blob: 8a343fbec815a08b36e7b41f88a7258e00fd7d05 [file] [log] [blame]
// Copyright 2018 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 (
func (s *Server) signatureHelp(ctx context.Context, params *protocol.SignatureHelpParams) (*protocol.SignatureHelp, error) {
snapshot, fh, ok, release, err := s.beginFileRequest(ctx, params.TextDocument.URI, source.Go)
defer release()
if !ok {
return nil, err
info, activeParameter, err := source.SignatureHelp(ctx, snapshot, fh, params.Position)
if err != nil {
event.Error(ctx, "no signature help", err, tag.Position.Of(params.Position))
return nil, nil
return &protocol.SignatureHelp{
Signatures: []protocol.SignatureInformation{*info},
ActiveParameter: uint32(activeParameter),
}, nil