mirror of
https://github.com/golang/go
synced 2024-11-18 18:54:42 -07:00
9b5bafe36f
This allows us to write the lsp verbs in terms of a stable underlying source management layer. This should make it easier to refactor the underlying layer to add more powerful caching and incremental modes as we go. Change-Id: Iab97b061d80394a6fa6748a93a4c68f2deb46129 Reviewed-on: https://go-review.googlesource.com/c/147201 Reviewed-by: Rebecca Stambler <rstambler@golang.org>
237 lines
8.0 KiB
Go
237 lines
8.0 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package lsp
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import (
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"context"
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"os"
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"sync"
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"golang.org/x/tools/internal/jsonrpc2"
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"golang.org/x/tools/internal/lsp/protocol"
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"golang.org/x/tools/internal/lsp/source"
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)
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// RunServer starts an LSP server on the supplied stream, and waits until the
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// stream is closed.
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func RunServer(ctx context.Context, stream jsonrpc2.Stream, opts ...interface{}) error {
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s := &server{}
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conn, client := protocol.RunServer(ctx, stream, s, opts...)
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s.client = client
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return conn.Wait(ctx)
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}
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type server struct {
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client protocol.Client
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initializedMu sync.Mutex
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initialized bool // set once the server has received "initialize" request
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view *source.View
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}
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func (s *server) Initialize(ctx context.Context, params *protocol.InitializeParams) (*protocol.InitializeResult, error) {
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s.initializedMu.Lock()
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defer s.initializedMu.Unlock()
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if s.initialized {
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return nil, jsonrpc2.NewErrorf(jsonrpc2.CodeInvalidRequest, "server already initialized")
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}
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s.view = source.NewView()
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s.initialized = true
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return &protocol.InitializeResult{
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Capabilities: protocol.ServerCapabilities{
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TextDocumentSync: protocol.TextDocumentSyncOptions{
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Change: float64(protocol.Full), // full contents of file sent on each update
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OpenClose: true,
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},
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DocumentFormattingProvider: true,
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DocumentRangeFormattingProvider: true,
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},
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}, nil
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}
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func (s *server) Initialized(context.Context, *protocol.InitializedParams) error {
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return nil // ignore
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}
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func (s *server) Shutdown(context.Context) error {
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s.initializedMu.Lock()
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defer s.initializedMu.Unlock()
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if !s.initialized {
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return jsonrpc2.NewErrorf(jsonrpc2.CodeInvalidRequest, "server not initialized")
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}
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s.initialized = false
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return nil
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}
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func (s *server) Exit(ctx context.Context) error {
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if s.initialized {
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os.Exit(1)
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}
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os.Exit(0)
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return nil
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}
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func (s *server) DidChangeWorkspaceFolders(context.Context, *protocol.DidChangeWorkspaceFoldersParams) error {
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return notImplemented("DidChangeWorkspaceFolders")
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}
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func (s *server) DidChangeConfiguration(context.Context, *protocol.DidChangeConfigurationParams) error {
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return notImplemented("DidChangeConfiguration")
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}
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func (s *server) DidChangeWatchedFiles(context.Context, *protocol.DidChangeWatchedFilesParams) error {
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return notImplemented("DidChangeWatchedFiles")
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}
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func (s *server) Symbols(context.Context, *protocol.WorkspaceSymbolParams) ([]protocol.SymbolInformation, error) {
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return nil, notImplemented("Symbols")
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}
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func (s *server) ExecuteCommand(context.Context, *protocol.ExecuteCommandParams) (interface{}, error) {
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return nil, notImplemented("ExecuteCommand")
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}
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func (s *server) DidOpen(ctx context.Context, params *protocol.DidOpenTextDocumentParams) error {
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s.cacheAndDiagnoseFile(ctx, params.TextDocument.URI, params.TextDocument.Text)
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return nil
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}
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func (s *server) DidChange(ctx context.Context, params *protocol.DidChangeTextDocumentParams) error {
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if len(params.ContentChanges) < 1 {
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return jsonrpc2.NewErrorf(jsonrpc2.CodeInternalError, "no content changes provided")
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}
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// We expect the full content of file, i.e. a single change with no range.
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if change := params.ContentChanges[0]; change.RangeLength == 0 {
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s.cacheAndDiagnoseFile(ctx, params.TextDocument.URI, change.Text)
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}
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return nil
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}
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func (s *server) cacheAndDiagnoseFile(ctx context.Context, uri protocol.DocumentURI, text string) {
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s.view.SetActiveFileContent(uri, []byte(text))
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go func() {
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reports, err := diagnostics(s.view, uri)
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if err == nil {
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for filename, diagnostics := range reports {
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s.client.PublishDiagnostics(ctx, &protocol.PublishDiagnosticsParams{
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URI: source.ToURI(filename),
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Diagnostics: diagnostics,
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})
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}
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}
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}()
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}
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func (s *server) WillSave(context.Context, *protocol.WillSaveTextDocumentParams) error {
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return notImplemented("WillSave")
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}
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func (s *server) WillSaveWaitUntil(context.Context, *protocol.WillSaveTextDocumentParams) ([]protocol.TextEdit, error) {
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return nil, notImplemented("WillSaveWaitUntil")
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}
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func (s *server) DidSave(context.Context, *protocol.DidSaveTextDocumentParams) error {
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// TODO(rstambler): Should we clear the cache here?
