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lib/bytes+test: Hare port (equal / index / rindex / contains / has{prefix,suffix} / reverse / zero)

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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).
This commit is contained in:
Hojun-Cho
2026-05-18 00:48:14 +09:00
parent a7700f201b
commit a6abac22d8
6 changed files with 336 additions and 42 deletions
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49
test/wcc/967_bytes_run.c Normal file
View File

@@ -0,0 +1,49 @@
/*
* 967_bytes_run — execute the lib/bytes @test fixture under the
* C-side `ww run` driver and assert exit 0.
*
* Same thin-wrapper shape as 979_hex_run / 968_utf8_run:
* bytestest.ww carries its own `export fn main()` that drives the
* @test fns and signals which case failed via the exit code.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
static int
runwait(const char *cmd)
{
int rc = system(cmd);
if (rc == -1) return -1;
if (WIFEXITED(rc)) return WEXITSTATUS(rc);
return 1;
}
int
main(void)
{
const char *bin = getenv("BIN");
if (!bin) bin = "out/bin";
char absbin[1024];
if (bin[0] != '/') {
char cwd[1024];
if (getcwd(cwd, sizeof cwd) == NULL) return 1;
snprintf(absbin, sizeof absbin, "%s/%s", cwd, bin);
bin = absbin;
}
char cwd[1024];
if (getcwd(cwd, sizeof cwd) == NULL) return 1;
const char *src = "lib/bytes/bytestest.ww";
char path[1024], cmd[2048];
snprintf(path, sizeof path, "%s/%s", cwd, src);
snprintf(cmd, sizeof cmd, "%s/ww run %s", bin, path);
int rc = runwait(cmd);
if (rc != 0) {
fprintf(stderr, "bytes_run FAIL: %s exited %d\n", src, rc);
return 1;
}
printf("bytes_run: %s ok\n", src);
return 0;
}