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
32 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Received {msg->string()}')
35 lspserver.processMessages()
38 # LSP server error output handler
39 def Error_cb(lspserver: dict<any>, chan: channel, emsg: string): void
40 lspserver.errorLog(emsg)
43 # LSP server exit callback
44 def Exit_cb(lspserver: dict<any>, job: job, status: number): void
45 util.WarnMsg($'{strftime("%m/%d/%y %T")}: LSP server ({lspserver.name}) exited with status {status}')
46 lspserver.running = false
47 lspserver.ready = false
48 lspserver.requests = {}
53 def StartServer(lspserver: dict<any>, bnr: number): number
55 util.WarnMsg($'LSP server "{lspserver.name}" is already running')
59 var cmd = [lspserver.path]
60 cmd->extend(lspserver.args)
62 var opts = {in_mode: 'lsp',
66 out_cb: function(Output_cb, [lspserver]),
67 err_cb: function(Error_cb, [lspserver]),
68 exit_cb: function(Exit_cb, [lspserver])}
73 lspserver.requests = {}
74 lspserver.omniCompletePending = false
75 lspserver.completionLazyDoc = false
76 lspserver.completionTriggerChars = []
77 lspserver.signaturePopup = -1
79 var job = cmd->job_start(opts)
80 if job->job_status() == 'fail'
81 util.ErrMsg($'Failed to start LSP server {lspserver.path}')
85 # wait a little for the LSP server to start
89 lspserver.running = true
91 lspserver.initServer(bnr)
96 # process the "initialize" method reply from the LSP server
97 # Result: InitializeResult
98 def ServerInitReply(lspserver: dict<any>, initResult: dict<any>): void
99 if initResult->empty()
103 var caps: dict<any> = initResult.capabilities
104 lspserver.caps = caps
106 for [key, val] in initResult->items()
107 if key == 'capabilities'
111 lspserver.caps[$'~additionalInitResult_{key}'] = val
114 capabilities.ProcessServerCaps(lspserver, caps)
116 if caps->has_key('completionProvider')
117 if opt.lspOptions.autoComplete
118 lspserver.completionTriggerChars =
119 caps.completionProvider->get('triggerCharacters', [])
121 lspserver.completionLazyDoc =
122 caps.completionProvider->get('resolveProvider', false)
125 # send a "initialized" notification to server
126 lspserver.sendInitializedNotif()
127 # send any workspace configuration (optional)
128 if !lspserver.workspaceConfig->empty()
129 lspserver.sendWorkspaceConfig()
131 lspserver.ready = true
132 if exists($'#User#LspServerReady{lspserver.name}')
133 exe $'doautocmd <nomodeline> User LspServerReady{lspserver.name}'
135 # Used internally, and shouldn't be used by users
136 if exists($'#User#LspServerReady_{lspserver.id}')
137 exe $'doautocmd <nomodeline> User LspServerReady_{lspserver.id}'
140 # set the server debug trace level
141 if lspserver.traceLevel != 'off'
142 lspserver.setTrace(lspserver.traceLevel)
145 # if the outline window is opened, then request the symbols for the current
147 if bufwinid('LSP-Outline') != -1
148 lspserver.getDocSymbols(@%, true)
151 # Update the inlay hints (if enabled)
152 if opt.lspOptions.showInlayHints && (lspserver.isInlayHintProvider
153 || lspserver.isClangdInlayHintsProvider)
154 inlayhints.LspInlayHintsUpdateNow(bufnr())
158 # Request: "initialize"
159 # Param: InitializeParams
160 def InitServer(lspserver: dict<any>, bnr: number)
161 # interface 'InitializeParams'
162 var initparams: dict<any> = {}
163 initparams.processId = getpid()
164 initparams.clientInfo = {
166 version: v:versionlong->string(),
169 # Compute the rootpath (based on the directory of the buffer)
171 var rootSearchFiles = lspserver.rootSearchFiles
172 var bufDir = bnr->bufname()->fnamemodify(':p:h')
173 if !rootSearchFiles->empty()
174 rootPath = util.FindNearestRootDir(bufDir, rootSearchFiles)
179 # bufDir is within cwd
180 var bufDirPrefix = bufDir[0 : cwd->strcharlen() - 1]
182 ? bufDirPrefix ==? cwd
183 : bufDirPrefix == cwd
190 lspserver.workspaceFolders = [rootPath]
192 var rootUri = util.LspFileToUri(rootPath)
193 initparams.rootPath = rootPath
194 initparams.rootUri = rootUri
195 initparams.workspaceFolders = [{
196 name: rootPath->fnamemodify(':t'),
200 initparams.trace = 'off'
201 initparams.capabilities = capabilities.GetClientCaps()
202 if !lspserver.initializationOptions->empty()
203 initparams.initializationOptions = lspserver.initializationOptions
205 initparams.initializationOptions = {}
208 lspserver.rpcInitializeRequest = initparams
210 lspserver.rpc_a('initialize', initparams, ServerInitReply)
213 # Send a "initialized" notification to the language server
214 def SendInitializedNotif(lspserver: dict<any>)
215 # Notification: 'initialized'
216 # Params: InitializedParams
217 lspserver.sendNotification('initialized')
222 def ShutdownServer(lspserver: dict<any>): void
223 lspserver.rpc('shutdown', {})
226 # Send a 'exit' notification to the language server
227 def ExitServer(lspserver: dict<any>): void
228 # Notification: 'exit'
230 lspserver.sendNotification('exit')
234 def StopServer(lspserver: dict<any>): number
235 if !lspserver.running
236 util.WarnMsg($'LSP server {lspserver.name} is not running')
240 # Send the shutdown request to the server
241 lspserver.shutdownServer()
243 # Notify the server to exit
244 lspserver.exitServer()
246 # Wait for the server to process the exit notification and exit for a
247 # maximum of 2 seconds.
248 var maxCount: number = 1000
249 while lspserver.job->job_status() == 'run' && maxCount > 0
254 if lspserver.job->job_status() == 'run'
255 lspserver.job->job_stop()
257 lspserver.running = false
258 lspserver.ready = false
259 lspserver.requests = {}
263 # Set the language server trace level using the '$/setTrace' notification.
264 # Supported values for "traceVal" are "off", "messages" and "verbose".
