66bdc70bf1
Move examples/*.sx and their expected/ snapshots into per-category subfolders (examples/<category>/...). Folder = leading filename token, with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus runner and LSP sweep now discover each category's expected/ dir, while issues/ stays flat. Example 1058's repo-root-relative companion import is made file-relative. Path strings embedded in 164 snapshots were regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
// `try` rejections (ERR step E1.4a):
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// - `try` is only valid inside a failable function,
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// - the operand must be failable (the sole failable-operand check —
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// the parser imposes none),
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// - propagating a `try` whose callee's error set is not a subset of the
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// caller's named set is rejected (widening at a function-propagation site).
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// The positive case lives in `examples/221-try.sx`.
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#import "modules/std.sx";
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A :: error { Xa }
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B :: error { Yb }
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ga :: () -> !A { return; }
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gb :: () -> !B { return; }
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plain :: () -> i32 { return 0; }
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// `try` in a non-failable function.
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bad_ctx :: () -> i32 {
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try ga(); // error: `try` outside a failable function
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return 0;
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}
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// `try` on a non-failable operand.
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bad_operand :: () -> !A {
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try plain(); // error: operand has type i32 (not failable)
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return;
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}
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// Callee's set (B = {Yb}) is not a subset of the caller's set (A = {Xa}).
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widen :: () -> !A {
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try gb(); // error: Yb not in caller's error set A
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return;
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}
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main :: () -> i32 {
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a := bad_ctx(); // force bad_ctx to lower
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b := bad_operand(); // force bad_operand to lower
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c := widen(); // force widen to lower
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return 0;
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}
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