tslint-microsoft-contrib/noInvalidRegexpRule.js

"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var ts = require("typescript");
var Lint = require("tslint");
var ErrorTolerantWalker_1 = require("./utils/ErrorTolerantWalker");
var Rule = (function (_super) {
    __extends(Rule, _super);
    function Rule() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    Rule.prototype.apply = function (sourceFile) {
        return this.applyWithWalker(new NoInvalidRegexpRuleWalker(sourceFile, this.getOptions()));
    };
    Rule.metadata = {
        ruleName: 'no-invalid-regexp',
        type: 'maintainability',
        description: 'Do not use invalid regular expression strings in the RegExp constructor.',
        options: null,
        optionsDescription: '',
        typescriptOnly: true,
        issueClass: 'Non-SDL',
        issueType: 'Error',
        severity: 'Critical',
        level: 'Opportunity for Excellence',
        group: 'Correctness'
    };
    return Rule;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
var NoInvalidRegexpRuleWalker = (function (_super) {
    __extends(NoInvalidRegexpRuleWalker, _super);
    function NoInvalidRegexpRuleWalker() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    NoInvalidRegexpRuleWalker.prototype.visitNewExpression = function (node) {
        this.validateCall(node);
        _super.prototype.visitNewExpression.call(this, node);
    };
    NoInvalidRegexpRuleWalker.prototype.visitCallExpression = function (node) {
        this.validateCall(node);
        _super.prototype.visitCallExpression.call(this, node);
    };
    NoInvalidRegexpRuleWalker.prototype.validateCall = function (expression) {
        if (expression.expression.getText() === 'RegExp') {
            if (expression.arguments.length > 0) {
                var arg1 = expression.arguments[0];
                if (arg1.kind === ts.SyntaxKind.StringLiteral) {
                    var regexpText = arg1.text;
                    try {
                        new RegExp(regexpText);
                    }
                    catch (e) {
                        this.addFailureAt(arg1.getStart(), arg1.getWidth(), e.message);
                    }
                }
            }
        }
    };
    return NoInvalidRegexpRuleWalker;
}(ErrorTolerantWalker_1.ErrorTolerantWalker));
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