265 def SetTrace(lspserver: dict<any>, traceVal: string)
266 # Notification: '$/setTrace'
267 # Params: SetTraceParams
268 var params = {value: traceVal}
269 lspserver.sendNotification('$/setTrace', params)
272 # Log a debug message to the LSP server debug file
273 def TraceLog(lspserver: dict<any>, msg: string)
275 util.TraceLog(lspserver.logfile, false, msg)
279 # Log an error message to the LSP server error file
280 def ErrorLog(lspserver: dict<any>, errmsg: string)
282 util.TraceLog(lspserver.errfile, true, errmsg)
286 # Return the next id for a LSP server request message
287 def NextReqID(lspserver: dict<any>): number
288 var id = lspserver.nextID
289 lspserver.nextID = id + 1
293 # create a LSP server request message
294 def CreateRequest(lspserver: dict<any>, method: string): dict<any>
297 id: lspserver.nextReqID(),
302 # Save the request, so that the corresponding response can be processed
303 lspserver.requests->extend({[req.id->string()]: req})
308 # create a LSP server response message
309 def CreateResponse(lspserver: dict<any>, req_id: number): dict<any>
317 # create a LSP server notification message
318 def CreateNotification(lspserver: dict<any>, notif: string): dict<any>
328 # send a response message to the server
329 def SendResponse(lspserver: dict<any>, request: dict<any>, result: any, error: dict<any>)
330 if (request.id->type() == v:t_string
331 && (request.id->trim() =~ '[^[:digit:]]\+'
332 || request.id->trim()->empty()))
333 || (request.id->type() != v:t_string && request.id->type() != v:t_number)
334 util.ErrMsg('request.id of response to LSP server is not a correct number')
337 var resp: dict<any> = lspserver.createResponse(
338 request.id->type() == v:t_string ? request.id->str2nr() : request.id)
340 resp->extend({result: result})
342 resp->extend({error: error})
344 lspserver.sendMessage(resp)
347 # Send a request message to LSP server
348 def SendMessage(lspserver: dict<any>, content: dict<any>): void
349 var job = lspserver.job
350 if job->job_status() != 'run'
351 # LSP server has exited
354 job->ch_sendexpr(content)
355 if content->has_key('id')
357 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Sent {content->string()}')
362 # Send a notification message to the language server
363 def SendNotification(lspserver: dict<any>, method: string, params: any = {})
364 var notif: dict<any> = CreateNotification(lspserver, method)
365 notif.params->extend(params)
366 lspserver.sendMessage(notif)
369 # Translate an LSP error code into a readable string
370 def LspGetErrorMessage(errcode: number): string
372 -32001: 'UnknownErrorCode',
373 -32002: 'ServerNotInitialized',
374 -32600: 'InvalidRequest',
375 -32601: 'MethodNotFound',
376 -32602: 'InvalidParams',
377 -32603: 'InternalError',
378 -32700: 'ParseError',
379 -32800: 'RequestCancelled',
380 -32801: 'ContentModified',
381 -32802: 'ServerCancelled',
382 -32803: 'RequestFailed'
385 return errmap->get(errcode, errcode->string())
388 # Process a LSP server response error and display an error message.
389 def ProcessLspServerError(method: string, responseError: dict<any>)
391 var emsg: string = responseError.message
392 emsg ..= $', error = {LspGetErrorMessage(responseError.code)}'
393 if responseError->has_key('data')
394 emsg ..= $', data = {responseError.data->string()}'
396 util.ErrMsg($'request {method} failed ({emsg})')
399 # Send a sync RPC request message to the LSP server and return the received
400 # reply. In case of an error, an empty Dict is returned.
401 def Rpc(lspserver: dict<any>, method: string, params: any, handleError: bool = true): dict<any>
407 var job = lspserver.job
408 if job->job_status() != 'run'
409 # LSP server has exited
414 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Sent {req->string()}')
417 # Do the synchronous RPC call
418 var reply = job->ch_evalexpr(req)
421 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Received {reply->string()}')
424 if reply->has_key('result')
429 if reply->has_key('error') && handleError
431 ProcessLspServerError(method, reply.error)
437 # LSP server asynchronous RPC callback
438 def AsyncRpcCb(lspserver: dict<any>, method: string, RpcCb: func, chan: channel, reply: dict<any>)
440 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Received {reply->string()}')
447 if reply->has_key('error')
449 ProcessLspServerError(method, reply.error)
453 if !reply->has_key('result')
454 util.ErrMsg($'request {method} failed (no result)')
458 RpcCb(lspserver, reply.result)
461 # Send a async RPC request message to the LSP server with a callback function.
462 # Returns the LSP message id. This id can be used to cancel the RPC request
463 # (if needed). Returns -1 on error.
464 def AsyncRpc(lspserver: dict<any>, method: string, params: any, Cbfunc: func): number
470 var job = lspserver.job
471 if job->job_status() != 'run'
472 # LSP server has exited
477 lspserver.traceLog($'{strftime("%m/%d/%y %T")}: Sent {req->string()}')
480 # Do the asynchronous RPC call
481 var Fn = function('AsyncRpcCb', [lspserver, method, Cbfunc])
484 if get(g:, 'LSPTest')
485 # When running LSP tests, make this a synchronous RPC call
486 reply = Rpc(lspserver, method, params)
487 Fn(test_null_channel(), reply)
489 # Otherwise, make an asynchronous RPC call
490 reply = job->ch_sendexpr(req, {callback: Fn})
499 # Wait for a response message from the LSP server for the request "req"
500 # Waits for a maximum of 5 seconds
501 def WaitForResponse(lspserver: dict<any>, req: dict<any>)
502 var maxCount: number = 2500
503 var key: string = req.id->string()
505 while lspserver.requests->has_key(key) && maxCount > 0
511 # Retrieve the Workspace configuration asked by the server.
512 # Request: workspace/configuration
513 def WorkspaceConfigGet(lspserver: dict<any>, configItem: dict<any>): dict<any>
514 if lspserver.workspaceConfig->empty()
517 if !configItem->has_key('section') || configItem.section->empty()
518 return lspserver.workspaceConfig
520 var config: dict<any> = lspserver.workspaceConfig
521 for part in configItem.section->split('\.')
522 if !config->has_key(part)
525 config = config[part]
530 # Send a "workspace/didChangeConfiguration" notification to the language
532 def SendWorkspaceConfig(lspserver: dict<any>)
533 # Params: DidChangeConfigurationParams
534 var params = {settings: lspserver.workspaceConfig}
535 lspserver.sendNotification('workspace/didChangeConfiguration', params)
538 # Send a file/document opened notification to the language server.
539 def TextdocDidOpen(lspserver: dict<any>, bnr: number, ftype: string): void
540 # Notification: 'textDocument/didOpen'
541 # Params: DidOpenTextDocumentParams
544 uri: util.LspBufnrToUri(bnr),
547 text: bnr->getbufline(1, '$')->join("\n") .. "\n"
550 lspserver.sendNotification('textDocument/didOpen', params)
553 # Send a file/document closed notification to the language server.
554 def TextdocDidClose(lspserver: dict<any>, bnr: number): void
555 # Notification: 'textDocument/didClose'
556 # Params: DidCloseTextDocumentParams
559 uri: util.LspBufnrToUri(bnr)
562 lspserver.sendNotification('textDocument/didClose', params)
565 # Send a file/document change notification to the language server.
566 # Params: DidChangeTextDocumentParams
567 def TextdocDidChange(lspserver: dict<any>, bnr: number, start: number,
568 end: number, added: number,
569 changes: list<dict<number>>): void
570 # Notification: 'textDocument/didChange'
571 # Params: DidChangeTextDocumentParams
573 var changeset: list<dict<any>>
575 ##### FIXME: Sending specific buffer changes to the LSP server doesn't
576 ##### work properly as the computed line range numbers is not correct.
577 ##### For now, send the entire buffer content to LSP server.
