barometer: update DMA's vendoring packages

[barometer.git] / src / dma / vendor / golang.org / x / text / internal / language / compact.go

diff --git a/src/dma/vendor/golang.org/x/text/internal/language/compact.go b/src/dma/vendor/golang.org/x/text/internal/language/compact.go
new file mode 100644 (file)
index 0000000..46a0015
--- /dev/null
+++ b/src/dma/vendor/golang.org/x/text/internal/language/compact.go
@@ -0,0 +1,29 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package language
+
+// CompactCoreInfo is a compact integer with the three core tags encoded.
+type CompactCoreInfo uint32
+
+// GetCompactCore generates a uint32 value that is guaranteed to be unique for
+// different language, region, and script values.
+func GetCompactCore(t Tag) (cci CompactCoreInfo, ok bool) {
+       if t.LangID > langNoIndexOffset {
+               return 0, false
+       }
+       cci |= CompactCoreInfo(t.LangID) << (8 + 12)
+       cci |= CompactCoreInfo(t.ScriptID) << 12
+       cci |= CompactCoreInfo(t.RegionID)
+       return cci, true
+}
+
+// Tag generates a tag from c.
+func (c CompactCoreInfo) Tag() Tag {
+       return Tag{
+               LangID:   Language(c >> 20),
+               RegionID: Region(c & 0x3ff),
+               ScriptID: Script(c>>12) & 0xff,
+       }
+}