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Source a record io node's rows from its implementations secondary

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Dennis Kobert
2026-09-09 13:08:40 +00:00
parent a46a23e516
commit 25cc63eb8d
1 changed files with 20 additions and 13 deletions
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33
node-graph/node-macro/src/codegen/entries.rs
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@@ -265,27 +265,34 @@ fn single_row_entries(parsed: &ParsedNodeFn, struct_name: &Ident, regular_fields
// (erased routing generics included) is row-invariant. The carried list
// mirrors the struct's carried generic parameters in declaration order.
let ctx_ident = context_param(parsed).map(|ctx| ctx.ident.clone());
let ranked_generic_idents: Vec<Ident> = parsed
let ranked = |index: usize| matches!(&regular_fields[index].ty, ParsedFieldType::Regular(RegularParsedField { list_levels, .. }) if *list_levels > 0);
// A record-io node's plain secondary reaches the constructor concrete, so its generic monomorphizes the row like a ranked element does.
let record_secondary =
|index: usize| matches!(ir::node_kind(&node), ir::NodeKind::RecordIo) && index > 0 && !node.inputs[index].subject && matches!(&regular_fields[index].ty, ParsedFieldType::Regular(_));
let names_generic = |index: usize, generic: &Ident| match &regular_fields[index].ty {
ParsedFieldType::Regular(RegularParsedField { ty, .. }) => crate::codegen::type_contains_ident(ty, generic),
_ => false,
};
let solves_generic = |index: usize, generic: &Ident| match &regular_fields[index].ty {
ParsedFieldType::Regular(RegularParsedField { ty, implementations, .. }) => !implementations.is_empty() && generic_extractable(ty, generic),
_ => false,
};
let carried_generic_idents: Vec<Ident> = parsed
.fn_generics
.iter()
.filter_map(|param| match param {
GenericParam::Type(type_param) if Some(&type_param.ident) != ctx_ident.as_ref() => Some(type_param.ident.clone()),
_ => None,
})
.filter(|ident| {
regular_fields.iter().any(|field| match &field.ty {
ParsedFieldType::Regular(RegularParsedField { ty, list_levels, .. }) => *list_levels > 0 && crate::codegen::type_contains_ident(ty, ident),
_ => false,
})
})
.filter(|ident| (0..regular_fields.len()).any(|index| (ranked(index) || record_secondary(index)) && names_generic(index, ident)))
.collect();
let ranked_source = |generic: &Ident| {
regular_fields.iter().position(|field| match &field.ty {
ParsedFieldType::Regular(RegularParsedField { ty, list_levels, implementations, .. }) => *list_levels > 0 && !implementations.is_empty() && generic_extractable(ty, generic),
_ => false,
})
// Ranked sources come first, so a generic a ranked input already carries keeps sourcing its rows from that input.
let carried_source = |generic: &Ident| {
(0..regular_fields.len())
.find(|&index| ranked(index) && solves_generic(index, generic))
.or_else(|| (0..regular_fields.len()).find(|&index| record_secondary(index) && solves_generic(index, generic)))
};
let carried: Option<Vec<(Ident, usize)>> = ranked_generic_idents.iter().map(|ident| ranked_source(ident).map(|index| (ident.clone(), index))).collect();
let carried: Option<Vec<(Ident, usize)>> = carried_generic_idents.iter().map(|ident| carried_source(ident).map(|index| (ident.clone(), index))).collect();
let Some(carried) = carried else {
return quote!();
};