Creating modular and reusable DSL textual syntax definitions with Grammatic/ANTLR

In this paper we present Grammatic – a tool for textual syntax definition. Grammatic serves as a front-end for parser generators (and other tools) and brings modularity and reuse to their development artifacts. It adapts techniques for separation of concerns from ApsectOriented Programming to grammars and uses templates for grammar reuse. We illustrate usage of Grammatic by describing a case study: bringing separation of concerns to ANTLR parser generator, which is achieved without a common timeand memory-consuming technique of building an AST to separate semantic actions from a grammar definition.