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https://github.com/neovim/neovim.git
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8315697449
Problem: In cases when the (in-process) LSP server responds to the request immediately and calls `notify_reply_callback` the request will still be marked as pending, because the code assumes that the response will occur asynchronously. Then the request will be pending forever, because it was already set as "completed" before we even set it as "pending". A workaround is to wrap `notify_replay_callback` in `vim.shedule` ([like so](https://github.com/neovim/neovim/pull/24338#issuecomment-2809568617)] but that seems counterintuitive. Solution: Handle this case in Client:request().
1202 lines
41 KiB
Lua
1202 lines
41 KiB
Lua
local uv = vim.uv
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local api = vim.api
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local lsp = vim.lsp
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local log = lsp.log
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local ms = lsp.protocol.Methods
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local changetracking = lsp._changetracking
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local validate = vim.validate
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--- @alias vim.lsp.client.on_init_cb fun(client: vim.lsp.Client, init_result: lsp.InitializeResult)
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--- @alias vim.lsp.client.on_attach_cb fun(client: vim.lsp.Client, bufnr: integer)
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--- @alias vim.lsp.client.on_exit_cb fun(code: integer, signal: integer, client_id: integer)
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--- @alias vim.lsp.client.before_init_cb fun(params: lsp.InitializeParams, config: vim.lsp.ClientConfig)
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--- @class vim.lsp.Client.Flags
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--- @inlinedoc
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---
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--- Allow using incremental sync for buffer edits
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--- (default: `true`)
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--- @field allow_incremental_sync? boolean
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---
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--- Debounce `didChange` notifications to the server by the given number in milliseconds.
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--- No debounce occurs if `nil`.
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--- (default: `150`)
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--- @field debounce_text_changes integer
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---
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--- Milliseconds to wait for server to exit cleanly after sending the
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--- "shutdown" request before sending kill -15. If set to false, nvim exits
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--- immediately after sending the "shutdown" request to the server.
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--- (default: `false`)
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--- @field exit_timeout integer|false
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--- @class vim.lsp.ClientConfig
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--- command string[] that launches the language
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--- server (treated as in |jobstart()|, must be absolute or on `$PATH`, shell constructs like
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--- "~" are not expanded), or function that creates an RPC client. Function receives
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--- a `dispatchers` table and returns a table with member functions `request`, `notify`,
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--- `is_closing` and `terminate`.
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--- See |vim.lsp.rpc.request()|, |vim.lsp.rpc.notify()|.
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--- For TCP there is a builtin RPC client factory: |vim.lsp.rpc.connect()|
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--- @field cmd string[]|fun(dispatchers: vim.lsp.rpc.Dispatchers): vim.lsp.rpc.PublicClient
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---
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--- Directory to launch the `cmd` process. Not related to `root_dir`.
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--- (default: cwd)
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--- @field cmd_cwd? string
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---
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--- Environment flags to pass to the LSP on spawn.
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--- Must be specified using a table.
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--- Non-string values are coerced to string.
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--- Example:
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--- ```lua
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--- { PORT = 8080; HOST = "0.0.0.0"; }
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--- ```
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--- @field cmd_env? table
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---
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--- Daemonize the server process so that it runs in a separate process group from Nvim.
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--- Nvim will shutdown the process on exit, but if Nvim fails to exit cleanly this could leave
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--- behind orphaned server processes.
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--- (default: true)
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--- @field detached? boolean
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---
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--- List of workspace folders passed to the language server.
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--- For backwards compatibility rootUri and rootPath will be derived from the first workspace
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--- folder in this list. See `workspaceFolders` in the LSP spec.
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--- @field workspace_folders? lsp.WorkspaceFolder[]
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---
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--- (default false) Server requires a workspace (no "single file" support).
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--- @field workspace_required? boolean
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---
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--- Map overriding the default capabilities defined by |vim.lsp.protocol.make_client_capabilities()|,
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--- passed to the language server on initialization. Hint: use make_client_capabilities() and modify
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--- its result.
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--- - Note: To send an empty dictionary use |vim.empty_dict()|, else it will be encoded as an
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--- array.
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--- @field capabilities? lsp.ClientCapabilities
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---
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--- Map of language server method names to |lsp-handler|
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--- @field handlers? table<string,function>
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---
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--- Map with language server specific settings.
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--- See the {settings} in |vim.lsp.Client|.
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--- @field settings? lsp.LSPObject
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---
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--- Table that maps string of clientside commands to user-defined functions.
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--- Commands passed to `start()` take precedence over the global command registry. Each key
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--- must be a unique command name, and the value is a function which is called if any LSP action
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--- (code action, code lenses, ...) triggers the command.
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--- @field commands? table<string,fun(command: lsp.Command, ctx: table)>
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---
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--- Values to pass in the initialization request as `initializationOptions`. See `initialize` in
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--- the LSP spec.
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--- @field init_options? lsp.LSPObject
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---
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--- Name in log messages.
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--- (default: client-id)
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--- @field name? string
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---
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--- Language ID as string. Defaults to the buffer filetype.
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--- @field get_language_id? fun(bufnr: integer, filetype: string): string
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---
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--- Called "position encoding" in LSP spec, the encoding that the LSP server expects.
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--- Client does not verify this is correct.
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--- @field offset_encoding? 'utf-8'|'utf-16'|'utf-32'
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---
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--- Callback invoked when the client operation throws an error. `code` is a number describing the error.
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--- Other arguments may be passed depending on the error kind. See `vim.lsp.rpc.client_errors`
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--- for possible errors. Use `vim.lsp.rpc.client_errors[code]` to get human-friendly name.
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--- @field on_error? fun(code: integer, err: string)
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---
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--- Callback invoked before the LSP "initialize" phase, where `params` contains the parameters
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--- being sent to the server and `config` is the config that was passed to |vim.lsp.start()|.
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--- You can use this to modify parameters before they are sent.
