mirror of
https://github.com/golang/go
synced 2024-09-30 22:58:34 -06:00
156eb2ae29
This is a straight move of some code with no changes. It splits the part of the telemetry code that will become a standalone library from the bit that belongs in the lsp. Change-Id: Icedb6bf1f3711da9251450531729984df6df7787 Reviewed-on: https://go-review.googlesource.com/c/tools/+/190403 Run-TryBot: Ian Cottrell <iancottrell@google.com> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
78 lines
2.0 KiB
Go
78 lines
2.0 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/span"
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"golang.org/x/tools/internal/telemetry/log"
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"golang.org/x/tools/internal/telemetry/tag"
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)
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func (s *Server) references(ctx context.Context, params *protocol.ReferenceParams) ([]protocol.Location, 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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// Find all references to the identifier at the position.
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ident, err := source.Identifier(ctx, f, rng.Start)
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if err != nil {
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return nil, err
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}
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references, err := ident.References(ctx)
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if err != nil {
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log.Error(ctx, "no references", err, tag.Of("Identifier", ident.Name))
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}
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if params.Context.IncludeDeclaration {
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// The declaration of this identifier may not be in the
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// scope that we search for references, so make sure
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// it is added to the beginning of the list if IncludeDeclaration
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// was specified.
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references = append([]*source.ReferenceInfo{
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&source.ReferenceInfo{
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Range: ident.DeclarationRange(),
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},
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}, references...)
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}
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// Get the location of each reference to return as the result.
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locations := make([]protocol.Location, 0, len(references))
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seen := make(map[span.Span]bool)
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for _, ref := range references {
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refSpan, err := ref.Range.Span()
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if err != nil {
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return nil, err
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}
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if seen[refSpan] {
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continue // already added this location
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}
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seen[refSpan] = true
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_, refM, err := getSourceFile(ctx, view, refSpan.URI())
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if err != nil {
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return nil, err
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}
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loc, err := refM.Location(refSpan)
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if err != nil {
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return nil, err
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}
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locations = append(locations, loc)
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}
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return locations, nil
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}
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