mirror of
https://github.com/golang/go
synced 2024-11-18 16:44:43 -07:00
700ee2612c
We were ignoring errors in a few cases and returning incorrect errors in the case of the command-line interface (no identifier found when there were just no references). I think it is better for references to return an error than incomplete results. Change-Id: Id90bca58ebdd9f6a910853cb4ac5b6ab6bec57f8 Reviewed-on: https://go-review.googlesource.com/c/tools/+/213817 Run-TryBot: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Heschi Kreinick <heschi@google.com>
90 lines
2.1 KiB
Go
90 lines
2.1 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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)
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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, err := s.session.ViewOf(uri)
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if err != nil {
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return nil, err
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}
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snapshot := view.Snapshot()
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fh, err := snapshot.GetFile(ctx, uri)
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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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if fh.Identity().Kind != source.Go {
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return nil, nil
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}
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phs, err := snapshot.PackageHandles(ctx, fh)
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if err != nil {
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return nil, nil
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}
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// Get the location of each reference to return as the result.
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var (
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locations []protocol.Location
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seen = make(map[span.Span]bool)
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lastIdent *source.IdentifierInfo
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)
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for _, ph := range phs {
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ident, err := source.Identifier(ctx, snapshot, fh, params.Position, source.SpecificPackageHandle(ph.ID()))
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if err != nil {
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return nil, err
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}
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lastIdent = ident
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references, err := ident.References(ctx)
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if err != nil {
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return nil, err
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}
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for _, ref := range references {
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refSpan, err := ref.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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refRange, err := ref.Range()
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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, protocol.Location{
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URI: protocol.NewURI(ref.URI()),
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Range: refRange,
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})
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}
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}
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// Only add the identifier's declaration if the client requests it.
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if params.Context.IncludeDeclaration && lastIdent != nil {
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rng, err := lastIdent.Declaration.Range()
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if err != nil {
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return nil, err
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}
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locations = append([]protocol.Location{
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{
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URI: protocol.NewURI(lastIdent.Declaration.URI()),
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Range: rng,
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},
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}, locations...)
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}
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return locations, nil
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}
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