| // Copyright 2020 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 fake |
| |
| import ( |
| "golang.org/x/tools/gopls/internal/lsp/protocol" |
| "golang.org/x/tools/gopls/internal/lsp/source" |
| "golang.org/x/tools/internal/diff" |
| ) |
| |
| // NewEdit creates an edit replacing all content between the 0-based |
| // (startLine, startColumn) and (endLine, endColumn) with text. |
| // |
| // Columns measure UTF-16 codes. |
| func NewEdit(startLine, startColumn, endLine, endColumn uint32, text string) protocol.TextEdit { |
| return protocol.TextEdit{ |
| Range: protocol.Range{ |
| Start: protocol.Position{Line: startLine, Character: startColumn}, |
| End: protocol.Position{Line: endLine, Character: endColumn}, |
| }, |
| NewText: text, |
| } |
| } |
| |
| func EditToChangeEvent(e protocol.TextEdit) protocol.TextDocumentContentChangeEvent { |
| var rng protocol.Range = e.Range |
| return protocol.TextDocumentContentChangeEvent{ |
| Range: &rng, |
| Text: e.NewText, |
| } |
| } |
| |
| // applyEdits applies the edits to a file with the specified lines, |
| // and returns a new slice containing the lines of the patched file. |
| // It is a wrapper around diff.Apply; see that function for preconditions. |
| func applyEdits(mapper *protocol.Mapper, edits []protocol.TextEdit, windowsLineEndings bool) ([]byte, error) { |
| diffEdits, err := source.FromProtocolEdits(mapper, edits) |
| if err != nil { |
| return nil, err |
| } |
| patched, err := diff.ApplyBytes(mapper.Content, diffEdits) |
| if err != nil { |
| return nil, err |
| } |
| if windowsLineEndings { |
| patched = toWindowsLineEndings(patched) |
| } |
| return patched, nil |
| } |