The paper: https://www.antlr.org/papers/allstar-techreport.pdf https://www.antlr.org/papers/allstar-techreport.pdf Has the important detail why it scored good

The paper: https://www.antlr.org/papers/allstar-techreport.pdf https://www.antlr.org/papers/allstar-techreport.pdf Has the important detail why it scored good in benchmarks against other parsers: "7.3 Effect of lookahead DFA on performance The lookahead DFA cache is critical to ALL(*) performance. To demonstrate the cache’s effect on parsing speed, we disabled the DFA and repeated our Java experiments. Consider the 3.73s parse time from Figure 9 to reparse the Java corpus with pure cache hits. With the lookahead DFA cache disabled completely, the parser took 12 minutes (717.6s)." I'd still most probably hand-roll, at least when making something for a long-term project, and not some "demo" -- there the stability and ease of maintenance is more important than fast availability of initial results.