Files
sx/examples/1419-ffi-jni-class-09-multi-float-args.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

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// Regression: `obj.method()` foreign-class dispatch with a `float`
// return type used to silently emit `LLVMGetUndef` because the
// `Call<T>Method` switch in `emit_llvm.zig` didn't cover `.f32`.
// Combined with multiple such calls inlined as args to a single
// outer call (`f(o.a(), o.b(), o.c())`), every arg after the first
// went out as `undef` — exactly the chess Android touch failure
// (`MotionEvent.getX()` + `getY()` came through as `undef`s into
// `sx_android_push_touch`).
//
// This test exercises BOTH the `.f32` jdispatch slot AND the
// "multiple foreign-class method calls as args to one outer call"
// pattern. The bodies are gated behind a runtime-false flag so the
// JNI lookups never execute (no JVM in the test runtime), but the
// codegen path still has to emit the calls correctly.
#import "modules/std.sx";
MotionEvent :: #foreign #jni_class("android/view/MotionEvent") {
getAction :: (self: *Self) -> i32;
getX :: (self: *Self) -> f32;
getY :: (self: *Self) -> f32;
}
sx_consume_touch :: (action: i32, x: f32, y: f32) {
// Black-hole call so the args aren't dead-stripped before LLVM
// verification gets a chance to look at the call site.
if action == 0 and x == 0.0 and y == 0.0 {
print("zero\n");
}
}
g_should_call : bool = false;
drive_touch :: (env: *void, ev: *MotionEvent) {
#jni_env(env) {
// The bug: getX() / getY() lowered to `undef` floats and the
// call to sx_consume_touch passed garbage. Post-fix, all three
// JNI calls emit proper Call<T>Method dispatches.
sx_consume_touch(ev.getAction(), ev.getX(), ev.getY());
}
}
main :: () -> i32 {
if g_should_call {
drive_touch(null, null);
}
print("ok\n");
0
}