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--- @field before_init? fun(params: lsp.InitializeParams, config: vim.lsp.ClientConfig)
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---
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--- Callback invoked after LSP "initialize", where `result` is a table of `capabilities` and
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--- anything else the server may send. For example, clangd sends `init_result.offsetEncoding` if
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--- `capabilities.offsetEncoding` was sent to it. You can only modify the `client.offset_encoding`
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--- here before any notifications are sent.
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--- @field on_init? elem_or_list<fun(client: vim.lsp.Client, init_result: lsp.InitializeResult)>
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---
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--- Callback invoked on client exit.
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--- - code: exit code of the process
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--- - signal: number describing the signal used to terminate (if any)
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--- - client_id: client handle
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--- @field on_exit? elem_or_list<fun(code: integer, signal: integer, client_id: integer)>
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---
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--- Callback invoked when client attaches to a buffer.
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--- @field on_attach? elem_or_list<fun(client: vim.lsp.Client, bufnr: integer)>
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---
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--- Passed directly to the language server in the initialize request. Invalid/empty values will
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--- (default: "off")
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--- @field trace? 'off'|'messages'|'verbose'
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---
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--- A table with flags for the client. The current (experimental) flags are:
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--- @field flags? vim.lsp.Client.Flags
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---
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--- Directory where the LSP server will base its workspaceFolders, rootUri, and rootPath on initialization.
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--- @field root_dir? string
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--- @class vim.lsp.Client.Progress: vim.Ringbuf<{token: integer|string, value: any}>
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--- @field pending table<lsp.ProgressToken,lsp.LSPAny>
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--- @class vim.lsp.Client
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---
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--- The id allocated to the client.
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--- @field id integer
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---
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--- If a name is specified on creation, that will be used. Otherwise it is just
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--- the client id. This is used for logs and messages.
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--- @field name string
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---
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--- RPC client object, for low level interaction with the client.
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--- See |vim.lsp.rpc.start()|.
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--- @field rpc vim.lsp.rpc.PublicClient
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---
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--- Called "position encoding" in LSP spec,
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--- the encoding used for communicating with the server.
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--- You can modify this in the `config`'s `on_init` method
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--- before text is sent to the server.
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--- @field offset_encoding string
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---
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--- The handlers used by the client as described in |lsp-handler|.
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--- @field handlers table<string,lsp.Handler>
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---
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--- The current pending requests in flight to the server. Entries are key-value
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--- pairs with the key being the request id while the value is a table with
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--- `type`, `bufnr`, and `method` key-value pairs. `type` is either "pending"
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--- for an active request, or "cancel" for a cancel request. It will be
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--- "complete" ephemerally while executing |LspRequest| autocmds when replies
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--- are received from the server.
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--- @field requests table<integer,{ type: string, bufnr: integer, method: string}?>
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---
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--- copy of the table that was passed by the user
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--- to |vim.lsp.start()|.
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--- @field config vim.lsp.ClientConfig
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---
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--- Response from the server sent on `initialize` describing the server's
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--- capabilities.
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--- @field server_capabilities lsp.ServerCapabilities?
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---
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--- Response from the server sent on `initialize` describing information about
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--- the server.
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--- @field server_info lsp.ServerInfo?
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---
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--- A ring buffer (|vim.ringbuf()|) containing progress messages
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--- sent by the server.
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--- @field progress vim.lsp.Client.Progress
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---
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--- @field initialized true?
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---
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--- The workspace folders configured in the client when the server starts.
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--- This property is only available if the client supports workspace folders.
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--- It can be `null` if the client supports workspace folders but none are
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--- configured.
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--- @field workspace_folders lsp.WorkspaceFolder[]?
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--- @field root_dir string?
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---
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--- @field attached_buffers table<integer,true>
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---
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--- @field private _log_prefix string
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---
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--- Track this so that we can escalate automatically if we've already tried a
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--- graceful shutdown
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--- @field private _graceful_shutdown_failed true?
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---
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--- The initial trace setting. If omitted trace is disabled ("off").
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--- trace = "off" | "messages" | "verbose";
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--- @field private _trace 'off'|'messages'|'verbose'
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---
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--- Table of command name to function which is called if any LSP action
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--- (code action, code lenses, ...) triggers the command.
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--- Client commands take precedence over the global command registry.
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--- @field commands table<string,fun(command: lsp.Command, ctx: table)>
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---
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--- Map with language server specific settings. These are returned to the
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--- language server if requested via `workspace/configuration`. Keys are
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--- case-sensitive.
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--- @field settings lsp.LSPObject
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---
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--- A table with flags for the client. The current (experimental) flags are:
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--- @field flags vim.lsp.Client.Flags
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---
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--- @field get_language_id fun(bufnr: integer, filetype: string): string
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---
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--- The capabilities provided by the client (editor or tool)
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--- @field capabilities lsp.ClientCapabilities
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--- @field private registrations table<string,lsp.Registration[]>
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--- @field dynamic_capabilities lsp.DynamicCapabilities
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---
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--- @field private _before_init_cb? vim.lsp.client.before_init_cb
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--- @field private _on_attach_cbs vim.lsp.client.on_attach_cb[]
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--- @field private _on_init_cbs vim.lsp.client.on_init_cb[]
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--- @field private _on_exit_cbs vim.lsp.client.on_exit_cb[]
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--- @field private _on_error_cb? fun(code: integer, err: string)
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local Client = {}
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Client.__index = Client
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--- @param obj table<string,any>
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--- @param cls table<string,function>
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--- @param name string
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local function method_wrapper(obj, cls, name)
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local meth = assert(cls[name])
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obj[name] = function(...)
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local arg = select(1, ...)
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if arg and getmetatable(arg) == cls then
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-- First argument is self, call meth directly
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return meth(...)
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end
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vim.deprecate('client.' .. name, 'client:' .. name, '0.13')
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-- First argument is not self, insert it
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return meth(obj, ...)
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end
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end
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local client_index = 0
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--- Checks whether a given path is a directory.
