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local log = require 'vim.lsp.log'
local protocol = require 'vim.lsp.protocol'
local util = require 'vim.lsp.util'
local vim = vim
local api = vim.api
local M = {}
local function err_message(...)
api.nvim_err_writeln(table.concat(vim.tbl_flatten{...}))
api.nvim_command("redraw")
end
M['workspace/applyEdit'] = function(_, _, workspace_edit)
if not workspace_edit then return end
-- TODO(ashkan) Do something more with label?
if workspace_edit.label then
print("Workspace edit", workspace_edit.label)
end
util.apply_workspace_edit(workspace_edit.edit)
end
M['textDocument/publishDiagnostics'] = function(_, _, result)
if not result then return end
local uri = result.uri
local bufnr = vim.uri_to_bufnr(uri)
if not bufnr then
err_message("LSP.publishDiagnostics: Couldn't find buffer for ", uri)
return
end
util.buf_clear_diagnostics(bufnr)
-- https://microsoft.github.io/language-server-protocol/specifications/specification-current/#diagnostic
-- The diagnostic's severity. Can be omitted. If omitted it is up to the
-- client to interpret diagnostics as error, warning, info or hint.
-- TODO: Replace this with server-specific heuristics to infer severity.
for _, diagnostic in ipairs(result.diagnostics) do
if diagnostic.severity == nil then
diagnostic.severity = protocol.DiagnosticSeverity.Error
end
end
util.buf_diagnostics_save_positions(bufnr, result.diagnostics)
util.buf_diagnostics_underline(bufnr, result.diagnostics)
util.buf_diagnostics_virtual_text(bufnr, result.diagnostics)
util.buf_diagnostics_signs(bufnr, result.diagnostics)
vim.api.nvim_command("doautocmd User LspDiagnosticsChanged")
end
M['textDocument/references'] = function(_, _, result)
if not result then return end
util.set_qflist(util.locations_to_items(result))
api.nvim_command("copen")
api.nvim_command("wincmd p")
end
local symbol_callback = function(_, _, result, _, bufnr)
if not result or vim.tbl_isempty(result) then return end
util.set_qflist(util.symbols_to_items(result, bufnr))
api.nvim_command("copen")
api.nvim_command("wincmd p")
end
M['textDocument/documentSymbol'] = symbol_callback
M['workspace/symbol'] = symbol_callback
M['textDocument/rename'] = function(_, _, result)
if not result then return end
util.apply_workspace_edit(result)
end
M['textDocument/rangeFormatting'] = function(_, _, result)
if not result then return end
util.apply_text_edits(result)
end
M['textDocument/formatting'] = function(_, _, result)
if not result then return end
util.apply_text_edits(result)
end
M['textDocument/completion'] = function(_, _, result)
if vim.tbl_isempty(result or {}) then return end
local row, col = unpack(api.nvim_win_get_cursor(0))
local line = assert(api.nvim_buf_get_lines(0, row-1, row, false)[1])
local line_to_cursor = line:sub(col+1)
local textMatch = vim.fn.match(line_to_cursor, '\\k*$')
local prefix = line_to_cursor:sub(textMatch+1)
local matches = util.text_document_completion_list_to_complete_items(result, prefix)
vim.fn.complete(textMatch+1, matches)
end
M['textDocument/hover'] = function(_, method, result)
util.focusable_float(method, function()
if not (result and result.contents) then
-- return { 'No information available' }
return
end
local markdown_lines = util.convert_input_to_markdown_lines(result.contents)
markdown_lines = util.trim_empty_lines(markdown_lines)
if vim.tbl_isempty(markdown_lines) then
-- return { 'No information available' }
return
end
local bufnr, winnr = util.fancy_floating_markdown(markdown_lines, {
pad_left = 1; pad_right = 1;
})
util.close_preview_autocmd({"CursorMoved", "BufHidden", "InsertCharPre"}, winnr)
return bufnr, winnr
end)
end
local function location_callback(_, method, result)
if result == nil or vim.tbl_isempty(result) then
local _ = log.info() and log.info(method, 'No location found')
return nil
end
-- textDocument/definition can return Location or Location[]
-- https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_definition
if vim.tbl_islist(result) then
util.jump_to_location(result[1])
if #result > 1 then
util.set_qflist(util.locations_to_items(result))
api.nvim_command("copen")
api.nvim_command("wincmd p")
end
else
util.jump_to_location(result)
end
end
M['textDocument/declaration'] = location_callback
M['textDocument/definition'] = location_callback
M['textDocument/typeDefinition'] = location_callback
M['textDocument/implementation'] = location_callback
M['textDocument/signatureHelp'] = function(_, method, result)
util.focusable_preview(method, function()
if not (result and result.signatures and result.signatures[1]) then
return { 'No signature available' }
end
-- TODO show popup when signatures is empty?
local lines = util.convert_signature_help_to_markdown_lines(result)
lines = util.trim_empty_lines(lines)
if vim.tbl_isempty(lines) then
return { 'No signature available' }
end
return lines, util.try_trim_markdown_code_blocks(lines)
end)
end
M['textDocument/documentHighlight'] = function(_, _, result, _)
if not result then return end
local bufnr = api.nvim_get_current_buf()
util.buf_highlight_references(bufnr, result)
end
M['window/logMessage'] = function(_, _, result, client_id)
local message_type = result.type
local message = result.message
local client = vim.lsp.get_client_by_id(client_id)
local client_name = client and client.name or string.format("id=%d", client_id)
if not client then
err_message("LSP[", client_name, "] client has shut down after sending the message")
end
if message_type == protocol.MessageType.Error then
log.error(message)
elseif message_type == protocol.MessageType.Warning then
log.warn(message)
elseif message_type == protocol.MessageType.Info then
log.info(message)
else
log.debug(message)
end
return result
end
M['window/showMessage'] = function(_, _, result, client_id)
local message_type = result.type
local message = result.message
local client = vim.lsp.get_client_by_id(client_id)
local client_name = client and client.name or string.format("id=%d", client_id)
if not client then
err_message("LSP[", client_name, "] client has shut down after sending the message")
end
if message_type == protocol.MessageType.Error then
err_message("LSP[", client_name, "] ", message)
else
local message_type_name = protocol.MessageType[message_type]
api.nvim_out_write(string.format("LSP[%s][%s] %s\n", client_name, message_type_name, message))
end
return result
end
-- Add boilerplate error validation and logging for all of these.
for k, fn in pairs(M) do
M[k] = function(err, method, params, client_id)
local _ = log.debug() and log.debug('default_callback', method, { params = params, client_id = client_id, err = err })
if err then
error(tostring(err))
end
return fn(err, method, params, client_id)
end
end
return M
-- vim:sw=2 ts=2 et
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