Module patterns 

XSLT pattern matching (§33, §85 Phase 8).

XSLT patterns are a subset of XPath 1.0 used in match attributes of <xsl:template>, <xsl:key>, <xsl:strip-space>, <xsl:preserve-space>.

Patterns can include:

• Location paths (relative and absolute)
• Union patterns (pattern1 | pattern2)
• Node tests: *, node(), text(), comment(), processing-instruction()
• Attribute axis (@attr)
• Namespace prefix tests (ns:*, ns:name)
• Predicates (limited)
• The id() and key() functions

UPSTREAM-PARITY

Implements XSLT 1.0 §5 “Patterns” with match semantics matching libxslt 1.1.39. Pattern matching uses the XPath 1.0 AST from src/xml/xpath for parsing, then applies XSLT-specific matching rules.

Courts

XSLT-PATTERNS-*

Structs

_xsltPattern

Opaque pattern structure.

_xsltPatternStep

Opaque pattern step structure.

Constants

XSLT_PAT_NO_PRIORITY

Sentinel for “no explicit priority” (upstream XSLT_PAT_NO_PRIORITY).

Functions

get_pattern_matched_names

Get the names matched by a simple name-test pattern.

is_simple_name_pattern

Check if a pattern string matches a single step (simple name test).

is_union_pattern

Check if a pattern is a union pattern (contains |).

xsltCompilePattern^⚠

Compile an XSLT pattern string into a compiled pattern.

xsltDefaultPriority^⚠

Compute default priority for a match pattern.

xsltFreePattern^⚠

Free a compiled pattern.

xsltTestMatchPattern^⚠

Test whether a node matches a compiled pattern tree.

xsltTestPattern^⚠

Test whether a node matches a compiled pattern.