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--- @param filename (string) path to check
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--- @return boolean # true if {filename} exists and is a directory, false otherwise
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local function is_dir(filename)
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validate('filename', filename, 'string')
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local stat = uv.fs_stat(filename)
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return stat and stat.type == 'directory' or false
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end
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local valid_encodings = {
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['utf-8'] = 'utf-8',
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['utf-16'] = 'utf-16',
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['utf-32'] = 'utf-32',
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['utf8'] = 'utf-8',
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['utf16'] = 'utf-16',
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['utf32'] = 'utf-32',
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}
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--- Normalizes {encoding} to valid LSP encoding names.
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--- @param encoding string? Encoding to normalize
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--- @return string # normalized encoding name
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local function validate_encoding(encoding)
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validate('encoding', encoding, 'string', true)
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if not encoding then
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return valid_encodings.utf16
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end
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return valid_encodings[encoding:lower()]
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or error(
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string.format(
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"Invalid position encoding %q. Must be one of: 'utf-8', 'utf-16', 'utf-32'",
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encoding
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)
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)
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end
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--- Augments a validator function with support for optional (nil) values.
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--- @param fn (fun(v): boolean) The original validator function; should return a
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--- bool.
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--- @return fun(v): boolean # The augmented function. Also returns true if {v} is
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--- `nil`.
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local function optional_validator(fn)
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return function(v)
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return v == nil or fn(v)
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end
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end
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--- By default, get_language_id just returns the exact filetype it is passed.
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--- It is possible to pass in something that will calculate a different filetype,
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--- to be sent by the client.
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--- @param _bufnr integer
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--- @param filetype string
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local function default_get_language_id(_bufnr, filetype)
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return filetype
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end
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--- Validates a client configuration as given to |vim.lsp.start()|.
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--- @param config vim.lsp.ClientConfig
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local function validate_config(config)
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validate('config', config, 'table')
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validate('handlers', config.handlers, 'table', true)
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validate('capabilities', config.capabilities, 'table', true)
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validate('cmd_cwd', config.cmd_cwd, optional_validator(is_dir), 'directory')
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validate('cmd_env', config.cmd_env, 'table', true)
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validate('detached', config.detached, 'boolean', true)
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validate('name', config.name, 'string', true)
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validate('on_error', config.on_error, 'function', true)
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validate('on_exit', config.on_exit, { 'function', 'table' }, true)
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validate('on_init', config.on_init, { 'function', 'table' }, true)
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validate('on_attach', config.on_attach, { 'function', 'table' }, true)
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validate('settings', config.settings, 'table', true)
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validate('commands', config.commands, 'table', true)
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validate('before_init', config.before_init, { 'function', 'table' }, true)
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validate('offset_encoding', config.offset_encoding, 'string', true)
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validate('flags', config.flags, 'table', true)
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validate('get_language_id', config.get_language_id, 'function', true)
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assert(
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(
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not config.flags
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or not config.flags.debounce_text_changes
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or type(config.flags.debounce_text_changes) == 'number'
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),
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'flags.debounce_text_changes must be a number with the debounce time in milliseconds'
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)
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end
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--- @param trace string
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--- @return 'off'|'messages'|'verbose'
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local function get_trace(trace)
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local valid_traces = {
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off = 'off',
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messages = 'messages',
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verbose = 'verbose',
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}
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return trace and valid_traces[trace] or 'off'
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end
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--- @param id integer
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--- @param config vim.lsp.ClientConfig
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--- @return string
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local function get_name(id, config)
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local name = config.name
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if name then
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return name
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end
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if type(config.cmd) == 'table' and config.cmd[1] then
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return assert(vim.fs.basename(config.cmd[1]))
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end
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return tostring(id)
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end
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--- @nodoc
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--- @param config vim.lsp.ClientConfig
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--- @return vim.lsp.Client?
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function Client.create(config)
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validate_config(config)
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client_index = client_index + 1
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local id = client_index
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local name = get_name(id, config)
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--- @class vim.lsp.Client
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local self = {
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id = id,
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config = config,
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handlers = config.handlers or {},
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offset_encoding = validate_encoding(config.offset_encoding),
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name = name,
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_log_prefix = string.format('LSP[%s]', name),
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requests = {},
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attached_buffers = {},
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server_capabilities = {},
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registrations = {},
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commands = config.commands or {},
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settings = config.settings or {},
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flags = config.flags or {},
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get_language_id = config.get_language_id or default_get_language_id,
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capabilities = config.capabilities,
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workspace_folders = lsp._get_workspace_folders(config.workspace_folders or config.root_dir),
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root_dir = config.root_dir,
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_before_init_cb = config.before_init,
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_on_init_cbs = vim._ensure_list(config.on_init),
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_on_exit_cbs = vim._ensure_list(config.on_exit),
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_on_attach_cbs = vim._ensure_list(config.on_attach),
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_on_error_cb = config.on_error,
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_trace = get_trace(config.trace),
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--- Contains $/progress report messages.
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--- They have the format {token: integer|string, value: any}
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--- For "work done progress", value will be one of:
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--- - lsp.WorkDoneProgressBegin,
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--- - lsp.WorkDoneProgressReport (extended with title from Begin)
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--- - lsp.WorkDoneProgressEnd (extended with title from Begin)
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progress = vim.ringbuf(50) --[[@as vim.lsp.Client.Progress]],
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--- @deprecated use client.progress instead
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messages = { name = name, messages = {}, progress = {}, status = {} },
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}
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self.capabilities =
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vim.tbl_deep_extend('force', lsp.protocol.make_client_capabilities(), self.capabilities or {})
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--- @class lsp.DynamicCapabilities
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--- @nodoc
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self.dynamic_capabilities = {
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capabilities = self.registrations,
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client_id = id,
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register = function(_, registrations)
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return self:_register_dynamic(registrations)
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end,
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unregister = function(_, unregistrations)
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return self:_unregister_dynamic(unregistrations)
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end,
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get = function(_, method, opts)
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return self:_get_registration(method, opts and opts.bufnr)
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end,
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supports_registration = function(_, method)
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return self:_supports_registration(method)
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end,
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supports = function(_, method, opts)
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return self:_get_registration(method, opts and opts.bufnr) ~= nil
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|
end,
|
|
}
|
|
|
|
--- @type table<string|integer, string> title of unfinished progress sequences by token
|
|
self.progress.pending = {}
|
|
|
|
--- @type vim.lsp.rpc.Dispatchers
|
|
local dispatchers = {
|
|
notification = function(...)
