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