"use strict";
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/**
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* @license
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* Copyright 2018 Palantir Technologies, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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var tslib_1 = require("tslib");
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var tsutils_1 = require("tsutils");
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var ts = require("typescript");
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var Lint = require("../index");
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var Rule = /** @class */ (function (_super) {
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tslib_1.__extends(Rule, _super);
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function Rule() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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Rule.prototype.apply = function (sourceFile) {
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return this.applyWithFunction(sourceFile, walk);
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};
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/* tslint:disable:object-literal-sort-keys */
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Rule.metadata = {
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ruleName: "no-angle-bracket-type-assertion",
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description: "Requires the use of `as Type` for type assertions instead of `<Type>`.",
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hasFix: true,
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rationale: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n Both formats of type assertions have the same effect, but only `as` type assertions\n work in `.tsx` files. This rule ensures that you have a consistent type assertion style\n across your codebase."], ["\n Both formats of type assertions have the same effect, but only \\`as\\` type assertions\n work in \\`.tsx\\` files. This rule ensures that you have a consistent type assertion style\n across your codebase."]))),
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optionsDescription: "Not configurable.",
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options: null,
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optionExamples: [true],
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type: "style",
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typescriptOnly: true,
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};
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/* tslint:enable:object-literal-sort-keys */
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Rule.FAILURE_STRING = "Type assertion using the '<>' syntax is forbidden. Use the 'as' syntax instead.";
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return Rule;
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}(Lint.Rules.AbstractRule));
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exports.Rule = Rule;
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function walk(ctx) {
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return ts.forEachChild(ctx.sourceFile, function cb(node) {
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if (tsutils_1.isTypeAssertion(node)) {
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var expression = node.expression;
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var start = node.getStart(ctx.sourceFile);
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var addParens = needsParens(node);
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var replaceText = " as " + node.type.getText(ctx.sourceFile) + (addParens ? ")" : "");
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while (tsutils_1.isTypeAssertion(expression)) {
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replaceText = " as " + expression.type.getText(ctx.sourceFile) + replaceText;
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expression = expression.expression;
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}
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ctx.addFailure(start, node.end, Rule.FAILURE_STRING, [
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Lint.Replacement.appendText(node.end, replaceText),
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Lint.Replacement.replaceFromTo(start, expression.getStart(ctx.sourceFile), addParens ? "(" : ""),
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]);
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return cb(expression);
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}
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return ts.forEachChild(node, cb);
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});
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}
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function needsParens(node) {
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var parent = node.parent;
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return (tsutils_1.isBinaryExpression(parent) &&
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(parent.operatorToken.kind === ts.SyntaxKind.AmpersandToken ||
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parent.operatorToken.kind === ts.SyntaxKind.BarToken));
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}
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var templateObject_1;
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