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local util = require 'lspconfig.util'
local function reload_workspace(bufnr)
bufnr = util.validate_bufnr(bufnr)
vim.lsp.buf_request(bufnr, 'rust-analyzer/reloadWorkspace', nil, function(err)
if err then
error(tostring(err))
end
vim.notify 'Cargo workspace reloaded'
end)
end
return {
default_config = {
cmd = { 'rust-analyzer' },
filetypes = { 'rust' },
root_dir = function(fname)
local cargo_crate_dir = util.root_pattern 'Cargo.toml'(fname)
local cmd = { 'cargo', 'metadata', '--no-deps', '--format-version', '1' }
if cargo_crate_dir ~= nil then
cmd[#cmd + 1] = '--manifest-path'
cmd[#cmd + 1] = util.path.join(cargo_crate_dir, 'Cargo.toml')
end
local cargo_metadata = ''
local cargo_metadata_err = ''
local cm = vim.fn.jobstart(cmd, {
on_stdout = function(_, d, _)
cargo_metadata = table.concat(d, '\n')
end,
on_stderr = function(_, d, _)
cargo_metadata_err = table.concat(d, '\n')
end,
stdout_buffered = true,
stderr_buffered = true,
})
if cm > 0 then
cm = vim.fn.jobwait({ cm })[1]
else
cm = -1
end
local cargo_workspace_dir = nil
if cm == 0 then
cargo_workspace_dir = vim.fn.json_decode(cargo_metadata)['workspace_root']
else
vim.notify(
string.format('[lspconfig] cmd (%q) failed:\n%s', table.concat(cmd, ' '), cargo_metadata_err),
vim.log.levels.WARN
)
end
return cargo_workspace_dir
or cargo_crate_dir
or util.root_pattern 'rust-project.json'(fname)
or util.find_git_ancestor(fname)
end,
settings = {
['rust-analyzer'] = {},
},
},
commands = {
CargoReload = {
function()
reload_workspace(0)
end,
description = 'Reload current cargo workspace',
},
},
docs = {
description = [[
https://github.com/rust-analyzer/rust-analyzer
rust-analyzer (aka rls 2.0), a language server for Rust
See [docs](https://github.com/rust-analyzer/rust-analyzer/tree/master/docs/user#settings) for extra settings.
]],
default_config = {
root_dir = [[root_pattern("Cargo.toml", "rust-project.json")]],
},
},
}
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