CASL: From Semantics to Tools

CASL, the common algebraic speciication language, has been developed as a language that subsumes many previous algebraic spec-iication frameworks and also provides tool interoperability. CASL is a complex language with a complete formal semantics. It is therefore a challenge to build good tools for CASL. In this work, we present and discuss the Bremen HOL-CASL system, which provides parsing, static checking, conversion to LaTeX and theorem proving for CASL specii-cations. To make tool construction manageable, we have followed some guidelines: re-use of existing tools, interoperability of tools developed at diierent sites, and construction of generic tools that can be used for several languages. We describe the structure of and the experiences with our tool and discuss how the guidelines work in practice.