |
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a8561c03a0
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lib/encoding/hex+test: Hare port (encode / decode / sizes)
Replaces the 19-line placeholder. Five entrypoints per
ref/hare/encoding/hex/hex.ha + README:13:
- invalid (!void) — mirrors errors::invalid (hex.ha:175 decodestr).
base32's !i32 is a pre-existing in-tree divergence; hex doesn't
carry it forward.
- encodedsize(n) = n*2 — derived from hex.ha:46-55 encode_writer
lowercase 2-chars-per-byte.
- decodedsize(n) = n/2 — inverse; hex.ha:158.
- encode(dst, src) i32 — lowercase output per README:13 + hex.ha:91.
- decode(dst, src) (i32 | invalid) — accepts lower / upper / mixed;
returns invalid on odd length (hex.ha:154) or non-hex char
(hex.ha:161-163).
Deferred (cite-and-defer, same pattern as base32/base64):
- newencoder / newdecoder — Hare's io::handle stream API; ww has no
io::handle integration yet.
- encodestr / decodestr — allocator-returning sum-result; needs
os.alloc-backed memio dynamic, not wired.
- dump — hexdump-with-ASCII view; needs io::handle + fmt::fprintf
into a write sink.
Test: lib/encoding/hex/hextest.ww 13 rows — sizes, encode_basic
(Hare's CAFEBABEDEADF00D verbatim), encode_zero / encode_ff /
encode_empty (nibble corners + sign-extend + table off-by-one),
decode_{lower,upper,mixed} (case acceptance), decode_{empty,
odd_length,bad_char,bad_char_mid} (error paths), roundtrip_all_bytes
(0..255 full nibble+shift family — Class B exerciser).
Driver test/wcc/979_hex_run.c slotted between 978_intdiv_signed and
980_memio_run.
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2026-05-17 07:07:57 +09:00 |
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