eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
49 lines • 1.97 kB
JavaScript
;
/*
* eslint-plugin-sonarjs
* Copyright (C) 2018 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://jira.sonarsource.com/browse/RSPEC-1940
const nodes_1 = require("../utils/nodes");
const equivalence_1 = require("../utils/equivalence");
const MESSAGE = "Add logic to this catch clause or eliminate it and rethrow the exception automatically.";
const rule = {
meta: {
type: "suggestion",
},
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({
message: MESSAGE,
loc: catchKeyword.loc,
});
}
}
function onlyRethrows(statement, catchParam, sourceCode) {
return nodes_1.isThrowStatement(statement) && equivalence_1.areEquivalent(catchParam, statement.argument, sourceCode);
}
module.exports = rule;
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