5 # The functions to send request messages to the language server are in this
8 # Refer to https://microsoft.github.io/language-server-protocol/specification
9 # for the Language Server Protocol (LSP) specificaiton.
11 import './options.vim' as opt
12 import './handlers.vim'
14 import './capabilities.vim'
17 import './selection.vim'
19 import './textedit.vim'
20 import './completion.vim'
22 import './signature.vim'
23 import './codeaction.vim'
24 import './codelens.vim'
25 import './callhierarchy.vim' as callhier
26 import './typehierarchy.vim' as typehier
27 import './inlayhints.vim'
29 # LSP server standard output handler
30 def Output_cb(lspserver: dict<any>, chan: channel, msg: any): void
31 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Received {msg->string()}')
33 lspserver.processMessages()
36 # LSP server error output handler
37 def Error_cb(lspserver: dict<any>, chan: channel, emsg: string): void
38 lspserver.errorLog(emsg)
41 # LSP server exit callback
42 def Exit_cb(lspserver: dict<any>, job: job, status: number): void
43 util.WarnMsg($'{strftime("%m/%d/%y %T")}: LSP server ({lspserver.name}) exited with status {status}')
44 lspserver.running = false
45 lspserver.ready = false
46 lspserver.requests = {}
51 def StartServer(lspserver: dict<any>, bnr: number): number
53 util.WarnMsg($'LSP server "{lspserver.name}" is already running')
57 var cmd = [lspserver.path]
58 cmd->extend(lspserver.args)
60 var opts = {in_mode: 'lsp',
64 out_cb: function(Output_cb, [lspserver]),
65 err_cb: function(Error_cb, [lspserver]),
66 exit_cb: function(Exit_cb, [lspserver])}
71 lspserver.requests = {}
72 lspserver.omniCompletePending = false
73 lspserver.completionLazyDoc = false
74 lspserver.completionTriggerChars = []
75 lspserver.signaturePopup = -1
77 var job = cmd->job_start(opts)
78 if job->job_status() == 'fail'
79 util.ErrMsg($'Failed to start LSP server {lspserver.path}')
83 # wait a little for the LSP server to start
87 lspserver.running = true
89 lspserver.initServer(bnr)
94 # process the "initialize" method reply from the LSP server
95 # Result: InitializeResult
96 def ServerInitReply(lspserver: dict<any>, initResult: dict<any>): void
97 if initResult->empty()
101 var caps: dict<any> = initResult.capabilities
102 lspserver.caps = caps
104 for [key, val] in initResult->items()
105 if key == 'capabilities'
109 lspserver.caps[$'~additionalInitResult_{key}'] = val
112 capabilities.ProcessServerCaps(lspserver, caps)
114 if caps->has_key('completionProvider')
115 if opt.lspOptions.autoComplete
116 lspserver.completionTriggerChars =
117 caps.completionProvider->get('triggerCharacters', [])
119 lspserver.completionLazyDoc =
120 caps.completionProvider->get('resolveProvider', false)
123 # send a "initialized" notification to server
124 lspserver.sendInitializedNotif()
125 # send any workspace configuration (optional)
126 if !lspserver.workspaceConfig->empty()
127 lspserver.sendWorkspaceConfig()
129 lspserver.ready = true
130 if exists($'#User#LspServerReady{lspserver.name}')
131 exe $'doautocmd <nomodeline> User LspServerReady{lspserver.name}'
133 # Used internally, and shouldn't be used by users
134 if exists($'#User#LspServerReady_{lspserver.id}')
135 exe $'doautocmd <nomodeline> User LspServerReady_{lspserver.id}'
138 # set the server debug trace level
139 if lspserver.traceLevel != 'off'
140 lspserver.setTrace(lspserver.traceLevel)
143 # if the outline window is opened, then request the symbols for the current
145 if bufwinid('LSP-Outline') != -1
146 lspserver.getDocSymbols(@%)
149 # Update the inlay hints (if enabled)
150 if opt.lspOptions.showInlayHints && (lspserver.isInlayHintProvider
151 || lspserver.isClangdInlayHintsProvider)
152 inlayhints.LspInlayHintsUpdateNow()
156 # Request: "initialize"
157 # Param: InitializeParams
158 def InitServer(lspserver: dict<any>, bnr: number)
159 # interface 'InitializeParams'
160 var initparams: dict<any> = {}
161 initparams.processId = getpid()
162 initparams.clientInfo = {
164 version: v:versionlong->string(),
167 # Compute the rootpath (based on the directory of the buffer)
169 var rootSearchFiles = lspserver.rootSearchFiles
170 var bufDir = bnr->bufname()->fnamemodify(':p:h')
171 if !rootSearchFiles->empty()
172 rootPath = util.FindNearestRootDir(bufDir, rootSearchFiles)
177 # bufDir is within cwd
178 var bufDirPrefix = bufDir[0 : cwd->strcharlen() - 1]
180 ? bufDirPrefix ==? cwd
181 : bufDirPrefix == cwd
188 lspserver.workspaceFolders = [rootPath]
190 var rootUri = util.LspFileToUri(rootPath)
191 initparams.rootPath = rootPath
192 initparams.rootUri = rootUri
193 initparams.workspaceFolders = [{
194 name: rootPath->fnamemodify(':t'),
198 initparams.trace = 'off'
199 initparams.capabilities = capabilities.GetClientCaps()
200 if !lspserver.initializationOptions->empty()
201 initparams.initializationOptions = lspserver.initializationOptions
203 initparams.initializationOptions = {}
206 lspserver.rpcInitializeRequest = initparams
208 lspserver.rpc_a('initialize', initparams, ServerInitReply)
211 # Send a "initialized" notification to the language server
212 def SendInitializedNotif(lspserver: dict<any>)
213 # Notification: 'initialized'
214 # Params: InitializedParams
215 lspserver.sendNotification('initialized')
220 def ShutdownServer(lspserver: dict<any>): void
221 lspserver.rpc('shutdown', {})
224 # Send a 'exit' notification to the language server
225 def ExitServer(lspserver: dict<any>): void
226 # Notification: 'exit'
228 lspserver.sendNotification('exit')
232 def StopServer(lspserver: dict<any>): number
233 if !lspserver.running
234 util.WarnMsg($'LSP server {lspserver.name} is not running')
238 # Send the shutdown request to the server
239 lspserver.shutdownServer()
241 # Notify the server to exit
242 lspserver.exitServer()
244 # Wait for the server to process the exit notification and exit for a
245 # maximum of 2 seconds.
246 var maxCount: number = 1000
247 while lspserver.job->job_status() == 'run' && maxCount > 0
252 if lspserver.job->job_status() == 'run'
253 lspserver.job->job_stop()
255 lspserver.running = false
256 lspserver.ready = false
257 lspserver.requests = {}
261 # Set the language server trace level using the '$/setTrace' notification.
262 # Supported values for "traceVal" are "off", "messages" and "verbose".