|
|
return self:_notification(...)
|
|
end,
|
|
server_request = function(...)
|
|
return self:_server_request(...)
|
|
end,
|
|
on_error = function(...)
|
|
return self:_on_error(...)
|
|
end,
|
|
on_exit = function(...)
|
|
return self:_on_exit(...)
|
|
end,
|
|
}
|
|
|
|
-- Start the RPC client.
|
|
local config_cmd = config.cmd
|
|
if type(config_cmd) == 'function' then
|
|
self.rpc = config_cmd(dispatchers)
|
|
else
|
|
self.rpc = lsp.rpc.start(config_cmd, dispatchers, {
|
|
cwd = config.cmd_cwd,
|
|
env = config.cmd_env,
|
|
detached = config.detached,
|
|
})
|
|
end
|
|
|
|
setmetatable(self, Client)
|
|
|
|
method_wrapper(self, Client, 'request')
|
|
method_wrapper(self, Client, 'request_sync')
|
|
method_wrapper(self, Client, 'notify')
|
|
method_wrapper(self, Client, 'cancel_request')
|
|
method_wrapper(self, Client, 'stop')
|
|
method_wrapper(self, Client, 'is_stopped')
|
|
method_wrapper(self, Client, 'on_attach')
|
|
method_wrapper(self, Client, 'supports_method')
|
|
|
|
return self
|
|
end
|
|
|
|
--- @private
|
|
--- @param cbs function[]
|
|
--- @param error_id integer
|
|
--- @param ... any
|
|
function Client:_run_callbacks(cbs, error_id, ...)
|
|
for _, cb in pairs(cbs) do
|
|
--- @type boolean, string?
|
|
local status, err = pcall(cb, ...)
|
|
if not status then
|
|
self:write_error(error_id, err)
|
|
end
|
|
end
|
|
end
|
|
|
|
--- @nodoc
|
|
function Client:initialize()
|
|
local config = self.config
|
|
|
|
local root_uri --- @type string?
|
|
local root_path --- @type string?
|
|
if self.workspace_folders then
|
|
root_uri = self.workspace_folders[1].uri
|
|
root_path = vim.uri_to_fname(root_uri)
|
|
end
|
|
|
|
local init_params = {
|
|
-- The process Id of the parent process that started the server. Is null if
|
|
-- the process has not been started by another process. If the parent
|
|
-- process is not alive then the server should exit (see exit notification)
|
|
-- its process.
|
|
processId = uv.os_getpid(),
|
|
-- Information about the client
|
|
-- since 3.15.0
|
|
clientInfo = {
|
|
name = 'Neovim',
|
|
version = tostring(vim.version()),
|
|
},
|
|
-- The rootPath of the workspace. Is null if no folder is open.
|
|
--
|
|
-- @deprecated in favour of rootUri.
|
|
rootPath = root_path or vim.NIL,
|
|
-- The rootUri of the workspace. Is null if no folder is open. If both
|
|
-- `rootPath` and `rootUri` are set `rootUri` wins.
|
|
rootUri = root_uri or vim.NIL,
|
|
workspaceFolders = self.workspace_folders or vim.NIL,
|
|
-- User provided initialization options.
|
|
initializationOptions = config.init_options,
|
|
capabilities = self.capabilities,
|
|
trace = self._trace,
|
|
workDoneToken = '1',
|
|
}
|
|
|
|
self:_run_callbacks(
|
|
{ self._before_init_cb },
|
|
lsp.client_errors.BEFORE_INIT_CALLBACK_ERROR,
|
|
init_params,
|
|
config
|
|
)
|
|
|
|
log.trace(self._log_prefix, 'init_params', init_params)
|
|
|
|
local rpc = self.rpc
|
|
|
|
rpc.request('initialize', init_params, function(init_err, result)
|
|
assert(not init_err, tostring(init_err))
|
|
assert(result, 'server sent empty result')
|
|
rpc.notify('initialized', vim.empty_dict())
|
|
self.initialized = true
|
|
|
|
-- These are the cleaned up capabilities we use for dynamically deciding
|
|
-- when to send certain events to clients.
|
|
self.server_capabilities =
|
|
assert(result.capabilities, "initialize result doesn't contain capabilities")
|
|
self.server_capabilities = assert(lsp.protocol.resolve_capabilities(self.server_capabilities))
|
|
|
|
if self.server_capabilities.positionEncoding then
|
|
self.offset_encoding = self.server_capabilities.positionEncoding
|
|
end
|
|
|
|
self.server_info = result.serverInfo
|
|
|
|
if next(self.settings) then
|
|
self:notify(ms.workspace_didChangeConfiguration, { settings = self.settings })
|
|
end
|
|
|
|
-- If server is being restarted, make sure to re-attach to any previously attached buffers.
|
|
-- Save which buffers before on_init in case new buffers are attached.
|
|
local reattach_bufs = vim.deepcopy(self.attached_buffers)
|
|
|
|
self:_run_callbacks(self._on_init_cbs, lsp.client_errors.ON_INIT_CALLBACK_ERROR, self, result)
|
|
|
|
for buf in pairs(reattach_bufs) do
|
|
-- The buffer may have been detached in the on_init callback.
|
|
if self.attached_buffers[buf] then
|
|
self:on_attach(buf)
|
|
end
|
|
end
|
|
|
|
log.info(
|
|
self._log_prefix,
|
|
'server_capabilities',
|
|
{ server_capabilities = self.server_capabilities }
|
|
)
|
|
end)
|
|
end
|
|
|
|
--- @private
|
|
--- Returns the handler associated with an LSP method.
|
|
--- Returns the default handler if the user hasn't set a custom one.
