Files
sx/examples/1402-ffi-jni-call-03-methodid-sharing.sx
agra d8076b9333 lang: rename signed integer types sN -> iN
Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.

Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).

Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.

zig build test: 426/426; examples suite: 595/595.
2026-06-12 09:31:53 +03:00

33 lines
1.1 KiB
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// Phase 1 step 1.16 (PLAN-FFI.md): two `#jni_call` sites against the
// same (class, method, sig) tuple. Today each site emits its own
// `GetObjectClass` + `GetMethodID` call (no caching yet); after 1.17
// the lowering collapses to one cached `jmethodID` per unique
// (class, method, sig).
//
// Runtime: unreachable. The JNI dispatch is all indirect through
// `*env` — no external symbol declarations — so the IR loads cleanly
// into the host JIT, and the dereferences never execute because the
// guarding `g_should_call` global stays false. A plain `if false`
// would get constant-folded, taking the `unused_jni` body out of the
// IR with it; the runtime-readable global keeps the call alive so
// the JNI lowering is visible to the IR snapshot.
#import "modules/std.sx";
g_should_call : bool = false;
unused_jni :: (env: *void, target: *void) {
#jni_env(env) {
#jni_call(void)(target, "noop", "()V");
#jni_call(void)(target, "noop", "()V");
}
}
main :: () -> i32 {
if g_should_call {
unused_jni(null, null);
}
print("ok\n");
0
}