263 def SetTrace(lspserver: dict<any>, traceVal: string)
264 # Notification: '$/setTrace'
265 # Params: SetTraceParams
266 var params = {value: traceVal}
267 lspserver.sendNotification('$/setTrace', params)
270 # Log a debug message to the LSP server debug file
271 def TraceLog(lspserver: dict<any>, msg: string)
273 util.TraceLog(lspserver.logfile, false, msg)
277 # Log an error message to the LSP server error file
278 def ErrorLog(lspserver: dict<any>, errmsg: string)
280 util.TraceLog(lspserver.errfile, true, errmsg)
284 # Return the next id for a LSP server request message
285 def NextReqID(lspserver: dict<any>): number
286 var id = lspserver.nextID
287 lspserver.nextID = id + 1
291 # create a LSP server request message
292 def CreateRequest(lspserver: dict<any>, method: string): dict<any>
295 req.id = lspserver.nextReqID()
299 # Save the request, so that the corresponding response can be processed
300 lspserver.requests->extend({[req.id->string()]: req})
305 # create a LSP server response message
306 def CreateResponse(lspserver: dict<any>, req_id: number): dict<any>
314 # create a LSP server notification message
315 def CreateNotification(lspserver: dict<any>, notif: string): dict<any>
324 # send a response message to the server
325 def SendResponse(lspserver: dict<any>, request: dict<any>, result: any, error: dict<any>)
326 if (request.id->type() == v:t_string
327 && (request.id->trim() =~ '[^[:digit:]]\+'
328 || request.id->trim()->empty()))
329 || (request.id->type() != v:t_string && request.id->type() != v:t_number)
330 util.ErrMsg('request.id of response to LSP server is not a correct number')
333 var resp: dict<any> = lspserver.createResponse(
334 request.id->type() == v:t_string ? request.id->str2nr() : request.id)
336 resp->extend({result: result})
338 resp->extend({error: error})
340 lspserver.sendMessage(resp)
343 # Send a request message to LSP server
344 def SendMessage(lspserver: dict<any>, content: dict<any>): void
345 var job = lspserver.job
346 if job->job_status() != 'run'
347 # LSP server has exited
350 job->ch_sendexpr(content)
351 if content->has_key('id')
352 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Sent {content->string()}')
356 # Send a notification message to the language server
357 def SendNotification(lspserver: dict<any>, method: string, params: any = {})
358 var notif: dict<any> = CreateNotification(lspserver, method)
359 notif.params->extend(params)
360 lspserver.sendMessage(notif)
363 # Translate an LSP error code into a readable string
364 def LspGetErrorMessage(errcode: number): string
366 -32001: 'UnknownErrorCode',
367 -32002: 'ServerNotInitialized',
368 -32600: 'InvalidRequest',
369 -32601: 'MethodNotFound',
370 -32602: 'InvalidParams',
371 -32603: 'InternalError',
372 -32700: 'ParseError',
373 -32800: 'RequestCancelled',
374 -32801: 'ContentModified',
375 -32802: 'ServerCancelled',
376 -32803: 'RequestFailed'
379 return errmap->get(errcode, errcode->string())
382 # Process a LSP server response error and display an error message.
383 def ProcessLspServerError(method: string, responseError: dict<any>)
385 var emsg: string = responseError.message
386 emsg ..= $', error = {LspGetErrorMessage(responseError.code)}'
387 if responseError->has_key('data')
388 emsg ..= $', data = {responseError.data->string()}'
390 util.ErrMsg($'request {method} failed ({emsg})')
393 # Send a sync RPC request message to the LSP server and return the received
394 # reply. In case of an error, an empty Dict is returned.
395 def Rpc(lspserver: dict<any>, method: string, params: any, handleError: bool = true): dict<any>
399 req.params->extend(params)
401 var job = lspserver.job
402 if job->job_status() != 'run'
403 # LSP server has exited
407 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Sent {req->string()}')
409 # Do the synchronous RPC call
410 var reply = job->ch_evalexpr(req)
412 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Received {reply->string()}')
414 if reply->has_key('result')
419 if reply->has_key('error') && handleError
421 ProcessLspServerError(method, reply.error)
427 # LSP server asynchronous RPC callback
428 def AsyncRpcCb(lspserver: dict<any>, method: string, RpcCb: func, chan: channel, reply: dict<any>)
429 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Received {reply->string()}')
435 if reply->has_key('error')
437 ProcessLspServerError(method, reply.error)
441 if !reply->has_key('result')
442 util.ErrMsg($'request {method} failed (no result)')
446 RpcCb(lspserver, reply.result)
449 # Send a async RPC request message to the LSP server with a callback function.
450 # Returns the LSP message id. This id can be used to cancel the RPC request
451 # (if needed). Returns -1 on error.
452 def AsyncRpc(lspserver: dict<any>, method: string, params: any, Cbfunc: func): number
456 req.params->extend(params)
458 var job = lspserver.job
459 if job->job_status() != 'run'
460 # LSP server has exited
464 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Sent {req->string()}')
466 # Do the asynchronous RPC call
467 var Fn = function('AsyncRpcCb', [lspserver, method, Cbfunc])
470 if get(g:, 'LSPTest')
471 # When running LSP tests, make this a synchronous RPC call
472 reply = Rpc(lspserver, method, params)
473 Fn(test_null_channel(), reply)
475 # Otherwise, make an asynchronous RPC call
476 reply = job->ch_sendexpr(req, {callback: Fn})
485 # Wait for a response message from the LSP server for the request "req"
486 # Waits for a maximum of 5 seconds
487 def WaitForResponse(lspserver: dict<any>, req: dict<any>)
488 var maxCount: number = 2500
489 var key: string = req.id->string()
491 while lspserver.requests->has_key(key) && maxCount > 0
497 # Retrieve the Workspace configuration asked by the server.
498 # Request: workspace/configuration
499 def WorkspaceConfigGet(lspserver: dict<any>, configItem: dict<any>): dict<any>
500 if lspserver.workspaceConfig->empty()
503 if !configItem->has_key('section') || configItem.section->empty()
504 return lspserver.workspaceConfig
506 var config: dict<any> = lspserver.workspaceConfig
507 for part in configItem.section->split('\.')
508 if !config->has_key(part)
511 config = config[part]
516 # Send a "workspace/didChangeConfiguration" notification to the language
518 def SendWorkspaceConfig(lspserver: dict<any>)
519 # Params: DidChangeConfigurationParams
520 var params = {settings: lspserver.workspaceConfig}
521 lspserver.sendNotification('workspace/didChangeConfiguration', params)
524 # Send a file/document opened notification to the language server.
525 def TextdocDidOpen(lspserver: dict<any>, bnr: number, ftype: string): void
526 # Notification: 'textDocument/didOpen'
527 # Params: DidOpenTextDocumentParams
529 tdi.uri = util.LspBufnrToUri(bnr)
530 tdi.languageId = ftype
532 tdi.text = bnr->getbufline(1, '$')->join("\n") .. "\n"
533 var params = {textDocument: tdi}
534 lspserver.sendNotification('textDocument/didOpen', params)
537 # Send a file/document closed notification to the language server.
538 def TextdocDidClose(lspserver: dict<any>, bnr: number): void
539 # Notification: 'textDocument/didClose'
540 # Params: DidCloseTextDocumentParams
542 tdid.uri = util.LspBufnrToUri(bnr)
543 var params = {textDocument: tdid}
544 lspserver.sendNotification('textDocument/didClose', params)
547 # Send a file/document change notification to the language server.
548 # Params: DidChangeTextDocumentParams
549 def TextdocDidChange(lspserver: dict<any>, bnr: number, start: number,
550 end: number, added: number,
551 changes: list<dict<number>>): void
552 # Notification: 'textDocument/didChange'
553 # Params: DidChangeTextDocumentParams
554 var vtdid: dict<any> = {}
555 vtdid.uri = util.LspBufnrToUri(bnr)
556 # Use Vim 'changedtick' as the LSP document version number
557 vtdid.version = bnr->getbufvar('changedtick')
559 var changeset: list<dict<any>>
561 ##### FIXME: Sending specific buffer changes to the LSP server doesn't
562 ##### work properly as the computed line range numbers is not correct.
