The Jaza Animator

Jaza is an `Animator' for the Z formal specification language.

It is intended to help you:

• evaluate Z expressions;
• test Z schemas against example data values;
• execute some Z specifications.

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This is a Github mirror of the original Jaza source code

Note that the Jaza homepage at http://www.cs.waikato.ac.nz/~marku/jaza/ is no longer available (but is archived at https://web.archive.org/web/20170411233059/http://www.cs.waikato.ac.nz/~marku/jaza/).

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Copyright (C) Mark Utting, 2000-2005.
Department of Computer Science,
The University of Waikato,
New Zealand.

See COPYING (GPL2) for license and warranty information.

See userman/master.pdf for full documentation and the examples directory for several example specifications.

Quick Start Guide

1. If you have a compiled version of Jaza, you should be able to just execute the jaza program that is in this directory.

2. If you have the source distribution, you must install Hugs (from http://www.haskell.org/hugs), then type:

   runhugs TextUI

Either way, you should see the prompt JAZA>. Then you can type help to see a summary of the available commands.

Please email marku@cs.waikato.ac.nz if you have problems/questions.

Known Bugs/Limitations

Jun05:

A recent optimisation to flatten nested \exists quantifiers, does not handle the case where there are several \exists quantifiers at the same level with the same bound variable names.

For example,

\{.... | (\exists x:T1 @...) \land (\exists x:T2 @...) \} 

can produce strange errors. The workaround to this is to rename some of the bound variables...
(This is also why you should expect one test in tests/scope.jaza to fail.)

Generics, axiomatic definitions, and recursive freetypes are not handled.