FPP Language Server Protocol

The design of the FPP language server implementation is roughly based on experience from the previous VSCode-native implementation and the official rust-analyzer LSP.

The basic premise is to split analysis and diagnostics from the general file operations. Analysis is a debounced operation that occurs once document edits have settled. Lexical and parsing analysis is still performed synchronously (relatively synchronous) to document updates. Parsing results will populate a cache to avoid unnecessary reprocessing. The cache will be used during analysis and for generating realtime highlights to text documents.

Because analysis is run offline (out of the tight update loop of document edits), snapshots of the analysis will be stored as it is updated periodically. While handling requests from the client, handlers can choose to use the "latest" analysis results which may not be perfectly inline will all document edits, or synchronize to the latest document changes.

Request and notification handlers

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Credits

Author: Andrei Tumbar

GitHub Statistics

Data verified by PyPI on Aug 12, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

Apache-2.0

Requires

Python >=3.8

Tags

fprime fpp lsp language-server

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