About vJASS parser

This is directed to anyone who has any knowledge of parsers but its main focus is Vex. Reason this isn't a PM is because other might be very interested.
1. What did you do to make a vJASS parser? Did you use an existing parser like lex, jflex or did you made one yourself.
2. Does pJASS takes into consideration non-vJASS code, checking its validity or does it leave vJASS checking to regular JASS parser.
3. In what language was pJASS written?

The compiler is called JassHelper, not vJass. PJASS which you seem to mix up with vJass is a syntax checker for JASS.

1. He made his own and used GOLD parser system for some parts in functions.
2. PJASS checks for valid JASS syntax. vJass-only syntax will be reported as errors. JassHelper only converts vJass parts into JASS.
3. PJASS was generated by Lex/Yacc and is in C. JassHelper is written in Delphi/Object Pascal.

I'm currently playing with some JASS syntax checker which I might expand to a vJass syntax checker. If you are interested you should drop by the wc3c IRC server.

There is some good online material about parsers and compilers. Here is a nice collection: http://www.freetechbooks.com/compile...ction-f14.html

I personally like Crenshaw's tutorials. They go straight to the point and you'll be able to make simple compilers after reading it. Assuming you don't get lost or something :)
You'll find them here: http://compilers.iecc.com/crenshaw/

I've written lex/yacc style parsers for ocaml (ocamllex/ocamlyacc) and haskell (alex/happy). Lexing/parsing with lex/yacc parsers is equally painful in all languages, but doing the rest of the compiler stages goes 10x faster in a modern language.

Funny that you say that we had some classes with half built (we did some modificiations to existing scanner.l and yy.tab.c if I remember correctly; the stack, tables and other assembler generator functions were pre-made) lex/yacc parser in classes this semester and it was a piece of cake.

Anyway I was thinking taking JFlex and Cup/ByaccJ and toying around trying to do some language extension like vJASS. It would be a welcome excercise in case sc2 ever needs an extension.

i already played with the thought of extending vJASS to use the damn friend keyword as I need it and Vex doesn't seem to like it...

PJass source code is available here by the way: http://www.wc3c.net/showthread.php?t=75239