tslint-microsoft-contrib/noDuplicateCaseRule.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 NoDuplicateCaseRuleWalker(sourceFile, this.getOptions()));
    };
    Rule.FAILURE_STRING = 'Duplicate case found in switch statement: ';
    return Rule;
})(Lint.Rules.AbstractRule);
exports.Rule = Rule;
var NoDuplicateCaseRuleWalker = (function (_super) {
    __extends(NoDuplicateCaseRuleWalker, _super);
    function NoDuplicateCaseRuleWalker() {
        _super.apply(this, arguments);
    }
    NoDuplicateCaseRuleWalker.prototype.visitSwitchStatement = function (node) {
        var _this = this;
        var seenLabels = [];
        node.caseBlock.clauses.forEach(function (clauseOrDefault) {
            if (clauseOrDefault.kind === SyntaxKind.current().CaseClause) {
                var clause = clauseOrDefault;
                if (clause.expression != null) {
                    var caseText = clause.expression.getText();
                    if (seenLabels.indexOf(caseText) > -1) {
                        _this.addFailure(_this.createFailure(clause.getStart(), clause.getWidth(), Rule.FAILURE_STRING + caseText));
                    }
                    else {
                        seenLabels.push(caseText);
                    }
                }
            }
        });
        _super.prototype.visitSwitchStatement.call(this, node);
    };
    return NoDuplicateCaseRuleWalker;
})(ErrorTolerantWalker);
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