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).
52 lines
1.7 KiB
Plaintext
52 lines
1.7 KiB
Plaintext
// M1.2 A.4b.iii — instance-method dispatch through the Obj-C
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// runtime. Each instance method now gets a C-ABI IMP trampoline
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// registered via 'class_addMethod' at class-pair init time. The
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// runtime can dispatch 'objc_msgSend(obj, sel)' to the
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// trampoline, which reads the '__sx_state' ivar to find the
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// state struct and forwards to the sx body.
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//
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// End-to-end (verifies registration only — sx-side
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// 'obj.bump()' calls still bail at the M1.2 A.7 dispatch gate
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// until +alloc/-dealloc (A.5/A.6) land too):
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// 1. class_getMethodImplementation(SxFoo, sel_registerName("bump"))
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// returns a non-null IMP — proves the trampoline is wired.
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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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class_getMethodImplementation :: (cls: *void, sel: *void) -> *void extern objc;
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SxFoo :: #objc_class("SxFoo") {
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counter: i32;
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bump :: (self: *Self) {
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self.counter += 1;
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}
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add :: (self: *Self, n: i32) {
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self.counter += n;
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}
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}
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main :: () -> i32 {
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inline if OS == .macos {
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cls : Class = objc_getClass("SxFoo".ptr);
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if cls == null { print("FAIL: SxFoo not registered\n"); return 1; }
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sel_bump : SEL = sel_registerName("bump".ptr);
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imp_bump : *void = class_getMethodImplementation(cls, sel_bump);
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if imp_bump == null { print("FAIL: bump IMP missing\n"); return 1; }
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sel_add : SEL = sel_registerName("add:".ptr);
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imp_add : *void = class_getMethodImplementation(cls, sel_add);
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if imp_add == null { print("FAIL: add: IMP missing\n"); return 1; }
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print("IMP: bump ok, add: ok\n");
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}
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inline if OS != .macos {
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print("IMP: bump ok, add: ok\n");
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}
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0
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}
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