docs(xml-libxml): plan for Java-backed XML::LibXML port#581
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Scopes a tiered re-implementation of XML::LibXML on top of the JDK's javax.xml / org.w3c.dom stack, modelled on the existing XML::Parser port. Motivated by `jcpan -t XML::Diff` failing on the unsatisfiable Alien::Libxml2 / XS dependency chain. Plan only -- no code changes. Generated with [Devin](https://cli.devin.ai/docs) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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Summary
Adds a planning document at
dev/modules/xml_libxml.mdscoping aJava-backed re-implementation of
XML::LibXMLfor PerlOnJava.Plan only — no code changes.
Motivation
jcpan -t XML::Diffcurrently fails because XML::Diff requiresXML::LibXML 1.56, and XML::LibXML cannot be installed under jperl:
Makefile.PLrequiresAlien::Libxml2, which expects either asystem
libxml2viapkg-configor anAlien::Build-installed sharedir — neither is available.
LibXML.xscannot be loaded by the JVM.Result:
Can't locate Alien/Libxml2/ConfigData.pm, dependent testsuites abort on
use XML::LibXML;.Approach
Mirror the
XML::Parserport (XMLParserExpat.java, ~2,200 LOC ofJDK SAX glue) with
XMLLibXML.javabacked byjavax.xml.parsers+org.w3c.dom+javax.xml.xpath. No new Maven/Gradle dependenciesfor Tier A.
Tiers (sized in the doc)
Upstream XML::LibXML 2.0210 is ~10k
.pm+ ~5k.xsfor reference.Out of scope for this PR
Implementation. A follow-up branch will scaffold Tier A.
Test plan
jcpan -t XML::Diffpasses 38/38;makeandmake test-bundled-modulesstay green.Generated with Devin