A directed-graph syntax analyser for the ACL-NOVA system.

Abstract

The syntax of the ACL language is described in terms of a directed-graph structure which is written in a machine independent language and automatically translated to NOVA assembly language. A syntax analyser based on this directed-graph structure is incorporated into a new version of the ACL-NOVA system to improve the response to terminal input and this, together with a number of other modifications, reduces the size of the system from 6¾K to under 6K words.