lib: fmt fprint family over io.handle; remove the fdsink workaround (#5)

Graduates the fmt fprint family (fprint/fprintf/fprintln/fprintfln + internal putbytes/writeone/format*) from io.stream to io.handle, so a file (fd) prints directly through io.write's file-arm (commit-1). Removes the fdsink placeholder -- the fake-stream-vtable-over-os.write shim that stood in for the missing handle. The 8 stdio wrappers route over os.STD{OUT,ERR}_FILENO (new i32 filenos in lib/os; os is the import floor, so it can't hold an io.file-typed handle like Hare's os::stdout_file -- consumers cast i32 to io.file). Migrates the fd-shim sentinel tests 777/780/781 to fprint-over-handle as their headers designed, cstage-only per the pre-existing #209 (fmt is wwstage-uncompilable). Regenerates the 6 os-embedding combined.ww.
This commit is contained in:
2026-05-31 18:51:12 +09:00
parent 06c00e0e1b
commit 497f1fa0d3
15 changed files with 348 additions and 384 deletions

View File

@@ -0,0 +1,358 @@
/*
* 781_fmt_compositions_run — io fold-2 (#5) commit-2 sentinel. Pins the
* composition wrappers in lib/fmt/fmt.ww — fprintln / fprintfln /
* bsprintf / asprintf — plus the memio accessor (memio.string in
* lib/memio/memio.ww) they read back through. #5 graduated the
* fprint-family sink io.stream -> io.handle; the file-arm rows drive
* fprintln / fprintfln over `fd: io.file`, the stream-arm rows over a
* memio.fixed io.stream — both arms of io.handle.
*
* memio.string is the direct enabler: bsprintf reads its written prefix
* via memio.string; asprintf reads its grown buffer via the same
* accessor.
*
* row | what it pins
* --------------------+--------------------------------------
* fprintln_file_basic | fprintln(fd: io.file, 1, "hi", true)
* | over the file arm — space-separator plus
* | trailing newline byte content.
* fprintfln_file_fmt | fprintfln(fd: io.file, "x={}", 7) over the
* | file arm — placeholder substitution +
* | trailing newline.
* fprintln_basic | fmt.fprintln dispatched over a memio.fixed
* | io.stream (stream arm) + read back via
* | memio.string. Pins the composition symbol.
* fprintfln_basic | fmt.fprintfln over memio.fixed + memio.string,
* | same stream-arm rationale.
* bsprintf_basic | bsprintf into a caller-supplied [16]u8
* | buffer through memio.fixed; memio.string
* | returns the prefix view. Asserts both the
* | caller-buffer bytes AND the returned str view.
* asprintf_basic | asprintf into a heap-grown str through
* | memio.dynamic; memio.string + shrink-copy +
* | io.close. Asserts the owned str bytes, then
* | frees via os.free.
*
* Cstage-only per row (no STAGE_WW, no byte_id) — pre-existing wwstage
* bug #209 (sibling of #190): the wwstage checker bails `case: not a
* variant of scrutinee (X)` + `match: variant not handled
* (formattable)` on fmt.formattable match-arms whenever a downstream
* probe `import fmt;`s the package. Identical carve-out to
* 777_fmt_handle_run + 780_fmt_mods_run. Byte-id graduates with #209
* close.
*
* IMPORT-ORDER WORKAROUND (sibling task #208, pre-existing): every row
* places `import os;` FIRST for the same reason 776/777/780 document
* (wwstage checker ordering-sensitivity on os.tryread / trywrite /
* tryopen's bare `return r;` over a tagged return type).
*
* DEFERRALS / RELATED (NOT addressed by these rows):
*
* - #209 (wwstage formattable match-arm bail): blocks STAGE_WW here,
* same as 777/780. Cstage-only until close.
* - #173 (TRY-on-tagged-return both-stages broken): bsprintf widens
* nomem into io.error inline rather than `memio.fixed(buf)?` for
* the same reason memio.ww does.
*
* BOOTSTRAP-EMBED CHECK: fmt is NOT embedded in any selfhost
* combined.ww (grep verified). memio IS embedded in w6c + wwdump
* combined.ww but is unchanged by #5, so no regen rides along here.
* 990/994/995 byte-id gates stay green.
