a68f7c2e64
18 obj-c examples migrated (1308/1311-1317/1319/1320/1321/1341-1347): import
runtime classes '#foreign #objc_class("X") {' → '#objc_class("X") extern {'
(prefix→postfix) + fn/comment '#foreign'→'extern'. No 13xx snapshot asserts on
'foreign' text → all behavior-preserving; empty snapshot diff, corpus-validated.
Per the keep-list policy: KEPT identity-#foreign tests 1306/1318 (filename
ffi-*-foreign*); LEFT comment-only #foreign in the extern/export test files
1332/1348/1349 (no decls). Bare defined #objc_class examples (no #foreign) untouched
— not a purge target. Suite green (647 corpus / 444 unit, 0 failed).
48 lines
1.6 KiB
Plaintext
48 lines
1.6 KiB
Plaintext
// M1.1 — Obj-C primitive type aliases.
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//
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// `id`, `Class`, `SEL`, `BOOL` from `modules/ffi/objc.sx` stand in
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// for the three opaque Obj-C runtime types and Apple's signed-char
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// boolean. They resolve to `*void` / `i8` at the LLVM layer — no
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// runtime cost — but make foreign-class and call-site declarations
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// read closer to Objective-C source.
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//
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// `Class(T)` parameterization (phantom T, `#extends`-aware
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// covariance) is deferred to a follow-up; for now plain `Class`
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// is the only form and assignments are not checked against the
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// referent's class hierarchy.
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#import "modules/std.sx";
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#import "modules/build.sx";
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#import "modules/ffi/objc.sx";
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// Foreign-class declaration using the aliases at param/return positions.
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NSObjectAlias :: #objc_class("NSObject") extern {
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alloc :: () -> *Self;
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init :: (self: *Self) -> *Self;
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isKindOfClass :: (self: *Self, cls: Class) -> BOOL;
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}
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main :: () -> i32 {
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inline if OS == .macos {
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// id - any Obj-C instance pointer.
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nsobj : id = NSObjectAlias.alloc().init();
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// Class - the runtime class object.
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ns_cls : Class = objc_getClass("NSObject".ptr);
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// SEL - registered selector.
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sel : SEL = sel_registerName("alloc".ptr);
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_ = sel;
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// BOOL - Apple's signed-char boolean. Cast the *Self into
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// a *NSObjectAlias for the method call.
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obj : *NSObjectAlias = xx nsobj;
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flag : BOOL = obj.isKindOfClass(ns_cls);
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print("isKindOfClass: {}\n", flag); // 1 (true)
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}
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inline if OS != .macos {
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print("isKindOfClass: 1\n"); // skip — runtime not present
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}
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0
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}
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