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Gather a chosen subject lane through a Lane output and convert pack_strips

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This commit is contained in:
Dennis Kobert
2026-08-24 08:22:25 +00:00
parent aba941e81d
commit d38c767312
7 changed files with 342 additions and 121 deletions
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11
node-graph/node-macro/src/validation.rs
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@@ -110,10 +110,15 @@ fn validate_record_io(parsed: &ParsedNodeFn) {
);
return;
};
if lazy_carrier && !crate::codegen::ir::build(parsed).derives {
let node = crate::codegen::ir::build(parsed);
if lazy_carrier && !node.derives {
emit_error!(parsed.input.pat_ident.span(), "a lazy record carrier evaluates at derived contexts; spell `impl Ctx + DeriveCtx`");
return;
}
if node.output.gathers && crate::codegen::ir::gathered_subject(&node).is_none() {
emit_error!(parsed.output_type.span(), "a `Lane` output gathers a materialized subject; give the primary input an `IList` type");
return;
}
let no_carrier = matches!(carrier_ty, Type::Tuple(tuple) if tuple.elems.is_empty());
let token = match (no_carrier, &carrier.ty) {
@@ -131,12 +136,12 @@ fn validate_record_io(parsed: &ParsedNodeFn) {
None => {
if let Some(ident) = crate::codegen::unbounded_generic(parsed, element) {
emit_error!(parsed.output_type.span(), "the returned generic element `{}` has no matching input", ident);
} else if !no_carrier && crate::codegen::contains_open_generic(parsed, carrier_ty) {
} else if !no_carrier && !node.output.gathers && crate::codegen::contains_open_generic(parsed, carrier_ty) {
emit_error!(
carrier.pat_ident.span(),
"record element reads are monomorphic for now; use a concrete element type or an unbounded passthrough generic"
);
} else if crate::codegen::contains_open_generic(parsed, element) {
} else if !node.output.gathers && crate::codegen::contains_open_generic(parsed, element) {
emit_error!(parsed.output_type.span(), "a written element must be a concrete type");
}
}