mirror of
https://github.com/neovim/neovim.git
synced 2025-11-04 01:34:25 +00:00
650 lines
22 KiB
Lua
650 lines
22 KiB
Lua
local vim = vim
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local validate = vim.validate
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local vfn = vim.fn
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local util = require 'vim.lsp.util'
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local M = {}
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---@private
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--- Returns nil if {status} is false or nil, otherwise returns the rest of the
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--- arguments.
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local function ok_or_nil(status, ...)
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if not status then return end
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return ...
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end
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---@private
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--- Swallows errors.
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---
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---@param fn Function to run
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---@param ... Function arguments
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---@returns Result of `fn(...)` if there are no errors, otherwise nil.
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--- Returns nil if errors occur during {fn}, otherwise returns
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local function npcall(fn, ...)
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return ok_or_nil(pcall(fn, ...))
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end
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---@private
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--- Sends an async request to all active clients attached to the current
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--- buffer.
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---
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---@param method (string) LSP method name
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---@param params (optional, table) Parameters to send to the server
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---@param handler (optional, functionnil) See |lsp-handler|. Follows |lsp-handler-resolution|
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--
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---@returns 2-tuple:
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--- - Map of client-id:request-id pairs for all successful requests.
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--- - Function which can be used to cancel all the requests. You could instead
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--- iterate all clients and call their `cancel_request()` methods.
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---
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---@see |vim.lsp.buf_request()|
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local function request(method, params, handler)
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validate {
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method = {method, 's'};
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handler = {handler, 'f', true};
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}
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return vim.lsp.buf_request(0, method, params, handler)
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end
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--- Checks whether the language servers attached to the current buffer are
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--- ready.
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---
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---@returns `true` if server responds.
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function M.server_ready()
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return not not vim.lsp.buf_notify(0, "window/progress", {})
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end
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--- Displays hover information about the symbol under the cursor in a floating
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--- window. Calling the function twice will jump into the floating window.
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function M.hover()
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local params = util.make_position_params()
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request('textDocument/hover', params)
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end
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--- Jumps to the declaration of the symbol under the cursor.
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---@note Many servers do not implement this method. Generally, see |vim.lsp.buf.definition()| instead.
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---
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function M.declaration()
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local params = util.make_position_params()
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request('textDocument/declaration', params)
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end
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--- Jumps to the definition of the symbol under the cursor.
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---
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function M.definition()
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local params = util.make_position_params()
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request('textDocument/definition', params)
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end
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--- Jumps to the definition of the type of the symbol under the cursor.
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---
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function M.type_definition()
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local params = util.make_position_params()
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request('textDocument/typeDefinition', params)
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end
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--- Lists all the implementations for the symbol under the cursor in the
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--- quickfix window.
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function M.implementation()
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local params = util.make_position_params()
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request('textDocument/implementation', params)
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end
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--- Displays signature information about the symbol under the cursor in a
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--- floating window.
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function M.signature_help()
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local params = util.make_position_params()
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request('textDocument/signatureHelp', params)
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end
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--- Retrieves the completion items at the current cursor position. Can only be
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--- called in Insert mode.
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---
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---@param context (context support not yet implemented) Additional information
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--- about the context in which a completion was triggered (how it was triggered,
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--- and by which trigger character, if applicable)
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---
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---@see |vim.lsp.protocol.constants.CompletionTriggerKind|
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function M.completion(context)
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local params = util.make_position_params()
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params.context = context
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return request('textDocument/completion', params)
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end
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---@private
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--- If there is more than one client that supports the given method,
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--- asks the user to select one.
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--
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---@returns The client that the user selected or nil
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local function select_client(method, on_choice)
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validate {
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on_choice = { on_choice, 'function', false },
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}
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local clients = vim.tbl_values(vim.lsp.buf_get_clients())
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clients = vim.tbl_filter(function(client)
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return client.supports_method(method)
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end, clients)
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-- better UX when choices are always in the same order (between restarts)
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table.sort(clients, function(a, b)
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return a.name < b.name
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end)
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if #clients > 1 then
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vim.ui.select(clients, {
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prompt = 'Select a language server:',
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format_item = function(client)
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return client.name
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end,
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}, on_choice)
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elseif #clients < 1 then
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on_choice(nil)
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else
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on_choice(clients[1])
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end
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end
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--- Formats the current buffer.
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---
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---@param options (optional, table) Can be used to specify FormattingOptions.
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--- Some unspecified options will be automatically derived from the current
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--- Neovim options.
