d8076b9333
Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.
Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).
Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.
zig build test: 426/426; examples suite: 595/595.
35 lines
1.7 KiB
Plaintext
35 lines
1.7 KiB
Plaintext
// Failable closure composition (ERR E5.1): a closure LITERAL passed as a
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// function-type argument and called inside the callee. Covers a bare failable
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// fn-type param (`cb: (T) -> (U, !)`), the idiomatic `Closure(...)` param
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// (try-propagated), and ∅-widening of a NON-failable closure literal into a
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// failable slot (the generated adapter wraps the value into `{value, 0}`).
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//
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// NOTE: the adapter is generated when the closure LITERAL flows directly into
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// the bare-fn slot. Passing a pre-bound closure *variable* into a bare-fn slot
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// is a separate coercion-site path, not yet handled — see CHECKPOINT-ERR.
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#import "modules/std.sx";
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E :: error { Neg }
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bare :: (cb: (i64) -> (i64, !E), n: i64) -> i64 { return cb(n) catch (e) -1; }
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chain :: (cb: Closure(i64) -> (i64, !E), n: i64) -> (i64, !E) { return try cb(n); }
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dbl :: (x: i64) -> (i64, !E) { if x < 0 { raise error.Neg; } return x * 2; }
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main :: () -> i32 {
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// failable closure literal through a bare fn-type param (matching ABI)
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print("bare ok={} err={}\n",
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bare(closure((x: i64) -> (i64, !E) { if x < 0 { raise error.Neg; } return x * 2; }), 5),
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bare(closure((x: i64) -> (i64, !E) => x * 2), -1)); // ok=10; err: arrow never raises → cb(-1) = -2
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// Closure(...) param, try-propagated, then caught at the call site
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print("chain ok={} err={}\n",
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chain(closure((x: i64) -> (i64, !E) => x + 6), 4) catch (e) 0, // 10
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chain(closure((x: i64) -> (i64, !E) { raise error.Neg; }), 1) catch (e) 0); // 0
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// NON-failable closure literal widened into the failable bare slot
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print("widen={}\n", bare(closure((x: i64) -> i64 => x + 1), 9)); // 10
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return 0;
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}
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