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go/internal/lsp/hover.go
Rebecca Stambler abbb706b23 internal/lsp: enable enhanced hover by default
This change removes the explicit configuration for improved
documentation on hover. We use a comment's synopsis rather than the full
comment.

However, we also add a "noDocsOnHover" setting that is used by the cmd
tests. Ultimately, no one should use this setting and we should remove
it. We leave it temporarily because the cmd tests still need work.

Change-Id: I5488eca96a729ed7edad8f59b95af163903740d6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/174378
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-05-16 17:30:22 +00:00

71 lines
1.6 KiB
Go

// 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"
"fmt"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
)
func (s *Server) hover(ctx context.Context, params *protocol.TextDocumentPositionParams) (*protocol.Hover, error) {
uri := span.NewURI(params.TextDocument.URI)
view := s.findView(ctx, uri)
f, m, err := getGoFile(ctx, view, uri)
if err != nil {
return nil, err
}
spn, err := m.PointSpan(params.Position)
if err != nil {
return nil, err
}
identRange, err := spn.Range(m.Converter)
if err != nil {
return nil, err
}
ident, err := source.Identifier(ctx, view, f, identRange.Start)
if err != nil {
return nil, err
}
hover, err := ident.Hover(ctx, nil, s.preferredContentFormat == protocol.Markdown, !s.noDocsOnHover)
if err != nil {
return nil, err
}
identSpan, err := ident.Range.Span()
if err != nil {
return nil, err
}
rng, err := m.Range(identSpan)
if err != nil {
return nil, err
}
return &protocol.Hover{
Contents: protocol.MarkupContent{
Kind: s.preferredContentFormat,
Value: hover,
},
Range: &rng,
}, nil
}
func markupContent(decl, doc string, kind protocol.MarkupKind) protocol.MarkupContent {
result := protocol.MarkupContent{
Kind: kind,
}
switch kind {
case protocol.PlainText:
result.Value = decl
case protocol.Markdown:
result.Value = "```go\n" + decl + "\n```"
}
if doc != "" {
result.Value = fmt.Sprintf("%s\n%s", doc, result.Value)
}
return result
}