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fix(treesitter): redraw added/removed injections properly (#23287)

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When injections are added or removed make sure to:
- invoke 'changedtree' callbacks for when new trees are added.
- invoke 'changedtree' callbacks for when trees are invalidated
- redraw regions when languagetree children are removed
This commit is contained in:
Lewis Russell 2023-04-30 16:11:38 +01:00 committed by GitHub
parent 7e3d6ff405
commit 19a793545f
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 156 additions and 56 deletions
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23
runtime/doc/treesitter.txt
View File

@ -1149,21 +1149,24 @@ LanguageTree:parse({self}) *LanguageTree:parse()*
Return: ~
TSTree[]
LanguageTree:register_cbs({self}, {cbs}) *LanguageTree:register_cbs()*
*LanguageTree:register_cbs()*
LanguageTree:register_cbs({self}, {cbs}, {recursive})
Registers callbacks for the |LanguageTree|.
Parameters: ~
• {cbs} (table) An |nvim_buf_attach()|-like table argument with the
following handlers:
• {cbs} (table) An |nvim_buf_attach()|-like table argument with
the following handlers:
• `on_bytes` : see |nvim_buf_attach()|, but this will be called after the parsers callback.
• `on_changedtree` : a callback that will be called every time
the tree has syntactical changes. It will only be passed one
argument, which is a table of the ranges (as node ranges)
that changed.
• `on_child_added` : emitted when a child is added to the
tree.
• `on_child_removed` : emitted when a child is removed from
• `on_changedtree` : a callback that will be called
every time the tree has syntactical changes. It will
only be passed one argument, which is a table of the
ranges (as node ranges) that changed.
• `on_child_added` : emitted when a child is added to
the tree.
• `on_child_removed` : emitted when a child is removed
from the tree.
• {recursive?} boolean Apply callbacks recursively for all children.
Any new children will also inherit the callbacks.
• {self}
LanguageTree:source({self}) *LanguageTree:source()*

20
runtime/lua/vim/treesitter/highlighter.lua
View File

@ -76,9 +76,6 @@ function TSHighlighter.new(tree, opts)
opts = opts or {} ---@type { queries: table<string,string> }
self.tree = tree
tree:register_cbs({
on_changedtree = function(...)
self:on_changedtree(...)
end,
on_bytes = function(...)
self:on_bytes(...)
end,
@ -87,6 +84,17 @@ function TSHighlighter.new(tree, opts)
end,
})
tree:register_cbs({
on_changedtree = function(...)
self:on_changedtree(...)
end,
on_child_removed = function(child)
child:for_each_tree(function(t)
self:on_changedtree(t:included_ranges(true))
end)
end,
}, true)
self.bufnr = tree:source() --[[@as integer]]
self.edit_count = 0
self.redraw_count = 0
@ -177,10 +185,10 @@ function TSHighlighter:on_detach()
end
---@package
---@param changes integer[][]?
---@param changes Range6[][]
function TSHighlighter:on_changedtree(changes)
for _, ch in ipairs(changes or {}) do
api.nvim__buf_redraw_range(self.bufnr, ch[1], ch[3] + 1)
for _, ch in ipairs(changes) do
api.nvim__buf_redraw_range(self.bufnr, ch[1], ch[4] + 1)
end
end

