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.
28 lines
1.0 KiB
Plaintext
28 lines
1.0 KiB
Plaintext
// `xx <pack>[i]` erased to a protocol-typed local.
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//
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// Erasing a single comptime-pack element to a protocol scalar routes through
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// buildProtocolErasure. A pack index is a comptime rvalue (a pack has no
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// runtime storage — `sources[i]` resolves to the call-site arg, which only
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// gets storage when lowered as a value), so the erasure must heap-copy the
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// materialized element rather than take its address.
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//
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// Regression (issue 0135): `xx sources[0]` used to lower the bare pack as a
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// value and error with "pack 'sources' has no runtime value".
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#import "modules/std.sx";
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VL :: protocol(T: Type) { get :: (self: *Self) -> T; }
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IntCell :: struct { v: i64; }
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impl VL(i64) for IntCell { get :: (self: *IntCell) -> i64 => self.v; }
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first :: (..sources: VL) -> i64 {
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x : VL(i64) = xx sources[0]; // erase element 0 to VL(i64)
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return x.get();
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}
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main :: () -> i32 {
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print("{}\n", first(IntCell.{ v = 7 })); // 7
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print("{}\n", first(IntCell.{ v = 42 }, IntCell.{ v = 99 })); // 42 (element 0)
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0
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}
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