github-pages-deploy-action/node_modules/tslint/lib/rules/noDuplicateSwitchCaseRule.js

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2019-11-19 20:48:29 +08:00
"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));
}
}
}