83
runtime/lua/vim/treesitter/languagetree.lua
View File

@ -51,8 +51,18 @@ local Range = require('vim.treesitter._range')
---| 'on_child_added'
---| 'on_child_removed'
--- @type table<TSCallbackNameOn,TSCallbackName>
local TSCallbackNames = {
on_changedtree = 'changedtree',
on_bytes = 'bytes',
on_detach = 'detach',
on_child_added = 'child_added',
on_child_removed = 'child_removed',
}
---@class LanguageTree
---@field private _callbacks table<TSCallbackName,function[]> Callback handlers
---@field package _callbacks_rec table<TSCallbackName,function[]> Callback handlers (recursive)
---@field private _children table<string,LanguageTree> Injected languages
---@field private _injection_query Query Queries defining injected languages
---@field private _opts table Options
@ -79,7 +89,7 @@ LanguageTree.__index = LanguageTree
--- "injected" language parsers, which themselves may inject other languages, recursively.
---
---@param source (integer|string) Buffer or text string to parse
---@param lang string|nil Root language of this tree
---@param lang string Root language of this tree
---@param opts (table|nil) Optional arguments:
--- - injections table Map of language to injection query strings. Overrides the
--- built-in runtime file searching for language injections.
@ -100,15 +110,15 @@ function LanguageTree.new(source, lang, opts)
or query.get(lang, 'injections'),
_valid = false,
_parser = vim._create_ts_parser(lang),
_callbacks = {
changedtree = {},
bytes = {},
detach = {},
child_added = {},
child_removed = {},
},
_callbacks = {},
_callbacks_rec = {},
}, LanguageTree)
for _, name in pairs(TSCallbackNames) do
self._callbacks[name] = {}
self._callbacks_rec[name] = {}
end
return self
end
@ -121,6 +131,7 @@ local function tcall(f, ...)
local start = vim.loop.hrtime()
---@diagnostic disable-next-line
local r = { f(...) }
--- @type number
local duration = (vim.loop.hrtime() - start) / 1000000
return duration, unpack(r)
end
@ -161,6 +172,9 @@ function LanguageTree:invalidate(reload)
-- buffer was reloaded, reparse all trees
if reload then
for _, t in ipairs(self._trees) do
self:_do_callback('changedtree', t:included_ranges(true), t)
end
self._trees = {}
end
@ -245,9 +259,12 @@ function LanguageTree:parse()
if not self._valid or not self._valid[i] then
self._parser:set_included_ranges(ranges)
local parse_time, tree, tree_changes =
tcall(self._parser.parse, self._parser, self._trees[i], self._source)
tcall(self._parser.parse, self._parser, self._trees[i], self._source, true)
self:_do_callback('changedtree', tree_changes, tree)
-- Pass ranges if this is an initial parse
local cb_changes = self._trees[i] and tree_changes or ranges
self:_do_callback('changedtree', cb_changes, tree)
self._trees[i] = tree
vim.list_extend(changes, tree_changes)
@ -341,7 +358,14 @@ function LanguageTree:add_child(lang)
self:remove_child(lang)
end
self._children[lang] = LanguageTree.new(self._source, lang, self._opts)
local child = LanguageTree.new(self._source, lang, self._opts)
-- Inherit recursive callbacks
for nm, cb in pairs(self._callbacks_rec) do
vim.list_extend(child._callbacks_rec[nm], cb)
end
self._children[lang] = child
self:invalidate()
self:_do_callback('child_added', self._children[lang])
@ -453,6 +477,10 @@ function LanguageTree:set_included_regions(new_regions)
end
if #self:included_regions() ~= #new_regions then
-- TODO(lewis6991): inefficient; invalidate trees incrementally
for _, t in ipairs(self._trees) do
self:_do_callback('changedtree', t:included_ranges(true), t)
end
self._trees = {}
self:invalidate()
else
@ -707,6 +735,9 @@ function LanguageTree:_do_callback(cb_name, ...)
for _, cb in ipairs(self._callbacks[cb_name]) do
cb(...)
end
for _, cb in ipairs(self._callbacks_rec[cb_name]) do
cb(...)
end
end
---@package
@ -855,30 +886,26 @@ end
--- changed.
--- - `on_child_added` : emitted when a child is added to the tree.
--- - `on_child_removed` : emitted when a child is removed from the tree.
function LanguageTree:register_cbs(cbs)
--- @param recursive? boolean Apply callbacks recursively for all children. Any new children will
--- also inherit the callbacks.
function LanguageTree:register_cbs(cbs, recursive)
---@cast cbs table<TSCallbackNameOn,function>
if not cbs then
return
end
if cbs.on_changedtree then
table.insert(self._callbacks.changedtree, cbs.on_changedtree)
local callbacks = recursive and self._callbacks_rec or self._callbacks
for name, cbname in pairs(TSCallbackNames) do
if cbs[name] then
table.insert(callbacks[cbname], cbs[name])
end
end
if cbs.on_bytes then
table.insert(self._callbacks.bytes, cbs.on_bytes)
end
if cbs.on_detach then
table.insert(self._callbacks.detach, cbs.on_detach)
end
if cbs.on_child_added then
table.insert(self._callbacks.child_added, cbs.on_child_added)
end
if cbs.on_child_removed then
table.insert(self._callbacks.child_removed, cbs.on_child_removed)
if recursive then
self:for_each_child(function(child)
child:register_cbs(cbs, true)
end)
end
end

