[plt-scheme] lex and yacc rules for scheme

[Deva Seetharam <deva@media.mit.edu>]

hi all,

     i am writing a compiler for a language for programming distributed 
     embedded systems. the syntax of the language is similar to that
     of scheme. i am looking for the (lex/yacc) rules written for scheme. 
     where i can find them?

     i am not looking for just the ebnf. i would like to see how the ebnf
     productions have been translated into lex and yacc rules.

     has a scheme compiler/interpreter been written in scheme lalr parsers
     included in plt-scheme or bigloo or parsing tools (gambit) developed
at univ of montreal?

     thanks,
     deva