Some software tools used in the development of the prototype york ada compiler

Among the various software tools developed in the early stages of the York Ada compiler project4 are two families of tools described here. Syntax driven generators, distinctive in their inclusion of a mechanism for syntax abstraction and their mode of adaptability, were used to produce a variety of compiler components; interface checkers, automatically generated from specifications of the information intended to pass between components, were used to help isolate and repair faulty components.