Files
sx/examples/1341-ffi-objc-dsl-01-niladic.sx
agra 12bf61a9fc std: restructure step 3 — ffi/ moves, build.sx, math dir spelling, fixtures
- objc.sx, objc_block.sx (from std/) + sdl3/opengl/raylib/stb/stb_truetype/
  wasm vendor bindings (from modules/ root) -> modules/ffi/
- std/uikit.sx deleted: platform/uikit.sx already declares UIApplicationMain
  and imports objc; '#framework "UIKit"' cannot live in a file imported on
  macOS targets (unconditional link directive, UIKit is iOS-only), so the
  three iOS-only examples carry the 3-line glue inline. 1607/1608/1616 also
  un-rotted (dead ns_string -> 'xx "..."' Into conversions, callconv(.c)
  msgSend fn-ptrs) — all three build for ios-sim/ios again.
- math/math.sx -> math/scalar.sx; one spelling '#import "modules/math"'
  everywhere (4 pinned IR snapshots regenerated: dir import adds Vec2/Mat4
  to the type tables).
- compiler.sx -> build.sx (imports, CLAUDE.md bundling table, specs.md).
- testpkg/ + test_c.sx -> tests/fixtures/ (resolve CWD-relative from repo
  root, same as vendors/).
- library-internal imports use full modules/... paths (std.sx tail,
  platform/bundle.sx, fixtures).
2026-06-11 08:37:22 +03:00

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// Phase 3 step 3.0 (PLAN-FFI.md): `inst.method(args)` on an
// `#objc_class`-typed receiver lowers to `objc_msg_send` with a derived
// selector. This test covers the niladic shape: the sx-side method name
// is used verbatim as the selector (`length` → `length`).
//
// Test pattern mirrors `ffi-objc-call-08-multi-keyword.sx`: synthesize a
// fresh class at runtime via `objc_allocateClassPair` + `class_addMethod`,
// declare the sx-side `#objc_class` against the same name, then invoke
// the DSL form. On macOS this exercises the real Obj-C runtime; on
// other platforms the test skips.
//
// Pre-3.0: the dispatch bails at lower.zig with "method calls on
// 'objc_class' runtime not yet supported (Phase 3/4)". Snapshot captures
// that diagnostic.
#import "modules/std.sx";
#import "modules/build.sx";
#import "modules/ffi/objc.sx";
SxProbeNiladic :: #foreign #objc_class("SxProbeNiladic") {
length :: (self: *Self) -> s32;
}
length_imp :: (self: *void, _cmd: *void) -> s32 callconv(.c) {
42
}
main :: () -> s32 {
inline if OS == .macos {
ns_object := objc_getClass("NSObject".ptr);
cls := objc_allocateClassPair(ns_object, "SxProbeNiladic".ptr, 0);
sel := sel_registerName("length".ptr);
class_addMethod(cls, sel, xx length_imp, "i@:".ptr);
objc_registerClassPair(cls);
inst : *SxProbeNiladic = xx class_createInstance(cls, 0);
n := inst.length();
print("length = {}\n", n);
}
inline if OS != .macos {
print("skipped (not macos)\n");
}
0
}