959845bd30
The canonical sx block-body lambda is `(params) { stmts }` (and
`(params) -> Ret { stmts }`); the arrow form `=>` is for EXPRESSION bodies
(`(params) => expr`). The arrow-block hybrid `(params) => { .. }` was being
used in 33 files — convert all of them by dropping the `=>`. The two forms are
exactly equivalent (verified: identical IR and identical runtime values — the
block tail is the value with or without a `-> Ret`), so this is a pure source
cleanup: no `.ir` churn, and the only snapshot change is 0923's diagnostic
COLUMN (a negative narrowing test whose error span shifted by the removed `=> `).
Arrow EXPRESSION bodies (`=> expr`, `=> .{..}`, `=> [..]`) and `=>` inside
comments/strings were left untouched. Migrated across examples/concurrency,
examples/{closures,ffi-objc,generics,optionals,types}, issues/, and the stdlib
(io.sx, sched.sx). Suite 855/0.
18 lines
610 B
Plaintext
18 lines
610 B
Plaintext
// `xx <closure> : Block` builds an Apple-ABI block whose invoke
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// trampoline delegates to the sx closure. Verifies end-to-end:
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// stdlib Block layout, _NSConcreteStackBlock extern, per-signature
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// invoke trampoline, Into(Block) for Closure() -> void. Runs on
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// macOS — invokes the block's invoke fn directly via a typed fn
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// pointer instead of going through the Obj-C runtime.
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#import "modules/std.sx";
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#import "modules/ffi/objc_block.sx";
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main :: () -> i32 {
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cl := () { print("noop block ran\n"); };
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b : Block = xx cl;
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invoke_fn : (*Block) -> void abi(.c) = xx b.invoke;
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invoke_fn(@b);
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0
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}
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