Common Algebraic Specification Language
The Common Algebraic Specification Language is a general-purpose specification language based on first-order logic with induction. Partial functions and subsorting are also supported.
Overview
CASL has been designed by CoFI, the Common Framework Initiative, with the aim to subsume many existing specification languages.CASL comprises four levels:
- basic specifications, for the specification of single software modules,
- structured specifications, for the modular specification of modules,
- architectural specifications, for the prescription of the structure of implementations,
- specification libraries, for storing specifications distributed over the Internet.
Extensions
Several extensions of CASL have been designed:- HasCASL, a higher-order extension
- CoCASL, a coalgebraic extension
- CspCASL, a concurrent extension based on CSP
- ModalCASL, a modal logic extension
- CASL-LTL, a temporal logic extension
- HetCASL, an extension for heterogeneous specification