eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
67 lines • 2.8 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-3626
const nodes_1 = require("../utils/nodes");
const message = "Remove this redundant jump.";
const loops = "WhileStatement, ForStatement, DoWhileStatement, ForInStatement, ForOfStatement";
const rule = {
meta: {
type: "suggestion",
},
create(context) {
function reportIfLastStatement(node) {
const withArgument = node.type === "ContinueStatement" ? !!node.label : !!node.argument;
if (!withArgument) {
const block = nodes_1.getParent(context);
if (block.body[block.body.length - 1] === node && block.body.length > 1) {
context.report({
message,
node,
});
}
}
}
function reportIfLastStatementInsideIf(node) {
const ancestors = context.getAncestors();
const ifStatement = ancestors[ancestors.length - 2];
const upperBlock = ancestors[ancestors.length - 3];
if (upperBlock.body[upperBlock.body.length - 1] === ifStatement) {
reportIfLastStatement(node);
}
}
return {
[`:matches(${loops}) > BlockStatement > ContinueStatement`]: (node) => {
reportIfLastStatement(node);
},
[`:matches(${loops}) > BlockStatement > IfStatement > BlockStatement > ContinueStatement`]: (node) => {
reportIfLastStatementInsideIf(node);
},
":function > BlockStatement > ReturnStatement": (node) => {
reportIfLastStatement(node);
},
":function > BlockStatement > IfStatement > BlockStatement > ReturnStatement": (node) => {
reportIfLastStatementInsideIf(node);
},
};
},
};
module.exports = rule;
//# sourceMappingURL=no-redundant-jump.js.map