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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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4
test/functional/treesitter/language_spec.lua
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@@ -117,6 +117,7 @@ describe('treesitter language API', function()
'<node translation_unit>',
exec_lua(function()
local langtree = vim.treesitter.get_parser(0, 'c')
langtree:parse()
local tree = langtree:tree_for_range({ 1, 3, 1, 3 })
return tostring(tree:root())
end)
@@ -133,6 +134,7 @@ describe('treesitter language API', function()
'<node translation_unit>',
exec_lua(function()
local langtree = vim.treesitter.get_parser(0, 'c')
langtree:parse()
local tree = langtree:tree_for_range({ 10, 10, 10, 10 })
return tostring(tree:root())
end)
@@ -149,6 +151,7 @@ describe('treesitter language API', function()
'<node primitive_type>',
exec_lua(function()
local langtree = vim.treesitter.get_parser(0, 'c')
langtree:parse()
local node = langtree:named_node_for_range({ 1, 3, 1, 3 })
return tostring(node)
end)
@@ -160,6 +163,7 @@ describe('treesitter language API', function()
exec_lua(function()
_G.langtree = vim.treesitter.get_parser(0, 'lua')
_G.langtree:parse()
_G.node = _G.langtree:node_for_range({ 0, 3, 0, 3 })
end)