|
|
---
|
|
--- @param method (string) LSP method name
|
|
--- @return lsp.Handler? handler for the given method, if defined, or the default from |vim.lsp.handlers|
|
|
function Client:_resolve_handler(method)
|
|
return self.handlers[method] or lsp.handlers[method]
|
|
end
|
|
|
|
--- @private
|
|
--- @param id integer
|
|
--- @param req_type 'pending'|'complete'|'cancel'|
|
|
--- @param bufnr? integer (only required for req_type='pending')
|
|
--- @param method? string (only required for req_type='pending')
|
|
function Client:_process_request(id, req_type, bufnr, method)
|
|
local pending = req_type == 'pending'
|
|
|
|
validate('id', id, 'number')
|
|
if pending then
|
|
validate('bufnr', bufnr, 'number')
|
|
validate('method', method, 'string')
|
|
end
|
|
|
|
local cur_request = self.requests[id]
|
|
|
|
if pending and cur_request then
|
|
log.error(
|
|
self._log_prefix,
|
|
('Cannot create request with id %d as one already exists'):format(id)
|
|
)
|
|
return
|
|
elseif not pending and not cur_request then
|
|
log.error(
|
|
self._log_prefix,
|
|
('Cannot find request with id %d whilst attempting to %s'):format(id, req_type)
|
|
)
|
|
return
|
|
end
|
|
|
|
if cur_request then
|
|
bufnr = cur_request.bufnr
|
|
method = cur_request.method
|
|
end
|
|
|
|
assert(bufnr and method)
|
|
|
|
local request = { type = req_type, bufnr = bufnr, method = method }
|
|
|
|
-- Clear 'complete' requests
|
|
-- Note 'pending' and 'cancelled' requests are cleared when the server sends a response
|
|
-- which is processed via the notify_reply_callback argument to rpc.request.
|
|
self.requests[id] = req_type ~= 'complete' and request or nil
|
|
|
|
api.nvim_exec_autocmds('LspRequest', {
|
|
buffer = api.nvim_buf_is_valid(bufnr) and bufnr or nil,
|
|
modeline = false,
|
|
data = { client_id = self.id, request_id = id, request = request },
|
|
})
|
|
end
|
|
|
|
--- Sends a request to the server.
|
|
---
|
|
--- This is a thin wrapper around {client.rpc.request} with some additional
|
|
--- checks for capabilities and handler availability.
|
|
---
|
|
--- @param method vim.lsp.protocol.Method.ClientToServer.Request LSP method name.
|
|
--- @param params? table LSP request params.
|
|
--- @param handler? lsp.Handler Response |lsp-handler| for this method.
|
|
--- @param bufnr? integer (default: 0) Buffer handle, or 0 for current.
|
|
--- @return boolean status indicates whether the request was successful.
|
|
--- If it is `false`, then it will always be `false` (the client has shutdown).
|
|
--- @return integer? request_id Can be used with |Client:cancel_request()|.
|
|
--- `nil` is request failed.
|
|
--- to cancel the-request.
|
|
--- @see |vim.lsp.buf_request_all()|
|
|
function Client:request(method, params, handler, bufnr)
|
|
if not handler then
|
|
handler = assert(
|
|
self:_resolve_handler(method),
|
|
string.format('not found: %q request handler for client %q.', method, self.name)
|
|
)
|
|
end
|
|
-- Ensure pending didChange notifications are sent so that the server doesn't operate on a stale state
|
|
changetracking.flush(self, bufnr)
|
|
bufnr = vim._resolve_bufnr(bufnr)
|
|
local version = lsp.util.buf_versions[bufnr]
|
|
log.debug(self._log_prefix, 'client.request', self.id, method, params, handler, bufnr)
|
|
|
|
-- Detect if request resolved synchronously (only possible with in-process servers).
|
|
local already_responded = false
|
|
local request_registered = false
|
|
|
|
-- NOTE: rpc.request might call an in-process (Lua) server, thus may be synchronous.
|
|
local success, request_id = self.rpc.request(method, params, function(err, result)
|
|
handler(err, result, {
|
|
method = method,
|
|
client_id = self.id,
|
|
bufnr = bufnr,
|
|
params = params,
|
|
version = version,
|
|
})
|
|
end, function(request_id)
|
|
-- Called when the server sends a response to the request (including cancelled acknowledgment).
|
|
if request_registered then
|
|
self:_process_request(request_id, 'complete')
|
|
end
|
|
already_responded = true
|
|
end)
|
|
|
|
if success and request_id and not already_responded then
|
|
self:_process_request(request_id, 'pending', bufnr, method)
|
|
request_registered = true
|
|
end
|
|
|
|
return success, request_id
|
|
end
|
|
|
|
-- TODO(lewis6991): duplicated from lsp.lua
|
|
local wait_result_reason = { [-1] = 'timeout', [-2] = 'interrupted', [-3] = 'error' }
|
|
|
|
--- Concatenates and writes a list of strings to the Vim error buffer.
|
|
---
|
|
--- @param ... string List to write to the buffer
|
|
local function err_message(...)
|
|
local chunks = { { table.concat(vim.iter({ ... }):flatten():totable()) } }
|
|
if vim.in_fast_event() then
|
|
vim.schedule(function()
|
|
api.nvim_echo(chunks, true, { err = true })
|
|
api.nvim_command('redraw')
|
|
end)
|
|
else
|
|
api.nvim_echo(chunks, true, { err = true })
|
|
api.nvim_command('redraw')
|
|
end
|
|
end
|
|
|
|
--- Sends a request to the server and synchronously waits for the response.
|
|
---
|
|
--- This is a wrapper around |Client:request()|
|
|
---
|
|
--- @param method vim.lsp.protocol.Method.ClientToServer.Request LSP method name.
|
|
--- @param params table LSP request params.
|
|
--- @param timeout_ms integer? Maximum time in milliseconds to wait for
|
|
--- a result. Defaults to 1000
|
|
--- @param bufnr? integer (default: 0) Buffer handle, or 0 for current.
|
|
--- @return {err: lsp.ResponseError?, result:any}? `result` and `err` from the |lsp-handler|.
