mirror of
https://github.com/golang/go
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40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
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// Copyright 2018 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 source
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import (
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"bytes"
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"context"
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"go/format"
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)
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// Format formats a document with a given range.
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func Format(ctx context.Context, f *File, rng Range) ([]TextEdit, error) {
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fAST, err := f.GetAST()
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if err != nil {
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return nil, err
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}
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// TODO(rstambler): use astutil.PathEnclosingInterval to
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// find the largest ast.Node n contained within start:end, and format the
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// region n.Pos-n.End instead.
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// format.Node changes slightly from one release to another, so the version
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// of Go used to build the LSP server will determine how it formats code.
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// This should be acceptable for all users, who likely be prompted to rebuild
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// the LSP server on each Go release.
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buf := &bytes.Buffer{}
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if err := format.Node(buf, f.view.Config.Fset, fAST); err != nil {
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return nil, err
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}
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// TODO(rstambler): Compute text edits instead of replacing whole file.
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return []TextEdit{
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{
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Range: rng,
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NewText: buf.String(),
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},
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}, nil
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}
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