4e942b5373
Rename all example tests/companions to the XXXX-category-test-name scheme (per-category 100-blocks: basic 0010, types 0100, ... errors 1000, diagnostics 1100, ffi 1200, ffi-objc 1300, ffi-jni 1400, vectors 1500, platform 1600). Companions and dir/C fixtures move in lockstep with their parent test; #import/#source/#include paths rewritten to match. Expected output now lives in examples/expected/ (a sibling dir of the tests) split into three streams per the new convention: <name>.exit / <name>.stdout / <name>.stderr (+ optional <name>.ir) run_examples.sh rewritten: scans examples/ and issues/ for an expected/<name>.exit marker, captures stdout and stderr separately (no more 2>&1), compares each stream + exit + optional IR snapshot. Behavior validated unchanged: every renamed test reproduces its prior merged output + exit (diffs limited to file paths/basenames embedded in diagnostics + traces, which correctly reflect the new names). Suite: 292 passed, 0 failed. 50-smoke.sx split + issue relocation + docs follow in subsequent commits.
50 lines
2.2 KiB
Plaintext
50 lines
2.2 KiB
Plaintext
// Phase 0 baseline (PLAN-FFI.md step 0.5): the three shapes that
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// actually appear at the sx ↔ C boundary today:
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//
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// 1. Null-terminated `[:0]u8` — passed by `.ptr` to a `const char *`.
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// 2. Raw byte buffer `[*]u8` — pointer + explicit length.
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// 3. sx `string` value — coerceArg's "fat-pointer decay" branch
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// pulls `.ptr` automatically for `*u8`/
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// `[:0]u8` params (string is `{ptr, len}`).
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// 4. Pointer return from C — round-trips back as `[*]u8` / `*u8`.
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#import "modules/std.sx";
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#import c {
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#source "1213-ffi-05-string-args.c";
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};
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ffi_strlen :: (s: [:0]u8) -> s32 #foreign;
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ffi_first_byte :: (s: [:0]u8) -> s32 #foreign;
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ffi_sum_bytes :: (buf: [*]u8, len: s32) -> s32 #foreign;
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ffi_write_byte :: (buf: [*]u8, idx: s32, v: u8) -> void #foreign;
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ffi_static_greeting :: () -> [*]u8 #foreign;
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main :: () -> s32 {
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// ── [:0]u8 null-terminated literal ─────────────────────────────
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msg : [:0]u8 = "hello";
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print("strlen(\"hello\") = {}\n", ffi_strlen(msg));
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print("first_byte = {}\n", ffi_first_byte(msg));
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// ── sx `string` → C `const char *` (slice-decay through coerceArg) ─
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s : string = "sx string here";
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print("strlen(sx string) = {}\n", ffi_strlen(xx s.ptr));
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// ── [*]u8 raw buffer + length ──────────────────────────────────
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bytes : [4]u8 = .[10, 20, 30, 40];
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bp : [*]u8 = xx @bytes[0];
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print("sum_bytes([10,20,30,40]) = {}\n", ffi_sum_bytes(bp, 4));
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// ── Mutate buffer via C, read back from sx ─────────────────────
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ffi_write_byte(bp, 1, 99);
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print("bytes[1] after write = {}\n", bytes[1]);
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// ── C returns a static string pointer; read it byte-by-byte ────
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g := ffi_static_greeting();
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n := ffi_strlen(xx g);
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print("static greeting len = {}\n", n);
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print("static greeting [0] = {}\n", g[0]);
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0;
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}
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