Migratjng Overture to a difgerent IDE Peter W. V. Tran-Jrgensen, - - PowerPoint PPT Presentation

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Migratjng Overture to a difgerent IDE Peter W. V. Tran-Jrgensen, - - PowerPoint PPT Presentation

Nov 19, 2022 574 likes •761 views

Migratjng Overture to a difgerent IDE Peter W. V. Tran-Jrgensen, Tomas Kulik Contributjon VDM-Mode for Emacs Syntax highlightjng Syntax validatjon REPL VDM Templates Pretuy printjng Packages accepted into MELPA Peter

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Migratjng Overture to a difgerent IDE

Peter W. V. Tran-Jørgensen, Tomas Kulik

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SLIDE 2

Contributjon

  • VDM-Mode for Emacs

− Syntax highlightjng − Syntax validatjon − REPL − VDM Templates − Pretuy printjng − Packages accepted into MELPA

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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The need

 Eclipse usage is

falling

 Pointed at 16th

Overture workshop

 Emacs package as a

case study

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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SLIDE 4

Why Emacs?

  • Popular text editor
  • Ofuen used as IDE
  • Massively extensible
  • Use of third party packages
  • Less than 400 LoC

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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Enabling Emacs packages

 prog-mode

− Syntax highlightjng and indentatjon rules

 comint-mode

− REPL (interactjve shell)

 fmycheck

− Syntax checking framework

 yasnippet

− Template expansion system

 prettjfy-symbols-mode

− Replacement of ASCII characters with Unicode

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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Syntax highlightjng

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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Syntax highlighting

 vdm-mode derived from prog-mode

− Keyword, type, value highlighting − Pretty printing of characters − Characters saved as ASCII representation − Detection of VDM dialect

 Comparable to Overture

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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Syntax validatjon

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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Syntax validation

 Based on flycheck

− Errors − Warnings − In margin and echo area − Interactive list of errors − Errors as pop ups

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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The REPL

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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The REPL

 vdm-comint based on comint

− Run VDM in REPL-like fashion − Send parts of the model directly to the REPL − Load files associated with current VDM project

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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VDM templates

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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VDM templates

 vdm-snippets based on yasnippet

− Generation of skeleton of VDM syntax − Function template expansion − Operation template expansion − Module template expansion − Class template expansion

 Generate and fill in placeholders

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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What did it take?

 Surprisingly little:

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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How does it compare?

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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Conclusion and future plans

 Basic VDM features in few LoC

− Syntax highlighting (145) − Syntax validation (32) − REPL (102) − Template expansion (13)

 Much more work required to reach full IDE  Language Server Protocol (LSP)

− Increase uptake of Overture

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Peter W. V. Tran-Jørgensen, Tomas Kulik

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Where to find?

 Github:  https://github.com/peterwvj/vdm-mode

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Peter W. V. Tran-Jørgensen, Tomas Kulik