aboutsummaryrefslogtreecommitdiffstats
path: root/vendor/golang.org/x/text/secure/precis/trieval.go
blob: 4833f9622a989bf7723bbd429101fe54dddb6c49 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.

package precis

// entry is the entry of a trie table
// 7..6   property (unassigned, disallowed, maybe, valid)
// 5..0   category
type entry uint8

const (
	propShift = 6
	propMask  = 0xc0
	catMask   = 0x3f
)

func (e entry) property() property { return property(e & propMask) }
func (e entry) category() category { return category(e & catMask) }

type property uint8

// The order of these constants matter. A Profile may consider runes to be
// allowed either from pValid or idDisOrFreePVal.
const (
	unassigned property = iota << propShift
	disallowed
	idDisOrFreePVal // disallowed for Identifier, pValid for FreeForm
	pValid
)

// compute permutations of all properties and specialCategories.
type category uint8

const (
	other category = iota

	// Special rune types
	joiningL
	joiningD
	joiningT
	joiningR
	viramaModifier
	viramaJoinT // Virama + JoiningT
	latinSmallL // U+006c
	greek
	greekJoinT // Greek + JoiningT
	hebrew
	hebrewJoinT // Hebrew + JoiningT
	japanese    // hirigana, katakana, han

	// Special rune types associated with contextual rules defined in
	// https://tools.ietf.org/html/rfc5892#appendix-A.
	// ContextO
	zeroWidthNonJoiner // rule 1
	zeroWidthJoiner    // rule 2
	// ContextJ
	middleDot                // rule 3
	greekLowerNumeralSign    // rule 4
	hebrewPreceding          // rule 5 and 6
	katakanaMiddleDot        // rule 7
	arabicIndicDigit         // rule 8
	extendedArabicIndicDigit // rule 9

	numCategories
)