mirror of
https://github.com/golang/go.git
synced 2025-05-05 23:53:05 +00:00
cc9bfb3eec
It is now in the diff package written in terms of edits, instead of the myers package. This also means that the unified handling is no longer pluggable because it does not need to be. Change-Id: I7141b023e95ed0c1d21cbc81c7420c117fc5ef1a Reviewed-on: https://go-review.googlesource.com/c/tools/+/198517 Run-TryBot: Ian Cottrell <iancottrell@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
63 lines
1.5 KiB
Go
63 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 myers
|
|
|
|
import (
|
|
"strings"
|
|
|
|
"golang.org/x/tools/internal/lsp/diff"
|
|
"golang.org/x/tools/internal/span"
|
|
)
|
|
|
|
func ComputeEdits(uri span.URI, before, after string) []diff.TextEdit {
|
|
u := SplitLines(before)
|
|
f := SplitLines(after)
|
|
return myersDiffToEdits(uri, Operations(u, f))
|
|
}
|
|
|
|
func myersDiffToEdits(uri span.URI, ops []*Op) []diff.TextEdit {
|
|
edits := make([]diff.TextEdit, 0, len(ops))
|
|
for _, op := range ops {
|
|
s := span.New(uri, span.NewPoint(op.I1+1, 1, 0), span.NewPoint(op.I2+1, 1, 0))
|
|
switch op.Kind {
|
|
case diff.Delete:
|
|
// Delete: unformatted[i1:i2] is deleted.
|
|
edits = append(edits, diff.TextEdit{Span: s})
|
|
case diff.Insert:
|
|
// Insert: formatted[j1:j2] is inserted at unformatted[i1:i1].
|
|
if content := strings.Join(op.Content, ""); content != "" {
|
|
edits = append(edits, diff.TextEdit{Span: s, NewText: content})
|
|
}
|
|
}
|
|
}
|
|
return edits
|
|
}
|
|
|
|
func myersEditsToDiff(edits []diff.TextEdit) []*Op {
|
|
iToJ := 0
|
|
ops := make([]*Op, len(edits))
|
|
for i, edit := range edits {
|
|
i1 := edit.Span.Start().Line() - 1
|
|
i2 := edit.Span.End().Line() - 1
|
|
kind := diff.Insert
|
|
if edit.NewText == "" {
|
|
kind = diff.Delete
|
|
}
|
|
ops[i] = &Op{
|
|
Kind: kind,
|
|
Content: SplitLines(edit.NewText),
|
|
I1: i1,
|
|
I2: i2,
|
|
J1: i1 + iToJ,
|
|
}
|
|
if kind == diff.Insert {
|
|
iToJ += len(ops[i].Content)
|
|
} else {
|
|
iToJ -= i2 - i1
|
|
}
|
|
}
|
|
return ops
|
|
}
|