YarrrML parser drops closing “)” in contains() XPath inside $(...), generating invalid RML

[ziodave]

Summary

When a YarrrML mapping includes XPath contains(., "…") inside a $(...) expression, the generated RML is invalid. The parser drops the closing ) from contains(...), which causes RMLMapper to fail with
expected ")" found "<eof>".

Environment

• OS: macOS (darwin)
• Node: v22.21.0
• yarrrml-parser: @rmlio/yarrrml-parser@1.12.1
• RMLMapper: v8.1.0

YarrrML input (minimal)

prefixes:
  schema: 'http://schema.org/'
mappings:
  review:
    sources:
      - [__XHTML__~xpath, '/']
    s: ex:review~iri
    po:
      - [schema:positiveNotes, '$(/html/body//h3[contains(., "Pros")]/following::ul[1]/li/span)']

Actual RML output (snippet)

  :om_008 a rr:ObjectMap;
      rr:template "{/html/body//h3[contains(., \"Pros\"}]/following::ul[1]/li/span)";
      rr:termType rr:Literal.

Note the missing closing ) in contains(...).

Expected RML output

  :om_008 a rr:ObjectMap;
      rr:template "{/html/body//h3[contains(., \"Pros\")]/following::ul[1]/li/span)";
      rr:termType rr:Literal.

Impact

RMLMapper fails on the generated RML with:

  java.lang.IllegalArgumentException: expected ")", found "<eof>"

and no output is produced.

Repro steps

1. Run:

  npx @rmlio/yarrrml-parser -i mapping.yarrrml -o mapping.ttl

2. Inspect mapping.ttl for malformed contains(...).
3. Run RMLMapper:

  java -jar rmlmapper.jar -m mapping.ttl -o out.nq

-> fails with the error above.

Additional notes

The issue reproduces with other contains(., "…") expressions and appears only inside $(...) XPath expressions.