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local gc = require 'gc'
local util = require 'utility'
local proto = require 'proto'
local await = require 'await'
local timer = require 'timer'
require 'provider'
local counter = util.counter()
---@class languageClient
---@field _outs table
---@field _gc gc
---@field _waiting table
---@field _methods table
local mt = {}
mt.__index = mt
function mt:__close()
self:remove()
end
function mt:_fakeProto()
proto.send = function (data)
self._outs[#self._outs+1] = data
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
---@param callback async fun(client: languageClient)
function mt:start(callback)
self:_fakeProto()
self:_flushServer()
local finished = false
---@async
await.call(function ()
callback(self)
finished = true
end)
local jumpedTime = 0
while true do
if finished then
break
end
if await.step() then
goto CONTINUE
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 ...')
end
::CONTINUE::
end
self:remove()
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] = 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, waker)
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
proto.doResponse {
id = out.id,
params = callback(out.params),
}
elseif out.method:sub(1, 2) ~= '$/' then
error('Unknown method: ' .. out.method)
end
else
local callback = self._waiting[out.id]
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 {
'workspace/configuration',
'textDocument/publishDiagnostics',
} 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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