1// Copyright 2018 The Go Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5package language 6 7// CompactCoreInfo is a compact integer with the three core tags encoded. 8type CompactCoreInfo uint32 9 10// GetCompactCore generates a uint32 value that is guaranteed to be unique for 11// different language, region, and script values. 12func GetCompactCore(t Tag) (cci CompactCoreInfo, ok bool) { 13 if t.LangID > langNoIndexOffset { 14 return 0, false 15 } 16 cci |= CompactCoreInfo(t.LangID) << (8 + 12) 17 cci |= CompactCoreInfo(t.ScriptID) << 12 18 cci |= CompactCoreInfo(t.RegionID) 19 return cci, true 20} 21 22// Tag generates a tag from c. 23func (c CompactCoreInfo) Tag() Tag { 24 return Tag{ 25 LangID: Language(c >> 20), 26 RegionID: Region(c & 0x3ff), 27 ScriptID: Script(c>>12) & 0xff, 28 } 29} 30