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// Copyright 2019, OpenCensus Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ochttp
import (
"io"
)
// wrappedBody returns a wrapped version of the original
// Body and only implements the same combination of additional
// interfaces as the original.
func wrappedBody(wrapper io.ReadCloser, body io.ReadCloser) io.ReadCloser {
var (
wr, i0 = body.(io.Writer)
)
switch {
case !i0:
return struct {
io.ReadCloser
}{wrapper}
case i0:
return struct {
io.ReadCloser
io.Writer
}{wrapper, wr}
default:
return struct {
io.ReadCloser
}{wrapper}
}
}
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