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local gc = require 'gc'
local util = require 'utility'
local proto = require 'proto'
local await = require 'await'
local timer = require 'timer'
local pub = require 'pub'
local json = require 'json'
require 'provider'
local counter = util.counter()
---@class languageClient
---@field _outs table
---@field _gc gc
---@field _waiting table
---@field _methods table
---@field onSend function
local mt = {}
mt.__index = mt
function mt:__close()
self:remove()
end
function mt:_fakeProto()
proto.send = function (data)
self._outs[#self._outs+1] = data
if self.onSend then
self:onSend(data)
end
end
end
function mt:_flushServer()
-- reset scopes
local ws = require 'workspace'
local scope = require 'workspace.scope'
local files = require 'files'
ws.reset()
scope.reset()
files.reset()
end
function mt:_localLoadFile()
local awaitTask = pub.awaitTask
---@async
---@param name string
---@param params any
pub.awaitTask = function (name, params)
if name == 'loadFile' then
local path = params
return util.loadFile(path)
end
return awaitTask(name, params)
end
self:gc(function ()
pub.awaitTask = awaitTask
end)
end
---@async
function mt:initialize(params)
self:awaitRequest('initialize', params or {})
self:notify('initialized')
end
function mt:reportHangs()
local hangs = {}
hangs[#hangs+1] = ('====== C -> S ======')
for _, waiting in util.sortPairs(self._waiting) do
hangs[#hangs+1] = ('%03d %s'):format(waiting.id, waiting.method)
end
hangs[#hangs+1] = ('====== S -> C ======')
for _, waiting in util.sortPairs(proto.waiting) do
hangs[#hangs+1] = ('%03d %s'):format(waiting.id, waiting.method)
end
hangs[#hangs+1] = ('====================')
return table.concat(hangs, '\n')
end
---@param callback async fun(client: languageClient)
---@return languageClient
function mt:start(callback)
CLI = true
self:_fakeProto()
self:_flushServer()
self:_localLoadFile()
local finished = false
await.setErrorHandle(function (...)
local msg = log.error(...)
error(msg)
end)
---@async
await.call(function ()
callback(self)
finished = true
end)
local jumpedTime = 0
while true do
if finished and #self._outs == 0 then
break
end
timer.update()
if await.step() then
goto CONTINUE
end
if self:update() then
goto CONTINUE
end
timer.timeJump(1.0)
jumpedTime = jumpedTime + 1.0
if jumpedTime > 2 * 60 * 60 then
error('two hours later ...\n' .. self:reportHangs())
end
::CONTINUE::
end
self:remove()
CLI = false
end
function mt:gc(obj)
return self._gc:add(obj)
end
function mt:remove()
self._gc:remove()
end
function mt:notify(method, params)
proto.doMethod {
method = method,
params = params,
}
end
function mt:request(method, params, callback)
local id = counter()
self._waiting[id] = {
id = id,
params = params,
callback = callback,
}
proto.doMethod {
id = id,
method = method,
params = params,
}
end
---@async
function mt:awaitRequest(method, params)
return await.wait(function (waker)
self:request(method, params, function (result)
if result == json.null then
result = nil
end
waker(result)
end)
end)
end
function mt:update()
local outs = self._outs
if #outs == 0 then
return false
end
self._outs = {}
for _, out in ipairs(outs) do
if out.method then
local callback = self._methods[out.method]
if callback then
local result = callback(out.params)
await.call(function ()
if out.id then
proto.doResponse {
id = out.id,
result = result,
}
end
end)
elseif out.method:sub(1, 2) ~= '$/' then
error('Unknown method: ' .. out.method)
end
else
local callback = self._waiting[out.id].callback
self._waiting[out.id] = nil
callback(out.result, out.error)
end
end
return true
end
function mt:register(method, callback)
self._methods[method] = callback
end
function mt:registerFakers()
for _, method in ipairs {
'textDocument/publishDiagnostics',
'workspace/configuration',
'workspace/semanticTokens/refresh',
'workspace/diagnostic/refresh',
'window/workDoneProgress/create',
'window/showMessage',
'window/showMessageRequest',
'window/logMessage',
} do
self:register(method, function ()
return nil
end)
end
end
---@return languageClient
return function ()
local self = setmetatable({
_gc = gc(),
_outs = {},
_waiting = {},
_methods = {},
}, mt)
return self
end
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