563 ##### For now, send the entire buffer content to LSP server.
565 # for change in changes
567 # var start_lnum: number
568 # var end_lnum: number
569 # var start_col: number
570 # var end_col: number
571 # if change.added == 0
573 # start_lnum = change.lnum - 1
574 # end_lnum = change.end - 1
575 # lines = getbufline(bnr, change.lnum, change.end - 1)->join("\n") .. "\n"
578 # elseif change.added > 0
580 # start_lnum = change.lnum - 1
581 # end_lnum = change.lnum - 1
584 # lines = getbufline(bnr, change.lnum, change.lnum + change.added - 1)->join("\n") .. "\n"
587 # start_lnum = change.lnum - 1
588 # end_lnum = change.lnum + (-change.added) - 1
593 # var range: dict<dict<number>> = {'start': {'line': start_lnum, 'character': start_col}, 'end': {'line': end_lnum, 'character': end_col}}
594 # changeset->add({'range': range, 'text': lines})
597 changeset->add({text: bnr->getbufline(1, '$')->join("\n") .. "\n"})
598 var params = {textDocument: vtdid, contentChanges: changeset}
599 lspserver.sendNotification('textDocument/didChange', params)
602 # Return the current cursor position as a LSP position.
603 # find_ident will search for a identifier in front of the cursor, just like
604 # CTRL-] and c_CTRL-R_CTRL-W does.
606 # LSP line and column numbers start from zero, whereas Vim line and column
607 # numbers start from one. The LSP column number is the character index in the
608 # line and not the byte index in the line.
609 def GetPosition(lspserver: dict<any>, find_ident: bool): dict<number>
610 var lnum: number = line('.') - 1
611 var col: number = charcol('.') - 1
612 var line = getline('.')
615 # 1. skip to start of identifier
616 while line[col] != '' && line[col] !~ '\k'
620 # 2. back up to start of identifier
621 while col > 0 && line[col - 1] =~ '\k'
626 # Compute character index counting composing characters as separate
628 var pos = {line: lnum, character: util.GetCharIdxWithCompChar(line, col)}
629 lspserver.encodePosition(bufnr(), pos)
634 # Return the current file name and current cursor position as a LSP
635 # TextDocumentPositionParams structure
636 def GetTextDocPosition(lspserver: dict<any>, find_ident: bool): dict<dict<any>>
637 # interface TextDocumentIdentifier
639 return {textDocument: {uri: util.LspFileToUri(@%)},
640 position: lspserver.getPosition(find_ident)}
643 # Get a list of completion items.
644 # Request: "textDocument/completion"
645 # Param: CompletionParams
646 def GetCompletion(lspserver: dict<any>, triggerKind_arg: number, triggerChar: string): void
647 # Check whether LSP server supports completion
648 if !lspserver.isCompletionProvider
649 util.ErrMsg('LSP server does not support completion')
658 # interface CompletionParams
659 # interface TextDocumentPositionParams
660 var params = lspserver.getTextDocPosition(false)
661 # interface CompletionContext
662 params.context = {triggerKind: triggerKind_arg, triggerCharacter: triggerChar}
664 lspserver.rpc_a('textDocument/completion', params,
665 completion.CompletionReply)
668 # Get lazy properties for a completion item.
669 # Request: "completionItem/resolve"
670 # Param: CompletionItem
671 def ResolveCompletion(lspserver: dict<any>, item: dict<any>): void
672 # Check whether LSP server supports completion item resolve
673 if !lspserver.isCompletionResolveProvider
674 util.ErrMsg('LSP server does not support completion item resolve')
678 # interface CompletionItem
679 lspserver.rpc_a('completionItem/resolve', item,
680 completion.CompletionResolveReply)
683 # Jump to or peek a symbol location.
685 # Send 'msg' to a LSP server and process the reply. 'msg' is one of the
687 # textDocument/definition
688 # textDocument/declaration
689 # textDocument/typeDefinition
690 # textDocument/implementation
692 # Process the LSP server reply and jump to the symbol location. Before
693 # jumping to the symbol location, save the current cursor position in the tag
696 # If 'peekSymbol' is true, then display the symbol location in the preview
697 # window but don't jump to the symbol location.
699 # Result: Location | Location[] | LocationLink[] | null
700 def GotoSymbolLoc(lspserver: dict<any>, msg: string, peekSymbol: bool,
701 cmdmods: string, count: number)
702 var reply = lspserver.rpc(msg, lspserver.getTextDocPosition(true), false)
703 if reply->empty() || reply.result->empty()
705 if msg == 'textDocument/declaration'
706 emsg = 'symbol declaration is not found'
707 elseif msg == 'textDocument/typeDefinition'
708 emsg = 'symbol type definition is not found'
709 elseif msg == 'textDocument/implementation'
710 emsg = 'symbol implementation is not found'
712 emsg = 'symbol definition is not found'
719 var result = reply.result
720 var location: dict<any>
721 if result->type() == v:t_list
723 # When there are multiple symbol locations, and a specific one isn't
724 # requested with 'count', display the locations in a location list.
726 var title: string = ''
727 if msg == 'textDocument/declaration'
728 title = 'Declarations'
729 elseif msg == 'textDocument/typeDefinition'
730 title = 'Type Definitions'
731 elseif msg == 'textDocument/implementation'
732 title = 'Implementations'
734 title = 'Definitions'
737 if lspserver.needOffsetEncoding
738 # Decode the position encoding in all the symbol locations
739 result->map((_, loc) => {
740 lspserver.decodeLocation(loc)
745 symbol.ShowLocations(lspserver, result, peekSymbol, title)
750 # Select the location requested in 'count'
752 if idx >= result->len()
753 idx = result->len() - 1
755 location = result[idx]
759 lspserver.decodeLocation(location)
761 symbol.GotoSymbol(lspserver, location, peekSymbol, cmdmods)
764 # Request: "textDocument/definition"
765 # Param: DefinitionParams
766 def GotoDefinition(lspserver: dict<any>, peek: bool, cmdmods: string, count: number)
767 # Check whether LSP server supports jumping to a definition
768 if !lspserver.isDefinitionProvider
769 util.ErrMsg('Jumping to a symbol definition is not supported')
773 # interface DefinitionParams
774 # interface TextDocumentPositionParams
775 GotoSymbolLoc(lspserver, 'textDocument/definition', peek, cmdmods, count)
778 # Request: "textDocument/declaration"
779 # Param: DeclarationParams
780 def GotoDeclaration(lspserver: dict<any>, peek: bool, cmdmods: string, count: number)
781 # Check whether LSP server supports jumping to a declaration
782 if !lspserver.isDeclarationProvider
783 util.ErrMsg('Jumping to a symbol declaration is not supported')
787 # interface DeclarationParams
788 # interface TextDocumentPositionParams
789 GotoSymbolLoc(lspserver, 'textDocument/declaration', peek, cmdmods, count)
792 # Request: "textDocument/typeDefinition"
793 # Param: TypeDefinitionParams
794 def GotoTypeDef(lspserver: dict<any>, peek: bool, cmdmods: string, count: number)
795 # Check whether LSP server supports jumping to a type definition
796 if !lspserver.isTypeDefinitionProvider
797 util.ErrMsg('Jumping to a symbol type definition is not supported')
801 # interface TypeDefinitionParams
802 # interface TextDocumentPositionParams
803 GotoSymbolLoc(lspserver, 'textDocument/typeDefinition', peek, cmdmods, count)
806 # Request: "textDocument/implementation"
807 # Param: ImplementationParams
808 def GotoImplementation(lspserver: dict<any>, peek: bool, cmdmods: string, count: number)
809 # Check whether LSP server supports jumping to a implementation
810 if !lspserver.isImplementationProvider
811 util.ErrMsg('Jumping to a symbol implementation is not supported')
815 # interface ImplementationParams
816 # interface TextDocumentPositionParams
817 GotoSymbolLoc(lspserver, 'textDocument/implementation', peek, cmdmods, count)
820 # Request: "textDocument/switchSourceHeader"
821 # Param: TextDocumentIdentifier
822 # Clangd specific extension
823 def SwitchSourceHeader(lspserver: dict<any>)
825 param.uri = util.LspFileToUri(@%)
826 var reply = lspserver.rpc('textDocument/switchSourceHeader', param)
827 if reply->empty() || reply.result->empty()
828 util.WarnMsg('No alternate file found')
832 # process the 'textDocument/switchSourceHeader' reply from the LSP server
834 var fname = util.LspUriToFile(reply.result)
835 if (&modified && !&hidden) || &buftype != ''
836 # if the current buffer has unsaved changes and 'hidden' is not set,
837 # or if the current buffer is a special buffer, then ask to save changes
838 exe $'confirm edit {fname}'
844 # get symbol signature help.