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--
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---@see https://microsoft.github.io/language-server-protocol/specification#textDocument_formatting
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function M.formatting(options)
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local params = util.make_formatting_params(options)
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local bufnr = vim.api.nvim_get_current_buf()
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select_client('textDocument/formatting', function(client)
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if client == nil then
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return
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end
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return client.request('textDocument/formatting', params, nil, bufnr)
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end)
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end
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--- Performs |vim.lsp.buf.formatting()| synchronously.
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---
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--- Useful for running on save, to make sure buffer is formatted prior to being
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--- saved. {timeout_ms} is passed on to |vim.lsp.buf_request_sync()|. Example:
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---
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--- <pre>
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--- autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_sync()
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--- </pre>
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---
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---@param options Table with valid `FormattingOptions` entries
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---@param timeout_ms (number) Request timeout
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---@see |vim.lsp.buf.formatting_seq_sync|
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function M.formatting_sync(options, timeout_ms)
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local params = util.make_formatting_params(options)
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local bufnr = vim.api.nvim_get_current_buf()
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select_client('textDocument/formatting', function(client)
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if client == nil then
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return
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end
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local result, err = client.request_sync('textDocument/formatting', params, timeout_ms, bufnr)
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if result and result.result then
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util.apply_text_edits(result.result, bufnr, client.offset_encoding)
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elseif err then
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vim.notify('vim.lsp.buf.formatting_sync: ' .. err, vim.log.levels.WARN)
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end
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end)
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end
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--- Formats the current buffer by sequentially requesting formatting from attached clients.
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---
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--- Useful when multiple clients with formatting capability are attached.
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---
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--- Since it's synchronous, can be used for running on save, to make sure buffer is formatted
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--- prior to being saved. {timeout_ms} is passed on to the |vim.lsp.client| `request_sync` method.
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--- Example:
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--- <pre>
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--- vim.api.nvim_command[[autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_seq_sync()]]
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--- </pre>
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---
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---@param options (optional, table) `FormattingOptions` entries
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---@param timeout_ms (optional, number) Request timeout
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---@param order (optional, table) List of client names. Formatting is requested from clients
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---in the following order: first all clients that are not in the `order` list, then
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---the remaining clients in the order as they occur in the `order` list.
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function M.formatting_seq_sync(options, timeout_ms, order)
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local clients = vim.tbl_values(vim.lsp.buf_get_clients());
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local bufnr = vim.api.nvim_get_current_buf()
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-- sort the clients according to `order`
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for _, client_name in pairs(order or {}) do
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-- if the client exists, move to the end of the list
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for i, client in pairs(clients) do
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if client.name == client_name then
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table.insert(clients, table.remove(clients, i))
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break
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end
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end
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end
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-- loop through the clients and make synchronous formatting requests
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for _, client in pairs(clients) do
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if client.resolved_capabilities.document_formatting then
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local params = util.make_formatting_params(options)
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local result, err = client.request_sync("textDocument/formatting", params, timeout_ms, vim.api.nvim_get_current_buf())
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if result and result.result then
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util.apply_text_edits(result.result, bufnr, client.offset_encoding)
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elseif err then
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vim.notify(string.format("vim.lsp.buf.formatting_seq_sync: (%s) %s", client.name, err), vim.log.levels.WARN)
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end
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end
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end
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end
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--- Formats a given range.
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---
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---@param options Table with valid `FormattingOptions` entries.
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---@param start_pos ({number, number}, optional) mark-indexed position.
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---Defaults to the start of the last visual selection.
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---@param end_pos ({number, number}, optional) mark-indexed position.
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---Defaults to the end of the last visual selection.
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function M.range_formatting(options, start_pos, end_pos)
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local params = util.make_given_range_params(start_pos, end_pos)
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params.options = util.make_formatting_params(options).options
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select_client('textDocument/rangeFormatting', function(client)
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if client == nil then
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return
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end
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return client.request('textDocument/rangeFormatting', params)
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end)
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end
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--- Renames all references to the symbol under the cursor.
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---
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---@param new_name (string) If not provided, the user will be prompted for a new
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---name using |vim.ui.input()|.
