1 files changed, 136 insertions, 0 deletions
diff --git a/node_modules/tslint/lib/rules/noUnsafeFinallyRule.js b/node_modules/tslint/lib/rules/noUnsafeFinallyRule.js
new file mode 100644
index 000000000..74710ce46
--- /dev/null
+++ b/node_modules/tslint/lib/rules/noUnsafeFinallyRule.js
@@ -0,0 +1,136 @@
+"use strict";
+/**
+ * @license
+ * Copyright 2016 Palantir Technologies, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+var tslib_1 = require("tslib");
+var utils = require("tsutils");
+var ts = require("typescript");
+var Lint = require("../index");
+var Rule = (function (_super) {
+    tslib_1.__extends(Rule, _super);
+    function Rule() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    /* tslint:enable:object-literal-sort-keys */
+    Rule.FAILURE_STRING = function (name) {
+        return "'" + name + "' statements in finally blocks are forbidden.";
+    };
+    Rule.prototype.apply = function (sourceFile) {
+        return this.applyWithFunction(sourceFile, walk);
+    };
+    return Rule;
+}(Lint.Rules.AbstractRule));
+/* tslint:disable:object-literal-sort-keys */
+Rule.metadata = {
+    ruleName: "no-unsafe-finally",
+    description: (_a = ["\n            Disallows control flow statements, such as `return`, `continue`,\n            `break` and `throws` in finally blocks."], _a.raw = ["\n            Disallows control flow statements, such as \\`return\\`, \\`continue\\`,\n            \\`break\\` and \\`throws\\` in finally blocks."], Lint.Utils.dedent(_a)),
+    descriptionDetails: "",
+    rationale: (_b = ["\n            When used inside `finally` blocks, control flow statements,\n            such as `return`, `continue`, `break` and `throws`\n            override any other control flow statements in the same try/catch scope.\n            This is confusing and unexpected behavior."], _b.raw = ["\n            When used inside \\`finally\\` blocks, control flow statements,\n            such as \\`return\\`, \\`continue\\`, \\`break\\` and \\`throws\\`\n            override any other control flow statements in the same try/catch scope.\n            This is confusing and unexpected behavior."], Lint.Utils.dedent(_b)),
+    optionsDescription: "Not configurable.",
+    options: null,
+    optionExamples: [true],
+    type: "functionality",
+    typescriptOnly: false,
+};
+exports.Rule = Rule;
+function walk(ctx) {
+    var inFinally = false;
+    ts.forEachChild(ctx.sourceFile, function cb(node) {
+        switch (node.kind) {
+            case ts.SyntaxKind.TryStatement:
+                var _a = node, tryBlock = _a.tryBlock, catchClause = _a.catchClause, finallyBlock = _a.finallyBlock;
+                ts.forEachChild(tryBlock, cb);
+                if (catchClause !== undefined) {
+                    ts.forEachChild(catchClause, cb);
+                }
+                if (finallyBlock !== undefined) {
+                    var old = inFinally;
+                    inFinally = true;
+                    cb(finallyBlock);
+                    inFinally = old;
+                }
+                break;
+            case ts.SyntaxKind.BreakStatement:
+            case ts.SyntaxKind.ContinueStatement:
+            case ts.SyntaxKind.ThrowStatement:
+            case ts.SyntaxKind.ReturnStatement:
+                if (inFinally && !jumpIsLocalToFinallyBlock(node)) {
+                    ctx.addFailureAtNode(node, Rule.FAILURE_STRING(printJumpKind(node)));
+                }
+            // falls through
+            default:
+                return ts.forEachChild(node, cb);
+        }
+    });
+}
+function jumpIsLocalToFinallyBlock(jump) {
+    var isBreakOrContinue = utils.isBreakOrContinueStatement(jump);
+    var label = isBreakOrContinue ? jump.label : undefined;
+    var node = jump;
+    // This should only be called inside a finally block, so we'll eventually reach the TryStatement case and return.
+    while (true) {
+        var parent = node.parent;
+        switch (parent.kind) {
+            case ts.SyntaxKind.TryStatement:
+                if (parent.finallyBlock === node) {
+                    return false;
+                }
+                break;
+            case ts.SyntaxKind.SwitchStatement:
+                if (jump.kind === ts.SyntaxKind.BreakStatement && label === undefined) {
+                    return true;
+                }
+                break;
+            case ts.SyntaxKind.ForInStatement:
+            case ts.SyntaxKind.ForOfStatement:
+            case ts.SyntaxKind.ForStatement:
+            case ts.SyntaxKind.WhileStatement:
+            case ts.SyntaxKind.DoStatement:
+                if (isBreakOrContinue && label === undefined) {
+                    return true;
+                }
+                break;
+            case ts.SyntaxKind.LabeledStatement: {
+                var text = parent.label.text;
+                if (label !== undefined && label.text === text) {
+                    return true;
+                }
+                break;
+            }
+            default:
+                if (utils.isFunctionScopeBoundary(parent)) {
+                    // Haven't seen TryStatement yet, so the function is inside it.
+                    // No jump statement can escape a function, so the jump is local.
+                    return true;
+                }
+        }
+        node = parent;
+    }
+}
+function printJumpKind(node) {
+    switch (node.kind) {
+        case ts.SyntaxKind.BreakStatement:
+            return "break";
+        case ts.SyntaxKind.ContinueStatement:
+            return "continue";
+        case ts.SyntaxKind.ThrowStatement:
+            return "throw";
+        case ts.SyntaxKind.ReturnStatement:
+            return "return";
+    }
+}
+var _a, _b;