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.
35 lines
1.2 KiB
Plaintext
35 lines
1.2 KiB
Plaintext
// Comptime type construction — identity: a type-fn that builds a type with
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// `define(declare("Box"), ...)` must memoize by the instantiation's mangled name, so
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// `Box(i64)` resolved at two INDEPENDENT sites (here: a return type and a
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// parameter type) is ONE `TypeId`. A value built at one site is therefore
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// assignable / matchable at the other — nominal identity. If the minted result
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// were not registered under the mangled instantiation name, the two sites would
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// mint distinct types and `consume(build())` would be a type error.
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#import "modules/std.sx";
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#import "modules/std/meta.sx";
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Box :: ($T: Type) -> Type {
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return define(declare("Box"), .enum(.{ variants = .[
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EnumVariant.{ name = "some", payload = T },
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EnumVariant.{ name = "none", payload = void },
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] }));
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}
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build :: () -> Box(i64) { // site A resolves Box(i64)
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return Box(i64).some(7);
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}
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consume :: (b: Box(i64)) { // site B resolves Box(i64) independently
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if b == {
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case .some: (n) { print("some {}\n", n); }
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case .none: { print("none\n"); }
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}
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}
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main :: () -> i32 {
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consume(build()); // typechecks ONLY if site A == site B
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b : Box(i64) = .none;
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consume(b);
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return 0;
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}
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