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go/internal/lsp/rename.go
Rebecca Stambler 2208e1677e internal/lsp: eliminate source.File type and move GetFile to snapshot
This change eliminates the extra step of calling GetFile on the view and
getting the FileHandle from the snapshot. It also eliminiates the
redundant source.File type. Follow up changes will clean up the file
kind handling, since it still exists on the fileBase type.

Change-Id: I635ab8632821b36e062be5151eaab425a5698f60
Reviewed-on: https://go-review.googlesource.com/c/tools/+/211778
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2019-12-19 20:51:25 +00:00

77 lines
2.0 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) rename(ctx context.Context, params *protocol.RenameParams) (*protocol.WorkspaceEdit, error) {
uri := span.NewURI(params.TextDocument.URI)
view, err := s.session.ViewOf(uri)
if err != nil {
return nil, err
}
snapshot := view.Snapshot()
fh, err := snapshot.GetFile(ctx, uri)
if err != nil {
return nil, err
}
if fh.Identity().Kind != source.Go {
return nil, nil
}
ident, err := source.Identifier(ctx, snapshot, fh, params.Position, source.WidestCheckPackageHandle)
if err != nil {
return nil, nil
}
edits, err := ident.Rename(ctx, params.NewName)
if err != nil {
return nil, err
}
var docChanges []protocol.TextDocumentEdit
for uri, e := range edits {
fh, err := snapshot.GetFile(ctx, uri)
if err != nil {
return nil, err
}
docChanges = append(docChanges, documentChanges(fh, e)...)
}
return &protocol.WorkspaceEdit{
DocumentChanges: docChanges,
}, nil
}
func (s *Server) prepareRename(ctx context.Context, params *protocol.PrepareRenameParams) (*protocol.Range, error) {
uri := span.NewURI(params.TextDocument.URI)
view, err := s.session.ViewOf(uri)
if err != nil {
return nil, err
}
snapshot := view.Snapshot()
fh, err := snapshot.GetFile(ctx, uri)
if err != nil {
return nil, err
}
if fh.Identity().Kind != source.Go {
return nil, nil
}
ident, err := source.Identifier(ctx, snapshot, fh, params.Position, source.WidestCheckPackageHandle)
if err != nil {
return nil, nil // ignore errors
}
// Do not return errors here, as it adds clutter.
// Returning a nil result means there is not a valid rename.
item, err := ident.PrepareRename(ctx)
if err != nil {
return nil, nil // ignore errors
}
// TODO(suzmue): return ident.Name as the placeholder text.
return &item.Range, nil
}