/**
   * @fileoverview Rule to flag use of an lexical declarations inside a case clause
   * @author Erik Arvidsson
   * @copyright 2015 Erik Arvidsson. All rights reserved.
   */
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = function(context) {
  
      /**
       * Checks whether or not a node is a lexical declaration.
       * @param {ASTNode} node A direct child statement of a switch case.
       * @returns {boolean} Whether or not the node is a lexical declaration.
       */
      function isLexicalDeclaration(node) {
          switch (node.type) {
              case "FunctionDeclaration":
              case "ClassDeclaration":
                  return true;
              case "VariableDeclaration":
                  return node.kind !== "var";
              default:
                  return false;
          }
      }
  
      return {
          "SwitchCase": function(node) {
              for (var i = 0; i < node.consequent.length; i++) {
                  var statement = node.consequent[i];
                  if (isLexicalDeclaration(statement)) {
                      context.report({
                          node: node,
                          message: "Unexpected lexical declaration in case block."
                      });
                  }
              }
          }
      };
  
  };
  
  module.exports.schema = [];