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arXiv · 1105.2576

TRX: A Formally Verified Parser Interpreter

Adam Koprowski·Henri Binsztok
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Abstract

Parsing is an important problem in computer science and yet surprisingly little attention has been devoted to its formal verification. In this paper, we present TRX: a parser interpreter formally developed in the proof assistant Coq, capable of producing formally correct parsers. We are using parsing expression grammars (PEGs), a formalism essentially representing recursive descent parsing, which we consider an attractive alternative to context-free grammars (CFGs). From this formalization we can extract a parser for an arbitrary PEG grammar with the warranty of total correctness, i.e., the resulting parser is terminating and correct with respect to its grammar and the semantics of PEGs; both properties formally proven in Coq.

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BibTeXRIS

Adam Koprowski, Henri Binsztok. 2011-05-12. TRX: A Formally Verified Parser Interpreter. https://doi.org/10.2168/lmcs-7(2:18)2011

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