tslint-microsoft-contrib/noInvalidRegexpRule.js

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; }
    __.prototype = b.prototype;
    d.prototype = new __();
};
var ErrorTolerantWalker = require('./utils/ErrorTolerantWalker');
var SyntaxKind = require('./utils/SyntaxKind');
var Rule = (function (_super) {
    __extends(Rule, _super);
    function Rule() {
        _super.apply(this, arguments);
    }
    Rule.prototype.apply = function (sourceFile) {
        return this.applyWithWalker(new NoInvalidRegexpRuleWalker(sourceFile, this.getOptions()));
    };
    return Rule;
})(Lint.Rules.AbstractRule);
exports.Rule = Rule;
var NoInvalidRegexpRuleWalker = (function (_super) {
    __extends(NoInvalidRegexpRuleWalker, _super);
    function NoInvalidRegexpRuleWalker() {
        _super.apply(this, arguments);
    }
    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 === SyntaxKind.current().StringLiteral) {
                    var regexpText = arg1.text;
                    try {
                        var regex = new RegExp(regexpText);
                    }
                    catch (e) {
                        this.addFailure(this.createFailure(arg1.getStart(), arg1.getWidth(), e.message));
                    }
                }
            }
        }
    };
    return NoInvalidRegexpRuleWalker;
})(ErrorTolerantWalker);
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