579 # for change in changes
581 # var start_lnum: number
582 # var end_lnum: number
583 # var start_col: number
584 # var end_col: number
585 # if change.added == 0
587 # start_lnum = change.lnum - 1
588 # end_lnum = change.end - 1
589 # lines = getbufline(bnr, change.lnum, change.end - 1)->join("\n") .. "\n"
592 # elseif change.added > 0
594 # start_lnum = change.lnum - 1
595 # end_lnum = change.lnum - 1
598 # lines = getbufline(bnr, change.lnum, change.lnum + change.added - 1)->join("\n") .. "\n"
601 # start_lnum = change.lnum - 1
602 # end_lnum = change.lnum + (-change.added) - 1
607 # var range: dict<dict<number>> = {'start': {'line': start_lnum, 'character': start_col}, 'end': {'line': end_lnum, 'character': end_col}}
608 # changeset->add({'range': range, 'text': lines})
611 changeset->add({text: bnr->getbufline(1, '$')->join("\n") .. "\n"})
614 uri: util.LspBufnrToUri(bnr),
615 # Use Vim 'changedtick' as the LSP document version number
616 version: bnr->getbufvar('changedtick')
618 contentChanges: changeset
620 lspserver.sendNotification('textDocument/didChange', params)
623 # Return the current cursor position as a LSP position.
624 # find_ident will search for a identifier in front of the cursor, just like
625 # CTRL-] and c_CTRL-R_CTRL-W does.
627 # LSP line and column numbers start from zero, whereas Vim line and column
628 # numbers start from one. The LSP column number is the character index in the
629 # line and not the byte index in the line.
630 def GetPosition(lspserver: dict<any>, find_ident: bool): dict<number>
631 var lnum: number = line('.') - 1
632 var col: number = charcol('.') - 1
633 var line = getline('.')
636 # 1. skip to start of identifier
637 while line[col] != '' && line[col] !~ '\k'
641 # 2. back up to start of identifier
642 while col > 0 && line[col - 1] =~ '\k'
647 # Compute character index counting composing characters as separate
649 var pos = {line: lnum, character: util.GetCharIdxWithCompChar(line, col)}
650 lspserver.encodePosition(bufnr(), pos)
655 # Return the current file name and current cursor position as a LSP
656 # TextDocumentPositionParams structure
657 def GetTextDocPosition(lspserver: dict<any>, find_ident: bool): dict<dict<any>>
658 # interface TextDocumentIdentifier
660 return {textDocument: {uri: util.LspFileToUri(@%)},
661 position: lspserver.getPosition(find_ident)}
664 # Get a list of completion items.
665 # Request: "textDocument/completion"
666 # Param: CompletionParams
667 def GetCompletion(lspserver: dict<any>, triggerKind_arg: number, triggerChar: string): void
668 # Check whether LSP server supports completion
669 if !lspserver.isCompletionProvider
670 util.ErrMsg('LSP server does not support completion')
679 # interface CompletionParams
680 # interface TextDocumentPositionParams
681 var params = lspserver.getTextDocPosition(false)
682 # interface CompletionContext
683 params.context = {triggerKind: triggerKind_arg, triggerCharacter: triggerChar}
685 lspserver.rpc_a('textDocument/completion', params,
686 completion.CompletionReply)
689 # Get lazy properties for a completion item.
690 # Request: "completionItem/resolve"
691 # Param: CompletionItem
692 def ResolveCompletion(lspserver: dict<any>, item: dict<any>): void
693 # Check whether LSP server supports completion item resolve
694 if !lspserver.isCompletionResolveProvider
695 util.ErrMsg('LSP server does not support completion item resolve')
699 # interface CompletionItem
700 lspserver.rpc_a('completionItem/resolve', item,
701 completion.CompletionResolveReply)
704 # Jump to or peek a symbol location.
706 # Send 'msg' to a LSP server and process the reply. 'msg' is one of the
708 # textDocument/definition
709 # textDocument/declaration
710 # textDocument/typeDefinition
711 # textDocument/implementation
713 # Process the LSP server reply and jump to the symbol location. Before
714 # jumping to the symbol location, save the current cursor position in the tag
717 # If 'peekSymbol' is true, then display the symbol location in the preview
718 # window but don't jump to the symbol location.
720 # Result: Location | Location[] | LocationLink[] | null
721 def GotoSymbolLoc(lspserver: dict<any>, msg: string, peekSymbol: bool,
722 cmdmods: string, count: number)
723 var reply = lspserver.rpc(msg, lspserver.getTextDocPosition(true), false)
724 if reply->empty() || reply.result->empty()
726 if msg == 'textDocument/declaration'
727 emsg = 'symbol declaration is not found'
728 elseif msg == 'textDocument/typeDefinition'
729 emsg = 'symbol type definition is not found'
730 elseif msg == 'textDocument/implementation'
731 emsg = 'symbol implementation is not found'
733 emsg = 'symbol definition is not found'
740 var result = reply.result
741 var location: dict<any>
742 if result->type() == v:t_list
744 # When there are multiple symbol locations, and a specific one isn't
745 # requested with 'count', display the locations in a location list.
747 var title: string = ''
748 if msg == 'textDocument/declaration'
749 title = 'Declarations'
750 elseif msg == 'textDocument/typeDefinition'
751 title = 'Type Definitions'
752 elseif msg == 'textDocument/implementation'
753 title = 'Implementations'
755 title = 'Definitions'
758 if lspserver.needOffsetEncoding
759 # Decode the position encoding in all the symbol locations
760 result->map((_, loc) => {
761 lspserver.decodeLocation(loc)
766 symbol.ShowLocations(lspserver, result, peekSymbol, title)
771 # Select the location requested in 'count'
773 if idx >= result->len()
774 idx = result->len() - 1
776 location = result[idx]
780 lspserver.decodeLocation(location)
782 symbol.GotoSymbol(lspserver, location, peekSymbol, cmdmods)
785 # Request: "textDocument/definition"
786 # Param: DefinitionParams
787 def GotoDefinition(lspserver: dict<any>, peek: bool, cmdmods: string, count: number)
788 # Check whether LSP server supports jumping to a definition
789 if !lspserver.isDefinitionProvider
790 util.ErrMsg('Jumping to a symbol definition is not supported')
794 # interface DefinitionParams
795 # interface TextDocumentPositionParams
796 GotoSymbolLoc(lspserver, 'textDocument/definition', peek, cmdmods, count)
799 # Request: "textDocument/declaration"
800 # Param: DeclarationParams
801 def GotoDeclaration(lspserver: dict<any>, peek: bool, cmdmods: string, count: number)
802 # Check whether LSP server supports jumping to a declaration
803 if !lspserver.isDeclarationProvider
804 util.ErrMsg('Jumping to a symbol declaration is not supported')
808 # interface DeclarationParams
809 # interface TextDocumentPositionParams
810 GotoSymbolLoc(lspserver, 'textDocument/declaration', peek, cmdmods, count)
813 # Request: "textDocument/typeDefinition"
814 # Param: TypeDefinitionParams
815 def GotoTypeDef(lspserver: dict<any>, peek: bool, cmdmods: string, count: number)
816 # Check whether LSP server supports jumping to a type definition
817 if !lspserver.isTypeDefinitionProvider
818 util.ErrMsg('Jumping to a symbol type definition is not supported')
822 # interface TypeDefinitionParams
823 # interface TextDocumentPositionParams
824 GotoSymbolLoc(lspserver, 'textDocument/typeDefinition', peek, cmdmods, count)
827 # Request: "textDocument/implementation"
828 # Param: ImplementationParams
829 def GotoImplementation(lspserver: dict<any>, peek: bool, cmdmods: string, count: number)
830 # Check whether LSP server supports jumping to a implementation
831 if !lspserver.isImplementationProvider
832 util.ErrMsg('Jumping to a symbol implementation is not supported')
836 # interface ImplementationParams
837 # interface TextDocumentPositionParams
838 GotoSymbolLoc(lspserver, 'textDocument/implementation', peek, cmdmods, count)
841 # Request: "textDocument/switchSourceHeader"
842 # Param: TextDocumentIdentifier
843 # Clangd specific extension
844 def SwitchSourceHeader(lspserver: dict<any>)
846 uri: util.LspFileToUri(@%)
848 var reply = lspserver.rpc('textDocument/switchSourceHeader', param)
849 if reply->empty() || reply.result->empty()
850 util.WarnMsg('Source/Header file is not found')
854 # process the 'textDocument/switchSourceHeader' reply from the LSP server
856 var fname = util.LspUriToFile(reply.result)
857 # TODO: Add support for cmd modifiers
858 if (&modified && !&hidden) || &buftype != ''
859 # if the current buffer has unsaved changes and 'hidden' is not set,
860 # or if the current buffer is a special buffer, then ask to save changes
861 exe $'confirm edit {fname}'
867 # get symbol signature help.
