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local Optional = require "mason-core.optional"
local _ = require "mason-core.functional"
local a = require "mason-core.async"
local notify = require "mason-lspconfig.notify"
local registry = require "mason-registry"
---@async
---@param user_args string[]: The arguments, as provided by the user.
local function parse_packages_from_user_args(user_args)
local Package = require "mason-core.package"
local mappings = require "mason-lspconfig.mappings"
local server_mapping = mappings.get_mason_map()
local filetype_map = mappings.get_filetype_map()
return _.filter_map(function(server_specifier)
local server_name, version = Package.Parse(server_specifier)
return Optional
-- 1. first see if the provided arg is an actual lspconfig server name
.of_nilable(server_mapping.lspconfig_to_package[server_name])
-- 2. if not, check if it's a language specifier (e.g., "typescript" or "java")
:or_(function()
return Optional
.of_nilable(filetype_map[server_name])
:if_not_present(function()
notify(("Could not find LSP server %q."):format(server_name), vim.log.levels.ERROR)
end)
-- Remove server configurations that aren't available for installation via Mason
:map(
_.filter_map(function(server_name)
return Optional.of_nilable(server_mapping.lspconfig_to_package[server_name])
end)
)
:map(function(package_names)
if #package_names == 0 then
return nil
end
return a.promisify(vim.ui.select)(package_names, {
prompt = ("Please select which server you want to install for language %q:"):format(
server_name
),
format_item = function(package_name)
local lspconfig_name = server_mapping.package_to_lspconfig[package_name]
if registry.is_installed(package_name) then
return ("%s (installed)"):format(lspconfig_name)
else
return lspconfig_name
end
end,
})
end)
end)
:map(function(package_name)
return { package = package_name, version = version }
end)
end, user_args)
end
---@async
local function parse_packages_from_heuristics()
local mappings = require "mason-lspconfig.mappings"
local server_mapping = mappings.get_mason_map()
local filetype_mapping = mappings.get_filetype_map()
-- Prompt user which server they want to install (based on the current filetype)
local current_ft = vim.api.nvim_buf_get_option(vim.api.nvim_get_current_buf(), "filetype")
local server_names = filetype_mapping[current_ft] or {}
if #server_names == 0 then
notify(("No LSP servers found for filetype %q."):format(current_ft), vim.log.levels.ERROR)
return {}
end
local server_name = a.promisify(vim.ui.select)(server_names, {
prompt = ("Please select which server you want to install for filetype %q:"):format(current_ft),
format_item = function(server_name)
if registry.is_installed(server_mapping.lspconfig_to_package[server_name]) then
return ("%s (installed)"):format(server_name)
else
return server_name
end
end,
})
if server_name == nil then
return {}
end
local package_name = server_mapping.lspconfig_to_package[server_name]
return { { package = package_name, version = nil } }
end
local parse_packages_to_install = _.cond {
{ _.compose(_.gt(0), _.length), parse_packages_from_user_args },
{ _.compose(_.equals(0), _.length), parse_packages_from_heuristics },
{ _.T, _.always {} },
}
local LspInstall = a.scope(function(servers)
a.wait(registry.refresh)
local packages_to_install = parse_packages_to_install(servers)
if #packages_to_install > 0 then
require("mason.api.command").MasonInstall(_.map(function(target)
if target.version then
return ("%s@%s"):format(target.package, target.version)
else
return target.package
end
end, packages_to_install))
local ui = require "mason.ui"
ui.set_view "LSP"
end
end)
vim.api.nvim_create_user_command("LspInstall", function(opts)
LspInstall(opts.fargs)
end, {
desc = "Install one or more LSP servers.",
nargs = "*",
complete = "custom,v:lua.mason_lspconfig_completion.available_server_completion",
})
local function LspUninstall(servers)
local server_mapping = require("mason-lspconfig.mappings").get_mason_map()
require("mason.api.command").MasonUninstall(_.map(function(lspconfig_name)
return server_mapping.lspconfig_to_package[lspconfig_name] or lspconfig_name
end, servers))
require("mason.ui").set_view "LSP"
end
vim.api.nvim_create_user_command("LspUninstall", function(opts)
LspUninstall(opts.fargs)
end, {
desc = "Uninstall one or more LSP servers.",
nargs = "+",
complete = "custom,v:lua.mason_lspconfig_completion.installed_server_completion",
})
-- selene: allow(global_usage)
_G.mason_lspconfig_completion = {
available_server_completion = function()
local available_servers = require("mason-lspconfig").get_available_servers()
local mappings = require "mason-lspconfig.mappings"
local sort_deduped = _.compose(_.sort_by(_.identity), _.uniq_by(_.identity))
local completions = sort_deduped(_.concat(_.keys(mappings.get_filetype_map()), available_servers))
return table.concat(completions, "\n")
end,
installed_server_completion = function()
local installed_servers = require("mason-lspconfig").get_installed_servers()
return table.concat(installed_servers, "\n")
end,
}
return {
LspInstall = LspInstall,
LspUninstall = LspUninstall,
}
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