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.
21 lines
370 B
Plaintext
21 lines
370 B
Plaintext
// A closure stored in a struct field receives sub-32-bit enum args
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// with the right tag, same as direct or protocol-dispatched calls.
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#import "modules/std.sx";
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Fmt :: enum { a; b; }
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Ctx :: struct {
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on: Closure(Fmt) -> void;
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}
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main :: () -> i32 {
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c : Ctx = .{ on = (f: Fmt) {
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n : i64 = xx f;
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print("cl f = {}\n", n);
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}};
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c.on(.b);
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c.on(.a);
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0
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}
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