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// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
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// Copyright 2016 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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//go:build go1.16
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package idna
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// appendMapping appends the mapping for the respective rune. isMapped must be
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// true. A mapping is a categorization of a rune as defined in UTS #46.
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func (c info) appendMapping(b []byte, s string) []byte {
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	index := int(c >> indexShift)
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	if c&xorBit == 0 {
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		p := index
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		return append(b, mappings[mappingIndex[p]:mappingIndex[p+1]]...)
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	}
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	b = append(b, s...)
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	if c&inlineXOR == inlineXOR {
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		// TODO: support and handle two-byte inline masks
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		b[len(b)-1] ^= byte(index)
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	} else {
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		for p := len(b) - int(xorData[index]); p < len(b); p++ {
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			index++
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			b[p] ^= xorData[index]
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		}
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	}
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	return b
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}
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