868 # Request: "textDocument/signatureHelp"
869 # Param: SignatureHelpParams
870 def ShowSignature(lspserver: dict<any>): void
871 # Check whether LSP server supports signature help
872 if !lspserver.isSignatureHelpProvider
873 util.ErrMsg('LSP server does not support signature help')
877 # interface SignatureHelpParams
878 # interface TextDocumentPositionParams
879 var params = lspserver.getTextDocPosition(false)
880 lspserver.rpc_a('textDocument/signatureHelp', params,
881 signature.SignatureHelp)
884 # Send a file/document saved notification to the language server
885 def DidSaveFile(lspserver: dict<any>, bnr: number): void
886 # Check whether the LSP server supports the didSave notification
887 if !lspserver.supportsDidSave
888 # LSP server doesn't support text document synchronization
892 # Notification: 'textDocument/didSave'
893 # Params: DidSaveTextDocumentParams
894 var params = {textDocument: {uri: util.LspBufnrToUri(bnr)}}
895 # FIXME: Need to set "params.text" when
896 # 'lspserver.caps.textDocumentSync.save.includeText' is set to true.
897 lspserver.sendNotification('textDocument/didSave', params)
900 # get the hover information
901 # Request: "textDocument/hover"
903 def ShowHoverInfo(lspserver: dict<any>, cmdmods: string): void
904 # Check whether LSP server supports getting hover information.
905 # caps->hoverProvider can be a "boolean" or "HoverOptions"
906 if !lspserver.isHoverProvider
910 # interface HoverParams
911 # interface TextDocumentPositionParams
912 var params = lspserver.getTextDocPosition(false)
913 lspserver.rpc_a('textDocument/hover', params, (_, reply) => {
914 hover.HoverReply(lspserver, reply, cmdmods)
918 # Request: "textDocument/references"
919 # Param: ReferenceParams
920 def ShowReferences(lspserver: dict<any>, peek: bool): void
921 # Check whether LSP server supports getting reference information
922 if !lspserver.isReferencesProvider
923 util.ErrMsg('LSP server does not support showing references')
927 # interface ReferenceParams
928 # interface TextDocumentPositionParams
930 param = lspserver.getTextDocPosition(true)
931 param.context = {includeDeclaration: true}
932 var reply = lspserver.rpc('textDocument/references', param)
934 # Result: Location[] | null
935 if reply->empty() || reply.result->empty()
936 util.WarnMsg('No references found')
940 if lspserver.needOffsetEncoding
941 # Decode the position encoding in all the reference locations
942 reply.result->map((_, loc) => {
943 lspserver.decodeLocation(loc)
948 symbol.ShowLocations(lspserver, reply.result, peek, 'Symbol References')
951 # process the 'textDocument/documentHighlight' reply from the LSP server
952 # Result: DocumentHighlight[] | null
953 def DocHighlightReply(lspserver: dict<any>, docHighlightReply: any,
954 bnr: number, cmdmods: string): void
955 if docHighlightReply->empty()
956 if cmdmods !~ 'silent'
957 util.WarnMsg($'No highlight for the current position')
962 for docHL in docHighlightReply
963 lspserver.decodeRange(bnr, docHL.range)
964 var kind: number = docHL->get('kind', 1)
968 propName = 'LspReadRef'
971 propName = 'LspWriteRef'
974 propName = 'LspTextRef'
977 var docHL_range = docHL.range
978 var docHL_start = docHL_range.start
979 var docHL_end = docHL_range.end
980 prop_add(docHL_start.line + 1,
981 util.GetLineByteFromPos(bnr, docHL_start) + 1,
982 {end_lnum: docHL_end.line + 1,
983 end_col: util.GetLineByteFromPos(bnr, docHL_end) + 1,
986 catch /E966\|E964/ # Invalid lnum | Invalid col
987 # Highlight replies arrive asynchronously and the document might have
988 # been modified in the mean time. As the reply is stale, ignore invalid
989 # line number and column number errors.
994 # Request: "textDocument/documentHighlight"
995 # Param: DocumentHighlightParams
996 def DocHighlight(lspserver: dict<any>, cmdmods: string): void
997 # Check whether LSP server supports getting highlight information
998 if !lspserver.isDocumentHighlightProvider
999 util.ErrMsg('LSP server does not support document highlight')
1003 # interface DocumentHighlightParams
1004 # interface TextDocumentPositionParams
1005 var params = lspserver.getTextDocPosition(false)
1006 lspserver.rpc_a('textDocument/documentHighlight', params, (_, reply) => {
1007 DocHighlightReply(lspserver, reply, bufnr(), cmdmods)
1011 # Request: "textDocument/documentSymbol"
1012 # Param: DocumentSymbolParams
1013 def GetDocSymbols(lspserver: dict<any>, fname: string, showOutline: bool): void
1014 # Check whether LSP server supports getting document symbol information
1015 if !lspserver.isDocumentSymbolProvider
1016 util.ErrMsg('LSP server does not support getting list of symbols')
1020 # interface DocumentSymbolParams
1021 # interface TextDocumentIdentifier
1022 var params = {textDocument: {uri: util.LspFileToUri(fname)}}
1023 lspserver.rpc_a('textDocument/documentSymbol', params, (_, reply) => {
1025 symbol.DocSymbolOutline(lspserver, reply, fname)
1027 symbol.DocSymbolPopup(lspserver, reply, fname)
1032 # Request: "textDocument/formatting"
1033 # Param: DocumentFormattingParams
1035 # Request: "textDocument/rangeFormatting"
1036 # Param: DocumentRangeFormattingParams
1037 def TextDocFormat(lspserver: dict<any>, fname: string, rangeFormat: bool,
1038 start_lnum: number, end_lnum: number)
1039 # Check whether LSP server supports formatting documents
1040 if !lspserver.isDocumentFormattingProvider
1041 util.ErrMsg('LSP server does not support formatting documents')
1047 cmd = 'textDocument/rangeFormatting'
1049 cmd = 'textDocument/formatting'
1052 # interface DocumentFormattingParams
1053 # interface TextDocumentIdentifier
1054 # interface FormattingOptions
1055 var fmtopts: dict<any> = {
1056 tabSize: shiftwidth(),
1057 insertSpaces: &expandtab ? true : false,
1061 uri: util.LspFileToUri(fname)
1067 var r: dict<dict<number>> = {
1068 start: {line: start_lnum - 1, character: 0},
1069 end: {line: end_lnum - 1, character: charcol([end_lnum, '$']) - 1}}
1073 var reply = lspserver.rpc(cmd, param)
1075 # result: TextEdit[] | null
1077 if reply->empty() || reply.result->empty()
1082 var bnr: number = fname->bufnr()
1084 # file is already removed
1088 if lspserver.needOffsetEncoding
1089 # Decode the position encoding in all the reference locations
1090 reply.result->map((_, textEdit) => {
1091 lspserver.decodeRange(bnr, textEdit.range)
1096 # interface TextEdit
1097 # Apply each of the text edit operations
1098 var save_cursor: list<number> = getcurpos()
1099 textedit.ApplyTextEdits(bnr, reply.result)
1100 save_cursor->setpos('.')
