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// 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 mod
import (
"context"
"golang.org/x/tools/gopls/internal/lsp/protocol"
"golang.org/x/tools/gopls/internal/lsp/source"
"golang.org/x/tools/internal/event"
)
func Format(ctx context.Context, snapshot source.Snapshot, fh source.FileHandle) ([]protocol.TextEdit, error) {
ctx, done := event.Start(ctx, "mod.Format")
defer done()
pm, err := snapshot.ParseMod(ctx, fh)
if err != nil {
return nil, err
}
formatted, err := pm.File.Format()
if err != nil {
return nil, err
}
// Calculate the edits to be made due to the change.
diffs := snapshot.View().Options().ComputeEdits(string(pm.Mapper.Content), string(formatted))
return source.ToProtocolEdits(pm.Mapper, diffs)
}
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