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LAR-19642-1: Visual Studio Code Extension for PVS
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releases version 1.0.13 Nov 12, 2019
vscode-pvs
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README.md

README.md

VSCode-PVS: An Integrated Development Environment for the Prototype Verification System

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.

Latest version

vscode-pvs-1.0.13

Functionalities

The main functionalities provided by the environment are as follows:

  • Syntax highlighting: PVS keywords and library functions are automatically highlighted.

  • Autocompletion and code snippets: Tooltips suggesting function names and language keywords are automatically presented to the user when the user is typing a symbol name in the editor. 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 developer places the cursor over an identifier.

  • Go-to definition: Navigation of symbol definitions can be performed with simple point-and-click actions: the user places the cursor over the name of an identifier, and a click on the name of the identifier while holding the Ctrl key down allow to jump to the location where the identifier is declared.

  • 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.

  • Theory Explorer: The overall structure of a set of PVS theories is rendered using an interactive tree-based view. It shows the set of PVS theories in the active workspace, as well as the name and status (proved, unfinished, etc.) of the theorems defined in each theory. Point-and-click actions can be used to jump to theory definitions and type-check the theories.

  • Proof Explorer: Actionable commands can be used to start a proof, and an interactive tree view can be used to view and edit the proof tree. An integrated command line allows interaction with the theorem prover. Auto-completion is provided for prover commands, as well as access to the commands history.

Requirements

Installation instructions

  1. Download the latest release of VSCode-PVS from the github repository
  2. Install VSCode-PVS in Visual Studio Code: Extensions tab -> "..." menu -> "Install from VSIX”, and select the downloaded .vsix file
  3. Have fun using the extension!

Updating VSCode-PVS

When a new release of VSCode-PVS is available in the github repository, download the new release and install it in Visual Studio Code:

  • Extensions tab -> "..." menu -> "Install from VSIX”, and select the downloaded .vsix file

All settings and preferences from the previous version of VSCode-PVS will be maintained.

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.

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