102 lines
4.7 KiB
JavaScript
102 lines
4.7 KiB
JavaScript
|
"use strict";
|
||
|
/**
|
||
|
* @license
|
||
|
* Copyright 2013 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 });
|
||
|
exports.Rule = void 0;
|
||
|
var tslib_1 = require("tslib");
|
||
|
var tsutils = require("tsutils");
|
||
|
var ts = require("typescript");
|
||
|
var Lint = require("../index");
|
||
|
var OPTION_ALLOW_POST = "allow-post";
|
||
|
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) {
|
||
|
var options = {
|
||
|
allowPost: this.ruleArguments.indexOf(OPTION_ALLOW_POST) !== -1,
|
||
|
};
|
||
|
return this.applyWithFunction(sourceFile, walk, options);
|
||
|
};
|
||
|
Rule.metadata = {
|
||
|
description: "Enforces using explicit += 1 or -= 1 operators.",
|
||
|
optionExamples: [true, [true, OPTION_ALLOW_POST]],
|
||
|
options: {
|
||
|
items: {
|
||
|
enum: [OPTION_ALLOW_POST],
|
||
|
type: "string",
|
||
|
},
|
||
|
maxLength: 1,
|
||
|
minLength: 0,
|
||
|
type: "array",
|
||
|
},
|
||
|
optionsDescription: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n If no arguments are provided, both pre- and post-unary operators are banned.\n If `\"", "\"` is provided, post-unary operators will be allowed.\n "], ["\n If no arguments are provided, both pre- and post-unary operators are banned.\n If \\`\"", "\"\\` is provided, post-unary operators will be allowed.\n "])), OPTION_ALLOW_POST),
|
||
|
rationale: Lint.Utils.dedent(templateObject_2 || (templateObject_2 = tslib_1.__makeTemplateObject(["\n It's easy to type +i or -i instead of --i or ++i, and won't always result in invalid code.\n Prefer standardizing small arithmetic operations with the explicit += and -= operators.\n "], ["\n It's easy to type +i or -i instead of --i or ++i, and won't always result in invalid code.\n Prefer standardizing small arithmetic operations with the explicit += and -= operators.\n "]))),
|
||
|
ruleName: "increment-decrement",
|
||
|
type: "style",
|
||
|
typescriptOnly: false,
|
||
|
};
|
||
|
Rule.FAILURE_STRING_FACTORY = function (newOperatorText) {
|
||
|
return "Use an explicit " + newOperatorText + " operator.";
|
||
|
};
|
||
|
return Rule;
|
||
|
}(Lint.Rules.AbstractRule));
|
||
|
exports.Rule = Rule;
|
||
|
function walk(context) {
|
||
|
function createReplacement(node, newOperatorText) {
|
||
|
var text = node.operand.getText(context.sourceFile) + " " + newOperatorText;
|
||
|
if (node.parent !== undefined && tsutils.isBinaryExpression(node.parent)) {
|
||
|
text = "(" + text + ")";
|
||
|
}
|
||
|
return Lint.Replacement.replaceNode(node, text);
|
||
|
}
|
||
|
function complainOnNode(node) {
|
||
|
var newOperatorText = node.operator === ts.SyntaxKind.PlusPlusToken ? "+= 1" : "-= 1";
|
||
|
var replacement;
|
||
|
if (tsutils.isPrefixUnaryExpression(node) ||
|
||
|
node.parent.kind === ts.SyntaxKind.ExpressionStatement) {
|
||
|
replacement = createReplacement(node, newOperatorText);
|
||
|
}
|
||
|
var failure = Rule.FAILURE_STRING_FACTORY(newOperatorText);
|
||
|
context.addFailureAtNode(node, failure, replacement);
|
||
|
}
|
||
|
function checkPostfixUnaryExpression(node) {
|
||
|
if (!context.options.allowPost && isIncrementOrDecrementOperator(node.operator)) {
|
||
|
complainOnNode(node);
|
||
|
}
|
||
|
}
|
||
|
function checkPrefixUnaryExpression(node) {
|
||
|
if (isIncrementOrDecrementOperator(node.operator)) {
|
||
|
complainOnNode(node);
|
||
|
}
|
||
|
}
|
||
|
return ts.forEachChild(context.sourceFile, function callback(node) {
|
||
|
if (tsutils.isPostfixUnaryExpression(node)) {
|
||
|
checkPostfixUnaryExpression(node);
|
||
|
}
|
||
|
else if (tsutils.isPrefixUnaryExpression(node)) {
|
||
|
checkPrefixUnaryExpression(node);
|
||
|
}
|
||
|
return ts.forEachChild(node, callback);
|
||
|
});
|
||
|
}
|
||
|
function isIncrementOrDecrementOperator(operator) {
|
||
|
return operator === ts.SyntaxKind.PlusPlusToken || operator === ts.SyntaxKind.MinusMinusToken;
|
||
|
}
|
||
|
var templateObject_1, templateObject_2;
|