Initial commit (from f5274cbdce4ae7c9e4b937dcdf95ac70ae436d5f)

node_modules/tslint/lib/rules/incrementDecrementRule.js

@@ -0,0 +1,100 @@
+"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 });
+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;