| 1 | "use strict";
|
| 2 |
|
| 3 | Object.defineProperty(exports, "__esModule", {
|
| 4 | value: true
|
| 5 | });
|
| 6 | exports.canSkipRegexpu = canSkipRegexpu;
|
| 7 | exports.generateRegexpuOptions = generateRegexpuOptions;
|
| 8 | exports.transformFlags = transformFlags;
|
| 9 | var _features = require("./features.js");
|
| 10 | function generateRegexpuOptions(pattern, toTransform) {
|
| 11 | const feat = (name, ok = "transform") => {
|
| 12 | return (0, _features.hasFeature)(toTransform, _features.FEATURES[name]) ? ok : false;
|
| 13 | };
|
| 14 | const featDuplicateNamedGroups = () => {
|
| 15 | if (!feat("duplicateNamedCaptureGroups")) return false;
|
| 16 | const regex = /\(\?<([^>]+)>/g;
|
| 17 | const seen = new Set();
|
| 18 | for (let match; match = regex.exec(pattern); seen.add(match[1])) {
|
| 19 | if (seen.has(match[1])) return "transform";
|
| 20 | }
|
| 21 | return false;
|
| 22 | };
|
| 23 | return {
|
| 24 | unicodeFlag: feat("unicodeFlag"),
|
| 25 | unicodeSetsFlag: feat("unicodeSetsFlag") || "parse",
|
| 26 | dotAllFlag: feat("dotAllFlag"),
|
| 27 | unicodePropertyEscapes: feat("unicodePropertyEscape"),
|
| 28 | namedGroups: feat("namedCaptureGroups") || featDuplicateNamedGroups(),
|
| 29 | onNamedGroup: () => {},
|
| 30 | modifiers: feat("modifiers")
|
| 31 | };
|
| 32 | }
|
| 33 | function canSkipRegexpu(node, options) {
|
| 34 | const {
|
| 35 | flags,
|
| 36 | pattern
|
| 37 | } = node;
|
| 38 | if (flags.includes("v")) {
|
| 39 | if (options.unicodeSetsFlag === "transform") return false;
|
| 40 | }
|
| 41 | if (flags.includes("u")) {
|
| 42 | if (options.unicodeFlag === "transform") return false;
|
| 43 | if (options.unicodePropertyEscapes === "transform" && /\\[pP]{/.test(pattern)) {
|
| 44 | return false;
|
| 45 | }
|
| 46 | }
|
| 47 | if (flags.includes("s")) {
|
| 48 | if (options.dotAllFlag === "transform") return false;
|
| 49 | }
|
| 50 | if (options.namedGroups === "transform" && /\(\?<(?![=!])/.test(pattern)) {
|
| 51 | return false;
|
| 52 | }
|
| 53 | if (options.modifiers === "transform" && /\(\?[\w-]+:/.test(pattern)) {
|
| 54 | return false;
|
| 55 | }
|
| 56 | return true;
|
| 57 | }
|
| 58 | function transformFlags(regexpuOptions, flags) {
|
| 59 | if (regexpuOptions.unicodeSetsFlag === "transform") {
|
| 60 | flags = flags.replace("v", "u");
|
| 61 | }
|
| 62 | if (regexpuOptions.unicodeFlag === "transform") {
|
| 63 | flags = flags.replace("u", "");
|
| 64 | }
|
| 65 | if (regexpuOptions.dotAllFlag === "transform") {
|
| 66 | flags = flags.replace("s", "");
|
| 67 | }
|
| 68 | return flags;
|
| 69 | }
|
| 70 |
|
| 71 |
|