mirror of
https://github.com/SpaceVim/SpaceVim.git
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118 lines
3.4 KiB
Lua
118 lines
3.4 KiB
Lua
---@diagnostic disable: invisible
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local mpack = require('mpack')
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local Async = require('cmp_dictionary.kit.Async')
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---Encode data to msgpack.
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---@param v any
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---@return string
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local function encode(v)
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if v == nil then
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return mpack.encode(mpack.NIL)
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end
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return mpack.encode(v)
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end
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---@class cmp_dictionary.kit.Thread.Server.Session
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---@field private mpack_session any
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---@field private reader uv.uv_pipe_t
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---@field private writer uv.uv_pipe_t
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---@field private _on_request table<string, fun(params: table): any>
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---@field private _on_notification table<string, fun(params: table): nil>
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local Session = {}
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Session.__index = Session
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---Create new session.
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---@return cmp_dictionary.kit.Thread.Server.Session
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function Session.new()
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local self = setmetatable({}, Session)
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self.mpack_session = mpack.Session({ unpack = mpack.Unpacker() })
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self.reader = nil
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self.writer = nil
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self._on_request = {}
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self._on_notification = {}
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return self
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end
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---Connect reader/writer.
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---@param reader uv.uv_pipe_t
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---@param writer uv.uv_pipe_t
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function Session:connect(reader, writer)
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self.reader = reader
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self.writer = writer
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self.reader:read_start(function(err, data)
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if err then
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error(err)
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end
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local offset = 1
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local length = #data
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while offset <= length do
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local type, id_or_cb, method_or_error, params_or_result, new_offset = self.mpack_session:receive(data, offset)
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if type == 'request' then
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local request_id, method, params = id_or_cb, method_or_error, params_or_result
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Async.resolve():next(function()
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return Async.run(function()
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return self._on_request[method](params)
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end)
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end):next(function(res)
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self.writer:write(self.mpack_session:reply(request_id) .. encode(mpack.NIL) .. encode(res))
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end):catch(function(err_)
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self.writer:write(self.mpack_session:reply(request_id) .. encode(err_) .. encode(mpack.NIL))
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end)
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elseif type == 'notification' then
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local method, params = method_or_error, params_or_result
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self._on_notification[method](params)
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elseif type == 'response' then
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local callback, err_, res = id_or_cb, method_or_error, params_or_result
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if err_ == mpack.NIL then
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callback(nil, res)
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else
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callback(err_, nil)
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end
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end
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offset = new_offset
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end
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end)
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end
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---Add request handler.
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---@param method string
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---@param callback fun(params: table): any
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function Session:on_request(method, callback)
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self._on_request[method] = callback
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end
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---Add notification handler.
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---@param method string
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---@param callback fun(params: table)
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function Session:on_notification(method, callback)
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self._on_notification[method] = callback
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end
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---Send request to the peer.
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---@param method string
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---@param params table
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---@return cmp_dictionary.kit.Async.AsyncTask
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function Session:request(method, params)
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return Async.new(function(resolve, reject)
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local request = self.mpack_session:request(function(err, res)
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if err then
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reject(err)
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else
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resolve(res)
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end
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end)
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self.writer:write(request .. encode(method) .. encode(params))
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end)
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end
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---Send notification to the peer.
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---@param method string
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---@param params table
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function Session:notify(method, params)
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self.writer:write(self.mpack_session:notify() .. encode(method) .. encode(params))
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end
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return Session
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