| [81bc7da] | 1 | "use strict";
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| 2 | var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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| 3 | if (k2 === undefined) k2 = k;
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| 4 | var desc = Object.getOwnPropertyDescriptor(m, k);
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| 5 | if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
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| 6 | desc = { enumerable: true, get: function() { return m[k]; } };
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| 7 | }
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| 8 | Object.defineProperty(o, k2, desc);
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| 9 | }) : (function(o, m, k, k2) {
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| 10 | if (k2 === undefined) k2 = k;
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| 11 | o[k2] = m[k];
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| 12 | }));
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| 13 | var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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| 14 | Object.defineProperty(o, "default", { enumerable: true, value: v });
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| 15 | }) : function(o, v) {
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| 16 | o["default"] = v;
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| 17 | });
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| 18 | var __importStar = (this && this.__importStar) || function (mod) {
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| 19 | if (mod && mod.__esModule) return mod;
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| 20 | var result = {};
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| 21 | if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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| 22 | __setModuleDefault(result, mod);
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| 23 | return result;
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| 24 | };
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| 25 | Object.defineProperty(exports, "__esModule", { value: true });
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| 26 | exports.ADDRESS_BOUNDARY = void 0;
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| 27 | exports.groupPossibilities = groupPossibilities;
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| 28 | exports.padGroup = padGroup;
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| 29 | exports.simpleRegularExpression = simpleRegularExpression;
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| 30 | exports.possibleElisions = possibleElisions;
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| 31 | const v6 = __importStar(require("./constants"));
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| 32 | function groupPossibilities(possibilities) {
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| 33 | return `(${possibilities.join('|')})`;
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| 34 | }
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| 35 | function padGroup(group) {
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| 36 | if (group.length < 4) {
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| 37 | return `0{0,${4 - group.length}}${group}`;
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| 38 | }
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| 39 | return group;
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| 40 | }
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| 41 | exports.ADDRESS_BOUNDARY = '[^A-Fa-f0-9:]';
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| 42 | function simpleRegularExpression(groups) {
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| 43 | const zeroIndexes = [];
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| 44 | groups.forEach((group, i) => {
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| 45 | const groupInteger = parseInt(group, 16);
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| 46 | if (groupInteger === 0) {
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| 47 | zeroIndexes.push(i);
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| 48 | }
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| 49 | });
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| 50 | // You can technically elide a single 0, this creates the regular expressions
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| 51 | // to match that eventuality
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| 52 | const possibilities = zeroIndexes.map((zeroIndex) => groups
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| 53 | .map((group, i) => {
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| 54 | if (i === zeroIndex) {
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| 55 | const elision = i === 0 || i === v6.GROUPS - 1 ? ':' : '';
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| 56 | return groupPossibilities([padGroup(group), elision]);
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| 57 | }
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| 58 | return padGroup(group);
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| 59 | })
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| 60 | .join(':'));
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| 61 | // The simplest case
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| 62 | possibilities.push(groups.map(padGroup).join(':'));
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| 63 | return groupPossibilities(possibilities);
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| 64 | }
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| 65 | function possibleElisions(elidedGroups, moreLeft, moreRight) {
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| 66 | const left = moreLeft ? '' : ':';
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| 67 | const right = moreRight ? '' : ':';
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| 68 | const possibilities = [];
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| 69 | // 1. elision of everything (::)
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| 70 | if (!moreLeft && !moreRight) {
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| 71 | possibilities.push('::');
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| 72 | }
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| 73 | // 2. complete elision of the middle
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| 74 | if (moreLeft && moreRight) {
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| 75 | possibilities.push('');
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| 76 | }
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| 77 | if ((moreRight && !moreLeft) || (!moreRight && moreLeft)) {
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| 78 | // 3. complete elision of one side
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| 79 | possibilities.push(':');
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| 80 | }
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| 81 | // 4. elision from the left side
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| 82 | possibilities.push(`${left}(:0{1,4}){1,${elidedGroups - 1}}`);
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| 83 | // 5. elision from the right side
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| 84 | possibilities.push(`(0{1,4}:){1,${elidedGroups - 1}}${right}`);
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| 85 | // 6. no elision
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| 86 | possibilities.push(`(0{1,4}:){${elidedGroups - 1}}0{1,4}`);
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| 87 | // 7. elision (including sloppy elision) from the middle
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| 88 | for (let groups = 1; groups < elidedGroups - 1; groups++) {
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| 89 | for (let position = 1; position < elidedGroups - groups; position++) {
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| 90 | possibilities.push(`(0{1,4}:){${position}}:(0{1,4}:){${elidedGroups - position - groups - 1}}0{1,4}`);
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| 91 | }
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| 92 | }
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| 93 | return groupPossibilities(possibilities);
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| 94 | }
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| 95 | //# sourceMappingURL=regular-expressions.js.map |
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