cd5b958d19
Introduce the welded comptime `compiler` library (`#library "compiler"` +
`abi(.zig) extern compiler`), per design/comptime-compiler-api.md, and unify
`callconv(...)` into the new `abi(...)` annotation.
abi(...) replaces callconv(...):
- New ABI enum { default, c, zig, pure }; `abi(.c|.zig|.pure)` parses in the
postfix slot before extern/export (and standalone). `kw_callconv` -> `kw_abi`.
- Migrated 52 sx files, the call-convention-mismatch diagnostic, and docs
(readme/specs) from `callconv(.c)` to `abi(.c)`.
Phase 1 — welded compiler library (parse -> registry -> validation -> bridge):
- `abi(.zig) extern compiler` parses on fn decls (carries abi/extern_lib) and
struct decls (StructDecl.abi/extern_lib).
- `#library "compiler"` is the comptime-only internal surface — never dlopen'd.
- src/ir/compiler_lib.zig: the binding registry (the safety boundary). `Field`
welded to StructInfo.Field with layout baked from the real Zig type
(@offsetOf/@sizeOf); `findType`/`findFn`. Welded structs are layout-validated
at registration (field set + total size) as a header checked against the impl.
- Host-call bridge: a `fn abi(.zig) extern compiler` dispatches under the
comptime interp to its registered Zig handler (intern/text_of round-trip),
never dlsym. IR Function.compiler_welded; validated in declareFunction.
- Comptime-only enforcement: a runtime call to a welded fn is a clean
build-gating error (emitCall), not an undefined-symbol link failure.
Phase 2.1 — byte-layout weld foundation:
- Decision: full byte-layout weld (sx struct laid out byte-identically to the
bound Zig type). Registered StructInfo (first non-natural / Zig-reordered
layout). `computeWeldPlan` — pure offset-ordered element plan + padding +
sx-field->LLVM-element remap; unit-tested. Emit/interp wiring is the next
sub-step (2.2+, see current/CHECKPOINT-COMPILER-API.md).
Examples: 0625/0626 (welded struct + fn round-trip), 1183/1184/1185
(layout-mismatch, unexported-fn, runtime-call diagnostics).
46 lines
2.1 KiB
Plaintext
46 lines
2.1 KiB
Plaintext
// Minimal iOS app entry point — pure sx, no .m files.
|
|
//
|
|
// 1. Register a class `SxAppDelegate : UIResponder <UIApplicationDelegate>`
|
|
// dynamically, with one method:
|
|
// application:didFinishLaunchingWithOptions: returns YES (BOOL 1).
|
|
// 2. Call UIApplicationMain(0, null, null, @"SxAppDelegate") to hand off to
|
|
// UIKit's run loop. This blocks until the app exits.
|
|
//
|
|
// After install + launch, the simulator shows the default black screen
|
|
// (UIWindow not created — that's 5.8) and the AppDelegate callback fires
|
|
// once at startup. The process stays alive because UIApplicationMain
|
|
// drives the iOS run loop.
|
|
|
|
#import "modules/std.sx";
|
|
#import "modules/ffi/objc.sx";
|
|
|
|
#framework "UIKit";
|
|
|
|
UIApplicationMain :: (argc: i32, argv: *void, principal_class: *NSString, delegate_class: *NSString) -> i32 extern;
|
|
|
|
// IMP for application:didFinishLaunchingWithOptions:
|
|
// Obj-C: -(BOOL)application:(UIApplication *)app didFinishLaunchingWithOptions:(NSDictionary *)opts
|
|
// Type encoding: "c@:@@" -- BOOL (signed char), self, _cmd, id, id
|
|
did_finish_launching :: (self: *void, _cmd: *void, app: *void, opts: *void) -> u8 abi(.c) {
|
|
NSLog(xx "[sx] application:didFinishLaunchingWithOptions: called\n");
|
|
return 1; // YES
|
|
}
|
|
|
|
main :: () -> i32 {
|
|
// SxAppDelegate : UIResponder. We deliberately don't try
|
|
// `class_addProtocol(UIApplicationDelegate)` — the linker dead-strips the
|
|
// protocol metadata from UIKit when nothing references it at compile
|
|
// time, and the C runtime can't look it up by name. UIApplicationMain
|
|
// duck-types on the method name, so this works without formal conformance.
|
|
UIResponder := objc_getClass("UIResponder".ptr);
|
|
SxAppDelegate := objc_allocateClassPair(UIResponder, "SxAppDelegate".ptr, 0);
|
|
|
|
sel := sel_registerName("application:didFinishLaunchingWithOptions:".ptr);
|
|
class_addMethod(SxAppDelegate, sel, xx did_finish_launching, "c@:@@".ptr);
|
|
|
|
objc_registerClassPair(SxAppDelegate);
|
|
|
|
// Hand off to the iOS run loop. Never returns under normal operation.
|
|
return UIApplicationMain(0, xx 0, xx 0, xx "SxAppDelegate");
|
|
}
|