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function M.rename(new_name)
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local opts = {
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prompt = "New Name: "
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}
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---@private
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local function on_confirm(input)
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if not (input and #input > 0) then return end
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local params = util.make_position_params()
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params.newName = input
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request('textDocument/rename', params)
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end
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---@private
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local function prepare_rename(err, result)
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if err == nil and result == nil then
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vim.notify('nothing to rename', vim.log.levels.INFO)
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return
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end
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if result and result.placeholder then
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opts.default = result.placeholder
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if not new_name then npcall(vim.ui.input, opts, on_confirm) end
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elseif result and result.start and result['end'] and
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result.start.line == result['end'].line then
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local line = vfn.getline(result.start.line+1)
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local start_char = result.start.character+1
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local end_char = result['end'].character
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opts.default = string.sub(line, start_char, end_char)
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if not new_name then npcall(vim.ui.input, opts, on_confirm) end
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else
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-- fallback to guessing symbol using <cword>
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--
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-- this can happen if the language server does not support prepareRename,
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-- returns an unexpected response, or requests for "default behavior"
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--
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-- see https://microsoft.github.io/language-server-protocol/specification#textDocument_prepareRename
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opts.default = vfn.expand('<cword>')
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if not new_name then npcall(vim.ui.input, opts, on_confirm) end
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end
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if new_name then on_confirm(new_name) end
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end
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request('textDocument/prepareRename', util.make_position_params(), prepare_rename)
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end
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--- Lists all the references to the symbol under the cursor in the quickfix window.
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---
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---@param context (table) Context for the request
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---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_references
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function M.references(context)
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validate { context = { context, 't', true } }
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local params = util.make_position_params()
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params.context = context or {
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includeDeclaration = true;
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}
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request('textDocument/references', params)
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end
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--- Lists all symbols in the current buffer in the quickfix window.
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---
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function M.document_symbol()
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local params = { textDocument = util.make_text_document_params() }
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request('textDocument/documentSymbol', params)
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end
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---@private
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local function pick_call_hierarchy_item(call_hierarchy_items)
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if not call_hierarchy_items then return end
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if #call_hierarchy_items == 1 then
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return call_hierarchy_items[1]
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end
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local items = {}
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for i, item in pairs(call_hierarchy_items) do
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local entry = item.detail or item.name
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table.insert(items, string.format("%d. %s", i, entry))
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end
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local choice = vim.fn.inputlist(items)
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if choice < 1 or choice > #items then
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return
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end
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return choice
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end
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---@private
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local function call_hierarchy(method)
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local params = util.make_position_params()
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request('textDocument/prepareCallHierarchy', params, function(err, result, ctx)
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if err then
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vim.notify(err.message, vim.log.levels.WARN)
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return
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end
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local call_hierarchy_item = pick_call_hierarchy_item(result)
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local client = vim.lsp.get_client_by_id(ctx.client_id)
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if client then
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client.request(method, { item = call_hierarchy_item }, nil, ctx.bufnr)
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else
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vim.notify(string.format(
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'Client with id=%d disappeared during call hierarchy request', ctx.client_id),
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vim.log.levels.WARN
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)
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end
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end)
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end
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--- Lists all the call sites of the symbol under the cursor in the
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--- |quickfix| window. If the symbol can resolve to multiple
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--- items, the user can pick one in the |inputlist|.
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function M.incoming_calls()
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call_hierarchy('callHierarchy/incomingCalls')
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end
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--- Lists all the items that are called by the symbol under the
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--- cursor in the |quickfix| window. If the symbol can resolve to
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--- multiple items, the user can pick one in the |inputlist|.
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function M.outgoing_calls()
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call_hierarchy('callHierarchy/outgoingCalls')
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end
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--- List workspace folders.
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---
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function M.list_workspace_folders()
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local workspace_folders = {}
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for _, client in pairs(vim.lsp.buf_get_clients()) do
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for _, folder in pairs(client.workspace_folders or {}) do
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table.insert(workspace_folders, folder.name)
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end
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end
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return workspace_folders
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end
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--- Add the folder at path to the workspace folders. If {path} is
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--- not provided, the user will be prompted for a path using |input()|.
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function M.add_workspace_folder(workspace_folder)
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workspace_folder = workspace_folder or npcall(vfn.input, "Workspace Folder: ", vfn.expand('%:p:h'), 'dir')
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vim.api.nvim_command("redraw")
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if not (workspace_folder and #workspace_folder > 0) then return end
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if vim.fn.isdirectory(workspace_folder) == 0 then
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print(workspace_folder, " is not a valid directory")
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return
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end
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local params = util.make_workspace_params({{uri = vim.uri_from_fname(workspace_folder); name = workspace_folder}}, {{}})
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for _, client in pairs(vim.lsp.buf_get_clients()) do
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local found = false
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for _, folder in pairs(client.workspace_folders or {}) do
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if folder.name == workspace_folder then
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found = true
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print(workspace_folder, "is already part of this workspace")
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break
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end
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end
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if not found then
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vim.lsp.buf_notify(0, 'workspace/didChangeWorkspaceFolders', params)
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if not client.workspace_folders then
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client.workspace_folders = {}
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end
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table.insert(client.workspace_folders, params.event.added[1])
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end
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end
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end
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--- Remove the folder at path from the workspace folders. If
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--- {path} is not provided, the user will be prompted for
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--- a path using |input()|.