|
|
--- `nil` is the request was unsuccessful
|
|
--- @return string? err On timeout, cancel or error, where `err` is a
|
|
--- string describing the failure reason.
|
|
--- @see |vim.lsp.buf_request_sync()|
|
|
function Client:request_sync(method, params, timeout_ms, bufnr)
|
|
local request_result = nil
|
|
local function _sync_handler(err, result)
|
|
request_result = { err = err, result = result }
|
|
end
|
|
|
|
local success, request_id = self:request(method, params, _sync_handler, bufnr)
|
|
if not success then
|
|
return nil
|
|
end
|
|
|
|
local wait_result, reason = vim.wait(timeout_ms or 1000, function()
|
|
return request_result ~= nil
|
|
end, 10)
|
|
|
|
if not wait_result then
|
|
if request_id then
|
|
self:cancel_request(request_id)
|
|
end
|
|
return nil, wait_result_reason[reason]
|
|
end
|
|
return request_result
|
|
end
|
|
|
|
--- Sends a notification to an LSP server.
|
|
---
|
|
--- @param method vim.lsp.protocol.Method.ClientToServer.Notification LSP method name.
|
|
--- @param params table? LSP request params.
|
|
--- @return boolean status indicating if the notification was successful.
|
|
--- If it is false, then the client has shutdown.
|
|
function Client:notify(method, params)
|
|
if method ~= ms.textDocument_didChange then
|
|
changetracking.flush(self)
|
|
end
|
|
|
|
local client_active = self.rpc.notify(method, params)
|
|
|
|
if client_active then
|
|
vim.schedule(function()
|
|
api.nvim_exec_autocmds('LspNotify', {
|
|
modeline = false,
|
|
data = {
|
|
client_id = self.id,
|
|
method = method,
|
|
params = params,
|
|
},
|
|
})
|
|
end)
|
|
end
|
|
|
|
return client_active
|
|
end
|
|
|
|
--- Cancels a request with a given request id.
|
|
---
|
|
--- @param id integer id of request to cancel
|
|
--- @return boolean status indicating if the notification was successful.
|
|
--- @see |Client:notify()|
|
|
function Client:cancel_request(id)
|
|
self:_process_request(id, 'cancel')
|
|
return self.rpc.notify(ms.dollar_cancelRequest, { id = id })
|
|
end
|
|
|
|
--- Stops a client, optionally with force.
|
|
---
|
|
--- By default, it will just request the server to shutdown without force. If
|
|
--- you request to stop a client which has previously been requested to
|
|
--- shutdown, it will automatically escalate and force shutdown.
|
|
---
|
|
--- @param force? boolean
|
|
function Client:stop(force)
|
|
local rpc = self.rpc
|
|
|
|
if rpc.is_closing() then
|
|
return
|
|
end
|
|
|
|
vim.lsp._watchfiles.cancel(self.id)
|
|
|
|
if force or not self.initialized or self._graceful_shutdown_failed then
|
|
rpc.terminate()
|
|
return
|
|
end
|
|
|
|
-- Sending a signal after a process has exited is acceptable.
|
|
rpc.request(ms.shutdown, nil, function(err, _)
|
|
if err == nil then
|
|
rpc.notify(ms.exit)
|
|
else
|
|
-- If there was an error in the shutdown request, then term to be safe.
|
|
rpc.terminate()
|
|
self._graceful_shutdown_failed = true
|
|
end
|
|
end)
|
|
end
|
|
|
|
--- Get options for a method that is registered dynamically.
|
|
--- @param method vim.lsp.protocol.Method
|
|
function Client:_supports_registration(method)
|
|
local capability = vim.tbl_get(self.capabilities, unpack(vim.split(method, '/')))
|
|
return type(capability) == 'table' and capability.dynamicRegistration
|
|
end
|
|
|
|
--- @private
|
|
--- @param registrations lsp.Registration[]
|
|
function Client:_register_dynamic(registrations)
|
|
-- remove duplicates
|
|
self:_unregister_dynamic(registrations)
|
|
for _, reg in ipairs(registrations) do
|
|
local method = reg.method
|
|
if not self.registrations[method] then
|
|
self.registrations[method] = {}
|
|
end
|
|
table.insert(self.registrations[method], reg)
|
|
end
|
|
end
|
|
|
|
--- @param registrations lsp.Registration[]
|
|
function Client:_register(registrations)
|
|
self:_register_dynamic(registrations)
|
|
|
|
local unsupported = {} --- @type string[]
|
|
|
|
for _, reg in ipairs(registrations) do
|
|
local method = reg.method
|
|
if method == ms.workspace_didChangeWatchedFiles then
|
|
vim.lsp._watchfiles.register(reg, self.id)
|
|
elseif not self:_supports_registration(method) then
|
|
unsupported[#unsupported + 1] = method
|
|
end
|
|
end
|
|
|
|
if #unsupported > 0 then
|
|
local warning_tpl = 'The language server %s triggers a registerCapability '
|
|
.. 'handler for %s despite dynamicRegistration set to false. '
|
|
.. 'Report upstream, this warning is harmless'
|
|
log.warn(string.format(warning_tpl, self.name, table.concat(unsupported, ', ')))
|
|
end
|
|
end
|
|
|
|
--- @private
|
|
--- @param unregistrations lsp.Unregistration[]
|
|
function Client:_unregister_dynamic(unregistrations)
|
|
for _, unreg in ipairs(unregistrations) do
|
|
local sreg = self.registrations[unreg.method]
|
|
-- Unegister dynamic capability
|
|
for i, reg in ipairs(sreg or {}) do
|
|
if reg.id == unreg.id then
|
|
table.remove(sreg, i)
|
|
break
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
--- @param unregistrations lsp.Unregistration[]
|
|
function Client:_unregister(unregistrations)
|
|
self:_unregister_dynamic(unregistrations)
|
|
for _, unreg in ipairs(unregistrations) do
|
|
if unreg.method == ms.workspace_didChangeWatchedFiles then
|
|
vim.lsp._watchfiles.unregister(unreg, self.id)
|
|
end
|
|
end
|
|
end
|
|
|
|
--- @private
|
|
function Client:_get_language_id(bufnr)
|
|
return self.get_language_id(bufnr, vim.bo[bufnr].filetype)
|
|
end
|
|
|
|
--- @param method vim.lsp.protocol.Method
|
|
--- @param bufnr? integer
|
|
--- @return lsp.Registration?
