.gitignore added

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools / gopls@v0.6.9 / internal / hooks / diff.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools/gopls@v0.6.9/internal/hooks/diff.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools/gopls@v0.6.9/internal/hooks/diff.go
new file mode 100644 (file)
index 0000000..46d7dd7
--- /dev/null
+++ b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools/gopls@v0.6.9/internal/hooks/diff.go
@@ -0,0 +1,41 @@
+// 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 hooks
+
+import (
+       "fmt"
+
+       "github.com/sergi/go-diff/diffmatchpatch"
+       "golang.org/x/tools/internal/lsp/diff"
+       "golang.org/x/tools/internal/span"
+)
+
+func ComputeEdits(uri span.URI, before, after string) (edits []diff.TextEdit, err error) {
+       // The go-diff library has an unresolved panic (see golang/go#278774).
+       // TOOD(rstambler): Remove the recover once the issue has been fixed
+       // upstream.
+       defer func() {
+               if r := recover(); r != nil {
+                       edits = nil
+                       err = fmt.Errorf("unable to compute edits for %s: %s", uri.Filename(), r)
+               }
+       }()
+       diffs := diffmatchpatch.New().DiffMain(before, after, true)
+       edits = make([]diff.TextEdit, 0, len(diffs))
+       offset := 0
+       for _, d := range diffs {
+               start := span.NewPoint(0, 0, offset)
+               switch d.Type {
+               case diffmatchpatch.DiffDelete:
+                       offset += len(d.Text)
+                       edits = append(edits, diff.TextEdit{Span: span.New(uri, start, span.NewPoint(0, 0, offset))})
+               case diffmatchpatch.DiffEqual:
+                       offset += len(d.Text)
+               case diffmatchpatch.DiffInsert:
+                       edits = append(edits, diff.TextEdit{Span: span.New(uri, start, span.Point{}), NewText: d.Text})
+               }
+       }
+       return edits, nil
+}