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International Symposium on Formal Methods

FM 2019: Formal Methods. FM 2019 International Workshops pp 136–151Cite as

An Abstract Domain for Objects in Dynamic Programming Languages

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Part of the Lecture Notes in Computer Science book series (LNPSE,volume 12233)

Abstract

Dynamic languages, such as JavaScript, PHP, Python or Ruby, provide a memory model for objects data structures allowing programmers to dynamically create, manipulate, and delete objects’ properties. Moreover, in dynamic languages it is possible to access and update properties by using strings: this represents a hard challenge for static analysis. In this paper, we exploit the finite state automata abstract domain, approximating strings, in order to define a novel abstract domain for objects. We design an abstract interpreter useful to analyze objects in a toy language, inspired by real-word dynamic programming languages. We then show, by means of minimal yet expressive examples, the precision of the proposed abstract domain.

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  • DOI: 10.1007/978-3-030-54997-8_9
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Notes

  1. 1.

    We assume that all negations ! have been removed using DeMorgan’s laws and usual arithmetic laws: \( {\texttt {!}}\,(\mathsf {b}_1 \, || \, \mathsf {b}_2) \equiv {\texttt {!}}\,\mathsf {b}_1 \, {\texttt { \& \& }} \, {\texttt {!}}\mathsf {b}_2\), \({\texttt {!}}\,(\mathsf {a}_1< \mathsf {a}_2) \equiv (\mathsf {a}_2 < \mathsf {a}_1 \, || \, \mathsf {a}_2 \, {\texttt {==}} \, \mathsf {a}_1)\), etc.

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Authors and Affiliations

  1. Department of Computer Science, University of Verona, Verona, Italy

    Vincenzo Arceri, Michele Pasqua & Isabella Mastroeni

Authors
  1. Vincenzo Arceri
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  2. Michele Pasqua
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  3. Isabella Mastroeni
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Corresponding author

Correspondence to Vincenzo Arceri .

Editor information

Editors and Affiliations

  1. McMaster University, Hamilton, ON, Canada

    Emil Sekerinski

  2. University of Porto, Porto, Portugal

    Nelma Moreira

  3. University of Minho, Braga, Portugal

    José N. Oliveira

  4. Argo Ai, Munich, Germany

    Daniel Ratiu

  5. University of Pisa, Pisa, Italy

    Dr. Riccardo Guidotti

  6. University of Liverpool, Liverpool, UK

    Marie Farrell

  7. University of Liverpool, Liverpool, UK

    Matt Luckcuck

  8. University of Exeter, Exeter, UK

    Diego Marmsoler

  9. University of Minho, Braga, Portugal

    Dr. José Campos

  10. University of Newcastle, Newcastle upon Tyne, UK

    Troy Astarte

  11. Claude Bernard University, Lyon, France

    Dr. Laure Gonnord

  12. Nazarbayev University, Nur-Sultan, Kazakhstan

    Assoc. Prof. Antonio Cerone

  13. University of Surrey, Guildford, UK

    Luis Couto

  14. University of Surrey, Guildford, UK

    Dr. Brijesh Dongol

  15. University of Giessen, Giessen, Germany

    Prof. Dr. Martin Kutrib

  16. University of Lisbon, Lisbon, Portugal

    Pedro Monteiro

  17. Airbus Operations S.A.S., Toulouse, France

    David Delmas

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Arceri, V., Pasqua, M., Mastroeni, I. (2020). An Abstract Domain for Objects in Dynamic Programming Languages. In: , et al. Formal Methods. FM 2019 International Workshops. FM 2019. Lecture Notes in Computer Science(), vol 12233. Springer, Cham. https://doi.org/10.1007/978-3-030-54997-8_9

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  • DOI: https://doi.org/10.1007/978-3-030-54997-8_9

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