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add Max UUID #144

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add Max UUID #144

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2ae139b
add uuid version 6 and 7
it512 Nov 15, 2023
58ccfad
fix comment
it512 Nov 21, 2023
c585488
Merge branch 'google:master' into master
it512 Nov 26, 2023
349c65d
max uuid
it512 Dec 8, 2023
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10 changes: 8 additions & 2 deletions hash.go
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,12 @@ var (
NameSpaceOID = Must(Parse("6ba7b812-9dad-11d1-80b4-00c04fd430c8"))
NameSpaceX500 = Must(Parse("6ba7b814-9dad-11d1-80b4-00c04fd430c8"))
Nil UUID // empty UUID, all zeros

// The Max UUID is special form of UUID that is specified to have all 128 bits set to 1.
MAX = UUID{
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This should be Max or MaxUUID.

0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
}
)

// NewHash returns a new UUID derived from the hash of space concatenated with
Expand All @@ -39,15 +45,15 @@ func NewHash(h hash.Hash, space UUID, data []byte, version int) UUID {
// NewMD5 returns a new MD5 (Version 3) UUID based on the
// supplied name space and data. It is the same as calling:
//
// NewHash(md5.New(), space, data, 3)
// NewHash(md5.New(), space, data, 3)
func NewMD5(space UUID, data []byte) UUID {
return NewHash(md5.New(), space, data, 3)
}

// NewSHA1 returns a new SHA1 (Version 5) UUID based on the
// supplied name space and data. It is the same as calling:
//
// NewHash(sha1.New(), space, data, 5)
// NewHash(sha1.New(), space, data, 5)
func NewSHA1(space UUID, data []byte) UUID {
return NewHash(sha1.New(), space, data, 5)
}
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