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function M.remove_workspace_folder(workspace_folder)
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workspace_folder = workspace_folder or npcall(vfn.input, "Workspace Folder: ", vfn.expand('%:p:h'))
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vim.api.nvim_command("redraw")
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if not (workspace_folder and #workspace_folder > 0) then return end
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local params = util.make_workspace_params({{}}, {{uri = vim.uri_from_fname(workspace_folder); name = workspace_folder}})
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for _, client in pairs(vim.lsp.buf_get_clients()) do
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for idx, folder in pairs(client.workspace_folders) do
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if folder.name == workspace_folder then
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vim.lsp.buf_notify(0, 'workspace/didChangeWorkspaceFolders', params)
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client.workspace_folders[idx] = nil
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return
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end
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end
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end
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print(workspace_folder, "is not currently part of the workspace")
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end
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--- Lists all symbols in the current workspace in the quickfix window.
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---
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--- The list is filtered against {query}; if the argument is omitted from the
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--- call, the user is prompted to enter a string on the command line. An empty
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--- string means no filtering is done.
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---
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---@param query (string, optional)
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function M.workspace_symbol(query)
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query = query or npcall(vfn.input, "Query: ")
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if query == nil then
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return
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end
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local params = {query = query}
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request('workspace/symbol', params)
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end
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--- Send request to the server to resolve document highlights for the current
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--- text document position. This request can be triggered by a key mapping or
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--- by events such as `CursorHold`, e.g.:
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---
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--- <pre>
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--- autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
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--- autocmd CursorHoldI <buffer> lua vim.lsp.buf.document_highlight()
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--- autocmd CursorMoved <buffer> lua vim.lsp.buf.clear_references()
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--- </pre>
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---
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--- Note: Usage of |vim.lsp.buf.document_highlight()| requires the following highlight groups
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--- to be defined or you won't be able to see the actual highlights.
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--- |LspReferenceText|
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--- |LspReferenceRead|
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--- |LspReferenceWrite|
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function M.document_highlight()
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local params = util.make_position_params()
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request('textDocument/documentHighlight', params)
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end
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--- Removes document highlights from current buffer.
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---
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function M.clear_references()
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util.buf_clear_references()
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end
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---@private
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--
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--- This is not public because the main extension point is
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--- vim.ui.select which can be overridden independently.
|
|
---
|
|
--- Can't call/use vim.lsp.handlers['textDocument/codeAction'] because it expects
|
|
--- `(err, CodeAction[] | Command[], ctx)`, but we want to aggregate the results
|
|
--- from multiple clients to have 1 single UI prompt for the user, yet we still
|
|
--- need to be able to link a `CodeAction|Command` to the right client for
|
|
--- `codeAction/resolve`
|
|
local function on_code_action_results(results, ctx)
|
|
local action_tuples = {}
|
|
for client_id, result in pairs(results) do
|
|
for _, action in pairs(result.result or {}) do
|
|
table.insert(action_tuples, { client_id, action })
|
|
end
|
|
end
|
|
if #action_tuples == 0 then
|
|
vim.notify('No code actions available', vim.log.levels.INFO)
|
|
return
|
|
end
|
|
|
|
---@private
|
|
local function apply_action(action, client)
|
|
if action.edit then
|
|
util.apply_workspace_edit(action.edit, client.offset_encoding)
|
|
end
|
|
if action.command then
|
|
local command = type(action.command) == 'table' and action.command or action
|
|
local fn = client.commands[command.command] or vim.lsp.commands[command.command]
|
|
if fn then
|
|
local enriched_ctx = vim.deepcopy(ctx)
|
|
enriched_ctx.client_id = client.id
|
|
fn(command, enriched_ctx)
|
|
else
|
|
M.execute_command(command)
|
|
end
|
|
end
|
|
end
|
|
|
|
---@private
|
|
local function on_user_choice(action_tuple)
|
|
if not action_tuple then
|
|
return
|
|
end
|
|
-- textDocument/codeAction can return either Command[] or CodeAction[]
|
|
--
|
|
-- CodeAction
|
|
-- ...
