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go/internal/lsp/rename.go
Rebecca Stambler 57610eddc9 internal/lsp: rework snapshots and cache FileHandles per-snapshot
This change does not complete the work to handle snapshots correctly,
but it does implement the behavior of re-building the snapshot on each
file invalidation.

It also moves to the approach of caching the FileHandles on the snapshot,
rather than in the goFile object, which is now not necessary.

Finally, this change shifts the logic of metadata invalidation into the
content invalidation step, so there is less logic to decide if we should
re-load a package or not.

Change-Id: I18387c385fb070da4db1302bf97035ce6328b5c3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/197799
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
2019-10-01 16:26:22 +00:00

54 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) rename(ctx context.Context, params *protocol.RenameParams) (*protocol.WorkspaceEdit, error) {
uri := span.NewURI(params.TextDocument.URI)
view := s.session.ViewOf(uri)
f, err := view.GetFile(ctx, uri)
if err != nil {
return nil, err
}
ident, err := source.Identifier(ctx, view, f, params.Position)
if err != nil {
return nil, err
}
edits, err := ident.Rename(ctx, view, params.NewName)
if err != nil {
return nil, err
}
changes := make(map[string][]protocol.TextEdit)
for uri, e := range edits {
changes[protocol.NewURI(uri)] = e
}
return &protocol.WorkspaceEdit{Changes: &changes}, nil
}
func (s *Server) prepareRename(ctx context.Context, params *protocol.PrepareRenameParams) (*protocol.Range, error) {
uri := span.NewURI(params.TextDocument.URI)
view := s.session.ViewOf(uri)
f, err := view.GetFile(ctx, uri)
if err != nil {
return nil, err
}
// Do not return errors here, as it adds clutter.
// Returning a nil result means there is not a valid rename.
item, err := source.PrepareRename(ctx, view, f, params.Position)
if err != nil {
return nil, nil
}
// TODO(suzmue): return ident.Name as the placeholder text.
return &item.Range, nil
}