antlr-re-search-forward is a compiled Lisp function in `antlr-mode.el'.

(antlr-re-search-forward REGEXP BOUND)

Search forward from point for regular expression REGEXP.
Set point to the end of the occurrence found, and return point. Return
nil if no occurrence was found. Do not search within comments, strings
and actions/semantic predicates. BOUND bounds the search; it is a
buffer position. See also the functions `match-beginning', `match-end'
and `replace-match'.