What is it about?
Syntactical error recovery is an essential feature to integrate a parser into an IDE. We present a conservative extension of Parsing Expression Grammars (PEGs) that adds a syntax error recovery mechanism for PEGs. By using this mechanism we can associate a label to each error and then attach an error message and a recovery expression to each label.
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Why is it important?
By extending PEGs with a proper error recovery mechanism we enable the use of PEG parsers in IDEs.
Perspectives
I expect that the ideas presented in this article help to guide the implementation of more robust PEG parsers.
Sérgio Queiroz de Medeiros
Universidade Federal do Rio Grande do Norte
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This page is a summary of: Syntax error recovery in parsing expression grammars, April 2018, ACM (Association for Computing Machinery),
DOI: 10.1145/3167132.3167261.
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