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objc: remove ns_string/c_string helpers

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ns_string's only caller was impl Into(*NSString) for string, so +stringWithUTF8String: is inlined there. c_string's one use (NSBundle.resourcePath in uikit) becomes rsrc.UTF8String() with resourcePath retyped *NSString. ffi-objc-call-06 and ffi-objc-dsl-07 .ir snapshots regenerated — they only drop the now-absent extern declares.
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agra
2026-05-30 18:01:27 +03:00
parent a29ede0383
commit fb8a5399f1
4 changed files with 16 additions and 42 deletions
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40
library/modules/std/objc.sx
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@@ -5,7 +5,7 @@
// argument and return shape. The idiom:
//
// msg_fn : (recv: *void, sel: *void, arg: [*]u8) -> *void = xx objc_msgSend;
// result := msg_fn(receiver, selector, c_string);
// result := msg_fn(receiver, selector, c_str);
// ─── Obj-C primitive type aliases ───────────────────────────────────────
// Named stand-ins for the three opaque Obj-C runtime types. They all
@@ -74,26 +74,6 @@ objc_registerClassPair :: (cls: *void) ->
// NSLog takes an NSString format; the variadic tail is not exposed here.
NSLog :: (fmt: *NSString) #foreign;
// ─── Convenience helpers ────────────────────────────────────────────────
// These hide the typed-fn-pointer cast for the most common shapes. They
// re-register selectors per call — if you're in a tight loop, cache the SEL.
// Wrap a C string in an autoreleased NSString.
ns_string :: (s: [*]u8) -> *void {
cls := objc_getClass("NSString".ptr);
sel := sel_registerName("stringWithUTF8String:".ptr);
fn_ptr : (*void, *void, [*]u8) -> *void callconv(.c) = xx objc_msgSend;
return fn_ptr(cls, sel, s);
}
// View an NSString's bytes as a C string. The returned pointer's lifetime is
// tied to the NSString; don't free it.
c_string :: (ns: *void) -> [*]u8 {
sel := sel_registerName("UTF8String".ptr);
fn_ptr : (*void, *void) -> [*]u8 callconv(.c) = xx objc_msgSend;
return fn_ptr(ns, sel);
}
// ─── NSObject (Phase 4 / M4.A) ───────────────────────────────────────────
// Root of every Obj-C class hierarchy. Apple's runtime supplies the IMPs;
// sx declares the method surface so user code can write
@@ -124,20 +104,24 @@ NSObject :: #foreign #objc_class("NSObject") {
}
// ─── NSString ────────────────────────────────────────────────────────────
// Foundation's immutable string. `ns_string` builds an autoreleased instance
// from a C string; the `Into` impl lets a string literal flow into any
// `*NSString` slot via `xx`, e.g. `dict.objectForKey(xx "SomeKey")`.
// Foundation's immutable string. `UTF8String` views the bytes as a C string
// whose lifetime is tied to the NSString (don't free it). The `Into` impl
// lets a string literal flow into any `*NSString` slot via `xx`, e.g.
// `dict.objectForKey(xx "SomeKey")`.
NSString :: #foreign #objc_class("NSString") {
#extends NSObject;
UTF8String :: (self: *Self) -> [*]u8;
}
// `self.ptr` must be NUL-terminated. String literals are; an arbitrary
// substring/built `string` may not be, so only pass literals (or otherwise
// NUL-terminated slices) through this conversion.
// Wraps the bytes in an autoreleased NSString via `+stringWithUTF8String:`.
// `self.ptr` must be NUL-terminated — string literals are; an arbitrary
// sliced/built `string` may not be.
impl Into(*NSString) for string {
convert :: (self: string) -> *NSString {
return xx ns_string(self.ptr);
cls := objc_getClass("NSString".ptr);
sel := sel_registerName("stringWithUTF8String:".ptr);
msg : (*void, *void, [*]u8) -> *void callconv(.c) = xx objc_msgSend;
return xx msg(cls, sel, self.ptr);
}
}