CSE 401, Au '02: Assignment #6, Due Friday, 12/09/02

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Individual homework

Project

Finish the implementation of the new PL/0. This notably includes:

• The and if and or else operators.

• Storage layout for the extended PL/0 language.  This is a bit tricky because we haven't talked about all the issues yet (due to the lost class) but you should find your way easily by looking at the existing code and by minding the alignment issues. As always, email support would be helpful. Run the extended compiler with the "-r -R" options to print the runtime space allocation.

• Full array support (nota bene: arrays of arrays of arrays of...).
• Return values WITH a value.

  By this time, your compiler should be quite complete, and ready to be delivered to your eager customers! Don't forget to mop around your old code a little. We're not strong on where you put those brackets, but make sure the design is nicely put together, no loose public variables roam around, and that the temporaries don't have naughty names (I have a number of stories to share about that, including a couple from my own 401 TAship). It should go without saying that your compiler should compile, and that warning-free, and that it should compile your tests properly.

  As usual, turn in only one solution per group, including:

  • Paper Turnin:
    • a summary of your test cases,
    • printouts of those files in which you make major changes (presumably only symtab.c and type.h).
    As usual, please highlight your changes on your listings, and staple them for convenient reading.
  • Electronic Turnin:
    • Also turn in your whole directory, including test cases, electronically.

  As usual, you will be graded on correctness of your implementation, on clarity and good design of your implementation, and on sufficiency of your test cases.

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