66 lines
2.3 KiB
JavaScript
66 lines
2.3 KiB
JavaScript
"use strict";
|
|
/**
|
|
* @license
|
|
* Copyright 2017 Palantir Technologies, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
var tslib_1 = require("tslib");
|
|
var ts = require("typescript");
|
|
var Lint = require("../index");
|
|
var Rule = /** @class */ (function (_super) {
|
|
tslib_1.__extends(Rule, _super);
|
|
function Rule() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
Rule.prototype.apply = function (sourceFile) {
|
|
return this.applyWithFunction(sourceFile, walk);
|
|
};
|
|
Rule.metadata = {
|
|
description: "Prevents duplicate cases in switch statements.",
|
|
optionExamples: [true],
|
|
options: null,
|
|
optionsDescription: "",
|
|
ruleName: "no-duplicate-switch-case",
|
|
type: "functionality",
|
|
typescriptOnly: false,
|
|
};
|
|
Rule.FAILURE_STRING_FACTORY = function (text) { return "Duplicate switch case: '" + text + "'."; };
|
|
return Rule;
|
|
}(Lint.Rules.AbstractRule));
|
|
exports.Rule = Rule;
|
|
function walk(ctx) {
|
|
ts.forEachChild(ctx.sourceFile, function cb(node) {
|
|
if (node.kind === ts.SyntaxKind.CaseBlock) {
|
|
visitCaseBlock(node);
|
|
}
|
|
ts.forEachChild(node, cb);
|
|
});
|
|
function visitCaseBlock(node) {
|
|
var previousCases = new Set();
|
|
for (var _i = 0, _a = node.clauses; _i < _a.length; _i++) {
|
|
var clause = _a[_i];
|
|
if (clause.kind === ts.SyntaxKind.DefaultClause) {
|
|
continue;
|
|
}
|
|
var text = clause.expression.getText(ctx.sourceFile);
|
|
if (!previousCases.has(text)) {
|
|
previousCases.add(text);
|
|
continue;
|
|
}
|
|
ctx.addFailureAtNode(clause.expression, Rule.FAILURE_STRING_FACTORY(text));
|
|
}
|
|
}
|
|
}
|