eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
81 lines (80 loc) • 3.71 kB
JavaScript
;
/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011-2024 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/S3973/javascript
Object.defineProperty(exports, "__esModule", { value: true });
exports.rule = void 0;
const helpers_1 = require("../helpers");
const meta_1 = require("./meta");
exports.rule = {
meta: (0, helpers_1.generateMeta)(meta_1.meta, undefined, true),
create(context) {
const sourceCode = context.sourceCode;
return {
IfStatement: (node) => {
const ifStatement = node;
const parent = (0, helpers_1.getParent)(context, node);
if (parent && parent.type !== 'IfStatement') {
const firstToken = sourceCode.getFirstToken(node);
checkIndentation(firstToken, ifStatement.consequent, context);
}
if (ifStatement.alternate) {
const elseToken = sourceCode.getTokenBefore(ifStatement.alternate, token => token.type === 'Keyword' && token.value === 'else');
const alternate = ifStatement.alternate;
if (alternate.type === 'IfStatement') {
//case with "else if", we have to check the consequent of the next if
checkIndentation(elseToken, alternate.consequent, context);
}
else {
checkIndentation(getPrecedingBrace(elseToken, sourceCode) ?? elseToken, alternate, context, elseToken);
}
}
},
'WhileStatement, ForStatement, ForInStatement, ForOfStatement': (node) => {
const firstToken = sourceCode.getFirstToken(node);
checkIndentation(firstToken, node.body, context);
},
};
},
};
function checkIndentation(firstToken, statement, context, tokenToReport = firstToken) {
if (firstToken && tokenToReport && statement.type !== 'BlockStatement') {
const firstStatementToken = context.sourceCode.getFirstToken(statement);
if (firstStatementToken &&
firstToken.loc.start.column >= firstStatementToken.loc.start.column) {
const message = `Use curly braces or indentation to denote the code conditionally ` +
`executed by this "${tokenToReport.value}".`;
(0, helpers_1.report)(context, {
message,
loc: tokenToReport.loc,
}, [(0, helpers_1.toSecondaryLocation)(firstStatementToken)]);
}
}
}
function getPrecedingBrace(elseToken, sourceCode) {
if (elseToken) {
const tokenBeforeElse = sourceCode.getTokenBefore(elseToken);
if (tokenBeforeElse?.value === '}' &&
tokenBeforeElse.loc.start.line === elseToken.loc.start.line) {
return tokenBeforeElse;
}
}
return undefined;
}