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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 NoStringLiteralWalker(sourceFile, this.getOptions()));
- };
- Rule.FAILURE_STRING = "object access via string literals is disallowed";
- return Rule;
- }(Lint.Rules.AbstractRule));
- exports.Rule = Rule;
- var NoStringLiteralWalker = (function (_super) {
- __extends(NoStringLiteralWalker, _super);
- function NoStringLiteralWalker() {
- _super.apply(this, arguments);
- }
- NoStringLiteralWalker.prototype.visitElementAccessExpression = function (node) {
- var argument = node.argumentExpression;
- var accessorText = argument.getText();
- if (argument.kind === ts.SyntaxKind.StringLiteral && accessorText.length > 2) {
- var unquotedAccessorText = accessorText.substring(1, accessorText.length - 1);
- if (isValidIdentifier(unquotedAccessorText)) {
- this.addFailure(this.createFailure(argument.getStart(), argument.getWidth(), Rule.FAILURE_STRING));
- }
- }
- _super.prototype.visitElementAccessExpression.call(this, node);
- };
- return NoStringLiteralWalker;
- }(Lint.RuleWalker));
- function isValidIdentifier(token) {
- var scanner = ts.createScanner(ts.ScriptTarget.ES5, false, ts.LanguageVariant.Standard, token);
- scanner.scan();
- return scanner.getTokenText() === token && scanner.isIdentifier();
- }
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