*
* GATE POLARITY: must stay GREEN. A red here means fprintln /
* fprintfln dropped the newline byte, bsprintf returned a stale
* memio.string view (intrusive cast broke), asprintf failed to
* shrink-copy / close cleanly, or the underlying fprint / fprintf
* primitives regressed over the io.handle sink.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.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;
}
#define STAGE_CS 1
#define STAGE_WW 2
struct row {
const char *label;
const char *src;
int want_exit;
int stage_mask;
int byte_id;
};
static const struct row rows[] = {
{ "fprintln_file_basic",
"package main;\n"
"import os;\n"
"import fmt;\n"
"import io;\n"
"export fn main() i32 = {\n"
" let path: str = \"/tmp/wwfmtc_781_a\";\n"
" let fd: i32 = os.open(path, os.flag.RDWR | os.flag.CREATE | os.flag.TRUNC, 0o644: i32);\n"
" if (fd < 0) { return 90; };\n"
" let wr = fmt.fprintln(fd: io.file, 1i64, \"hi\", true);\n"
" let nw: size = 0;\n"
" match (wr) {\n"
" case let n: size => { nw = n; };\n"
" case io.error => { return 91; };\n"
" };\n"
" os.close(fd);\n"
" let rd: i32 = os.open(path, os.flag.RDONLY, 0i32);\n"
" if (rd < 0) { return 92; };\n"
" let buf: [16]u8;\n"
" let n: i64 = os.read(rd, &buf[0], 16u64);\n"
" os.close(rd);\n"
" if (n != 10i64) { return 93; };\n"
" if (nw != 10: size) { return 94; };\n"
" if (buf[0] != 49u8) { return 95; };\n"
" if (buf[1] != 32u8) { return 96; };\n"
" if (buf[2] != 104u8 || buf[3] != 105u8) { return 97; };\n"
" if (buf[4] != 32u8) { return 98; };\n"
" if (buf[9] != 10u8) { return 99; };\n"
" return 60;\n"
"};\n",
60,
STAGE_CS, 0 },
{ "fprintfln_file_fmt",
"package main;\n"
"import os;\n"
"import fmt;\n"
"import io;\n"
"export fn main() i32 = {\n"
" let path: str = \"/tmp/wwfmtc_781_b\";\n"
" let fd: i32 = os.open(path, os.flag.RDWR | os.flag.CREATE | os.flag.TRUNC, 0o644: i32);\n"
" if (fd < 0) { return 90; };\n"
" let wr = fmt.fprintfln(fd: io.file, \"x={}\", 7i64);\n"
" let nw: size = 0;\n"
" match (wr) {\n"
" case let n: size => { nw = n; };\n"
" case io.error => { return 91; };\n"
" };\n"
" os.close(fd);\n"
" let rd: i32 = os.open(path, os.flag.RDONLY, 0i32);\n"
" if (rd < 0) { return 92; };\n"
" let buf: [16]u8;\n"
" let n: i64 = os.read(rd, &buf[0], 16u64);\n"
" os.close(rd);\n"
" if (n != 4i64) { return 93; };\n"
" if (nw != 4: size) { return 94; };\n"
" if (buf[0] != 120u8 || buf[1] != 61u8 || buf[2] != 55u8 || buf[3] != 10u8) { return 95; };\n"
" return 61;\n"
"};\n",
61,
STAGE_CS, 0 },
{ "fprintln_basic",
"package main;\n"
"import os;\n"
"import fmt;\n"
"import io;\n"
"import memio;\n"
"export fn main() i32 = {\n"
" let buf: [16]u8;\n"
" let st: memio.stream = memio.fixed(buf[0:16]);\n"
" let vs: io.stream = &st.vt;\n"
" let wr = fmt.fprintln(vs, 1i64, \"hi\", true);\n"
" let nw: size = 0;\n"
" match (wr) {\n"
" case let n: size => { nw = n; };\n"
" case io.error => { return 91; };\n"
" };\n"
" if (nw != 10: size) { return 92; };\n"
" let view: str = memio.string(&st);\n"
" if (view.len != 10) { return 93; };\n"
" if (view[0] != 49u8) { return 94; };\n"
" if (view[1] != 32u8) { return 95; };\n"
" if (view[2] != 104u8 || view[3] != 105u8) { return 96; };\n"
" if (view[9] != 10u8) { return 97; };\n"
" return 64;\n"
"};\n",
64,
STAGE_CS, 0 },
{ "fprintfln_basic",
"package main;\n"
"import os;\n"
"import fmt;\n"
"import io;\n"
"import memio;\n"
"export fn main() i32 = {\n"
" let buf: [16]u8;\n"
" let st: memio.stream = memio.fixed(buf[0:16]);\n"
" let vs: io.stream = &st.vt;\n"
" let wr = fmt.fprintfln(vs, \"x={}\", 7i64);\n"
" let nw: size = 0;\n"
" match (wr) {\n"
" case let n: size => { nw = n; };\n"
" case io.error => { return 91; };\n"
" };\n"
" if (nw != 4: size) { return 92; };\n"
" let view: str = memio.string(&st);\n"
" if (view.len != 4) { return 93; };\n"
" if (view[0] != 120u8 || view[1] != 61u8) { return 94; };\n"
" if (view[2] != 55u8 || view[3] != 10u8) { return 95; };\n"
" return 65;\n"
"};\n",
65,
STAGE_CS, 0 },
{ "bsprintf_basic",
