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https://github.com/golang/go
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73497f0562
Change-Id: I09ee44d0121b7ced001b8195f9fa81b5225cb0c7 Reviewed-on: https://go-review.googlesource.com/c/tools/+/186197 Run-TryBot: Ian Cottrell <iancottrell@google.com> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package lsp
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import (
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"context"
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"golang.org/x/tools/internal/lsp/protocol"
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"golang.org/x/tools/internal/lsp/source"
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"golang.org/x/tools/internal/lsp/telemetry/log"
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"golang.org/x/tools/internal/lsp/telemetry/tag"
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"golang.org/x/tools/internal/span"
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)
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func (s *Server) documentHighlight(ctx context.Context, params *protocol.TextDocumentPositionParams) ([]protocol.DocumentHighlight, error) {
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uri := span.NewURI(params.TextDocument.URI)
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view := s.session.ViewOf(uri)
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f, m, err := getGoFile(ctx, view, uri)
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if err != nil {
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return nil, err
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}
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spn, err := m.PointSpan(params.Position)
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if err != nil {
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return nil, err
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}
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rng, err := spn.Range(m.Converter)
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if err != nil {
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return nil, err
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}
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spans, err := source.Highlight(ctx, f, rng.Start)
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if err != nil {
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log.Error(ctx, "no highlight", err, tag.Of("Span", spn))
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}
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return toProtocolHighlight(m, spans), nil
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}
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func toProtocolHighlight(m *protocol.ColumnMapper, spans []span.Span) []protocol.DocumentHighlight {
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result := make([]protocol.DocumentHighlight, 0, len(spans))
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kind := protocol.Text
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for _, span := range spans {
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r, err := m.Range(span)
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if err != nil {
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continue
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}
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h := protocol.DocumentHighlight{Kind: &kind, Range: r}
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result = append(result, h)
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}
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return result
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}
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