quran/node_modules/eslint-plugin-sonarjs/lib/rules/no-useless-catch.js

"use strict";
/*
 * eslint-plugin-sonarjs
 * Copyright (C) 2018-2021 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 GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * 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 GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
// https://sonarsource.github.io/rspec/#/rspec/S1940
const nodes_1 = require("../utils/nodes");
const equivalence_1 = require("../utils/equivalence");
const docs_url_1 = require("../utils/docs-url");
const rule = {
    meta: {
        messages: {
            uselessCatch: 'Add logic to this catch clause or eliminate it and rethrow the exception automatically.',
        },
        schema: [],
        type: 'suggestion',
        docs: {
            description: '"catch" clauses should do more than rethrow',
            recommended: 'error',
            url: (0, docs_url_1.default)(__filename),
        },
    },
    create(context) {
        return {
            CatchClause: (node) => visitCatchClause(node, context),
        };
    },
};
function visitCatchClause(catchClause, context) {
    const statements = catchClause.body.body;
    if (catchClause.param &&
        statements.length === 1 &&
        onlyRethrows(statements[0], catchClause.param, context.getSourceCode())) {
        const catchKeyword = context.getSourceCode().getFirstToken(catchClause);
        context.report({
            messageId: 'uselessCatch',
            loc: catchKeyword.loc,
        });
    }
}
function onlyRethrows(statement, catchParam, sourceCode) {
    return ((0, nodes_1.isThrowStatement)(statement) &&
        catchParam !== null &&
        statement.argument !== null &&
        (0, equivalence_1.areEquivalent)(catchParam, statement.argument, sourceCode));
}
module.exports = rule;
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