Last homework! Deadline: 5.30pm, Thursday 13 November 2003.
Download and unpack the interpreter archive for this course, and make sure you can compile and run the interpreter.
When you run the interpreter, you will get messages saying "Tests failed". Your homework is to get rid of these messages!
Note that the typechecker compiles, but it does not check programs which use myType, for example:
Interpreting interpreter/tests/TestPoint02.hob At line 69 the interpreter produced output Exception: Method <= in class ColoredPoint has parameter p with undefined type myType rather than // Initial state typechecked OK!
This week, the problem is that the static semantics of
Hobbes is not complete. It is missing most of the code for
You should edit
hobbes/statics/TypeCheck.java to finish
the interpreter. Note that
does not need to change, and in particular it already contains
a version of
which takes an extra type parameter to replace
as discussed in class.
You should add comments to the code, indicating which edits you made, for example:
// Edited by Wilma Flintstone: print ("hello"); // End of edits.
Once you have a working edited version of
create a zip archive containing that file, plus any other files
you edited, and submit it using the Course OnLine system.