845 # Request: "textDocument/signatureHelp"
846 # Param: SignatureHelpParams
847 def ShowSignature(lspserver: dict<any>): void
848 # Check whether LSP server supports signature help
849 if !lspserver.isSignatureHelpProvider
850 util.ErrMsg('LSP server does not support signature help')
854 # interface SignatureHelpParams
855 # interface TextDocumentPositionParams
856 var params = lspserver.getTextDocPosition(false)
857 lspserver.rpc_a('textDocument/signatureHelp', params,
858 signature.SignatureHelp)
861 # Send a file/document saved notification to the language server
862 def DidSaveFile(lspserver: dict<any>, bnr: number): void
863 # Check whether the LSP server supports the didSave notification
864 if !lspserver.supportsDidSave
865 # LSP server doesn't support text document synchronization
869 # Notification: 'textDocument/didSave'
870 # Params: DidSaveTextDocumentParams
871 var params = {textDocument: {uri: util.LspBufnrToUri(bnr)}}
872 # FIXME: Need to set "params.text" when
873 # 'lspserver.caps.textDocumentSync.save.includeText' is set to true.
874 lspserver.sendNotification('textDocument/didSave', params)
877 # get the hover information
878 # Request: "textDocument/hover"
880 def ShowHoverInfo(lspserver: dict<any>, cmdmods: string): void
881 # Check whether LSP server supports getting hover information.
882 # caps->hoverProvider can be a "boolean" or "HoverOptions"
883 if !lspserver.isHoverProvider
887 # interface HoverParams
888 # interface TextDocumentPositionParams
889 var params = lspserver.getTextDocPosition(false)
890 lspserver.rpc_a('textDocument/hover', params, (_, reply) => {
891 hover.HoverReply(lspserver, reply, cmdmods)
895 # Request: "textDocument/references"
896 # Param: ReferenceParams
897 def ShowReferences(lspserver: dict<any>, peek: bool): void
898 # Check whether LSP server supports getting reference information
899 if !lspserver.isReferencesProvider
900 util.ErrMsg('LSP server does not support showing references')
904 # interface ReferenceParams
905 # interface TextDocumentPositionParams
907 param = lspserver.getTextDocPosition(true)
908 param.context = {includeDeclaration: true}
909 var reply = lspserver.rpc('textDocument/references', param)
911 # Result: Location[] | null
912 if reply->empty() || reply.result->empty()
913 util.WarnMsg('No references found')
917 if lspserver.needOffsetEncoding
918 # Decode the position encoding in all the reference locations
919 reply.result->map((_, loc) => {
920 lspserver.decodeLocation(loc)
925 symbol.ShowLocations(lspserver, reply.result, peek, 'Symbol References')
928 # process the 'textDocument/documentHighlight' reply from the LSP server
929 # Result: DocumentHighlight[] | null
930 def DocHighlightReply(lspserver: dict<any>, docHighlightReply: any,
931 bnr: number, cmdmods: string): void
932 if docHighlightReply->empty()
933 if cmdmods !~ 'silent'
934 util.WarnMsg($'No highlight for the current position')
939 for docHL in docHighlightReply
940 lspserver.decodeRange(bnr, docHL.range)
941 var kind: number = docHL->get('kind', 1)
945 propName = 'LspReadRef'
948 propName = 'LspWriteRef'
951 propName = 'LspTextRef'
954 prop_add(docHL.range.start.line + 1,
955 util.GetLineByteFromPos(bnr, docHL.range.start) + 1,
956 {end_lnum: docHL.range.end.line + 1,
957 end_col: util.GetLineByteFromPos(bnr, docHL.range.end) + 1,
960 catch /E966\|E964/ # Invalid lnum | Invalid col
961 # Highlight replies arrive asynchronously and the document might have
962 # been modified in the mean time. As the reply is stale, ignore invalid
963 # line number and column number errors.
968 # Request: "textDocument/documentHighlight"
969 # Param: DocumentHighlightParams
970 def DocHighlight(lspserver: dict<any>, cmdmods: string): void
971 # Check whether LSP server supports getting highlight information
972 if !lspserver.isDocumentHighlightProvider
973 util.ErrMsg('LSP server does not support document highlight')
977 # interface DocumentHighlightParams
978 # interface TextDocumentPositionParams
979 var params = lspserver.getTextDocPosition(false)
980 lspserver.rpc_a('textDocument/documentHighlight', params, (_, reply) => {
981 DocHighlightReply(lspserver, reply, bufnr(), cmdmods)
985 # Request: "textDocument/documentSymbol"
986 # Param: DocumentSymbolParams
987 def GetDocSymbols(lspserver: dict<any>, fname: string): void
988 # Check whether LSP server supports getting document symbol information
989 if !lspserver.isDocumentSymbolProvider
990 util.ErrMsg('LSP server does not support getting list of symbols')
994 # interface DocumentSymbolParams
995 # interface TextDocumentIdentifier
996 var params = {textDocument: {uri: util.LspFileToUri(fname)}}
997 lspserver.rpc_a('textDocument/documentSymbol', params, (_, reply) => {
998 symbol.DocSymbolReply(lspserver, reply, fname)
1002 # Request: "textDocument/formatting"
1003 # Param: DocumentFormattingParams
1005 # Request: "textDocument/rangeFormatting"
1006 # Param: DocumentRangeFormattingParams
1007 def TextDocFormat(lspserver: dict<any>, fname: string, rangeFormat: bool,
1008 start_lnum: number, end_lnum: number)
1009 # Check whether LSP server supports formatting documents
1010 if !lspserver.isDocumentFormattingProvider
1011 util.ErrMsg('LSP server does not support formatting documents')
1017 cmd = 'textDocument/rangeFormatting'
1019 cmd = 'textDocument/formatting'
1022 # interface DocumentFormattingParams
1023 # interface TextDocumentIdentifier
1024 # interface FormattingOptions
1026 param.textDocument = {uri: util.LspFileToUri(fname)}
1027 var fmtopts: dict<any> = {
1028 tabSize: shiftwidth(),
1029 insertSpaces: &expandtab ? true : false,
1031 param.options = fmtopts
1034 var r: dict<dict<number>> = {
1035 start: {line: start_lnum - 1, character: 0},
1036 end: {line: end_lnum - 1, character: charcol([end_lnum, '$']) - 1}}
1040 var reply = lspserver.rpc(cmd, param)
1042 # result: TextEdit[] | null
1044 if reply->empty() || reply.result->empty()
1049 var bnr: number = fname->bufnr()
1051 # file is already removed
1055 if lspserver.needOffsetEncoding
1056 # Decode the position encoding in all the reference locations
1057 reply.result->map((_, textEdit) => {
1058 lspserver.decodeRange(bnr, textEdit.range)
1063 # interface TextEdit
1064 # Apply each of the text edit operations
1065 var save_cursor: list<number> = getcurpos()
1066 textedit.ApplyTextEdits(bnr, reply.result)
1067 save_cursor->setpos('.')
