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go/internal/lsp/references.go
Rebecca Stambler 3cbd95df51 internal/lsp: support a file belonging to multiple packages
This change adds supports for a package belonging to multiple files.
It requires additional packages.Loads for all of the packages to which a
file belongs (for example, if a non-test file also belongs to a package's
test variant).

For now, we re-run go/packages.Load for each file we open, regardless of
whether or not we already know about it.

This solves the issue of packages randomly belonging to a test or not.
Follow-up work needs to be done to support multiple packages in
references, rename, and diagnostics.

Fixes golang/go#32791
Fixes golang/go#30100

Change-Id: I0a5870a05825fc16cc46d405ef50c775094b0fbb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/183628
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-06-26 17:56:19 +00:00

58 lines
1.5 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"
"golang.org/x/tools/internal/lsp/protocol"
"golang.org/x/tools/internal/lsp/source"
"golang.org/x/tools/internal/span"
)
func (s *Server) references(ctx context.Context, params *protocol.ReferenceParams) ([]protocol.Location, error) {
uri := span.NewURI(params.TextDocument.URI)
view := s.session.ViewOf(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
}
rng, err := spn.Range(m.Converter)
if err != nil {
return nil, err
}
// Find all references to the identifier at the position.
ident, err := source.Identifier(ctx, view, f, rng.Start)
if err != nil {
return nil, err
}
references, err := ident.References(ctx)
if err != nil {
view.Session().Logger().Errorf(ctx, "no references for %s: %v", ident.Name, err)
}
// Get the location of each reference to return as the result.
locations := make([]protocol.Location, 0, len(references))
for _, ref := range references {
refSpan, err := ref.Range.Span()
if err != nil {
return nil, err
}
_, refM, err := getSourceFile(ctx, view, refSpan.URI())
if err != nil {
return nil, err
}
loc, err := refM.Location(refSpan)
if err != nil {
return nil, err
}
locations = append(locations, loc)
}
return locations, nil
}