"package main;\n"
"import os;\n"
"import fmt;\n"
"import io;\n"
"export fn main() i32 = {\n"
" let buf: [16]u8;\n"
" let r = fmt.bsprintf(buf[0:16], \"v={}\", 42i64);\n"
" let view: str = \"\";\n"
" match (r) {\n"
" case let s: str => { view = s; };\n"
" case io.error => { return 90; };\n"
" };\n"
" if (view.len != 4) { return 91; };\n"
" if (view[0] != 118u8 || view[1] != 61u8) { return 92; };\n"
" if (view[2] != 52u8 || view[3] != 50u8) { return 93; };\n"
" if (buf[0] != 118u8 || buf[3] != 50u8) { return 94; };\n"
" return 62;\n"
"};\n",
62,
STAGE_CS, 0 },
{ "asprintf_basic",
"package main;\n"
"import os;\n"
"import fmt;\n"
"import io;\n"
"export fn main() i32 = {\n"
" let view: str = fmt.asprintf(\"hello={}\", 9i64);\n"
" if (view.len != 7) { return 90; };\n"
" if (view[0] != 104u8 || view[1] != 101u8 || view[2] != 108u8) { return 91; };\n"
" if (view[3] != 108u8 || view[4] != 111u8) { return 92; };\n"
" if (view[5] != 61u8 || view[6] != 57u8) { return 93; };\n"
" os.free(view.ptr: *void, view.len: u64);\n"
" return 63;\n"
"};\n",
63,
STAGE_CS, 0 },
};
static int
write_source(const char *path, const char *src)
{
FILE *f = fopen(path, "wb");
if (!f) return -1;
fputs(src, f);
fclose(f);
return 0;
}
/* Per-row tmpdir cleanup. ww_ww writes intermediates next to the
* source (task #15), so each row's build leaves <src>.{combined.ww,
* s,o} + bare exe alongside. Mirror of 777/780's. */
static void
cleanup_tmp(const char *tmpdir, const char *base)
{
char p[640];
snprintf(p, sizeof p, "%s/%s.ww", tmpdir, base); unlink(p);
snprintf(p, sizeof p, "%s/%s.s", tmpdir, base); unlink(p);
snprintf(p, sizeof p, "%s/%s.o", tmpdir, base); unlink(p);
snprintf(p, sizeof p, "%s/%s.combined.ww", tmpdir, base); unlink(p);
snprintf(p, sizeof p, "%s/%s", tmpdir, base); unlink(p);
rmdir(tmpdir);
}
static int
build_via_driver(const char *driver, const char *tmpdir, const char *cwd,
const char *src)
{
char cmd[2048];
snprintf(cmd, sizeof cmd,
"cd %s && timeout 180 %s build -I %s/lib %s 2>/dev/null",
tmpdir, driver, cwd, src);
return runwait(cmd);
}
static int
run_row(const char *driver, const char *cwd, const struct row *r, int seq)
{
char tmpdir[256], src[512], base[64], outbin[768];
snprintf(tmpdir, sizeof tmpdir, "/tmp/fhc_%d_d_%d", getpid(), seq);
snprintf(base, sizeof base, "main781");
snprintf(src, sizeof src, "%s/%s.ww", tmpdir, base);
mkdir(tmpdir, 0755);
if (write_source(src, r->src) != 0) { cleanup_tmp(tmpdir, base); return -1; }
int rc;
int br = build_via_driver(driver, tmpdir, cwd, src);
if (br == 0) {
snprintf(outbin, sizeof outbin, "%s/%s", tmpdir, base);
rc = runwait(outbin);
} else {
rc = -1;
}
cleanup_tmp(tmpdir, base);
return rc;
}
int
main(void)
{
const char *bin = getenv("BIN");
if (!bin) bin = "out/bin";
char cwd[256];
if (getcwd(cwd, sizeof cwd) == NULL) return 1;
char absbin[512];
if (bin[0] != '/') {
snprintf(absbin, sizeof absbin, "%s/%s", cwd, bin);
bin = absbin;
}
char cdrv[640], wdrv[640];
snprintf(cdrv, sizeof cdrv, "%s/ww", bin);
snprintf(wdrv, sizeof wdrv, "%s/ww_ww", bin);
int n = (int)(sizeof rows / sizeof rows[0]);
int total = 0, fail = 0;
int wwpresent = (access(wdrv, X_OK) == 0);
int seq = 0;
for (int i = 0; i < n; i++) {
if (rows[i].stage_mask & STAGE_CS) {
total++;
int got = run_row(cdrv, cwd, &rows[i], seq++);
if (got != rows[i].want_exit) {
fprintf(stderr,
"fmt_compositions_run[cs][%s]: exit=%d want=%d\n",
rows[i].label, got, rows[i].want_exit);
fail++;
}
}
if (wwpresent && (rows[i].stage_mask & STAGE_WW)) {
total++;
int got = run_row(wdrv, cwd, &rows[i], seq++);
if (got != rows[i].want_exit) {
fprintf(stderr,
"fmt_compositions_run[ww][%s]: exit=%d want=%d\n",
rows[i].label, got, rows[i].want_exit);
fail++;
}
}
}
if (!wwpresent)
fprintf(stderr, "fmt_compositions_run: skip wwstage (no %s)\n", wdrv);
if (fail) {
fprintf(stderr, "fmt_compositions_run: %d/%d fixtures failed\n",
fail, total);
return 1;
}
printf("fmt_compositions_run: %d/%d ok\n", total, total);
return 0;
}