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.
Each grammar element opens a define scope (scope-mangled names in the
flat table) with parentRef reaching the enclosing scope; includes are
transitive and include-level defines replace the included grammar's
same-name defines (4.7 override); div wrappers flatten while keeping
ns/datatypeLibrary inheritance (4.11); value text stays untrimmed so
whitespace-preserving datatypes compare exactly (6.2.9); dataExcept
recurses through choices. Spec suite: valid 286/289, invalid 287/291;
the six remaining instance cases are all the QName datatype.
The compiler implements simplification 4.9-4.10 (ns inheritance across
ancestors and document boundaries; QName resolution against in-scope
xmlns declarations; the attribute name= shorthand stays namespace-less),
include brings in the included grammar's start with overrides (4.7),
multiple starts and defines combine with a single omitted combine
merging by the named method (4.17), data/except lands as a dataExcept
pattern in the derivative engine (4.12), an empty element matches data
whose lexical space admits the empty string, and whitespace-only
attribute values match empty-matching patterns. Spec suite: valid
274/289, invalid 279/291.
