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