93 lines
4.2 KiB
JavaScript
93 lines
4.2 KiB
JavaScript
"use strict";
|
|
/**
|
|
* @license
|
|
* Copyright 2016 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 utils_1 = require("../language/utils");
|
|
var Rule = (function (_super) {
|
|
tslib_1.__extends(Rule, _super);
|
|
function Rule() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
Rule.prototype.apply = function (sourceFile) {
|
|
var allowedNumbers = this.ruleArguments.length > 0 ? this.ruleArguments : Rule.DEFAULT_ALLOWED;
|
|
return this.applyWithWalker(new NoMagicNumbersWalker(sourceFile, this.ruleName, new Set(allowedNumbers.map(String))));
|
|
};
|
|
/* tslint:disable:object-literal-sort-keys */
|
|
Rule.metadata = {
|
|
ruleName: "no-magic-numbers",
|
|
description: (_a = ["\n Disallows the use constant number values outside of variable assignments.\n When no list of allowed values is specified, -1, 0 and 1 are allowed by default."], _a.raw = ["\n Disallows the use constant number values outside of variable assignments.\n When no list of allowed values is specified, -1, 0 and 1 are allowed by default."], Lint.Utils.dedent(_a)),
|
|
rationale: (_b = ["\n Magic numbers should be avoided as they often lack documentation, forcing\n them to be stored in variables gives them implicit documentation."], _b.raw = ["\n Magic numbers should be avoided as they often lack documentation, forcing\n them to be stored in variables gives them implicit documentation."], Lint.Utils.dedent(_b)),
|
|
optionsDescription: "A list of allowed numbers.",
|
|
options: {
|
|
type: "array",
|
|
items: {
|
|
type: "number",
|
|
},
|
|
minLength: 1,
|
|
},
|
|
optionExamples: [true, [true, 1, 2, 3]],
|
|
type: "typescript",
|
|
typescriptOnly: false,
|
|
};
|
|
/* tslint:enable:object-literal-sort-keys */
|
|
Rule.FAILURE_STRING = "'magic numbers' are not allowed";
|
|
Rule.ALLOWED_NODES = new Set([
|
|
ts.SyntaxKind.ExportAssignment,
|
|
ts.SyntaxKind.FirstAssignment,
|
|
ts.SyntaxKind.LastAssignment,
|
|
ts.SyntaxKind.PropertyAssignment,
|
|
ts.SyntaxKind.ShorthandPropertyAssignment,
|
|
ts.SyntaxKind.VariableDeclaration,
|
|
ts.SyntaxKind.VariableDeclarationList,
|
|
ts.SyntaxKind.EnumMember,
|
|
ts.SyntaxKind.PropertyDeclaration,
|
|
ts.SyntaxKind.Parameter,
|
|
]);
|
|
Rule.DEFAULT_ALLOWED = [-1, 0, 1];
|
|
return Rule;
|
|
}(Lint.Rules.AbstractRule));
|
|
exports.Rule = Rule;
|
|
var NoMagicNumbersWalker = (function (_super) {
|
|
tslib_1.__extends(NoMagicNumbersWalker, _super);
|
|
function NoMagicNumbersWalker() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
NoMagicNumbersWalker.prototype.walk = function (sourceFile) {
|
|
var _this = this;
|
|
var cb = function (node) {
|
|
if (node.kind === ts.SyntaxKind.NumericLiteral) {
|
|
return _this.checkNumericLiteral(node, node.text);
|
|
}
|
|
if (utils_1.isNegativeNumberLiteral(node)) {
|
|
return _this.checkNumericLiteral(node, "-" + node.operand.text);
|
|
}
|
|
return ts.forEachChild(node, cb);
|
|
};
|
|
return ts.forEachChild(sourceFile, cb);
|
|
};
|
|
NoMagicNumbersWalker.prototype.checkNumericLiteral = function (node, num) {
|
|
if (!Rule.ALLOWED_NODES.has(node.parent.kind) && !this.options.has(num)) {
|
|
this.addFailureAtNode(node, Rule.FAILURE_STRING);
|
|
}
|
|
};
|
|
return NoMagicNumbersWalker;
|
|
}(Lint.AbstractWalker));
|
|
var _a, _b;
|