antlr@3

Antlr3 has a C API which has been dropped in Antlr4
http://www.antlr.org/ Formula was removed
Last versions were
3.5.2

Recent formula history

FX Coudert antlr@3: remove
ilovezfs Audit fixes for descriptions (#20013)
ilovezfs Indentation style fixes (#19679)
ilovezfs Use “squiggly” heredocs.
Eric Nielsen antlr@3 3.5.2

Formula code at GitHub