1070 # Request: "textDocument/prepareCallHierarchy"
1071 def PrepareCallHierarchy(lspserver: dict<any>): dict<any>
1072 # interface CallHierarchyPrepareParams
1073 # interface TextDocumentPositionParams
1074 var param: dict<any>
1075 param = lspserver.getTextDocPosition(false)
1076 var reply = lspserver.rpc('textDocument/prepareCallHierarchy', param)
1077 if reply->empty() || reply.result->empty()
1081 # Result: CallHierarchyItem[] | null
1082 var choice: number = 1
1083 if reply.result->len() > 1
1084 var items: list<string> = ['Select a Call Hierarchy Item:']
1085 for i in reply.result->len()->range()
1086 items->add(printf("%d. %s", i + 1, reply.result[i].name))
1088 choice = items->inputlist()
1089 if choice < 1 || choice > items->len()
1094 return reply.result[choice - 1]
1097 # Request: "callHierarchy/incomingCalls"
1098 def IncomingCalls(lspserver: dict<any>, fname: string)
1099 # Check whether LSP server supports call hierarchy
1100 if !lspserver.isCallHierarchyProvider
1101 util.ErrMsg('LSP server does not support call hierarchy')
1105 callhier.IncomingCalls(lspserver)
1108 def GetIncomingCalls(lspserver: dict<any>, item: dict<any>): any
1109 # Request: "callHierarchy/incomingCalls"
1110 # Param: CallHierarchyIncomingCallsParams
1113 var reply = lspserver.rpc('callHierarchy/incomingCalls', param)
1118 if lspserver.needOffsetEncoding
1119 # Decode the position encoding in all the incoming call locations
1120 var bnr = util.LspUriToBufnr(item.uri)
1121 reply.result->map((_, hierItem) => {
1122 lspserver.decodeRange(bnr, hierItem.from.range)
1130 # Request: "callHierarchy/outgoingCalls"
1131 def OutgoingCalls(lspserver: dict<any>, fname: string)
1132 # Check whether LSP server supports call hierarchy
1133 if !lspserver.isCallHierarchyProvider
1134 util.ErrMsg('LSP server does not support call hierarchy')
1138 callhier.OutgoingCalls(lspserver)
1141 def GetOutgoingCalls(lspserver: dict<any>, item: dict<any>): any
1142 # Request: "callHierarchy/outgoingCalls"
1143 # Param: CallHierarchyOutgoingCallsParams
1146 var reply = lspserver.rpc('callHierarchy/outgoingCalls', param)
1151 if lspserver.needOffsetEncoding
1152 # Decode the position encoding in all the outgoing call locations
1153 var bnr = util.LspUriToBufnr(item.uri)
1154 reply.result->map((_, hierItem) => {
1155 lspserver.decodeRange(bnr, hierItem.to.range)
1163 # Request: "textDocument/inlayHint"
1165 def InlayHintsShow(lspserver: dict<any>)
1166 # Check whether LSP server supports type hierarchy
1167 if !lspserver.isInlayHintProvider && !lspserver.isClangdInlayHintsProvider
1168 util.ErrMsg('LSP server does not support inlay hint')
1172 var lastlnum = line('$')
1174 textDocument: {uri: util.LspFileToUri(@%)},
1177 start: {line: 0, character: 0},
1178 end: {line: lastlnum - 1, character: charcol([lastlnum, '$']) - 1}
1182 lspserver.encodeRange(bufnr(), param.range)
1185 if lspserver.isClangdInlayHintsProvider
1186 # clangd-style inlay hints
1187 msg = 'clangd/inlayHints'
1189 msg = 'textDocument/inlayHint'
1191 var reply = lspserver.rpc_a(msg, param, inlayhints.InlayHintsReply)
1194 def DecodeTypeHierarchy(lspserver: dict<any>, isSuper: bool, typeHier: dict<any>)
1195 if !lspserver.needOffsetEncoding
1198 var bnr = util.LspUriToBufnr(typeHier.uri)
1199 lspserver.decodeRange(bnr, typeHier.range)
1200 lspserver.decodeRange(bnr, typeHier.selectionRange)
1201 var subType: list<dict<any>>
1203 subType = typeHier->get('parents', [])
1205 subType = typeHier->get('children', [])
1207 if !subType->empty()
1208 # Decode the position encoding in all the type hierarchy items
1209 subType->map((_, typeHierItem) => {
1210 DecodeTypeHierarchy(lspserver, isSuper, typeHierItem)
1216 # Request: "textDocument/typehierarchy"
1217 # Support the clangd version of type hierarchy retrieval method.
1218 # The method described in the LSP 3.17.0 standard is not supported as clangd
1219 # doesn't support that method.
