Grammatical Aspects for Language Descriptions

Details Grammatical Aspects for Language Descriptions Grammatical Aspects for Language Descriptions

2010-01-16

arxiv.org/abs/1001.2817v1

Computer Science

Programming Languages

Submitted to LDTA, 15 pages

Scientific paper

For the purposes of tool development, computer languages are usually described using context-free grammars with annotations such as semantic actions or pretty-printing instructions. These descriptions are processed by generators which automatically build software, e.g., parsers, pretty-printers and editing support. In many cases the annotations make grammars unreadable, and when generating code for several tools supporting the same language, one usually needs to duplicate the grammar in order to provide different annotations for different generators. We present an approach to describing languages which improves readability of grammars and reduces the duplication. To achieve this we use Aspect-Oriented Programming principles. This approach has been implemented in an open-source tool named Grammatic. We show how it can be used to generate pretty-printers and syntax highlighters.

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