|
|
-- edit?: WorkspaceEdit -- <- must be applied before command
|
|
-- command?: Command
|
|
--
|
|
-- Command:
|
|
-- title: string
|
|
-- command: string
|
|
-- arguments?: any[]
|
|
--
|
|
local client = vim.lsp.get_client_by_id(action_tuple[1])
|
|
local action = action_tuple[2]
|
|
if not action.edit
|
|
and client
|
|
and type(client.resolved_capabilities.code_action) == 'table'
|
|
and client.resolved_capabilities.code_action.resolveProvider then
|
|
|
|
client.request('codeAction/resolve', action, function(err, resolved_action)
|
|
if err then
|
|
vim.notify(err.code .. ': ' .. err.message, vim.log.levels.ERROR)
|
|
return
|
|
end
|
|
apply_action(resolved_action, client)
|
|
end)
|
|
else
|
|
apply_action(action, client)
|
|
end
|
|
end
|
|
|
|
vim.ui.select(action_tuples, {
|
|
prompt = 'Code actions:',
|
|
kind = 'codeaction',
|
|
format_item = function(action_tuple)
|
|
local title = action_tuple[2].title:gsub('\r\n', '\\r\\n')
|
|
return title:gsub('\n', '\\n')
|
|
end,
|
|
}, on_user_choice)
|
|
end
|
|
|
|
|
|
--- Requests code actions from all clients and calls the handler exactly once
|
|
--- with all aggregated results
|
|
---@private
|
|
local function code_action_request(params)
|
|
local bufnr = vim.api.nvim_get_current_buf()
|
|
local method = 'textDocument/codeAction'
|
|
vim.lsp.buf_request_all(bufnr, method, params, function(results)
|
|
on_code_action_results(results, { bufnr = bufnr, method = method, params = params })
|
|
end)
|
|
end
|
|
|
|
--- Selects a code action available at the current
|
|
--- cursor position.
|
|
---
|
|
---@param context table|nil `CodeActionContext` of the LSP specification:
|
|
--- - diagnostics: (table|nil)
|
|
--- LSP `Diagnostic[]`. Inferred from the current
|
|
--- position if not provided.
|
|
--- - only: (string|nil)
|
|
--- LSP `CodeActionKind` used to filter the code actions.
|
|
--- Most language servers support values like `refactor`
|
|
--- or `quickfix`.
|
|
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_codeAction
|
|
function M.code_action(context)
|
|
validate { context = { context, 't', true } }
|
|
context = context or {}
|
|
if not context.diagnostics then
|
|
context.diagnostics = vim.lsp.diagnostic.get_line_diagnostics()
|
|
end
|
|
local params = util.make_range_params()
|
|
params.context = context
|
|
code_action_request(params)
|
|
end
|
|
|
|
--- Performs |vim.lsp.buf.code_action()| for a given range.
|
|
---
|
|
---
|
|
---@param context table|nil `CodeActionContext` of the LSP specification:
|
|
--- - diagnostics: (table|nil)
|
|
--- LSP `Diagnostic[]`. Inferred from the current
|
|
--- position if not provided.
|
|
--- - only: (string|nil)
|
|
--- LSP `CodeActionKind` used to filter the code actions.
|
|
--- Most language servers support values like `refactor`
|
|
--- or `quickfix`.
|
|
---@param start_pos ({number, number}, optional) mark-indexed position.
|
|
---Defaults to the start of the last visual selection.
|
|
---@param end_pos ({number, number}, optional) mark-indexed position.
|
|
---Defaults to the end of the last visual selection.
|
|
function M.range_code_action(context, start_pos, end_pos)
|
|
validate { context = { context, 't', true } }
|
|
context = context or {}
|
|
if not context.diagnostics then
|
|
context.diagnostics = vim.lsp.diagnostic.get_line_diagnostics()
|
|
end
|
|
local params = util.make_given_range_params(start_pos, end_pos)
|
|
params.context = context
|
|
code_action_request(params)
|
|
end
|
|
|
|
--- Executes an LSP server command.
|
|
---
|
|
---@param command_params table A valid `ExecuteCommandParams` object
|
|
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#workspace_executeCommand
|
|
function M.execute_command(command_params)
|
|
validate {
|
|
command = { command_params.command, 's' },
|
|
arguments = { command_params.arguments, 't', true }
|
|
}
|
|
command_params = {
|
|
command=command_params.command,
|
|
arguments=command_params.arguments,
|
|
workDoneToken=command_params.workDoneToken,
|
|
}
|
|
request('workspace/executeCommand', command_params )
|
|
end
|
|
|
|
return M
|
|
-- vim:sw=2 ts=2 et
|