1220 def TypeHiearchy(lspserver: dict<any>, direction: number)
1221 # Check whether LSP server supports type hierarchy
1222 if !lspserver.isTypeHierarchyProvider
1223 util.ErrMsg('LSP server does not support type hierarchy')
1227 # interface TypeHierarchy
1228 # interface TextDocumentPositionParams
1229 var param: dict<any>
1230 param = lspserver.getTextDocPosition(false)
1231 # 0: children, 1: parent, 2: both
1232 param.direction = direction
1234 var reply = lspserver.rpc('textDocument/typeHierarchy', param)
1235 if reply->empty() || reply.result->empty()
1236 util.WarnMsg('No type hierarchy available')
1240 var isSuper = (direction == 1)
1242 DecodeTypeHierarchy(lspserver, isSuper, reply.result)
1244 typehier.ShowTypeHierarchy(lspserver, isSuper, reply.result)
1247 # Decode the ranges in "WorkspaceEdit"
1248 def DecodeWorkspaceEdit(lspserver: dict<any>, workspaceEdit: dict<any>)
1249 if !lspserver.needOffsetEncoding
1252 if workspaceEdit->has_key('changes')
1253 for [uri, changes] in workspaceEdit.changes->items()
1254 var bnr: number = util.LspUriToBufnr(uri)
1258 # Decode the position encoding in all the text edit locations
1259 changes->map((_, textEdit) => {
1260 lspserver.decodeRange(bnr, textEdit.range)
1266 if workspaceEdit->has_key('documentChanges')
1267 for change in workspaceEdit.documentChanges
1268 if !change->has_key('kind')
1269 var bnr: number = util.LspUriToBufnr(change.textDocument.uri)
1273 # Decode the position encoding in all the text edit locations
1274 change.edits->map((_, textEdit) => {
1275 lspserver.decodeRange(bnr, textEdit.range)
1283 # Request: "textDocument/rename"
1284 # Param: RenameParams
1285 def RenameSymbol(lspserver: dict<any>, newName: string)
1286 # Check whether LSP server supports rename operation
1287 if !lspserver.isRenameProvider
1288 util.ErrMsg('LSP server does not support rename operation')
1292 # interface RenameParams
1293 # interface TextDocumentPositionParams
1294 var param: dict<any> = {}
1295 param = lspserver.getTextDocPosition(true)
1296 param.newName = newName
1298 var reply = lspserver.rpc('textDocument/rename', param)
1300 # Result: WorkspaceEdit | null
1301 if reply->empty() || reply.result->empty()
1306 # result: WorkspaceEdit
1307 DecodeWorkspaceEdit(lspserver, reply.result)
1308 textedit.ApplyWorkspaceEdit(reply.result)
1311 # Decode the range in "CodeAction"
1312 def DecodeCodeAction(lspserver: dict<any>, actionList: list<dict<any>>)
1313 if !lspserver.needOffsetEncoding
1316 actionList->map((_, act) => {
1317 if !act->has_key('disabled') && act->has_key('edit')
1318 DecodeWorkspaceEdit(lspserver, act.edit)
1324 # Request: "textDocument/codeAction"
1325 # Param: CodeActionParams
1326 def CodeAction(lspserver: dict<any>, fname_arg: string, line1: number,
1327 line2: number, query: string)
1328 # Check whether LSP server supports code action operation
1329 if !lspserver.isCodeActionProvider
1330 util.ErrMsg('LSP server does not support code action operation')
1334 # interface CodeActionParams
1335 var params: dict<any> = {}
1336 var fname: string = fname_arg->fnamemodify(':p')
1337 var bnr: number = fname_arg->bufnr()
1338 var r: dict<dict<number>> = {
1341 character: line1 == line2 ? util.GetCharIdxWithCompChar(getline('.'), charcol('.') - 1) : 0
1345 character: util.GetCharIdxWithCompChar(getline(line2), charcol([line2, '$']) - 1)
1348 lspserver.encodeRange(bnr, r)
1349 params->extend({textDocument: {uri: util.LspFileToUri(fname)}, range: r})
1350 var d: list<dict<any>> = []
1351 for lnum in range(line1, line2)
1352 var diagsInfo: list<dict<any>> = diag.GetDiagsByLine(bnr, lnum, lspserver)->deepcopy()
1353 if lspserver.needOffsetEncoding
1354 diagsInfo->map((_, di) => {
1355 lspserver.encodeRange(bnr, di.range)
1359 d->extend(diagsInfo)
1361 params->extend({context: {diagnostics: d, triggerKind: 1}})
1363 var reply = lspserver.rpc('textDocument/codeAction', params)
1365 # Result: (Command | CodeAction)[] | null
1366 if reply->empty() || reply.result->empty()
1367 # no action can be performed
1368 util.WarnMsg('No code action is available')
1372 DecodeCodeAction(lspserver, reply.result)
1374 codeaction.ApplyCodeAction(lspserver, reply.result, query)
1377 # Request: "textDocument/codeLens"
1378 # Param: CodeLensParams
1379 def CodeLens(lspserver: dict<any>, fname: string)
1380 # Check whether LSP server supports code lens operation
1381 if !lspserver.isCodeLensProvider
1382 util.ErrMsg('LSP server does not support code lens operation')
1386 var params = {textDocument: {uri: util.LspFileToUri(fname)}}
1387 var reply = lspserver.rpc('textDocument/codeLens', params)
1388 if reply->empty() || reply.result->empty()
1389 util.WarnMsg($'No code lens actions found for the current file')
1393 var bnr = fname->bufnr()
1395 # Decode the position encoding in all the code lens items
1396 if lspserver.needOffsetEncoding
1397 reply.result->map((_, codeLensItem) => {
1398 lspserver.decodeRange(bnr, codeLensItem.range)
1403 codelens.ProcessCodeLens(lspserver, bnr, reply.result)
1406 # Request: "codeLens/resolve"
1408 def ResolveCodeLens(lspserver: dict<any>, bnr: number,
1409 codeLens: dict<any>): dict<any>
1410 if !lspserver.isCodeLensResolveProvider
1414 if lspserver.needOffsetEncoding
1415 lspserver.encodeRange(bnr, codeLens.range)
1418 var reply = lspserver.rpc('codeLens/resolve', codeLens)
1423 var codeLensItem: dict<any> = reply.result
1425 # Decode the position encoding in the code lens item
1426 if lspserver.needOffsetEncoding
1427 lspserver.decodeRange(bnr, codeLensItem.range)
1433 # List project-wide symbols matching query string
1434 # Request: "workspace/symbol"
1435 # Param: WorkspaceSymbolParams
1436 def WorkspaceQuerySymbols(lspserver: dict<any>, query: string, firstCall: bool, cmdmods: string = '')
1437 # Check whether the LSP server supports listing workspace symbols
1438 if !lspserver.isWorkspaceSymbolProvider
1439 util.ErrMsg('LSP server does not support listing workspace symbols')
1443 # Param: WorkspaceSymbolParams
1446 var reply = lspserver.rpc('workspace/symbol', param)
1447 if reply->empty() || reply.result->empty()
1448 util.WarnMsg($'Symbol "{query}" is not found')
1452 var symInfo: list<dict<any>> = reply.result
1454 if lspserver.needOffsetEncoding
1455 # Decode the position encoding in all the symbol locations
1456 symInfo->map((_, sym) => {
1457 if sym->has_key('location')
1458 lspserver.decodeLocation(sym.location)
1464 if firstCall && symInfo->len() == 1
1465 # If there is only one symbol, then jump to the symbol location
1466 var symLoc: dict<any> = symInfo[0]->get('location', {})
1468 symbol.GotoSymbol(lspserver, symLoc, false, cmdmods)
1471 symbol.WorkspaceSymbolPopup(lspserver, query, symInfo, cmdmods)
1475 # Add a workspace folder to the language server.
1476 def AddWorkspaceFolder(lspserver: dict<any>, dirName: string): void
1477 if !lspserver.caps->has_key('workspace')
1478 || !lspserver.caps.workspace->has_key('workspaceFolders')
1479 || !lspserver.caps.workspace.workspaceFolders->has_key('supported')
1480 || !lspserver.caps.workspace.workspaceFolders.supported
1481 util.ErrMsg('LSP server does not support workspace folders')
1485 if lspserver.workspaceFolders->index(dirName) != -1
1486 util.ErrMsg($'{dirName} is already part of this workspace')
1490 # Notification: 'workspace/didChangeWorkspaceFolders'
1491 # Params: DidChangeWorkspaceFoldersParams
1492 var params = {event: {added: [dirName], removed: []}}
1493 lspserver.sendNotification('workspace/didChangeWorkspaceFolders', params)
1495 lspserver.workspaceFolders->add(dirName)
1498 # Remove a workspace folder from the language server.
