The two monolithic XSD content/identity rules only satisfied the OpenAPIKit
validation idiom at the wrong granularity: no per-constraint removability,
no isolable failing/near-miss tests. Split them into 32 named rules, each
finding tagged at its origin and cached per XSDContext so the walk still
runs once per document (the #101 decision against duplicating XSD's
recursive type resolution still holds). Wired the streaming path's ID/IDREF
and identity checks through the same framework instead of calling the
validators imperatively, and added the unwrapAndLookup combinator the rule
already named as required.
Also includes the mandated repo-wide swiftformat/swiftlint pass.
* perf(model): rebuild DTD-default application iteratively, not recursively
applyingDefaults rebuilt the tree with a per-node recursive walk, so applying
DTD attribute defaults to a deeply-nested document overflowed the stack (around
2000 deep on a Swift Task stack). It now rebuilds bottom-up through a new shared
iterative spine, Node.rebuildingBottomUp, which transforms each node once its
children are rebuilt via an explicit work stack.
The same primitive will carry the other tree-to-tree transforms (canonical
prefix rewrite, XSLT namespace fixup) in follow-ups. Defaults are applied
identically: 1788 tests pass. Part of #350.
* perf(canonical): serialize C14N iteratively, not recursively
Canonicalizer.emit recursed on element children, so canonicalizing a
deeply-nested document overflowed the stack (crashed around 5000 deep).
The element serializer now drives a deferred-close work stack (the same
shape as the main serializer): each step carries the in-scope and
already-rendered namespace context, children push reversed to emit in
document order, and a close step emits the end tag. The shallow document
case and all namespace-rendering logic are unchanged.
The canonical bytes are byte-identical: the C14N 1.0, 1.1, and exclusive
conformance corpora pass, full suite 1789. A 50000-deep document now
canonicalizes without crashing. The node-subset helpers moved to their
own file to keep within the file-length limit. Part of #350.
