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"use strict";
/**
* @license
* Copyright 2013 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 tsutils_1 = 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;
}
Rule.prototype.apply = function (sourceFile) {
return this.applyWithFunction(sourceFile, walk);
};
/* tslint:disable:object-literal-sort-keys */
Rule.metadata = {
ruleName: "label-position",
description: "Only allows labels in sensible locations.",
descriptionDetails: "This rule only allows labels to be on `do/for/while/switch` statements.",
rationale: (_a = ["\n Labels in JavaScript only can be used in conjunction with `break` or `continue`,\n constructs meant to be used for loop flow control. While you can theoretically use\n labels on any block statement in JS, it is considered poor code structure to do so."], _a.raw = ["\n Labels in JavaScript only can be used in conjunction with \\`break\\` or \\`continue\\`,\n constructs meant to be used for loop flow control. While you can theoretically use\n labels on any block statement in JS, it is considered poor code structure to do so."], Lint.Utils.dedent(_a)),
optionsDescription: "Not configurable.",
options: null,
optionExamples: [true],
type: "functionality",
typescriptOnly: false,
};
/* tslint:enable:object-literal-sort-keys */
Rule.FAILURE_STRING = "unexpected label on statement";
return Rule;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
function walk(ctx) {
return ts.forEachChild(ctx.sourceFile, function cb(node) {
if (tsutils_1.isLabeledStatement(node) && !isLabelable(node.statement)) {
ctx.addFailureAtNode(node.label, Rule.FAILURE_STRING);
}
return ts.forEachChild(node, cb);
});
}
function isLabelable(node) {
switch (node.kind) {
case ts.SyntaxKind.DoStatement:
case ts.SyntaxKind.ForStatement:
case ts.SyntaxKind.ForInStatement:
case ts.SyntaxKind.ForOfStatement:
case ts.SyntaxKind.WhileStatement:
case ts.SyntaxKind.SwitchStatement:
return true;
default:
return false;
}
}
var _a;
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