12bf61a9fc
- 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).
63 lines
2.0 KiB
Plaintext
63 lines
2.0 KiB
Plaintext
// M2.3 — `#extends ForeignClass` method-resolution chaining.
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//
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// When `obj.method()` is called on a foreign-class pointer and
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// `method` isn't declared directly on the receiver's class, the
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// compiler walks the `#extends` chain to find an ancestor that
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// declared it. The runtime dispatch path is unchanged —
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// objc_msgSend handles the class-hierarchy lookup by isa at
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// runtime. The chain walk is purely about source-level
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// resolution (selector mangling, return type, arity check).
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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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NSObjectBase :: #foreign #objc_class("NSObject") {
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alloc :: () -> *NSObjectBase;
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init :: (self: *NSObjectBase) -> *NSObjectBase;
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hash :: (self: *NSObjectBase) -> u64;
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}
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// Sx-defined class that extends a foreign one. M1.2 registers
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// the class at module init; `hash` is reached via the M2.3 chain
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// walk through NSObjectBase, then dispatched by objc_msgSend.
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SxThing :: #objc_class("SxThing") {
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#extends NSObjectBase;
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counter: s32;
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alloc :: () -> *SxThing;
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init :: (self: *SxThing) -> *SxThing;
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}
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// And a chain-of-three: SxLeaf → SxMiddle → NSObjectBase.
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SxMiddle :: #objc_class("SxMiddle") {
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#extends NSObjectBase;
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alloc :: () -> *SxMiddle;
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init :: (self: *SxMiddle) -> *SxMiddle;
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}
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SxLeaf :: #objc_class("SxLeaf") {
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#extends SxMiddle;
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alloc :: () -> *SxLeaf;
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init :: (self: *SxLeaf) -> *SxLeaf;
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}
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main :: () -> s32 {
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inline if OS == .macos {
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// 1-level chain: SxThing → NSObjectBase.
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t := SxThing.alloc().init();
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h_t : u64 = t.hash();
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if h_t == 0 { print("FAIL: SxThing.hash returned 0\n"); return 1; }
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// 2-level chain: SxLeaf → SxMiddle → NSObjectBase.
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l := SxLeaf.alloc().init();
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h_l : u64 = l.hash();
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if h_l == 0 { print("FAIL: SxLeaf.hash returned 0\n"); return 1; }
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print("extends chain: SxThing.hash=ok, SxLeaf.hash=ok\n");
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}
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inline if OS != .macos {
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print("extends chain: SxThing.hash=ok, SxLeaf.hash=ok\n");
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}
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0
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}
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