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authorMichaël Zasso <targos@protonmail.com>2017-12-22 16:53:42 +0100
committerMichaël Zasso <targos@protonmail.com>2018-01-11 09:48:05 +0100
commit3dc30632755713179f345f4af024bd904c6162d0 (patch)
treef28c4f6dd6dfc5992edf301449d1a371d229755b /tools/node_modules/eslint/lib/rules/no-unsafe-finally.js
parenta2c7085dd4a8e60d1a47572aca8bb6fcb7a32f88 (diff)
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tools: move eslint from tools to tools/node_modules
This is required because we need to add the babel-eslint dependency and it has to be able to resolve "eslint". babel-eslint is required to support future ES features such as async iterators and import.meta. Refs: https://github.com/nodejs/node/pull/17755 PR-URL: https://github.com/nodejs/node/pull/17820 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
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1 files changed, 104 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/no-unsafe-finally.js b/tools/node_modules/eslint/lib/rules/no-unsafe-finally.js
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+++ b/tools/node_modules/eslint/lib/rules/no-unsafe-finally.js
@@ -0,0 +1,104 @@
+/**
+ * @fileoverview Rule to flag unsafe statements in finally block
+ * @author Onur Temizkan
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const SENTINEL_NODE_TYPE_RETURN_THROW = /^(?:Program|(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression)$/;
+const SENTINEL_NODE_TYPE_BREAK = /^(?:Program|(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression|DoWhileStatement|WhileStatement|ForOfStatement|ForInStatement|ForStatement|SwitchStatement)$/;
+const SENTINEL_NODE_TYPE_CONTINUE = /^(?:Program|(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression|DoWhileStatement|WhileStatement|ForOfStatement|ForInStatement|ForStatement)$/;
+
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+ meta: {
+ docs: {
+ description: "disallow control flow statements in `finally` blocks",
+ category: "Possible Errors",
+ recommended: true
+ },
+
+ schema: []
+ },
+ create(context) {
+
+ /**
+ * Checks if the node is the finalizer of a TryStatement
+ *
+ * @param {ASTNode} node - node to check.
+ * @returns {boolean} - true if the node is the finalizer of a TryStatement
+ */
+ function isFinallyBlock(node) {
+ return node.parent.type === "TryStatement" && node.parent.finalizer === node;
+ }
+
+ /**
+ * Climbs up the tree if the node is not a sentinel node
+ *
+ * @param {ASTNode} node - node to check.
+ * @param {string} label - label of the break or continue statement
+ * @returns {boolean} - return whether the node is a finally block or a sentinel node
+ */
+ function isInFinallyBlock(node, label) {
+ let labelInside = false;
+ let sentinelNodeType;
+
+ if (node.type === "BreakStatement" && !node.label) {
+ sentinelNodeType = SENTINEL_NODE_TYPE_BREAK;
+ } else if (node.type === "ContinueStatement") {
+ sentinelNodeType = SENTINEL_NODE_TYPE_CONTINUE;
+ } else {
+ sentinelNodeType = SENTINEL_NODE_TYPE_RETURN_THROW;
+ }
+
+ while (node && !sentinelNodeType.test(node.type)) {
+ if (node.parent.label && label && (node.parent.label.name === label.name)) {
+ labelInside = true;
+ }
+ if (isFinallyBlock(node)) {
+ if (label && labelInside) {
+ return false;
+ }
+ return true;
+ }
+ node = node.parent;
+ }
+ return false;
+ }
+
+ /**
+ * Checks whether the possibly-unsafe statement is inside a finally block.
+ *
+ * @param {ASTNode} node - node to check.
+ * @returns {void}
+ */
+ function check(node) {
+ if (isInFinallyBlock(node, node.label)) {
+ context.report({
+ message: "Unsafe usage of {{nodeType}}.",
+ data: {
+ nodeType: node.type
+ },
+ node,
+ line: node.loc.line,
+ column: node.loc.column
+ });
+ }
+ }
+
+ return {
+ ReturnStatement: check,
+ ThrowStatement: check,
+ BreakStatement: check,
+ ContinueStatement: check
+ };
+ }
+};