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lsp(start_client): Allow passing custom workspaceFolders to the LSP (#15132)

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Some language servers *cough*rust-analyzer*cough* need an empty/custom
workspaceFolders for certain usecases. For example, rust-analyzer
needs an empty workspaceFolders table for standalone file support
(See https://github.com/rust-analyzer/rust-analyzer/pull/8955).

This can also be useful for other languages that need to commonly
open a certain directory (like flutter or lua), which would help
prevent spinning up a new language server altogether.

In case no workspaceFolders are passed, we fallback to what we had
before.
This commit is contained in:
sim
2021-07-20 13:00:38 -07:00
committed by Justin M. Keyes
parent 959cf5e53c
commit 8ec5bc9126
1 changed files with 13 additions and 4 deletions
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17
runtime/lua/vim/lsp.lua
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@ -590,6 +590,10 @@ end
--- as `initializationOptions`. See `initialize` in the LSP spec.
---
--@param name (string, default=client-id) Name in log messages.
--
--@param workspace_folders (table) List of workspace folders passed to the
--- language server. Defaults to root_dir if not set. See `workspaceFolders` in
--- the LSP spec
---
--@param get_language_id function(bufnr, filetype) -> language ID as string.
--- Defaults to the filetype.
@ -775,6 +779,14 @@ function lsp.start_client(config)
off = 'off'; messages = 'messages'; verbose = 'verbose';
}
local version = vim.version()
if not config.workspace_folders then
config.workspace_folders = {{
uri = vim.uri_from_fname(config.root_dir);
name = string.format("%s", config.root_dir);
}};
end
local initialize_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
@ -815,10 +827,7 @@ function lsp.start_client(config)
-- -- workspace folder in the user interface.
-- name
-- }
workspaceFolders = {{
uri = vim.uri_from_fname(config.root_dir);
name = string.format("%s", config.root_dir);
}};
workspaceFolders = config.workspace_folders,
}
if config.before_init then
-- TODO(ashkan) handle errors here.