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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package lsp
import (
"context"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
errors "golang.org/x/xerrors"
)
func (s *Server) didChangeWorkspaceFolders(ctx context.Context, params *protocol.DidChangeWorkspaceFoldersParams) error {
event := params.Event
for _, folder := range event.Removed {
view := s.session.View(folder.Name)
if view != nil {
view.Shutdown(ctx)
} else {
return errors.Errorf("view %s for %v not found", folder.Name, folder.URI)
}
}
return s.addFolders(ctx, event.Added)
}
func (s *Server) addView(ctx context.Context, name string, uri span.URI) (source.Snapshot, func(), error) {
s.stateMu.Lock()
state := s.state
s.stateMu.Unlock()
if state < serverInitialized {
return nil, func() {}, errors.Errorf("addView called before server initialized")
}
options := s.session.Options().Clone()
if err := s.fetchConfig(ctx, name, uri, options); err != nil {
return nil, func() {}, err
}
_, snapshot, release, err := s.session.NewView(ctx, name, uri, options)
return snapshot, release, err
}
func (s *Server) didChangeConfiguration(ctx context.Context, _ *protocol.DidChangeConfigurationParams) error {
// Apply any changes to the session-level settings.
options := s.session.Options().Clone()
semanticTokensRegistered := options.SemanticTokens
if err := s.fetchConfig(ctx, "", "", options); err != nil {
return err
}
s.session.SetOptions(options)
// Go through each view, getting and updating its configuration.
for _, view := range s.session.Views() {
options := s.session.Options().Clone()
if err := s.fetchConfig(ctx, view.Name(), view.Folder(), options); err != nil {
return err
}
view, err := view.SetOptions(ctx, options)
if err != nil {
return err
}
go func() {
snapshot, release := view.Snapshot(ctx)
defer release()
s.diagnoseDetached(snapshot)
}()
}
registration := semanticTokenRegistration(options.SemanticTypes, options.SemanticMods)
// Update any session-specific registrations or unregistrations.
if !semanticTokensRegistered && options.SemanticTokens {
if err := s.client.RegisterCapability(ctx, &protocol.RegistrationParams{
Registrations: []protocol.Registration{registration},
}); err != nil {
return err
}
} else if semanticTokensRegistered && !options.SemanticTokens {
if err := s.client.UnregisterCapability(ctx, &protocol.UnregistrationParams{
Unregisterations: []protocol.Unregistration{
{
ID: registration.ID,
Method: registration.Method,
},
},
}); err != nil {
return err
}
}
return nil
}
func semanticTokenRegistration(tokenTypes, tokenModifiers []string) protocol.Registration {
return protocol.Registration{
ID: "textDocument/semanticTokens",
Method: "textDocument/semanticTokens",
RegisterOptions: &protocol.SemanticTokensOptions{
Legend: protocol.SemanticTokensLegend{
// TODO(pjw): trim these to what we use (and an unused one
// at position 0 of TokTypes, to catch typos)
TokenTypes: tokenTypes,
TokenModifiers: tokenModifiers,
},
Full: true,
Range: true,
},
}
}
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