1103 # Request: "textDocument/prepareCallHierarchy"
1104 def PrepareCallHierarchy(lspserver: dict<any>): dict<any>
1105 # interface CallHierarchyPrepareParams
1106 # interface TextDocumentPositionParams
1107 var param: dict<any>
1108 param = lspserver.getTextDocPosition(false)
1109 var reply = lspserver.rpc('textDocument/prepareCallHierarchy', param)
1110 if reply->empty() || reply.result->empty()
1114 # Result: CallHierarchyItem[] | null
1115 var choice: number = 1
1116 if reply.result->len() > 1
1117 var items: list<string> = ['Select a Call Hierarchy Item:']
1118 for i in reply.result->len()->range()
1119 items->add(printf("%d. %s", i + 1, reply.result[i].name))
1121 choice = items->inputlist()
1122 if choice < 1 || choice > items->len()
1127 return reply.result[choice - 1]
1130 # Request: "callHierarchy/incomingCalls"
1131 def IncomingCalls(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.IncomingCalls(lspserver)
1141 def GetIncomingCalls(lspserver: dict<any>, item_arg: dict<any>): any
1142 # Request: "callHierarchy/incomingCalls"
1143 # Param: CallHierarchyIncomingCallsParams
1147 var reply = lspserver.rpc('callHierarchy/incomingCalls', param)
1152 if lspserver.needOffsetEncoding
1153 # Decode the position encoding in all the incoming call locations
1154 var bnr = util.LspUriToBufnr(item_arg.uri)
1155 reply.result->map((_, hierItem) => {
1156 lspserver.decodeRange(bnr, hierItem.from.range)
1164 # Request: "callHierarchy/outgoingCalls"
1165 def OutgoingCalls(lspserver: dict<any>, fname: string)
1166 # Check whether LSP server supports call hierarchy
1167 if !lspserver.isCallHierarchyProvider
1168 util.ErrMsg('LSP server does not support call hierarchy')
1172 callhier.OutgoingCalls(lspserver)
1175 def GetOutgoingCalls(lspserver: dict<any>, item_arg: dict<any>): any
1176 # Request: "callHierarchy/outgoingCalls"
1177 # Param: CallHierarchyOutgoingCallsParams
1181 var reply = lspserver.rpc('callHierarchy/outgoingCalls', param)
1186 if lspserver.needOffsetEncoding
1187 # Decode the position encoding in all the outgoing call locations
1188 var bnr = util.LspUriToBufnr(item_arg.uri)
1189 reply.result->map((_, hierItem) => {
1190 lspserver.decodeRange(bnr, hierItem.to.range)
1198 # Request: "textDocument/inlayHint"
1200 def InlayHintsShow(lspserver: dict<any>, bnr: number)
1201 # Check whether LSP server supports type hierarchy
1202 if !lspserver.isInlayHintProvider && !lspserver.isClangdInlayHintsProvider
1203 util.ErrMsg('LSP server does not support inlay hint')
1207 var binfo = bnr->getbufinfo()
1211 var lastlnum = binfo[0].linecount
1212 var lastline = bnr->getbufline('$')
1214 if !lastline->empty() && !lastline[0]->empty()
1215 lastcol = lastline[0]->strchars()
1218 textDocument: {uri: util.LspBufnrToUri(bnr)},
1221 start: {line: 0, character: 0},
1222 end: {line: lastlnum - 1, character: lastcol - 1}
1226 lspserver.encodeRange(bnr, param.range)
1229 if lspserver.isClangdInlayHintsProvider
1230 # clangd-style inlay hints
1231 msg = 'clangd/inlayHints'
1233 msg = 'textDocument/inlayHint'
1235 var reply = lspserver.rpc_a(msg, param, (_, reply) => {
1236 inlayhints.InlayHintsReply(lspserver, bnr, reply)
1240 def DecodeTypeHierarchy(lspserver: dict<any>, isSuper: bool, typeHier: dict<any>)
1241 if !lspserver.needOffsetEncoding
1244 var bnr = util.LspUriToBufnr(typeHier.uri)
1245 lspserver.decodeRange(bnr, typeHier.range)
1246 lspserver.decodeRange(bnr, typeHier.selectionRange)
1247 var subType: list<dict<any>>
1249 subType = typeHier->get('parents', [])
1251 subType = typeHier->get('children', [])
1253 if !subType->empty()
1254 # Decode the position encoding in all the type hierarchy items
1255 subType->map((_, typeHierItem) => {
1256 DecodeTypeHierarchy(lspserver, isSuper, typeHierItem)
1262 # Request: "textDocument/typehierarchy"
1263 # Support the clangd version of type hierarchy retrieval method.
1264 # The method described in the LSP 3.17.0 standard is not supported as clangd
1265 # doesn't support that method.
