Natural and Flexible Error Recovery for Generated Modular Language Environments
Maartje de Jonge, Lennart C. L. Kats, Emma Soderberg, Eelco Visser. Natural and Flexible Error Recovery for Generated Modular Language Environments. ACM Transactions on Programming Languages and Systems (TOPLAS), 2013. [draft] [bib]
Integrated development environments (IDEs) increase programmer productivity, providing rapid, interactive feedback based on the syntax and semantics of a language. Unlike conventional parsing algorithms, scannerless generalized-LR parsing supports the full set of context-free grammars, which is closed under composition, and hence can parse languages composed from separate grammar modules. To apply this algorithm in an interactive environment, this paper introduces a novel error recovery mechanism. Our approach is language-independent, and relies on automatic derivation of recovery rules from grammars. By taking layout information into consideration it can efficiently suggest natural recovery suggestions.
More information about this project can be found at the Permissive Grammars project homepage.