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|
---@brief
---
--- https://github.com/rust-lang/rust-analyzer
---
--- rust-analyzer (aka rls 2.0), a language server for Rust
---
---
--- See [docs](https://rust-analyzer.github.io/book/configuration.html) for extra settings. The settings can be used like this:
--- ```lua
--- vim.lsp.config('rust_analyzer', {
--- settings = {
--- ['rust-analyzer'] = {
--- diagnostics = {
--- enable = false;
--- }
--- }
--- }
--- })
--- ```
---
--- Note: do not set `init_options` for this LS config, it will be automatically populated by the contents of settings["rust-analyzer"] per
--- https://github.com/rust-lang/rust-analyzer/blob/eb5da56d839ae0a9e9f50774fa3eb78eb0964550/docs/dev/lsp-extensions.md?plain=1#L26.
local function reload_workspace(bufnr)
local clients = vim.lsp.get_clients { bufnr = bufnr, name = 'rust_analyzer' }
for _, client in ipairs(clients) do
vim.notify 'Reloading Cargo Workspace'
---@diagnostic disable-next-line:param-type-mismatch
client:request('rust-analyzer/reloadWorkspace', nil, function(err)
if err then
error(tostring(err))
end
vim.notify 'Cargo workspace reloaded'
end, 0)
end
end
local function user_sysroot_src()
return vim.tbl_get(vim.lsp.config['rust_analyzer'], 'settings', 'rust-analyzer', 'cargo', 'sysrootSrc')
end
local function default_sysroot_src()
local sysroot = vim.tbl_get(vim.lsp.config['rust_analyzer'], 'settings', 'rust-analyzer', 'cargo', 'sysroot')
if not sysroot then
local rustc = os.getenv 'RUSTC' or 'rustc'
local result = vim.system({ rustc, '--print', 'sysroot' }, { text = true }):wait()
local stdout = result.stdout
if result.code == 0 and stdout then
if string.sub(stdout, #stdout) == '\n' then
if #stdout > 1 then
sysroot = string.sub(stdout, 1, #stdout - 1)
else
sysroot = ''
end
else
sysroot = stdout
end
end
end
return sysroot and vim.fs.joinpath(sysroot, 'lib/rustlib/src/rust/library') or nil
end
local function is_library(fname)
local user_home = vim.fs.normalize(vim.env.HOME)
local cargo_home = os.getenv 'CARGO_HOME' or user_home .. '/.cargo'
local registry = cargo_home .. '/registry/src'
local git_registry = cargo_home .. '/git/checkouts'
local rustup_home = os.getenv 'RUSTUP_HOME' or user_home .. '/.rustup'
local toolchains = rustup_home .. '/toolchains'
local sysroot_src = user_sysroot_src() or default_sysroot_src()
for _, item in ipairs { toolchains, registry, git_registry, sysroot_src } do
if item and vim.fs.relpath(item, fname) then
local clients = vim.lsp.get_clients { name = 'rust_analyzer' }
return #clients > 0 and clients[#clients].config.root_dir or nil
end
end
end
---@type vim.lsp.Config
return {
cmd = { 'rust-analyzer' },
filetypes = { 'rust' },
root_dir = function(bufnr, on_dir)
local fname = vim.api.nvim_buf_get_name(bufnr)
local reused_dir = is_library(fname)
if reused_dir then
on_dir(reused_dir)
return
end
local cargo_crate_dir = vim.fs.root(fname, { 'Cargo.toml' })
local cargo_workspace_root
if cargo_crate_dir == nil then
on_dir(
vim.fs.root(fname, { 'rust-project.json' })
or vim.fs.dirname(vim.fs.find('.git', { path = fname, upward = true })[1])
)
return
end
local cmd = {
'cargo',
'metadata',
'--no-deps',
'--format-version',
'1',
'--manifest-path',
cargo_crate_dir .. '/Cargo.toml',
}
vim.system(cmd, { text = true }, function(output)
if output.code == 0 then
if output.stdout then
local result = vim.json.decode(output.stdout)
if result['workspace_root'] then
cargo_workspace_root = vim.fs.normalize(result['workspace_root'])
end
end
on_dir(cargo_workspace_root or cargo_crate_dir)
else
vim.schedule(function()
vim.notify(('[rust_analyzer] cmd failed with code %d: %s\n%s'):format(output.code, cmd, output.stderr))
end)
end
end)
end,
capabilities = {
experimental = {
serverStatusNotification = true,
commands = {
commands = {
'rust-analyzer.showReferences',
'rust-analyzer.runSingle',
'rust-analyzer.debugSingle',
},
},
},
},
---@type lspconfig.settings.rust_analyzer
settings = {
['rust-analyzer'] = {
lens = {
debug = { enable = true },
enable = true,
implementations = { enable = true },
references = {
adt = { enable = true },
enumVariant = { enable = true },
method = { enable = true },
trait = { enable = true },
},
run = { enable = true },
updateTest = { enable = true },
},
},
},
before_init = function(init_params, config)
-- See https://github.com/rust-lang/rust-analyzer/blob/eb5da56d839ae0a9e9f50774fa3eb78eb0964550/docs/dev/lsp-extensions.md?plain=1#L26
if config.settings and config.settings['rust-analyzer'] then
init_params.initializationOptions = config.settings['rust-analyzer']
end
---@param command table{ title: string, command: string, arguments: any[] }
vim.lsp.commands['rust-analyzer.runSingle'] = function(command)
local r = command.arguments[1]
local cmd = { 'cargo', unpack(r.args.cargoArgs) }
if r.args.executableArgs and #r.args.executableArgs > 0 then
vim.list_extend(cmd, { '--', unpack(r.args.executableArgs) })
end
local proc = vim.system(cmd, { cwd = r.args.cwd, env = r.args.environment })
local result = proc:wait()
if result.code == 0 then
vim.notify(result.stdout, vim.log.levels.INFO)
else
vim.notify(result.stderr, vim.log.levels.ERROR)
end
end
end,
on_attach = function(_, bufnr)
vim.api.nvim_buf_create_user_command(bufnr, 'LspCargoReload', function()
reload_workspace(bufnr)
end, { desc = 'Reload current cargo workspace' })
end,
}
|
