text: "use strict";
  /**
   * @license
   * Copyright 2015 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 = (function (_super) {
      tslib_1.__extends(Rule, _super);
      function Rule() {
          return _super !== null && _super.apply(this, arguments) || this;
      }
      Rule.prototype.apply = function (sourceFile) {
          var walker = new NoConditionalAssignmentWalker(sourceFile, this.getOptions());
          return this.applyWithWalker(walker);
      };
      return Rule;
  }(Lint.Rules.AbstractRule));
  /* tslint:disable:object-literal-sort-keys */
  Rule.metadata = {
      ruleName: "no-conditional-assignment",
      description: "Disallows any type of assignment in conditionals.",
      descriptionDetails: "This applies to `do-while`, `for`, `if`, and `while` statements.",
      rationale: (_a = ["\n            Assignments in conditionals are often typos:\n            for example `if (var1 = var2)` instead of `if (var1 == var2)`.\n            They also can be an indicator of overly clever code which decreases maintainability."], _a.raw = ["\n            Assignments in conditionals are often typos:\n            for example \\`if (var1 = var2)\\` instead of \\`if (var1 == var2)\\`.\n            They also can be an indicator of overly clever code which decreases maintainability."], Lint.Utils.dedent(_a)),
      optionsDescription: "Not configurable.",
      options: null,
      optionExamples: [true],
      type: "functionality",
      typescriptOnly: false,
  };
  /* tslint:enable:object-literal-sort-keys */
  Rule.FAILURE_STRING = "Assignments in conditional expressions are forbidden";
  exports.Rule = Rule;
  var NoConditionalAssignmentWalker = (function (_super) {
      tslib_1.__extends(NoConditionalAssignmentWalker, _super);
      function NoConditionalAssignmentWalker() {
          var _this = _super !== null && _super.apply(this, arguments) || this;
          _this.isInConditional = false;
          return _this;
      }
      NoConditionalAssignmentWalker.prototype.visitIfStatement = function (node) {
          this.validateConditionalExpression(node.expression);
          _super.prototype.visitIfStatement.call(this, node);
      };
      NoConditionalAssignmentWalker.prototype.visitWhileStatement = function (node) {
          this.validateConditionalExpression(node.expression);
          _super.prototype.visitWhileStatement.call(this, node);
      };
      NoConditionalAssignmentWalker.prototype.visitDoStatement = function (node) {
          this.validateConditionalExpression(node.expression);
          _super.prototype.visitDoStatement.call(this, node);
      };
      NoConditionalAssignmentWalker.prototype.visitForStatement = function (node) {
          if (node.condition != null) {
              this.validateConditionalExpression(node.condition);
          }
          _super.prototype.visitForStatement.call(this, node);
      };
      NoConditionalAssignmentWalker.prototype.visitBinaryExpression = function (expression) {
          if (this.isInConditional) {
              this.checkForAssignment(expression);
          }
          _super.prototype.visitBinaryExpression.call(this, expression);
      };
      NoConditionalAssignmentWalker.prototype.validateConditionalExpression = function (expression) {
          this.isInConditional = true;
          if (expression.kind === ts.SyntaxKind.BinaryExpression) {
              // check for simple assignment in a conditional, like `if (a = 1) {`
              this.checkForAssignment(expression);
          }
          // walk the children of the conditional expression for nested assignments, like `if ((a = 1) && (b == 1)) {`
          this.walkChildren(expression);
          this.isInConditional = false;
      };
      NoConditionalAssignmentWalker.prototype.checkForAssignment = function (expression) {
          if (isAssignmentToken(expression.operatorToken)) {
              this.addFailureAtNode(expression, Rule.FAILURE_STRING);
          }
      };
      return NoConditionalAssignmentWalker;
  }(Lint.RuleWalker));
  function isAssignmentToken(token) {
      return token.kind >= ts.SyntaxKind.FirstAssignment && token.kind <= ts.SyntaxKind.LastAssignment;
  }
  var _a;
  