Boolean operators

In class we started to implement Boolean operations. We can lex "&&" (AND) "||" (OR) and "!" (NOT) and the comparison "==" (D_EQUAL). We can parse AND OR and NOT, but forgot to parse D_EQUAL. We have sucessfully compiled Not, including error checking.

Assignment

I have placed a working copy of our compiler in this directory on github.

Complete the compiler in this directory for the Boolean operators And and Or.
Complete the AST, parser and compiler in this directory for the comparison operator "==". This one is tricky, you may have to go back and read Lecture 5 again.

Extra credit.

If you feel adventurous, include error checking to verify the types of the operands like we did with not.

Test programs

I have included 3 test programs, right now they all fail:

$ make and.run
dune exec ./compiler.exe and.dp > and.s
Fatal error: exception Failure("Todavia no se como")
make: *** [Makefile:8: and.s] Error 2
rm and.s

$ make or.run
dune exec ./compiler.exe or.dp > or.s
Fatal error: exception Failure("Todavia no se como")
make: *** [Makefile:8: or.s] Error 2
rm or.s

$ make same.run
dune exec ./compiler.exe same.dp > same.s
Fatal error: exception Dune__exe__Parser.MenhirBasics.Error
make: *** [Makefile:8: same.s] Error 2
rm same.s

When you finish your assignment they should all run.

Deliverables

Run dune clean, then make handin.tar. Submit handin.tar in moodle.