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https://github.com/golang/go
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a26de0c301
this supports sub-line diffs and is much faster Fixes golang/go#33003 Fixes golang/go#32586 Updates golang/go#31937 Change-Id: I02f82c75828e7e3ec804e8beee916893d4c14b3d Reviewed-on: https://go-review.googlesource.com/c/tools/+/191018 Run-TryBot: Ian Cottrell <iancottrell@google.com> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
31 lines
953 B
Go
31 lines
953 B
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package hooks
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import (
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"github.com/sergi/go-diff/diffmatchpatch"
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"golang.org/x/tools/internal/lsp/diff"
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"golang.org/x/tools/internal/span"
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)
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func ComputeEdits(uri span.URI, before, after string) []diff.TextEdit {
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diffs := diffmatchpatch.New().DiffMain(before, after, true)
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edits := make([]diff.TextEdit, 0, len(diffs))
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offset := 0
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for _, d := range diffs {
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start := span.NewPoint(0, 0, offset)
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switch d.Type {
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case diffmatchpatch.DiffDelete:
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offset += len(d.Text)
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edits = append(edits, diff.TextEdit{Span: span.New(uri, start, span.NewPoint(0, 0, offset))})
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case diffmatchpatch.DiffEqual:
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offset += len(d.Text)
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case diffmatchpatch.DiffInsert:
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edits = append(edits, diff.TextEdit{Span: span.New(uri, start, span.Point{}), NewText: d.Text})
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}
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}
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return edits
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}
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