a593d150ca
The previous FFI checkpoint claimed Phase 3 step 3.0 ("`inst.method(args)`
on #objc_class receivers") had landed. It hadn't — `lowerForeignMethodCall`
in lower.zig:4353 still bails for any non-JNI runtime with the generic
"method calls on '{runtime}' runtime not yet supported (Phase 3/4)"
diagnostic, no commit introduced an Obj-C DSL dispatch path, and the
planned regression files weren't on disk.
This commit is the xfail half of the proper cadence (test-add then
make-green in separate commits):
- examples/ffi-objc-dsl-01-niladic.sx — `length()` → selector "length".
- examples/ffi-objc-dsl-02-one-arg.sx — `addObject(o)` → "addObject:".
- examples/ffi-objc-dsl-03-multi-keyword.sx — `combine_and(a, b)` →
"combine:and:" (sx name split on `_`, each piece becomes a keyword
with a trailing `:`).
- examples/ffi-objc-dsl-04-mismatch.sx — `something_extra(x)` —
keyword count (2) ≠ arity (1); must diagnose at the call site.
Each test follows the same pattern as `ffi-objc-call-08-multi-keyword.sx`:
synthesize a class at runtime via `objc_allocateClassPair` /
`class_addMethod`, declare the sx-side `#objc_class` against the same
name, then invoke the DSL form. Skips with a "(not macos)" line on
non-macOS hosts. Snapshots currently lock in the bail diagnostic with
exit=1; the next commit implements the dispatch and the snapshots
flip to the working output (and exit=0).
Checkpoint corrected to flag the prior false claim and reposition 3.0
back at the top of the open list.
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
// Phase 3 step 3.0: one-arg selector mangling. `addObject(o)` derives
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// `addObject:` — the sx method name becomes the keyword, a single
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// trailing `:` for the single arg. Selector arity (count of `:`) must
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// equal sx-side arity excluding self.
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//
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// Pre-3.0: bails at lower.zig with the Phase 3/4 diagnostic.
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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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SxProbeOneArg :: #foreign #objc_class("SxProbeOneArg") {
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addObject :: (self: *Self, val: s32) -> s32;
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}
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addObject_imp :: (self: *void, _cmd: *void, val: s32) -> s32 callconv(.c) {
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val * 2;
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}
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main :: () -> s32 {
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inline if OS == .macos {
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ns_object := objc_getClass("NSObject".ptr);
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cls := objc_allocateClassPair(ns_object, "SxProbeOneArg".ptr, 0);
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sel := sel_registerName("addObject:".ptr);
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class_addMethod(cls, sel, xx addObject_imp, "i@:i".ptr);
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objc_registerClassPair(cls);
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inst : *SxProbeOneArg = xx class_createInstance(cls, 0);
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n := inst.addObject(21);
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print("addObject(21) = {}\n", n);
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}
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inline if OS != .macos {
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print("skipped (not macos)\n");
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}
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0;
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}
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