1499 def RemoveWorkspaceFolder(lspserver: dict<any>, dirName: string): void
1500 if !lspserver.caps->has_key('workspace')
1501 || !lspserver.caps.workspace->has_key('workspaceFolders')
1502 || !lspserver.caps.workspace.workspaceFolders->has_key('supported')
1503 || !lspserver.caps.workspace.workspaceFolders.supported
1504 util.ErrMsg('LSP server does not support workspace folders')
1508 var idx: number = lspserver.workspaceFolders->index(dirName)
1510 util.ErrMsg($'{dirName} is not currently part of this workspace')
1514 # Notification: "workspace/didChangeWorkspaceFolders"
1515 # Param: DidChangeWorkspaceFoldersParams
1516 var params = {event: {added: [], removed: [dirName]}}
1517 lspserver.sendNotification('workspace/didChangeWorkspaceFolders', params)
1519 lspserver.workspaceFolders->remove(idx)
1522 def DecodeSelectionRange(lspserver: dict<any>, bnr: number, selRange: dict<any>)
1523 lspserver.decodeRange(bnr, selRange.range)
1524 if selRange->has_key('parent')
1525 DecodeSelectionRange(lspserver, bnr, selRange.parent)
1529 # select the text around the current cursor location
1530 # Request: "textDocument/selectionRange"
1531 # Param: SelectionRangeParams
1532 def SelectionRange(lspserver: dict<any>, fname: string)
1533 # Check whether LSP server supports selection ranges
1534 if !lspserver.isSelectionRangeProvider
1535 util.ErrMsg('LSP server does not support selection ranges')
1539 # clear the previous selection reply
1540 lspserver.selection = {}
1542 # interface SelectionRangeParams
1543 # interface TextDocumentIdentifier
1545 param.textDocument = {}
1546 param.textDocument.uri = util.LspFileToUri(fname)
1547 param.positions = [lspserver.getPosition(false)]
1548 var reply = lspserver.rpc('textDocument/selectionRange', param)
1550 if reply->empty() || reply.result->empty()
1554 # Decode the position encoding in all the selection range items
1555 if lspserver.needOffsetEncoding
1556 var bnr = fname->bufnr()
1557 reply.result->map((_, selItem) => {
1558 DecodeSelectionRange(lspserver, bnr, selItem)
1563 selection.SelectionStart(lspserver, reply.result)
1566 # Expand the previous selection or start a new one
1567 def SelectionExpand(lspserver: dict<any>)
1568 # Check whether LSP server supports selection ranges
1569 if !lspserver.isSelectionRangeProvider
1570 util.ErrMsg('LSP server does not support selection ranges')
1574 selection.SelectionModify(lspserver, true)
1577 # Shrink the previous selection or start a new one
1578 def SelectionShrink(lspserver: dict<any>)
1579 # Check whether LSP server supports selection ranges
1580 if !lspserver.isSelectionRangeProvider
1581 util.ErrMsg('LSP server does not support selection ranges')
1585 selection.SelectionModify(lspserver, false)
1588 # fold the entire document
1589 # Request: "textDocument/foldingRange"
1590 # Param: FoldingRangeParams
1591 def FoldRange(lspserver: dict<any>, fname: string)
1592 # Check whether LSP server supports fold ranges
1593 if !lspserver.isFoldingRangeProvider
1594 util.ErrMsg('LSP server does not support folding')
1598 # interface FoldingRangeParams
1599 # interface TextDocumentIdentifier
1600 var params = {textDocument: {uri: util.LspFileToUri(fname)}}
1601 var reply = lspserver.rpc('textDocument/foldingRange', params)
1602 if reply->empty() || reply.result->empty()
1606 # result: FoldingRange[]
1607 var end_lnum: number
1608 var last_lnum: number = line('$')
1609 for foldRange in reply.result
1610 end_lnum = foldRange.endLine + 1
1611 if end_lnum < foldRange.startLine + 2
1612 end_lnum = foldRange.startLine + 2
1614 exe $':{foldRange.startLine + 2}, {end_lnum}fold'
1615 # Open all the folds, otherwise the subsequently created folds are not
1621 :setlocal foldcolumn=2
1625 # process the 'workspace/executeCommand' reply from the LSP server
1626 # Result: any | null
1627 def WorkspaceExecuteReply(lspserver: dict<any>, execReply: any)
1628 # Nothing to do for the reply
1631 # Request the LSP server to execute a command
1632 # Request: workspace/executeCommand
1633 # Params: ExecuteCommandParams
1634 def ExecuteCommand(lspserver: dict<any>, cmd: dict<any>)
1635 # Need to check for lspserver.caps.executeCommandProvider?
1637 lspserver.rpc_a('workspace/executeCommand', params, WorkspaceExecuteReply)
1640 # Display the LSP server capabilities (received during the initialization
1642 def GetCapabilities(lspserver: dict<any>): list<string>
1644 var heading = $"'{lspserver.path}' Language Server Capabilities"
1645 var underlines = repeat('=', heading->len())
1646 l->extend([heading, underlines])
1647 for k in lspserver.caps->keys()->sort()
1648 l->add($'{k}: {lspserver.caps[k]->string()}')
1653 # Display the LSP server initialize request and result
1654 def GetInitializeRequest(lspserver: dict<any>): list<string>
1656 var heading = $"'{lspserver.path}' Language Server Initialize Request"
1657 var underlines = repeat('=', heading->len())
1658 l->extend([heading, underlines])
1659 if lspserver->has_key('rpcInitializeRequest')
1660 for k in lspserver.rpcInitializeRequest->keys()->sort()
1661 l->add($'{k}: {lspserver.rpcInitializeRequest[k]->string()}')
1667 # Store a log or trace message received from the language server.
1668 def AddMessage(lspserver: dict<any>, msgType: string, newMsg: string)
1669 # A single message may contain multiple lines separate by newline
1670 var msgs = newMsg->split("\n")
1671 lspserver.messages->add($'{strftime("%m/%d/%y %T")}: [{msgType}]: {msgs[0]}')
1672 lspserver.messages->extend(msgs[1 : ])
1673 # Keep only the last 500 messages to reduce the memory usage
1674 if lspserver.messages->len() >= 600
1675 lspserver.messages = lspserver.messages[-500 : ]
1679 # Display the log messages received from the LSP server (window/logMessage)
1680 def GetMessages(lspserver: dict<any>): list<string>
1681 if lspserver.messages->empty()
1682 return [$'No messages received from "{lspserver.name}" server']
1686 var heading = $"'{lspserver.path}' Language Server Messages"
1687 var underlines = repeat('=', heading->len())
1688 l->extend([heading, underlines])
1689 l->extend(lspserver.messages)
1693 # Send a 'textDocument/definition' request to the LSP server to get the
1694 # location where the symbol under the cursor is defined and return a list of
1695 # Dicts in a format accepted by the 'tagfunc' option.
1696 # Returns null if the LSP server doesn't support getting the location of a
1697 # symbol definition or the symbol is not defined.