1266 def TypeHierarchy(lspserver: dict<any>, direction: number)
1267 # Check whether LSP server supports type hierarchy
1268 if !lspserver.isTypeHierarchyProvider
1269 util.ErrMsg('LSP server does not support type hierarchy')
1273 # interface TypeHierarchy
1274 # interface TextDocumentPositionParams
1275 var param: dict<any>
1276 param = lspserver.getTextDocPosition(false)
1277 # 0: children, 1: parent, 2: both
1278 param.direction = direction
1280 var reply = lspserver.rpc('textDocument/typeHierarchy', param)
1281 if reply->empty() || reply.result->empty()
1282 util.WarnMsg('No type hierarchy available')
1286 var isSuper = (direction == 1)
1288 DecodeTypeHierarchy(lspserver, isSuper, reply.result)
1290 typehier.ShowTypeHierarchy(lspserver, isSuper, reply.result)
1293 # Decode the ranges in "WorkspaceEdit"
1294 def DecodeWorkspaceEdit(lspserver: dict<any>, workspaceEdit: dict<any>)
1295 if !lspserver.needOffsetEncoding
1298 if workspaceEdit->has_key('changes')
1299 for [uri, changes] in workspaceEdit.changes->items()
1300 var bnr: number = util.LspUriToBufnr(uri)
1304 # Decode the position encoding in all the text edit locations
1305 changes->map((_, textEdit) => {
1306 lspserver.decodeRange(bnr, textEdit.range)
1312 if workspaceEdit->has_key('documentChanges')
1313 for change in workspaceEdit.documentChanges
1314 if !change->has_key('kind')
1315 var bnr: number = util.LspUriToBufnr(change.textDocument.uri)
1319 # Decode the position encoding in all the text edit locations
1320 change.edits->map((_, textEdit) => {
1321 lspserver.decodeRange(bnr, textEdit.range)
1329 # Request: "textDocument/rename"
1330 # Param: RenameParams
1331 def RenameSymbol(lspserver: dict<any>, newName: string)
1332 # Check whether LSP server supports rename operation
1333 if !lspserver.isRenameProvider
1334 util.ErrMsg('LSP server does not support rename operation')
1338 # interface RenameParams
1339 # interface TextDocumentPositionParams
1340 var param: dict<any> = {}
1341 param = lspserver.getTextDocPosition(true)
1342 param.newName = newName
1344 var reply = lspserver.rpc('textDocument/rename', param)
1346 # Result: WorkspaceEdit | null
1347 if reply->empty() || reply.result->empty()
1352 # result: WorkspaceEdit
1353 DecodeWorkspaceEdit(lspserver, reply.result)
1354 textedit.ApplyWorkspaceEdit(reply.result)
1357 # Decode the range in "CodeAction"
1358 def DecodeCodeAction(lspserver: dict<any>, actionList: list<dict<any>>)
1359 if !lspserver.needOffsetEncoding
1362 actionList->map((_, act) => {
1363 if !act->has_key('disabled') && act->has_key('edit')
1364 DecodeWorkspaceEdit(lspserver, act.edit)
1370 # Request: "textDocument/codeAction"
1371 # Param: CodeActionParams
1372 def CodeAction(lspserver: dict<any>, fname_arg: string, line1: number,
1373 line2: number, query: string)
1374 # Check whether LSP server supports code action operation
1375 if !lspserver.isCodeActionProvider
1376 util.ErrMsg('LSP server does not support code action operation')
1380 # interface CodeActionParams
1381 var params: dict<any> = {}
1382 var fname: string = fname_arg->fnamemodify(':p')
1383 var bnr: number = fname_arg->bufnr()
1384 var r: dict<dict<number>> = {
1387 character: line1 == line2 ? util.GetCharIdxWithCompChar(getline('.'), charcol('.') - 1) : 0
1391 character: util.GetCharIdxWithCompChar(getline(line2), charcol([line2, '$']) - 1)
1394 lspserver.encodeRange(bnr, r)
1395 params->extend({textDocument: {uri: util.LspFileToUri(fname)}, range: r})
1396 var d: list<dict<any>> = []
1397 for lnum in range(line1, line2)
1398 var diagsInfo: list<dict<any>> = diag.GetDiagsByLine(bnr, lnum, lspserver)->deepcopy()
1399 if lspserver.needOffsetEncoding
1400 diagsInfo->map((_, di) => {
1401 lspserver.encodeRange(bnr, di.range)
1405 d->extend(diagsInfo)
1407 params->extend({context: {diagnostics: d, triggerKind: 1}})
1409 var reply = lspserver.rpc('textDocument/codeAction', params)
1411 # Result: (Command | CodeAction)[] | null
1412 if reply->empty() || reply.result->empty()
1413 # no action can be performed
1414 util.WarnMsg('No code action is available')
1418 DecodeCodeAction(lspserver, reply.result)
1420 codeaction.ApplyCodeAction(lspserver, reply.result, query)
1423 # Request: "textDocument/codeLens"
1424 # Param: CodeLensParams
1425 def CodeLens(lspserver: dict<any>, fname: string)
1426 # Check whether LSP server supports code lens operation
1427 if !lspserver.isCodeLensProvider
1428 util.ErrMsg('LSP server does not support code lens operation')
1432 var params = {textDocument: {uri: util.LspFileToUri(fname)}}
1433 var reply = lspserver.rpc('textDocument/codeLens', params)
1434 if reply->empty() || reply.result->empty()
1435 util.WarnMsg($'No code lens actions found for the current file')
1439 var bnr = fname->bufnr()
1441 # Decode the position encoding in all the code lens items
1442 if lspserver.needOffsetEncoding
1443 reply.result->map((_, codeLensItem) => {
1444 lspserver.decodeRange(bnr, codeLensItem.range)
1449 codelens.ProcessCodeLens(lspserver, bnr, reply.result)
1452 # Request: "codeLens/resolve"
1454 def ResolveCodeLens(lspserver: dict<any>, bnr: number,
1455 codeLens: dict<any>): dict<any>
1456 if !lspserver.isCodeLensResolveProvider
1460 if lspserver.needOffsetEncoding
1461 lspserver.encodeRange(bnr, codeLens.range)
1464 var reply = lspserver.rpc('codeLens/resolve', codeLens)
1469 var codeLensItem: dict<any> = reply.result
1471 # Decode the position encoding in the code lens item
1472 if lspserver.needOffsetEncoding
1473 lspserver.decodeRange(bnr, codeLensItem.range)
1479 # List project-wide symbols matching query string
1480 # Request: "workspace/symbol"
1481 # Param: WorkspaceSymbolParams
1482 def WorkspaceQuerySymbols(lspserver: dict<any>, query: string, firstCall: bool, cmdmods: string = '')
1483 # Check whether the LSP server supports listing workspace symbols
1484 if !lspserver.isWorkspaceSymbolProvider
1485 util.ErrMsg('LSP server does not support listing workspace symbols')
1489 # Param: WorkspaceSymbolParams
1493 var reply = lspserver.rpc('workspace/symbol', param)
1494 if reply->empty() || reply.result->empty()
1495 util.WarnMsg($'Symbol "{query}" is not found')
1499 var symInfo: list<dict<any>> = reply.result
1501 if lspserver.needOffsetEncoding
1502 # Decode the position encoding in all the symbol locations
1503 symInfo->map((_, sym) => {
1504 if sym->has_key('location')
1505 lspserver.decodeLocation(sym.location)
1511 if firstCall && symInfo->len() == 1
1512 # If there is only one symbol, then jump to the symbol location
1513 var symLoc: dict<any> = symInfo[0]->get('location', {})
1515 symbol.GotoSymbol(lspserver, symLoc, false, cmdmods)
1518 symbol.WorkspaceSymbolPopup(lspserver, query, symInfo, cmdmods)
1522 # Add a workspace folder to the language server.
1523 def AddWorkspaceFolder(lspserver: dict<any>, dirName: string): void
1524 if !lspserver.caps->has_key('workspace')
1525 || !lspserver.caps.workspace->has_key('workspaceFolders')
1526 || !lspserver.caps.workspace.workspaceFolders->has_key('supported')
1527 || !lspserver.caps.workspace.workspaceFolders.supported
1528 util.ErrMsg('LSP server does not support workspace folders')
1532 if lspserver.workspaceFolders->index(dirName) != -1
1533 util.ErrMsg($'{dirName} is already part of this workspace')
1537 # Notification: 'workspace/didChangeWorkspaceFolders'
1538 # Params: DidChangeWorkspaceFoldersParams
1539 var params = {event: {added: [dirName], removed: []}}
1540 lspserver.sendNotification('workspace/didChangeWorkspaceFolders', params)
1542 lspserver.workspaceFolders->add(dirName)
1545 # Remove a workspace folder from the language server.
