| // 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() |
| f, err := view.GetFile(ctx, uri) |
| if err != nil { |
| return nil, err |
| } |
| if f.Kind() != source.Go { |
| return nil, nil |
| } |
| ident, err := source.Identifier(ctx, snapshot, f, 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 { |
| f, err := view.GetFile(ctx, uri) |
| if err != nil { |
| return nil, err |
| } |
| fh := ident.Snapshot.Handle(ctx, f) |
| 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() |
| f, err := view.GetFile(ctx, uri) |
| if err != nil { |
| return nil, err |
| } |
| if f.Kind() != source.Go { |
| return nil, nil |
| } |
| ident, err := source.Identifier(ctx, snapshot, f, 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 |
| } |