2026-07-23T15:54:48Z https://drops.dagstuhl.de/oai

oai:drops-oai.dagstuhl.de:3513 2024-03-06T10:28:57Z ddc:004 open_access

Generating flex Lexical Scanners for Perl Parse::Yapp Simões, Alberto Carvalho, Nuno Ramos Almeida, José João flex Perl yapp lexical analyzer Perl is known for its versatile regular expressions. Nevertheless, using Perl regular expressions for creating fast lexical analyzer is not easy. As an alternative, the authors defend the automated generation of the lexical analyzer in a well known fast application (flex) based on a simple Perl definition in the syntactic analyzer. In this paper we extend the syntax used by Parse::Yapp, one of the most used parser generators for Perl, making the automatic generation of flex lexical scanners possible. We explain how this is performed and conclude with some benchmarks that show the relevance of the approach. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Alberto Simões and Nuno Ramos Carvalho and José João Almeida 2012 Is Part Of OASIcs, Volume 21, 1st Symposium on Languages, Applications and Technologies (2012) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/OASIcs.SLATE.2012.41 urn:nbn:de:0030-drops-35133 https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.SLATE.2012.41 eng https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode