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30 lines
853 B
Go
Vendored
30 lines
853 B
Go
Vendored
// 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 language
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// CompactCoreInfo is a compact integer with the three core tags encoded.
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type CompactCoreInfo uint32
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// GetCompactCore generates a uint32 value that is guaranteed to be unique for
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// different language, region, and script values.
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func GetCompactCore(t Tag) (cci CompactCoreInfo, ok bool) {
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if t.LangID > langNoIndexOffset {
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return 0, false
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}
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cci |= CompactCoreInfo(t.LangID) << (8 + 12)
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cci |= CompactCoreInfo(t.ScriptID) << 12
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cci |= CompactCoreInfo(t.RegionID)
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return cci, true
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}
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// Tag generates a tag from c.
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func (c CompactCoreInfo) Tag() Tag {
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return Tag{
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LangID: Language(c >> 20),
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RegionID: Region(c & 0x3ff),
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ScriptID: Script(c>>12) & 0xff,
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}
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}
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