1546 def RemoveWorkspaceFolder(lspserver: dict<any>, dirName: string): void
1547 if !lspserver.caps->has_key('workspace')
1548 || !lspserver.caps.workspace->has_key('workspaceFolders')
1549 || !lspserver.caps.workspace.workspaceFolders->has_key('supported')
1550 || !lspserver.caps.workspace.workspaceFolders.supported
1551 util.ErrMsg('LSP server does not support workspace folders')
1555 var idx: number = lspserver.workspaceFolders->index(dirName)
1557 util.ErrMsg($'{dirName} is not currently part of this workspace')
1561 # Notification: "workspace/didChangeWorkspaceFolders"
1562 # Param: DidChangeWorkspaceFoldersParams
1563 var params = {event: {added: [], removed: [dirName]}}
1564 lspserver.sendNotification('workspace/didChangeWorkspaceFolders', params)
1566 lspserver.workspaceFolders->remove(idx)
1569 def DecodeSelectionRange(lspserver: dict<any>, bnr: number, selRange: dict<any>)
1570 lspserver.decodeRange(bnr, selRange.range)
1571 if selRange->has_key('parent')
1572 DecodeSelectionRange(lspserver, bnr, selRange.parent)
1576 # select the text around the current cursor location
1577 # Request: "textDocument/selectionRange"
1578 # Param: SelectionRangeParams
1579 def SelectionRange(lspserver: dict<any>, fname: string)
1580 # Check whether LSP server supports selection ranges
1581 if !lspserver.isSelectionRangeProvider
1582 util.ErrMsg('LSP server does not support selection ranges')
1586 # clear the previous selection reply
1587 lspserver.selection = {}
1589 # interface SelectionRangeParams
1590 # interface TextDocumentIdentifier
1593 uri: util.LspFileToUri(fname)
1595 positions: [lspserver.getPosition(false)]
1597 var reply = lspserver.rpc('textDocument/selectionRange', param)
1599 if reply->empty() || reply.result->empty()
1603 # Decode the position encoding in all the selection range items
1604 if lspserver.needOffsetEncoding
1605 var bnr = fname->bufnr()
1606 reply.result->map((_, selItem) => {
1607 DecodeSelectionRange(lspserver, bnr, selItem)
1612 selection.SelectionStart(lspserver, reply.result)
1615 # Expand the previous selection or start a new one
1616 def SelectionExpand(lspserver: dict<any>)
1617 # Check whether LSP server supports selection ranges
1618 if !lspserver.isSelectionRangeProvider
1619 util.ErrMsg('LSP server does not support selection ranges')
1623 selection.SelectionModify(lspserver, true)
1626 # Shrink the previous selection or start a new one
1627 def SelectionShrink(lspserver: dict<any>)
1628 # Check whether LSP server supports selection ranges
1629 if !lspserver.isSelectionRangeProvider
1630 util.ErrMsg('LSP server does not support selection ranges')
1634 selection.SelectionModify(lspserver, false)
1637 # fold the entire document
1638 # Request: "textDocument/foldingRange"
1639 # Param: FoldingRangeParams
1640 def FoldRange(lspserver: dict<any>, fname: string)
1641 # Check whether LSP server supports fold ranges
1642 if !lspserver.isFoldingRangeProvider
1643 util.ErrMsg('LSP server does not support folding')
1647 # interface FoldingRangeParams
1648 # interface TextDocumentIdentifier
1649 var params = {textDocument: {uri: util.LspFileToUri(fname)}}
1650 var reply = lspserver.rpc('textDocument/foldingRange', params)
1651 if reply->empty() || reply.result->empty()
1655 # result: FoldingRange[]
1656 var end_lnum: number
1657 var last_lnum: number = line('$')
1658 for foldRange in reply.result
1659 end_lnum = foldRange.endLine + 1
1660 if end_lnum < foldRange.startLine + 2
1661 end_lnum = foldRange.startLine + 2
1663 exe $':{foldRange.startLine + 2}, {end_lnum}fold'
1664 # Open all the folds, otherwise the subsequently created folds are not
1670 :setlocal foldcolumn=2
1674 # process the 'workspace/executeCommand' reply from the LSP server
1675 # Result: any | null
1676 def WorkspaceExecuteReply(lspserver: dict<any>, execReply: any)
1677 # Nothing to do for the reply
1680 # Request the LSP server to execute a command
1681 # Request: workspace/executeCommand
1682 # Params: ExecuteCommandParams
1683 def ExecuteCommand(lspserver: dict<any>, cmd: dict<any>)
1684 # Need to check for lspserver.caps.executeCommandProvider?
1686 lspserver.rpc_a('workspace/executeCommand', params, WorkspaceExecuteReply)
1689 # Display the LSP server capabilities (received during the initialization
1691 def GetCapabilities(lspserver: dict<any>): list<string>
1693 var heading = $"'{lspserver.path}' Language Server Capabilities"
1694 var underlines = repeat('=', heading->len())
1695 l->extend([heading, underlines])
1696 for k in lspserver.caps->keys()->sort()
1697 l->add($'{k}: {lspserver.caps[k]->string()}')
1702 # Display the LSP server initialize request and result
1703 def GetInitializeRequest(lspserver: dict<any>): list<string>
1705 var heading = $"'{lspserver.path}' Language Server Initialize Request"
1706 var underlines = repeat('=', heading->len())
1707 l->extend([heading, underlines])
1708 if lspserver->has_key('rpcInitializeRequest')
1709 for k in lspserver.rpcInitializeRequest->keys()->sort()
1710 l->add($'{k}: {lspserver.rpcInitializeRequest[k]->string()}')
1716 # Store a log or trace message received from the language server.
1717 def AddMessage(lspserver: dict<any>, msgType: string, newMsg: string)
1718 # A single message may contain multiple lines separate by newline
1719 var msgs = newMsg->split("\n")
1720 lspserver.messages->add($'{strftime("%m/%d/%y %T")}: [{msgType}]: {msgs[0]}')
1721 lspserver.messages->extend(msgs[1 : ])
1722 # Keep only the last 500 messages to reduce the memory usage
1723 if lspserver.messages->len() >= 600
1724 lspserver.messages = lspserver.messages[-500 : ]
1728 # Display the log messages received from the LSP server (window/logMessage)
1729 def GetMessages(lspserver: dict<any>): list<string>
1730 if lspserver.messages->empty()
1731 return [$'No messages received from "{lspserver.name}" server']
1735 var heading = $"'{lspserver.path}' Language Server Messages"
1736 var underlines = repeat('=', heading->len())
1737 l->extend([heading, underlines])
1738 l->extend(lspserver.messages)
1742 # Send a 'textDocument/definition' request to the LSP server to get the
1743 # location where the symbol under the cursor is defined and return a list of
1744 # Dicts in a format accepted by the 'tagfunc' option.
1745 # Returns null if the LSP server doesn't support getting the location of a
1746 # symbol definition or the symbol is not defined.
