labelPositionRule.js
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"use strict";
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var ts = require("typescript");
var Lint = require("../lint");
var Rule = (function (_super) {
__extends(Rule, _super);
function Rule() {
_super.apply(this, arguments);
}
Rule.prototype.apply = function (sourceFile) {
return this.applyWithWalker(new LabelPositionWalker(sourceFile, this.getOptions()));
};
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",
};
Rule.FAILURE_STRING = "unexpected label on statement";
return Rule;
var _a;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
var LabelPositionWalker = (function (_super) {
__extends(LabelPositionWalker, _super);
function LabelPositionWalker() {
_super.apply(this, arguments);
}
LabelPositionWalker.prototype.visitLabeledStatement = function (node) {
var statement = node.statement;
if (statement.kind !== ts.SyntaxKind.DoStatement
&& statement.kind !== ts.SyntaxKind.ForStatement
&& statement.kind !== ts.SyntaxKind.ForInStatement
&& statement.kind !== ts.SyntaxKind.ForOfStatement
&& statement.kind !== ts.SyntaxKind.WhileStatement
&& statement.kind !== ts.SyntaxKind.SwitchStatement) {
var failure = this.createFailure(node.label.getStart(), node.label.getWidth(), Rule.FAILURE_STRING);
this.addFailure(failure);
}
_super.prototype.visitLabeledStatement.call(this, node);
};
return LabelPositionWalker;
}(Lint.RuleWalker));