clerk/internal/lsp/server.go (view raw)
Oleksandr Smirnov
Oleksandr Smirnov
olexsmir@gmail.com lsp: implement workspace/didChangeWatchedFiles, 1 month ago
olexsmir@gmail.com lsp: implement workspace/didChangeWatchedFiles, 1 month ago
| 1 | package lsp |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "log/slog" |
| 6 | "sync" |
| 7 | |
| 8 | "go.lsp.dev/protocol" |
| 9 | "go.lsp.dev/uri" |
| 10 | |
| 11 | "olexsmir.xyz/clerk/internal/analyzer" |
| 12 | "olexsmir.xyz/clerk/internal/linter" |
| 13 | "olexsmir.xyz/clerk/journal" |
| 14 | "olexsmir.xyz/clerk/journal/printer" |
| 15 | ) |
| 16 | |
| 17 | type server struct { |
| 18 | protocol.UnimplementedServer |
| 19 | |
| 20 | client protocol.Client |
| 21 | log *slog.Logger |
| 22 | |
| 23 | version, name string |
| 24 | |
| 25 | linter *linter.Linter |
| 26 | loader *journal.Loader |
| 27 | printer *printer.Config |
| 28 | |
| 29 | mu sync.Mutex |
| 30 | openDocs map[uri.URI]docState |
| 31 | diagCancel context.CancelFunc |
| 32 | supportsDynamicFileWatchers bool |
| 33 | |
| 34 | cfgMu sync.RWMutex |
| 35 | config Config |
| 36 | } |
| 37 | |
| 38 | // analysisFor returns the cached analysis for an open doc, rebuilds when the doc or a file it inclues changed. |
| 39 | func (s *server) analysisFor(u uri.URI) *analyzer.Analysis { |
| 40 | s.mu.Lock() |
| 41 | state, ok := s.openDocs[u] |
| 42 | if !ok { |
| 43 | s.mu.Unlock() |
| 44 | return nil |
| 45 | } |
| 46 | if !state.dirty { |
| 47 | an := state.analysis |
| 48 | s.mu.Unlock() |
| 49 | return an |
| 50 | } |
| 51 | text := state.text |
| 52 | version := state.version |
| 53 | s.mu.Unlock() |
| 54 | |
| 55 | an := analyzer.Build(s.loader.ResolveBytes(u.Path(), []byte(text))) |
| 56 | |
| 57 | s.mu.Lock() |
| 58 | state, ok = s.openDocs[u] |
| 59 | if !ok || state.version != version { |
| 60 | // editot or closed while building. doc stays dirty so te request rebuilds |
| 61 | s.mu.Unlock() |
| 62 | return an |
| 63 | } |
| 64 | state.analysis = an |
| 65 | state.dirty = false |
| 66 | state.paths = make(map[string]bool, len(an.Files)) |
| 67 | for _, pf := range an.Files { |
| 68 | state.paths[journal.CanonicalPath(pf.Path)] = true |
| 69 | } |
| 70 | s.openDocs[u] = state |
| 71 | s.mu.Unlock() |
| 72 | return an |
| 73 | } |
| 74 | |
| 75 | func (s *server) Initialize(ctx context.Context, params *protocol.InitializeParams) (*protocol.InitializeResult, error) { |
| 76 | if w := params.Capabilities.Workspace; w != nil { |
| 77 | if wf := w.DidChangeWatchedFiles; wf != nil { |
| 78 | s.supportsDynamicFileWatchers = wf.DynamicRegistration != nil && *wf.DynamicRegistration |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | s.applySettings(params.InitializationOptions) |
| 83 | return &protocol.InitializeResult{ |
| 84 | ServerInfo: protocol.ServerInfo{ |
| 85 | Name: s.name, |
| 86 | Version: protocol.NewOptional(s.version), |
| 87 | }, |
| 88 | Capabilities: protocol.ServerCapabilities{ |
| 89 | DocumentFormattingProvider: &protocol.DocumentFormattingOptions{}, |
| 90 | DefinitionProvider: protocol.Boolean(true), |
| 91 | HoverProvider: protocol.Boolean(true), |
| 92 | ReferencesProvider: protocol.Boolean(true), |
| 93 | WorkspaceSymbolProvider: protocol.Boolean(true), |