|
|
function Client:_get_registration(method, bufnr)
|
|
bufnr = vim._resolve_bufnr(bufnr)
|
|
for _, reg in ipairs(self.registrations[method] or {}) do
|
|
local regoptions = reg.registerOptions --[[@as {documentSelector:lsp.TextDocumentFilter[]}]]
|
|
if not regoptions or not regoptions.documentSelector then
|
|
return reg
|
|
end
|
|
local documentSelector = regoptions.documentSelector
|
|
local language = self:_get_language_id(bufnr)
|
|
local uri = vim.uri_from_bufnr(bufnr)
|
|
local fname = vim.uri_to_fname(uri)
|
|
for _, filter in ipairs(documentSelector) do
|
|
local flang, fscheme, fpat = filter.language, filter.scheme, filter.pattern
|
|
if
|
|
not (flang and language ~= flang)
|
|
and not (fscheme and not vim.startswith(uri, fscheme .. ':'))
|
|
and not (type(fpat) == 'string' and not vim.glob.to_lpeg(fpat):match(fname))
|
|
then
|
|
return reg
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
--- Checks whether a client is stopped.
|
|
---
|
|
--- @return boolean # true if client is stopped or in the process of being
|
|
--- stopped; false otherwise
|
|
function Client:is_stopped()
|
|
return self.rpc.is_closing()
|
|
end
|
|
|
|
--- Execute a lsp command, either via client command function (if available)
|
|
--- or via workspace/executeCommand (if supported by the server)
|
|
---
|
|
--- @param command lsp.Command
|
|
--- @param context? {bufnr?: integer}
|
|
--- @param handler? lsp.Handler only called if a server command
|
|
function Client:exec_cmd(command, context, handler)
|
|
context = vim.deepcopy(context or {}, true) --[[@as lsp.HandlerContext]]
|
|
context.bufnr = vim._resolve_bufnr(context.bufnr)
|
|
context.client_id = self.id
|
|
local cmdname = command.command
|
|
local fn = self.commands[cmdname] or lsp.commands[cmdname]
|
|
if fn then
|
|
fn(command, context)
|
|
return
|
|
end
|
|
|
|
local command_provider = self.server_capabilities.executeCommandProvider
|
|
local commands = type(command_provider) == 'table' and command_provider.commands or {}
|
|
|
|
if not vim.list_contains(commands, cmdname) then
|
|
vim.notify_once(
|
|
string.format(
|
|
'Language server `%s` does not support command `%s`. This command may require a client extension.',
|
|
self.name,
|
|
cmdname
|
|
),
|
|
vim.log.levels.WARN
|
|
)
|
|
return
|
|
end
|
|
-- Not using command directly to exclude extra properties,
|
|
-- see https://github.com/python-lsp/python-lsp-server/issues/146
|
|
--- @type lsp.ExecuteCommandParams
|
|
local params = {
|
|
command = cmdname,
|
|
arguments = command.arguments,
|
|
}
|
|
self:request(ms.workspace_executeCommand, params, handler, context.bufnr)
|
|
end
|
|
|
|
--- Default handler for the 'textDocument/didOpen' LSP notification.
|
|
---
|
|
--- @param bufnr integer Number of the buffer, or 0 for current
|
|
function Client:_text_document_did_open_handler(bufnr)
|
|
changetracking.init(self, bufnr)
|
|
if not self:supports_method(ms.textDocument_didOpen) then
|
|
return
|
|
end
|
|
if not api.nvim_buf_is_loaded(bufnr) then
|
|
return
|
|
end
|
|
|
|
self:notify(ms.textDocument_didOpen, {
|
|
textDocument = {
|
|
version = lsp.util.buf_versions[bufnr],
|
|
uri = vim.uri_from_bufnr(bufnr),
|
|
languageId = self:_get_language_id(bufnr),
|
|
text = lsp._buf_get_full_text(bufnr),
|
|
},
|
|
})
|
|
|
|
-- Next chance we get, we should re-do the diagnostics
|
|
vim.schedule(function()
|
|
-- Protect against a race where the buffer disappears
|
|
-- between `did_open_handler` and the scheduled function firing.
|
|
if api.nvim_buf_is_valid(bufnr) then
|
|
local namespace = lsp.diagnostic.get_namespace(self.id)
|
|
vim.diagnostic.show(namespace, bufnr)
|
|
end
|
|
end)
|
|
end
|
|
|
|
--- Runs the on_attach function from the client's config if it was defined.
|
|
--- Useful for buffer-local setup.
|
|
--- @param bufnr integer Buffer number
|
|
function Client:on_attach(bufnr)
|
|
self:_text_document_did_open_handler(bufnr)
|
|
|
|
lsp._set_defaults(self, bufnr)
|
|
|
|
api.nvim_exec_autocmds('LspAttach', {
|
|
buffer = bufnr,
|
|
modeline = false,
|
|
data = { client_id = self.id },
|
|
})
|
|
|
|
self:_run_callbacks(self._on_attach_cbs, lsp.client_errors.ON_ATTACH_ERROR, self, bufnr)
|
|
|
|
-- schedule the initialization of semantic tokens to give the above
|
|
-- on_attach and LspAttach callbacks the ability to schedule wrap the
|
|
-- opt-out (deleting the semanticTokensProvider from capabilities)
|
|
vim.schedule(function()
|
|
if vim.tbl_get(self.server_capabilities, 'semanticTokensProvider', 'full') then
|
|
lsp.semantic_tokens.start(bufnr, self.id)
|
|
end
|
|
end)
|
|
|
|
self.attached_buffers[bufnr] = true
|
|
end
|
|
|
|
--- @private
|
|
--- Logs the given error to the LSP log and to the error buffer.
