eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
61 lines (60 loc) • 2.89 kB
JavaScript
;
/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the Sonar Source-Available License Version 1, as published by SonarSource SA.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the Sonar Source-Available License for more details.
*
* You should have received a copy of the Sonar Source-Available License
* along with this program; if not, see https://sonarsource.com/license/ssal/
*/
// https://sonarsource.github.io/rspec/#/rspec/S5869/javascript
Object.defineProperty(exports, "__esModule", { value: true });
exports.rule = void 0;
const index_js_1 = require("../helpers/index.js");
const meta_js_1 = require("./meta.js");
const rule_template_js_1 = require("../helpers/regex/rule-template.js");
const simplified_regex_character_class_js_1 = require("../helpers/regex/simplified-regex-character-class.js");
const location_js_1 = require("../helpers/regex/location.js");
exports.rule = (0, rule_template_js_1.createRegExpRule)(context => {
let flags;
return {
onRegExpLiteralEnter: (node) => {
flags = node.flags;
},
onCharacterClassEnter: (node) => {
const duplicates = new Set();
const characterClass = new simplified_regex_character_class_js_1.SimplifiedRegexCharacterClass(flags);
node.elements.forEach(element => {
const intersections = new simplified_regex_character_class_js_1.SimplifiedRegexCharacterClass(flags, element).findIntersections(characterClass);
if (intersections.length > 0) {
intersections.forEach(intersection => duplicates.add(intersection));
duplicates.add(element);
}
characterClass.add(element);
});
if (duplicates.size > 0) {
const [primary, ...secondaries] = duplicates;
const secondaryLocations = [];
for (const secondary of secondaries) {
const loc = (0, location_js_1.getRegexpLocation)(context.node, secondary, context);
if (loc) {
secondaryLocations.push((0, index_js_1.toSecondaryLocation)({ loc }, 'Additional duplicate'));
}
}
context.reportRegExpNode({
message: 'Remove duplicates in this character class.',
node: context.node,
regexpNode: primary,
}, secondaryLocations);
}
},
};
}, (0, index_js_1.generateMeta)(meta_js_1.meta, undefined, true));