microsoft / microsoft/language-server-protocol
Allow offsets relative to the start of the document (and not the start of the line of the range)
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- Dominant language
- TypeScript
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Description
I have noticed that LSPEclipseUtils.toOffset to recalculate the start and end positions of the diagnostics published by the language server.
This is a performance issue for us because our filesystem implementation is based on remote files, and for the recalculation of these offsets the text of the resource must be fetch from the remote connection.
See https://github.com/eclipse/lsp4e/issues/160. Could we have a new feature so that if the client so prefers, the offset of the ranges are sent relative to the start of the document?
Having such a capability would mean a big performance inprovement for our diagnostics propagation.
I think we could have such a documentPosition instead of the current one, or we could have it as an additional optional property.
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First steps
- Read the whole issue, then the project's contributing guide.
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- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing the language-server protocol position and range definitions, then inspect the referenced LSPEclipseUtils.toOffset behavior and issue 160. Define how document-relative offsets would be represented and kept optional, and document the resolved protocol behavior and performance rationale.
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Assessment
- Tech stack
- typescript
- Domain
- api
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100