1747 def TagFunc(lspserver: dict<any>, pat: string, flags: string, info: dict<any>): any
1748 # Check whether LSP server supports getting the location of a definition
1749 if !lspserver.isDefinitionProvider
1753 # interface DefinitionParams
1754 # interface TextDocumentPositionParams
1755 var reply = lspserver.rpc('textDocument/definition',
1756 lspserver.getTextDocPosition(false))
1757 if reply->empty() || reply.result->empty()
1761 var taglocations: list<dict<any>>
1762 if reply.result->type() == v:t_list
1763 taglocations = reply.result
1765 taglocations = [reply.result]
1768 if lspserver.needOffsetEncoding
1769 # Decode the position encoding in all the reference locations
1770 taglocations->map((_, loc) => {
1771 lspserver.decodeLocation(loc)
1776 return symbol.TagFunc(lspserver, taglocations, pat)
1779 # Returns unique ID used for identifying the various servers
1780 var UniqueServerIdCounter = 0
1781 def GetUniqueServerId(): number
1782 UniqueServerIdCounter = UniqueServerIdCounter + 1
1783 return UniqueServerIdCounter
1786 export def NewLspServer(serverParams: dict<any>): dict<any>
1787 var lspserver: dict<any> = {
1788 id: GetUniqueServerId(),
1789 name: serverParams.name,
1790 path: serverParams.path,
1791 args: serverParams.args->deepcopy(),
1799 callHierarchyType: '',
1800 completionTriggerChars: [],
1801 customNotificationHandlers: serverParams.customNotificationHandlers->deepcopy(),
1802 customRequestHandlers: serverParams.customRequestHandlers->deepcopy(),
1803 debug: serverParams.debug,
1804 features: serverParams.features->deepcopy(),
1805 forceOffsetEncoding: serverParams.forceOffsetEncoding,
1806 initializationOptions: serverParams.initializationOptions->deepcopy(),
1808 omniCompletePending: false,
1809 peekSymbolFilePopup: -1,
1810 peekSymbolPopup: -1,
1811 processDiagHandler: serverParams.processDiagHandler,
1812 rootSearchFiles: serverParams.rootSearch->deepcopy(),
1813 runIfSearchFiles: serverParams.runIfSearch->deepcopy(),
1814 runUnlessSearchFiles: serverParams.runUnlessSearch->deepcopy(),
1817 syncInit: serverParams.syncInit,
1818 traceLevel: serverParams.traceLevel,
1819 typeHierFilePopup: -1,
1821 workspaceConfig: serverParams.workspaceConfig->deepcopy(),
1822 workspaceSymbolPopup: -1,
1823 workspaceSymbolQuery: ''
1825 lspserver.logfile = $'lsp-{lspserver.name}.log'
1826 lspserver.errfile = $'lsp-{lspserver.name}.err'
1828 # Add the LSP server functions
1830 startServer: function(StartServer, [lspserver]),
1831 initServer: function(InitServer, [lspserver]),
1832 stopServer: function(StopServer, [lspserver]),
1833 shutdownServer: function(ShutdownServer, [lspserver]),
1834 exitServer: function(ExitServer, [lspserver]),
1835 setTrace: function(SetTrace, [lspserver]),
1836 traceLog: function(TraceLog, [lspserver]),
1837 errorLog: function(ErrorLog, [lspserver]),
1838 nextReqID: function(NextReqID, [lspserver]),
1839 createRequest: function(CreateRequest, [lspserver]),
1840 createResponse: function(CreateResponse, [lspserver]),
1841 sendResponse: function(SendResponse, [lspserver]),
1842 sendMessage: function(SendMessage, [lspserver]),
1843 sendNotification: function(SendNotification, [lspserver]),
1844 rpc: function(Rpc, [lspserver]),
1845 rpc_a: function(AsyncRpc, [lspserver]),
1846 waitForResponse: function(WaitForResponse, [lspserver]),
1847 processReply: function(handlers.ProcessReply, [lspserver]),
1848 processNotif: function(handlers.ProcessNotif, [lspserver]),
1849 processRequest: function(handlers.ProcessRequest, [lspserver]),
1850 processMessages: function(handlers.ProcessMessages, [lspserver]),
1851 encodePosition: function(offset.EncodePosition, [lspserver]),
1852 decodePosition: function(offset.DecodePosition, [lspserver]),
1853 encodeRange: function(offset.EncodeRange, [lspserver]),
1854 decodeRange: function(offset.DecodeRange, [lspserver]),
1855 encodeLocation: function(offset.EncodeLocation, [lspserver]),
1856 decodeLocation: function(offset.DecodeLocation, [lspserver]),
1857 getPosition: function(GetPosition, [lspserver]),
1858 getTextDocPosition: function(GetTextDocPosition, [lspserver]),
1859 textdocDidOpen: function(TextdocDidOpen, [lspserver]),
1860 textdocDidClose: function(TextdocDidClose, [lspserver]),
1861 textdocDidChange: function(TextdocDidChange, [lspserver]),
1862 sendInitializedNotif: function(SendInitializedNotif, [lspserver]),
1863 sendWorkspaceConfig: function(SendWorkspaceConfig, [lspserver]),
1864 getCompletion: function(GetCompletion, [lspserver]),
1865 resolveCompletion: function(ResolveCompletion, [lspserver]),
1866 gotoDefinition: function(GotoDefinition, [lspserver]),
1867 gotoDeclaration: function(GotoDeclaration, [lspserver]),
1868 gotoTypeDef: function(GotoTypeDef, [lspserver]),
1869 gotoImplementation: function(GotoImplementation, [lspserver]),
1870 tagFunc: function(TagFunc, [lspserver]),
1871 switchSourceHeader: function(SwitchSourceHeader, [lspserver]),
1872 showSignature: function(ShowSignature, [lspserver]),
1873 didSaveFile: function(DidSaveFile, [lspserver]),
1874 hover: function(ShowHoverInfo, [lspserver]),
1875 showReferences: function(ShowReferences, [lspserver]),
1876 docHighlight: function(DocHighlight, [lspserver]),
1877 getDocSymbols: function(GetDocSymbols, [lspserver]),
1878 textDocFormat: function(TextDocFormat, [lspserver]),
1879 prepareCallHierarchy: function(PrepareCallHierarchy, [lspserver]),
1880 incomingCalls: function(IncomingCalls, [lspserver]),
1881 getIncomingCalls: function(GetIncomingCalls, [lspserver]),
1882 outgoingCalls: function(OutgoingCalls, [lspserver]),
1883 getOutgoingCalls: function(GetOutgoingCalls, [lspserver]),
1884 inlayHintsShow: function(InlayHintsShow, [lspserver]),
1885 typeHierarchy: function(TypeHierarchy, [lspserver]),
1886 renameSymbol: function(RenameSymbol, [lspserver]),
1887 codeAction: function(CodeAction, [lspserver]),
1888 codeLens: function(CodeLens, [lspserver]),
1889 resolveCodeLens: function(ResolveCodeLens, [lspserver]),
1890 workspaceQuery: function(WorkspaceQuerySymbols, [lspserver]),
1891 addWorkspaceFolder: function(AddWorkspaceFolder, [lspserver]),
1892 removeWorkspaceFolder: function(RemoveWorkspaceFolder, [lspserver]),
1893 selectionRange: function(SelectionRange, [lspserver]),
1894 selectionExpand: function(SelectionExpand, [lspserver]),
1895 selectionShrink: function(SelectionShrink, [lspserver]),
1896 foldRange: function(FoldRange, [lspserver]),
1897 executeCommand: function(ExecuteCommand, [lspserver]),
1898 workspaceConfigGet: function(WorkspaceConfigGet, [lspserver]),
1899 getCapabilities: function(GetCapabilities, [lspserver]),
1900 getInitializeRequest: function(GetInitializeRequest, [lspserver]),
1901 addMessage: function(AddMessage, [lspserver]),
1902 getMessages: function(GetMessages, [lspserver])
1908 # vim: tabstop=8 shiftwidth=2 softtabstop=2