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return nil // ignore
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}
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func (s *server) DidClose(ctx context.Context, params *protocol.DidCloseTextDocumentParams) error {
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s.view.ClearActiveFile(params.TextDocument.URI)
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return nil
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}
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func (s *server) Completion(context.Context, *protocol.CompletionParams) (*protocol.CompletionList, error) {
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return nil, notImplemented("Completion")
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}
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func (s *server) CompletionResolve(context.Context, *protocol.CompletionItem) (*protocol.CompletionItem, error) {
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return nil, notImplemented("CompletionResolve")
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}
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func (s *server) Hover(context.Context, *protocol.TextDocumentPositionParams) (*protocol.Hover, error) {
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return nil, notImplemented("Hover")
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}
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func (s *server) SignatureHelp(context.Context, *protocol.TextDocumentPositionParams) (*protocol.SignatureHelp, error) {
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return nil, notImplemented("SignatureHelp")
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}
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func (s *server) Definition(context.Context, *protocol.TextDocumentPositionParams) ([]protocol.Location, error) {
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return nil, notImplemented("Definition")
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}
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func (s *server) TypeDefinition(context.Context, *protocol.TextDocumentPositionParams) ([]protocol.Location, error) {
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return nil, notImplemented("TypeDefinition")
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}
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func (s *server) Implementation(context.Context, *protocol.TextDocumentPositionParams) ([]protocol.Location, error) {
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return nil, notImplemented("Implementation")
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}
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func (s *server) References(context.Context, *protocol.ReferenceParams) ([]protocol.Location, error) {
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return nil, notImplemented("References")
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}
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func (s *server) DocumentHighlight(context.Context, *protocol.TextDocumentPositionParams) ([]protocol.DocumentHighlight, error) {
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return nil, notImplemented("DocumentHighlight")
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}
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func (s *server) DocumentSymbol(context.Context, *protocol.DocumentSymbolParams) ([]protocol.DocumentSymbol, error) {
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return nil, notImplemented("DocumentSymbol")
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}
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func (s *server) CodeAction(context.Context, *protocol.CodeActionParams) ([]protocol.CodeAction, error) {
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return nil, notImplemented("CodeAction")
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}
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func (s *server) CodeLens(context.Context, *protocol.CodeLensParams) ([]protocol.CodeLens, error) {
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return nil, nil // ignore
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}
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func (s *server) CodeLensResolve(context.Context, *protocol.CodeLens) (*protocol.CodeLens, error) {
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return nil, notImplemented("CodeLensResolve")
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}
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func (s *server) DocumentLink(context.Context, *protocol.DocumentLinkParams) ([]protocol.DocumentLink, error) {
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return nil, nil // ignore
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}
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func (s *server) DocumentLinkResolve(context.Context, *protocol.DocumentLink) (*protocol.DocumentLink, error) {
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return nil, notImplemented("DocumentLinkResolve")
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}
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func (s *server) DocumentColor(context.Context, *protocol.DocumentColorParams) ([]protocol.ColorInformation, error) {
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return nil, notImplemented("DocumentColor")
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}
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func (s *server) ColorPresentation(context.Context, *protocol.ColorPresentationParams) ([]protocol.ColorPresentation, error) {
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return nil, notImplemented("ColorPresentation")
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}
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func (s *server) Formatting(ctx context.Context, params *protocol.DocumentFormattingParams) ([]protocol.TextEdit, error) {
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return formatRange(s.view, params.TextDocument.URI, nil)
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}
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func (s *server) RangeFormatting(ctx context.Context, params *protocol.DocumentRangeFormattingParams) ([]protocol.TextEdit, error) {
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return formatRange(s.view, params.TextDocument.URI, ¶ms.Range)
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}
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func (s *server) OnTypeFormatting(context.Context, *protocol.DocumentOnTypeFormattingParams) ([]protocol.TextEdit, error) {
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return nil, notImplemented("OnTypeFormatting")
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}
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func (s *server) Rename(context.Context, *protocol.RenameParams) ([]protocol.WorkspaceEdit, error) {
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return nil, notImplemented("Rename")
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}
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func (s *server) FoldingRanges(context.Context, *protocol.FoldingRangeRequestParam) ([]protocol.FoldingRange, error) {
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return nil, notImplemented("FoldingRanges")
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}
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func notImplemented(method string) *jsonrpc2.Error {
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return jsonrpc2.NewErrorf(jsonrpc2.CodeMethodNotFound, "method %q not yet implemented", method)
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}
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