/**
   * @fileoverview A rule to disallow modifying variables of class declarations
   * @author Toru Nagashima
   * @copyright 2015 Toru Nagashima. All rights reserved.
   */
  
  "use strict";
  
  var astUtils = require("../ast-utils");
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = function(context) {
  
      /**
       * Finds and reports references that are non initializer and writable.
       * @param {Variable} variable - A variable to check.
       * @returns {void}
       */
      function checkVariable(variable) {
          astUtils.getModifyingReferences(variable.references).forEach(function(reference) {
              context.report(
                  reference.identifier,
                  "`{{name}}` is a class.",
                  {name: reference.identifier.name});
  
          });
      }
  
      /**
       * Finds and reports references that are non initializer and writable.
       * @param {ASTNode} node - A ClassDeclaration/ClassExpression node to check.
       * @returns {void}
       */
      function checkForClass(node) {
          context.getDeclaredVariables(node).forEach(checkVariable);
      }
  
      return {
          "ClassDeclaration": checkForClass,
          "ClassExpression": checkForClass
      };
  
  };
  
  module.exports.schema = [];