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feat(treesitter)!: don't parse tree in get_parser() or start()

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**Problem:** `vim.treesitter.get_parser()` and `vim.treesitter.start()`
both parse the tree before returning it. This is problematic because if
this is a sync parse, it will stall the editor on large files. If it is
an async parse, the functions return stale trees.

**Solution:** Remove this parsing side effect and leave it to the user
to parse the returned trees, either synchronously or asynchronously.
This commit is contained in:
Riley Bruins
2024-12-20 16:23:52 -08:00
parent 45e606b1fd
commit bd4ca22d03
6 changed files with 18 additions and 9 deletions
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2
test/functional/treesitter/node_spec.lua
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@@ -20,6 +20,7 @@ describe('treesitter node API', function()
insert('F')
exec_lua(function()
vim.treesitter.start(0, 'lua')
vim.treesitter.get_parser(0):parse()
vim.treesitter.get_node():tree()
vim.treesitter.get_node():tree()
collectgarbage()
@@ -45,6 +46,7 @@ describe('treesitter node API', function()
-- this buffer doesn't have filetype set!
insert('local foo = function() end')
exec_lua(function()
vim.treesitter.get_parser(0, 'lua'):parse()
_G.node = vim.treesitter.get_node({
bufnr = 0,
pos = { 0, 6 }, -- on "foo"