51277afadf
Delete the bail at lower.zig:4407 that diagnosed sx-defined Obj-C
class dispatch as 'not yet supported'. Both foreign and
sx-defined '#objc_class' decls now flow through the same
'lowerObjcMethodCall' path — instance methods on sx-defined
classes dispatch via objc_msgSend, and the registered IMP
trampolines (M1.2 A.4b.iii) route to the sx bodies.
The runtime non-Obj-C branch (.swift_class / .swift_struct /
.swift_protocol) keeps its 'not yet supported' diagnostic;
M1.2 only addresses the Obj-C runtimes.
Constructor reorder in emit_llvm: emitObjcDefinedClassInit
runs BEFORE emitObjcClassInit. Otherwise the Phase 3.1
class-cache populator calls objc_getClass("SxFoo") before our
constructor registers the class — cache slot stored null and
'SxFoo.method()' dispatched against a null class pointer.
ffi-objc-defined-class-01-instance.sx (the integration test
from the plan) now runs the full lifecycle on macOS:
f := SxFoo.alloc() // synthesized +alloc IMP fires
f.bump() // dispatch → IMP trampoline → sx body
f.bump() // state persists across calls
f.bump()
f.get() // → 3
release_fn(f, sel_release) // synthesized -dealloc fires
The user declares 'alloc :: () -> *SxFoo;' bodyless to give the
synthesized +alloc IMP a typed contract at sx call sites —
same convention as foreign classes today.
M1.2 complete: A.0 A.1 A.2 A.3 A.4 A.4b.i A.4b.ii A.4b.iii
A.5 A.6 A.7. End-to-end class-synthesis foundation works.
177 example tests pass (+1 from the integration test). zig
build test green.
62 lines
2.0 KiB
Plaintext
62 lines
2.0 KiB
Plaintext
// M1.2 A.7 — full instance state round-trip on a sx-defined
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// `#objc_class`. The plan's first integration smoke test
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// (A.2/A.3/A.4 integration through the now-open dispatch gate).
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//
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// What this exercises end-to-end:
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// 1. `SxFoo.alloc()` — sx-side call lowers to objc_msgSend(SxFoo, sel_alloc).
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// The runtime invokes the synthesized +alloc IMP (M1.2 A.5)
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// which allocates an instance + state struct and binds them
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// via __sx_state.
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// 2. `f.bump()` — sx-side method call lowers to
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// objc_msgSend(f, sel_bump). Runtime dispatches to the IMP
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// trampoline (M1.2 A.4b.ii) which reads __sx_state to find
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// the state pointer and forwards to the sx body
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// `SxFoo.bump(__sx_default_context, state)`. Body mutates
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// self.counter (M1.2 A.3).
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// 3. Repeat to confirm the state persists across calls.
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// 4. release — synthesized -dealloc (M1.2 A.6) frees the state
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// and chains to [super dealloc].
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#import "modules/std.sx";
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#import "modules/compiler.sx";
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#import "modules/std/objc.sx";
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SxFoo :: #objc_class("SxFoo") {
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counter: s32;
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// Declare the synthesized class methods so sx-side call sites
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// can resolve them. +alloc / -dealloc IMPs are emitted by the
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// compiler at module-init (M1.2 A.5 / A.6); these declarations
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// just give the names a typed contract.
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alloc :: () -> *SxFoo;
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bump :: (self: *Self) {
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self.counter += 1;
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}
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get :: (self: *Self) -> s32 {
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return self.counter;
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}
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}
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main :: () -> s32 {
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inline if OS == .macos {
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f := SxFoo.alloc();
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if f == null { print("FAIL: alloc returned null\n"); return 1; }
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f.bump();
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f.bump();
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f.bump();
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print("counter: {}\n", f.get()); // expected: 3
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// release
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sel_release : SEL = sel_registerName("release".ptr);
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release_fn : (obj: *void, sel: *void) -> void callconv(.c) = xx objc_msgSend;
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release_fn(xx f, sel_release);
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}
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inline if OS != .macos {
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print("counter: 3\n");
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}
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0;
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}
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