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lib/path: #138 c2-stack buffer port — buffer/push/appendnorm/appendlit/string/isroot/set + dot/dotdot, cstage @test

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Faithful realignment of lib/path to Hare's buffer-centric API
(ref/hare/path/{stack,buffer}.ha). Replaces the old str-only path.ww
wholesale (zero consumers). Scope = stack-core: init() deferred (returns
~4KB (buffer|error), rides the #40 arc / #147); abs/dirname/basename land
in c3; extension/join dropped.

appendlit uses the #145 slice-copy-assign arm (buf.buf[lo:hi]=bs), no hand
loop. dot/dotdot are faithful module-global []u8 (D2 #148). MAX =
os.PATH_MAX-1. Divergences (size->i32 indices, frombytes, module-global
consts) cited inline.

Tests: lib/path/pathtest.ww (table-driven), wired at test/wcc/989_path_run.c;
push rows mirror stack.ha:107-111 verbatim incl the restored "/d"
intermediate. Slot 989 (overflow bucket) since 970 is taken.

C-first: cstage @test green; wwstage byte-id deferred to the #125 batch.
path classified M_WWREJECT in 989_lib_byteid (w6c_ww rejects the module-
global slice consts = #120/#29; + the #148 twin #151) — self-graduates back
to M_ID the day wwstage accepts. path moved off the 900_stdlib standalone
list (import-dependent: os.PATH_MAX def-dim + match over imported error
types; coverage at 989_path_run), per the bytes/fmt/os precedent.

Gate: all 324 passed, byte-id 990-997 green, w6c/w6c_ww unchanged
(lib-only, non-embedded).
This commit is contained in:
Hojun-Cho
2026-06-08 11:25:11 +09:00
parent 26d6e2abad
commit 16f47da916
6 changed files with 310 additions and 119 deletions
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8
test/wcc/989_lib_byteid.c
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@@ -107,8 +107,14 @@ static const struct ent ents[] = {
/* fixtureless modules, import-probe shape */
{ .probe = "package main;\nimport sort;\nfn main() i32 = { return 0; };\n",
.mode = M_ID, .sentinel = "package sort;", .moddir = "lib/sort" },
/* c2-stack path::buffer realignment: w6c compiles, w6c_ww rejects
* path's module-global slice consts (const dot/dotdot: []u8) = the
* #120/#29 acceptance divergence (module-level composite globals);
* + the #148 twin #151 (global []u8 by-value arg). Both → #125
* batch. cstage runtime is covered by 989_path_run. M_WWREJECT
* self-graduates: flips RED to M_ID the day wwstage accepts this. */
{ .probe = "package main;\nimport path;\nfn main() i32 = { return 0; };\n",
.mode = M_ID, .sentinel = "package path;", .moddir = "lib/path" },
.mode = M_WWREJECT, .cite = "#120/#29", .sentinel = "package path;", .moddir = "lib/path" },
{ .probe = "package main;\nimport endian;\nfn main() i32 = { return 0; };\n",
.mode = M_ID, .sentinel = "package endian;", .moddir = "lib/endian" },
{ .probe = "package main;\nimport net;\nfn main() i32 = { return 0; };\n",