Sup! I'm trying to understand how to build a parser, because

>>60965619
Read the manuals for lex and yacc.
(Or flex and bison.)

Or just get your head down and write some code.

I used BNFC for parser design for a project @ uni http://bnfc.digitalgrammars.com/

This is a bit old, but free. I guess it's worth trying if you want to really understand how parsing works: https://dickgrune.com/Books/PTAPG_1st_Edition/

>>60965619
http://www.antlr.org/

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. From a grammar, ANTLR generates a parser that can build and walk parse trees.

Or you can use the Flex + Bison.

>>60966426
Also, you are in for a world of pain OP.
Languages are a pita.

Read about extended BNF first.

>>60965671
fpbp