8875a28641
attempt-3 pinned current_source_file to the metaprogram's defining module across the whole body lowering (lowerComptimeCall / monomorphizePackFn). That pin also covered caller-provided comptime $-arg nodes spliced into the body by substituteComptimeNodes — but those are CALLER-authored and must resolve in the caller's visibility context, not the callee's. Result: a caller-owned helper passed to an imported metaprogram errored "'<name>' is not visible". Fix: stamp each comptime $-arg node with the caller's source_file at the cpn build site (stampCallerSource, in lowerComptimeCall + monomorphizePackFn); lowerExpr switches current_source_file to a node's source_file when present, so the substituted subtree resolves against the caller while the surrounding callee code keeps the defining-module pin. No exemption / fall-open. Regression: examples/0738-modules-comptime-arg-caller-context.sx — a caller-owned helper passed as a comptime-ONLY $-arg through a namespaced import. Fail-before (attempt-3 binary): "'caller_name' is not visible". Pass-after: prints "hello world", exit 0. Comptime-only, so it does not exercise issue 0107. 0106 RESOLVED banner extended (point 3: body=defining context, substituted $-args=caller context). run_examples 473 -> 474; zig build test 412/412.
25 lines
1.2 KiB
Plaintext
25 lines
1.2 KiB
Plaintext
// A caller-owned helper passed as a comptime-ONLY `$`-arg to a NAMESPACED
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// imported metaprogram resolves in the CALLER's visibility context — not the
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// metaprogram's defining module (regression, issue 0106 follow-up).
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//
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// `emit` is reachable only as `m.emit`; the comptime arg `caller_name()` is
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// authored HERE in the caller. When `emit` splices that arg into its `#insert`
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// body and lowers it, the bare name `caller_name` must stay visible in the
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// caller's context. Before the fix, the body's defining-module pin also covered
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// the substituted caller arg, so `caller_name` was wrongly checked against
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// `emit.sx` and rejected as "not visible". The metaprogram's OWN code still
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// resolves in `emit.sx` (where `concat`/`print` are flat-imported), so this
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// stays compatible with the 0106 defining-context pin.
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//
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// Comptime-ONLY: `caller_name()` is evaluated at compile time and its value is
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// embedded as a literal in the generated `print(...)` statement — it is never
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// materialized at runtime (so this does NOT exercise issue 0107).
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m :: #import "0738-modules-comptime-arg-caller-context/emit.sx";
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caller_name :: () -> string { return "world"; }
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main :: () -> s32 {
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m.emit(caller_name());
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return 0;
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}
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