CS712/CS812
Project Phase 1
Spring 2006
Due Sunday February 5

Your assignment is to modify the T programming language by adding casting conversion and cast expressions.

These should be based on Java casting conversion and Java cast expressions.

The hard part of this assignment is to integrate cast expressions into the T language. Be sure to consider the following issues:

• Change the assignment conversions to disallow a narrowing reference conversion.

• Change the method invocation conversion to disallow a narrowing reference conversion.

• Review method invocation expressions to see if any further changes are desirable. A key goal of adding cast expressions is to simply the specification and the implementation of method overloading.

• Modify the grammar as necessary. Your modified grammar should be capable of being processed without error by bison.

• Perform other changes as necessary. There may be sections in the specification that need to be considered that I have not thought of, so please keep your eyes open as you are reading the specification.

Archive all your files in a tar file called "phase1.tar". You should submit your tar archive from turing.unh.edu using my "submit" script.

To turn in this assignment, type:
~cs712/bin/submit phase1 phase1.tar

Submissions can be checked by typing (also on turing.unh.edu):
~cs712/bin/scheck phase1

To receive full credit for the assignment, you must turn in your files prior to 8am on Monday February 6. Late submissions will be accepted at a penalty of 2 points for one day late, 5 points for two days late, 10 points for three days late, 20 points for four days late, and 40 points for five days late. No program may be turned in more than 5 days late.

Remember: you are expected to do your own work on this assignment.

Comments and questions should be directed to hatcher@unh.edu