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29 lines
853 B
29 lines
853 B
// 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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