| // Copyright 2015 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. |
| |
| // +build ignore |
| |
| package main |
| |
| // 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 |
| ) |
