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jsx.ts
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/
jsx.ts
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/*
* 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.
*/
import type { TSESTree } from '@typescript-eslint/experimental-utils';
export function getJsxShortCircuitNodes(logicalExpression: TSESTree.LogicalExpression) {
if (logicalExpression.parent?.type !== 'JSXExpressionContainer') {
return null;
} else {
return flattenJsxShortCircuitNodes(logicalExpression, logicalExpression);
}
}
function flattenJsxShortCircuitNodes(
root: TSESTree.LogicalExpression,
node: TSESTree.Node,
): TSESTree.LogicalExpression[] | null {
if (
node.type === 'ConditionalExpression' ||
(node.type === 'LogicalExpression' && node.operator !== root.operator)
) {
return null;
} else if (node.type !== 'LogicalExpression') {
return [];
} else {
const leftNodes = flattenJsxShortCircuitNodes(root, node.left);
const rightNodes = flattenJsxShortCircuitNodes(root, node.right);
if (leftNodes == null || rightNodes == null) {
return null;
}
return [...leftNodes, node, ...rightNodes];
}
}