Antlr is shit; it will waste your time for anything real. Bison+flex (once you figure out the quirks, undocumented assumptions and flags) and treetop are usabl

Antlr is shit; it will waste your time for anything real. Bison+flex (once you figure out the quirks, undocumented assumptions and flags) and treetop are usable. https://www.gnu.org/software/bison/manual/ https://www.gnu.org/software/bison/manual/ http://flex.sourceforge.net/manual/ http://flex.sourceforge.net/manual/ http://treetop.rubyforge.org http://treetop.rubyforge.org Disclaimer: A long time ago in a galaxy, far, far away, I wrote an optimizing Java-to-MIPS compiler (sans GC, so leaky heap) in C++ using Flex/Bison and again in Java using JavaCC.