An object oriented approach to parser generation in C++

In this paper we describe the design and implementation of a system for representing context-free grammars in C++. The system allows for grammar representation at the object level, providing enhanced modularity and flexibility when compared to traditional generator-based approaches. We also describe the transformation of grammar flow analysis problems into an object-oriented framework using the Visitor pattern, as well as the implementation of a top-down LL(1) parser. As such, this work represents the synthesis of three presently disparate fields in parser design and implementation: combinator parsing, fixpoint-based grammar flow analysis, and object-oriented design.