| 94 | DocumentSymbolProvider: protocol.Boolean(true), |
| 95 | RenameProvider: &protocol.RenameOptions{ |
| 96 | PrepareProvider: new(true), |
| 97 | }, |
| 98 | CompletionProvider: &protocol.CompletionOptions{ |
| 99 | TriggerCharacters: []string{":", "@"}, |
| 100 | }, |
| 101 | TextDocumentSync: &protocol.TextDocumentSyncOptions{ |
| 102 | OpenClose: new(true), |
| 103 | Change: new(protocol.TextDocumentSyncKindFull), |
| 104 | }, |
| 105 | SemanticTokensProvider: &protocol.SemanticTokensOptions{ |
| 106 | Legend: getSemanticTokensLegend(), |
| 107 | Range: protocol.Boolean(true), |
| 108 | Full: protocol.Boolean(true), |
| 109 | }, |
| 110 | }, |
| 111 | }, nil |
| 112 | } |
| 113 | |
| 114 | func (s *server) Initialized(ctx context.Context, params *protocol.InitializedParams) error { |
| 115 | if s.supportsDynamicFileWatchers { |
| 116 | go s.registerFileWatchers(context.Background()) |
| 117 | } |
| 118 | s.scheduleDiagnostics(ctx) |
| 119 | return nil |
| 120 | } |
| 121 | |
| 122 | func (s *server) DidChangeWatchedFiles(ctx context.Context, params *protocol.DidChangeWatchedFilesParams) error { |
| 123 | for _, change := range params.Changes { |
| 124 | u := change.URI |
| 125 | path := u.Path() |
| 126 | if path == "" { |
| 127 | continue |
| 128 | } |
| 129 | if _, isOpen := s.getDocState(u); isOpen { |
| 130 | continue // editor buffer is authoritative for open docs |
| 131 | } |
| 132 | s.loader.InvalidateFile(path) |
| 133 | s.markDependentsDirty(u) |
| 134 | } |
| 135 | s.scheduleDiagnostics(ctx) |
| 136 | return nil |
| 137 | } |
| 138 | |
| 139 | func (s *server) DidChangeConfiguration(ctx context.Context, params *protocol.DidChangeConfigurationParams) error { |
| 140 | s.applySettings(params.Settings) |
| 141 | return nil |
| 142 | } |
| 143 | |
| 144 | func (s *server) Shutdown(ctx context.Context) error { |
| 145 | return nil |
| 146 | } |
| 147 | |
| 148 | func (s *server) Exit(ctx context.Context) error { |
| 149 | return nil |
| 150 | } |
| 151 | |
| 152 | func (s *server) registerFileWatchers(ctx context.Context) { |
| 153 | if s.client == nil { |
| 154 | return |
| 155 | } |
| 156 | watchers := make([]protocol.FileSystemWatcher, 0, len(journal.SupportedExtensions)) |
| 157 | for _, ext := range journal.SupportedExtensions { |
| 158 | watchers = append(watchers, protocol.FileSystemWatcher{GlobPattern: protocol.Pattern("**/*" + ext)}) |
| 159 | } |
| 160 | options, err := protocol.Marshal(protocol.DidChangeWatchedFilesRegistrationOptions{Watchers: watchers}) |
| 161 | if err != nil { |
| 162 | return |
| 163 | } |
| 164 | if err := s.client.RegisterCapability(ctx, &protocol.RegistrationParams{ |
| 165 | Registrations: []protocol.Registration{{ |
| 166 | ID: "clerk.watchedFiles", |
| 167 | Method: protocol.MethodWorkspaceDidChangeWatchedFiles, |
| 168 | RegisterOptions: protocol.LSPAny(options), |
| 169 | }}, |
| 170 | }); err != nil { |
| 171 | s.log.Warn("registering file watchers failed", "err", err) |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | func (s *server) applySettings(v protocol.LSPAny) { |
| 176 | s.cfgMu.Lock() |
| 177 | if err := s.config.merge(v); err != nil { |
| 178 | s.log.Error("failed to merge config", "err", err) |
| 179 | } |
| 180 | s.cfgMu.Unlock() |
| 181 | } |