|
|
--- @param code integer Error code
|
|
--- @param err any Error arguments
|
|
function Client:write_error(code, err)
|
|
local client_error = lsp.client_errors[code] --- @type string|integer
|
|
log.error(self._log_prefix, 'on_error', { code = client_error, err = err })
|
|
err_message(self._log_prefix, ': Error ', client_error, ': ', vim.inspect(err))
|
|
end
|
|
|
|
--- Checks if a client supports a given method.
|
|
--- Always returns true for unknown off-spec methods.
|
|
---
|
|
--- Note: Some language server capabilities can be file specific.
|
|
--- @param method vim.lsp.protocol.Method.ClientToServer
|
|
--- @param bufnr? integer
|
|
function Client:supports_method(method, bufnr)
|
|
-- Deprecated form
|
|
if type(bufnr) == 'table' then
|
|
--- @diagnostic disable-next-line:no-unknown
|
|
bufnr = bufnr.bufnr
|
|
end
|
|
local required_capability = lsp.protocol._request_name_to_capability[method]
|
|
-- if we don't know about the method, assume that the client supports it.
|
|
if not required_capability then
|
|
return true
|
|
end
|
|
if vim.tbl_get(self.server_capabilities, unpack(required_capability)) then
|
|
return true
|
|
end
|
|
|
|
local rmethod = lsp._resolve_to_request[method]
|
|
if rmethod then
|
|
if self:_supports_registration(rmethod) then
|
|
local reg = self:_get_registration(rmethod, bufnr)
|
|
return vim.tbl_get(reg or {}, 'registerOptions', 'resolveProvider') or false
|
|
end
|
|
else
|
|
if self:_supports_registration(method) then
|
|
return self:_get_registration(method, bufnr) ~= nil
|
|
end
|
|
end
|
|
return false
|
|
end
|
|
|
|
--- @private
|
|
--- Handles a notification sent by an LSP server by invoking the
|
|
--- corresponding handler.
|
|
---
|
|
--- @param method vim.lsp.protocol.Method.ServerToClient.Notification LSP method name
|
|
--- @param params table The parameters for that method.
|
|
function Client:_notification(method, params)
|
|
log.trace('notification', method, params)
|
|
local handler = self:_resolve_handler(method)
|
|
if handler then
|
|
-- Method name is provided here for convenience.
|
|
handler(nil, params, { method = method, client_id = self.id })
|
|
end
|
|
end
|
|
|
|
--- @private
|
|
--- Handles a request from an LSP server by invoking the corresponding handler.
|
|
---
|
|
--- @param method (vim.lsp.protocol.Method.ServerToClient) LSP method name
|
|
--- @param params (table) The parameters for that method
|
|
--- @return any result
|
|
--- @return lsp.ResponseError error code and message set in case an exception happens during the request.
|
|
function Client:_server_request(method, params)
|
|
log.trace('server_request', method, params)
|
|
local handler = self:_resolve_handler(method)
|
|
if handler then
|
|
log.trace('server_request: found handler for', method)
|
|
return handler(nil, params, { method = method, client_id = self.id })
|
|
end
|
|
log.warn('server_request: no handler found for', method)
|
|
return nil, lsp.rpc_response_error(lsp.protocol.ErrorCodes.MethodNotFound)
|
|
end
|
|
|
|
--- @private
|
|
--- Invoked when the client operation throws an error.
|
|
---
|
|
--- @param code integer Error code
|
|
--- @param err any Other arguments may be passed depending on the error kind
|
|
--- @see vim.lsp.rpc.client_errors for possible errors. Use
|
|
--- `vim.lsp.rpc.client_errors[code]` to get a human-friendly name.
|
|
function Client:_on_error(code, err)
|
|
self:write_error(code, err)
|
|
if self._on_error_cb then
|
|
--- @type boolean, string
|
|
local status, usererr = pcall(self._on_error_cb, code, err)
|
|
if not status then
|
|
log.error(self._log_prefix, 'user on_error failed', { err = usererr })
|
|
err_message(self._log_prefix, ' user on_error failed: ', tostring(usererr))
|
|
end
|
|
end
|
|
end
|
|
|
|
--- @private
|
|
--- Invoked on client exit.
|
|
---
|
|
--- @param code integer) exit code of the process
|
|
--- @param signal integer the signal used to terminate (if any)
|
|
function Client:_on_exit(code, signal)
|
|
self:_run_callbacks(
|
|
self._on_exit_cbs,
|
|
lsp.client_errors.ON_EXIT_CALLBACK_ERROR,
|
|
code,
|
|
signal,
|
|
self.id
|
|
)
|
|
end
|
|
|
|
--- Add a directory to the workspace folders.
|
|
--- @param dir string?
|
|
function Client:_add_workspace_folder(dir)
|
|
for _, folder in pairs(self.workspace_folders or {}) do
|
|
if folder.name == dir then
|
|
print(dir, 'is already part of this workspace')
|
|
return
|
|
end
|
|
end
|
|
|
|
local wf = assert(lsp._get_workspace_folders(dir))
|
|
|
|
self:notify(ms.workspace_didChangeWorkspaceFolders, {
|
|
event = { added = wf, removed = {} },
|
|
})
|
|
|
|
if not self.workspace_folders then
|
|
self.workspace_folders = {}
|
|
end
|
|
vim.list_extend(self.workspace_folders, wf)
|
|
end
|
|
|
|
--- Remove a directory to the workspace folders.
|
|
--- @param dir string?
|
|
function Client:_remove_workspace_folder(dir)
|
|
local wf = assert(lsp._get_workspace_folders(dir))
|
|
|
|
self:notify(ms.workspace_didChangeWorkspaceFolders, {
|
|
event = { added = {}, removed = wf },
|
|
})
|
|
|
|
for idx, folder in pairs(self.workspace_folders) do
|
|
if folder.name == dir then
|
|
table.remove(self.workspace_folders, idx)
|
|
break
|
|
end
|
|
end
|
|
end
|
|
|
|
return Client
|