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local util = require 'lspconfig.util'
-- https://clangd.llvm.org/extensions.html#switch-between-sourceheader
local function switch_source_header(bufnr)
bufnr = util.validate_bufnr(bufnr)
local clangd_client = util.get_active_client_by_name(bufnr, 'clangd')
local params = { uri = vim.uri_from_bufnr(bufnr) }
if clangd_client then
clangd_client.request('textDocument/switchSourceHeader', params, function(err, result)
if err then
error(tostring(err))
end
if not result then
print 'Corresponding file cannot be determined'
return
end
vim.api.nvim_command('edit ' .. vim.uri_to_fname(result))
end, bufnr)
else
print 'method textDocument/switchSourceHeader is not supported by any servers active on the current buffer'
end
end
local function symbol_info()
local bufnr = vim.api.nvim_get_current_buf()
local clangd_client = util.get_active_client_by_name(bufnr, 'clangd')
if not clangd_client or not clangd_client.supports_method 'textDocument/symbolInfo' then
return vim.notify('Clangd client not found', vim.log.levels.ERROR)
end
local win = vim.api.nvim_get_current_win()
local params = vim.lsp.util.make_position_params(win, clangd_client.offset_encoding)
clangd_client.request('textDocument/symbolInfo', params, function(err, res)
if err or #res == 0 then
-- Clangd always returns an error, there is not reason to parse it
return
end
local container = string.format('container: %s', res[1].containerName) ---@type string
local name = string.format('name: %s', res[1].name) ---@type string
vim.lsp.util.open_floating_preview({ name, container }, '', {
height = 2,
width = math.max(string.len(name), string.len(container)),
focusable = false,
focus = false,
border = require('lspconfig.ui.windows').default_options.border or 'single',
title = 'Symbol Info',
})
end, bufnr)
end
return {
default_config = {
cmd = { 'clangd' },
filetypes = { 'c', 'cpp', 'objc', 'objcpp', 'cuda', 'proto' },
root_dir = function(fname)
return util.root_pattern(
'.clangd',
'.clang-tidy',
'.clang-format',
'compile_commands.json',
'compile_flags.txt',
'configure.ac' -- AutoTools
)(fname) or util.find_git_ancestor(fname)
end,
single_file_support = true,
capabilities = {
textDocument = {
completion = {
editsNearCursor = true,
},
},
offsetEncoding = { 'utf-8', 'utf-16' },
},
},
commands = {
ClangdSwitchSourceHeader = {
function()
switch_source_header(0)
end,
description = 'Switch between source/header',
},
ClangdShowSymbolInfo = {
function()
symbol_info()
end,
description = 'Show symbol info',
},
},
docs = {
description = [[
https://clangd.llvm.org/installation.html
- **NOTE:** Clang >= 11 is recommended! See [#23](https://github.com/neovim/nvim-lspconfig/issues/23).
- If `compile_commands.json` lives in a build directory, you should
symlink it to the root of your source tree.
```
ln -s /path/to/myproject/build/compile_commands.json /path/to/myproject/
```
- clangd relies on a [JSON compilation database](https://clang.llvm.org/docs/JSONCompilationDatabase.html)
specified as compile_commands.json, see https://clangd.llvm.org/installation#compile_commandsjson
]],
},
}
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