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highlighter: autostop co-routine when not needed (#881) 

* highlighter: autostop co-routine when not needed

* applied @Guldoman suggestions
This commit is contained in:
Jefferson González 2022-11-05 22:38:10 -04:00 committed by GitHub
parent 56e465c351
commit 9c7304f555
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 36 additions and 29 deletions
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65
data/core/doc/highlighter.lua
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@ -10,42 +10,49 @@ local Highlighter = Object:extend()
function Highlighter:new(doc)
self.doc = doc
self.running = false
self:reset()
end
-- init incremental syntax highlighting
-- init incremental syntax highlighting
function Highlighter:start()
if self.running then return end
self.running = true
core.add_thread(function()
while true do
if self.first_invalid_line > self.max_wanted_line then
self.max_wanted_line = 0
coroutine.yield(1 / config.fps)
else
local max = math.min(self.first_invalid_line + 40, self.max_wanted_line)
local retokenized_from
for i = self.first_invalid_line, max do
local state = (i > 1) and self.lines[i - 1].state
local line = self.lines[i]
if not (line and line.init_state == state and line.text == self.doc.lines[i]) then
retokenized_from = retokenized_from or i
self.lines[i] = self:tokenize_line(i, state)
elseif retokenized_from then
self:update_notify(retokenized_from, i - retokenized_from - 1)
retokenized_from = nil
end
while self.first_invalid_line < self.max_wanted_line do
local max = math.min(self.first_invalid_line + 40, self.max_wanted_line)
local retokenized_from
for i = self.first_invalid_line, max do
local state = (i > 1) and self.lines[i - 1].state
local line = self.lines[i]
if not (line and line.init_state == state and line.text == self.doc.lines[i]) then
retokenized_from = retokenized_from or i
self.lines[i] = self:tokenize_line(i, state)
elseif retokenized_from then
self:update_notify(retokenized_from, i - retokenized_from - 1)
retokenized_from = nil
end
if retokenized_from then
self:update_notify(retokenized_from, max - retokenized_from)
end
self.first_invalid_line = max + 1
core.redraw = true
coroutine.yield()
end
if retokenized_from then
self:update_notify(retokenized_from, max - retokenized_from)
end
self.first_invalid_line = max + 1
core.redraw = true
coroutine.yield()
end
self.max_wanted_line = 0
self.running = false
end, self)
end
local function set_max_wanted_lines(self, amount)
self.max_wanted_line = amount
if self.first_invalid_line < self.max_wanted_line then
self:start()
end
end
function Highlighter:reset()
self.lines = {}
@ -62,7 +69,7 @@ end
function Highlighter:invalidate(idx)
self.first_invalid_line = math.min(self.first_invalid_line, idx)
self.max_wanted_line = math.min(self.max_wanted_line, #self.doc.lines)
set_max_wanted_lines(self, math.min(self.max_wanted_line, #self.doc.lines))
end
function Highlighter:insert_notify(line, n)
@ -101,7 +108,7 @@ function Highlighter:get_line(idx)
self.lines[idx] = line
self:update_notify(idx, 0)
end
self.max_wanted_line = math.max(self.max_wanted_line, idx)
set_max_wanted_lines(self, math.max(self.max_wanted_line, idx))
return line
end