Hojun-Cho
2c33228b7e
Plan 9-style w-prefix on the per-arch tools, disambiguating from the
real Plan 9 6c/6a/6l in ref/plan9front/:
cmd/wwc/ → cmd/wcc/ libwwc.a → libwcc.a
cmd/6{c,a,l} → cmd/w6{c,a,l} binary names too
test/wwc/ → test/wcc/ 6 test files w/ w6 prefix
selfhost/cmd mirror in lockstep
bootstrap/amd64/{w6c,w6a,w6l} snapshot binaries (gitignored)
WW_6{C,A,L} → WW_W6{C,A,L} env-var overrides
Plan 9 source-tree refs ("Plan 9 6c shape", ref/plan9front/, etc.)
preserved. Hare-style driver, both C and ww sides:
ww test [path] discover *_test.ww in a directory module, run
each; single-file mode for `ww test foo.ww`
Module-by-name `ww build foo` resolves to foo.ww or foo/foo.ww
via search path (cwd : -I dirs : $WW_LIB)
Default-to-cwd `ww build` / `ww test` build the cwd module
Run pass-through `ww run path arg1 arg2` reaches the program
lib/os: getcwd (79) and getdents64 (217) syscalls power `.` resolution
and directory enumeration on the ww side.
Makefile: wwstage tool deps now include lib/os/os.ww (+ lib/strconv
for wwdump_ww) so lib/* edits force their rebuild instead of leaving
stale binaries — surfaced when test 995 first failed against a stale
w6c_ww built before the lib/os additions.
Test 993 byte-identical parity gate (C-side ww vs ww-side ww_ww on a
build corpus) stays green; all 19 tests pass.
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
/*
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* wwdump — deterministic dump tool for ww source.
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*
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* Reads a .ww file and writes either a token stream or an AST
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* s-expression to stdout, byte-for-byte stable across runs. It is the
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* diff anchor for self-host: the C-side libwcc and the future ww-side
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* frontend must produce the same dump for the same input.
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*
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* wwdump -t file.ww tokens, one per line: "<file>:<l>:<c> <kind> [val]"
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* wwdump -a file.ww AST as s-expr, one node per line
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*
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* No newlines or trailing whitespace varies by phase of the moon. If
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* the bytes differ, somebody changed the front end.
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*/
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#include "ww.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static int
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slurp(const char *path, char **outbuf, u64 *outlen)
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{
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FILE *f = fopen(path, "rb");
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if (f == NULL) return -1;
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fseek(f, 0, SEEK_END);
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long n = ftell(f);
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fseek(f, 0, SEEK_SET);
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if (n < 0) { fclose(f); return -1; }
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char *b = malloc((size_t)n + 1);
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if (b == NULL) { fclose(f); return -1; }
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if (fread(b, 1, (size_t)n, f) != (size_t)n) { free(b); fclose(f); return -1; }
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b[n] = '\0';
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fclose(f);
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*outbuf = b;
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*outlen = (u64)n;
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return 0;
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}
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static int
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dump_tokens(const char *src, char *buf, u64 len, FILE *out)
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{
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Arena *a = newarena();
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Lex l;
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lexinit(&l, a, src, buf, len);
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for (;;) {
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Tok t = lexnext(&l);
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tokprint(out, t);
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if (t.kind == TK_EOF || t.kind == TK_ERR) break;
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}
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int errs = l.errs;
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freearena(a);
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return errs ? 1 : 0;
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}
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static int
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dump_ast(const char *src, char *buf, u64 len, FILE *out)
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{
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Arena *a = newarena();
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Lex l;
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Parser p;
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lexinit(&l, a, src, buf, len);
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parserinit(&p, a, &l);
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Node *file = parsefile(&p);
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int errs = l.errs || p.errs;
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if (file) astprint(out, file);
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freearena(a);
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return errs ? 1 : 0;
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}
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int
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main(int argc, char **argv)
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{
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int mode = 't'; /* tokens by default */
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const char *src = NULL;
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const char *out = NULL;
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for (int i = 1; i < argc; i++) {
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const char *a = argv[i];
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if (strcmp(a, "-t") == 0) mode = 't';
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else if (strcmp(a, "-a") == 0) mode = 'a';
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else if (strcmp(a, "-o") == 0 && i + 1 < argc) out = argv[++i];
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else if (a[0] == '-') {
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fprintf(stderr, "wwdump: unknown flag %s\n", a);
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return 2;
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}
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else if (src == NULL) src = a;
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else {
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fputs("wwdump: only one input supported\n", stderr);
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return 2;
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}
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}
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if (src == NULL) {
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fputs("usage: wwdump [-t|-a] [-o out] file.ww\n", stderr);
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return 2;
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}
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char *buf;
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u64 len;
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if (slurp(src, &buf, &len) < 0) {
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fprintf(stderr, "wwdump: %s: cannot read\n", src);
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return 1;
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}
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FILE *of = stdout;
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if (out) {
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of = fopen(out, "wb");
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if (of == NULL) {
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fprintf(stderr, "wwdump: cannot open %s\n", out);
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return 1;
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}
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}
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int rc;
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if (mode == 'a') rc = dump_ast(src, buf, len, of);
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else rc = dump_tokens(src, buf, len, of);
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if (of != stdout) fclose(of);
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free(buf);
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return rc;
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}
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