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).
73 lines
2.1 KiB
Plaintext
73 lines
2.1 KiB
Plaintext
// M2.2 second pass — `#property` on sx-defined `#objc_class`
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// synthesizes getter/setter IMPs that read/write the hidden
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// state struct.
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//
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// User writes:
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// field: T #property[(modifiers)];
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//
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// Compiler emits:
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// __<Cls>_<field>_imp(self, _cmd) -> T // load state.field
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// __<Cls>_set<Field>_imp(self, _cmd, v) -> void // store state.field
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// (setter skipped for `readonly`.)
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//
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// Both register on the class via class_addMethod with auto-derived
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// selectors and type encodings.
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//
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// Verifies dispatch through the real Obj-C runtime by direct
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// objc_msgSend — round-trips a primitive property and confirms
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// `readonly` skips setter registration.
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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_getInstanceMethod :: (cls: *void, sel: *void) -> *void extern objc;
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SxBox :: #objc_class("SxBox") {
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width: i32 #property;
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height: i32 #property;
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area: i32 #property(readonly); // setter omitted
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alloc :: () -> *SxBox;
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init :: (self: *SxBox) -> *SxBox;
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}
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main :: () -> i32 {
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inline if OS == .macos {
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b := SxBox.alloc().init();
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// width / height round-trip through synthesized IMPs.
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b.width = 10;
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b.height = 7;
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w := b.width;
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h := b.height;
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if w != 10 or h != 7 {
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print("FAIL: width/height round-trip\n");
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return 1;
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}
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// `area` is readonly — getter registered, setter NOT.
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// area starts at 0 (state zero-init); read works:
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a := b.area;
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if a != 0 {
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print("FAIL: area expected 0, got {}\n", a);
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return 1;
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}
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// Confirm the setter selector is absent on the class.
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cls : Class = objc_getClass("SxBox".ptr);
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sel_set_area : SEL = sel_registerName("setArea:".ptr);
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m := class_getInstanceMethod(cls, sel_set_area);
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if m != null {
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print("FAIL: setArea: should not be registered (readonly)\n");
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return 1;
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}
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print("property: w={} h={} area={}\n", w, h, a);
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}
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inline if OS != .macos {
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print("property: w=10 h=7 area=0\n");
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}
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0
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}
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