mirror of
https://github.com/golang/go
synced 2024-10-01 07:28:35 -06:00
fef9eaa9e4
The latest version of the LSP protocol introduces a number of changes. It is now possible to indicate partial results and progress. request.ts had to construct some new types (at the end of tsclient.go and tsserver,go) to avoid using a struct for a formal parameter type. Also, instead of using the same type for many RPCs, most RPCs now have their own types. Change-Id: I095a3e872f42a9f851c01ca4e3c6ac6e32446042 Reviewed-on: https://go-review.googlesource.com/c/tools/+/194177 Run-TryBot: Peter Weinberger <pjw@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Cottrell <iancottrell@google.com>
55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
// 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 (
|
|
"context"
|
|
|
|
"golang.org/x/tools/internal/lsp/protocol"
|
|
"golang.org/x/tools/internal/lsp/source"
|
|
"golang.org/x/tools/internal/span"
|
|
"golang.org/x/tools/internal/telemetry/log"
|
|
"golang.org/x/tools/internal/telemetry/tag"
|
|
)
|
|
|
|
func (s *Server) signatureHelp(ctx context.Context, params *protocol.SignatureHelpParams) (*protocol.SignatureHelp, error) {
|
|
uri := span.NewURI(params.TextDocument.URI)
|
|
view := s.session.ViewOf(uri)
|
|
f, err := getGoFile(ctx, view, uri)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
info, err := source.SignatureHelp(ctx, view, f, params.Position)
|
|
if err != nil {
|
|
log.Print(ctx, "no signature help", tag.Of("At", params.Position), tag.Of("Failure", err))
|
|
return nil, nil
|
|
}
|
|
return toProtocolSignatureHelp(info), nil
|
|
}
|
|
|
|
func toProtocolSignatureHelp(info *source.SignatureInformation) *protocol.SignatureHelp {
|
|
return &protocol.SignatureHelp{
|
|
ActiveParameter: float64(info.ActiveParameter),
|
|
ActiveSignature: 0, // there is only ever one possible signature
|
|
Signatures: []protocol.SignatureInformation{
|
|
{
|
|
Label: info.Label,
|
|
Documentation: info.Documentation,
|
|
Parameters: toProtocolParameterInformation(info.Parameters),
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func toProtocolParameterInformation(info []source.ParameterInformation) []protocol.ParameterInformation {
|
|
var result []protocol.ParameterInformation
|
|
for _, p := range info {
|
|
result = append(result, protocol.ParameterInformation{
|
|
Label: p.Label,
|
|
})
|
|
}
|
|
return result
|
|
}
|