82
test/functional/treesitter/highlight_spec.lua
View File

@ -11,7 +11,7 @@ local eq = helpers.eq
before_each(clear)
local hl_query = [[
local hl_query_c = [[
(ERROR) @error
"if" @keyword
@ -47,7 +47,7 @@ local hl_query = [[
(comment) @comment
]]
local hl_text = [[
local hl_text_c = [[
/// Schedule Lua callback on main loop's event queue
static int nlua_schedule(lua_State *const lstate)
{
@ -64,7 +64,7 @@ static int nlua_schedule(lua_State *const lstate)
return 0;
}]]
local test_text = [[
local test_text_c = [[
void ui_refresh(void)
{
int width = INT_MAX, height = INT_MAX;
@ -85,7 +85,7 @@ void ui_refresh(void)
}
}]]
describe('treesitter highlighting', function()
describe('treesitter highlighting (C)', function()
local screen
before_each(function()
@ -105,13 +105,13 @@ describe('treesitter highlighting', function()
[11] = {foreground = Screen.colors.Cyan4};
}
exec_lua([[ hl_query = ... ]], hl_query)
exec_lua([[ hl_query = ... ]], hl_query_c)
command [[ hi link @error ErrorMsg ]]
command [[ hi link @warning WarningMsg ]]
end)
it('is updated with edits', function()
insert(hl_text)
insert(hl_text_c)
screen:expect{grid=[[
/// Schedule Lua callback on main loop's event queue |
static int nlua_schedule(lua_State *const lstate) |
@ -274,7 +274,7 @@ describe('treesitter highlighting', function()
end)
it('is updated with :sort', function()
insert(test_text)
insert(test_text_c)
exec_lua [[
local parser = vim.treesitter.get_parser(0, "c")
test_hl = vim.treesitter.highlighter.new(parser, {queries = {c = hl_query}})
@ -351,7 +351,7 @@ describe('treesitter highlighting', function()
[1] = {bold = true, foreground = Screen.colors.SeaGreen4};
}
insert(test_text)
insert(test_text_c)
screen:expect{ grid= [[
int width = INT_MAX, height = INT_MAX; |
@ -510,7 +510,7 @@ describe('treesitter highlighting', function()
end)
it("supports highlighting with custom highlight groups", function()
insert(hl_text)
insert(hl_text_c)
exec_lua [[
local parser = vim.treesitter.get_parser(0, "c")
@ -692,7 +692,7 @@ describe('treesitter highlighting', function()
end)
it("supports conceal attribute", function()
insert(hl_text)
insert(hl_text_c)
-- conceal can be empty or a single cchar.
exec_lua [=[
@ -753,3 +753,65 @@ describe('treesitter highlighting', function()
eq(nil, get_hl"@total.nonsense.but.a.lot.of.dots")
end)
end)
describe('treesitter highlighting (help)', function()
local screen
before_each(function()
screen = Screen.new(40, 6)
screen:attach()
screen:set_default_attr_ids {
[1] = {foreground = Screen.colors.Blue1};
[2] = {bold = true, foreground = Screen.colors.Blue1};
[3] = {bold = true, foreground = Screen.colors.Brown};
[4] = {foreground = Screen.colors.Cyan4};
[5] = {foreground = Screen.colors.Magenta1};
}
end)
it("correctly redraws added/removed injections", function()
insert[[
>ruby
-- comment
local this_is = 'actually_lua'
<
]]
exec_lua [[
vim.bo.filetype = 'help'
vim.treesitter.start()
]]
screen:expect{grid=[[
{1:>ruby} |
{1: -- comment} |
{1: local this_is = 'actually_lua'} |
< |
^ |
|
]]}
helpers.curbufmeths.set_text(0, 1, 0, 5, {'lua'})
screen:expect{grid=[[
{1:>lua} |
{1: -- comment} |
{1: }{3:local}{1: }{4:this_is}{1: }{3:=}{1: }{5:'actually_lua'} |
< |
^ |
|
]]}
helpers.curbufmeths.set_text(0, 1, 0, 4, {'ruby'})
screen:expect{grid=[[
{1:>ruby} |
{1: -- comment} |
{1: local this_is = 'actually_lua'} |
< |
^ |
|
]]}
end)
end)