CBS is a framework and meta-language for component-based specification of programming languages. The main idea is to translate languages to so-called 'funcons' (fundamental programming constructs). The behaviour of the funcons has already been specified, so translating a language to funcons determines the behaviour of programs in that language.
Funcons are to have fixed definitions, so no version control will be needed for their safe reuse in CBS language specifications. The aim of this beta-release of CBS and its initial library of funcons is to allow review of the current funcon definitions, and subsequent adoption of suggestions for improvement, before their full release.
The development of the CBS framework, meta-language, and tool support, together with examples of language specification using CBS, is the main activity of the PLanCompS project. PLanCompS is an open international collaboration, and new participants are welcome!