1698 def TagFunc(lspserver: dict<any>, pat: string, flags: string, info: dict<any>): any
1699 # Check whether LSP server supports getting the location of a definition
1700 if !lspserver.isDefinitionProvider
1704 # interface DefinitionParams
1705 # interface TextDocumentPositionParams
1706 var reply = lspserver.rpc('textDocument/definition',
1707 lspserver.getTextDocPosition(false))
1708 if reply->empty() || reply.result->empty()
1712 var taglocations: list<dict<any>>
1713 if reply.result->type() == v:t_list
1714 taglocations = reply.result
1716 taglocations = [reply.result]
1719 if lspserver.needOffsetEncoding
1720 # Decode the position encoding in all the reference locations
1721 taglocations->map((_, loc) => {
1722 lspserver.decodeLocation(loc)
1727 return symbol.TagFunc(lspserver, taglocations, pat)
1730 # Returns unique ID used for identifying the various servers
1731 var UniqueServerIdCounter = 0
1732 def GetUniqueServerId(): number
1733 UniqueServerIdCounter = UniqueServerIdCounter + 1
1734 return UniqueServerIdCounter
1737 export def NewLspServer(serverParams: dict<any>): dict<any>
1738 var lspserver: dict<any> = {
1739 id: GetUniqueServerId(),
1740 name: serverParams.name,
1741 path: serverParams.path,
1742 args: serverParams.args->deepcopy(),
1743 syncInit: serverParams.syncInit,
1744 initializationOptions: serverParams.initializationOptions->deepcopy(),
1745 customNotificationHandlers: serverParams.customNotificationHandlers->deepcopy(),
1746 customRequestHandlers: serverParams.customRequestHandlers->deepcopy(),
1747 processDiagHandler: serverParams.processDiagHandler,
1748 features: serverParams.features->deepcopy(),
1756 rootSearchFiles: serverParams.rootSearch->deepcopy(),
1757 runIfSearchFiles: serverParams.runIfSearch->deepcopy(),
1758 runUnlessSearchFiles: serverParams.runUnlessSearch->deepcopy(),
1759 omniCompletePending: false,
1760 completionTriggerChars: [],
1763 typeHierFilePopup: -1,
1764 workspaceSymbolPopup: -1,
1765 workspaceSymbolQuery: '',
1766 peekSymbolPopup: -1,
1767 peekSymbolFilePopup: -1,
1768 callHierarchyType: '',
1770 workspaceConfig: serverParams.workspaceConfig->deepcopy(),
1772 debug: serverParams.debug,
1773 traceLevel: serverParams.traceLevel
1775 lspserver.logfile = $'lsp-{lspserver.name}.log'
1776 lspserver.errfile = $'lsp-{lspserver.name}.err'
1778 # Add the LSP server functions
1780 startServer: function(StartServer, [lspserver]),
1781 initServer: function(InitServer, [lspserver]),
1782 stopServer: function(StopServer, [lspserver]),
1783 shutdownServer: function(ShutdownServer, [lspserver]),
1784 exitServer: function(ExitServer, [lspserver]),
1785 setTrace: function(SetTrace, [lspserver]),
1786 traceLog: function(TraceLog, [lspserver]),
1787 errorLog: function(ErrorLog, [lspserver]),
1788 nextReqID: function(NextReqID, [lspserver]),
1789 createRequest: function(CreateRequest, [lspserver]),
1790 createResponse: function(CreateResponse, [lspserver]),
1791 sendResponse: function(SendResponse, [lspserver]),
1792 sendMessage: function(SendMessage, [lspserver]),
1793 sendNotification: function(SendNotification, [lspserver]),
1794 rpc: function(Rpc, [lspserver]),
1795 rpc_a: function(AsyncRpc, [lspserver]),
1796 waitForResponse: function(WaitForResponse, [lspserver]),
1797 processReply: function(handlers.ProcessReply, [lspserver]),
1798 processNotif: function(handlers.ProcessNotif, [lspserver]),
1799 processRequest: function(handlers.ProcessRequest, [lspserver]),
1800 processMessages: function(handlers.ProcessMessages, [lspserver]),
1801 encodePosition: function(offset.EncodePosition, [lspserver]),
1802 decodePosition: function(offset.DecodePosition, [lspserver]),
1803 encodeRange: function(offset.EncodeRange, [lspserver]),
1804 decodeRange: function(offset.DecodeRange, [lspserver]),
1805 encodeLocation: function(offset.EncodeLocation, [lspserver]),
1806 decodeLocation: function(offset.DecodeLocation, [lspserver]),
1807 getPosition: function(GetPosition, [lspserver]),
1808 getTextDocPosition: function(GetTextDocPosition, [lspserver]),
1809 textdocDidOpen: function(TextdocDidOpen, [lspserver]),
1810 textdocDidClose: function(TextdocDidClose, [lspserver]),
1811 textdocDidChange: function(TextdocDidChange, [lspserver]),
1812 sendInitializedNotif: function(SendInitializedNotif, [lspserver]),
1813 sendWorkspaceConfig: function(SendWorkspaceConfig, [lspserver]),
1814 getCompletion: function(GetCompletion, [lspserver]),
1815 resolveCompletion: function(ResolveCompletion, [lspserver]),
1816 gotoDefinition: function(GotoDefinition, [lspserver]),
1817 gotoDeclaration: function(GotoDeclaration, [lspserver]),
1818 gotoTypeDef: function(GotoTypeDef, [lspserver]),
1819 gotoImplementation: function(GotoImplementation, [lspserver]),
1820 tagFunc: function(TagFunc, [lspserver]),
1821 switchSourceHeader: function(SwitchSourceHeader, [lspserver]),
1822 showSignature: function(ShowSignature, [lspserver]),
1823 didSaveFile: function(DidSaveFile, [lspserver]),
1824 hover: function(ShowHoverInfo, [lspserver]),
1825 showReferences: function(ShowReferences, [lspserver]),
1826 docHighlight: function(DocHighlight, [lspserver]),
1827 getDocSymbols: function(GetDocSymbols, [lspserver]),
1828 textDocFormat: function(TextDocFormat, [lspserver]),
1829 prepareCallHierarchy: function(PrepareCallHierarchy, [lspserver]),
1830 incomingCalls: function(IncomingCalls, [lspserver]),
1831 getIncomingCalls: function(GetIncomingCalls, [lspserver]),
1832 outgoingCalls: function(OutgoingCalls, [lspserver]),
1833 getOutgoingCalls: function(GetOutgoingCalls, [lspserver]),
1834 inlayHintsShow: function(InlayHintsShow, [lspserver]),
1835 typeHierarchy: function(TypeHiearchy, [lspserver]),
1836 renameSymbol: function(RenameSymbol, [lspserver]),
1837 codeAction: function(CodeAction, [lspserver]),
1838 codeLens: function(CodeLens, [lspserver]),
1839 resolveCodeLens: function(ResolveCodeLens, [lspserver]),
1840 workspaceQuery: function(WorkspaceQuerySymbols, [lspserver]),
1841 addWorkspaceFolder: function(AddWorkspaceFolder, [lspserver]),
1842 removeWorkspaceFolder: function(RemoveWorkspaceFolder, [lspserver]),
1843 selectionRange: function(SelectionRange, [lspserver]),
1844 selectionExpand: function(SelectionExpand, [lspserver]),
1845 selectionShrink: function(SelectionShrink, [lspserver]),
1846 foldRange: function(FoldRange, [lspserver]),
1847 executeCommand: function(ExecuteCommand, [lspserver]),
1848 workspaceConfigGet: function(WorkspaceConfigGet, [lspserver]),
1849 getCapabilities: function(GetCapabilities, [lspserver]),
1850 getInitializeRequest: function(GetInitializeRequest, [lspserver]),
1851 addMessage: function(AddMessage, [lspserver]),
1852 getMessages: function(GetMessages, [lspserver])
1858 # vim: tabstop=8 shiftwidth=2 softtabstop=2