Welcome to VSCode-PVS!

VSCode-PVS is a new integrated development environment for creating, evaluating and verifying PVS specifications. The environment redefines the way developers interact with PVS, and better aligns the PVS front-end to the functionalities provided by development environments used by software developers.

Documentation

• Walkthrough on VSCode-PVS
• Quick reference guide for the VSCode-PVS User Interface
• FAQs on VSCode-PVS, including troubleshooting techniques for basic problems.
• Are you new to PVS? Try out our tutorial!
• Join the new PVS group on Google

Publications

• Paolo Masci and César Muñoz, An Integrated Development Environment for the Prototype Verification System, Electronic Proceedings in Theoretical Computer Science (EPTCS), Vol. 310, pp. 35-49, 2019 [PDF][BibTeX]
• Paolo Masci and Aaron Dutle, Proof Mate: an Interactive Proof Helper for PVS, NASA Formal Methods Symposium (NFM2022), Lecture Notes in Computer Science, Springer, 2022 [PDF][BibTex]

Functionalities

• Syntax highlighting: PVS keywords and library functions are automatically highlighted.
• Autocompletion and code snippets: Tooltips suggesting function names and language keywords are automatically presented in the editor when placing the mouse over a symbol name. Code snippets are provided for frequent modeling blocks, e.g., if-then-else.
• Hover information for symbol definitions: Hover boxes providing information about identifiers are automatically displayed when the user places the cursor over an identifier.
• Go-to definition: Click on the name of the identifier while holding down the Ctrl key to jump to the location where the identifier is declared.
• Peek definitions: Symbol definitions can be shown in mini editors embedded in the current view.
• Live diagnostics: Parsing is automatically performed in the background, and errors are reported in-line in the editor. Problematic expressions are underlined with red wavy lines. Tooltips presenting the error details are shown when the user places the cursor over the wavy lines.
• Outline View: Interactive tree view showing the outline of the pvs file open in the editor. Point-and-click actions can be used to jump to definitions.
• Workspace Explorer: Interactive tree view showing all theories in the current workspace, name and status of theorems and typecheck conditions.
• Proof Explorer: Interactive tree view for viewing and editing the current proof.
• Prover Console: An integrated terminal for interacting with the theorem prover. Auto-completion is provided (using the TAB key) for prover commands, as well as access to the commands history.
• Evaluator Console: An integrated terminal for evaluating PVS expressions in PVSio.
• Proof Mate: Helper tool, provides functionalities for suggesting proof commands, sketching proof attempts, and repairing broken proofs during interactive proof sessions.
• Prototype Builder: Rapid prototyping toolkit, for building interactive visual simulations based on PVS specifications.

Notices

Copyright

Copyright 2019 United States Government as represented by the Administrator of the National Aeronautics and Space Administration. All Rights Reserved.

Disclaimers

No Warranty: THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE. THIS AGREEMENT DOES NOT, IN ANY MANNER, CONSTITUTE AN ENDORSEMENT BY GOVERNMENT AGENCY OR ANY PRIOR RECIPIENT OF ANY RESULTS, RESULTING DESIGNS, HARDWARE, SOFTWARE PRODUCTS OR ANY OTHER APPLICATIONS RESULTING FROM USE OF THE SUBJECT SOFTWARE. FURTHER, GOVERNMENT AGENCY DISCLAIMS ALL WARRANTIES AND LIABILITIES REGARDING THIRD-PARTY SOFTWARE, IF PRESENT IN THE ORIGINAL SOFTWARE, AND DISTRIBUTES IT "AS IS."

Waiver and Indemnity: RECIPIENT AGREES TO WAIVE ANY AND ALL CLAIMS AGAINST THE UNITED STATES GOVERNMENT, ITS CONTRACTORS AND SUBCONTRACTORS, AS WELL AS ANY PRIOR RECIPIENT. IF RECIPIENT'S USE OF THE SUBJECT SOFTWARE RESULTS IN ANY LIABILITIES, DEMANDS, DAMAGES, EXPENSES OR LOSSES ARISING FROM SUCH USE, INCLUDING ANY DAMAGES FROM PRODUCTS BASED ON, OR RESULTING FROM, RECIPIENT'S USE OF THE SUBJECT SOFTWARE, RECIPIENT SHALL INDEMNIFY AND HOLD HARMLESS THE UNITED STATES GOVERNMENT, ITS CONTRACTORS AND SUBCONTRACTORS, AS WELL AS ANY PRIOR RECIPIENT, TO THE EXTENT PERMITTED BY LAW. RECIPIENT'S SOLE REMEDY FOR ANY SUCH MATTER SHALL BE THE IMMEDIATE, UNILATERAL TERMINATION OF THIS AGREEMENT.