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fix(lsp): check for valid buf before processing semantic tokens response

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Problem: There is no check for buffer validity before processing
  semantic tokens response. This can lead to `Invalid buffer id` error
  if processing request takes a long time and the buffer is wiped out.

  For example, this can happen after by accident navigating to a buffer
  from different project which leads to first loading project's
  workspace and *then* processing semantic tokens. During that time
  a buffer can be wiped out, as navigation to it was by accident.

Solution: Add extra check for buffer validity before processing semantic
  tokens response.
This commit is contained in:
Evgeni Chasnovski
2025-02-06 10:33:15 +02:00
committed by Lewis Russell
parent ad853d1df0
commit a9cdf76e3a
1 changed files with 8 additions and 2 deletions
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10
runtime/lua/vim/lsp/semantic_tokens.lua
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@@ -337,6 +337,10 @@ function STHighlighter:process_response(response, client, version)
return
end
if not api.nvim_buf_is_valid(self.bufnr) then
return
end
-- if we have a response to a delta request, update the state of our tokens
-- appropriately. if it's a full response, just use that
local tokens ---@type integer[]
@@ -376,8 +380,10 @@ function STHighlighter:process_response(response, client, version)
current_result.highlights = highlights
current_result.namespace_cleared = false
-- redraw all windows displaying buffer
api.nvim__redraw({ buf = self.bufnr, valid = true })
-- redraw all windows displaying buffer (if still valid)
if api.nvim_buf_is_valid(self.bufnr) then
api.nvim__redraw({ buf = self.bufnr, valid = true })
end
end
--- @param bufnr integer