Rex: Symbolic Regular Expression Explorer

  • Authors:
  • Margus Veanes;Peli de Halleux;Nikolai Tillmann

  • Affiliations:
  • -;-;-

  • Venue:
  • ICST '10 Proceedings of the 2010 Third International Conference on Software Testing, Verification and Validation
  • Year:
  • 2010

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Abstract

Constraints in form regular expressions over strings are ubiquitous. They occur often in programming languages like Perl and C#, in SQL in form of LIKE expressions, and in web applications. Providing support for regular expression constraints in program analysis and testing has several useful applications. We introduce a method and a tool called Rex, for symbolically expressing and analyzing regular expression constraints. Rex is implemented using the SMT solver Z3, and we provide experimental evaluation of Rex.