A literal result element and its attributes in a stylesheet namespace
bound by stylesheet-prefix are rewritten on output to the namespace and
prefix bound by result-prefix (#default supported), so a stylesheet can
emit literal xsl: elements. Prefixes resolve through the in-scope xmlns
declarations; aliases fold across include/import. Splits AVT parsing into
XSLTAVT.swift and trims the transformer to stay within length budgets.
format-number now honors named and default decimal formats: the decimal
separator, grouping separator, percent, minus sign, zero-digit (for
non-Latin digit sets), NaN, and infinity symbols come from the chosen
xsl:decimal-format, in both the picture and the output. FormatNumber is
parameterized over the symbol set and the formats thread through the
function table; folded across include/import.
An unrecognized XSLT element instantiates its xsl:fallback children in its
place, or is dropped when it has none; a fallback under a supported
instruction is ignored. The fallback content is handled in the instantiate
loop alongside variables, so the evaluate dispatch stays within budget.
Re-applies templates to the current node in the current mode, considering
only templates of lower import precedence than the one being instantiated,
falling back to the built-in rule when none match. Threads the current
mode and import precedence through the evaluation context, and moves the
transformer runtime types into XSLTRuntime.swift (namespaced, via private
aliases) to stay within the file-length and namespacing gates.
Only the static deduplicated helper moves to XSLTElements.swift (it needs
no private types); attributeSetAttributes stays in the transformer so the
evaluation context and result-item types remain file-private, satisfying
the one-file-scope-type namespacing gate.
Named attribute sets apply to a literal result element or xsl:element via
use-attribute-sets; sets may include other sets recursively with a cycle
guard, set attributes are lowest precedence so the element's own
attributes override them, and same-named attributes collapse to the last.
Folded across xsl:include/xsl:import. Splits the element-building helpers
into XSLTElements.swift to stay within the file-length budget.
xsl:message instantiates its body as diagnostic text and produces no
result-tree output; terminate=yes records the text and aborts the
transform with an XSLTError.terminated, halting further instantiation.
Splits the transform entry points into XSLTTransform.swift and moves the
message case to keep within the complexity and file-length budgets.
Whitespace-only text nodes are removed from the source tree for elements
named by strip-space before transformation, with preserve-space and a
more specific name test winning over *, and xml:space=preserve on a
source element or ancestor overriding the stripping. The name sets fold
across xsl:include/xsl:import. Refactors the stylesheet compile loop
through a Parts accumulator to absorb the new top-level elements within
the complexity budget.
A RELAX NG attribute failure now reports an undeclared attribute
("attribute @b is not allowed on <n>") separately from a declared
attribute carrying a bad value ("attribute @count on <n>: 'abc' is not a
valid integer"), quoting the value and naming its datatype by reusing the
text detail. The declared value pattern is found by matching the
attribute name through the residual.
A RELAX NG text/datatype mismatch now reports the rich datatype reason
(quoting the value and naming the type, e.g. 'abc' is not a valid
integer) and a value mismatch quotes both the actual text and the
required literal, instead of a generic "text content is not valid". The
detail is peeled from the content pattern at the failure point through
choice, group, list, and ref.
An element whose children break its content model now names each stray
child outside the model's alphabet individually, and reports a pure
order/count violation once with the allowed elements as a hint, instead
of a single opaque "do not match its content model". Adds an alphabet
extractor to the content-model matcher. This brings DTD to the same
located standard as the XSD, RELAX NG, and Schematron validators, so all
four schema languages give editor-grade diagnostics.
A content-model violation is now placed at the offending child with a
recovery hint naming what was expected, instead of one opaque "content
does not match the content model" per element. The sequence/choice
automaton is walked child by child via its follow-set to flag the first
child the model rejects, or the incomplete content at the end; an xs:all
group recovers past each stray child and reports every missing required
member. Well-placed children are still validated for their own content,
so an editor sees every problem at once. Brings XSD to the same located,
recovering standard as the RELAX NG, DTD, and Schematron validators.
Adds RelaxNG.errors(in:) reporting every way a document fails the schema
as individual located errors with coding paths, recovering past each
failure so all of a faulty document's problems surface at once instead of
only the first. Errors carry recovery hints naming the element types
accepted at the failure point, and distinguish unexpected elements,
invalid or missing attributes, invalid text/datatype content, and missing
required content. RelaxNG.validation() exposes the schema as a
Validation<Node, Void>, composing with the same framework as the XSD,
DTD, and Schematron rules. The boolean derivative engine remains the
authority on validity; the diagnostic walk only places and explains the
failures, recovering each step so it never cascades. Splits the engine
and the diagnostics into separate files.
A prefer attribute on a <group> (or nested <catalog>) overrides the
catalog-wide preference for the <public> entries within it, inherited
through nested groups. The resolver records each public entry's effective
preference and consults it when falling back from an unmatched system
identifier, so two entries in one catalog can prefer differently. A system
match still always wins.
A <pattern abstract="true"> is a template whose rule queries carry $name
references; a <pattern is-a="…"> with <param> children instantiates it,
substituting each parameter into the template's context, test, <let>
value, and <value-of select=> before the XPath is compiled. The
substitution is a single left-to-right pass, so a substituted value is
never rescanned and a short name never captures a longer one; $name
references that are not parameters stay as written. The template itself
contributes no rules.
verification.md listed scripts/check-changelog-touched.sh in the local
gate, but the script did not exist (exit 127). Adds it: when a change set
modifies Sources/*.swift it must also update CHANGELOG.md, comparing the
branch against its base plus the working tree, no-op on a clean base, with
a CHANGELOG_SKIP escape hatch for refactor-only changes. Wires it into
check-all.sh alongside the other shell gates.
Adds the Unreleased changelog entry for the datatypeLibrary resolution,
value-space <value> comparison, nsName subtraction, and compact-syntax
annotations/div/concatenation work, and updates the README suite count to
573 tests in 84 suites.
A string literal split with ~ ("a" ~ "b") is the single literal "ab",
the way long values and namespace URIs are wrapped across lines. The fold
applies wherever a string literal is read: value literals and the URIs of
namespace/datatypes/include/external declarations.
A <value> pattern now carries its datatype, so matching compares the
instance and the literal in that type's value space rather than purely
lexically. Numeric and date/time types compare by value (1 equals 01,
1.5 equals 1.50); booleans treat 1/true and 0/false as equal; string and
token compare by their whitespace-normalized lexical form, as before.
Untyped values default to the built-in token type, and a bare string
literal in the compact syntax is token-typed. Durations and binary types
fall under the lexical rule.
Adds a datatypeLibrary-aware datatype resolver to the XML-syntax parser:
the in-scope library is inherited from the nearest ancestor, the default
(empty) library defines only string and token, and the W3C XML Schema
library defines the full built-in set. A type the in-scope library does
not define is an unknown datatype, so the <data>/<value> pattern matches
nothing rather than silently validating.
Adds an nsNameExcept name-class case so nsName with an <except> child
(XML syntax) and prefix:* - name subtraction (compact syntax) narrow a
namespace wildcard. The compact lexer splits prefix:* into a trailing-
colon word plus a star symbol, which the parser now recognizes.
Existing RELAX NG facet tests declared XSD types without the library and
relied on lenient resolution; they now declare the XSD datatypeLibrary,
matching what a conformant processor requires.
